1 | /*
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2 | ** parse.y - mruby parser
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3 | **
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4 | ** See Copyright Notice in mruby.h
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5 | */
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6 | using System;
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7 | using System.Collections.Generic;
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8 | using Bridge.Html5;
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9 |
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10 | namespace WebMrbc
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11 | {
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12 | interface IEvaluatable
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13 | {
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14 | node evaluate(string method, node[] args);
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15 | }
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16 |
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17 | class kwtable
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18 | {
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19 | public Uint8Array name;
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20 | public MrbTokens id0;
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21 | public MrbTokens id1;
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22 | public mrb_lex_state_enum state;
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23 |
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24 | public kwtable(string name, MrbTokens id0, MrbTokens id1, mrb_lex_state_enum state)
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25 | {
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26 | this.name = MrbParser.UTF8StringToArray(name);
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27 | this.id0 = id0;
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28 | this.id1 = id1;
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29 | this.state = state;
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30 | }
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31 |
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32 | public kwtable(string name)
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33 | {
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34 | this.name = MrbParser.UTF8StringToArray(name);
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35 | }
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36 | }
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37 |
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38 | delegate int partial_hook_t(MrbParser p);
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39 |
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40 | public class MrbToken
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41 | {
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42 | private string m_Filename;
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43 | private MrbTokens m_Kind;
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44 | private string m_Token;
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45 | private object m_Value;
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46 |
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47 | public string Filename { get { return m_Filename; } }
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48 | public MrbTokens Kind { get { return m_Kind; } }
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49 | public object Value { get { return m_Value; } }
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50 |
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51 | public node nd { get { return (node)m_Value; } set { this.m_Value = value; } }
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52 | public mrb_sym id { get { return (mrb_sym)m_Value; } set { this.m_Value = value; } }
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53 | public int num { get { return (int)m_Value; } set { this.m_Value = value; } }
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54 | public stack_type stack { get { return (stack_type)m_Value; } set { this.m_Value = value; } }
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55 | //public vtable vars { get { return (vtable)value; } set { this.value = value; } }
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56 |
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57 | public MrbToken(string filename)
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58 | {
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59 | m_Filename = filename;
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60 | }
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61 |
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62 | internal void SetToken(MrbTokens kind, string token)
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63 | {
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64 | m_Kind = kind;
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65 | m_Token = token;
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66 | }
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67 | }
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68 |
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69 | public partial class MrbParser : IMrbParser, MrbParser.yyInput, MrbParser.yyConsoleOut
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70 | {
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71 | const int MRB_PARSER_TOKBUF_MAX = 65536;
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72 | const int MRB_PARSER_TOKBUF_SIZE = 256;
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73 |
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74 | Uint8Array s;
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75 | int sp;
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76 | public string filename {
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77 | get {
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78 | if (current_filename_index < filename_table.Length)
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79 | return filename_table[current_filename_index];
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80 | else
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81 | return "(null)";
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82 | }
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83 | }
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84 | public int lineno { get; set; }
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85 | public int column { get; set; }
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86 |
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87 | mrb_lex_state_enum lstate;
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88 | node lex_strterm;
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89 |
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90 | stack_type cond_stack;
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91 | stack_type cmdarg_stack;
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92 | int paren_nest;
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93 | int lpar_beg;
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94 | int in_def, in_single;
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95 | bool cmd_start;
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96 | locals_node locals;
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97 |
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98 | node pb;
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99 | Uint8Array buf = new Uint8Array(MRB_PARSER_TOKBUF_SIZE);
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100 | Uint8Array tokbuf;
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101 | int tidx;
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102 | int tsiz;
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103 |
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104 | node all_heredocs;
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105 | node heredocs_from_nextline;
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106 | node parsing_heredoc;
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107 | node lex_strterm_before_heredoc;
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108 |
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109 | internal node tree;
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110 |
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111 | string[] filename_table = new string[0];
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112 | int filename_table_length { get { return filename_table.Length; } }
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113 | public int current_filename_index;
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114 |
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115 | internal partial_hook_t partial_hook;
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116 | internal object partial_data;
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117 |
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118 | MrbToken yylval;
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119 |
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120 | public MrbParser()
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121 | {
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122 | yyConsole = this;
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123 | }
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124 |
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125 | void mrb_assert(bool cond)
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126 | {
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127 | if (!cond) throw new Exception();
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128 | }
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129 |
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130 | const int ERANGE = 1;
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131 | int errno;
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132 | static int memcmp(Uint8Array a, int aofs, Uint8Array b, int bofs, int len)
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133 | {
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134 | int result;
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135 | for (int i = 0; i < len; i++) {
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136 | result = a[i] - b[i];
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137 | if (result != 0)
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138 | return result;
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139 | }
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140 | return 0;
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141 | }
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142 |
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143 | static bool isdigit(int c)
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144 | {
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145 | return (c >= '0' && c <= '9');
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146 | }
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147 |
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148 | static bool isalnum(int c)
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149 | {
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150 | return (c >= '0' && c <= '9') || (c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z');
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151 | }
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152 |
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153 | static int tolower(int c)
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154 | {
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155 | if (c >= 'A' && c <= 'Z')
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156 | return c - 'A' + 'a';
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157 | return c;
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158 | }
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159 |
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160 | static int strlen(Uint8Array a, int ofs)
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161 | {
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162 | int i = ofs;
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163 | for (; i < a.Length; i++) {
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164 | if (a[i] == 0)
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165 | break;
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166 | }
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167 | return i - ofs;
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168 | }
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169 |
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170 | static int strncmp(Uint8Array a, int aofs, Uint8Array b, int bofs, int len)
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171 | {
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172 | int result;
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173 | for (int i = 0; i < len; i++) {
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174 | if (a[i + aofs] == 0) {
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175 | if (b[i + bofs] == 0) {
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176 | return 0;
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177 | }
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178 | return byte.MaxValue;
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179 | }
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180 | if (b[i + bofs] == 0) {
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181 | return -byte.MaxValue;
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182 | }
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183 |
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184 | result = a[i + aofs] - b[i + bofs];
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185 | if (result != 0)
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186 | return result;
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187 | }
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188 | return 0;
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189 | }
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190 |
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191 | static int strchr(Uint8Array s, int ofs, int c)
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192 | {
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193 | int i = ofs;
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194 | for (; i < s.Length; i++) {
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195 | if (s[i] == c)
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196 | break;
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197 | }
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198 | return i;
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199 | }
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200 |
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201 | public static Uint8Array strndup(Uint8Array s, int ofs, int len)
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202 | {
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203 | return s.SubArray(ofs, len + 1);
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204 | }
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205 |
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206 | public static Uint8Array strdup(Uint8Array s, int ofs)
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207 | {
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208 | return s.SubArray(ofs, strlen(s, ofs) + 1);
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209 | }
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210 |
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211 | private static string escape(byte c)
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212 | {
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213 | switch ((char)c) {
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214 | case '\\': return "\\";
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215 | case '\n': return "\\n";
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216 | case '\t': return "\\t";
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217 | case '\r': return "\\r";
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218 | case '\f': return "\\f";
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219 | case '\v': return "\\v";
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220 | case '\a': return "\\a";
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221 | case '\x27': return "\\e";
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222 | case '\b': return "\\b";
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223 | case ' ': return "\\s";
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224 | case '\0': return "\\0";
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225 | default: return $"\\x{c:X}";
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226 | }
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227 | }
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228 |
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229 | internal static string UTF8ArrayToString(Uint8Array data, int idx)
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230 | {
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231 | bool esc;
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232 | return UTF8ArrayToStringEsc(data, idx, out esc);
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233 | }
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234 |
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235 | internal static string UTF8ArrayToStringEsc(Uint8Array data, int idx, out bool esc)
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236 | {
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237 | var str = "";
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238 | int c = 0, t = 0, end = data.Length;
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239 | var temp = new byte[6];
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240 |
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241 | esc = false;
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242 | if (end > 0 && data[end - 1] == '\x0')
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243 | end--;
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244 |
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245 | for (int i = idx; i < end; i++) {
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246 | var d = data[i];
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247 | temp[c] = d;
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248 | if (t == 0) {
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249 | // 1Byteコード
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250 | if ((d & 0x80) == 0) {
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251 | // 表示可能なコード
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252 | if (d >= 0x20 && d < 0x7F)
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253 | str += (char)d;
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254 | // 表示不可ならエスケープ
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255 | else {
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256 | esc = true;
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257 | str += escape(d);
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258 | }
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259 | continue;
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260 | }
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261 | // 2Byteコード
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262 | else if ((d & 0xE0) == 0xC0) {
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263 | t = 2;
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264 | }
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265 | // 3Byteコード
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266 | else if ((d & 0xF0) == 0xE0) {
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267 | t = 3;
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268 | }
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269 | // 4Byteコード
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270 | else if ((d & 0xF8) == 0xF0) {
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271 | t = 4;
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272 | }
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273 | // 5Byteコード
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274 | else if ((d & 0xFC) == 0xF8) {
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275 | t = 5;
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276 | }
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277 | // 6Byteコード
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278 | else if ((d & 0xFE) == 0xFC) {
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279 | t = 6;
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280 | }
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281 | // 表示不可ならエスケープ
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282 | else {
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283 | esc = true;
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284 | str += escape(d);
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285 | continue;
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286 | }
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287 | c = 1;
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288 | }
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289 | else {
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290 | // 表示不可ならエスケープ
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291 | if ((d & 0xC0) != 0x80) {
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292 | for (int j = 0; j < c; j++) {
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293 | esc = true;
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294 | str += escape(temp[j]);
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295 | }
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296 | t = 0;
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297 | c = 0;
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298 | continue;
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299 | }
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300 | c++;
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301 | // 表示可能なコード
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302 | if (c == t) {
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303 | switch (t) {
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304 | case 2:
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305 | str += ConvertFromUtf32(((temp[0] & 0x1F) << 6) | (temp[1] & 0x3F));
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306 | break;
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307 | case 3:
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308 | str += ConvertFromUtf32(((temp[0] & 0x0F) << 12) | ((temp[1] & 0x3F) << 6) | (temp[2] & 0x3F));
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309 | break;
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310 | case 4:
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311 | str += ConvertFromUtf32(((temp[0] & 0x07) << 18) | ((temp[1] & 0x3F) << 12) | ((temp[2] & 0x3F) << 6) | (temp[3] & 0x3F));
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312 | break;
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313 | case 5:
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314 | str += ConvertFromUtf32(((temp[0] & 0x03) << 24) | ((temp[1] & 0x3F) << 18) | ((temp[2] & 0x3F) << 12) | ((temp[3] & 0x3F) << 6) | (temp[4] & 0x3F));
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315 | break;
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316 | case 6:
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317 | str += ConvertFromUtf32(((temp[0] & 0x01) << 30) | ((temp[1] & 0x3F) << 24) | ((temp[2] & 0x3F) << 18) | ((temp[3] & 0x3F) << 12) | ((temp[4] & 0x3F) << 6) | (temp[5] & 0x3F));
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318 | break;
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319 | }
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320 | t = 0;
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321 | c = 0;
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322 | continue;
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323 | }
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324 | }
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325 | }
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326 |
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327 | if (c > 0)
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328 | esc = true;
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329 | for (int i = 0; i < c; i++) {
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330 | str += escape(temp[i]);
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331 | }
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332 |
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333 | return str;
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334 | }
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335 |
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336 | // from Emscripten (http://kripken.github.io/emscripten-site/)
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337 | // Gotcha: fromCharCode constructs a character from a UTF-16 encoded code (pair), not from a Unicode code point! So encode the code point to UTF-16 for constructing.
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338 | // See http://unicode.org/faq/utf_bom.html#utf16-3
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339 | public static string ConvertFromUtf32(int utf32)
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340 | {
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341 | var str = "";
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342 | if (utf32 >= 0x10000) {
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343 | var ch = utf32 - 0x10000;
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344 | str += StringPrototype.FromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
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345 | }
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346 | else {
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347 | str += StringPrototype.FromCharCode(utf32);
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348 | }
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349 | return str;
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350 | }
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351 |
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352 | // from Emscripten (http://kripken.github.io/emscripten-site/)
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353 | // Copies the given Javascript String object 'str' to the given byte array at address 'outIdx',
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354 | // encoded in UTF8 form and null-terminated. The copy will require at most str.length*4+1 bytes of space in the HEAP.
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355 | // Use the function lengthBytesUTF8() to compute the exact number of bytes (excluding null terminator) that this function will write.
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356 | // Parameters:
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357 | // str: the Javascript string to copy.
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358 | // outU8Array: the array to copy to. Each index in this array is assumed to be one 8-byte element.
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359 | // outIdx: The starting offset in the array to begin the copying.
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360 | // maxBytesToWrite: The maximum number of bytes this function can write to the array. This count should include the null
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361 | // terminator, i.e. if maxBytesToWrite=1, only the null terminator will be written and nothing else.
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362 | // maxBytesToWrite=0 does not write any bytes to the output, not even the null terminator.
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363 | // Returns the number of bytes written, EXCLUDING the null terminator.
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364 | internal static int stringToUTF8Array(string str, Uint8Array outU8Array, int outIdx, int maxBytesToWrite)
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365 | {
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366 | if (!(maxBytesToWrite > 0)) // Parameter maxBytesToWrite is not optional. Negative values, 0, null, undefined and false each don't write out any bytes.
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367 | return 0;
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368 |
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369 | var startIdx = outIdx;
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370 | var endIdx = outIdx + maxBytesToWrite - 1; // -1 for string null terminator.
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371 | for (var i = 0; i < str.Length; ++i) {
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372 | // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
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373 | // See http://unicode.org/faq/utf_bom.html#utf16-3
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374 | // For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description and https://www.ietf.org/rfc/rfc2279.txt and https://tools.ietf.org/html/rfc3629
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375 | var u = str[i]; // possibly a lead surrogate
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376 | if (u >= 0xD800 && u <= 0xDFFF) u = (char)(0x10000 + ((u & 0x3FF) << 10) | (str[++i] & 0x3FF));
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377 | if (u <= 0x7F) {
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378 | if (outIdx >= endIdx) break;
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379 | outU8Array[outIdx++] = (byte)u;
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380 | }
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381 | else if (u <= 0x7FF) {
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382 | if (outIdx + 1 >= endIdx) break;
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383 | outU8Array[outIdx++] = (byte)(0xC0 | (u >> 6));
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384 | outU8Array[outIdx++] = (byte)(0x80 | (u & 63));
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385 | }
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386 | else if (u <= 0xFFFF) {
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387 | if (outIdx + 2 >= endIdx) break;
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388 | outU8Array[outIdx++] = (byte)(0xE0 | (u >> 12));
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389 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 6) & 63));
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390 | outU8Array[outIdx++] = (byte)(0x80 | (u & 63));
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391 | }
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392 | else if (u <= 0x1FFFFF) {
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393 | if (outIdx + 3 >= endIdx) break;
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394 | outU8Array[outIdx++] = (byte)(0xF0 | (u >> 18));
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395 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 12) & 63));
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396 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 6) & 63));
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397 | outU8Array[outIdx++] = (byte)(0x80 | (u & 63));
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398 | }
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399 | else if (u <= 0x3FFFFFF) {
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400 | if (outIdx + 4 >= endIdx) break;
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401 | outU8Array[outIdx++] = (byte)(0xF8 | (u >> 24));
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402 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 18) & 63));
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403 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 12) & 63));
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404 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 6) & 63));
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405 | outU8Array[outIdx++] = (byte)(0x80 | (u & 63));
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406 | }
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407 | else {
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408 | if (outIdx + 5 >= endIdx) break;
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409 | outU8Array[outIdx++] = (byte)(0xFC | (u >> 30));
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410 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 24) & 63));
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411 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 18) & 63));
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412 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 12) & 63));
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413 | outU8Array[outIdx++] = (byte)(0x80 | ((u >> 6) & 63));
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414 | outU8Array[outIdx++] = (byte)(0x80 | (u & 63));
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415 | }
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416 | }
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417 | // Null-terminate the pointer to the buffer.
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418 | outU8Array[outIdx] = 0;
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419 | return outIdx - startIdx;
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420 | }
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421 |
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422 | // from Emscripten (http://kripken.github.io/emscripten-site/)
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423 | // Returns the number of bytes the given Javascript string takes if encoded as a UTF8 byte array, EXCLUDING the null terminator byte.
