/// <summary>
/// Parser function that generates function call quadruples.
/// While checking semantics.
/// </summary>
void CallFunction()
{
Expect((int)TokenEnum.Function);
Expect((int)TokenEnum.Id);
string id = GetLastTokenValue();
Expect((int)TokenEnum.LeftParenthesis);
VariableBlock parameters = new VariableBlock();
if (StartOf((int)TokenEnum.String))
{
Expression();
string paramId = Quadruple.operandStack.Pop();
GraphicFooType type = Quadruple.typeStack.Pop();
Variable parameter = new Variable(paramId, type);
if (parameter.type == GraphicFooType.Invalid)
{
SemErr((int)SemanticEnum.Variable);
}
parameters.AddVariable(parameter);
while (la.kind == (int)TokenEnum.Comma)
{
Get();
Expression();
paramId = Quadruple.operandStack.Pop();
type = Quadruple.typeStack.Pop();
parameter = new Variable(paramId, type);
if (parameter.type == GraphicFooType.Invalid)
{
SemErr((int)SemanticEnum.Variable);
}
parameters.AddVariable(parameter);
}
}
Expect((int)TokenEnum.RightParenthesis);
Quadruple.CreateFunctionCallQuadruples(id, parameters);
if (la.kind == (int)TokenEnum.Assignation)
{
Get();
Expect((int)TokenEnum.Id);
string varId = GetLastTokenValue();
Quadruple.CreateReturnAssignationQuadruple(id, varId);
}
Expect((int)TokenEnum.Semicolon);
}
