private void ParseFunctionParameterList(ScriptFunction func)
{
Modifiers modifiers;
bool atEndOfParameterList = false;
while ((!atEndOfParameterList) &&
(!_source.NextIsKeyword(PredefinedSymbol.CloseParenthesis)))
{
modifiers = new Modifiers();
while (_source.PeekNextToken() is ModifierToken)
{
modifiers.Add((ModifierToken)_source.ReadNextToken());
}
if (_source.NextIsKeyword(PredefinedSymbol.VariableArguments))
{
func.VariableArguments = true;
_source.ExpectKeyword(PredefinedSymbol.CloseParenthesis, "Variable arguments must be the last parameter");
break;
}
Token parameterType = _source.ReadNextAsVariableType();
Token parameterName = null;
_source.IgnoreAsteriskIfPresent();
CompilerUtils.VerifyModifiersAgainstType(ModifierTargets.FunctionParameter, modifiers);
VerifyParameterTypeValidForFunction(parameterType);
if (!_source.PeekNextToken().Defined)
{
parameterName = _source.ReadNextTokenAndThrowIfAlreadyDefined();
}
else
{
func.IsPrototypeOnly = true;
}
FunctionParameter parameter = new FunctionParameter(parameterType, parameterName);
parameter.Modifiers = modifiers;
if (_source.NextIsKeyword(PredefinedSymbol.SetEqual))
{
parameter.DefaultValue = _source.ReadNextAsConstInt();
}
if (_source.NextIsKeyword(PredefinedSymbol.CloseParenthesis))
{
atEndOfParameterList = true;
}
else
{
_source.ExpectKeyword(PredefinedSymbol.Comma);
}
func.Parameters.Add(parameter);
}
}
private void DeclareLocalVariable(Token variableType)
{
_source.IgnoreAsteriskIfPresent();
Token variableName = _source.ReadNextTokenAndThrowIfAlreadyDefined();
CompilerUtils.SetArrayPropertiesOnTokenFromStream(_source, variableName);
CompilerUtils.VerifyModifiersAgainstType(ModifierTargets.LocalVariable, _state.NextTokenModifiers);
/* TODO: get this working
* ScriptVariable newVariable = ProcessVariableDeclaration(variableType, _output.GlobalData, null, _state.NextTokenModifiers);
*
* variableName.Define(TokenType.LocalVariable, newVariable); */
if (_source.NextIsKeyword(PredefinedSymbol.SetEqual))
{
Expression setEqualTo = ReadExpression(false, PredefinedSymbol.Semicolon, PredefinedSymbol.Comma);
// TODO: check types, assign result to variable
}
}
private void VerifyModifiersAgainstType(ModifierTargets target)
{
CompilerUtils.VerifyModifiersAgainstType(target, _state.NextTokenModifiers);
}