//
// Authors:
// Miguel de Icaza (miguel@gnome.org)
+// Marek Safar (marek.safar@gmail.com)
//
// Dual licensed under the terms of the MIT X11 or GNU GPL
//
// Copyright 2001, 2002, 2003 Ximian, Inc (http://www.ximian.com)
-// Copyright 2004, 2005, 2006, 2007, 2008 Novell, Inc
+// Copyright 2004-2011 Novell, Inc
//
+
using System;
using System.Threading;
-using System.Collections;
+using System.Collections.Generic;
using System.Reflection;
using System.Reflection.Emit;
using System.IO;
-using System.Globalization;
using System.Text;
+using System.Linq;
-namespace Mono.CSharp {
+namespace Mono.CSharp
+{
/// <summary>
/// Evaluator: provides an API to evaluate C# statements and
}
static object evaluator_lock = new object ();
+ static volatile bool invoking;
- static string current_debug_name;
static int count;
static Thread invoke_thread;
-
- static ArrayList using_alias_list = new ArrayList ();
- internal static ArrayList using_list = new ArrayList ();
- static Hashtable fields = new Hashtable ();
- static Type interactive_base_class = typeof (InteractiveBase);
- static Driver driver;
- static bool inited;
+ readonly Dictionary<string, Tuple<FieldSpec, FieldInfo>> fields;
- static CompilerContext ctx;
-
- public static TextWriter MessageOutput = Console.Out;
+ Type base_class;
+ bool inited;
+ int startup_files;
- /// <summary>
- /// Optional initialization for the Evaluator.
- /// </summary>
- /// <remarks>
- /// Initializes the Evaluator with the command line options
- /// that would be processed by the command line compiler. Only
- /// the first call to Init will work, any future invocations are
- /// ignored.
- ///
- /// You can safely avoid calling this method if your application
- /// does not need any of the features exposed by the command line
- /// interface.
- /// </remarks>
- public static void Init (string [] args)
+ readonly CompilerContext ctx;
+ readonly ModuleContainer module;
+ readonly ReflectionImporter importer;
+ readonly CompilationSourceFile source_file;
+
+ public Evaluator (CompilerSettings settings, Report report)
{
- InitAndGetStartupFiles (args);
- }
+ ctx = new CompilerContext (settings, report);
+ module = new ModuleContainer (ctx);
+ module.Evaluator = this;
- /// <summary>
- /// Optional initialization for the Evaluator.
- /// </summary>
- /// <remarks>
- /// Initializes the Evaluator with the command line
- /// options that would be processed by the command
- /// line compiler. Only the first call to
- /// InitAndGetStartupFiles or Init will work, any future
- /// invocations are ignored.
- ///
- /// You can safely avoid calling this method if your application
- /// does not need any of the features exposed by the command line
- /// interface.
- ///
- /// This method return an array of strings that contains any
- /// files that were specified in `args'.
- /// </remarks>
- public static string [] InitAndGetStartupFiles (string [] args)
+ source_file = new CompilationSourceFile ("{interactive}", "", 1);
+ source_file.NamespaceContainer = new NamespaceContainer (null, module, null, source_file);
+
+ startup_files = ctx.SourceFiles.Count;
+ ctx.SourceFiles.Add (source_file);
+
+ // FIXME: Importer needs this assembly for internalsvisibleto
+ module.SetDeclaringAssembly (new AssemblyDefinitionDynamic (module, "evaluator"));
+ importer = new ReflectionImporter (module, ctx.BuiltinTypes);
+
+ InteractiveBaseClass = typeof (InteractiveBase);
+ fields = new Dictionary<string, Tuple<FieldSpec, FieldInfo>> ();
+ }
+
+ void Init ()
{
- lock (evaluator_lock){
- if (inited)
- return new string [0];
-
- driver = Driver.Create (args, false, new ConsoleReportPrinter ());
- if (driver == null)
- throw new Exception ("Failed to create compiler driver with the given arguments");
+ var loader = new DynamicLoader (importer, ctx);
- RootContext.ToplevelTypes = new ModuleCompiled (ctx, true);
-
- driver.ProcessDefaultConfig ();
+ CompilerCallableEntryPoint.Reset ();
+ RootContext.ToplevelTypes = module;
- ArrayList startup_files = new ArrayList ();
- foreach (CompilationUnit file in Location.SourceFiles)
- startup_files.Add (file.Path);
-
- CompilerCallableEntryPoint.Reset ();
- RootContext.ToplevelTypes = new ModuleCompiled (ctx, true);
+ //var startup_files = new List<string> ();
+ //foreach (CompilationUnit file in Location.SourceFiles)
+ // startup_files.Add (file.Path);
- driver.LoadReferences ();
- RootContext.EvalMode = true;
- inited = true;
+ loader.LoadReferences (module);
+ ctx.BuiltinTypes.CheckDefinitions (module);
+ module.InitializePredefinedTypes ();
- return (string []) startup_files.ToArray (typeof (string));
- }
+ inited = true;
}
- static void Init ()
+ void ParseStartupFiles ()
{
- Init (new string [0]);
+ Driver d = new Driver (ctx);
+
+ Location.Initialize (ctx.SourceFiles);
+
+ for (int i = 0; i < startup_files; ++i) {
+ var sf = ctx.Settings.SourceFiles [i];
+ d.Parse (sf, module);
+ }
}
-
- static void Reset ()
+
+ void Reset ()
{
CompilerCallableEntryPoint.PartialReset ();
- // Workaround for API limitation where full message printer cannot be passed
- ReportPrinter printer = MessageOutput == Console.Out || MessageOutput == Console.Error ?
