/// <summary>
/// Generates code for a push statement for literal type
/// </summary>
/// <param name="litRecord"></param>
/// <param name="factorRecord"></param>
internal void GenerateLitPush(LiteralRecord litRecord, ref VariableType factorRecord)
{
cilOutput.WriteLine(" ldc.i4 " + litRecord.lexeme);
factorRecord = litRecord.type;
}
/// <summary>
/// Parse Factor
/// </summary>
/// <param name="factorRecord"></param>
private void Factor(ref VariableRecord factorRecord)
{
IdentifierRecord idRecord = new IdentifierRecord();
LiteralRecord litRecord = new LiteralRecord();
VariableType tempType = VariableType.Void;
List<Parameter> parameterList = new List<Parameter>();
MethodRecord methodRecord = new MethodRecord();
methodRecord.parameterList = new List<Parameter>();
string idRecName = null;
switch (lookAheadToken.tag)
{
case Tags.MP_INTEGER_LIT:
UsedRules.WriteLine("94");
litRecord.lexeme = lookAheadToken.lexeme;
litRecord.type = VariableType.Integer;
Match((int)Tags.MP_INTEGER_LIT);
analyzer.GenerateLitPush(litRecord, ref tempType);
factorRecord.variableType = tempType;
break;
case Tags.MP_NOT:
UsedRules.WriteLine("95");
Match((int)Tags.MP_NOT);
Factor(ref factorRecord);
break;
case Tags.MP_LPAREN:
UsedRules.WriteLine("96");
Match((int)Tags.MP_LPAREN);
Expression(ref factorRecord);
Match((int)Tags.MP_RPAREN);
break;
case Tags.MP_IDENTIFIER:
UsedRules.WriteLine("97");
Identifier(ref idRecName);
idRecord.lexeme = idRecName;
analyzer.ProcessId(ref idRecord);
analyzer.GenerateIdPush(idRecord, ref factorRecord);
analyzer.processParameters(idRecord,ref methodRecord,ref parameterList);
OptionalActualParameterList(parameterList);
analyzer.ProcessMethod(idRecord,ref methodRecord);
analyzer.GenerateCallMethod(methodRecord);
break;
default:
Error("Expecting Factor but found " + lookAheadToken.lexeme);
break;
}
}