bool mhmakefileparser::IsExprTrue(const string &EqualExpr) const
{
string Expr=ExpandExpression(EqualExpr);
string Rest;
Expr=ResolveExpression(Expr,Rest);
if (Expr.empty() || Expr==s_FalseString)
return false;
else
return true;
}
bool NativeParserTest::TestExpression(wxString& expression,
const TokenIdxSet& searchScope,
TokenIdxSet& result)
{
// find all other matches
std::queue<ParserComponent> components;
BreakUpComponents(expression, components);
ResolveExpression(m_Parser.GetTokenTree(), components, searchScope, result, true, true /*isPrefix*/);
if (s_DebugSmartSense)
CCLogger::Get()->DebugLog(F(_T("NativeParserTest::TestExpression, returned %lu results"), static_cast<unsigned long>(result.size())));
return true;
}
string mhmakefileparser::ResolveExpression(const string &InExpr,string &Rest) const
{
unsigned i=0;
string Ret;
string Expr=InExpr;
Rest=g_EmptyString;
while (i<Expr.length())
{
while (strchr(" \t\r",Expr[i])) i++;
switch (Expr[i])
{
case '!':
if (i==Expr.length()-1)
{
i++; // to break out of the loop
Ret=s_TrueString; /* the input was ! which means true */
}
else if (Expr[i+1]!='=')
{
Ret=ResolveExpression(Expr.substr(i+1),Expr);
Ret = Ret.empty() || Ret==s_FalseString ? s_TrueString : g_EmptyString;
i=0;
}
else
{
Ret = Ret!=ResolveExpression(Expr.substr(i+2),Expr) ? s_TrueString : g_EmptyString;
i=0;
}
break;
case '&':
#ifdef _DEBUG
if (i==Expr.length()-1)
{
throw(string("Error in expression near ")+Expr[i]+": "+InExpr);
} else
#endif
if (Expr[i+1]!='&')
{
Ret+=Expr[i++];
}
else
{
Ret=AndExpression(Ret,ResolveExpression(Expr.substr(i+2),Expr));
i=0;
}
break;
case '|':
#ifdef _DEBUG
if (i==Expr.length()-1)
{
throw(string("Error in expression near ")+Expr[i]+": "+InExpr);
} else
#endif
if (Expr[i+1]!='|')
{
Ret+=Expr[i++];
}
else
{
Ret=OrExpression(Ret,ResolveExpression(Expr.substr(i+2),Expr));
i=0;
}
break;
case '(':
if (Ret=="defined")
{
Ret=IsDefined(ResolveExpression(Expr.substr(i+1),Expr)) ? s_TrueString : g_EmptyString;
}
else
{
Ret+=ResolveExpression(Expr.substr(i+1),Expr);
}
i=0;
break;
case ')':
Rest=Expr.substr(i+1);
return Ret;
break;
case '"':
{
i++;
while (i<Expr.length())
{
char Char=Expr[i++];
if (Char=='"')
break;
Ret+=Char;
}
}
break;
case '=':
if (i==Expr.length()-1)
{
i++; // To break out of the loop
}
else
if (Expr[i+1]!='=')
{
Ret+=Expr[i++];
}
else
{
Ret = Ret==ResolveExpression(Expr.substr(i+2),Expr) ? s_TrueString : g_EmptyString;
i=0;
}
break;
default:
Ret+=Expr[i++];
break;
}
}
return Ret;
}
