C# JScript.Context类代码示例

 internal EnumDeclaration(Context context, IdentifierLiteral id, TypeExpression baseType, Block body, FieldAttributes attributes, CustomAttributeList customAttributes) : base(context, id, new TypeExpression(new ConstantWrapper(Typeob.Enum, null)), new TypeExpression[0], body, attributes, false, false, true, false, customAttributes)
 {
     this.baseType = (baseType != null) ? baseType : new TypeExpression(new ConstantWrapper(Typeob.Int32, null));
     base.needsEngine = false;
     base.attributes &= TypeAttributes.NestedFamORAssem;
     TypeExpression expression = new TypeExpression(new ConstantWrapper(base.classob, base.context));
     AST ast = new ConstantWrapper(-1, null);
     AST ast2 = new ConstantWrapper(1, null);
     JSMemberField[] fields = base.fields;
     for (int i = 0; i < fields.Length; i++)
     {
         FieldInfo info = fields[i];
         JSVariableField field = (JSVariableField) info;
         field.attributeFlags = FieldAttributes.Literal | FieldAttributes.Static | FieldAttributes.Public;
         field.type = expression;
         if (field.value == null)
         {
             field.value = ast = new Plus(ast.context, ast, ast2);
         }
         else
         {
             ast = (AST) field.value;
         }
         field.value = new DeclaredEnumValue(field.value, field.Name, base.classob);
     }
 }

 internal PostOrPrefixOperator(Context context, AST operand, PostOrPrefix operatorTok)
   : base(context, operand) {
   this.operatorMeth = null;
   this.operatorTok = operatorTok;
   this.metaData = null;
   this.type = null;
 }

 internal If(Context context, AST condition, AST true_branch, AST false_branch)
   : base(context) {
   this.condition = condition;
   this.operand1 = true_branch;
   this.operand2 = false_branch;
   this.completion = new Completion();
 }

 internal static TokenColor ColorFromToken(Context context)
 {
     JSToken token = context.GetToken();
     if (JSScanner.IsKeyword(token))
     {
         return TokenColor.COLOR_KEYWORD;
     }
     if (JSToken.Identifier == token)
     {
         if (context.Equals("eval"))
         {
             return TokenColor.COLOR_KEYWORD;
         }
         return TokenColor.COLOR_IDENTIFIER;
     }
     if (JSToken.StringLiteral == token)
     {
         return TokenColor.COLOR_STRING;
     }
     if ((JSToken.NumericLiteral == token) || (JSToken.IntegerLiteral == token))
     {
         return TokenColor.COLOR_NUMBER;
     }
     if ((JSToken.Comment == token) || (JSToken.UnterminatedComment == token))
     {
         return TokenColor.COLOR_COMMENT;
     }
     if (JSScanner.IsOperator(token))
     {
         return TokenColor.COLOR_OPERATOR;
     }
     return TokenColor.COLOR_TEXT;
 }

 internal StaticInitializer(Context context, Block body, FunctionScope own_scope)
   : base(context) {
   this.func = new FunctionObject(null, new ParameterDeclaration[0], null, body, own_scope, Globals.ScopeStack.Peek(), context, MethodAttributes.Private|MethodAttributes.Static);
   this.func.isMethod = true;
   this.func.hasArgumentsObject = false;
   this.completion = new Completion();
 }

 internal FunctionObject(Type t, string name, string method_name, string[] formal_parameters, JSLocalField[] fields, bool must_save_stack_locals, bool hasArgumentsObject, string text, VsaEngine engine) : base(engine.Globals.globalObject.originalFunction.originalPrototype, name, formal_parameters.Length)
 {
     base.engine = engine;
     this.formal_parameters = formal_parameters;
     this.argumentsSlotNumber = 0;
     this.body = null;
     this.method = TypeReflector.GetTypeReflectorFor(Globals.TypeRefs.ToReferenceContext(t)).GetMethod(method_name, BindingFlags.Public | BindingFlags.Static);
     this.parameterInfos = this.method.GetParameters();
     if (!Microsoft.JScript.CustomAttribute.IsDefined(this.method, typeof(JSFunctionAttribute), false))
     {
         this.isMethod = true;
     }
     else
     {
         JSFunctionAttributeEnum attributeValue = ((JSFunctionAttribute) Microsoft.JScript.CustomAttribute.GetCustomAttributes(this.method, typeof(JSFunctionAttribute), false)[0]).attributeValue;
         this.isExpandoMethod = (attributeValue & JSFunctionAttributeEnum.IsExpandoMethod) != JSFunctionAttributeEnum.None;
     }
     this.funcContext = null;
     this.own_scope = null;
     this.fields = fields;
     this.must_save_stack_locals = must_save_stack_locals;
     this.hasArgumentsObject = hasArgumentsObject;
     this.text = text;
     this.attributes = MethodAttributes.Public;
     this.globals = engine.Globals;
     this.superConstructor = null;
     this.superConstructorCall = null;
     this.enclosing_scope = this.globals.ScopeStack.Peek();
     base.noExpando = false;
     this.clsCompliance = CLSComplianceSpec.NotAttributed;
 }

