Task <Module[]> AnalyzeSource(Parse.Syntax.Source sourceNode, CancellationToken cancel)
{
var nodesAndModules = new List <Tuple <Parse.Syntax.Module, Module> >();
// collect top-level modules
var triviaNodes = new List <Parse.Syntax.Node>();
Module curModule = null;
Parse.Syntax.Module moduleNode = null;
foreach (var node in sourceNode.Children)
{
if (cancel.IsCancellationRequested)
{
throw new OperationCanceledException(cancel);
}
if ((moduleNode = node as Parse.Syntax.Module) != null)
{
// look for existing module
var moduleName = new QualifiedName
{
Qualifiers = moduleNode.Qualifiers.Select(id => id.Text),
Name = moduleNode.Name.Text
};
lock (Unit.Modules)
{
if (!Unit.Modules.TryGetValue(moduleName, out curModule))
{
curModule = new Module {
Name = moduleName
};
Unit.Modules.Add(curModule.Name, curModule);
}
foreach (var tn in triviaNodes)
{
curModule.PreTrivia.Add(tn);
}
triviaNodes.Clear();
}
nodesAndModules.Add(Tuple.Create(moduleNode, curModule));
}
else if (node is Parse.Syntax.Directive)
{
throw new NotImplementedException();
}
else if (node is Parse.Syntax.Space)
{
triviaNodes.Add(node);
}
else
{
Unit.AddError(new AnalyzerError
{
ErrorNode = node,
Message = string.Format(ErrorMessages.E_0011_Analyzer_InvalidToplevelItem, ApteridError.Truncate(node.Text)),
});
}
}
if (curModule != null)
{
foreach (var tn in triviaNodes)
{
curModule.PostTrivia.Add(tn);
}
}
// analyze
var tasks = nodesAndModules.Select(mm => AnalyzeModule(mm.Item1, mm.Item2, cancel));
return(Task.WhenAll(tasks));
}
Task <Module> AnalyzeModule(Parse.Syntax.Module moduleNode, Module module, CancellationToken cancel)
{
var bindings = new List <Tuple <Parse.Syntax.Binding, Binding> >();
// collect module bindings
var triviaNodes = new List <Parse.Syntax.Node>();
Binding curBinding = null;
Parse.Syntax.Binding bindingNode = null;
foreach (var node in moduleNode.Body)
{
if (cancel.IsCancellationRequested)
{
throw new OperationCanceledException(cancel);
}
if ((bindingNode = node as Parse.Syntax.Binding) != null)
{
var bindingName = new QualifiedName(module, bindingNode.Name.Text);
lock (module.Bindings)
{
if (module.Bindings.TryGetValue(bindingName, out curBinding))
{
Unit.AddError(new AnalyzerError
{
ErrorNode = node,
Message = string.Format(ErrorMessages.E_0012_Analyzer_DuplicateBinding, bindingName.Name),
});
}
else
{
curBinding = new Binding {
Parent = module, Name = bindingName, SyntaxNode = bindingNode
};
bindings.Add(Tuple.Create(bindingNode, curBinding));
module.Bindings.Add(curBinding.Name, curBinding);
}
foreach (var tn in triviaNodes)
{
curBinding.PreTrivia.Add(tn);
}
triviaNodes.Clear();
}
}
else if (node is Parse.Syntax.Space)
{
triviaNodes.Add(node);
}
else
{
Unit.AddError(new AnalyzerError
{
ErrorNode = node,
Message = string.Format(ErrorMessages.E_0013_Analyzer_InvalidScopeItem, ApteridError.Truncate(node.Text)),
});
}
}
if (curBinding != null)
{
foreach (var tn in triviaNodes)
{
curBinding.PostTrivia.Add(tn);
}
}
// analyze
var tasks = bindings.Select(bb => Task.Factory.StartNew(() => AnalyzeBinding(module, bb.Item1, bb.Item2, cancel), TaskCreationOptions.AttachedToParent));
return(Task.WhenAll(tasks).ContinueWith(t => module));
}
void ResolveTypes(IEnumerable <Module> modules, CancellationToken cancel)
{
var trr = new TypeResolveRec
{
Constraint = s => new[] { s }, // true
ExpTypeVars = Enumerable.Empty <Tuple <Expression, Var> >(),
};
trr = modules.Aggregate(trr, (mtr, m) =>
{
if (cancel.IsCancellationRequested)
{
throw new OperationCanceledException(cancel);
}
return(m.Bindings.Values.Aggregate(mtr, (btr, b) =>
{
if (cancel.IsCancellationRequested)
{
throw new OperationCanceledException(cancel);
}
return ResolveExpressionType(btr, b.Expression);
}));
});
try
{
var varTypes = Goal.Eval(trr.Constraint).First();
foreach (var expVar in trr.ExpTypeVars)
{
var e = expVar.Item1;
var v = expVar.Item2;
if (varTypes.Binds(v))
{
e.ResolvedType = varTypes[v];
}
else
{
Unit.AddError(new AnalyzerError
{
ErrorNode = e.SyntaxNode,
Message = string.Format(ErrorMessages.E_0015_Analyzer_UnableToInferType, ApteridError.Truncate(e.SyntaxNode.Text)),
});
}
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception e)
{
Unit.AddError(new AnalyzerError {
Exception = e
});
}
}
void GenerateLiteralBinding(GenerateTypeInfo typeInfo, Analyze.Binding binding, Analyze.Expressions.Literal literal)
{
if (literal.ResolvedType == null)
{
Unit.AddError(new GeneratorError
{
Message = string.Format(ErrorMessages.E_0017_Generator_UnresolvedType, ApteridError.Truncate(literal.SyntaxNode.Text)),
ErrorNode = literal.SyntaxNode
});
return;
}
var atts = FieldAttributes.Static | FieldAttributes.InitOnly;
atts |= binding.IsPublic ? FieldAttributes.Public : FieldAttributes.Private;
var field = typeInfo.TypeBuilder.DefineField(binding.Name.Name, literal.ResolvedType.CLRType, atts);
typeInfo.Bindings.Add(literal, field);
if (literal.Value == null)
{
if (field.FieldType.IsValueType)
{
field.SetConstant(Activator.CreateInstance(field.FieldType));
}
else
{
field.SetConstant(null);
}
}
else
{
typeInfo.StaticFieldsToInit.Add(new FieldInitInfo
{
Node = binding.SyntaxNode,
Field = field,
GenLoad = il => GenerateLoadLiteral(il, literal, field.FieldType)
});
}
}