本文整理汇总了C++中SimpleString::AsBool方法的典型用法代码示例。如果您正苦于以下问题：C++ SimpleString::AsBool方法的具体用法？C++ SimpleString::AsBool怎么用？C++ SimpleString::AsBool使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SimpleString的用法示例。
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示例1: EvaluateConditional
// It might be useful to have some arithmetic parsing for more complex expressions,
// but eventually that would just become writing a whole little language...
// NOTE: This is very error-prone if the format isn't exactly "A OP B", so
// don't use this for anything that the user can touch.
bool ConfigParser::EvaluateConditional( const IDataStream& Stream )
{
// Parse three tokens: a left side, an operator, and a right side
// Valid expressions:
// bool b-op bool
// int n-op int
// int n-op float
// float n-op float
// float n-op int
// string s-op string
// b-op: == !=
// n-op: < <= > >= == !=
// s-op: == != ~= ~!= (case-insensitive)
// Use same rules as above to determine the type of each value
// This would be a good place to refactor to reuse some code
SToken::ETokenType LeftSideType = SToken::ET_None;
SToken::ETokenType RightSideType = SToken::ET_None;
Array< char > LeftSideString;
Array< char > OperatorString;
Array< char > RightSideString;
char StrMark = '\"';
// Parse left side
for(;;)
{
char c = Stream.ReadInt8();
if( c == ' ' || Stream.EOS() )
{
LeftSideString.PushBack( '\0' );
break;
}
else
{
InnerParse( c, StrMark, LeftSideString, 0, LeftSideType );
}
}
// Parse operator
for(;;)
{
char c = Stream.ReadInt8();
if( c == ' ' || Stream.EOS() )
{
OperatorString.PushBack( '\0' );
break;
}
OperatorString.PushBack( c );
}
// Parse right side
for(;;)
{
char c = Stream.ReadInt8();
if( c == '\0' || c == ' ' || Stream.EOS() )
{
RightSideString.PushBack( '\0' );
break;
}
else
{
InnerParse( c, StrMark, RightSideString, 0, RightSideType );
}
}
// Evaluate
if( LeftSideType == RightSideType ||
( LeftSideType == SToken::ET_Int && RightSideType == SToken::ET_Float ) ||
( LeftSideType == SToken::ET_Float && RightSideType == SToken::ET_Int ) )
{
SimpleString LeftSide = LeftSideString.GetData();
SimpleString RightSide = RightSideString.GetData();
SimpleString Operator = OperatorString.GetData();
if( LeftSideType == SToken::ET_Bool )
{
bool LeftSideBool = LeftSide.AsBool();
bool RightSideBool = RightSide.AsBool();
if( Operator == "==" )
{
return ( LeftSideBool == RightSideBool );
}
else if( Operator == "!=" )
{
return ( LeftSideBool != RightSideBool );
}
else
{
DEBUGWARNDESC( "Unknown operator in conditional expression" );
return false;
}
}
//.........这里部分代码省略.........