bool Parser::parseSpecial (int code, const TokenLoc& loc, Scanner& scanner)
{
if (!(mOptional && mEmpty))
reportSeriousError ("Unexpected special token", loc);
else
scanner.putbackSpecial (code, loc);
return false;
}
bool LineParser::parseSpecial (int code, const TokenLoc& loc, Scanner& scanner)
{
if (code==Scanner::S_newline &&
(mState==EndState || mState==BeginState || mState==PotentialEndState))
return false;
if (code==Scanner::S_comma && mState==MessageState)
{
mState = MessageCommaState;
return true;
}
if (code==Scanner::S_ref && mState==PotentialExplicitState)
{
mState = ExplicitState;
return true;
}
if (code==Scanner::S_member && mState==PotentialExplicitState)
{
mState = MemberState;
parseExpression (scanner, loc);
mState = EndState;
return true;
}
if (code==Scanner::S_newline && mState==MessageButtonState)
{
Generator::message (mCode, mLiterals, mName, mButtons);
return false;
}
if (code==Scanner::S_comma && mState==MessageButtonState)
{
mState = MessageButtonCommaState;
return true;
}
if (code==Scanner::S_member && mState==SetPotentialMemberVarState)
{
mState = SetMemberVarState;
return true;
}
if (mAllowExpression && mState==BeginState &&
(code==Scanner::S_open || code==Scanner::S_minus))
{
scanner.putbackSpecial (code, loc);
parseExpression (scanner, loc);
mState = EndState;
return true;
}
return Parser::parseSpecial (code, loc, scanner);
}
bool ScriptParser::parseSpecial (int code, const TokenLoc& loc, Scanner& scanner)
{
if (code==Scanner::S_newline) // empty line
return true;
if (code==Scanner::S_open) /// \todo Option to switch this off
{
scanner.putbackSpecial (code, loc);
return parseKeyword (Scanner::K_if, loc, scanner);
}
mLineParser.reset();
if (mLineParser.parseSpecial (code, loc, scanner))
scanner.scan (mLineParser);
return true;
}
bool ExprParser::parseSpecial (int code, const TokenLoc& loc, Scanner& scanner)
{
if (!mExplicit.empty())
{
if (mRefOp && code==Scanner::S_open)
{
/// \todo add option to disable this workaround
mOperators.push_back ('(');
mTokenLoc = loc;
return true;
}
if (!mRefOp && code==Scanner::S_ref)
{
mRefOp = true;
return true;
}
if (!mMemberOp && code==Scanner::S_member)
{
mMemberOp = true;
return true;
}
return Parser::parseSpecial (code, loc, scanner);
}
if (code==Scanner::S_comma)
{
mTokenLoc = loc;
if (mFirst)
{
// leading comma
mFirst = false;
return true;
}
// end marker
scanner.putbackSpecial (code, loc);
return false;
}
mFirst = false;
if (code==Scanner::S_newline)
{
// end marker
mTokenLoc = loc;
scanner.putbackSpecial (code, loc);
return false;
}
if (code==Scanner::S_minus && mNextOperand)
{
// unary
mOperators.push_back ('m');
mTokenLoc = loc;
return true;
}
if (code==Scanner::S_open)
{
if (mNextOperand)
{
mOperators.push_back ('(');
mTokenLoc = loc;
return true;
}
else
{
// no comma was used between arguments
scanner.putbackKeyword (code, loc);
return false;
}
}
if (code==Scanner::S_close && !mNextOperand)
{
if (isOpen())
{
close();
return true;
}
mTokenLoc = loc;
scanner.putbackSpecial (code, loc);
return false;
}
if (!mNextOperand)
{
mTokenLoc = loc;
char c = 0; // comparison
switch (code)
{
case Scanner::S_plus: c = '+'; break;
case Scanner::S_minus: c = '-'; break;
case Scanner::S_mult: pushBinaryOperator ('*'); return true;
case Scanner::S_div: pushBinaryOperator ('/'); return true;
case Scanner::S_cmpEQ: c = 'e'; break;
case Scanner::S_cmpNE: c = 'n'; break;
case Scanner::S_cmpLT: c = 'l'; break;
case Scanner::S_cmpLE: c = 'L'; break;
case Scanner::S_cmpGT: c = 'g'; break;
case Scanner::S_cmpGE: c = 'G'; break;
}
if (c)
{
if (mArgument && !isOpen())
{
// expression ends here
// Thank you Morrowind for this rotten syntax :(
scanner.putbackSpecial (code, loc);
return false;
}
pushBinaryOperator (c);
return true;
}
}
return Parser::parseSpecial (code, loc, scanner);
}