private void AnalysePrimaryExpression(PrimaryExpression expression, string type)
{
if (expression is IdentifierPE)
{
IdentifierPE identifierPe = (IdentifierPE)expression;
variableExists(identifierPe);
CheckType(type, identifierPe);
return;
}
if (expression is BracketsPE)
{
BracketsPE bracketsPe = (BracketsPE)expression;
AnalysePrimaryExpression(bracketsPe.GetExpression.getP1, type);
AnalysePrimaryExpression(bracketsPe.GetExpression.getP2, type);
AnalyzeOperator(bracketsPe.GetExpression.GetOperator(), type);
return;
}
if (expression is ConditionPE)
{
ConditionPE conditionPe = (ConditionPE)expression;
variableExists(conditionPe);
if (type != "boolean")
{
logCError(expression, "Boolean illegal in: " + type + "");
}
}
}
private PrimaryExpression parsePrimary()
{
PrimaryExpression PE;
if (CurrentToken == null)
{
return(null);
}
switch (CurrentToken.getType())
{
// case _condition:
case _identifier:
var Id = parseIdentifier();
PE = new IdentifierPE(prevLine, Id);
break;
case _lPar:
nextToken();
PE = new BracketsPE(prevLine, parseExpression());
accept(_rPar);
break;
case _condition:
var C = parseCondition();
PE = new ConditionPE(prevLine, C);
break;
case _literalString:
var S = parseLiteral();
PE = new LiteralString(prevLine, S);
break;
case _literalInt:
var I = parseLiteral();
PE = new LiteralString(prevLine, I);
break;
default:
logError(CurrentToken, "Syntax Error in Primary");
PE = null;
break;
}
return(PE);
}
private PrimaryExpression getFirstPrimaryExpression(AST ast)
{
if (ast is IdentifierPE || ast is ConditionPE || ast is LiteralPE)
{
return((PrimaryExpression)ast);
}
if (ast is BracketsPE)
{
BracketsPE bracketsPe = (BracketsPE)ast;
return(getFirstPrimaryExpression(bracketsPe.GetExpression.getP1));
}
if (ast is Expression)
{
return(getFirstPrimaryExpression(((Expression)ast).getP1));
}
return(null);
}