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424 | internal static int lengthBytesUTF8(string str)
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425 | {
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426 | var len = 0;
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427 | for (var i = 0; i < str.Length; ++i) {
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428 | // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
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429 | // See http://unicode.org/faq/utf_bom.html#utf16-3
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430 | var u = str[i]; // possibly a lead surrogate
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431 | if (u >= 0xD800 && u <= 0xDFFF) u = (char)(0x10000 + ((u & 0x3FF) << 10) | (str[++i] & 0x3FF));
|
---|
432 | if (u <= 0x7F) {
|
---|
433 | ++len;
|
---|
434 | }
|
---|
435 | else if (u <= 0x7FF) {
|
---|
436 | len += 2;
|
---|
437 | }
|
---|
438 | else if (u <= 0xFFFF) {
|
---|
439 | len += 3;
|
---|
440 | }
|
---|
441 | else if (u <= 0x1FFFFF) {
|
---|
442 | len += 4;
|
---|
443 | }
|
---|
444 | else if (u <= 0x3FFFFFF) {
|
---|
445 | len += 5;
|
---|
446 | }
|
---|
447 | else {
|
---|
448 | len += 6;
|
---|
449 | }
|
---|
450 | }
|
---|
451 | return len;
|
---|
452 | }
|
---|
453 |
|
---|
454 | internal static Uint8Array UTF8StringToArray(string str)
|
---|
455 | {
|
---|
456 | var len = lengthBytesUTF8(str) + 1;
|
---|
457 | var result = new Uint8Array(len);
|
---|
458 | stringToUTF8Array(str, result, 0, len);
|
---|
459 | return result;
|
---|
460 | }
|
---|
461 |
|
---|
462 | static ulong strtoul(Uint8Array s, int ofs, out Uint8Array endptr, int _base_)
|
---|
463 | {
|
---|
464 | if (_base_ != 10) throw new AggregateException();
|
---|
465 | ulong result;
|
---|
466 | if (UInt64.TryParse(UTF8ArrayToString(s.SubArray(ofs, s.Length - ofs + 1), 0), out result)) {
|
---|
467 | endptr = null;
|
---|
468 | }
|
---|
469 | else {
|
---|
470 | endptr = s;
|
---|
471 | }
|
---|
472 | return result;
|
---|
473 | }
|
---|
474 |
|
---|
475 | static double mrb_float_read(Uint8Array s, int ofs, out Uint8Array endptr)
|
---|
476 | {
|
---|
477 | double result;
|
---|
478 | if (Double.TryParse(UTF8ArrayToString(s.SubArray(ofs, s.Length - ofs + 1), 0), out result)) {
|
---|
479 | endptr = null;
|
---|
480 | }
|
---|
481 | else {
|
---|
482 | endptr = s;
|
---|
483 | }
|
---|
484 | return result;
|
---|
485 | }
|
---|
486 |
|
---|
487 | bool identchar(int c) { return (ISALNUM(c) || (c) == '_' || !ISASCII(c)); }
|
---|
488 |
|
---|
489 | void BITSTACK_PUSH(ref stack_type stack, uint n) { stack = (stack_type)(((uint)stack << 1) | (n & 1)); }
|
---|
490 | void BITSTACK_POP(ref stack_type stack) { stack = (stack_type)((uint)stack >> 1); }
|
---|
491 | void BITSTACK_LEXPOP(ref stack_type stack) { stack = (stack_type)(((uint)stack >> 1) | ((uint)stack & 1)); }
|
---|
492 | stack_type BITSTACK_SET_P(ref stack_type stack) { return (stack_type)((uint)stack & 1); }
|
---|
493 |
|
---|
494 | void COND_PUSH(uint n) { BITSTACK_PUSH(ref cond_stack, (n)); }
|
---|
495 | void COND_POP() { BITSTACK_POP(ref cond_stack); }
|
---|
496 | void COND_LEXPOP() { BITSTACK_LEXPOP(ref cond_stack); }
|
---|
497 | stack_type COND_P() { return BITSTACK_SET_P(ref cond_stack); }
|
---|
498 |
|
---|
499 | void CMDARG_PUSH(uint n) { BITSTACK_PUSH(ref cmdarg_stack, (n)); }
|
---|
500 | void CMDARG_POP() { BITSTACK_POP(ref cmdarg_stack); }
|
---|
501 | void CMDARG_LEXPOP() { BITSTACK_LEXPOP(ref cmdarg_stack); }
|
---|
502 | stack_type CMDARG_P() { return BITSTACK_SET_P(ref cmdarg_stack); }
|
---|
503 |
|
---|
504 | string[] syms = new string[0];
|
---|
505 |
|
---|
506 | private mrb_sym get_sym(string str)
|
---|
507 | {
|
---|
508 | int i = Array.IndexOf(syms, str);
|
---|
509 | if (i < 0) {
|
---|
510 | i = syms.Length;
|
---|
511 | syms.Push(str);
|
---|
512 | }
|
---|
513 | return (mrb_sym)(i + 1);
|
---|
514 | }
|
---|
515 |
|
---|
516 | public string sym2name(mrb_sym sym)
|
---|
517 | {
|
---|
518 | int i = (int)sym - 1;
|
---|
519 | if ((i < 0) || (i >= syms.Length))
|
---|
520 | return ((int)sym).ToString();
|
---|
521 | return syms[i];
|
---|
522 | }
|
---|
523 |
|
---|
524 | mrb_sym mrb_intern(Uint8Array s, int len)
|
---|
525 | {
|
---|
526 | string str = UTF8ArrayToString(s.SubArray(0, len + 1), 0);
|
---|
527 | return get_sym(str);
|
---|
528 | }
|
---|
529 |
|
---|
530 | mrb_sym intern_cstr(Uint8Array s)
|
---|
531 | {
|
---|
532 | string str = UTF8ArrayToString(s.SubArray(0, strlen(s, 0) + 1), 0);
|
---|
533 | return get_sym(str);
|
---|
534 | }
|
---|
535 |
|
---|
536 | mrb_sym intern(string s, int len)
|
---|
537 | {
|
---|
538 | string str = s.Substring(0, len);
|
---|
539 | return get_sym(str);
|
---|
540 | }
|
---|
541 |
|
---|
542 | mrb_sym intern_c(char c)
|
---|
543 | {
|
---|
544 | string str = c.ToString();
|
---|
545 | return get_sym(str);
|
---|
546 | }
|
---|
547 |
|
---|
548 | public node cons(object car, object cdr)
|
---|
549 | {
|
---|
550 | return node.cons(this, car, cdr);
|
---|
551 | }
|
---|
552 |
|
---|
553 | public node list1(object a)
|
---|
554 | {
|
---|
555 | return cons(a, null);
|
---|
556 | }
|
---|
557 |
|
---|
558 | public node list2(object a, object b)
|
---|
559 | {
|
---|
560 | return cons(a, cons(b, null));
|
---|
561 | }
|
---|
562 |
|
---|
563 | public node list3(object a, object b, object c)
|
---|
564 | {
|
---|
565 | return cons(a, cons(b, cons(c, null)));
|
---|
566 | }
|
---|
567 |
|
---|
568 | public node list4(object a, object b, object c, object d)
|
---|
569 | {
|
---|
570 | return cons(a, cons(b, cons(c, cons(d, null))));
|
---|
571 | }
|
---|
572 |
|
---|
573 | public node list5(object a, object b, object c, object d, object e)
|
---|
574 | {
|
---|
575 | return cons(a, cons(b, cons(c, cons(d, cons(e, null)))));
|
---|
576 | }
|
---|
577 |
|
---|
578 | node append(node a, node b)
|
---|
579 | {
|
---|
580 | if (a == null) return b;
|
---|
581 | a.append(b);
|
---|
582 | return a;
|
---|
583 | }
|
---|
584 |
|
---|
585 | node push(node a, object b)
|
---|
586 | {
|
---|
587 | return append(a, list1(b));
|
---|
588 | }
|
---|
589 |
|
---|
590 | /* xxx ----------------------------- */
|
---|
591 |
|
---|
592 | locals_node local_switch()
|
---|
593 | {
|
---|
594 | var prev = this.locals;
|
---|
595 | this.locals = new locals_node(null);
|
---|
596 | return prev;
|
---|
597 | }
|
---|
598 |
|
---|
599 | void local_resume(locals_node prev)
|
---|
600 | {
|
---|
601 | this.locals = prev;
|
---|
602 | }
|
---|
603 |
|
---|
604 | void local_nest()
|
---|
605 | {
|
---|
606 | this.locals = new locals_node(this.locals);
|
---|
607 | }
|
---|
608 |
|
---|
609 | void local_unnest()
|
---|
610 | {
|
---|
611 | if (this.locals != null) {
|
---|
612 | this.locals = this.locals.cdr;
|
---|
613 | }
|
---|
614 | }
|
---|
615 |
|
---|
616 | bool local_var_p(mrb_sym sym)
|
---|
617 | {
|
---|
618 | locals_node l = this.locals;
|
---|
619 |
|
---|
620 | while (l != null) {
|
---|
621 | if (l.symList.Contains(sym))
|
---|
622 | return true;
|
---|
623 | l = l.cdr;
|
---|
624 | }
|
---|
625 | return false;
|
---|
626 | }
|
---|
627 |
|
---|
628 | void local_add_f(mrb_sym sym)
|
---|
629 | {
|
---|
630 | if (this.locals != null) {
|
---|
631 | this.locals.push(sym);
|
---|
632 | }
|
---|
633 | }
|
---|
634 |
|
---|
635 | void local_add(mrb_sym sym)
|
---|
636 | {
|
---|
637 | if (!local_var_p(sym)) {
|
---|
638 | local_add_f(sym);
|
---|
639 | }
|
---|
640 | }
|
---|
641 |
|
---|
642 | public mrb_sym[] locals_node()
|
---|
643 | {
|
---|
644 | return this.locals != null ? this.locals.symList : null;
|
---|
645 | }
|
---|
646 |
|
---|
647 | /* (:scope (vars..) (prog...)) */
|
---|
648 | scope_node new_scope(node body)
|
---|
649 | {
|
---|
650 | return new scope_node(this, body);
|
---|
651 | }
|
---|
652 |
|
---|
653 | /* (:begin prog...) */
|
---|
654 | begin_node new_begin(node body)
|
---|
655 | {
|
---|
656 | return new begin_node(this, body);
|
---|
657 | }
|
---|
658 |
|
---|
659 | node newline_node(node n)
|
---|
660 | {
|
---|
661 | return n;
|
---|
662 | }
|
---|
663 |
|
---|
664 | /* (:rescue body rescue else) */
|
---|
665 | rescue_node new_rescue(node body, node resq, node els)
|
---|
666 | {
|
---|
667 | return new rescue_node(this, body, resq, els);
|
---|
668 | }
|
---|
669 |
|
---|
670 | rescue_node new_mod_rescue(node body, node resq)
|
---|
671 | {
|
---|
672 | return new_rescue(body, list1(list3(null, null, resq)), null);
|
---|
673 | }
|
---|
674 |
|
---|
675 | /* (:ensure body ensure) */
|
---|
676 | ensure_node new_ensure(node a, node b)
|
---|
677 | {
|
---|
678 | return new ensure_node(this, a, b);
|
---|
679 | }
|
---|
680 |
|
---|
681 | /* (:nil) */
|
---|
682 | nil_node new_nil()
|
---|
683 | {
|
---|
684 | return new nil_node(this);
|
---|
685 | }
|
---|
686 |
|
---|
687 | /* (:true) */
|
---|
688 | true_node new_true()
|
---|
689 | {
|
---|
690 | return new true_node(this);
|
---|
691 | }
|
---|
692 |
|
---|
693 | /* (:false) */
|
---|
694 | false_node new_false()
|
---|
695 | {
|
---|
696 | return new false_node(this);
|
---|
697 | }
|
---|
698 |
|
---|
699 | /* (:alias new old) */
|
---|
700 | alias_node new_alias(mrb_sym a, mrb_sym b)
|
---|
701 | {
|
---|
702 | return new alias_node(this, a, b);
|
---|
703 | }
|
---|
704 |
|
---|
705 | /* (:if cond then else) */
|
---|
706 | if_node new_if(node a, node b, node c, bool inline = false)
|
---|
707 | {
|
---|
708 | return new if_node(this, a, b, c, inline);
|
---|
709 | }
|
---|
710 |
|
---|
711 | /* (:unless cond then else) */
|
---|
712 | unless_node new_unless(node a, node b, node c)
|
---|
713 | {
|
---|
714 | return new unless_node(this, a, b, c);
|
---|
715 | }
|
---|
716 |
|
---|
717 | /* (:while cond body) */
|
---|
718 | while_node new_while(node a, node b)
|
---|
719 | {
|
---|
720 | return new while_node(this, a, b);
|
---|
721 | }
|
---|
722 |
|
---|
723 | /* (:until cond body) */
|
---|
724 | until_node new_until(node a, node b)
|
---|
725 | {
|
---|
726 | return new until_node(this, a, b);
|
---|
727 | }
|
---|
728 |
|
---|
729 | /* (:for var obj body) */
|
---|
730 | for_node new_for(node v, node o, node b)
|
---|
731 | {
|
---|
732 | return new for_node(this, v, o, b);
|
---|
733 | }
|
---|
734 |
|
---|
735 | /* (:case a ((when ...) body) ((when...) body)) */
|
---|
736 | case_node new_case(node a, node b)
|
---|
737 | {
|
---|
738 | return new case_node(this, a, b);
|
---|
739 | }
|
---|
740 |
|
---|
741 | /* (:postexe a) */
|
---|
742 | postexe_node new_postexe(node a)
|
---|
743 | {
|
---|
744 | return new postexe_node(this, a);
|
---|
745 | }
|
---|
746 |
|
---|
747 | /* (:self) */
|
---|
748 | internal self_node new_self()
|
---|
749 | {
|
---|
750 | return new self_node(this);
|
---|
751 | }
|
---|
752 |
|
---|
753 | /* (:call a b c) */
|
---|
754 | call_node new_call(node a, mrb_sym b, node c, MrbTokens pass)
|
---|
755 | {
|
---|
756 | return new call_node(this, a, b, c, pass);
|
---|
757 | }
|
---|
758 |
|
---|
759 | /* (:fcall self mid args) */
|
---|
760 | fcall_node new_fcall(mrb_sym b, node c)
|
---|
761 | {
|
---|
762 | return new fcall_node(this, b, c);
|
---|
763 | }
|
---|
764 |
|
---|
765 | /* (:super . c) */
|
---|
766 | super_node new_super(node c)
|
---|
767 | {
|
---|
768 | return new super_node(this, c);
|
---|
769 | }
|
---|
770 |
|
---|
771 | /* (:zsuper) */
|
---|
772 | zsuper_node new_zsuper()
|
---|
773 | {
|
---|
774 | return new zsuper_node(this);
|
---|
775 | }
|
---|
776 |
|
---|
777 | /* (:yield . c) */
|
---|
778 | yield_node new_yield(node c)
|
---|
779 | {
|
---|
780 | return new yield_node(this, c);
|
---|
781 | }
|
---|
782 |
|
---|
783 | /* (:return . c) */
|
---|
784 | return_node new_return(node c)
|
---|
785 | {
|
---|
786 | return new return_node(this, c);
|
---|
787 | }
|
---|
788 |
|
---|
789 | /* (:break . c) */
|
---|
790 | break_node new_break(node c)
|
---|
791 | {
|
---|
792 | return new break_node(this, c);
|
---|
793 | }
|
---|
794 |
|
---|
795 | /* (:next . c) */
|
---|
796 | next_node new_next(node c)
|
---|
797 | {
|
---|
798 | return new next_node(this, c);
|
---|
799 | }
|
---|
800 |
|
---|
801 | /* (:redo) */
|
---|
802 | redo_node new_redo()
|
---|
803 | {
|
---|
804 | return new redo_node(this);
|
---|
805 | }
|
---|
806 |
|
---|
807 | /* (:retry) */
|
---|
808 | retry_node new_retry()
|
---|
809 | {
|
---|
810 | return new retry_node(this);
|
---|
811 | }
|
---|
812 |
|
---|
813 | /* (:dot2 a b) */
|
---|
814 | dot2_node new_dot2(node a, node b)
|
---|
815 | {
|
---|
816 | return new dot2_node(this, a, b);
|
---|
817 | }
|
---|
818 |
|
---|
819 | /* (:dot3 a b) */
|
---|
820 | dot3_node new_dot3(node a, node b)
|
---|
821 | {
|
---|
822 | return new dot3_node(this, a, b);
|
---|
823 | }
|
---|
824 |
|
---|
825 | /* (:colon2 b c) */
|
---|
826 | colon2_node new_colon2(node b, mrb_sym c)
|
---|
827 | {
|
---|
828 | return new colon2_node(this, b, c);
|
---|
829 | }
|
---|
830 |
|
---|
831 | /* (:colon3 . c) */
|
---|
832 | colon3_node new_colon3(mrb_sym c)
|
---|
833 | {
|
---|
834 | return new colon3_node(this, c);
|
---|
835 | }
|
---|
836 |
|
---|
837 | /* (:and a b) */
|
---|
838 | and_node new_and(node a, node b)
|
---|
839 | {
|
---|
840 | return new and_node(this, a, b);
|
---|
841 | }
|
---|
842 |
|
---|
843 | /* (:or a b) */
|
---|
844 | or_node new_or(node a, node b)
|
---|
845 | {
|
---|
846 | return new or_node(this, a, b);
|
---|
847 | }
|
---|
848 |
|
---|
849 | /* (:array a...) */
|
---|
850 | array_node new_array(node a)
|
---|
851 | {
|
---|
852 | return new array_node(this, a);
|
---|
853 | }
|
---|
854 |
|
---|
855 | /* (:splat . a) */
|
---|
856 | splat_node new_splat(node a)
|
---|
857 | {
|
---|
858 | return new splat_node(this, a);
|
---|
859 | }
|
---|
860 |
|
---|
861 | /* (:hash (k . v) (k . v)...) */
|
---|
862 | hash_node new_hash(node a)
|
---|
863 | {
|
---|
864 | return new hash_node(this, a);
|
---|
865 | }
|
---|
866 |
|
---|
867 | /* (:sym . a) */
|
---|
868 | sym_node new_sym(mrb_sym sym)
|
---|
869 | {
|
---|
870 | return new sym_node(this, sym);
|
---|
871 | }
|
---|
872 |
|
---|
873 | mrb_sym new_strsym(node str)
|
---|
874 | {
|
---|
875 | Uint8Array s;
|
---|
876 | int len;
|
---|
877 |
|
---|
878 | if (str is str_node) {
|
---|
879 | s = ((str_node)str).str;
|
---|
880 | len = ((str_node)str).len;
|
---|
881 | }
|
---|
882 | else {
|
---|
883 | s = (Uint8Array)((node)str.cdr).car;
|
---|
