private static void AppendAllLoadedSyntaxTrees(
ArrayBuilder <SyntaxTree> treesBuilder,
SyntaxTree tree,
string scriptClassName,
SourceReferenceResolver resolver,
CommonMessageProvider messageProvider,
bool isSubmission,
IDictionary <SyntaxTree, int> ordinalMapBuilder,
IDictionary <SyntaxTree, ImmutableArray <LoadDirective> > loadDirectiveMapBuilder,
IDictionary <string, SyntaxTree> loadedSyntaxTreeMapBuilder,
IDictionary <SyntaxTree, Lazy <RootSingleNamespaceDeclaration> > declMapBuilder,
ref DeclarationTable declTable)
{
ArrayBuilder <LoadDirective> loadDirectives = null;
foreach (var directive in tree.GetCompilationUnitRoot().GetLoadDirectives())
{
var fileToken = directive.File;
var path = (string)fileToken.Value;
if (path == null)
{
// If there is no path, the parser should have some Diagnostics to report (if we're in an active region).
Debug.Assert(!directive.IsActive || tree.GetDiagnostics().Any(d => d.Severity == DiagnosticSeverity.Error));
continue;
}
var diagnostics = DiagnosticBag.GetInstance();
string resolvedFilePath = null;
if (resolver == null)
{
diagnostics.Add(
messageProvider.CreateDiagnostic(
(int)ErrorCode.ERR_SourceFileReferencesNotSupported,
directive.Location));
}
else
{
resolvedFilePath = resolver.ResolveReference(path, baseFilePath: tree.FilePath);
if (resolvedFilePath == null)
{
diagnostics.Add(
messageProvider.CreateDiagnostic(
(int)ErrorCode.ERR_NoSourceFile,
fileToken.GetLocation(),
path,
CSharpResources.CouldNotFindFile));
}
else if (!loadedSyntaxTreeMapBuilder.ContainsKey(resolvedFilePath))
{
try
{
var code = resolver.ReadText(resolvedFilePath);
var loadedTree = SyntaxFactory.ParseSyntaxTree(
code,
tree.Options, // Use ParseOptions propagated from "external" tree.
resolvedFilePath);
// All #load'ed trees should have unique path information.
loadedSyntaxTreeMapBuilder.Add(loadedTree.FilePath, loadedTree);
AppendAllSyntaxTrees(
treesBuilder,
loadedTree,
scriptClassName,
resolver,
messageProvider,
isSubmission,
ordinalMapBuilder,
loadDirectiveMapBuilder,
loadedSyntaxTreeMapBuilder,
declMapBuilder,
ref declTable);
}
catch (Exception e)
{
diagnostics.Add(
CommonCompiler.ToFileReadDiagnostics(messageProvider, e, resolvedFilePath),
fileToken.GetLocation());
}
}
else
{
// The path resolved, but we've seen this file before,
// so don't attempt to load it again.
Debug.Assert(diagnostics.IsEmptyWithoutResolution);
}
}
if (loadDirectives == null)
{
loadDirectives = ArrayBuilder <LoadDirective> .GetInstance();
}
loadDirectives.Add(new LoadDirective(resolvedFilePath, diagnostics.ToReadOnlyAndFree()));
}
if (loadDirectives != null)
{
loadDirectiveMapBuilder.Add(tree, loadDirectives.ToImmutableAndFree());
}
}