private IRValue ASTValueToIR(IRRule rule, ASTRValue astValue)
{
if (astValue is ASTConstantValue)
{
return(ASTConstantToIR(astValue as ASTConstantValue));
}
else if (astValue is ASTLocalVar)
{
var astVar = astValue as ASTLocalVar;
// TODO - compiler error if type resolution fails
var type = astVar.Type != null?Context.LookupType(astVar.Type) : null;
var ruleVar = rule.FindOrAddVariable(astVar.Name, type);
return(new IRVariable
{
Index = ruleVar.Index,
Type = type,
Location = astValue.Location
});
}
else
{
throw new InvalidOperationException("Cannot convert unknown AST value type to IR");
}
}
private IRValue ASTValueToIR(IRRule rule, ASTRValue astValue)
{
if (astValue is ASTConstantValue)
{
return(ASTConstantToIR(astValue as ASTConstantValue));
}
else if (astValue is ASTLocalVar)
{
var astVar = astValue as ASTLocalVar;
// TODO - compiler error if type resolution fails
ValueType type;
if (astVar.Type != null)
{
type = Context.LookupType(astVar.Type);
if (type == null)
{
Context.Log.Error(astVar.Location, DiagnosticCode.UnresolvedType,
String.Format("Type \"{0}\" does not exist", astVar.Type));
}
}
else
{
type = null;
}
var ruleVar = rule.FindOrAddVariable(astVar.Name, type);
return(new IRVariable
{
Index = ruleVar.Index,
Type = type,
Location = astValue.Location
});
}
else
{
throw new InvalidOperationException("Cannot convert unknown AST value type to IR");
}
}