884 | len = (int)((node)str.cdr).cdr;
|
---|
885 | }
|
---|
886 |
|
---|
887 | return mrb_intern(s, len);
|
---|
888 | }
|
---|
889 |
|
---|
890 | /* (:lvar . a) */
|
---|
891 | lvar_node new_lvar(mrb_sym sym)
|
---|
892 | {
|
---|
893 | return new lvar_node(this, sym);
|
---|
894 | }
|
---|
895 |
|
---|
896 | /* (:gvar . a) */
|
---|
897 | gvar_node new_gvar(mrb_sym sym)
|
---|
898 | {
|
---|
899 | return new gvar_node(this, sym);
|
---|
900 | }
|
---|
901 |
|
---|
902 | /* (:ivar . a) */
|
---|
903 | ivar_node new_ivar(mrb_sym sym)
|
---|
904 | {
|
---|
905 | return new ivar_node(this, sym);
|
---|
906 | }
|
---|
907 |
|
---|
908 | /* (:cvar . a) */
|
---|
909 | cvar_node new_cvar(mrb_sym sym)
|
---|
910 | {
|
---|
911 | return new cvar_node(this, sym);
|
---|
912 | }
|
---|
913 |
|
---|
914 | /* (:const . a) */
|
---|
915 | const_node new_const(mrb_sym sym)
|
---|
916 | {
|
---|
917 | return new const_node(this, sym);
|
---|
918 | }
|
---|
919 |
|
---|
920 | /* (:undef a...) */
|
---|
921 | undef_node new_undef(mrb_sym sym)
|
---|
922 | {
|
---|
923 | return new undef_node(this, sym);
|
---|
924 | }
|
---|
925 |
|
---|
926 | /* (:class class super body) */
|
---|
927 | class_node new_class(node c, node s, node b)
|
---|
928 | {
|
---|
929 | return new class_node(this, c, s, b);
|
---|
930 | }
|
---|
931 |
|
---|
932 | /* (:sclass obj body) */
|
---|
933 | sclass_node new_sclass(node o, node b)
|
---|
934 | {
|
---|
935 | return new sclass_node(this, o, b);
|
---|
936 | }
|
---|
937 |
|
---|
938 | /* (:module module body) */
|
---|
939 | module_node new_module(node m, node b)
|
---|
940 | {
|
---|
941 | return new module_node(this, m, b);
|
---|
942 | }
|
---|
943 |
|
---|
944 | /* (:def m lv (arg . body)) */
|
---|
945 | def_node new_def(mrb_sym m, node a, node b)
|
---|
946 | {
|
---|
947 | return new def_node(this, m, a, b);
|
---|
948 | }
|
---|
949 |
|
---|
950 | /* (:sdef obj m lv (arg . body)) */
|
---|
951 | sdef_node new_sdef(node o, mrb_sym m, node a, node b)
|
---|
952 | {
|
---|
953 | return new sdef_node(this, o, m, a, b);
|
---|
954 | }
|
---|
955 |
|
---|
956 | /* (:arg . sym) */
|
---|
957 | arg_node new_arg(mrb_sym sym)
|
---|
958 | {
|
---|
959 | return new arg_node(this, sym);
|
---|
960 | }
|
---|
961 |
|
---|
962 | /* (m o r m2 b) */
|
---|
963 | /* m: (a b c) */
|
---|
964 | /* o: ((a . e1) (b . e2)) */
|
---|
965 | /* r: a */
|
---|
966 | /* m2: (a b c) */
|
---|
967 | /* b: a */
|
---|
968 | node new_args(node m, node opt, mrb_sym rest, node m2, mrb_sym blk)
|
---|
969 | {
|
---|
970 | node n;
|
---|
971 |
|
---|
972 | n = cons(m2, blk);
|
---|
973 | n = cons(rest, n);
|
---|
974 | n = cons(opt, n);
|
---|
975 | return cons(m, n);
|
---|
976 | }
|
---|
977 |
|
---|
978 | /* (:block_arg . a) */
|
---|
979 | block_arg_node new_block_arg(node a)
|
---|
980 | {
|
---|
981 | return new block_arg_node(this, a);
|
---|
982 | }
|
---|
983 |
|
---|
984 | /* (:block arg body) */
|
---|
985 | block_node new_block(node a, node b, bool brace)
|
---|
986 | {
|
---|
987 | return new block_node(this, a, b, brace);
|
---|
988 | }
|
---|
989 |
|
---|
990 | /* (:lambda arg body) */
|
---|
991 | lambda_node new_lambda(node a, node b)
|
---|
992 | {
|
---|
993 | return new lambda_node(this, a, b);
|
---|
994 | }
|
---|
995 |
|
---|
996 | /* (:asgn lhs rhs) */
|
---|
997 | asgn_node new_asgn(node a, node b)
|
---|
998 | {
|
---|
999 | return new asgn_node(this, a, b);
|
---|
1000 | }
|
---|
1001 |
|
---|
1002 | /* (:masgn mlhs=(pre rest post) mrhs) */
|
---|
1003 | masgn_node new_masgn(node a, node b)
|
---|
1004 | {
|
---|
1005 | return new masgn_node(this, a, b);
|
---|
1006 | }
|
---|
1007 |
|
---|
1008 | /* (:asgn lhs rhs) */
|
---|
1009 | op_asgn_node new_op_asgn(node a, mrb_sym op, node b)
|
---|
1010 | {
|
---|
1011 | return new op_asgn_node(this, a, op, b);
|
---|
1012 | }
|
---|
1013 |
|
---|
1014 | /* (:int . i) */
|
---|
1015 | int_node new_int(Uint8Array s, int _base)
|
---|
1016 | {
|
---|
1017 | return new int_node(this, s, _base);
|
---|
1018 | }
|
---|
1019 |
|
---|
1020 | int_node new_int(string s, int _base) { return new_int(MrbParser.UTF8StringToArray(s), _base); }
|
---|
1021 |
|
---|
1022 | /* (:float . i) */
|
---|
1023 | float_node new_float(Uint8Array s)
|
---|
1024 | {
|
---|
1025 | return new float_node(this, s);
|
---|
1026 | }
|
---|
1027 |
|
---|
1028 | /* (:str . (s . len)) */
|
---|
1029 | str_node new_str(Uint8Array s, int len)
|
---|
1030 | {
|
---|
1031 | return new str_node(this, s, len);
|
---|
1032 | }
|
---|
1033 |
|
---|
1034 | str_node new_str(string s, int len) { return new_str(MrbParser.UTF8StringToArray(s), len); }
|
---|
1035 |
|
---|
1036 | /* (:dstr . a) */
|
---|
1037 | internal dstr_node new_dstr(node a)
|
---|
1038 | {
|
---|
1039 | return new dstr_node(this, a);
|
---|
1040 | }
|
---|
1041 |
|
---|
1042 | /* (:str . (s . len)) */
|
---|
1043 | xstr_node new_xstr(Uint8Array s, int len)
|
---|
1044 | {
|
---|
1045 | return new xstr_node(this, s, len);
|
---|
1046 | }
|
---|
1047 |
|
---|
1048 | /* (:xstr . a) */
|
---|
1049 | dxstr_node new_dxstr(node a)
|
---|
1050 | {
|
---|
1051 | return new dxstr_node(this, a);
|
---|
1052 | }
|
---|
1053 |
|
---|
1054 | /* (:dsym . a) */
|
---|
1055 | dsym_node new_dsym(node a)
|
---|
1056 | {
|
---|
1057 | return new dsym_node(this, a);
|
---|
1058 | }
|
---|
1059 |
|
---|
1060 | /* (:str . (a . a)) */
|
---|
1061 | regx_node new_regx(Uint8Array p1, Uint8Array p2, Uint8Array p3)
|
---|
1062 | {
|
---|
1063 | return new regx_node(this, p1, p2, p3);
|
---|
1064 | }
|
---|
1065 |
|
---|
1066 | /* (:dregx . a) */
|
---|
1067 | dregx_node new_dregx(node a, node b)
|
---|
1068 | {
|
---|
1069 | return new dregx_node(this, a, b);
|
---|
1070 | }
|
---|
1071 |
|
---|
1072 | /* (:backref . n) */
|
---|
1073 | back_ref_node new_back_ref(int n)
|
---|
1074 | {
|
---|
1075 | return new back_ref_node(this, n);
|
---|
1076 | }
|
---|
1077 |
|
---|
1078 | /* (:nthref . n) */
|
---|
1079 | nth_ref_node new_nth_ref(int n)
|
---|
1080 | {
|
---|
1081 | return new nth_ref_node(this, n);
|
---|
1082 | }
|
---|
1083 |
|
---|
1084 | /* (:heredoc . a) */
|
---|
1085 | heredoc_node new_heredoc()
|
---|
1086 | {
|
---|
1087 | return new heredoc_node(this);
|
---|
1088 | }
|
---|
1089 |
|
---|
1090 | void new_bv(mrb_sym id)
|
---|
1091 | {
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 | literal_delim_node new_literal_delim()
|
---|
1095 | {
|
---|
1096 | return new literal_delim_node(this);
|
---|
1097 | }
|
---|
1098 |
|
---|
1099 | /* (:words . a) */
|
---|
1100 | words_node new_words(node a)
|
---|
1101 | {
|
---|
1102 | return new words_node(this, a);
|
---|
1103 | }
|
---|
1104 |
|
---|
1105 | /* (:symbols . a) */
|
---|
1106 | symbols_node new_symbols(node a)
|
---|
1107 | {
|
---|
1108 | return new symbols_node(this, a);
|
---|
1109 | }
|
---|
1110 |
|
---|
1111 | filename_node new_filename(string s)
|
---|
1112 | {
|
---|
1113 | var str = MrbParser.UTF8StringToArray(s);
|
---|
1114 | return new filename_node(this, str, str.Length);
|
---|
1115 | }
|
---|
1116 |
|
---|
1117 | lineno_node new_lineno(int lineno)
|
---|
1118 | {
|
---|
1119 | return new lineno_node(this, lineno);
|
---|
1120 | }
|
---|
1121 |
|
---|
1122 | /* xxx ----------------------------- */
|
---|
1123 |
|
---|
1124 | /* (:call a op) */
|
---|
1125 | node call_uni_op(node recv, string m)
|
---|
1126 | {
|
---|
1127 | return new_call(recv, intern_cstr(MrbParser.UTF8StringToArray(m)), null, (MrbTokens)1);
|
---|
1128 | }
|
---|
1129 |
|
---|
1130 | /* (:call a op b) */
|
---|
1131 | node call_bin_op(node recv, string m, node arg1)
|
---|
1132 | {
|
---|
1133 | return new_call(recv, intern_cstr(MrbParser.UTF8StringToArray(m)), list1(list1(arg1)), (MrbTokens)1);
|
---|
1134 | }
|
---|
1135 |
|
---|
1136 | void args_with_block(node a, node b)
|
---|
1137 | {
|
---|
1138 | if (b != null) {
|
---|
1139 | if (a.cdr != null) {
|
---|
1140 | yyError("both block arg and actual block given");
|
---|
1141 | }
|
---|
1142 | a.cdr = b;
|
---|
1143 | }
|
---|
1144 | }
|
---|
1145 |
|
---|
1146 | void call_with_block(node a, node b)
|
---|
1147 | {
|
---|
1148 | switch ((node_type)a.car) {
|
---|
1149 | case node_type.NODE_SUPER:
|
---|
1150 | ((super_node)a).add_block(b);
|
---|
1151 | break;
|
---|
1152 | case node_type.NODE_ZSUPER:
|
---|
1153 | ((zsuper_node)a).add_block(b);
|
---|
1154 | break;
|
---|
1155 | case node_type.NODE_CALL:
|
---|
1156 | ((call_node)a).add_block(b);
|
---|
1157 | break;
|
---|
1158 | case node_type.NODE_FCALL:
|
---|
1159 | ((fcall_node)a).add_block(b);
|
---|
1160 | break;
|
---|
1161 | default:
|
---|
1162 | break;
|
---|
1163 | }
|
---|
1164 | }
|
---|
1165 |
|
---|
1166 | node negate_lit(node n)
|
---|
1167 | {
|
---|
1168 | return new negate_node(this, n);
|
---|
1169 | }
|
---|
1170 |
|
---|
1171 | static node cond(node n)
|
---|
1172 | {
|
---|
1173 | return n;
|
---|
1174 | }
|
---|
1175 |
|
---|
1176 | node ret_args(node n)
|
---|
1177 | {
|
---|
1178 | if (n.cdr != null) {
|
---|
1179 | yyError("block argument should not be given");
|
---|
1180 | return null;
|
---|
1181 | }
|
---|
1182 | if (((node)n.car).cdr == null) return (node)((node)n.car).car;
|
---|
1183 | return new_array((node)n.car);
|
---|
1184 | }
|
---|
1185 |
|
---|
1186 | void assignable(node lhs)
|
---|
1187 | {
|
---|
1188 | var lvar = lhs as lvar_node;
|
---|
1189 | if (lvar != null) {
|
---|
1190 | local_add(lvar.name);
|
---|
1191 | }
|
---|
1192 | }
|
---|
1193 |
|
---|
1194 | node var_reference(node lhs)
|
---|
1195 | {
|
---|
1196 | node n;
|
---|
1197 |
|
---|
1198 | var lvar = lhs as lvar_node;
|
---|
1199 | if (lvar != null) {
|
---|
1200 | if (!local_var_p(lvar.name)) {
|
---|
1201 | n = new_fcall(lvar.name, null);
|
---|
1202 | return n;
|
---|
1203 | }
|
---|
1204 | }
|
---|
1205 |
|
---|
1206 | return lhs;
|
---|
1207 | }
|
---|
1208 |
|
---|
1209 | node new_strterm(mrb_string_type type, int term, int paren)
|
---|
1210 | {
|
---|
1211 | return cons(type, cons(0, cons(paren, term)));
|
---|
1212 | }
|
---|
1213 |
|
---|
1214 | void end_strterm()
|
---|
1215 | {
|
---|
1216 | this.lex_strterm = null;
|
---|
1217 | }
|
---|
1218 |
|
---|
1219 | parser_heredoc_info parsing_heredoc_inf()
|
---|
1220 | {
|
---|
1221 | node nd = this.parsing_heredoc;
|
---|
1222 | if (nd == null)
|
---|
1223 | return null;
|
---|
1224 | /* mrb_assert(nd.car.car == node_type.NODE_HEREDOC); */
|
---|
1225 | return ((heredoc_node)nd.car).info;
|
---|
1226 | }
|
---|
1227 |
|
---|
1228 | void heredoc_treat_nextline()
|
---|
1229 | {
|
---|
1230 | if (this.heredocs_from_nextline == null)
|
---|
1231 | return;
|
---|
1232 | if (this.parsing_heredoc == null) {
|
---|
1233 | node n;
|
---|
1234 | this.parsing_heredoc = this.heredocs_from_nextline;
|
---|
1235 | this.lex_strterm_before_heredoc = this.lex_strterm;
|
---|
1236 | this.lex_strterm = new_strterm(parsing_heredoc_inf().type, 0, 0);
|
---|
1237 | n = this.all_heredocs;
|
---|
1238 | if (n != null) {
|
---|
1239 | while (n.cdr != null)
|
---|
1240 | n = (node)n.cdr;
|
---|
1241 | n.cdr = this.parsing_heredoc;
|
---|
1242 | }
|
---|
1243 | else {
|
---|
1244 | this.all_heredocs = this.parsing_heredoc;
|
---|
1245 | }
|
---|
1246 | }
|
---|
1247 | else {
|
---|
1248 | node n, m;
|
---|
1249 | m = this.heredocs_from_nextline;
|
---|
1250 | while (m.cdr != null)
|
---|
1251 | m = (node)m.cdr;
|
---|
1252 | n = this.all_heredocs;
|
---|
1253 | mrb_assert(n != null);
|
---|
1254 | if (n == this.parsing_heredoc) {
|
---|
1255 | m.cdr = n;
|
---|
1256 | this.all_heredocs = this.heredocs_from_nextline;
|
---|
1257 | this.parsing_heredoc = this.heredocs_from_nextline;
|
---|
1258 | }
|
---|
1259 | else {
|
---|
1260 | while (n.cdr != this.parsing_heredoc) {
|
---|
1261 | n = (node)n.cdr;
|
---|
1262 | mrb_assert(n != null);
|
---|
1263 | }
|
---|
1264 | m.cdr = n.cdr;
|
---|
1265 | n.cdr = this.heredocs_from_nextline;
|
---|
1266 | this.parsing_heredoc = this.heredocs_from_nextline;
|
---|
1267 | }
|
---|
1268 | }
|
---|
1269 | this.heredocs_from_nextline = null;
|
---|
1270 | }
|
---|
1271 |
|
---|
1272 | void heredoc_end()
|
---|
1273 | {
|
---|
1274 | this.parsing_heredoc = (node)this.parsing_heredoc.cdr;
|
---|
1275 | if (this.parsing_heredoc == null) {
|
---|
1276 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
1277 | this.cmd_start = true;
|
---|
1278 | end_strterm();
|
---|
1279 | this.lex_strterm = (node)this.lex_strterm_before_heredoc;
|
---|
1280 | this.lex_strterm_before_heredoc = null;
|
---|
1281 | }
|
---|
1282 | else {
|
---|
1283 | /* next heredoc */
|
---|
1284 | this.lex_strterm.car = parsing_heredoc_inf().type;
|
---|
1285 | }
|
---|
1286 | }
|
---|
1287 |
|
---|
1288 | bool is_strterm_type(mrb_string_type str_func)
|
---|
1289 | {
|
---|
1290 | return (((int)lex_strterm.car) & (int)str_func) != 0;
|
---|
1291 | }
|
---|
1292 |
|
---|
1293 | static Uint8Array begin = MrbParser.UTF8StringToArray("begin");
|
---|
1294 | static Uint8Array end = MrbParser.UTF8StringToArray("\n=end");
|
---|
1295 |
|
---|
1296 | void pushback(int c)
|
---|
1297 | {
|
---|
1298 | if (c >= 0) {
|
---|
1299 | column--;
|
---|
1300 | }
|
---|
1301 | this.pb = cons(c, this.pb);
|
---|
1302 | }
|
---|
1303 |
|
---|
1304 | void backref_error(node n)
|
---|
1305 | {
|
---|
1306 | var c = (node_type)n.car;
|
---|
1307 |
|
---|
1308 | if (c == node_type.NODE_NTH_REF) {
|
---|
1309 | yyError("can't set variable ${0}", ((int)n.cdr).ToString());
|
---|
1310 | }
|
---|
1311 | else if (c == node_type.NODE_BACK_REF) {
|
---|
1312 | yyError("can't set variable ${0}", ((char)n.cdr).ToString());
|
---|
1313 | }
|
---|
1314 | else {
|
---|
1315 | //mrb_bug(mrb, "Internal error in backref_error() : n=>car == %S", mrb_fixnum_value(c));
|
---|
1316 | }
|
---|
1317 | }
|
---|
1318 |
|
---|
1319 | void void_expr_error(node n)
|
---|
1320 | {
|
---|
1321 | if (n == null) return;
|
---|
1322 | switch ((node_type)n.car) {
|
---|
1323 | case node_type.NODE_BREAK:
|
---|
1324 | case node_type.NODE_RETURN:
|
---|
1325 | case node_type.NODE_NEXT:
|
---|
1326 | case node_type.NODE_REDO:
|
---|
1327 | case node_type.NODE_RETRY:
|
---|
1328 | yyError("void value expression");
|
---|
1329 | break;
|
---|
1330 | default:
|
---|
1331 | break;
|
---|
1332 | }
|
---|
1333 | }
|
---|
1334 |
|
---|
1335 | int nextc()
|
---|
1336 | {
|
---|
1337 | for (;;) {
|
---|
1338 | int c;
|
---|
1339 |
|
---|
1340 | if (this.pb != null) {
|
---|
1341 | node tmp;
|
---|
1342 |
|
---|