- new ConsoleReportPrinter (MessageOutput) :
- new StreamReportPrinter (MessageOutput);
-
- ctx = new CompilerContext (new Report (printer));
- RootContext.ToplevelTypes = new ModuleCompiled (ctx, true);
-
- //
- // PartialReset should not reset the core types, this is very redundant.
- //
- if (!TypeManager.InitCoreTypes (ctx))
- throw new Exception ("Failed to InitCoreTypes");
- TypeManager.InitOptionalCoreTypes (ctx);
-
- Location.AddFile (null, "{interactive}");
- Location.Initialize ();
-
- current_debug_name = "interactive" + (count++) + ".dll";
- if (Environment.GetEnvironmentVariable ("SAVE") != null){
- CodeGen.Init (current_debug_name, current_debug_name, false, ctx);
- } else
- CodeGen.InitDynamic (ctx, current_debug_name);
+ Location.Reset ();
+ Location.Initialize (ctx.SourceFiles);
}
+ /// <summary>
+ /// If true, turns type expressions into valid expressions
+ /// and calls the describe method on it
+ /// </summary>
+ public bool DescribeTypeExpressions;
+
/// <summary>
/// The base class for the classes that host the user generated code
/// </summary>
/// base class and the static members that are
/// available to your evaluated code.
/// </remarks>
- static public Type InteractiveBaseClass {
+ public Type InteractiveBaseClass {
get {
- return interactive_base_class;
+ return base_class;
}
-
set {
- if (value == null)
- throw new ArgumentNullException ();
+ base_class = value;
- lock (evaluator_lock)
- interactive_base_class = value;
+ if (value != null && typeof (InteractiveBase).IsAssignableFrom (value))
+ InteractiveBase.Evaluator = this;
}
}
/// <remarks>
/// Use this method to interrupt long-running invocations.
/// </remarks>
- public static void Interrupt ()
+ public void Interrupt ()
{
if (!inited || !invoking)
return;
/// compiled parameter will be set to the delegate
/// that can be invoked to execute the code.
///
- /// </remarks>
- static public string Compile (string input, out CompiledMethod compiled)
+ /// </remarks>
+ public string Compile (string input, out CompiledMethod compiled)
{
if (input == null || input.Length == 0){
compiled = null;
return null;
}
-
+
lock (evaluator_lock){
- if (!inited)
+ if (!inited) {
Init ();
-
+ ParseStartupFiles ();
+ } else {
+ ctx.Report.Printer.Reset ();
+ }
+
bool partial_input;
CSharpParser parser = ParseString (ParseMode.Silent, input, out partial_input);
if (parser == null){
return null;
}
- object parser_result = parser.InteractiveResult;
-
- if (!(parser_result is Class)){
- int errors = ctx.Report.Errors;
-
- NamespaceEntry.VerifyAllUsing ();
- if (errors == ctx.Report.Errors)
- parser.CurrentNamespace.Extract (using_alias_list, using_list);
- }
-
- compiled = CompileBlock (parser_result as Class, parser.undo, ctx.Report);
+ Class parser_result = parser.InteractiveResult;
+ compiled = CompileBlock (parser_result, parser.undo, ctx.Report);
+ return null;
}
-
- return null;
}
/// <summary>
/// On success, a delegate is returned that can be used
/// to invoke the method.
