Last change
on this file since 439 was 439, checked in by coas-nagasima, 4 years ago |
mrubyを2.1.1に更新
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Property svn:eol-style
set to
native
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Property svn:mime-type
set to
text/x-ruby;charset=UTF-8
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File size:
2.0 KB
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Rev | Line | |
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[270] | 1 | ##
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| 2 | # Struct
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| 3 | #
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| 4 | # ISO 15.2.18
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| 5 |
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| 6 | if Object.const_defined?(:Struct)
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| 7 | class Struct
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| 8 |
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| 9 | ##
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| 10 | # Calls the given block for each element of +self+
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| 11 | # and pass the respective element.
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| 12 | #
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| 13 | # ISO 15.2.18.4.4
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| 14 | def each(&block)
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| 15 | self.class.members.each{|field|
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| 16 | block.call(self[field])
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| 17 | }
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| 18 | self
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| 19 | end
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| 20 |
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| 21 | ##
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| 22 | # Calls the given block for each element of +self+
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| 23 | # and pass the name and value of the respectiev
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| 24 | # element.
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| 25 | #
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| 26 | # ISO 15.2.18.4.5
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| 27 | def each_pair(&block)
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| 28 | self.class.members.each{|field|
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| 29 | block.call(field.to_sym, self[field])
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| 30 | }
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| 31 | self
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| 32 | end
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| 33 |
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| 34 | ##
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| 35 | # Calls the given block for each element of +self+
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| 36 | # and returns an array with all elements of which
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| 37 | # block is not false.
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| 38 | #
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| 39 | # ISO 15.2.18.4.7
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| 40 | def select(&block)
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| 41 | ary = []
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| 42 | self.class.members.each{|field|
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| 43 | val = self[field]
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| 44 | ary.push(val) if block.call(val)
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| 45 | }
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| 46 | ary
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| 47 | end
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| 48 |
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[439] | 49 | def _inspect(recur_list)
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| 50 | return "#<struct #{self.class}:...>" if recur_list[self.object_id]
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| 51 | recur_list[self.object_id] = true
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[270] | 52 | name = self.class.to_s
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| 53 | if name[0] == "#"
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| 54 | str = "#<struct "
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| 55 | else
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| 56 | str = "#<struct #{name} "
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| 57 | end
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| 58 | buf = []
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| 59 | self.each_pair do |k,v|
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[439] | 60 | buf.push k.to_s + "=" + v._inspect(recur_list)
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[270] | 61 | end
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| 62 | str + buf.join(", ") + ">"
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| 63 | end
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| 64 |
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| 65 | ##
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| 66 | # call-seq:
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| 67 | # struct.to_s -> string
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| 68 | # struct.inspect -> string
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| 69 | #
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| 70 | # Describe the contents of this struct in a string.
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| 71 | #
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| 72 | # 15.2.18.4.10(x)
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| 73 | #
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| 74 | def inspect
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[439] | 75 | self._inspect({})
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[270] | 76 | end
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| 77 |
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| 78 | ##
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| 79 | # 15.2.18.4.11(x)
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| 80 | #
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| 81 | alias to_s inspect
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[331] | 82 |
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[439] | 83 | ##
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| 84 | # call-seq:
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| 85 | # hsh.dig(key,...) -> object
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| 86 | #
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| 87 | # Extracts the nested value specified by the sequence of <i>key</i>
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| 88 | # objects by calling +dig+ at each step, returning +nil+ if any
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| 89 | # intermediate step is +nil+.
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| 90 | #
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| 91 | def dig(idx,*args)
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| 92 | n = self[idx]
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| 93 | if args.size > 0
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| 94 | n&.dig(*args)
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| 95 | else
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| 96 | n
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| 97 | end
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[331] | 98 | end
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| 99 | end
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[270] | 100 | end
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