1343 | c = (int)this.pb.car;
|
---|
1344 | tmp = this.pb;
|
---|
1345 | this.pb = (node)this.pb.cdr;
|
---|
1346 | }
|
---|
1347 | else {
|
---|
1348 | #if false
|
---|
1349 | if (this.f != null) {
|
---|
1350 | if (!this.f.CanRead)
|
---|
1351 | break;
|
---|
1352 | c = this.f.ReadByte();
|
---|
1353 | if (c == -1) break;
|
---|
1354 | }
|
---|
1355 | else
|
---|
1356 | #endif
|
---|
1357 | if (this.s == null || this.sp >= this.s.Length) {
|
---|
1358 | break;
|
---|
1359 | }
|
---|
1360 | else {
|
---|
1361 | c = (byte)this.s[sp++];
|
---|
1362 | }
|
---|
1363 | }
|
---|
1364 | if (c >= 0) {
|
---|
1365 | this.column++;
|
---|
1366 | }
|
---|
1367 | if (c == '\r') {
|
---|
1368 | c = nextc();
|
---|
1369 | if (c != '\n') {
|
---|
1370 | pushback(c);
|
---|
1371 | return '\r';
|
---|
1372 | }
|
---|
1373 | return c;
|
---|
1374 | }
|
---|
1375 | return c;
|
---|
1376 | }
|
---|
1377 |
|
---|
1378 | if (this.partial_hook == null) return -1;
|
---|
1379 | else {
|
---|
1380 | if (this.partial_hook(this) < 0)
|
---|
1381 | return -1; /* end of program(s) */
|
---|
1382 | return -2; /* end of a file in the program files */
|
---|
1383 | }
|
---|
1384 | }
|
---|
1385 |
|
---|
1386 | void skip(char term)
|
---|
1387 | {
|
---|
1388 | int c;
|
---|
1389 |
|
---|
1390 | for (;;) {
|
---|
1391 | c = nextc();
|
---|
1392 | if (c < 0) break;
|
---|
1393 | if (c == term) break;
|
---|
1394 | }
|
---|
1395 | }
|
---|
1396 |
|
---|
1397 | int peekc_n(int n)
|
---|
1398 | {
|
---|
1399 | node list = null;
|
---|
1400 | int c0;
|
---|
1401 |
|
---|
1402 | do {
|
---|
1403 | c0 = nextc();
|
---|
1404 | if (c0 == -1) return c0; /* do not skip partial EOF */
|
---|
1405 | if (c0 >= 0) --column;
|
---|
1406 | list = push(list, c0);
|
---|
1407 | } while (n-- != 0);
|
---|
1408 | if (this.pb != null) {
|
---|
1409 | this.pb = append(list, this.pb);
|
---|
1410 | }
|
---|
1411 | else {
|
---|
1412 | this.pb = list;
|
---|
1413 | }
|
---|
1414 | return c0;
|
---|
1415 | }
|
---|
1416 |
|
---|
1417 | bool peek_n(int c, int n)
|
---|
1418 | {
|
---|
1419 | return peekc_n(n) == c && c >= 0;
|
---|
1420 | }
|
---|
1421 |
|
---|
1422 | bool peek(int c)
|
---|
1423 | {
|
---|
1424 | return peek_n(c, 0);
|
---|
1425 | }
|
---|
1426 |
|
---|
1427 | bool peeks(Uint8Array s, int p)
|
---|
1428 | {
|
---|
1429 | int len = strlen(s, p);
|
---|
1430 | #if false
|
---|
1431 | if (this.f != null) {
|
---|
1432 | int n = 0;
|
---|
1433 | while (s[p] != 0) {
|
---|
1434 | if (!peek_n(s[p++], n++)) return false;
|
---|
1435 | }
|
---|
1436 | return true;
|
---|
1437 | }
|
---|
1438 | else
|
---|
1439 | #endif
|
---|
1440 | if (this.s != null && this.sp + len <= this.s.Length) {
|
---|
1441 | if (memcmp(this.s, this.sp, s, p, len) == 0) return true;
|
---|
1442 | }
|
---|
1443 | return false;
|
---|
1444 | }
|
---|
1445 |
|
---|
1446 | bool skips(Uint8Array s, int p)
|
---|
1447 | {
|
---|
1448 | int c;
|
---|
1449 |
|
---|
1450 | for (;;) {
|
---|
1451 | /* skip until first char */
|
---|
1452 | for (;;) {
|
---|
1453 | c = nextc();
|
---|
1454 | if (c < 0) return c != 0;
|
---|
1455 | if (c == '\n') {
|
---|
1456 | this.lineno++;
|
---|
1457 | this.column = 0;
|
---|
1458 | }
|
---|
1459 | if (c == s[p]) break;
|
---|
1460 | }
|
---|
1461 | p++;
|
---|
1462 | if (peeks(s, p)) {
|
---|
1463 | int len = strlen(s, p);
|
---|
1464 |
|
---|
1465 | while (len-- != 0) {
|
---|
1466 | if (nextc() == '\n') {
|
---|
1467 | this.lineno++;
|
---|
1468 | this.column = 0;
|
---|
1469 | }
|
---|
1470 | }
|
---|
1471 | return true;
|
---|
1472 | }
|
---|
1473 | else {
|
---|
1474 | p--;
|
---|
1475 | }
|
---|
1476 | }
|
---|
1477 | }
|
---|
1478 |
|
---|
1479 | int newtok()
|
---|
1480 | {
|
---|
1481 | if (this.tokbuf != this.buf) {
|
---|
1482 | //delete this.tokbuf;
|
---|
1483 | this.tokbuf = this.buf;
|
---|
1484 | this.tsiz = MRB_PARSER_TOKBUF_SIZE;
|
---|
1485 | }
|
---|
1486 | this.tidx = 0;
|
---|
1487 | return this.column - 1;
|
---|
1488 | }
|
---|
1489 |
|
---|
1490 | void tokadd(int c)
|
---|
1491 | {
|
---|
1492 | Uint8Array utf8 = new Uint8Array(4);
|
---|
1493 | int len;
|
---|
1494 |
|
---|
1495 | /* mrb_assert(-0x10FFFF <= c && c <= 0xFF); */
|
---|
1496 | if (c >= 0) {
|
---|
1497 | /* Single byte from source or non-Unicode escape */
|
---|
1498 | utf8[0] = (byte)c;
|
---|
1499 | len = 1;
|
---|
1500 | }
|
---|
1501 | else {
|
---|
1502 | /* Unicode character */
|
---|
1503 | c = -c;
|
---|
1504 | if (c < 0x80) {
|
---|
1505 | utf8[0] = (byte)c;
|
---|
1506 | len = 1;
|
---|
1507 | }
|
---|
1508 | else if (c < 0x800) {
|
---|
1509 | utf8[0] = (byte)(0xC0 | (c >> 6));
|
---|
1510 | utf8[1] = (byte)(0x80 | (c & 0x3F));
|
---|
1511 | len = 2;
|
---|
1512 | }
|
---|
1513 | else if (c < 0x10000) {
|
---|
1514 | utf8[0] = (byte)(0xE0 | (c >> 12));
|
---|
1515 | utf8[1] = (byte)(0x80 | ((c >> 6) & 0x3F));
|
---|
1516 | utf8[2] = (byte)(0x80 | (c & 0x3F));
|
---|
1517 | len = 3;
|
---|
1518 | }
|
---|
1519 | else {
|
---|
1520 | utf8[0] = (byte)(0xF0 | (c >> 18));
|
---|
1521 | utf8[1] = (byte)(0x80 | ((c >> 12) & 0x3F));
|
---|
1522 | utf8[2] = (byte)(0x80 | ((c >> 6) & 0x3F));
|
---|
1523 | utf8[3] = (byte)(0x80 | (c & 0x3F));
|
---|
1524 | len = 4;
|
---|
1525 | }
|
---|
1526 | }
|
---|
1527 | if (this.tidx + len >= this.tsiz) {
|
---|
1528 | if (this.tsiz >= MRB_PARSER_TOKBUF_MAX) {
|
---|
1529 | this.tidx += len;
|
---|
1530 | return;
|
---|
1531 | }
|
---|
1532 | this.tsiz *= 2;
|
---|
1533 | if (this.tokbuf == this.buf) {
|
---|
1534 | this.tokbuf = new Uint8Array(this.tsiz);
|
---|
1535 | //for(int i = 0; i < MRB_PARSER_TOKBUF_SIZE; i++) this.tokbuf[i] = this.buf[i];
|
---|
1536 | this.tokbuf.Set(this.buf, 0);
|
---|
1537 | }
|
---|
1538 | else {
|
---|
1539 | var buf = new Uint8Array(this.tsiz);
|
---|
1540 | buf.Set(this.tokbuf, 0);
|
---|
1541 | this.tokbuf = buf;
|
---|
1542 | }
|
---|
1543 | }
|
---|
1544 | for (int i = 0; i < len; i++) {
|
---|
1545 | this.tokbuf[this.tidx++] = utf8[i];
|
---|
1546 | }
|
---|
1547 | }
|
---|
1548 |
|
---|
1549 | int toklast()
|
---|
1550 | {
|
---|
1551 | return this.tokbuf[this.tidx - 1];
|
---|
1552 | }
|
---|
1553 |
|
---|
1554 | void tokfix()
|
---|
1555 | {
|
---|
1556 | if (this.tidx >= MRB_PARSER_TOKBUF_MAX) {
|
---|
1557 | this.tidx = MRB_PARSER_TOKBUF_MAX - 1;
|
---|
1558 | yyError("string too long (truncated)");
|
---|
1559 | }
|
---|
1560 | this.tokbuf[this.tidx] = (byte)'\0';
|
---|
1561 | }
|
---|
1562 |
|
---|
1563 | Uint8Array tok()
|
---|
1564 | {
|
---|
1565 | return this.tokbuf;
|
---|
1566 | }
|
---|
1567 |
|
---|
1568 | int toklen()
|
---|
1569 | {
|
---|
1570 | return this.tidx;
|
---|
1571 | }
|
---|
1572 |
|
---|
1573 | bool ISASCII(int c) { return ((uint)c <= 0x7f); }
|
---|
1574 | bool ISPRINT(int c) { return ((uint)(c - 0x20) < 0x5f); }
|
---|
1575 | bool ISSPACE(int c) { return (c == ' ' || (uint)(c - '\t') < 5); }
|
---|
1576 | bool ISUPPER(int c) { return ((uint)(c - 'A') < 26); }
|
---|
1577 | bool ISLOWER(int c) { return ((uint)(c - 'a') < 26); }
|
---|
1578 | bool ISALPHA(int c) { return ((uint)((c | 0x20) - 'a') < 26); }
|
---|
1579 | bool ISDIGIT(int c) { return ((uint)(c - '0') < 10); }
|
---|
1580 | bool ISXDIGIT(int c) { return (ISDIGIT(c) || (uint)((c | 0x20) - 'a') < 6); }
|
---|
1581 | bool ISALNUM(int c) { return (ISALPHA(c) || ISDIGIT(c)); }
|
---|
1582 | bool ISBLANK(int c) { return (c == ' ' || c == '\t'); }
|
---|
1583 | bool ISCNTRL(int c) { return ((uint)c < 0x20 || c == 0x7f); }
|
---|
1584 | int TOUPPER(int c) { return (ISLOWER(c) ? (c & 0x5f) : (c)); }
|
---|
1585 | int TOLOWER(int c) { return (ISUPPER(c) ? (c | 0x20) : (c)); }
|
---|
1586 |
|
---|
1587 | bool IS_ARG() { return (this.lstate == mrb_lex_state_enum.EXPR_ARG || this.lstate == mrb_lex_state_enum.EXPR_CMDARG); }
|
---|
1588 | bool IS_END() { return (this.lstate == mrb_lex_state_enum.EXPR_END || this.lstate == mrb_lex_state_enum.EXPR_ENDARG || this.lstate == mrb_lex_state_enum.EXPR_ENDFN); }
|
---|
1589 | bool IS_BEG() { return (this.lstate == mrb_lex_state_enum.EXPR_BEG || this.lstate == mrb_lex_state_enum.EXPR_MID || this.lstate == mrb_lex_state_enum.EXPR_VALUE || this.lstate == mrb_lex_state_enum.EXPR_CLASS); }
|
---|
1590 | bool IS_SPCARG(int c, bool space_seen) { return (IS_ARG() && space_seen && !ISSPACE(c)); }
|
---|
1591 | bool IS_LABEL_POSSIBLE(bool cmd_state) { return ((this.lstate == mrb_lex_state_enum.EXPR_BEG && !cmd_state) || IS_ARG()); }
|
---|
1592 | bool IS_LABEL_SUFFIX(int n) { return (peek_n(':', (n)) && !peek_n(':', (n) + 1)); }
|
---|
1593 |
|
---|
1594 | static int scan_oct(int[] start, int len, ref int retlen)
|
---|
1595 | {
|
---|
1596 | int s = 0;
|
---|
1597 | int retval = 0;
|
---|
1598 |
|
---|
1599 | /* mrb_assert(len <= 3) */
|
---|
1600 | while (len-- != 0 && start[s] >= '0' && start[s] <= '7') {
|
---|
1601 | retval <<= 3;
|
---|
1602 | retval |= start[s++] - '0';
|
---|
1603 | }
|
---|
1604 | retlen = s;
|
---|
1605 |
|
---|
1606 | return retval;
|
---|
1607 | }
|
---|
1608 |
|
---|
1609 | static int scan_hex(int[] start, int len, ref int retlen)
|
---|
1610 | {
|
---|
1611 | Uint8Array hexdigit = MrbParser.UTF8StringToArray("0123456789abcdef0123456789ABCDEF");
|
---|
1612 | int s = 0;
|
---|
1613 | int retval = 0;
|
---|
1614 | int tmp;
|
---|
1615 |
|
---|
1616 | /* mrb_assert(len <= 8) */
|
---|
1617 | while (len-- != 0 && start[s] != 0 && (tmp = strchr(hexdigit, 0, start[s])) >= 0) {
|
---|
1618 | retval <<= 4;
|
---|
1619 | retval |= tmp & 15;
|
---|
1620 | s++;
|
---|
1621 | }
|
---|
1622 | retlen = s;
|
---|
1623 |
|
---|
1624 | return retval;
|
---|
1625 | }
|
---|
1626 |
|
---|
1627 | int read_escape_unicode(int limit)
|
---|
1628 | {
|
---|
1629 | for (;;) {
|
---|
1630 | int c;
|
---|
1631 | int[] buf = new int[9];
|
---|
1632 | int i;
|
---|
1633 |
|
---|
1634 | /* Look for opening brace */
|
---|
1635 | i = 0;
|
---|
1636 | buf[0] = nextc();
|
---|
1637 | if (buf[0] < 0) break;
|
---|
1638 | if (ISXDIGIT(buf[0])) {
|
---|
1639 | /* \uxxxx form */
|
---|
1640 | for (i = 1; i < limit; i++) {
|
---|
1641 | buf[i] = nextc();
|
---|
1642 | if (buf[i] < 0) break;
|
---|
1643 | if (!ISXDIGIT(buf[i])) {
|
---|
1644 | pushback(buf[i]);
|
---|
1645 | break;
|
---|
1646 | }
|
---|
1647 | }
|
---|
1648 | }
|
---|
1649 | else {
|
---|
1650 | pushback(buf[0]);
|
---|
1651 | }
|
---|
1652 | c = scan_hex(buf, i, ref i);
|
---|
1653 | if (i == 0) {
|
---|
1654 | break;
|
---|
1655 | }
|
---|
1656 | if (c < 0 || c > 0x10FFFF || (c & 0xFFFFF800) == 0xD800) {
|
---|
1657 | yyError("Invalid Unicode code point");
|
---|
1658 | return -1;
|
---|
1659 | }
|
---|
1660 | return c;
|
---|
1661 | }
|
---|
1662 |
|
---|
1663 | yyError("Invalid escape character syntax");
|
---|
1664 | return -1;
|
---|
1665 | }
|
---|
1666 |
|
---|
1667 | /* Return negative to indicate Unicode code point */
|
---|
1668 | int read_escape()
|
---|
1669 | {
|
---|
1670 | int c;
|
---|
1671 |
|
---|
1672 | switch (c = nextc()) {
|
---|
1673 | case '\\':/* Backslash */
|
---|
1674 | return c;
|
---|
1675 |
|
---|
1676 | case 'n':/* newline */
|
---|
1677 | return '\n';
|
---|
1678 |
|
---|
1679 | case 't':/* horizontal tab */
|
---|
1680 | return '\t';
|
---|
1681 |
|
---|
1682 | case 'r':/* carriage-return */
|
---|
1683 | return '\r';
|
---|
1684 |
|
---|
1685 | case 'f':/* form-feed */
|
---|
1686 | return '\f';
|
---|
1687 |
|
---|
1688 | case 'v':/* vertical tab */
|
---|
1689 | return '\v';
|
---|
1690 |
|
---|
1691 | case 'a':/* alarm(bell) */
|
---|
1692 | return '\x07';
|
---|
1693 |
|
---|
1694 | case 'e':/* escape */
|
---|
1695 | return 033;
|
---|
1696 | case '0':
|
---|
1697 | case '1':
|
---|
1698 | case '2':
|
---|
1699 | case '3': /* octal constant */
|
---|
1700 | case '4':
|
---|
1701 | case '5':
|
---|
1702 | case '6':
|
---|
1703 | case '7': {
|
---|
1704 | int[] buf = new int[3];
|
---|
1705 | int i;
|
---|
1706 |
|
---|
1707 | bool error = false;
|
---|
1708 | buf[0] = c;
|
---|
1709 | for (i = 1; i < 3; i++) {
|
---|
1710 | buf[i] = nextc();
|
---|
1711 | if (buf[i] < 0) {
|
---|
1712 | error = true;
|
---|
1713 | break;
|
---|
1714 | }
|
---|
1715 | if (buf[i] < '0' || '7' < buf[i]) {
|
---|
1716 | pushback(buf[i]);
|
---|
1717 | break;
|
---|
1718 | }
|
---|
1719 | }
|
---|
1720 | if (error)
|
---|
1721 | break;
|
---|
1722 | c = scan_oct(buf, i, ref i);
|
---|
1723 | }
|
---|
1724 | return c;
|
---|
1725 |
|
---|
1726 | case 'x': /* hex constant */
|
---|
1727 | {
|
---|
1728 | int[] buf = new int[2];
|
---|
1729 | int i;
|
---|
1730 |
|
---|
1731 | bool error = false;
|
---|
1732 | for (i = 0; i < 2; i++) {
|
---|
1733 | buf[i] = nextc();
|
---|
1734 | if (buf[i] < 0) {
|
---|
1735 | error = true;
|
---|
1736 | break;
|
---|
1737 | }
|
---|
1738 | if (!ISXDIGIT(buf[i])) {
|
---|
1739 | pushback(buf[i]);
|
---|
1740 | break;
|
---|
1741 | }
|
---|
1742 | }
|
---|
1743 | if (error)
|
---|
1744 | break;
|
---|
1745 | c = scan_hex(buf, i, ref i);
|
---|
1746 | if (i == 0) {
|
---|
1747 | yyError("Invalid escape character syntax");
|
---|
1748 | return 0;
|
---|
1749 | }
|
---|
1750 | }
|
---|
1751 | return c;
|
---|
1752 |
|
---|
1753 | case 'u': /* Unicode */
|
---|
1754 | if (peek('{')) {
|
---|
1755 | /* \u{xxxxxxxx} form */
|
---|
1756 | nextc();
|
---|
1757 | c = read_escape_unicode(8);
|
---|
1758 | if (c < 0) return 0;
|
---|
1759 | if (nextc() != '}') break;
|
---|
1760 | }
|
---|
1761 | else {
|
---|
1762 | c = read_escape_unicode(4);
|
---|
1763 | if (c < 0) return 0;
|
---|
1764 | }
|
---|
1765 | return -c;
|
---|
1766 |
|
---|
1767 | case 'b':/* backspace */
|
---|
1768 | return '\b';
|
---|
1769 |
|
---|
1770 | case 's':/* space */
|
---|
1771 | return ' ';
|
---|
1772 |
|
---|
1773 | case 'M':
|
---|
1774 | if ((c = nextc()) != '-') {
|
---|
1775 | yyError("Invalid escape character syntax");
|
---|
1776 | pushback(c);
|
---|
1777 | return '\0';
|
---|
1778 | }
|
---|
1779 | if ((c = nextc()) == '\\') {
|
---|
1780 | return read_escape() | 0x80;
|
---|
1781 | }
|
---|
1782 | else if (c < 0) break;
|
---|
1783 | else {
|
---|
1784 | return ((c & 0xff) | 0x80);
|
---|
1785 | }
|
---|
1786 |
|
---|
1787 | case 'C':
|
---|
1788 | case 'c':
|
---|
1789 | if (c == 'C') {
|
---|
1790 | if ((c = nextc()) != '-') {
|
---|
1791 | yyError("Invalid escape character syntax");
|
---|
1792 | pushback(c);
|
---|
1793 | return '\0';
|
---|
1794 | }
|
---|
1795 | }
|
---|
1796 | if ((c = nextc()) == '\\') {
|
---|
1797 | c = read_escape();
|
---|
1798 | }
|
---|
1799 | else if (c == '?')
