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