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Edit File : ruby-token.rb \| Size : 7.30 KB
# # irb/ruby-token.rb - ruby tokens # $Release Version: 0.9.6$ # $Revision: 38358 $ # by Keiju ISHITSUKA(keiju@ruby-lang.org) # # -- # # # # :stopdoc: module RubyToken EXPR_BEG = :EXPR_BEG EXPR_MID = :EXPR_MID EXPR_END = :EXPR_END EXPR_ARG = :EXPR_ARG EXPR_FNAME = :EXPR_FNAME EXPR_DOT = :EXPR_DOT EXPR_CLASS = :EXPR_CLASS class Token def initialize(seek, line_no, char_no) @seek = seek @line_no = line_no @char_no = char_no end attr :seek, :line_no, :char_no end class TkNode < Token def initialize(seek, line_no, char_no) super end attr :node end class TkId < Token def initialize(seek, line_no, char_no, name) super(seek, line_no, char_no) @name = name end attr :name end class TkVal < Token def initialize(seek, line_no, char_no, value = nil) super(seek, line_no, char_no) @value = value end attr :value end class TkOp < Token attr_accessor :name end class TkOPASGN < TkOp def initialize(seek, line_no, char_no, op) super(seek, line_no, char_no) op = TkReading2Token[op][0] unless op.kind_of?(Symbol) @op = op end attr :op end class TkUnknownChar < Token def initialize(seek, line_no, char_no, id) super(seek, line_no, char_no) @name = name end attr :name end class TkError < Token end def Token(token, value = nil) case token when String if (tk = TkReading2Token[token]).nil? IRB.fail TkReading2TokenNoKey, token end tk = Token(tk[0], value) if tk.kind_of?(TkOp) tk.name = token end return tk when Symbol if (tk = TkSymbol2Token[token]).nil? IRB.fail TkSymbol2TokenNoKey, token end return Token(tk[0], value) else if (token.ancestors & [TkId, TkVal, TkOPASGN, TkUnknownChar]).empty? token.new(@prev_seek, @prev_line_no, @prev_char_no) else token.new(@prev_seek, @prev_line_no, @prev_char_no, value) end end end TokenDefinitions = [ [:TkCLASS, TkId, "class", EXPR_CLASS], [:TkMODULE, TkId, "module", EXPR_BEG], [:TkDEF, TkId, "def", EXPR_FNAME], [:TkUNDEF, TkId, "undef", EXPR_FNAME], [:TkBEGIN, TkId, "begin", EXPR_BEG], [:TkRESCUE, TkId, "rescue", EXPR_MID], [:TkENSURE, TkId, "ensure", EXPR_BEG], [:TkEND, TkId, "end", EXPR_END], [:TkIF, TkId, "if", EXPR_BEG, :TkIF_MOD], [:TkUNLESS, TkId, "unless", EXPR_BEG, :TkUNLESS_MOD], [:TkTHEN, TkId, "then", EXPR_BEG], [:TkELSIF, TkId, "elsif", EXPR_BEG], [:TkELSE, TkId, "else", EXPR_BEG], [:TkCASE, TkId, "case", EXPR_BEG], [:TkWHEN, TkId, "when", EXPR_BEG], [:TkWHILE, TkId, "while", EXPR_BEG, :TkWHILE_MOD], [:TkUNTIL, TkId, "until", EXPR_BEG, :TkUNTIL_MOD], [:TkFOR, TkId, "for", EXPR_BEG], [:TkBREAK, TkId, "break", EXPR_END], [:TkNEXT, TkId, "next", EXPR_END], [:TkREDO, TkId, "redo", EXPR_END], [:TkRETRY, TkId, "retry", EXPR_END], [:TkIN, TkId, "in", EXPR_BEG], [:TkDO, TkId, "do", EXPR_BEG], [:TkRETURN, TkId, "return", EXPR_MID], [:TkYIELD, TkId, "yield", EXPR_END], [:TkSUPER, TkId, "super", EXPR_END], [:TkSELF, TkId, "self", EXPR_END], [:TkNIL, TkId, "nil", EXPR_END], [:TkTRUE, TkId, "true", EXPR_END], [:TkFALSE, TkId, "false", EXPR_END], [:TkAND, TkId, "and", EXPR_BEG], [:TkOR, TkId, "or", EXPR_BEG], [:TkNOT, TkId, "not", EXPR_BEG], [:TkIF_MOD, TkId], [:TkUNLESS_MOD, TkId], [:TkWHILE_MOD, TkId], [:TkUNTIL_MOD, TkId], [:TkALIAS, TkId, "alias", EXPR_FNAME], [:TkDEFINED, TkId, "defined?", EXPR_END], [:TklBEGIN, TkId, "BEGIN", EXPR_END], [:TklEND, TkId, "END", EXPR_END], [:Tk__LINE__, TkId, "__LINE__", EXPR_END], [:Tk__FILE__, TkId, "__FILE__", EXPR_END], [:TkIDENTIFIER, TkId], [:TkFID, TkId], [:TkGVAR, TkId], [:TkCVAR, TkId], [:TkIVAR, TkId], [:TkCONSTANT, TkId], [:TkINTEGER, TkVal], [:TkFLOAT, TkVal], [:TkSTRING, TkVal], [:TkXSTRING, TkVal], [:TkREGEXP, TkVal], [:TkSYMBOL, TkVal], [:TkDSTRING, TkNode], [:TkDXSTRING, TkNode], [:TkDREGEXP, TkNode], [:TkNTH_REF, TkNode], [:TkBACK_REF, TkNode], [:TkUPLUS, TkOp, "+@"], [:TkUMINUS, TkOp, "-@"], [:TkPOW, TkOp, "*"], [:TkCMP, TkOp, "<=>"], [:TkEQ, TkOp, "=="], [:TkEQQ, TkOp, "==="], [:TkNEQ, TkOp, "!="], [:TkGEQ, TkOp, ">="], [:TkLEQ, TkOp, "<="], [:TkANDOP, TkOp, "&&"], [:TkOROP, TkOp, "\|\|"], [:TkMATCH, TkOp, "=~"], [:TkNMATCH, TkOp, "!~"], [:TkDOT2, TkOp, ".."], [:TkDOT3, TkOp, "..."], [:TkAREF, TkOp, "[]"], [:TkASET, TkOp, "[]="], [:TkLSHFT, TkOp, "<<"], [:TkRSHFT, TkOp, ">>"], [:TkCOLON2, TkOp], [:TkCOLON3, TkOp], # [:OPASGN, TkOp], # +=, -= etc. # [:TkASSOC, TkOp, "=>"], [:TkQUESTION, TkOp, "?"], #? [:TkCOLON, TkOp, ":"], #: [:TkfLPAREN], # func( # [:TkfLBRACK], # func[ # [:TkfLBRACE], # func{ # [:TkSTAR], # arg [:TkAMPER], # &arg # [:TkSYMBEG], # :SYMBOL [:TkGT, TkOp, ">"], [:TkLT, TkOp, "<"], [:TkPLUS, TkOp, "+"], [:TkMINUS, TkOp, "-"], [:TkMULT, TkOp, ""], [:TkDIV, TkOp, "/"], [:TkMOD, TkOp, "%"], [:TkBITOR, TkOp, "\|"], [:TkBITXOR, TkOp, "^"], [:TkBITAND, TkOp, "&"], [:TkBITNOT, TkOp, "~"], [:TkNOTOP, TkOp, "!"], [:TkBACKQUOTE, TkOp, "`"], [:TkASSIGN, Token, "="], [:TkDOT, Token, "."], [:TkLPAREN, Token, "("], #(exp) [:TkLBRACK, Token, "["], #[arry] [:TkLBRACE, Token, "{"], #{hash} [:TkRPAREN, Token, ")"], [:TkRBRACK, Token, "]"], [:TkRBRACE, Token, "}"], [:TkCOMMA, Token, ","], [:TkSEMICOLON, Token, ";"], [:TkCOMMENT], [:TkRD_COMMENT], [:TkSPACE], [:TkNL], [:TkEND_OF_SCRIPT], [:TkBACKSLASH, TkUnknownChar, "\\"], [:TkAT, TkUnknownChar, "@"], [:TkDOLLAR, TkUnknownChar, "$"], ] # {reading => token_class} # {reading => [token_class, opt]} TkReading2Token = {} TkSymbol2Token = {} def RubyToken.def_token(token_n, super_token = Token, reading = nil, opts) token_n = token_n.id2name if token_n.kind_of?(Symbol) if RubyToken.const_defined?(token_n) IRB.fail AlreadyDefinedToken, token_n end token_c = eval("class #{token_n} < #{super_token}; end; #{token_n}") if reading if TkReading2Token[reading] IRB.fail TkReading2TokenDuplicateError, token_n, reading end if opts.empty? TkReading2Token[reading] = [token_c] else TkReading2Token[reading] = [token_c].concat(opts) end end TkSymbol2Token[token_n.intern] = token_c end for defs in TokenDefinitions def_token(defs) end end # :startdoc: Back

