private void SetContext(TrimmedList <string> qualList, GMacSymbolTranslatorContext context, bool isLvalue, bool followScopeChain)
{
SetContext(context);
_isLValue = isLvalue;
_followScopeChain = followScopeChain;
_qualList = new TrimmedList <string>(qualList);
_generatedValueAccess = null;
}
/// <summary>
/// Read an identifier qualified list from the given parse tree node
/// </summary>
/// <param name="node"></param>
/// <returns></returns>
public static TrimmedList <string> Translate_Qualified_Identifier(ParseTreeNode node)
{
node.Assert(GMacParseNodeNames.QualifiedIdentifier);
var identList = new TrimmedList <string>(
node.ChildNodes.Select(Translate_Identifier)
);
identList.ResetActiveRange();
return(identList);
}
public static LanguageSymbol Translate_Direct(GMacSymbolTranslatorContext context, ParseTreeNode node, TrimmedList <string> qualList)
{
var valAccess = Translate(context, node, false, qualList);
return
(valAccess.IsFullAccess
? valAccess.RootSymbol
: context.CompilationLog.RaiseGeneratorError <LanguageSymbol>("Expecting a direct r-value", node));
}
//public static bool TryTranslate_LValue(GMacSymbolTranslatorContext context, ParseTreeNode node, out LanguageValueAccess varAccess)
//{
// var qualList = GenUtils.Translate_Qualified_Identifier(node);
// LanguageSymbol symbol;
// var flag =
// context
// .OpenedDistinctScopes()
// .LookupSymbol(qualList.FirstItem, out symbol);
// if (flag == false || (symbol is SymbolLValue) == false)
// {
// varAccess = null;
// return false;
// }
// varAccess = LanguageValueAccess.Create(symbol);
// return true;
//}
public static LanguageValueAccess Translate(GMacSymbolTranslatorContext context, ParseTreeNode node, bool isLvalue, TrimmedList <string> qualList)
{
context.PushState(node);
var translator = new GMacValueAccessGenerator();//new GMacValueAccessGenerator(qualList, context, isLvalue, true);
translator.SetContext(qualList, context, isLvalue, true);
translator.Translate();
context.PopState();
var result = translator._generatedValueAccess;
//MasterPool.Release(translator);
return(result);
}
private LanguageValueAccess translate_Qualified_Identifier(ParseTreeNode node)
{
//If _QualList is not already filled, translate the current parse node into a list of identifiers
if (_qualList == null)
{
_qualList = GenUtils.Translate_Qualified_Identifier(node);
}
//Lookup the first item of the translated list of identifiers within the current context
LanguageSymbol symbol;
var flag =
_followScopeChain
//? Context.LookupSymbolInOpenedDistinctScopes(_qualList.FirstItem, out symbol)
? Context.OpenedDistinctScopes().LookupSymbol(_qualList.FirstItem, out symbol)
: Context.ActiveParentScope.LookupSymbol(_qualList.FirstItem, out symbol);
if (flag == false)
{
return(CompilationLog.RaiseGeneratorError <LanguageValueAccess>("Symbol name not recognized", RootParseNode));
}
//Ignore the first item from the list
_qualList.IncreaseActiveStartOffset(1);
if (_isLValue)
{
//This is an l-value
switch (symbol.SymbolRoleName)
{
case RoleNames.StructureDataMember:
case RoleNames.MacroParameter:
case RoleNames.LocalVariable:
return(translate_StartAt_DataSymbol((SymbolDataStore)symbol));
default:
return(CompilationLog.RaiseGeneratorError <LanguageValueAccess>("LValue symbol name not recognized", RootParseNode));
}
}
//This is an r-value
switch (symbol.SymbolRoleName)
{
case RoleNames.MacroParameter:
case RoleNames.LocalVariable:
case RoleNames.Constant:
return(translate_StartAt_DataSymbol((SymbolDataStore)symbol));
case RoleNames.FrameBasisVector:
case RoleNames.BuiltinType:
case RoleNames.FrameMultivector:
case RoleNames.Structure:
case RoleNames.Macro:
case RoleNames.MacroTemplate:
case RoleNames.Transform:
case RoleNames.FrameSubspace:
//case RoleNames.Binding:
return(translate_StartAt_DirectSymbol(symbol));
case RoleNames.Frame:
return(translate_StartAt_FrameDefinition((GMacFrame)symbol));
case RoleNames.Namespace:
return(translate_StartAt_NamespaceDefinition((GMacNamespace)symbol));
default:
return(CompilationLog.RaiseGeneratorError <LanguageValueAccess>("RValue symbol name not recognized", RootParseNode));
}
}