///
- /// </remarks>
- static public CompiledMethod Compile (string input)
+ /// </remarks>
+ public CompiledMethod Compile (string input)
{
CompiledMethod compiled;
// Either null (on error) or the compiled method.
return compiled;
}
-
- //
- // Todo: Should we handle errors, or expect the calling code to setup
- // the recording themselves?
- //
/// <summary>
/// Evaluates and expression or statement and returns any result values.
/// that the input is partial and that the user
/// should provide an updated string.
/// </remarks>
- public static string Evaluate (string input, out object result, out bool result_set)
+ public string Evaluate (string input, out object result, out bool result_set)
{
CompiledMethod compiled;
//
// The code execution does not need to keep the compiler lock
//
- object retval = typeof (NoValueSet);
-
+ object retval = typeof (QuitValue);
+
try {
invoke_thread = System.Threading.Thread.CurrentThread;
invoking = true;
// We use a reference to a compiler type, in this case
// Driver as a flag to indicate that this was a statement
//
- if (retval != typeof (NoValueSet)){
+ if (!ReferenceEquals (retval, typeof (QuitValue))) {
result_set = true;
result = retval;
}
return null;
}
- public static string [] GetCompletions (string input, out string prefix)
+ public string [] GetCompletions (string input, out string prefix)
{
prefix = "";
if (input == null || input.Length == 0)
return null;
}
- Class parser_result = parser.InteractiveResult as Class;
-
- if (parser_result == null){
- if (CSharpParser.yacc_verbose_flag != 0)
- Console.WriteLine ("Do not know how to cope with !Class yet");
- return null;
- }
+ Class parser_result = parser.InteractiveResult;
- try {
- RootContext.ResolveTree ();
- if (ctx.Report.Errors != 0)
- return null;
-
- RootContext.PopulateTypes ();
- if (ctx.Report.Errors != 0)
- return null;
-
- MethodOrOperator method = null;
- foreach (MemberCore member in parser_result.Methods){
- if (member.Name != "Host")
- continue;
-
- method = (MethodOrOperator) member;
- break;
- }
- if (method == null)
- throw new InternalErrorException ("did not find the the Host method");
+#if NET_4_0
+ var access = AssemblyBuilderAccess.RunAndCollect;
+#else
+ var access = AssemblyBuilderAccess.Run;
+#endif
+ var a = new AssemblyDefinitionDynamic (module, "completions");
+ a.Create (AppDomain.CurrentDomain, access);
+ module.SetDeclaringAssembly (a);
- BlockContext bc = new BlockContext (method, method.Block, method.ReturnType);
+ // Need to setup MemberCache
+ parser_result.CreateType ();
- try {
- method.Block.Resolve (null, bc, method.ParameterInfo, method);
- } catch (CompletionResult cr){
- prefix = cr.BaseText;
- return cr.Result;
- }
- } finally {
- parser.undo.ExecuteUndo ();
- }
-
+ var method = parser_result.Methods[0] as Method;
+ BlockContext bc = new BlockContext (method, method.Block, ctx.BuiltinTypes.Void);
+
+ try {
+ method.Block.Resolve (null, bc, method);
+ } catch (CompletionResult cr) {
+ prefix = cr.BaseText;
+ return cr.Result;
+ }
}
return null;
}
-
+
/// <summary>
/// Executes the given expression or statement.
/// </summary>
/// on success, false on parsing errors. Exceptions
/// might be thrown by the called code.
/// </remarks>
- public static bool Run (string statement)
+ public bool Run (string statement)
{
- if (!inited)
- Init ();
-
object result;
bool result_set;
- bool ok = Evaluate (statement, out result, out result_set) == null;
-
- return ok;
+ return Evaluate (statement, out result, out result_set) == null;
}
/// <summary>
/// This method will throw an exception if there is a syntax error,
/// of if the provided input is not an expression but a statement.
/// </remarks>
- public static object Evaluate (string input)
+ public object Evaluate (string input)
{
object result;
bool result_set;
return result;
}
-
+
enum InputKind {
EOF,
StatementOrExpression,
// without more than one lookahead token. There are very
// few ambiguities.
