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The ConstExpressionParser Class Reference

constant expression parser used for the C preprocessor More...

Declaration​

class ConstExpressionParser { ... }

Included Headers​

#include <src/constexp.h>

Public Constructors Index​

ConstExpressionParser ()

Public Destructor Index​

~ConstExpressionParser ()

Public Member Functions Index​

boolparse (const char *fileName, int line, const std::string &expression, const std::string &orgExpression)

Private Member Attributes Index​

std::unique_ptr< Private >p

Description​

constant expression parser used for the C preprocessor

Definition at line 25 of file constexp.h.

Public Constructors​

ConstExpressionParser()​

ConstExpressionParser::ConstExpressionParser ()

Declaration at line 28 of file constexp.h, definition at line 129 of file constexp.l.

129ConstExpressionParser::ConstExpressionParser() : p(std::make_unique<Private>())
130{
131 constexpYYlex_init_extra(&p->constexpYY_extra, &p->yyscanner);
132}

Reference p.

Public Destructor​

~ConstExpressionParser()​

ConstExpressionParser::~ConstExpressionParser ()

Declaration at line 29 of file constexp.h, definition at line 134 of file constexp.l.

134ConstExpressionParser::~ConstExpressionParser()
135{
136 constexpYYlex_destroy(p->yyscanner);
137}

Reference p.

Public Member Functions​

parse()​

bool ConstExpressionParser::parse (const char * fileName, int line, const std::string & expression, const std::string & orgExpression)

Declaration at line 31 of file constexp.h, definition at line 139 of file constexp.l.

139bool ConstExpressionParser::parse(const char *fileName,int lineNr,const std::string &s, const std::string &orgStr)
140{
141 struct yyguts_t *yyg = (struct yyguts_t*)p->yyscanner;
142
143#ifdef FLEX_DEBUG
144 constexpYYset_debug(Debug::isFlagSet(Debug::Lex_constexp)?1:0,p->yyscanner);
145#endif
146
147 yyextra->constExpFileName = fileName;
148 yyextra->constExpLineNr = lineNr;
149 yyextra->orgString = orgStr;
150 yyextra->inputString = s;
151 yyextra->inputPosition = 0;
152 constexpYYrestart( yyin, p->yyscanner );
153
154 DebugLex debugLex(Debug::Lex_constexp, __FILE__, fileName);
155 //printf("Expression: '%s'\n",qPrint(s));
156
157 constexpYYparse(p->yyscanner);
158
159 //printf("Result: %ld\n",(long)g_resultValue);
160 bool result = static_cast<long>(yyextra->resultValue)!=0;
161
162 return result;
163}

References constexpYYparse, Debug::isFlagSet, Debug::Lex_constexp and p.

Private Member Attributes​

p​

std::unique_ptr<Private> ConstExpressionParser::p

Definition at line 34 of file constexp.h.

34 std::unique_ptr<Private> p;

Referenced by ConstExpressionParser, parse and ~ConstExpressionParser.

The documentation for this class was generated from the following files:

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