|
---|
1800 | return 0177;
|
---|
1801 | else if (c < 0) break;
|
---|
1802 | return c & 0x9f;
|
---|
1803 |
|
---|
1804 | case -1:
|
---|
1805 | case -2: /* end of a file */
|
---|
1806 | break;
|
---|
1807 |
|
---|
1808 | default:
|
---|
1809 | return c;
|
---|
1810 | }
|
---|
1811 |
|
---|
1812 | yyError("Invalid escape character syntax");
|
---|
1813 | return '\0';
|
---|
1814 | }
|
---|
1815 |
|
---|
1816 | MrbTokens parse_string()
|
---|
1817 | {
|
---|
1818 | int c;
|
---|
1819 | var type = (mrb_string_type)this.lex_strterm.car;
|
---|
1820 | var nest_level = (int)((node)this.lex_strterm.cdr).car;
|
---|
1821 | var beg = (int)((node)((node)this.lex_strterm.cdr).cdr).car;
|
---|
1822 | var end = (int)((node)((node)this.lex_strterm.cdr).cdr).cdr;
|
---|
1823 | var hinf = (type & mrb_string_type.STR_FUNC_HEREDOC) != 0 ? parsing_heredoc_inf() : null;
|
---|
1824 | var cmd_state = this.cmd_start;
|
---|
1825 |
|
---|
1826 | if (beg == 0) beg = -3; /* should never happen */
|
---|
1827 | if (end == 0) end = -3;
|
---|
1828 | newtok();
|
---|
1829 | while ((c = nextc()) != end || nest_level != 0) {
|
---|
1830 | if (hinf != null && (c == '\n' || c < 0)) {
|
---|
1831 | bool line_head;
|
---|
1832 | tokadd('\n');
|
---|
1833 | tokfix();
|
---|
1834 | this.lineno++;
|
---|
1835 | this.column = 0;
|
---|
1836 | line_head = hinf.line_head;
|
---|
1837 | hinf.line_head = true;
|
---|
1838 | if (line_head) {
|
---|
1839 | /* check whether end of heredoc */
|
---|
1840 | Uint8Array s = tok();
|
---|
1841 | int p = 0;
|
---|
1842 | int len = toklen();
|
---|
1843 | if (hinf.allow_indent) {
|
---|
1844 | while (ISSPACE(s[p]) && len > 0) {
|
---|
1845 | ++p;
|
---|
1846 | --len;
|
---|
1847 | }
|
---|
1848 | }
|
---|
1849 | if ((len - 1 == hinf.term_len) && (strncmp(s, p, hinf.term, 0, len - 1) == 0)) {
|
---|
1850 | if (c < 0) {
|
---|
1851 | parsing_heredoc = null;
|
---|
1852 | }
|
---|
1853 | else {
|
---|
1854 | return MrbTokens.tHEREDOC_END;
|
---|
1855 | }
|
---|
1856 | }
|
---|
1857 | }
|
---|
1858 | if (c < 0) {
|
---|
1859 | yyError("can't find heredoc delimiter \"{0}\" anywhere before EOF", MrbParser.UTF8ArrayToString(hinf.term, 0));
|
---|
1860 | return 0;
|
---|
1861 | }
|
---|
1862 | yylval.nd = new_str(tok(), toklen());
|
---|
1863 | return MrbTokens.tHD_STRING_MID;
|
---|
1864 | }
|
---|
1865 | if (c < 0) {
|
---|
1866 | yyError("unterminated Uint8Array meets end of file");
|
---|
1867 | return 0;
|
---|
1868 | }
|
---|
1869 | else if (c == beg) {
|
---|
1870 | nest_level++;
|
---|
1871 | ((node)this.lex_strterm.cdr).car = nest_level;
|
---|
1872 | }
|
---|
1873 | else if (c == end) {
|
---|
1874 | nest_level--;
|
---|
1875 | ((node)this.lex_strterm.cdr).car = nest_level;
|
---|
1876 | }
|
---|
1877 | else if (c == '\\') {
|
---|
1878 | c = nextc();
|
---|
1879 | if ((type & mrb_string_type.STR_FUNC_EXPAND) != 0) {
|
---|
1880 | if (c == end || c == beg) {
|
---|
1881 | tokadd(c);
|
---|
1882 | }
|
---|
1883 | else if (c == '\n') {
|
---|
1884 | this.lineno++;
|
---|
1885 | this.column = 0;
|
---|
1886 | if ((type & mrb_string_type.STR_FUNC_ARRAY) != 0) {
|
---|
1887 | tokadd('\n');
|
---|
1888 | }
|
---|
1889 | }
|
---|
1890 | else if ((type & mrb_string_type.STR_FUNC_REGEXP) != 0) {
|
---|
1891 | tokadd('\\');
|
---|
1892 | tokadd(c);
|
---|
1893 | }
|
---|
1894 | else if (c == 'u' && peek('{')) {
|
---|
1895 | /* \u{xxxx xxxx xxxx} form */
|
---|
1896 | nextc();
|
---|
1897 | while (true) {
|
---|
1898 | do c = nextc(); while (ISSPACE(c));
|
---|
1899 | if (c == '}') break;
|
---|
1900 | pushback(c);
|
---|
1901 | c = read_escape_unicode(8);
|
---|
1902 | if (c < 0) break;
|
---|
1903 | tokadd(-c);
|
---|
1904 | }
|
---|
1905 | if (hinf != null)
|
---|
1906 | hinf.line_head = false;
|
---|
1907 | }
|
---|
1908 | else {
|
---|
1909 | pushback(c);
|
---|
1910 | tokadd(read_escape());
|
---|
1911 | if (hinf != null)
|
---|
1912 | hinf.line_head = false;
|
---|
1913 | }
|
---|
1914 | }
|
---|
1915 | else {
|
---|
1916 | if (c != beg && c != end) {
|
---|
1917 | if (c == '\n') {
|
---|
1918 | this.lineno++;
|
---|
1919 | this.column = 0;
|
---|
1920 | }
|
---|
1921 | if (!(c == '\\' || ((type & mrb_string_type.STR_FUNC_ARRAY) != 0 && ISSPACE(c)))) {
|
---|
1922 | tokadd('\\');
|
---|
1923 | }
|
---|
1924 | }
|
---|
1925 | tokadd(c);
|
---|
1926 | }
|
---|
1927 | continue;
|
---|
1928 | }
|
---|
1929 | else if ((c == '#') && (type & mrb_string_type.STR_FUNC_EXPAND) != 0) {
|
---|
1930 | c = nextc();
|
---|
1931 | if (c == '{') {
|
---|
1932 | tokfix();
|
---|
1933 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
1934 | this.cmd_start = true;
|
---|
1935 | yylval.nd = new_str(tok(), toklen());
|
---|
1936 | if (hinf != null) {
|
---|
1937 | hinf.line_head = false;
|
---|
1938 | return MrbTokens.tHD_STRING_PART;
|
---|
1939 | }
|
---|
1940 | return MrbTokens.tSTRING_PART;
|
---|
1941 | }
|
---|
1942 | tokadd('#');
|
---|
1943 | pushback(c);
|
---|
1944 | continue;
|
---|
1945 | }
|
---|
1946 | if ((type & mrb_string_type.STR_FUNC_ARRAY) != 0 && ISSPACE(c)) {
|
---|
1947 | if (toklen() == 0) {
|
---|
1948 | do {
|
---|
1949 | if (c == '\n') {
|
---|
1950 | this.lineno++;
|
---|
1951 | this.column = 0;
|
---|
1952 | heredoc_treat_nextline();
|
---|
1953 | if (this.parsing_heredoc != null) {
|
---|
1954 | return MrbTokens.tHD_LITERAL_DELIM;
|
---|
1955 | }
|
---|
1956 | }
|
---|
1957 | c = nextc();
|
---|
1958 | } while (ISSPACE(c));
|
---|
1959 | pushback(c);
|
---|
1960 | return MrbTokens.tLITERAL_DELIM;
|
---|
1961 | }
|
---|
1962 | else {
|
---|
1963 | pushback(c);
|
---|
1964 | tokfix();
|
---|
1965 | yylval.nd = new_str(tok(), toklen());
|
---|
1966 | return MrbTokens.tSTRING_MID;
|
---|
1967 | }
|
---|
1968 | }
|
---|
1969 | tokadd(c);
|
---|
1970 | }
|
---|
1971 |
|
---|
1972 | tokfix();
|
---|
1973 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
1974 | end_strterm();
|
---|
1975 |
|
---|
1976 | if ((type & mrb_string_type.STR_FUNC_XQUOTE) != 0) {
|
---|
1977 | yylval.nd = new_xstr(tok(), toklen());
|
---|
1978 | return MrbTokens.tXSTRING;
|
---|
1979 | }
|
---|
1980 |
|
---|
1981 | if ((type & mrb_string_type.STR_FUNC_REGEXP) != 0) {
|
---|
1982 | int f = 0;
|
---|
1983 | int re_opt;
|
---|
1984 | Uint8Array s = strndup(tok(), 0, toklen());
|
---|
1985 | Uint8Array flags = new Uint8Array(3);
|
---|
1986 | int flag = 0;
|
---|
1987 | var enc = (byte)'\0';
|
---|
1988 | Uint8Array encp;
|
---|
1989 | Uint8Array dup;
|
---|
1990 |
|
---|
1991 | newtok();
|
---|
1992 | while ((re_opt = nextc()) >= 0 && ISALPHA(re_opt)) {
|
---|
1993 | switch (re_opt) {
|
---|
1994 | case 'i': f |= 1; break;
|
---|
1995 | case 'x': f |= 2; break;
|
---|
1996 | case 'm': f |= 4; break;
|
---|
1997 | case 'u': f |= 16; break;
|
---|
1998 | case 'n': f |= 32; break;
|
---|
1999 | default: tokadd(re_opt); break;
|
---|
2000 | }
|
---|
2001 | }
|
---|
2002 | pushback(re_opt);
|
---|
2003 | if (toklen() != 0) {
|
---|
2004 | tokfix();
|
---|
2005 | yyError("unknown regexp option%s - %s", toklen() > 1 ? "s" : "", MrbParser.UTF8ArrayToString(tok().SubArray(0, toklen() + 1), 0));
|
---|
2006 | }
|
---|
2007 | if (f != 0) {
|
---|
2008 | if ((f & 1) != 0) flags[flag++] = (byte)'i';
|
---|
2009 | if ((f & 2) != 0) flags[flag++] = (byte)'x';
|
---|
2010 | if ((f & 4) != 0) flags[flag++] = (byte)'m';
|
---|
2011 | if ((f & 16) != 0) enc = (byte)'u';
|
---|
2012 | if ((f & 32) != 0) enc = (byte)'n';
|
---|
2013 | }
|
---|
2014 | if (flag > 0) {
|
---|
2015 | dup = strndup(flags, 0, flag);
|
---|
2016 | }
|
---|
2017 | else {
|
---|
2018 | dup = null;
|
---|
2019 | }
|
---|
2020 | if (enc != 0) {
|
---|
2021 | encp = strndup(new Uint8Array(new byte[] { enc }), 0, 1);
|
---|
2022 | }
|
---|
2023 | else {
|
---|
2024 | encp = null;
|
---|
2025 | }
|
---|
2026 | yylval.nd = new_regx(s, dup, encp);
|
---|
2027 |
|
---|
2028 | return MrbTokens.tREGEXP;
|
---|
2029 | }
|
---|
2030 | yylval.nd = new_str(tok(), toklen());
|
---|
2031 | if (IS_LABEL_POSSIBLE(cmd_state)) {
|
---|
2032 | if (IS_LABEL_SUFFIX(0)) {
|
---|
2033 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2034 | nextc();
|
---|
2035 | return MrbTokens.tLABEL_END;
|
---|
2036 | }
|
---|
2037 | }
|
---|
2038 | return MrbTokens.tSTRING;
|
---|
2039 | }
|
---|
2040 |
|
---|
2041 | MrbTokens heredoc_identifier()
|
---|
2042 | {
|
---|
2043 | int c;
|
---|
2044 | mrb_string_type type = mrb_string_type.str_heredoc;
|
---|
2045 | bool indent = false;
|
---|
2046 | bool quote = false;
|
---|
2047 | heredoc_node newnode;
|
---|
2048 | parser_heredoc_info info;
|
---|
2049 |
|
---|
2050 | c = nextc();
|
---|
2051 | if (ISSPACE(c) || c == '=') {
|
---|
2052 | pushback(c);
|
---|
2053 | return 0;
|
---|
2054 | }
|
---|
2055 | if (c == '-') {
|
---|
2056 | indent = true;
|
---|
2057 | c = nextc();
|
---|
2058 | }
|
---|
2059 | if (c == '\'' || c == '"') {
|
---|
2060 | int term = c;
|
---|
2061 | if (c == '\'')
|
---|
2062 | quote = true;
|
---|
2063 | newtok();
|
---|
2064 | while ((c = nextc()) >= 0 && c != term) {
|
---|
2065 | if (c == '\n') {
|
---|
2066 | c = -1;
|
---|
2067 | break;
|
---|
2068 | }
|
---|
2069 | tokadd(c);
|
---|
2070 | }
|
---|
2071 | if (c < 0) {
|
---|
2072 | yyError("unterminated here document identifier");
|
---|
2073 | return 0;
|
---|
2074 | }
|
---|
2075 | }
|
---|
2076 | else {
|
---|
2077 | if (c < 0) {
|
---|
2078 | return 0; /* missing here document identifier */
|
---|
2079 | }
|
---|
2080 | if (!identchar(c)) {
|
---|
2081 | pushback(c);
|
---|
2082 | if (indent) pushback('-');
|
---|
2083 | return 0;
|
---|
2084 | }
|
---|
2085 | newtok();
|
---|
2086 | do {
|
---|
2087 | tokadd(c);
|
---|
2088 | } while ((c = nextc()) >= 0 && identchar(c));
|
---|
2089 | pushback(c);
|
---|
2090 | }
|
---|
2091 | tokfix();
|
---|
2092 | newnode = new_heredoc();
|
---|
2093 | info = newnode.info;
|
---|
2094 | info.term = strndup(tok(), 0, toklen());
|
---|
2095 | info.term_len = toklen();
|
---|
2096 | if (!quote)
|
---|
2097 | type |= mrb_string_type.STR_FUNC_EXPAND;
|
---|
2098 | info.type = type;
|
---|
2099 | info.allow_indent = indent;
|
---|
2100 | info.line_head = true;
|
---|
2101 | info.claer_doc();
|
---|
2102 | this.heredocs_from_nextline = push(this.heredocs_from_nextline, newnode);
|
---|
2103 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
2104 |
|
---|
2105 | yylval.nd = newnode;
|
---|
2106 | return MrbTokens.tHEREDOC_BEG;
|
---|
2107 | }
|
---|
2108 |
|
---|
2109 | MrbTokens start_num(int c)
|
---|
2110 | {
|
---|
2111 | int nondigit;
|
---|
2112 |
|
---|
2113 | nondigit = 0;
|
---|
2114 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
2115 | newtok();
|
---|
2116 | if (c == '-' || c == '+') {
|
---|
2117 | tokadd(c);
|
---|
2118 | c = nextc();
|
---|
2119 | }
|
---|
2120 | if (c == '0') {
|
---|
2121 | int start = toklen();
|
---|
2122 | c = nextc();
|
---|
2123 | if (c == 'x' || c == 'X') {
|
---|
2124 | /* hexadecimal */
|
---|
2125 | c = nextc();
|
---|
2126 | if (c >= 0 && ISXDIGIT(c)) {
|
---|
2127 | do {
|
---|
2128 | if (c == '_') {
|
---|
2129 | if (nondigit != 0) break;
|
---|
2130 | nondigit = c;
|
---|
2131 | continue;
|
---|
2132 | }
|
---|
2133 | if (!ISXDIGIT(c)) break;
|
---|
2134 | nondigit = 0;
|
---|
2135 | tokadd(tolower(c));
|
---|
2136 | } while ((c = nextc()) >= 0);
|
---|
2137 | }
|
---|
2138 | pushback(c);
|
---|
2139 | tokfix();
|
---|
2140 | if (toklen() == start) {
|
---|
2141 | yyError("numeric literal without digits");
|
---|
2142 | return 0;
|
---|
2143 | }
|
---|
2144 | else if (nondigit != 0) return trailing_uc(nondigit, 0);
|
---|
2145 | yylval.nd = new_int(tok(), 16);
|
---|
2146 | return MrbTokens.tINTEGER;
|
---|
2147 | }
|
---|
2148 | if (c == 'b' || c == 'B') {
|
---|
2149 | /* binary */
|
---|
2150 | c = nextc();
|
---|
2151 | if (c == '0' || c == '1') {
|
---|
2152 | do {
|
---|
2153 | if (c == '_') {
|
---|
2154 | if (nondigit != 0) break;
|
---|
2155 | nondigit = c;
|
---|
2156 | continue;
|
---|
2157 | }
|
---|
2158 | if (c != '0' && c != '1') break;
|
---|
2159 | nondigit = 0;
|
---|
2160 | tokadd(c);
|
---|
2161 | } while ((c = nextc()) >= 0);
|
---|
2162 | }
|
---|
2163 | pushback(c);
|
---|
2164 | tokfix();
|
---|
2165 | if (toklen() == start) {
|
---|
2166 | yyError("numeric literal without digits");
|
---|
2167 | return 0;
|
---|
2168 | }
|
---|
2169 | else if (nondigit != 0) return trailing_uc(nondigit, 0);
|
---|
2170 | yylval.nd = new_int(tok(), 2);
|
---|
2171 | return MrbTokens.tINTEGER;
|
---|
2172 | }
|
---|
2173 | if (c == 'd' || c == 'D') {
|
---|
2174 | /* decimal */
|
---|
2175 | c = nextc();
|
---|
2176 | if (c >= 0 && ISDIGIT(c)) {
|
---|
2177 | do {
|
---|
2178 | if (c == '_') {
|
---|
2179 | if (nondigit != 0) break;
|
---|
2180 | nondigit = c;
|
---|
2181 | continue;
|
---|
2182 | }
|
---|
2183 | if (!ISDIGIT(c)) break;
|
---|
2184 | nondigit = 0;
|
---|
2185 | tokadd(c);
|
---|
2186 | } while ((c = nextc()) >= 0);
|
---|
2187 | }
|
---|
2188 | pushback(c);
|
---|
2189 | tokfix();
|
---|
2190 | if (toklen() == start) {
|
---|
2191 | yyError("numeric literal without digits");
|
---|
2192 | return 0;
|
---|
2193 | }
|
---|
2194 | else if (nondigit != 0) return trailing_uc(nondigit, 0);
|
---|
2195 | yylval.nd = new_int(tok(), 10);
|
---|
2196 | return MrbTokens.tINTEGER;
|
---|
2197 | }
|
---|
2198 | if (c == 'o' || c == 'O') {
|
---|
2199 | /* prefixed octal */
|
---|
2200 | c = nextc();
|
---|
2201 | if (c < 0 || c == '_' || !ISDIGIT(c)) {
|
---|
2202 | yyError("numeric literal without digits");
|
---|
2203 | return 0;
|
---|
2204 | }
|
---|
2205 | }
|
---|
2206 | if ((c == '_')/* 0_0 */ ||
|
---|
2207 | (c >= '0' && c <= '7')/* octal */) {
|
---|
2208 | do {
|
---|
2209 | if (c == '_') {
|
---|
2210 | if (nondigit != 0) break;
|
---|
2211 | nondigit = c;
|
---|
2212 | continue;
|
---|
2213 | }
|
---|
2214 | if (c < '0' || c > '9') break;
|
---|
2215 | if (c > '7') {
|
---|
2216 | yyError("Invalid octal digit");
|
---|
2217 | return invalid_octal(c, nondigit);
|
---|
2218 | }
|
---|
2219 | nondigit = 0;
|
---|
2220 | tokadd(c);
|
---|
2221 | } while ((c = nextc()) >= 0);
|
---|
2222 |
|
---|
2223 | if (toklen() > start) {
|
---|
2224 | pushback(c);
|
---|
2225 | tokfix();
|
---|
2226 | if (nondigit != 0) return trailing_uc(nondigit, 0);
|
---|
2227 | yylval.nd = new_int(tok(), 8);
|
---|
2228 | return MrbTokens.tINTEGER;
|
---|
2229 | }
|
---|
2230 | if (nondigit != 0) {
|
---|
2231 | pushback(c);
|
---|
2232 | return trailing_uc(nondigit, 0);
|
---|
2233 | }
|
---|
2234 | }
|
---|
2235 |
|
---|
2236 | if (c > '7' && c <= '9') {
|
---|
2237 | yyError("Invalid octal digit");
|
---|
2238 | return invalid_octal(c, nondigit);
|
---|
2239 | }
|
---|
2240 | else if (c == '.' || c == 'e' || c == 'E') {
|
---|
2241 | tokadd('0');
|
---|
2242 | return invalid_octal(c, nondigit);
|
---|
2243 | }
|
---|
2244 | else {
|
---|
2245 | pushback(c);
|
---|
2246 | yylval.nd = new_int("0", 10);
|
---|
2247 | return MrbTokens.tINTEGER;
|
---|
2248 | }
|
---|
2249 | }
|
---|
2250 |
|
---|
2251 | return invalid_octal(c, nondigit);
|
---|
2252 | }
|
---|
2253 |
|
---|
2254 | MrbTokens invalid_octal(int c, int nondigit)
|
---|
2255 | {
|
---|
2256 | int is_float, seen_point, seen_e;
|
---|
2257 |
|
---|
2258 | is_float = seen_point = seen_e = 0;
|
---|
2259 |
|
---|
2260 | for (;;) {
|
---|
2261 | switch (c) {
|
---|
2262 | case '0':
|
---|
2263 | case '1':
|
---|
2264 | case '2':
|
---|
2265 | case '3':
|
---|
2266 | case '4':
|
---|
2267 | case '5':
|
---|
2268 | case '6':
|
---|
2269 | case '7':
|
---|
2270 | case '8':
|
---|
2271 | case '9':
|
---|
2272 | nondigit = 0;
|
---|
2273 | tokadd(c);
|
---|
2274 | break;
|
---|
2275 |
|
---|
2276 | case '.':
|
---|
2277 | if (nondigit != 0) return trailing_uc(nondigit, is_float);
|
---|
2278 | if (seen_point != 0 || seen_e != 0) {
|
---|
2279 | pushback(c);
|
---|
2280 | return trailing_uc(nondigit, is_float);
|
---|
2281 | }
|
---|
2282 | else {
|
---|
2283 | int c0 = nextc();
|
---|
2284 | if (c0 < 0 || !ISDIGIT(c0)) {
|
---|
2285 | pushback(c0);
|
---|
2286 | pushback(c);
|
---|
2287 | return trailing_uc(nondigit, is_float);
|
---|
2288 | }
|
---|
2289 | c = c0;
|
---|
2290 | }
|
---|
2291 | tokadd('.');
|
---|
2292 | tokadd(c);
|
---|
2293 | is_float++;
|
---|
2294 | seen_point++;
|
---|
2295 | nondigit = 0;
|
---|
2296 | break;
|
---|
