/// <summary>
/// Walks the supplied System.CodeDom.CodeCompileUnit and produces a corresponding CompilationUnit.
/// Enters declarations into the supplied Module and errors into the supplied ErrorNodeList.
/// Calls back to the supplied compiler to resolve assembly references and to create appropriate documents for code snippets.
/// </summary>
/// <param name="compiler">Called upon to resolve assembly references and to create Documents for snippets.</param>
/// <param name="compilationUnit">The root of the CodeDOM tree to be translated into an IR CompileUnit.</param>
/// <param name="targetModule">The module or assembly to which the compilation unit will be compiled.</param>
/// <param name="errorNodes">Errors in the CodeDOM tree that are found during translation are added to this list.</param>
/// <returns></returns>
public CompilationUnit Translate(Compiler compiler, CodeCompileUnit compilationUnit, Module targetModule, ErrorNodeList errorNodes){
Debug.Assert(compiler != null);
Debug.Assert(compilationUnit != null);
Debug.Assert(targetModule != null);
Debug.Assert(errorNodes != null);
this.compiler = compiler;
this.errorNodes = errorNodes;
this.targetModule = targetModule;
CodeSnippetCompileUnit cscu = compilationUnit as CodeSnippetCompileUnit;
CompilationUnit cunit = cscu != null ? new CompilationUnitSnippet() : new CompilationUnit();
this.Translate(compilationUnit.AssemblyCustomAttributes, targetModule.Attributes);
StringCollection references = compilationUnit.ReferencedAssemblies;
if (references != null && references.Count > 0){
AssemblyReferenceList arefs = targetModule.AssemblyReferences;
TrivialHashtable alreadyReferencedAssemblies = new TrivialHashtable();
for (int i = 0, n = arefs.Count; i < n; i++)
alreadyReferencedAssemblies[arefs[i].Assembly.UniqueKey] = this;
foreach (string rAssemblyName in references)
compiler.AddAssemblyReferenceToModule(null, targetModule, rAssemblyName, null, errorNodes, alreadyReferencedAssemblies, false);
}
Namespace defaultNamespace = new Namespace(Identifier.Empty, Identifier.Empty, null, null, new NamespaceList(), null);
NamespaceList nspaceList = defaultNamespace.NestedNamespaces;
CodeNamespaceCollection nspaces = compilationUnit.Namespaces;
if (nspaces != null)
foreach (CodeNamespace cns in nspaces)
nspaceList.Add(this.Translate(cns));
if (cscu == null) return cunit;
Document doc = null;
if (cscu.LinePragma == null)
doc = compiler.CreateDocument(targetModule.Name, 1, cscu.Value);
else{
doc = compiler.CreateDocument(cscu.LinePragma.FileName, cscu.LinePragma.LineNumber, cscu.Value);
cunit.Name = Identifier.For(cscu.LinePragma.FileName);
}
cunit.SourceContext = new SourceContext(doc);
defaultNamespace.SourceContext = cunit.SourceContext;
return cunit;
}
public override void ParseAndAnalyzeCompilationUnit(string fname, string text, int line, int col, ErrorNodeList errors, Compilation compilation, AuthoringSink sink) {
if (fname == null || text == null || errors == null || compilation == null){Debug.Assert(false); return;}
if (compilation != null && compilation.CompilerParameters is SpecSharpCompilerOptions)
this.allowSpecSharpExtensions = !((SpecSharpCompilerOptions)compilation.CompilerParameters).Compatibility;
CompilationUnitList compilationUnitSnippets = compilation.CompilationUnits;
if (compilationUnitSnippets == null){Debug.Assert(false); return;}
//Fix up the CompilationUnitSnippet corresponding to fname with the new source text
CompilationUnitSnippet cuSnippet = this.GetCompilationUnitSnippet(compilation, fname);
if (cuSnippet == null) return;
Compiler compiler = new Compiler();
compiler.CurrentCompilation = compilation;
cuSnippet.SourceContext.Document = compiler.CreateDocument(fname, 1, new DocumentText(text));
cuSnippet.SourceContext.EndPos = text.Length;
//Parse all of the compilation unit snippets
Module symbolTable = compilation.TargetModule = compiler.CreateModule(compilation.CompilerParameters, errors);
AttributeList assemblyAttributes = symbolTable is AssemblyNode ? symbolTable.Attributes : null;
AttributeList moduleAttributes = symbolTable is AssemblyNode ? ((AssemblyNode)symbolTable).ModuleAttributes : symbolTable.Attributes;
int n = compilationUnitSnippets.Count;
for (int i = 0; i < n; i++){
CompilationUnitSnippet compilationUnitSnippet = compilationUnitSnippets[i] as CompilationUnitSnippet;
if (compilationUnitSnippet == null){Debug.Assert(false); continue;}
Document doc = compilationUnitSnippet.SourceContext.Document;
doc = compilationUnitSnippet.SourceContext.Document;
if (doc == null || doc.Text == null){Debug.Assert(false); continue;}
IParserFactory factory = compilationUnitSnippet.ParserFactory;
if (factory == null) continue;
compilationUnitSnippet.Nodes = null;
