private static void BuildScopesInFunctionParameters(
LexicalScope containingScope,
FunctionDeclarationSyntax function,
ExpressionLexicalScopesBuilder binder)
{
if (function.GenericParameters != null)
{
foreach (var parameter in function.GenericParameters)
{
binder.VisitExpression(parameter.TypeExpression, containingScope);
}
}
foreach (var parameter in function.Parameters)
{
switch (parameter)
{
case NamedParameterSyntax namedParameter:
binder.VisitExpression(namedParameter.TypeExpression, containingScope);
break;
case SelfParameterSyntax _:
case FieldParameterSyntax _:
// Nothing to bind
break;
default:
throw NonExhaustiveMatchException.For(parameter);
}
}
}
private static void BuildScopesInFunctionBody(
LexicalScope containingScope,
FunctionDeclarationSyntax function,
ExpressionLexicalScopesBuilder binder)
{
var symbols = new List <ISymbol>();
foreach (var parameter in function.Parameters)
{
symbols.Add(parameter);
}
containingScope = new NestedScope(containingScope, symbols, Enumerable.Empty <ISymbol>());
binder.VisitBlock(function.Body, containingScope);
}
private void BuildScopesInDeclaration(
LexicalScope containingScope,
DeclarationSyntax declaration)
{
var binder = new ExpressionLexicalScopesBuilder();
var diagnosticCount = diagnostics.Count;
switch (declaration)
{
case NamespaceDeclarationSyntax ns:
{
if (ns.InGlobalNamespace)
{
containingScope = globalScope;
}
containingScope = BuildNamespaceScopes(containingScope, ns.Name);
containingScope = BuildUsingDirectivesScope(containingScope, ns.UsingDirectives);
foreach (var nestedDeclaration in ns.Declarations)
{
BuildScopesInDeclaration(containingScope, nestedDeclaration);
}
}
break;
case NamedFunctionDeclarationSyntax function:
BuildScopesInFunctionParameters(containingScope, function, binder);
binder.VisitExpression(function.ReturnTypeExpression, containingScope);
BuildScopesInFunctionBody(containingScope, function, binder);
break;
case OperatorDeclarationSyntax operatorDeclaration:
BuildScopesInFunctionParameters(containingScope, operatorDeclaration, binder);
binder.VisitExpression(operatorDeclaration.ReturnTypeExpression, containingScope);
BuildScopesInFunctionBody(containingScope, operatorDeclaration, binder);
break;
case ConstructorDeclarationSyntax constructor:
BuildScopesInFunctionParameters(containingScope, constructor, binder);
BuildScopesInFunctionBody(containingScope, constructor, binder);
break;
case InitializerDeclarationSyntax initializer:
BuildScopesInFunctionParameters(containingScope, initializer, binder);
BuildScopesInFunctionBody(containingScope, initializer, binder);
break;
case TypeDeclarationSyntax typeDeclaration:
// TODO name scope for type declaration
foreach (var nestedDeclaration in typeDeclaration.Members)
{
BuildScopesInDeclaration(containingScope, nestedDeclaration);
}
break;
case FieldDeclarationSyntax fieldDeclaration:
binder.VisitExpression(fieldDeclaration.TypeExpression, containingScope);
binder.VisitExpression(fieldDeclaration.Initializer, containingScope);
break;
default:
throw NonExhaustiveMatchException.For(declaration);
}
if (diagnosticCount != diagnostics.Count)
{
declaration.Poison();
}
}