//
- static InputKind ToplevelOrStatement (SeekableStreamReader seekable)
+ InputKind ToplevelOrStatement (SeekableStreamReader seekable)
{
- Tokenizer tokenizer = new Tokenizer (seekable, (CompilationUnit) Location.SourceFiles [0], ctx);
+ Tokenizer tokenizer = new Tokenizer (seekable, source_file, ctx);
int t = tokenizer.token ();
switch (t){
// @partial_input: if @silent is true, then it returns whether the
// parsed expression was partial, and more data is needed
//
- static CSharpParser ParseString (ParseMode mode, string input, out bool partial_input)
+ CSharpParser ParseString (ParseMode mode, string input, out bool partial_input)
{
partial_input = false;
Reset ();
- queued_fields.Clear ();
+ Tokenizer.LocatedToken.Initialize ();
- Stream s = new MemoryStream (Encoding.Default.GetBytes (input));
- SeekableStreamReader seekable = new SeekableStreamReader (s, Encoding.Default);
+ var enc = ctx.Settings.Encoding;
+ var s = new MemoryStream (enc.GetBytes (input));
+ SeekableStreamReader seekable = new SeekableStreamReader (s, enc);
InputKind kind = ToplevelOrStatement (seekable);
if (kind == InputKind.Error){
}
seekable.Position = 0;
- CSharpParser parser = new CSharpParser (seekable, (CompilationUnit) Location.SourceFiles [0], ctx);
+ source_file.NamespaceContainer.DeclarationFound = false;
+ CSharpParser parser = new CSharpParser (seekable, source_file);
if (kind == InputKind.StatementOrExpression){
parser.Lexer.putback_char = Tokenizer.EvalStatementParserCharacter;
- RootContext.StatementMode = true;
+ ctx.Settings.StatementMode = true;
} else {
- //
- // Do not activate EvalCompilationUnitParserCharacter until
- // I have figured out all the limitations to invoke methods
- // in the generated classes. See repl.txt
- //
- parser.Lexer.putback_char = Tokenizer.EvalUsingDeclarationsParserCharacter;
- //parser.Lexer.putback_char = Tokenizer.EvalCompilationUnitParserCharacter;
- RootContext.StatementMode = false;
+ parser.Lexer.putback_char = Tokenizer.EvalCompilationUnitParserCharacter;
+ ctx.Settings.StatementMode = false;
}
if (mode == ParseMode.GetCompletions)
parser.Lexer.CompleteOnEOF = true;
- bool disable_error_reporting;
+ ReportPrinter old_printer = null;
if ((mode == ParseMode.Silent || mode == ParseMode.GetCompletions) && CSharpParser.yacc_verbose_flag == 0)
- disable_error_reporting = true;
- else
- disable_error_reporting = false;
-
- if (disable_error_reporting)
- ctx.Report.DisableReporting ();
+ old_printer = ctx.Report.SetPrinter (new StreamReportPrinter (TextWriter.Null));
+
try {
parser.parse ();
} finally {
if (mode != ParseMode.ReportErrors && parser.UnexpectedEOF)
partial_input = true;
- parser.undo.ExecuteUndo ();
+ if (parser.undo != null)
+ parser.undo.ExecuteUndo ();
+
parser = null;
}
- if (disable_error_reporting)
- ctx.Report.EnableReporting ();
+ if (old_printer != null)
+ ctx.Report.SetPrinter (old_printer);
}
return parser;
}
- //
- // Queue all the fields that we use, as we need to then go from FieldBuilder to FieldInfo
- // or reflection gets confused (it basically gets confused, and variables override each
- // other).