2297 |
|
---|
2298 | case 'e':
|
---|
2299 | case 'E':
|
---|
2300 | if (nondigit != 0) {
|
---|
2301 | pushback(c);
|
---|
2302 | c = nondigit;
|
---|
2303 | pushback(c);
|
---|
2304 | return trailing_uc(nondigit, is_float);
|
---|
2305 | }
|
---|
2306 | if (seen_e != 0) {
|
---|
2307 | pushback(c);
|
---|
2308 | return trailing_uc(nondigit, is_float);
|
---|
2309 | }
|
---|
2310 | tokadd(c);
|
---|
2311 | seen_e++;
|
---|
2312 | is_float++;
|
---|
2313 | nondigit = c;
|
---|
2314 | c = nextc();
|
---|
2315 | if (c != '-' && c != '+') continue;
|
---|
2316 | tokadd(c);
|
---|
2317 | nondigit = c;
|
---|
2318 | break;
|
---|
2319 |
|
---|
2320 | case '_': /* '_' in number just ignored */
|
---|
2321 | if (nondigit != 0) {
|
---|
2322 | pushback(c);
|
---|
2323 | return trailing_uc(nondigit, is_float);
|
---|
2324 | }
|
---|
2325 | nondigit = c;
|
---|
2326 | break;
|
---|
2327 |
|
---|
2328 | default: {
|
---|
2329 | pushback(c);
|
---|
2330 | return trailing_uc(nondigit, is_float);
|
---|
2331 | }
|
---|
2332 | }
|
---|
2333 | c = nextc();
|
---|
2334 | }
|
---|
2335 | }
|
---|
2336 |
|
---|
2337 | MrbTokens trailing_uc(int nondigit, int is_float)
|
---|
2338 | {
|
---|
2339 | if (nondigit != 0) {
|
---|
2340 | yyError("trailing '{0}' in number", nondigit.ToString());
|
---|
2341 | }
|
---|
2342 |
|
---|
2343 | tokfix();
|
---|
2344 | if (is_float != 0) {
|
---|
2345 | double d;
|
---|
2346 | Uint8Array endp;
|
---|
2347 |
|
---|
2348 | errno = 0;
|
---|
2349 | d = mrb_float_read(tok(), 0, out endp);
|
---|
2350 | if (d == 0 && endp == tok()) {
|
---|
2351 | yyWarning("corrupted float value {0}", MrbParser.UTF8ArrayToString(tok().SubArray(0, toklen() + 1), 0));
|
---|
2352 | }
|
---|
2353 | else if (errno == ERANGE) {
|
---|
2354 | yyWarning("float {0} out of range", MrbParser.UTF8ArrayToString(tok().SubArray(0, toklen() + 1), 0));
|
---|
2355 | errno = 0;
|
---|
2356 | }
|
---|
2357 | yylval.nd = new_float(tok());
|
---|
2358 | return MrbTokens.tFLOAT;
|
---|
2359 | }
|
---|
2360 | yylval.nd = new_int(tok(), 10);
|
---|
2361 | return MrbTokens.tINTEGER;
|
---|
2362 | }
|
---|
2363 |
|
---|
2364 | bool arg_ambiguous()
|
---|
2365 | {
|
---|
2366 | yyWarning("ambiguous first argument; put parentheses or even spaces");
|
---|
2367 | return true;
|
---|
2368 | }
|
---|
2369 |
|
---|
2370 | MrbTokens quotation(int c)
|
---|
2371 | {
|
---|
2372 | int term;
|
---|
2373 | int paren;
|
---|
2374 |
|
---|
2375 | if (c < 0 || !ISALNUM(c)) {
|
---|
2376 | term = c;
|
---|
2377 | c = 'Q';
|
---|
2378 | }
|
---|
2379 | else {
|
---|
2380 | term = nextc();
|
---|
2381 | if (isalnum(term)) {
|
---|
2382 | yyError("unknown type of %string");
|
---|
2383 | return 0;
|
---|
2384 | }
|
---|
2385 | }
|
---|
2386 | if (c < 0 || term < 0) {
|
---|
2387 | yyError("unterminated quoted string meets end of file");
|
---|
2388 | return 0;
|
---|
2389 | }
|
---|
2390 | paren = term;
|
---|
2391 | if (term == '(') term = ')';
|
---|
2392 | else if (term == '[') term = ']';
|
---|
2393 | else if (term == '{') term = '}';
|
---|
2394 | else if (term == '<') term = '>';
|
---|
2395 | else paren = 0;
|
---|
2396 |
|
---|
2397 | switch (c) {
|
---|
2398 | case 'Q':
|
---|
2399 | this.lex_strterm = new_strterm(mrb_string_type.str_dquote, term, paren);
|
---|
2400 | return MrbTokens.tSTRING_BEG;
|
---|
2401 |
|
---|
2402 | case 'q':
|
---|
2403 | this.lex_strterm = new_strterm(mrb_string_type.str_squote, term, paren);
|
---|
2404 | return parse_string();
|
---|
2405 |
|
---|
2406 | case 'W':
|
---|
2407 | this.lex_strterm = new_strterm(mrb_string_type.str_dword, term, paren);
|
---|
2408 | return MrbTokens.tWORDS_BEG;
|
---|
2409 |
|
---|
2410 | case 'w':
|
---|
2411 | this.lex_strterm = new_strterm(mrb_string_type.str_sword, term, paren);
|
---|
2412 | return MrbTokens.tWORDS_BEG;
|
---|
2413 |
|
---|
2414 | case 'x':
|
---|
2415 | this.lex_strterm = new_strterm(mrb_string_type.str_xquote, term, paren);
|
---|
2416 | return MrbTokens.tXSTRING_BEG;
|
---|
2417 |
|
---|
2418 | case 'r':
|
---|
2419 | this.lex_strterm = new_strterm(mrb_string_type.str_regexp, term, paren);
|
---|
2420 | return MrbTokens.tREGEXP_BEG;
|
---|
2421 |
|
---|
2422 | case 's':
|
---|
2423 | this.lex_strterm = new_strterm(mrb_string_type.str_ssym, term, paren);
|
---|
2424 | return MrbTokens.tSYMBEG;
|
---|
2425 |
|
---|
2426 | case 'I':
|
---|
2427 | this.lex_strterm = new_strterm(mrb_string_type.str_dsymbols, term, paren);
|
---|
2428 | return MrbTokens.tSYMBOLS_BEG;
|
---|
2429 |
|
---|
2430 | case 'i':
|
---|
2431 | this.lex_strterm = new_strterm(mrb_string_type.str_ssymbols, term, paren);
|
---|
2432 | return MrbTokens.tSYMBOLS_BEG;
|
---|
2433 |
|
---|
2434 | default:
|
---|
2435 | yyError("unknown type of %string");
|
---|
2436 | return 0;
|
---|
2437 | }
|
---|
2438 | }
|
---|
2439 |
|
---|
2440 | static readonly Dictionary<string, kwtable> wordlist = new Dictionary<string, kwtable>()
|
---|
2441 | {
|
---|
2442 | {"break", new kwtable("break", MrbTokens.keyword_break, MrbTokens.keyword_break, mrb_lex_state_enum.EXPR_MID) },
|
---|
2443 | {"else", new kwtable("else", MrbTokens.keyword_else, MrbTokens.keyword_else, mrb_lex_state_enum.EXPR_BEG) },
|
---|
2444 | {"nil", new kwtable("nil", MrbTokens.keyword_nil, MrbTokens.keyword_nil, mrb_lex_state_enum.EXPR_END) },
|
---|
2445 | {"ensure", new kwtable("ensure", MrbTokens.keyword_ensure, MrbTokens.keyword_ensure, mrb_lex_state_enum.EXPR_BEG) },
|
---|
2446 | {"end", new kwtable("end", MrbTokens.keyword_end, MrbTokens.keyword_end, mrb_lex_state_enum.EXPR_END) },
|
---|
2447 | {"then", new kwtable("then", MrbTokens.keyword_then, MrbTokens.keyword_then, mrb_lex_state_enum.EXPR_BEG) },
|
---|
2448 | {"not", new kwtable("not", MrbTokens.keyword_not, MrbTokens.keyword_not, mrb_lex_state_enum.EXPR_ARG) },
|
---|
2449 | {"false", new kwtable("false", MrbTokens.keyword_false, MrbTokens.keyword_false, mrb_lex_state_enum.EXPR_END) },
|
---|
2450 | {"self", new kwtable("self", MrbTokens.keyword_self, MrbTokens.keyword_self, mrb_lex_state_enum.EXPR_END) },
|
---|
2451 | {"elsif", new kwtable("elsif", MrbTokens.keyword_elsif, MrbTokens.keyword_elsif, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2452 | {"rescue", new kwtable("rescue", MrbTokens.keyword_rescue, MrbTokens.modifier_rescue, mrb_lex_state_enum.EXPR_MID) },
|
---|
2453 | {"true", new kwtable("true", MrbTokens.keyword_true, MrbTokens.keyword_true, mrb_lex_state_enum.EXPR_END) },
|
---|
2454 | {"until", new kwtable("until", MrbTokens.keyword_until, MrbTokens.modifier_until, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2455 | {"unless", new kwtable("unless", MrbTokens.keyword_unless, MrbTokens.modifier_unless, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2456 | {"return", new kwtable("return", MrbTokens.keyword_return, MrbTokens.keyword_return, mrb_lex_state_enum.EXPR_MID) },
|
---|
2457 | {"def", new kwtable("def", MrbTokens.keyword_def, MrbTokens.keyword_def, mrb_lex_state_enum.EXPR_FNAME) },
|
---|
2458 | {"and", new kwtable("and", MrbTokens.keyword_and, MrbTokens.keyword_and, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2459 | {"do", new kwtable("do", MrbTokens.keyword_do, MrbTokens.keyword_do, mrb_lex_state_enum.EXPR_BEG) },
|
---|
2460 | {"yield", new kwtable("yield", MrbTokens.keyword_yield, MrbTokens.keyword_yield, mrb_lex_state_enum.EXPR_ARG) },
|
---|
2461 | {"for", new kwtable("for", MrbTokens.keyword_for, MrbTokens.keyword_for, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2462 | {"undef", new kwtable("undef", MrbTokens.keyword_undef, MrbTokens.keyword_undef, mrb_lex_state_enum.EXPR_FNAME) },
|
---|
2463 | {"or", new kwtable("or", MrbTokens.keyword_or, MrbTokens.keyword_or, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2464 | {"in", new kwtable("in", MrbTokens.keyword_in, MrbTokens.keyword_in, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2465 | {"when", new kwtable("when", MrbTokens.keyword_when, MrbTokens.keyword_when, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2466 | {"retry", new kwtable("retry", MrbTokens.keyword_retry, MrbTokens.keyword_retry, mrb_lex_state_enum.EXPR_END) },
|
---|
2467 | {"if", new kwtable("if", MrbTokens.keyword_if, MrbTokens.modifier_if, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2468 | {"case", new kwtable("case", MrbTokens.keyword_case, MrbTokens.keyword_case, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2469 | {"redo", new kwtable("redo", MrbTokens.keyword_redo, MrbTokens.keyword_redo, mrb_lex_state_enum.EXPR_END) },
|
---|
2470 | {"next", new kwtable("next", MrbTokens.keyword_next, MrbTokens.keyword_next, mrb_lex_state_enum.EXPR_MID) },
|
---|
2471 | {"super", new kwtable("super", MrbTokens.keyword_super, MrbTokens.keyword_super, mrb_lex_state_enum.EXPR_ARG) },
|
---|
2472 | {"module", new kwtable("module", MrbTokens.keyword_module, MrbTokens.keyword_module, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2473 | {"begin", new kwtable("begin", MrbTokens.keyword_begin, MrbTokens.keyword_begin, mrb_lex_state_enum.EXPR_BEG) },
|
---|
2474 | {"__LINE__", new kwtable("__LINE__", MrbTokens.keyword__LINE__, MrbTokens.keyword__LINE__, mrb_lex_state_enum.EXPR_END) },
|
---|
2475 | {"__FILE__", new kwtable("__FILE__", MrbTokens.keyword__FILE__, MrbTokens.keyword__FILE__, mrb_lex_state_enum.EXPR_END) },
|
---|
2476 | {"__ENCODING__", new kwtable("__ENCODING__", MrbTokens.keyword__ENCODING__, MrbTokens.keyword__ENCODING__, mrb_lex_state_enum.EXPR_END) },
|
---|
2477 | {"END", new kwtable("END", MrbTokens.keyword_END, MrbTokens.keyword_END, mrb_lex_state_enum.EXPR_END) },
|
---|
2478 | {"alias", new kwtable("alias", MrbTokens.keyword_alias, MrbTokens.keyword_alias, mrb_lex_state_enum.EXPR_FNAME) },
|
---|
2479 | {"BEGIN", new kwtable("BEGIN", MrbTokens.keyword_BEGIN, MrbTokens.keyword_BEGIN, mrb_lex_state_enum.EXPR_END) },
|
---|
2480 | {"class", new kwtable("class", MrbTokens.keyword_class, MrbTokens.keyword_class, mrb_lex_state_enum.EXPR_CLASS) },
|
---|
2481 | {"while", new kwtable("while", MrbTokens.keyword_while, MrbTokens.modifier_while, mrb_lex_state_enum.EXPR_VALUE) },
|
---|
2482 | };
|
---|
2483 |
|
---|
2484 | kwtable mrb_reserved_word(Uint8Array str, int len)
|
---|
2485 | {
|
---|
2486 | var key = MrbParser.UTF8ArrayToString(str.SubArray(0, len + 1), 0);
|
---|
2487 | kwtable result;
|
---|
2488 |
|
---|
2489 | if (wordlist.TryGetValue(key, out result)) {
|
---|
2490 | return result;
|
---|
2491 | }
|
---|
2492 |
|
---|
2493 | return null;
|
---|
2494 | }
|
---|
2495 |
|
---|
2496 | MrbTokens parser_yylex()
|
---|
2497 | {
|
---|
2498 | int c;
|
---|
2499 | bool space_seen = false;
|
---|
2500 | bool cmd_state;
|
---|
2501 | mrb_lex_state_enum last_state;
|
---|
2502 | int token_column = 0;
|
---|
2503 |
|
---|
2504 | if (this.lex_strterm != null) {
|
---|
2505 | if (is_strterm_type(mrb_string_type.STR_FUNC_HEREDOC)) {
|
---|
2506 | if (this.parsing_heredoc != null)
|
---|
2507 | return parse_string();
|
---|
2508 | }
|
---|
2509 | else
|
---|
2510 | return parse_string();
|
---|
2511 | }
|
---|
2512 | cmd_state = this.cmd_start;
|
---|
2513 | this.cmd_start = false;
|
---|
2514 | for (;;) {
|
---|
2515 | last_state = this.lstate;
|
---|
2516 | switch (c = nextc()) {
|
---|
2517 | /* white spaces */
|
---|
2518 | case ' ':
|
---|
2519 | case '\t':
|
---|
2520 | case '\f':
|
---|
2521 | case '\r':
|
---|
2522 | case '\v':
|
---|
2523 | space_seen = true;
|
---|
2524 | continue;
|
---|
2525 |
|
---|
2526 | case '\x04': /* ^D */
|
---|
2527 | case '\x1a': /* ^Z */
|
---|
2528 | case '\0': /* NUL */
|
---|
2529 | case -1: /* end of script. */
|
---|
2530 | case '#': /* it's a comment */
|
---|
2531 | case -2: /* end of a file */
|
---|
2532 | case '\n':
|
---|
2533 | if (c == '#') {
|
---|
2534 | skip('\n');
|
---|
2535 | }
|
---|
2536 | else if ((c != -2) && (c != '\n')) {
|
---|
2537 | if (this.heredocs_from_nextline == null)
|
---|
2538 | return 0;
|
---|
2539 | }
|
---|
2540 | heredoc_treat_nextline();
|
---|
2541 | switch (this.lstate) {
|
---|
2542 | case mrb_lex_state_enum.EXPR_BEG:
|
---|
2543 | case mrb_lex_state_enum.EXPR_FNAME:
|
---|
2544 | case mrb_lex_state_enum.EXPR_DOT:
|
---|
2545 | case mrb_lex_state_enum.EXPR_CLASS:
|
---|
2546 | case mrb_lex_state_enum.EXPR_VALUE:
|
---|
2547 | this.lineno++;
|
---|
2548 | this.column = 0;
|
---|
2549 | if (this.parsing_heredoc != null) {
|
---|
2550 | if (this.lex_strterm != null) {
|
---|
2551 | return parse_string();
|
---|
2552 | }
|
---|
2553 | }
|
---|
2554 | continue;
|
---|
2555 | default:
|
---|
2556 | break;
|
---|
2557 | }
|
---|
2558 | if (this.parsing_heredoc != null) {
|
---|
2559 | return (MrbTokens)'\n';
|
---|
2560 | }
|
---|
2561 | bool retry = false;
|
---|
2562 | while ((c = nextc()) != 0) {
|
---|
2563 | switch (c) {
|
---|
2564 | case ' ':
|
---|
2565 | case '\t':
|
---|
2566 | case '\f':
|
---|
2567 | case '\r':
|
---|
2568 | case '\v':
|
---|
2569 | space_seen = true;
|
---|
2570 | continue;
|
---|
2571 | case '.':
|
---|
2572 | if ((c = nextc()) != '.') {
|
---|
2573 | pushback(c);
|
---|
2574 | pushback('.');
|
---|
2575 | retry = true;
|
---|
2576 | }
|
---|
2577 | break;
|
---|
2578 | case -1: /* EOF */
|
---|
2579 | case -2: /* end of a file */
|
---|
2580 | break;
|
---|
2581 | default:
|
---|
2582 | pushback(c);
|
---|
2583 | break;
|
---|
2584 | }
|
---|
2585 | break;
|
---|
2586 | }
|
---|
2587 | if (retry)
|
---|
2588 | continue;
|
---|
2589 | this.cmd_start = true;
|
---|
2590 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2591 | return (MrbTokens)'\n';
|
---|
2592 |
|
---|
2593 | case '*':
|
---|
2594 | if ((c = nextc()) == '*') {
|
---|
2595 | if ((c = nextc()) == '=') {
|
---|
2596 | yylval.id = intern("**", 2);
|
---|
2597 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2598 | return MrbTokens.tOP_ASGN;
|
---|
2599 | }
|
---|
2600 | pushback(c);
|
---|
2601 | c = (int)MrbTokens.tPOW;
|
---|
2602 | }
|
---|
2603 | else {
|
---|
2604 | if (c == '=') {
|
---|
2605 | yylval.id = intern_c('*');
|
---|
2606 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2607 | return MrbTokens.tOP_ASGN;
|
---|
2608 | }
|
---|
2609 | pushback(c);
|
---|
2610 | if (IS_SPCARG(c, space_seen)) {
|
---|
2611 | yyWarning("'*' interpreted as argument prefix");
|
---|
2612 | c = (int)MrbTokens.tSTAR;
|
---|
2613 | }
|
---|
2614 | else if (IS_BEG()) {
|
---|
2615 | c = (int)MrbTokens.tSTAR;
|
---|
2616 | }
|
---|
2617 | else {
|
---|
2618 | c = '*';
|
---|
2619 | }
|
---|
2620 | }
|
---|
2621 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2622 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2623 | }
|
---|
2624 | else {
|
---|
2625 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2626 | }
|
---|
2627 | return (MrbTokens)c;
|
---|
2628 |
|
---|
2629 | case '!':
|
---|
2630 | c = nextc();
|
---|
2631 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2632 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2633 | if (c == '@') {
|
---|
2634 | return (MrbTokens)'!';
|
---|
2635 | }
|
---|
2636 | }
|
---|
2637 | else {
|
---|
2638 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2639 | }
|
---|
2640 | if (c == '=') {
|
---|
2641 | return MrbTokens.tNEQ;
|
---|
2642 | }
|
---|
2643 | if (c == '~') {
|
---|
2644 | return MrbTokens.tNMATCH;
|
---|
2645 | }
|
---|
2646 | pushback(c);
|
---|
2647 | return (MrbTokens)'!';
|
---|
2648 |
|
---|
2649 | case '=':
|
---|
2650 | if (this.column == 1) {
|
---|
2651 | if (peeks(begin, 0)) {
|
---|
2652 | c = peekc_n(begin.Length - 1);
|
---|
2653 | if (c < 0 || ISSPACE(c)) {
|
---|
2654 | do {
|
---|
2655 | if (!skips(end, 0)) {
|
---|
2656 | yyError("embedded document meets end of file");
|
---|
2657 | return 0;
|
---|
2658 | }
|
---|
2659 | c = nextc();
|
---|
2660 | } while (!(c < 0 || ISSPACE(c)));
|
---|
2661 | if (c != '\n') skip('\n');
|
---|
2662 | this.lineno++;
|
---|
2663 | this.column = 0;
|
---|
2664 | continue;
|
---|
2665 | }
|
---|
2666 | }
|
---|
2667 | }
|
---|
2668 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2669 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2670 | }
|
---|
2671 | else {
|
---|
2672 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2673 | }
|
---|
2674 | if ((c = nextc()) == '=') {
|
---|
2675 | if ((c = nextc()) == '=') {
|
---|
2676 | return MrbTokens.tEQQ;
|
---|
2677 | }
|
---|