Edit File : ruby-token.rb | Size : 7.30 KB

#
#   irb/ruby-token.rb - ruby tokens
#   	$Release Version: 0.9.6$
#   	$Revision: 38358 $
#   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
# --
#
#
#
# :stopdoc:
module RubyToken
  EXPR_BEG = :EXPR_BEG
  EXPR_MID = :EXPR_MID
  EXPR_END = :EXPR_END
  EXPR_ARG = :EXPR_ARG
  EXPR_FNAME = :EXPR_FNAME
  EXPR_DOT = :EXPR_DOT
  EXPR_CLASS = :EXPR_CLASS

class Token
    def initialize(seek, line_no, char_no)
      @seek = seek
      @line_no = line_no
      @char_no = char_no
    end
    attr :seek, :line_no, :char_no
  end

class TkNode < Token
    def initialize(seek, line_no, char_no)
      super
    end
    attr :node
  end

class TkId < Token
    def initialize(seek, line_no, char_no, name)
      super(seek, line_no, char_no)
      @name = name
    end
    attr :name
  end

class TkVal < Token
    def initialize(seek, line_no, char_no, value = nil)
      super(seek, line_no, char_no)
      @value = value
    end
    attr :value
  end

class TkOp < Token
    attr_accessor :name
  end

class TkOPASGN < TkOp
    def initialize(seek, line_no, char_no, op)
      super(seek, line_no, char_no)
      op = TkReading2Token[op][0] unless op.kind_of?(Symbol)
      @op = op
    end
    attr :op
  end

class TkUnknownChar < Token
    def initialize(seek, line_no, char_no, id)
      super(seek, line_no, char_no)
      @name = name
    end
    attr :name
  end

class TkError < Token
  end

def Token(token, value = nil)
    case token
    when String
      if (tk = TkReading2Token[token]).nil?
	IRB.fail TkReading2TokenNoKey, token
      end
      tk = Token(tk[0], value)
      if tk.kind_of?(TkOp)
	tk.name = token
      end
      return tk
    when Symbol
      if (tk = TkSymbol2Token[token]).nil?
	IRB.fail TkSymbol2TokenNoKey, token
      end
      return Token(tk[0], value)
    else
      if (token.ancestors & [TkId, TkVal, TkOPASGN, TkUnknownChar]).empty?
	token.new(@prev_seek, @prev_line_no, @prev_char_no)
      else
	token.new(@prev_seek, @prev_line_no, @prev_char_no, value)
      end
    end
  end

