private void AssertIsBool(ParserRuleContext ctx, object result)
{
if ((Type)result != typeof(bool))
{
throw ctx.Exception("Confition result of IF statement must be boolean.");
}
}
private Type GetOpType(ParserRuleContext ctx, Type t1, Type t2)
{
if (t1 == t2)
{
return(t1);
}
throw ctx.Exception("Cannot do operation between [{0}] and [{1}].", t1.Name, t2.Name);
}
private Type GetDeclType(ParserRuleContext context, string typeName)
{
switch (typeName)
{
case "decimal": return(typeof(decimal));
case "bool": return(typeof(bool));
case "string": return(typeof(string));
case "var": return(null);
}
throw context.Exception("Unknown type declare : [{0}]", typeName);
}
public static OpBuilder GetOpBuilder(Type type, ParserRuleContext ctx, IlBuilder builder)
{
if (type == typeof(bool))
{
return(new BooleanOpBuilder(ctx, builder));
}
else if (type == typeof(string))
{
return(new StringOpBuilder(ctx, builder));
}
else if (type == typeof(decimal))
{
return(new DecimalOpBuilder(ctx, builder));
}
throw ctx.Exception("Unspported operation.");
}
private bool ValueEquals(object a, object b, ParserRuleContext ctx)
{
if (a is bool && b is bool)
{
return((bool)a == (bool)b);
}
else if (a is decimal && b is decimal)
{
return((decimal)a == (decimal)b);
}
else if (a is string && b is string)
{
return((string)a == (string)b);
}
throw ctx.Exception("Cannot do operation between [{0}] and [{1}].", a.GetType().Name, b.GetType().Name);
}
protected virtual void CheckEq()
{
throw Ctx.Exception("Sytex error.");
}