2678 | pushback(c);
|
---|
2679 | return MrbTokens.tEQ;
|
---|
2680 | }
|
---|
2681 | if (c == '~') {
|
---|
2682 | return MrbTokens.tMATCH;
|
---|
2683 | }
|
---|
2684 | else if (c == '>') {
|
---|
2685 | return MrbTokens.tASSOC;
|
---|
2686 | }
|
---|
2687 | pushback(c);
|
---|
2688 | return (MrbTokens)'=';
|
---|
2689 |
|
---|
2690 | case '<':
|
---|
2691 | c = nextc();
|
---|
2692 | if (c == '<' &&
|
---|
2693 | this.lstate != mrb_lex_state_enum.EXPR_DOT &&
|
---|
2694 | this.lstate != mrb_lex_state_enum.EXPR_CLASS &&
|
---|
2695 | !IS_END() &&
|
---|
2696 | (!IS_ARG() || space_seen)) {
|
---|
2697 | MrbTokens token = heredoc_identifier();
|
---|
2698 | if (token != 0)
|
---|
2699 | return token;
|
---|
2700 | }
|
---|
2701 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2702 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2703 | }
|
---|
2704 | else {
|
---|
2705 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2706 | if (this.lstate == mrb_lex_state_enum.EXPR_CLASS) {
|
---|
2707 | this.cmd_start = true;
|
---|
2708 | }
|
---|
2709 | }
|
---|
2710 | if (c == '=') {
|
---|
2711 | if ((c = nextc()) == '>') {
|
---|
2712 | return MrbTokens.tCMP;
|
---|
2713 | }
|
---|
2714 | pushback(c);
|
---|
2715 | return MrbTokens.tLEQ;
|
---|
2716 | }
|
---|
2717 | if (c == '<') {
|
---|
2718 | if ((c = nextc()) == '=') {
|
---|
2719 | yylval.id = intern("<<", 2);
|
---|
2720 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2721 | return MrbTokens.tOP_ASGN;
|
---|
2722 | }
|
---|
2723 | pushback(c);
|
---|
2724 | return MrbTokens.tLSHFT;
|
---|
2725 | }
|
---|
2726 | pushback(c);
|
---|
2727 | return (MrbTokens)'<';
|
---|
2728 |
|
---|
2729 | case '>':
|
---|
2730 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2731 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2732 | }
|
---|
2733 | else {
|
---|
2734 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2735 | }
|
---|
2736 | if ((c = nextc()) == '=') {
|
---|
2737 | return MrbTokens.tGEQ;
|
---|
2738 | }
|
---|
2739 | if (c == '>') {
|
---|
2740 | if ((c = nextc()) == '=') {
|
---|
2741 | yylval.id = intern(">>", 2);
|
---|
2742 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2743 | return MrbTokens.tOP_ASGN;
|
---|
2744 | }
|
---|
2745 | pushback(c);
|
---|
2746 | return MrbTokens.tRSHFT;
|
---|
2747 | }
|
---|
2748 | pushback(c);
|
---|
2749 | return (MrbTokens)'>';
|
---|
2750 |
|
---|
2751 | case '"':
|
---|
2752 | this.lex_strterm = new_strterm(mrb_string_type.str_dquote, '"', 0);
|
---|
2753 | return MrbTokens.tSTRING_BEG;
|
---|
2754 |
|
---|
2755 | case '\'':
|
---|
2756 | this.lex_strterm = new_strterm(mrb_string_type.str_squote, '\'', 0);
|
---|
2757 | return parse_string();
|
---|
2758 |
|
---|
2759 | case '`':
|
---|
2760 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME) {
|
---|
2761 | this.lstate = mrb_lex_state_enum.EXPR_ENDFN;
|
---|
2762 | return (MrbTokens)'`';
|
---|
2763 | }
|
---|
2764 | if (this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2765 | if (cmd_state)
|
---|
2766 | this.lstate = mrb_lex_state_enum.EXPR_CMDARG;
|
---|
2767 | else
|
---|
2768 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2769 | return (MrbTokens)'`';
|
---|
2770 | }
|
---|
2771 | this.lex_strterm = new_strterm(mrb_string_type.str_xquote, '`', 0);
|
---|
2772 | return MrbTokens.tXSTRING_BEG;
|
---|
2773 |
|
---|
2774 | case '?':
|
---|
2775 | if (IS_END()) {
|
---|
2776 | this.lstate = mrb_lex_state_enum.EXPR_VALUE;
|
---|
2777 | return (MrbTokens)'?';
|
---|
2778 | }
|
---|
2779 | c = nextc();
|
---|
2780 | if (c < 0) {
|
---|
2781 | yyError("incomplete character syntax");
|
---|
2782 | return 0;
|
---|
2783 | }
|
---|
2784 | if (ISSPACE(c)) {
|
---|
2785 | if (!IS_ARG()) {
|
---|
2786 | int c2;
|
---|
2787 | switch (c) {
|
---|
2788 | case ' ':
|
---|
2789 | c2 = 's';
|
---|
2790 | break;
|
---|
2791 | case '\n':
|
---|
2792 | c2 = 'n';
|
---|
2793 | break;
|
---|
2794 | case '\t':
|
---|
2795 | c2 = 't';
|
---|
2796 | break;
|
---|
2797 | case '\v':
|
---|
2798 | c2 = 'v';
|
---|
2799 | break;
|
---|
2800 | case '\r':
|
---|
2801 | c2 = 'r';
|
---|
2802 | break;
|
---|
2803 | case '\f':
|
---|
2804 | c2 = 'f';
|
---|
2805 | break;
|
---|
2806 | default:
|
---|
2807 | c2 = 0;
|
---|
2808 | break;
|
---|
2809 | }
|
---|
2810 | if (c2 != 0) {
|
---|
2811 | yyError(String.Format("invalid character syntax; use ?\\{0}", c2));
|
---|
2812 | }
|
---|
2813 | }
|
---|
2814 |
|
---|
2815 | pushback(c);
|
---|
2816 | this.lstate = mrb_lex_state_enum.EXPR_VALUE;
|
---|
2817 | return (MrbTokens)'?';
|
---|
2818 | }
|
---|
2819 | newtok();
|
---|
2820 | /* need support UTF-8 if configured */
|
---|
2821 | if ((isalnum(c) || c == '_')) {
|
---|
2822 | int c2 = nextc();
|
---|
2823 | pushback(c2);
|
---|
2824 | if ((isalnum(c2) || c2 == '_')) {
|
---|
2825 | pushback(c);
|
---|
2826 | this.lstate = mrb_lex_state_enum.EXPR_VALUE;
|
---|
2827 | return (MrbTokens)'?';
|
---|
2828 | }
|
---|
2829 | }
|
---|
2830 | if (c == '\\') {
|
---|
2831 | c = read_escape();
|
---|
2832 | tokadd(c);
|
---|
2833 | }
|
---|
2834 | else {
|
---|
2835 | tokadd(c);
|
---|
2836 | }
|
---|
2837 | tokfix();
|
---|
2838 | yylval.nd = new_str(tok(), toklen());
|
---|
2839 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
2840 | return MrbTokens.tCHAR;
|
---|
2841 |
|
---|
2842 | case '&':
|
---|
2843 | if ((c = nextc()) == '&') {
|
---|
2844 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2845 | if ((c = nextc()) == '=') {
|
---|
2846 | yylval.id = intern("&&", 2);
|
---|
2847 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2848 | return MrbTokens.tOP_ASGN;
|
---|
2849 | }
|
---|
2850 | pushback(c);
|
---|
2851 | return MrbTokens.tANDOP;
|
---|
2852 | }
|
---|
2853 | else if (c == '.') {
|
---|
2854 | this.lstate = mrb_lex_state_enum.EXPR_DOT;
|
---|
2855 | return MrbTokens.tANDDOT;
|
---|
2856 | }
|
---|
2857 | else if (c == '=') {
|
---|
2858 | yylval.id = intern_c('&');
|
---|
2859 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2860 | return MrbTokens.tOP_ASGN;
|
---|
2861 | }
|
---|
2862 | pushback(c);
|
---|
2863 | if (IS_SPCARG(c, space_seen)) {
|
---|
2864 | yyWarning("'&' interpreted as argument prefix");
|
---|
2865 | c = (int)MrbTokens.tAMPER;
|
---|
2866 | }
|
---|
2867 | else if (IS_BEG()) {
|
---|
2868 | c = (int)MrbTokens.tAMPER;
|
---|
2869 | }
|
---|
2870 | else {
|
---|
2871 | c = '&';
|
---|
2872 | }
|
---|
2873 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2874 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2875 | }
|
---|
2876 | else {
|
---|
2877 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2878 | }
|
---|
2879 | return (MrbTokens)c;
|
---|
2880 |
|
---|
2881 | case '|':
|
---|
2882 | if ((c = nextc()) == '|') {
|
---|
2883 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2884 | if ((c = nextc()) == '=') {
|
---|
2885 | yylval.id = intern("||", 2);
|
---|
2886 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2887 | return MrbTokens.tOP_ASGN;
|
---|
2888 | }
|
---|
2889 | pushback(c);
|
---|
2890 | return MrbTokens.tOROP;
|
---|
2891 | }
|
---|
2892 | if (c == '=') {
|
---|
2893 | yylval.id = intern_c('|');
|
---|
2894 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2895 | return MrbTokens.tOP_ASGN;
|
---|
2896 | }
|
---|
2897 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2898 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2899 | }
|
---|
2900 | else {
|
---|
2901 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2902 | }
|
---|
2903 | pushback(c);
|
---|
2904 | return (MrbTokens)'|';
|
---|
2905 |
|
---|
2906 | case '+':
|
---|
2907 | c = nextc();
|
---|
2908 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2909 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2910 | if (c == '@') {
|
---|
2911 | return MrbTokens.tUPLUS;
|
---|
2912 | }
|
---|
2913 | pushback(c);
|
---|
2914 | return (MrbTokens)'+';
|
---|
2915 | }
|
---|
2916 | if (c == '=') {
|
---|
2917 | yylval.id = intern_c('+');
|
---|
2918 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2919 | return MrbTokens.tOP_ASGN;
|
---|
2920 | }
|
---|
2921 | if (IS_BEG() || (IS_SPCARG(c, space_seen) && arg_ambiguous())) {
|
---|
2922 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2923 | pushback(c);
|
---|
2924 | if (c >= 0 && ISDIGIT(c)) {
|
---|
2925 | c = '+';
|
---|
2926 | return start_num(c);
|
---|
2927 | }
|
---|
2928 | return MrbTokens.tUPLUS;
|
---|
2929 | }
|
---|
2930 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2931 | pushback(c);
|
---|
2932 | return (MrbTokens)'+';
|
---|
2933 |
|
---|
2934 | case '-':
|
---|
2935 | c = nextc();
|
---|
2936 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
2937 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
2938 | if (c == '@') {
|
---|
2939 | return MrbTokens.tUMINUS;
|
---|
2940 | }
|
---|
2941 | pushback(c);
|
---|
2942 | return (MrbTokens)'-';
|
---|
2943 | }
|
---|
2944 | if (c == '=') {
|
---|
2945 | yylval.id = intern_c('-');
|
---|
2946 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2947 | return MrbTokens.tOP_ASGN;
|
---|
2948 | }
|
---|
2949 | if (c == '>') {
|
---|
2950 | this.lstate = mrb_lex_state_enum.EXPR_ENDFN;
|
---|
2951 | return MrbTokens.tLAMBDA;
|
---|
2952 | }
|
---|
2953 | if (IS_BEG() || (IS_SPCARG(c, space_seen) && arg_ambiguous())) {
|
---|
2954 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2955 | pushback(c);
|
---|
2956 | if (c >= 0 && ISDIGIT(c)) {
|
---|
2957 | return MrbTokens.tUMINUS_NUM;
|
---|
2958 | }
|
---|
2959 | return MrbTokens.tUMINUS;
|
---|
2960 | }
|
---|
2961 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2962 | pushback(c);
|
---|
2963 | return (MrbTokens)'-';
|
---|
2964 |
|
---|
2965 | case '.':
|
---|
2966 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
2967 | if ((c = nextc()) == '.') {
|
---|
2968 | if ((c = nextc()) == '.') {
|
---|
2969 | return MrbTokens.tDOT3;
|
---|
2970 | }
|
---|
2971 | pushback(c);
|
---|
2972 | return MrbTokens.tDOT2;
|
---|
2973 | }
|
---|
2974 | pushback(c);
|
---|
2975 | if (c >= 0 && ISDIGIT(c)) {
|
---|
2976 | yyError("no .<digit> floating literal anymore; put 0 before dot");
|
---|
2977 | }
|
---|
2978 | this.lstate = mrb_lex_state_enum.EXPR_DOT;
|
---|
2979 | return (MrbTokens)'.';
|
---|
2980 |
|
---|
2981 | case '0':
|
---|
2982 | case '1':
|
---|
2983 | case '2':
|
---|
2984 | case '3':
|
---|
2985 | case '4':
|
---|
2986 | case '5':
|
---|
2987 | case '6':
|
---|
2988 | case '7':
|
---|
2989 | case '8':
|
---|
2990 | case '9':
|
---|
2991 | return start_num(c);
|
---|
2992 |
|
---|
2993 | case ')':
|
---|
2994 | case ']':
|
---|
2995 | case '}':
|
---|
2996 | if (c != '}') {
|
---|
2997 | this.paren_nest--;
|
---|
2998 | }
|
---|
2999 | COND_LEXPOP();
|
---|
3000 | CMDARG_LEXPOP();
|
---|
3001 | if (c == ')')
|
---|
3002 | this.lstate = mrb_lex_state_enum.EXPR_ENDFN;
|
---|
3003 | else
|
---|
3004 | this.lstate = mrb_lex_state_enum.EXPR_ENDARG;
|
---|
3005 | return (MrbTokens)c;
|
---|
3006 |
|
---|
3007 | case ':':
|
---|
3008 | c = nextc();
|
---|
3009 | if (c == ':') {
|
---|
3010 | if (IS_BEG() || this.lstate == mrb_lex_state_enum.EXPR_CLASS || IS_SPCARG(-1, space_seen)) {
|
---|
3011 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3012 | return MrbTokens.tCOLON3;
|
---|
3013 | }
|
---|
3014 | this.lstate = mrb_lex_state_enum.EXPR_DOT;
|
---|
3015 | return MrbTokens.tCOLON2;
|
---|
3016 | }
|
---|
3017 | if (IS_END() || ISSPACE(c)) {
|
---|
3018 | pushback(c);
|
---|
3019 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3020 | return (MrbTokens)':';
|
---|
3021 | }
|
---|
3022 | pushback(c);
|
---|
3023 | this.lstate = mrb_lex_state_enum.EXPR_FNAME;
|
---|
3024 | return MrbTokens.tSYMBEG;
|
---|
3025 |
|
---|
3026 | case '/':
|
---|
3027 | if (IS_BEG()) {
|
---|
3028 | this.lex_strterm = new_strterm(mrb_string_type.str_regexp, '/', 0);
|
---|
3029 | return MrbTokens.tREGEXP_BEG;
|
---|
3030 | }
|
---|
3031 | if ((c = nextc()) == '=') {
|
---|
3032 | yylval.id = intern_c('/');
|
---|
3033 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3034 | return MrbTokens.tOP_ASGN;
|
---|
3035 | }
|
---|
3036 | pushback(c);
|
---|
3037 | if (IS_SPCARG(c, space_seen)) {
|
---|
3038 | this.lex_strterm = new_strterm(mrb_string_type.str_regexp, '/', 0);
|
---|
3039 | return MrbTokens.tREGEXP_BEG;
|
---|
3040 | }
|
---|
3041 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
3042 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
3043 | }
|
---|
3044 | else {
|
---|
3045 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3046 | }
|
---|
3047 | return (MrbTokens)'/';
|
---|
3048 |
|
---|
3049 | case '^':
|
---|
3050 | if ((c = nextc()) == '=') {
|
---|
3051 | yylval.id = intern_c('^');
|
---|
3052 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3053 | return MrbTokens.tOP_ASGN;
|
---|
3054 | }
|
---|
3055 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
3056 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
3057 | }
|
---|
3058 | else {
|
---|
3059 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3060 | }
|
---|
3061 | pushback(c);
|
---|
3062 | return (MrbTokens)'^';
|
---|
3063 |
|
---|
3064 | case ';':
|
---|
3065 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3066 | return (MrbTokens)';';
|
---|
3067 |
|
---|
3068 | case ',':
|
---|
3069 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3070 | return (MrbTokens)',';
|
---|
3071 |
|
---|
3072 | case '~':
|
---|
3073 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
3074 | if ((c = nextc()) != '@') {
|
---|
3075 | pushback(c);
|
---|
3076 | }
|
---|
3077 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
3078 | }
|
---|
3079 | else {
|
---|
3080 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3081 | }
|
---|
3082 | return (MrbTokens)'~';
|
---|
3083 |
|
---|
3084 | case '(':
|
---|
3085 | if (IS_BEG()) {
|
---|
3086 | c = (int)MrbTokens.tLPAREN;
|
---|
3087 | }
|
---|
3088 | else if (IS_SPCARG(-1, space_seen)) {
|
---|
3089 | c = (int)MrbTokens.tLPAREN_ARG;
|
---|
3090 | }
|
---|
3091 | this.paren_nest++;
|
---|
3092 | COND_PUSH(0);
|
---|
3093 | CMDARG_PUSH(0);
|
---|
3094 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3095 | return (MrbTokens)c;
|
---|
3096 |
|
---|
3097 | case '[':
|
---|
3098 | this.paren_nest++;
|
---|
3099 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
3100 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
3101 | if ((c = nextc()) == ']') {
|
---|
3102 | if ((c = nextc()) == '=') {
|
---|
3103 | return MrbTokens.tASET;
|
---|
3104 | }
|
---|
3105 | pushback(c);
|
---|
3106 | return MrbTokens.tAREF;
|
---|
3107 | }
|
---|
3108 | pushback(c);
|
---|
3109 | return (MrbTokens)'[';
|
---|
3110 | }
|
---|
3111 | else if (IS_BEG()) {
|
---|
3112 | c = (int)MrbTokens.tLBRACK;
|
---|
3113 | }
|
---|
3114 | else if (IS_ARG() && space_seen) {
|
---|
3115 | c = (int)MrbTokens.tLBRACK;
|
---|
3116 | }
|
---|
3117 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3118 | COND_PUSH(0);
|
---|
3119 | CMDARG_PUSH(0);
|
---|
3120 | return (MrbTokens)c;
|
---|
3121 |
|
---|
3122 | case '{':
|
---|
3123 | if (this.lpar_beg != 0 && this.lpar_beg == this.paren_nest) {
|
---|
3124 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3125 | this.lpar_beg = 0;
|
---|
3126 | this.paren_nest--;
|
---|
3127 | COND_PUSH(0);
|
---|
3128 | CMDARG_PUSH(0);
|
---|
3129 | return MrbTokens.tLAMBEG;
|
---|
3130 | }
|
---|
3131 | if (IS_ARG() || this.lstate == mrb_lex_state_enum.EXPR_END || this.lstate == mrb_lex_state_enum.EXPR_ENDFN)
|
---|
3132 | c = '{'; /* block (primary) */
|
---|
3133 | else if (this.lstate == mrb_lex_state_enum.EXPR_ENDARG)
|
---|
3134 | c = (int)MrbTokens.tLBRACE_ARG; /* block (expr) */
|
---|
3135 | else
|
---|
3136 | c = (int)MrbTokens.tLBRACE; /* hash */
|
---|
3137 | COND_PUSH(0);
|
---|
3138 | CMDARG_PUSH(0);
|
---|
3139 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3140 | return (MrbTokens)c;
|
---|
3141 |
|
---|
3142 | case '\\':
|
---|
3143 | c = nextc();
|
---|
3144 | if (c == '\n') {
|
---|
3145 | this.lineno++;
|
---|
3146 | this.column = 0;
|
---|
3147 | space_seen = true;
|
---|
3148 | continue; /* skip \\n */
|
---|
3149 | }
|
---|
3150 | pushback(c);
|
---|
3151 | return (MrbTokens)'\\';
|
---|
3152 |
|
---|
3153 | case '%':
|
---|
3154 | if (IS_BEG()) {
|
---|
3155 | c = nextc();