- //
- static ArrayList queued_fields = new ArrayList ();
-
- //static ArrayList types = new ArrayList ();
-
- static volatile bool invoking;
-
- static CompiledMethod CompileBlock (Class host, Undo undo, Report Report)
+ CompiledMethod CompileBlock (Class host, Undo undo, Report Report)
{
- RootContext.ResolveTree ();
- if (Report.Errors != 0){
- undo.ExecuteUndo ();
- return null;
+ string current_debug_name = "eval-" + count + ".dll";
+ ++count;
+#if STATIC
+ throw new NotSupportedException ();
+#else
+ AssemblyDefinitionDynamic assembly;
+ AssemblyBuilderAccess access;
+
+ if (Environment.GetEnvironmentVariable ("SAVE") != null) {
+ access = AssemblyBuilderAccess.RunAndSave;
+ assembly = new AssemblyDefinitionDynamic (module, current_debug_name, current_debug_name);
+ assembly.Importer = importer;
+ } else {
+#if NET_4_0
+ access = AssemblyBuilderAccess.RunAndCollect;
+#else
+ access = AssemblyBuilderAccess.Run;
+#endif
+ assembly = new AssemblyDefinitionDynamic (module, current_debug_name);
}
-
- RootContext.PopulateTypes ();
+
+ assembly.Create (AppDomain.CurrentDomain, access);
+
+ Method expression_method;
+ if (host != null) {
+ var base_class_imported = importer.ImportType (base_class);
+ var baseclass_list = new List<FullNamedExpression> (1) {
+ new TypeExpression (base_class_imported, host.Location)
+ };
+
+ host.AddBasesForPart (host, baseclass_list);
+
+ host.CreateType ();
+ host.DefineType ();
+ host.Define ();
+
+ expression_method = (Method) host.Methods[0];
+ } else {
+ expression_method = null;
+ }
+
+ module.CreateType ();
+ module.Define ();
if (Report.Errors != 0){
- undo.ExecuteUndo ();
+ if (undo != null)
+ undo.ExecuteUndo ();
+
return null;
}
- TypeBuilder tb = null;
- MethodBuilder mb = null;
-
if (host != null){
- tb = host.TypeBuilder;
- mb = null;
- foreach (MemberCore member in host.Methods){
- if (member.Name != "Host")
- continue;
-
- MethodOrOperator method = (MethodOrOperator) member;
- mb = method.MethodBuilder;
- break;
- }
-
- if (mb == null)
- throw new Exception ("Internal error: did not find the method builder for the generated method");
+ host.EmitType ();
}
- RootContext.EmitCode ();
- if (Report.Errors != 0)
+ module.Emit ();
+ if (Report.Errors != 0){
+ if (undo != null)
+ undo.ExecuteUndo ();
return null;
-
- RootContext.CloseTypes ();
+ }
- if (Environment.GetEnvironmentVariable ("SAVE") != null)
- CodeGen.Save (current_debug_name, false, Report);
+ module.CloseType ();
+ if (host != null)
+ host.CloseType ();
+
+ if (access == AssemblyBuilderAccess.RunAndSave)
+ assembly.Save ();
if (host == null)
return null;
// Unlike Mono, .NET requires that the MethodInfo is fetched, it cant
// work from MethodBuilders. Retarded, I know.
//
- Type tt = CodeGen.Assembly.Builder.GetType (tb.Name);
- MethodInfo mi = tt.GetMethod (mb.Name);
-
- // Pull the FieldInfos from the type, and keep track of them
- foreach (Field field in queued_fields){
- FieldInfo fi = tt.GetField (field.Name);
-
- FieldInfo old = (FieldInfo) fields [field.Name];
-
- // If a previous value was set, nullify it, so that we do
- // not leak memory
- if (old != null){
- if (TypeManager.IsStruct (old.FieldType)){
- //
- // TODO: Clear fields for structs
- //
- } else {
- try {
- old.SetValue (null, null);
- } catch {
+ var tt = assembly.Builder.GetType (host.TypeBuilder.Name);
+ var mi = tt.GetMethod (expression_method.Name);
+
+ if (host.Fields != null) {
+ //
+ // We need to then go from FieldBuilder to FieldInfo
+ // or reflection gets confused (it basically gets confused, and variables override each
+ // other).
+ //
+ foreach (Field field in host.Fields) {
+ var fi = tt.GetField (field.Name);
+
+ Tuple<FieldSpec, FieldInfo> old;
+
+ // If a previous value was set, nullify it, so that we do
+ // not leak memory
+ if (fields.TryGetValue (field.Name, out old)) {
+ if (old.Item1.MemberType.IsStruct) {
+ //
+ // TODO: Clear fields for structs
+ //
+ } else {
+ try {
+ old.Item2.SetValue (null, null);
+ } catch {
+ }
}
}
+
+ fields[field.Name] = Tuple.Create (field.Spec, fi);
}
-
- fields [field.Name] = fi;
}
- //types.Add (tb);
-
- queued_fields.Clear ();
return (CompiledMethod) System.Delegate.CreateDelegate (typeof (CompiledMethod), mi);
+#endif
}
-
- static internal void LoadAliases (NamespaceEntry ns)
- {
- ns.Populate (using_alias_list, using_list);
- }
-
+
/// <summary>
/// A sentinel value used to indicate that no value was
/// was set by the compiled function. This is used to
/// differentiate between a function not returning a
/// value and null.
