C# PEModuleBuilder.TryGetDebugDocumentForNormalizedPath方法代码示例

        private static void AddDebugSourceDocumentsForChecksumDirectives(
            PEModuleBuilder moduleBeingBuilt,
            SyntaxTree tree,
            DiagnosticBag diagnostics)
        {
            var checksumDirectives = tree.GetRoot().GetDirectives(d => d.Kind == SyntaxKind.PragmaChecksumDirectiveTrivia &&
                                                                 !d.ContainsDiagnostics);

            foreach (var directive in checksumDirectives)
            {
                var checkSumDirective = (PragmaChecksumDirectiveTriviaSyntax)directive;
                var path = checkSumDirective.File.ValueText;

                var checkSumText = checkSumDirective.Bytes.ValueText;
                var normalizedPath = moduleBeingBuilt.NormalizeDebugDocumentPath(path, basePath: tree.FilePath);
                var existingDoc = moduleBeingBuilt.TryGetDebugDocumentForNormalizedPath(normalizedPath);

                // duplicate checksum pragmas are valid as long as values match
                // if we have seen this document already, check for matching values.
                if (existingDoc != null)
                {
                    // pragma matches a file path on an actual tree.
                    // Dev12 compiler just ignores the pragma in this case which means that
                    // checksum of the actual tree always wins and no warning is given.
                    // We will continue doing the same.
                    if (existingDoc.IsComputedChecksum)
                    {
                        continue;
                    }

                    if (CheckSumMatches(checkSumText, existingDoc.SourceHash))
                    {
                        var guid = Guid.Parse(checkSumDirective.Guid.ValueText);
                        if (guid == existingDoc.SourceHashKind)
                        {
                            // all parts match, nothing to do
                            continue;
                        }
                    }

                    // did not match to an existing document
                    // produce a warning and ignore the pragma
                    diagnostics.Add(ErrorCode.WRN_ConflictingChecksum, new SourceLocation(checkSumDirective), path);
                }
                else
                {
                    var newDocument = new Cci.DebugSourceDocument(
                        normalizedPath,
                        Cci.DebugSourceDocument.CorSymLanguageTypeCSharp,
                        MakeCheckSumBytes(checkSumDirective.Bytes.ValueText),
                        Guid.Parse(checkSumDirective.Guid.ValueText));

                    moduleBeingBuilt.AddDebugDocument(newDocument);
                }
            }
        }

        // TODO: consider unifying with VB
        private bool StartSourceChecksumCalculation(PEModuleBuilder moduleBeingBuilt, DiagnosticBag diagnostics)
        {
            // Check that all syntax trees are debuggable:
            bool allTreesDebuggable = true;
            foreach (var tree in this.syntaxTrees)
            {
                if (!string.IsNullOrEmpty(tree.FilePath) && tree.GetText().Encoding == null)
                {
                    diagnostics.Add(ErrorCode.ERR_EncodinglessSyntaxTree, tree.GetRoot().GetLocation());
                    allTreesDebuggable = false;
                }
            }

            if (!allTreesDebuggable)
            {
                return false;
            }

            // Add debug documents for all trees with distinct paths.
            foreach (var tree in this.syntaxTrees)
            {
                if (!string.IsNullOrEmpty(tree.FilePath))
                {
                    // compilation does not guarantee that all trees will have distinct paths.
                    // Do not attempt adding a document for a particular path if we already added one.
                    string normalizedPath = moduleBeingBuilt.NormalizeDebugDocumentPath(tree.FilePath, basePath: null);
                    var existingDoc = moduleBeingBuilt.TryGetDebugDocumentForNormalizedPath(normalizedPath);
                    if (existingDoc == null)
                    {
                        moduleBeingBuilt.AddDebugDocument(MakeDebugSourceDocumentForTree(normalizedPath, tree));
                    }
                }
            }

            // Add debug documents for all pragmas. 
            // If there are clashes with already processed directives, report warnings.
            // If there are clashes with debug documents that came from actual trees, ignore the pragma.
            foreach (var tree in this.syntaxTrees)
            {
                AddDebugSourceDocumentsForChecksumDirectives(moduleBeingBuilt, tree, diagnostics);
            }

            return true;
        }