TokenDefinitions = [
    [:TkCLASS,      TkId,  "class",  EXPR_CLASS],
    [:TkMODULE,     TkId,  "module", EXPR_BEG],
    [:TkDEF,	    TkId,  "def",    EXPR_FNAME],
    [:TkUNDEF,      TkId,  "undef",  EXPR_FNAME],
    [:TkBEGIN,      TkId,  "begin",  EXPR_BEG],
    [:TkRESCUE,     TkId,  "rescue", EXPR_MID],
    [:TkENSURE,     TkId,  "ensure", EXPR_BEG],
    [:TkEND,	    TkId,  "end",    EXPR_END],
    [:TkIF,         TkId,  "if",     EXPR_BEG, :TkIF_MOD],
    [:TkUNLESS,     TkId,  "unless", EXPR_BEG, :TkUNLESS_MOD],
    [:TkTHEN,	    TkId,  "then",   EXPR_BEG],
    [:TkELSIF,      TkId,  "elsif",  EXPR_BEG],
    [:TkELSE,	    TkId,  "else",   EXPR_BEG],
    [:TkCASE,	    TkId,  "case",   EXPR_BEG],
    [:TkWHEN,	    TkId,  "when",   EXPR_BEG],
    [:TkWHILE,      TkId,  "while",  EXPR_BEG, :TkWHILE_MOD],
    [:TkUNTIL,      TkId,  "until",  EXPR_BEG, :TkUNTIL_MOD],
    [:TkFOR,	    TkId,  "for",    EXPR_BEG],
    [:TkBREAK,      TkId,  "break",  EXPR_END],
    [:TkNEXT,	    TkId,  "next",   EXPR_END],
    [:TkREDO,	    TkId,  "redo",   EXPR_END],
    [:TkRETRY,      TkId,  "retry",  EXPR_END],
    [:TkIN,	    TkId,  "in",     EXPR_BEG],
    [:TkDO,	    TkId,  "do",     EXPR_BEG],
    [:TkRETURN,     TkId,  "return", EXPR_MID],
    [:TkYIELD,      TkId,  "yield",  EXPR_END],
    [:TkSUPER,      TkId,  "super",  EXPR_END],
    [:TkSELF,	    TkId,  "self",   EXPR_END],
    [:TkNIL, 	    TkId,  "nil",    EXPR_END],
    [:TkTRUE,	    TkId,  "true",   EXPR_END],
    [:TkFALSE,      TkId,  "false",  EXPR_END],
    [:TkAND,	    TkId,  "and",    EXPR_BEG],
    [:TkOR, 	    TkId,  "or",     EXPR_BEG],
    [:TkNOT,	    TkId,  "not",    EXPR_BEG],
    [:TkIF_MOD,     TkId],
    [:TkUNLESS_MOD, TkId],
    [:TkWHILE_MOD,  TkId],
    [:TkUNTIL_MOD,  TkId],
    [:TkALIAS,      TkId,  "alias",    EXPR_FNAME],
    [:TkDEFINED,    TkId,  "defined?", EXPR_END],
    [:TklBEGIN,     TkId,  "BEGIN",    EXPR_END],
    [:TklEND,	    TkId,  "END",      EXPR_END],
    [:Tk__LINE__,   TkId,  "__LINE__", EXPR_END],
    [:Tk__FILE__,   TkId,  "__FILE__", EXPR_END],

[:TkIDENTIFIER, TkId],
    [:TkFID,	    TkId],
    [:TkGVAR,	    TkId],
    [:TkCVAR,	    TkId],
    [:TkIVAR,	    TkId],
    [:TkCONSTANT,   TkId],

[:TkINTEGER,    TkVal],
    [:TkFLOAT,      TkVal],
    [:TkSTRING,     TkVal],
    [:TkXSTRING,    TkVal],
    [:TkREGEXP,     TkVal],
    [:TkSYMBOL,     TkVal],

[:TkDSTRING,    TkNode],
    [:TkDXSTRING,   TkNode],
    [:TkDREGEXP,    TkNode],
    [:TkNTH_REF,    TkNode],
    [:TkBACK_REF,   TkNode],

