mirror of
https://github.com/c64scene-ar/llvm-6502.git
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e62c1185be
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4843 91177308-0d34-0410-b5e6-96231b3b80d8
67 lines
1.6 KiB
C++
67 lines
1.6 KiB
C++
/*===-- FileLexer.l - Scanner for TableGen Files ----------------*- C++ -*-===//
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//
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//
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//===------------------------------------------------------------------------=*/
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%option prefix="File"
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%option yylineno
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%option nostdinit
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%option never-interactive
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%option batch
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%option noyywrap
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%option nodefault
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%option 8bit
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%option outfile="Lexer.cpp"
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%option ecs
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%option noreject
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%option noyymore
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%{
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#include "Record.h"
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typedef std::pair<Record*, std::vector<Init*>*> SubClassRefTy;
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#include "FileParser.h"
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// ParseInt - This has to handle the special case of binary numbers 0b0101
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static int ParseInt(const char *Str) {
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if (Str[0] == '0' && Str[1] == 'b')
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return strtol(Str+2, 0, 2);
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return strtol(Str, 0, 0);
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}
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%}
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Comment \/\/.*
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Identifier [a-zA-Z_][0-9a-zA-Z_]*
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Integer [-+]?[0-9]+|0x[0-9a-fA-F]+|0b[01]+
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StringVal \"[^"]*\"
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%%
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{Comment} { /* Ignore comments */ }
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int { return INT; }
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bit { return BIT; }
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bits { return BITS; }
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string { return STRING; }
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list { return LIST; }
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class { return CLASS; }
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def { return DEF; }
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field { return FIELD; }
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set { return SET; }
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in { return IN; }
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{Identifier} { Filelval.StrVal = new std::string(yytext, yytext+yyleng);
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return ID; }
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{StringVal} { Filelval.StrVal = new std::string(yytext+1, yytext+yyleng-1);
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return STRVAL; }
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{Integer} { Filelval.IntVal = ParseInt(Filetext); return INTVAL; }
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[ \t\n]+ { /* Ignore whitespace */ }
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. { return Filetext[0]; }
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%%
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