compilationUnitSnippet.PreprocessorDefinedSymbols = null;
IParser p = factory.CreateParser(doc.Name, doc.LineNumber, doc.Text, symbolTable, compilationUnitSnippet == cuSnippet ? errors : new ErrorNodeList(), compilation.CompilerParameters);
if (p == null){Debug.Assert(false); continue;}
if (p is ResgenCompilerStub) continue;
Parser specSharpParser = p as Parser;
if (specSharpParser == null)
p.ParseCompilationUnit(compilationUnitSnippet);
else
specSharpParser.ParseCompilationUnit(compilationUnitSnippet, compilationUnitSnippet != cuSnippet, false);
//TODO: this following is a good idea only if the files will not be frequently reparsed from source
//StringSourceText stringSourceText = doc.Text.TextProvider as StringSourceText;
//if (stringSourceText != null && stringSourceText.IsSameAsFileContents)
// doc.Text.TextProvider = new CollectibleSourceText(doc.Name, doc.Text.Length);
}
//Construct symbol table for entire project
ErrorHandler errorHandler = new ErrorHandler(errors);
SpecSharpCompilation ssCompilation = new SpecSharpCompilation();
TrivialHashtable ambiguousTypes = new TrivialHashtable();
TrivialHashtable referencedLabels = new TrivialHashtable();
TrivialHashtable scopeFor = this.scopeFor = new TrivialHashtable();
Scoper scoper = new Scoper(scopeFor);
scoper.currentModule = symbolTable;
Looker symLooker = new Looker(null, new ErrorHandler(new ErrorNodeList(0)), scopeFor, ambiguousTypes, referencedLabels);
symLooker.currentAssembly = (symLooker.currentModule = symbolTable) as AssemblyNode;
Looker looker = new Looker(null, errorHandler, scopeFor, ambiguousTypes, referencedLabels);
looker.currentAssembly = (looker.currentModule = symbolTable) as AssemblyNode;
looker.VisitAttributeList(assemblyAttributes);
bool dummyCompilation = compilation.CompilerParameters is SpecSharpCompilerOptions && ((SpecSharpCompilerOptions)compilation.CompilerParameters).DummyCompilation;
if (dummyCompilation){
//This happens when there is no project. In this case, semantic errors should be ignored since the references and options are unknown.
//But proceed with the full analysis anyway so that some measure of Intellisense can still be provided.
errorHandler.Errors = new ErrorNodeList(0);
}
for (int i = 0; i < n; i++){
CompilationUnit cUnit = compilationUnitSnippets[i];
scoper.VisitCompilationUnit(cUnit);
}
for (int i = 0; i < n; i++){
CompilationUnit cUnit = compilationUnitSnippets[i];
if (cUnit == cuSnippet)
looker.VisitCompilationUnit(cUnit); //Uses real error message list and populate the identifier info lists
else
symLooker.VisitCompilationUnit(cUnit); //Errors are discarded
}
//Run resolver over symbol table so that custom attributes on member signatures are known and can be used
//to error check the the given file.
TypeSystem typeSystem = new TypeSystem(errorHandler);
Resolver resolver = new Resolver(errorHandler, typeSystem);
resolver.currentAssembly = (resolver.currentModule = symbolTable) as AssemblyNode;
Resolver symResolver = new Resolver(new ErrorHandler(new ErrorNodeList(0)), typeSystem);
symResolver.currentAssembly = resolver.currentAssembly;
symResolver.VisitAttributeList(assemblyAttributes);
for (int i = 0; i < n; i++) {
CompilationUnit cUnit = compilationUnitSnippets[i];
if (cUnit == cuSnippet)
resolver.VisitCompilationUnit(cUnit); //Uses real error message list and populate the identifier info lists
else
symResolver.VisitCompilationUnit(cUnit); //Errors are discarded
}
if (dummyCompilation) return;
//Now analyze the given file for errors
Checker checker = new Checker(ssCompilation, errorHandler, typeSystem, scopeFor, ambiguousTypes, referencedLabels);
checker.currentAssembly = (checker.currentModule = symbolTable) as AssemblyNode;
checker.VisitAttributeList(assemblyAttributes, checker.currentAssembly);
checker.VisitModuleAttributes(moduleAttributes);
checker.VisitCompilationUnit(cuSnippet);
MemberFinder finder = new MemberFinder(line, col);
finder.VisitCompilationUnit(cuSnippet);
Node node = finder.Member;
if (node == null){
if (line == 0 && col == 0)
node = cuSnippet;
else
return;
}
SpecSharpCompilerOptions options = (SpecSharpCompilerOptions) compilation.CompilerParameters;
if (options.IsContractAssembly) return;
ssCompilation.RunPlugins(node, errorHandler);
Normalizer normalizer = new Normalizer(typeSystem);
normalizer.Visit(node);
Analyzer analyzer = new Analyzer(typeSystem, compilation);
analyzer.Visit(node);
if (options.RunProgramVerifierWhileEditing)
ssCompilation.AddProgramVerifierPlugin(typeSystem, compilation);
ssCompilation.analyzer = analyzer; // make the analyzer available to plugins for access to method CFGs
ssCompilation.RunPlugins(node, errorHandler);
ssCompilation.analyzer = null;
analyzer = null;
}