[:TkUPLUS,      TkOp,   "+@"],
    [:TkUMINUS,     TkOp,   "-@"],
    [:TkPOW,	    TkOp,   "**"],
    [:TkCMP,	    TkOp,   "<=>"],
    [:TkEQ,	    TkOp,   "=="],
    [:TkEQQ,	    TkOp,   "==="],
    [:TkNEQ,	    TkOp,   "!="],
    [:TkGEQ,	    TkOp,   ">="],
    [:TkLEQ,	    TkOp,   "<="],
    [:TkANDOP,      TkOp,   "&&"],
    [:TkOROP,	    TkOp,   "||"],
    [:TkMATCH,      TkOp,   "=~"],
    [:TkNMATCH,     TkOp,   "!~"],
    [:TkDOT2,	    TkOp,   ".."],
    [:TkDOT3,	    TkOp,   "..."],
    [:TkAREF,	    TkOp,   "[]"],
    [:TkASET,	    TkOp,   "[]="],
    [:TkLSHFT,      TkOp,   "<<"],
    [:TkRSHFT,      TkOp,   ">>"],
    [:TkCOLON2,     TkOp],
    [:TkCOLON3,     TkOp],
#   [:OPASGN,	    TkOp],               # +=, -=  etc. #
    [:TkASSOC,      TkOp,   "=>"],
    [:TkQUESTION,   TkOp,   "?"],	 #?
    [:TkCOLON,      TkOp,   ":"],        #:

[:TkfLPAREN],         # func( #
    [:TkfLBRACK],         # func[ #
    [:TkfLBRACE],         # func{ #
    [:TkSTAR],            # *arg
    [:TkAMPER],           # &arg #
    [:TkSYMBEG],          # :SYMBOL

[:TkGT,	    TkOp,   ">"],
    [:TkLT,	    TkOp,   "<"],
    [:TkPLUS,	    TkOp,   "+"],
    [:TkMINUS,      TkOp,   "-"],
    [:TkMULT,	    TkOp,   "*"],
    [:TkDIV,	    TkOp,   "/"],
    [:TkMOD,	    TkOp,   "%"],
    [:TkBITOR,      TkOp,   "|"],
    [:TkBITXOR,     TkOp,   "^"],
    [:TkBITAND,     TkOp,   "&"],
    [:TkBITNOT,     TkOp,   "~"],
    [:TkNOTOP,      TkOp,   "!"],

[:TkBACKQUOTE,  TkOp,   "`"],

[:TkASSIGN,     Token,  "="],
    [:TkDOT,	    Token,  "."],
    [:TkLPAREN,     Token,  "("],  #(exp)
    [:TkLBRACK,     Token,  "["],  #[arry]
    [:TkLBRACE,     Token,  "{"],  #{hash}
    [:TkRPAREN,     Token,  ")"],
    [:TkRBRACK,     Token,  "]"],
    [:TkRBRACE,     Token,  "}"],
    [:TkCOMMA,      Token,  ","],
    [:TkSEMICOLON,  Token,  ";"],

[:TkCOMMENT],
    [:TkRD_COMMENT],
    [:TkSPACE],
    [:TkNL],
    [:TkEND_OF_SCRIPT],

[:TkBACKSLASH,  TkUnknownChar,  "\\"],
    [:TkAT,	    TkUnknownChar,  "@"],
    [:TkDOLLAR,     TkUnknownChar,  "$"],
  ]

# {reading => token_class}
  # {reading => [token_class, *opt]}
  TkReading2Token = {}
  TkSymbol2Token = {}

def RubyToken.def_token(token_n, super_token = Token, reading = nil, *opts)
    token_n = token_n.id2name if token_n.kind_of?(Symbol)
    if RubyToken.const_defined?(token_n)
      IRB.fail AlreadyDefinedToken, token_n
    end
    token_c = eval("class #{token_n} < #{super_token}; end; #{token_n}")

if reading
      if TkReading2Token[reading]
	IRB.fail TkReading2TokenDuplicateError, token_n, reading
      end
      if opts.empty?
	TkReading2Token[reading] = [token_c]
      else
	TkReading2Token[reading] = [token_c].concat(opts)
      end
    end
    TkSymbol2Token[token_n.intern] = token_c
  end

for defs in TokenDefinitions
    def_token(*defs)
  end
end
# :startdoc:

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