/// </summary>
- public class NoValueSet {
- }
+ internal static class QuitValue { }
- static internal FieldInfo LookupField (string name)
+ internal Tuple<FieldSpec, FieldInfo> LookupField (string name)
{
- FieldInfo fi = (FieldInfo) fields [name];
-
+ Tuple<FieldSpec, FieldInfo> fi;
+ fields.TryGetValue (name, out fi);
return fi;
}
- //
- // Puts the FieldBuilder into a queue of names that will be
- // registered. We can not register FieldBuilders directly
- // we need to fetch the FieldInfo after Reflection cooks the
- // types, or bad things happen (bad means: FieldBuilders behave
- // incorrectly across multiple assemblies, causing assignments to
- // invalid areas
- //
- // This also serves for the parser to register Field classes
- // that should be exposed as global variables
- //
- static internal void QueueField (Field f)
- {
- queued_fields.Add (f);
- }
-
static string Quote (string s)
{
if (s.IndexOf ('"') != -1)
return "\"" + s + "\"";
}
- static public string GetUsing ()
+ public string GetUsing ()
{
- lock (evaluator_lock){
- StringBuilder sb = new StringBuilder ();
-
- foreach (object x in using_alias_list)
- sb.Append (String.Format ("using {0};\n", x));
-
- foreach (object x in using_list)
- sb.Append (String.Format ("using {0};\n", x));
-
- return sb.ToString ();
+ StringBuilder sb = new StringBuilder ();
+ // TODO:
+ //foreach (object x in ns.using_alias_list)
+ // sb.AppendFormat ("using {0};\n", x);
+
+ foreach (var ue in source_file.NamespaceContainer.Usings) {
+ sb.AppendFormat ("using {0};", ue.ToString ());
+ sb.Append (Environment.NewLine);
}
+
+ return sb.ToString ();
}
- static internal ICollection GetUsingList ()
+ internal ICollection<string> GetUsingList ()
{
- ArrayList res = new ArrayList (using_list.Count);
- foreach (object ue in using_list)
+ var res = new List<string> ();
+
+ foreach (var ue in source_file.NamespaceContainer.Usings)
res.Add (ue.ToString ());
return res;
}
- static internal string [] GetVarNames ()
+ internal string [] GetVarNames ()
{
lock (evaluator_lock){
- return (string []) new ArrayList (fields.Keys).ToArray (typeof (string));
+ return new List<string> (fields.Keys).ToArray ();
}
}
- static public string GetVars ()
+ public string GetVars ()
{
lock (evaluator_lock){
StringBuilder sb = new StringBuilder ();
- foreach (DictionaryEntry de in fields){
- FieldInfo fi = LookupField ((string) de.Key);
- object value = null;
- bool error = false;
-
+ foreach (var de in fields){
+ var fi = LookupField (de.Key);
+ object value;
try {
- if (value == null)
- value = "null";
- value = fi.GetValue (null);
+ value = fi.Item2.GetValue (null);
if (value is string)
value = Quote ((string)value);
} catch {
- error = true;
+ value = "<error reading value>";
}
-
- if (error)
- sb.Append (String.Format ("{0} {1} <error reading value>", TypeManager.CSharpName(fi.FieldType), de.Key));
- else
- sb.Append (String.Format ("{0} {1} = {2}", TypeManager.CSharpName(fi.FieldType), de.Key, value));
+
+ sb.AppendFormat ("{0} {1} = {2}", fi.Item1.MemberType.GetSignatureForError (), de.Key, value);
+ sb.AppendLine ();
}
return sb.ToString ();
/// <summary>
/// Loads the given assembly and exposes the API to the user.
/// </summary>
- static public void LoadAssembly (string file)
+ public void LoadAssembly (string file)
{
+ var loader = new DynamicLoader (importer, ctx);
+ var assembly = loader.LoadAssemblyFile (file);
+ if (assembly == null)
+ return;
+
lock (evaluator_lock){
- driver.LoadAssembly (file, false);
- GlobalRootNamespace.Instance.ComputeNamespaces (ctx);
+ importer.ImportAssembly (assembly, module.GlobalRootNamespace);
}
}
/// <summary>
/// Exposes the API of the given assembly to the Evaluator
/// </summary>
- static public void ReferenceAssembly (Assembly a)
+ public void ReferenceAssembly (Assembly a)
{
lock (evaluator_lock){
- GlobalRootNamespace.Instance.AddAssemblyReference (a);
- GlobalRootNamespace.Instance.ComputeNamespaces (ctx);
+ importer.ImportAssembly (a, module.GlobalRootNamespace);
}
}
-
}
/// Used to signal that the user has invoked the `quit' statement.
