You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
1.1 KiB
38 lines
1.1 KiB
12 months ago
|
#ifndef _SYSYF_FLEX_LEXER_H_
|
||
|
|
#define _SYSYF_FLEX_LEXER_H_
|
||
|
|
|
||
|
|
#ifndef YY_DECL
|
||
|
|
#define YY_DECL \
|
||
|
|
yy::SysYFParser::symbol_type SysYFFlexLexer::yylex(SysYFDriver& driver)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
// We need this for yyFlexLexer. If we don't #undef yyFlexLexer, the
|
||
|
|
// preprocessor chokes on the line `#define yyFlexLexer yyFlexLexer`
|
||
|
|
// in `FlexLexer.h`:
|
||
|
|
#undef yyFlexLexer
|
||
|
|
#include <FlexLexer.h>
|
||
|
|
|
||
|
|
// We need this for the yy::SysYFParser::symbol_type:
|
||
|
|
#include "SysYFParser.h"
|
||
|
|
|
||
|
|
// We need this for the yy::location type:
|
||
|
|
#include "location.hh"
|
||
|
|
|
||
|
|
class SysYFFlexLexer : public yyFlexLexer {
|
||
|
|
public:
|
||
|
|
// Use the superclass's constructor:
|
||
|
|
using yyFlexLexer::yyFlexLexer;
|
||
|
|
|
||
|
|
// Provide the interface to `yylex`; `flex` will emit the
|
||
|
|
// definition into `SysYFScanner.cpp`:
|
||
|
|
yy::SysYFParser::symbol_type yylex(SysYFDriver& driver);
|
||
|
|
|
||
|
|
// This seems like a reasonable place to put the location object
|
||
|
|
// rather than it being static (in the sense of having internal
|
||
|
|
// linkage at translation unit scope, not in the sense of being a
|
||
|
|
// class variable):
|
||
|
|
yy::location loc;
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif // _SYSYF_FLEX_LEXER_H_
|