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Edit File: ruby-token.rb
# # irb/ruby-token.rb - ruby tokens # $Release Version: 0.9.6$ # $Revision: 28158 $ # by Keiju ISHITSUKA(keiju@ruby-lang.org) # # -- # # # 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