/// </summary>
public static bool QuitRequested;
+
+ public static Evaluator Evaluator;
/// <summary>
/// Shows all the variables defined so far.
Output.Write (Evaluator.GetUsing ());
Output.Flush ();
}
-
- public delegate void Simple ();
-
+
/// <summary>
/// Times the execution of the given delegate
/// </summary>
- static public TimeSpan Time (Simple a)
+ static public TimeSpan Time (Action a)
{
DateTime start = DateTime.Now;
a ();
return DateTime.Now - start;
}
-#if !SMCS_SOURCE
/// <summary>
/// Loads the assemblies from a package
/// </summary>
return;
}
- string pkgout = Driver.GetPackageFlags (pkg, false, RootContext.ToplevelTypes.Compiler.Report);
- if (pkgout == null)
- return;
+ string pkgout = Driver.GetPackageFlags (pkg, null);
string [] xargs = pkgout.Trim (new Char [] {' ', '\n', '\r', '\t'}).
Split (new Char [] { ' ', '\t'});
}
}
}
-#endif
/// <summary>
/// Loads the assembly
{
Evaluator.LoadAssembly (assembly);
}
+
+ static public void print (object obj)
+ {
+ Output.WriteLine (obj);
+ }
+
+ static public void print (string fmt, params object [] args)
+ {
+ Output.WriteLine (fmt, args);
+ }
/// <summary>
/// Returns a list of available static methods.
/// </summary>
static public string help {
get {
- return "Static methods:\n"+
- " Describe(obj) - Describes the object's type\n" +
- " LoadPackage (pkg); - Loads the given Package (like -pkg:FILE)\n" +
- " LoadAssembly (ass) - Loads the given assembly (like -r:ASS)\n" +
- " ShowVars (); - Shows defined local variables.\n" +
- " ShowUsing (); - Show active using decltions.\n" +
- " Prompt - The prompt used by the C# shell\n" +
- " ContinuationPrompt - The prompt for partial input\n" +
- " Time(() -> { }) - Times the specified code\n" +
- " quit;\n" +
- " help;\n";
+ return "Static methods:\n" +
+ " Describe (object) - Describes the object's type\n" +
+ " LoadPackage (package); - Loads the given Package (like -pkg:FILE)\n" +
+ " LoadAssembly (assembly) - Loads the given assembly (like -r:ASSEMBLY)\n" +
+ " ShowVars (); - Shows defined local variables.\n" +
+ " ShowUsing (); - Show active using declarations.\n" +
+ " Prompt - The prompt used by the C# shell\n" +
+ " ContinuationPrompt - The prompt for partial input\n" +
+ " Time(() -> { }) - Times the specified code\n" +
+ " print (obj) - Shorthand for Console.WriteLine\n" +
+ " quit; - You'll never believe it - this quits the repl!\n" +
+ " help; - This help text\n";
}
}
static public object quit {
get {
QuitRequested = true;
- return null;
+
+ // To avoid print null at the exit
+ return typeof (Evaluator.QuitValue);
}
}
static public string Describe (object x)
{
if (x == null)
- return "";
-
- Type t = x as Type;
- if (t == null)
- t = x.GetType ();
+ return "<null>";
+
+ var type = x as Type ?? x.GetType ();
StringWriter sw = new StringWriter ();
- new Outline (t, sw, true, false, false).OutlineType ();
+ new Outline (type, sw, true, false, false).OutlineType ();
return sw.ToString ();
}
#endif
}
- //
- // A local variable reference that will create a Field in a
- // Class with the resolved type. This is necessary so we can
- // support "var" as a field type in a class declaration.