|
---|
3156 | return quotation(c);
|
---|
3157 | }
|
---|
3158 | for (;;) {
|
---|
3159 | if ((c = nextc()) == '=') {
|
---|
3160 | yylval.id = intern_c('%');
|
---|
3161 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3162 | return MrbTokens.tOP_ASGN;
|
---|
3163 | }
|
---|
3164 | if (IS_SPCARG(c, space_seen)) {
|
---|
3165 | return quotation(c);
|
---|
3166 | }
|
---|
3167 | break;
|
---|
3168 | }
|
---|
3169 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME || this.lstate == mrb_lex_state_enum.EXPR_DOT) {
|
---|
3170 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
3171 | }
|
---|
3172 | else {
|
---|
3173 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3174 | }
|
---|
3175 | pushback(c);
|
---|
3176 | return (MrbTokens)'%';
|
---|
3177 |
|
---|
3178 | case '$':
|
---|
3179 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
3180 | token_column = newtok();
|
---|
3181 | c = nextc();
|
---|
3182 | if (c < 0) {
|
---|
3183 | yyError("incomplete global variable syntax");
|
---|
3184 | return 0;
|
---|
3185 | }
|
---|
3186 | switch (c) {
|
---|
3187 | case '_': /* $_: last read line string */
|
---|
3188 | case '~': /* $~: match-data */
|
---|
3189 | case '*': /* $*: argv */
|
---|
3190 | case '$': /* $$: pid */
|
---|
3191 | case '?': /* $?: last status */
|
---|
3192 | case '!': /* $!: error string */
|
---|
3193 | case '@': /* $@: error position */
|
---|
3194 | case '/': /* $/: input record separator */
|
---|
3195 | case '\\': /* $\: output record separator */
|
---|
3196 | case ';': /* $;: field separator */
|
---|
3197 | case ',': /* $,: output field separator */
|
---|
3198 | case '.': /* $.: last read line number */
|
---|
3199 | case '=': /* $=: ignorecase */
|
---|
3200 | case ':': /* $:: load path */
|
---|
3201 | case '<': /* $<: reading filename */
|
---|
3202 | case '>': /* $>: default output handle */
|
---|
3203 | case '\"': /* $": already loaded files */
|
---|
3204 | if (c == '_') {
|
---|
3205 | c = nextc();
|
---|
3206 | if (c >= 0 && identchar(c)) { /* if there is more after _ it is a variable */
|
---|
3207 | tokadd('$');
|
---|
3208 | tokadd(c);
|
---|
3209 | break;
|
---|
3210 | }
|
---|
3211 | pushback(c);
|
---|
3212 | c = '_';
|
---|
3213 | }
|
---|
3214 | tokadd('$');
|
---|
3215 | tokadd(c);
|
---|
3216 | tokfix();
|
---|
3217 | yylval.id = intern_cstr(tok());
|
---|
3218 | return MrbTokens.tGVAR;
|
---|
3219 |
|
---|
3220 | case '-':
|
---|
3221 | tokadd('$');
|
---|
3222 | tokadd(c);
|
---|
3223 | c = nextc();
|
---|
3224 | pushback(c);
|
---|
3225 | tokfix();
|
---|
3226 | yylval.id = intern_cstr(tok());
|
---|
3227 | return MrbTokens.tGVAR;
|
---|
3228 |
|
---|
3229 | case '&': /* $&: last match */
|
---|
3230 | case '`': /* $`: string before last match */
|
---|
3231 | case '\'': /* $': string after last match */
|
---|
3232 | case '+': /* $+: string matches last pattern */
|
---|
3233 | if (last_state == mrb_lex_state_enum.EXPR_FNAME) {
|
---|
3234 | tokadd('$');
|
---|
3235 | tokadd(c);
|
---|
3236 | tokfix();
|
---|
3237 | yylval.id = intern_cstr(tok());
|
---|
3238 | return MrbTokens.tGVAR;
|
---|
3239 | }
|
---|
3240 | yylval.nd = new_back_ref(c);
|
---|
3241 | return MrbTokens.tBACK_REF;
|
---|
3242 |
|
---|
3243 | case '1':
|
---|
3244 | case '2':
|
---|
3245 | case '3':
|
---|
3246 | case '4':
|
---|
3247 | case '5':
|
---|
3248 | case '6':
|
---|
3249 | case '7':
|
---|
3250 | case '8':
|
---|
3251 | case '9':
|
---|
3252 | do {
|
---|
3253 | tokadd(c);
|
---|
3254 | c = nextc();
|
---|
3255 | } while (c >= 0 && isdigit(c));
|
---|
3256 | pushback(c);
|
---|
3257 | if (last_state == mrb_lex_state_enum.EXPR_FNAME) {
|
---|
3258 | tokfix();
|
---|
3259 | yylval.id = intern_cstr(tok());
|
---|
3260 | return MrbTokens.tGVAR;
|
---|
3261 | }
|
---|
3262 | tokfix(); {
|
---|
3263 | Uint8Array t;
|
---|
3264 | ulong n = strtoul(tok(), 0, out t, 10);
|
---|
3265 | if (n > int.MaxValue) {
|
---|
3266 | yyError("capture group index must be <= {0}", int.MaxValue.ToString());
|
---|
3267 | return 0;
|
---|
3268 | }
|
---|
3269 | yylval.nd = new_nth_ref((int)n);
|
---|
3270 | }
|
---|
3271 | return MrbTokens.tNTH_REF;
|
---|
3272 |
|
---|
3273 | default:
|
---|
3274 | if (!identchar(c)) {
|
---|
3275 | pushback(c);
|
---|
3276 | return (MrbTokens)'$';
|
---|
3277 | }
|
---|
3278 | tokadd('$');
|
---|
3279 | break;
|
---|
3280 |
|
---|
3281 | case '0':
|
---|
3282 | tokadd('$');
|
---|
3283 | break;
|
---|
3284 | }
|
---|
3285 | break;
|
---|
3286 |
|
---|
3287 | case '@':
|
---|
3288 | c = nextc();
|
---|
3289 | token_column = newtok();
|
---|
3290 | tokadd('@');
|
---|
3291 | if (c == '@') {
|
---|
3292 | tokadd('@');
|
---|
3293 | c = nextc();
|
---|
3294 | }
|
---|
3295 | if (c < 0) {
|
---|
3296 | if (this.tidx == 1) {
|
---|
3297 | yyError("incomplete instance variable syntax");
|
---|
3298 | }
|
---|
3299 | else {
|
---|
3300 | yyError("incomplete class variable syntax");
|
---|
3301 | }
|
---|
3302 | return 0;
|
---|
3303 | }
|
---|
3304 | else if (isdigit(c)) {
|
---|
3305 | if (this.tidx == 1) {
|
---|
3306 | yyError("'@{0}' is not allowed as an instance variable name", ((char)c).ToString());
|
---|
3307 | }
|
---|
3308 | else {
|
---|
3309 | yyError("'@@{0}' is not allowed as a class variable name", ((char)c).ToString());
|
---|
3310 | }
|
---|
3311 | return 0;
|
---|
3312 | }
|
---|
3313 | if (!identchar(c)) {
|
---|
3314 | pushback(c);
|
---|
3315 | return (MrbTokens)'@';
|
---|
3316 | }
|
---|
3317 | break;
|
---|
3318 |
|
---|
3319 | case '_':
|
---|
3320 | token_column = newtok();
|
---|
3321 | break;
|
---|
3322 |
|
---|
3323 | default:
|
---|
3324 | if (!identchar(c)) {
|
---|
3325 | yyError("Invalid char '\\x{0}' in expression", c.ToString("X2"));
|
---|
3326 | continue;
|
---|
3327 | }
|
---|
3328 |
|
---|
3329 | token_column = newtok();
|
---|
3330 | break;
|
---|
3331 | }
|
---|
3332 | break;
|
---|
3333 | }
|
---|
3334 |
|
---|
3335 | do {
|
---|
3336 | tokadd(c);
|
---|
3337 | c = nextc();
|
---|
3338 | if (c < 0) break;
|
---|
3339 | } while (identchar(c));
|
---|
3340 | if (token_column == 0 && toklen() == 7 && (c < 0 || c == '\n') &&
|
---|
3341 | strncmp(tok(), 0, MrbParser.UTF8StringToArray("__END__"), 0, toklen()) == 0)
|
---|
3342 | return (MrbTokens)(-1);
|
---|
3343 |
|
---|
3344 | switch ((char)tok()[0]) {
|
---|
3345 | case '@':
|
---|
3346 | case '$':
|
---|
3347 | pushback(c);
|
---|
3348 | break;
|
---|
3349 | default:
|
---|
3350 | if ((c == '!' || c == '?') && !peek('=')) {
|
---|
3351 | tokadd(c);
|
---|
3352 | }
|
---|
3353 | else {
|
---|
3354 | pushback(c);
|
---|
3355 | }
|
---|
3356 | break;
|
---|
3357 | }
|
---|
3358 | tokfix();
|
---|
3359 | {
|
---|
3360 | MrbTokens result = 0;
|
---|
3361 |
|
---|
3362 | switch ((char)tok()[0]) {
|
---|
3363 | case '$':
|
---|
3364 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
3365 | result = MrbTokens.tGVAR;
|
---|
3366 | break;
|
---|
3367 | case '@':
|
---|
3368 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
3369 | if (tok()[1] == '@')
|
---|
3370 | result = MrbTokens.tCVAR;
|
---|
3371 | else
|
---|
3372 | result = MrbTokens.tIVAR;
|
---|
3373 | break;
|
---|
3374 |
|
---|
3375 | default:
|
---|
3376 | if (toklast() == '!' || toklast() == '?') {
|
---|
3377 | result = MrbTokens.tFID;
|
---|
3378 | }
|
---|
3379 | else {
|
---|
3380 | if (this.lstate == mrb_lex_state_enum.EXPR_FNAME) {
|
---|
3381 | if ((c = nextc()) == '=' && !peek('~') && !peek('>') &&
|
---|
3382 | (!peek('=') || (peek_n('>', 1)))) {
|
---|
3383 | result = MrbTokens.tIDENTIFIER;
|
---|
3384 | tokadd(c);
|
---|
3385 | tokfix();
|
---|
3386 | }
|
---|
3387 | else {
|
---|
3388 | pushback(c);
|
---|
3389 | }
|
---|
3390 | }
|
---|
3391 | if (result == 0 && ISUPPER(tok()[0])) {
|
---|
3392 | result = MrbTokens.tCONSTANT;
|
---|
3393 | }
|
---|
3394 | else {
|
---|
3395 | result = MrbTokens.tIDENTIFIER;
|
---|
3396 | }
|
---|
3397 | }
|
---|
3398 |
|
---|
3399 | if (IS_LABEL_POSSIBLE(cmd_state)) {
|
---|
3400 | if (IS_LABEL_SUFFIX(0)) {
|
---|
3401 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3402 | nextc();
|
---|
3403 | tokfix();
|
---|
3404 | yylval.id = intern_cstr(tok());
|
---|
3405 | return MrbTokens.tLABEL;
|
---|
3406 | }
|
---|
3407 | }
|
---|
3408 | if (this.lstate != mrb_lex_state_enum.EXPR_DOT) {
|
---|
3409 | kwtable kw;
|
---|
3410 | /* See if it is a reserved word. */
|
---|
3411 | kw = mrb_reserved_word(tok(), toklen());
|
---|
3412 | if (kw != null) {
|
---|
3413 | mrb_lex_state_enum state = this.lstate;
|
---|
3414 | yylval.num = this.lineno;
|
---|
3415 | this.lstate = kw.state;
|
---|
3416 | if (state == mrb_lex_state_enum.EXPR_FNAME) {
|
---|
3417 | yylval.id = intern_cstr(kw.name);
|
---|
3418 | return kw.id0;
|
---|
3419 | }
|
---|
3420 | if (this.lstate == mrb_lex_state_enum.EXPR_BEG) {
|
---|
3421 | this.cmd_start = true;
|
---|
3422 | }
|
---|
3423 | if (kw.id0 == MrbTokens.keyword_do) {
|
---|
3424 | if (this.lpar_beg != 0 && this.lpar_beg == this.paren_nest) {
|
---|
3425 | this.lpar_beg = 0;
|
---|
3426 | this.paren_nest--;
|
---|
3427 | return MrbTokens.keyword_do_LAMBDA;
|
---|
3428 | }
|
---|
3429 | if (COND_P() != 0) return MrbTokens.keyword_do_cond;
|
---|
3430 | if (CMDARG_P() != 0 && state != mrb_lex_state_enum.EXPR_CMDARG)
|
---|
3431 | return MrbTokens.keyword_do_block;
|
---|
3432 | if (state == mrb_lex_state_enum.EXPR_ENDARG || state == mrb_lex_state_enum.EXPR_BEG)
|
---|
3433 | return MrbTokens.keyword_do_block;
|
---|
3434 | return MrbTokens.keyword_do;
|
---|
3435 | }
|
---|
3436 | if (state == mrb_lex_state_enum.EXPR_BEG || state == mrb_lex_state_enum.EXPR_VALUE)
|
---|
3437 | return kw.id0;
|
---|
3438 | else {
|
---|
3439 | if (kw.id0 != kw.id1)
|
---|
3440 | this.lstate = mrb_lex_state_enum.EXPR_BEG;
|
---|
3441 | return kw.id1;
|
---|
3442 | }
|
---|
3443 | }
|
---|
3444 | }
|
---|
3445 |
|
---|
3446 | if (IS_BEG() || this.lstate == mrb_lex_state_enum.EXPR_DOT || IS_ARG()) {
|
---|
3447 | if (cmd_state) {
|
---|
3448 | this.lstate = mrb_lex_state_enum.EXPR_CMDARG;
|
---|
3449 | }
|
---|
3450 | else {
|
---|
3451 | this.lstate = mrb_lex_state_enum.EXPR_ARG;
|
---|
3452 | }
|
---|
3453 | }
|
---|
3454 | else if (this.lstate == mrb_lex_state_enum.EXPR_FNAME) {
|
---|
3455 | this.lstate = mrb_lex_state_enum.EXPR_ENDFN;
|
---|
3456 | }
|
---|
3457 | else {
|
---|
3458 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
3459 | }
|
---|
3460 | break;
|
---|
3461 | }
|
---|
3462 | {
|
---|
3463 | mrb_sym ident = intern_cstr(tok());
|
---|
3464 |
|
---|
3465 | yylval.id = ident;
|
---|
3466 | #if false
|
---|
3467 | if (last_state != mrb_lex_state_enum.EXPR_DOT && islower(tok()[0]) && lvar_defined(ident)) {
|
---|
3468 | this.lstate = mrb_lex_state_enum.EXPR_END;
|
---|
3469 | }
|
---|
3470 | #endif
|
---|
3471 | }
|
---|
3472 | return result;
|
---|
3473 | }
|
---|
3474 | }
|
---|
3475 |
|
---|
3476 | private void mrb_parser_parse()
|
---|
3477 | {
|
---|
3478 | yylval = new MrbToken(filename);
|
---|
3479 |
|
---|
3480 | try {
|
---|
3481 | this.cmd_start = true;
|
---|
3482 | this.in_def = this.in_single = 0;
|
---|
3483 | this.lex_strterm = null;
|
---|
3484 | this.tokbuf = this.buf;
|
---|
3485 | this.tsiz = MRB_PARSER_TOKBUF_SIZE;
|
---|
3486 |
|
---|
3487 | yyParse(this, null);
|
---|
3488 | }
|
---|
3489 | catch (Exception) {
|
---|
3490 | yyError("memory allocation error");
|
---|
3491 | this.tree = null;
|
---|
3492 | }
|
---|
3493 | }
|
---|
3494 |
|
---|
3495 | public void mrb_parser_set_filename(string f)
|
---|
3496 | {
|
---|
3497 | int i;
|
---|
3498 |
|
---|
3499 | this.lineno = (this.filename_table_length > 0) ? 0 : 1;
|
---|
3500 |
|
---|
3501 | for (i = 0; i < this.filename_table_length; ++i) {
|
---|
3502 | if (this.filename_table[i] == f) {
|
---|
3503 | this.current_filename_index = i;
|
---|
3504 | return;
|
---|
3505 | }
|
---|
3506 | }
|
---|
3507 |
|
---|
3508 | this.current_filename_index = this.filename_table_length + 1;
|
---|
3509 | this.filename_table.Push(f);
|
---|
3510 | }
|
---|
3511 |
|
---|
3512 | public void mrb_parse_nstring(string filename, Uint8Array s)
|
---|
3513 | {
|
---|
3514 | mrb_parser_set_filename(filename);
|
---|
3515 | this.s = s;
|
---|
3516 | this.sp = 0;
|
---|
3517 |
|
---|
3518 | mrb_parser_parse();
|
---|
3519 | }
|
---|
3520 |
|
---|
3521 | public static node parse(string text, string filename = "temporary.rb")
|
---|
3522 | {
|
---|
3523 | var generator = new MrbParser();
|
---|
3524 | generator.mrb_parse_nstring(filename, UTF8StringToArray(text));
|
---|
3525 | var scope = generator.tree as scope_node;
|
---|
3526 | if (scope == null)
|
---|
3527 | return null;
|
---|
3528 | return scope.body;
|
---|
3529 | }
|
---|
3530 |
|
---|
3531 | public static node evaluate(node tree)
|
---|
3532 | {
|
---|
3533 | var p = tree.p;
|
---|
3534 |
|
---|
3535 | var node = tree as IEvaluatable;
|
---|
3536 | if (node != null)
|
---|
3537 | return tree;
|
---|
3538 |
|
---|
3539 | var begin = tree as begin_node;
|
---|
3540 | if (begin != null) {
|
---|
3541 | node[] progs = new node[0];
|
---|
3542 | foreach (var r in begin.progs) {
|
---|
3543 | progs.Push(evaluate(r));
|
---|
3544 | }
|
---|
3545 | if (progs.Length != 1)
|
---|
3546 | return new begin_node(p, progs);
|
---|
3547 | return progs[0];
|
---|
3548 | }
|
---|
3549 |
|
---|
3550 | var negate = tree as negate_node;
|
---|
3551 | if (negate != null) {
|
---|
3552 | var n = evaluate(negate.n);
|
---|
3553 | if (n is int_node) {
|
---|
3554 | var a = ((int_node)n).to_i();
|
---|
3555 | var c = UTF8StringToArray((-a).ToString());
|
---|
3556 | return new int_node(p, c, 10);
|
---|
3557 | }
|
---|
3558 | if (n is float_node) {
|
---|
3559 | var a = ((float_node)n).to_f();
|
---|
3560 | var c = UTF8StringToArray((-a).ToString());
|
---|
3561 | return new float_node(p, c);
|
---|
3562 | }
|
---|
3563 | return n;
|
---|
3564 | }
|
---|
3565 |
|
---|
3566 | var dot2 = tree as dot2_node;
|
---|
3567 | if (dot2 != null) {
|
---|
3568 | var a = evaluate(dot2.a);
|
---|
3569 | var b = evaluate(dot2.b);
|
---|
3570 | return new dot2_node(p, a, b);
|
---|
3571 | }
|
---|
3572 |
|
---|
3573 | var dot3 = tree as dot3_node;
|
---|
3574 | if (dot3 != null) {
|
---|
3575 | var a = evaluate(dot3.a);
|
---|
3576 | var b = evaluate(dot3.b);
|
---|
3577 | return new dot3_node(p, a, b);
|
---|
3578 | }
|
---|
3579 |
|
---|
3580 | var call = tree as call_node;
|
---|
3581 | if (call != null) {
|
---|
3582 | var obj = evaluate(call.obj);
|
---|
3583 | var args = new node[0];
|
---|
3584 | foreach (var a in call.args) {
|
---|
3585 | args.Push(evaluate(a));
|
---|
3586 | }
|
---|
3587 |
|
---|
3588 | var eva = obj as IEvaluatable;
|
---|
3589 | if (eva != null) {
|
---|
3590 | node ret;
|
---|
3591 | if ((ret = eva.evaluate(p.sym2name(call.method), args)) != null)
|
---|
3592 | return ret;
|
---|
3593 | }
|
---|
3594 | return new call_node(p, obj, call.method, args, call.block);
|
---|
3595 | }
|
---|
3596 |
|
---|
3597 | return tree;
|
---|
3598 | }
|
---|
3599 |
|
---|
3600 | public string to_ruby()
|
---|
3601 | {
|
---|
3602 | if (tree != null) {
|
---|
3603 | var cond = new ruby_code_cond(filename);
|
---|
3604 | tree.to_ruby(cond);
|
---|
3605 | return cond.ToString();
|
---|
3606 | }
|
---|
3607 | if (s != null)
|
---|
3608 | return UTF8ArrayToString(s, 0);
|
---|
3609 | else
|
---|
3610 | return "";
|
---|
3611 | }
|
---|
3612 | int MrbParser.yyInput.Token { get { return (int)yylval.Kind; } }
|
---|
3613 |
|
---|
3614 | object MrbParser.yyInput.Value { get { return yylval.Value; } }
|
---|
3615 |
|
---|
3616 | bool MrbParser.yyInput.Advance()
|
---|
3617 | {
|
---|
3618 | var token = parser_yylex();
|
---|
3619 | yylval.SetToken(token, MrbParser.UTF8ArrayToString(tok().SubArray(0, toklen() + 1), 0));
|
---|
3620 |
|
---|
3621 | return token > 0;
|
---|
3622 | }
|
---|
3623 |
|
---|
3624 | void yyConsoleOut.yyWarning(string message, object[] expected)
|
---|
3625 | {
|
---|
3626 | App.WriteLine($"{filename}({lineno},{column}): warning {String.Format(message, expected)}");
|
---|
3627 | }
|
---|
3628 |
|
---|
3629 | void yyConsoleOut.yyError(string message, object[] expected)
|
---|
3630 | {
|
---|
3631 | App.WriteLine($"{filename}({lineno},{column}): error {String.Format(message, expected)}");
|
---|
3632 | }
|
---|
3633 | }
|
---|
3634 | }
|
---|