1 | /*
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2 | ** apiprint.c
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3 | **
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4 | */
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5 |
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6 | #include <string.h>
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7 | #include "mrdb.h"
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8 | #include <mruby/value.h>
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9 | #include <mruby/class.h>
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10 | #include <mruby/compile.h>
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11 | #include <mruby/error.h>
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12 | #include <mruby/numeric.h>
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13 | #include <mruby/string.h>
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14 | #include "apiprint.h"
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15 |
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16 | static void
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17 | mrdb_check_syntax(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t len)
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18 | {
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19 | mrbc_context *c;
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20 |
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21 | c = mrbc_context_new(mrb);
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22 | c->no_exec = TRUE;
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23 | c->capture_errors = TRUE;
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24 | mrbc_filename(mrb, c, (const char*)dbg->prvfile);
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25 | c->lineno = dbg->prvline;
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26 |
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27 | /* Load program */
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28 | mrb_load_nstring_cxt(mrb, expr, len, c);
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29 |
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30 | mrbc_context_free(mrb, c);
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31 | }
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32 |
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33 | mrb_value
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34 | mrb_debug_eval(mrb_state *mrb, mrb_debug_context *dbg, const char *expr, size_t len, mrb_bool *exc, int direct_eval)
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35 | {
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36 | void (*tmp)(struct mrb_state *, struct mrb_irep *, const mrb_code *, mrb_value *);
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37 | mrb_value ruby_code;
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38 | mrb_value s;
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39 | mrb_value v;
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40 | mrb_value recv;
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41 |
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42 | /* disable code_fetch_hook */
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43 | tmp = mrb->code_fetch_hook;
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44 | mrb->code_fetch_hook = NULL;
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45 |
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46 | mrdb_check_syntax(mrb, dbg, expr, len);
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47 | if (mrb->exc) {
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48 | v = mrb_obj_value(mrb->exc);
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49 | mrb->exc = 0;
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50 | }
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51 | else if (direct_eval) {
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52 | recv = dbg->regs[0];
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53 |
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54 | v = mrb_funcall(mrb, recv, expr, 0);
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55 | }
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56 | else {
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57 | /*
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58 | * begin
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59 | * expr
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60 | * rescue => e
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61 | * e
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62 | * end
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63 | */
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64 | ruby_code = mrb_str_new_lit(mrb, "begin\n");
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65 | ruby_code = mrb_str_cat(mrb, ruby_code, expr, len);
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66 | ruby_code = mrb_str_cat_lit(mrb, ruby_code, "\nrescue => e\ne\nend");
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67 |
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68 | recv = dbg->regs[0];
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69 |
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70 | v = mrb_funcall(mrb, recv, "instance_eval", 1, ruby_code);
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71 | }
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72 |
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73 | if (exc) {
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74 | *exc = mrb_obj_is_kind_of(mrb, v, mrb->eException_class);
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75 | }
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76 |
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77 | s = mrb_inspect(mrb, v);
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78 |
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79 | /* enable code_fetch_hook */
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80 | mrb->code_fetch_hook = tmp;
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81 |
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82 | return s;
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83 | }
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