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Optimization, improved Match(). The str[0] == '%' improvement

This commit is contained in:
Reijo Tomperi 2008-12-23 20:17:05 +00:00
parent b32663324e
commit c4ecdf06f0
1 changed files with 73 additions and 49 deletions
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122
token.cpp
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@ -182,67 +182,91 @@ bool TOKEN::Match(const TOKEN *tok, const char pattern[], const char *varname1[]
return true;
bool useVar1;
// Any symbolname..
if (strcmp(str,"%var%")==0 || strcmp(str,"%type%")==0)
// Compare the first character of the string for optimization reasons
// before doing more detailed checks.
bool patternIdentified = false;
if( str[0] == '%' )
{
if (!tok->isName())
return false;
}
// Accept any token
else if (strcmp(str,"%any%")==0 )
{
}
// Variable name..
else if ((useVar1 = (strcmp(str,"%var1%")==0)) || strcmp(str,"%var2%")==0)
{
const char **varname = useVar1 ? varname1 : varname2;
if ( ! varname )
return false;
if (tok->_str != varname[0])
return false;
for ( int i = 1; varname[i]; i++ )
// Any symbolname..
if (strcmp(str,"%var%")==0 || strcmp(str,"%type%")==0)
{
if ( !(tok->tokAt(2)) )
if (!tok->isName())
return false;
if ( strcmp(tok->strAt( 1), ".") )
patternIdentified = true;
}
// Accept any token
else if (strcmp(str,"%any%")==0 )
{
patternIdentified = true;
}
// Variable name..
else if ((useVar1 = (strcmp(str,"%var1%")==0)) || strcmp(str,"%var2%")==0)
{
const char **varname = useVar1 ? varname1 : varname2;
if ( ! varname )
return false;
if ( strcmp(tok->strAt( 2), varname[i]) )
if (tok->_str != varname[0])
return false;
tok = tok->tokAt(2);
for ( int i = 1; varname[i]; i++ )
{
if ( !(tok->tokAt(2)) )
return false;
if ( strcmp(tok->strAt( 1), ".") )
return false;
if ( strcmp(tok->strAt( 2), varname[i]) )
return false;
tok = tok->tokAt(2);
}
patternIdentified = true;
}
else if (strcmp(str,"%varid%")==0)
{
if ( tok->varId() != varid )
return false;
patternIdentified = true;
}
else if (strcmp(str,"%num%")==0)
{
if ( !tok->isNumber() )
return false;
patternIdentified = true;
}
else if (strcmp(str,"%bool%")==0)
{
if ( !tok->isBoolean() )
return false;
patternIdentified = true;
}
else if (strcmp(str,"%str%")==0)
{
if ( tok->_str[0] != '\"' )
return false;
patternIdentified = true;
}
}
else if (strcmp(str,"%varid%")==0)
if( patternIdentified )
{
if ( tok->varId() != varid )
return false;
}
else if (strcmp(str,"%num%")==0)
{
if ( !tok->isNumber() )
return false;
}
else if (strcmp(str,"%bool%")==0)
{
if ( !tok->isBoolean() )
return false;
}
else if (strcmp(str,"%str%")==0)
{
if ( tok->_str[0] != '\"' )
return false;
// Pattern was identified already above.
}
// [.. => search for a one-character token..