- //
- // We allow LocalVariableReferece to do the heavy lifting, and
- // then we insert the field with the resolved type
- //
- public class LocalVariableReferenceWithClassSideEffect : LocalVariableReference {
- TypeContainer container;
- string name;
-
- public LocalVariableReferenceWithClassSideEffect (TypeContainer container, string name, Block current_block, string local_variable_id, LocalInfo li, Location loc)
- : base (current_block, local_variable_id, loc, li, false)
+ class HoistedEvaluatorVariable : HoistedVariable
+ {
+ public HoistedEvaluatorVariable (Field field)
+ : base (null, field)
{
- this.container = container;
- this.name = name;
}
- public override bool Equals (object obj)
+ public override void EmitSymbolInfo ()
{
- LocalVariableReferenceWithClassSideEffect lvr = obj as LocalVariableReferenceWithClassSideEffect;
- if (lvr == null)
- return false;
-
- if (lvr.name != name || lvr.container != container)
- return false;
-
- return base.Equals (obj);
}
- public override int GetHashCode ()
+ protected override FieldExpr GetFieldExpression (EmitContext ec)
{
- return name.GetHashCode ();
- }
-
- override public Expression DoResolveLValue (ResolveContext ec, Expression right_side)
- {
- Expression ret = base.DoResolveLValue (ec, right_side);
- if (ret == null)
- return null;
-
- Field f = new Field (container, new TypeExpression (ret.Type, Location),
- Modifiers.PUBLIC | Modifiers.STATIC,
- new MemberName (name, Location), null);
- container.AddField (f);
- if (f.Define ())
- Evaluator.QueueField (f);
-
- return ret;
+ return new FieldExpr (field, field.Location);
}
}
{
}
- public override Expression DoResolve (ResolveContext ec)
+ protected override Expression DoResolve (ResolveContext ec)
{
- CloneContext cc = new CloneContext ();
- Expression clone = source.Clone (cc);
+ Expression clone = source.Clone (new CloneContext ());
clone = clone.Resolve (ec);
if (clone == null)
return null;
+ //
+ // A useful feature for the REPL: if we can resolve the expression
+ // as a type, Describe the type;
+ //
+ if (ec.Module.Evaluator.DescribeTypeExpressions){
+ var old_printer = ec.Report.SetPrinter (new SessionReportPrinter ());
+ Expression tclone;
+ try {
+ // Note: clone context cannot be shared otherwise block mapping would leak
+ tclone = source.Clone (new CloneContext ());
+ tclone = tclone.Resolve (ec, ResolveFlags.Type);
+ if (ec.Report.Errors > 0)
+ tclone = null;
+ } finally {
+ ec.Report.SetPrinter (old_printer);
+ }
+
+ if (tclone != null) {
+ Arguments args = new Arguments (1);
+ args.Add (new Argument (new TypeOf ((TypeExpr) clone, Location)));
+ return new Invocation (new SimpleName ("Describe", Location), args).Resolve (ec);
+ }
+ }
+
// This means its really a statement.
- if (clone.Type == TypeManager.void_type){
- source = source.Resolve (ec);
- target = null;
- type = TypeManager.void_type;
- eclass = ExprClass.Value;
- return this;
+ if (clone.Type.Kind == MemberKind.Void || clone is DynamicInvocation || clone is Assign) {
+ return clone;
}
+ source = clone;
return base.DoResolve (ec);
}
-
- public override void Emit (EmitContext ec)
- {
- if (target == null)
- source.Emit (ec);
- else
- base.Emit (ec);
- }
-
- public override void EmitStatement (EmitContext ec)
- {
- if (target == null)
- source.Emit (ec);
- else
- base.EmitStatement (ec);
- }
}
- public class Undo {
- ArrayList undo_types;
+ public class Undo
+ {
+ List<Action> undo_actions;
public Undo ()
{
- undo_types = new ArrayList ();
}
public void AddTypeContainer (TypeContainer current_container, TypeContainer tc)
Console.Error.WriteLine ("Internal error: inserting container into itself");
return;
}
-
- if (undo_types == null)
- undo_types = new ArrayList ();
- undo_types.Add (new Pair (current_container, tc));
+
+ if (undo_actions == null)
+ undo_actions = new List<Action> ();
+
+ var existing = current_container.Types.FirstOrDefault (l => l.MemberName.Basename == tc.MemberName.Basename);
+ if (existing != null) {
+ current_container.RemoveTypeContainer (existing);
+ existing.NamespaceEntry.SlaveDeclSpace.RemoveTypeContainer (existing);
+ undo_actions.Add (() => current_container.AddTypeContainer (existing));
+ }
+
+ undo_actions.Add (() => current_container.RemoveTypeContainer (tc));
}
public void ExecuteUndo ()
{
- if (undo_types == null)
+ if (undo_actions == null)
return;
- foreach (Pair p in undo_types){
- TypeContainer current_container = (TypeContainer) p.First;
-
- current_container.RemoveTypeContainer ((TypeContainer) p.Second);
+ foreach (var p in undo_actions){
+ p ();
}
- undo_types = null;
+
+ undo_actions = null;
}
}
}
-