 public virtual SourceState GetStateForText(string sourceCode, SourceState state)
 {
     if (sourceCode != null)
     {
         this._state = SourceState.STATE_COLOR_NORMAL;
         Context sourceContext = new Context(null, sourceCode);
         this._scanner.SetSource(sourceContext);
         if ((SourceState.STATE_COLOR_COMMENT == state) && (this._scanner.SkipMultiLineComment() > sourceCode.Length))
         {
             this._state = SourceState.STATE_COLOR_COMMENT;
             return this._state;
         }
         this._scanner.GetNextToken();
         JSToken none = JSToken.None;
         while (sourceContext.GetToken() != JSToken.EndOfFile)
         {
             none = sourceContext.GetToken();
             this._scanner.GetNextToken();
         }
         if (JSToken.UnterminatedComment == none)
         {
             this._state = SourceState.STATE_COLOR_COMMENT;
         }
     }
     return this._state;
 }

 internal RegExpLiteral(String source, String flags, Context context)
   : base(context) {
   this.source = source;
   this.ignoreCase = this.global = this.multiline = false;
   if (flags != null)
     for (int i = 0; i < flags.Length; i++)
       switch (flags[i]) {
         case 'i':
           if (this.ignoreCase)
             throw new JScriptException(JSError.RegExpSyntax);
           this.ignoreCase = true;
           break;
         case 'g':
           if (this.global)
             throw new JScriptException(JSError.RegExpSyntax);
           this.global = true;
           break;
         case 'm':
           if (this.multiline)
             throw new JScriptException(JSError.RegExpSyntax);
           this.multiline = true;
           break;
         default:
           throw new JScriptException(JSError.RegExpSyntax);
       }
 }

	internal JScriptException(JSError errorNumber, Context context)
			{
				this.errorNumber = errorNumber;
				this.wrappedException = null;
				this.context = context;
				this.message = null;
			}

 internal Eval(Context context, AST operand, AST unsafeOption) : base(context)
 {
     this.operand = operand;
     this.unsafeOption = unsafeOption;
     ScriptObject obj2 = base.Globals.ScopeStack.Peek();
     ((IActivationObject) obj2).GetGlobalScope().evilScript = true;
     if (obj2 is ActivationObject)
     {
         ((ActivationObject) obj2).isKnownAtCompileTime = base.Engine.doFast;
     }
     if (obj2 is FunctionScope)
     {
         this.enclosingFunctionScope = (FunctionScope) obj2;
         this.enclosingFunctionScope.mustSaveStackLocals = true;
         for (ScriptObject obj3 = this.enclosingFunctionScope.GetParent(); obj3 != null; obj3 = obj3.GetParent())
         {
             FunctionScope scope = obj3 as FunctionScope;
             if (scope != null)
             {
                 scope.mustSaveStackLocals = true;
                 scope.closuresMightEscape = true;
             }
         }
     }
     else
     {
         this.enclosingFunctionScope = null;
     }
 }

 internal ScriptFunction Construct(object[] args, VsaEngine engine)
 {
     ScriptFunction function;
     StringBuilder builder = new StringBuilder("function anonymous(");
     int index = 0;
     int num2 = args.Length - 2;
     while (index < num2)
     {
         builder.Append(Microsoft.JScript.Convert.ToString(args[index]));
         builder.Append(", ");
         index++;
     }
     if (args.Length > 1)
     {
         builder.Append(Microsoft.JScript.Convert.ToString(args[args.Length - 2]));
     }
     builder.Append(") {\n");
     if (args.Length > 0)
     {
         builder.Append(Microsoft.JScript.Convert.ToString(args[args.Length - 1]));
     }
     builder.Append("\n}");
     Context context = new Context(new DocumentContext("anonymous", engine), builder.ToString());
     JSParser parser = new JSParser(context);
     engine.PushScriptObject(((IActivationObject) engine.ScriptObjectStackTop()).GetGlobalScope());
     try
     {
         function = (ScriptFunction) parser.ParseFunctionExpression().PartiallyEvaluate().Evaluate();
     }
     finally
     {
         engine.PopScriptObject();
     }
     return function;
 }

 internal Try(Context context, AST body, AST identifier, TypeExpression type, AST handler, AST finally_block, bool finallyHasControlFlowOutOfIt, Context tryEndContext)
   : base(context) {
   this.body = body;
   this.type = type;
   this.handler = handler;
   this.finally_block = finally_block;
   ScriptObject current_scope = (ScriptObject)Globals.ScopeStack.Peek();
   while (current_scope is WithObject) //Can only happen at run time and only if there is an eval
     current_scope = current_scope.GetParent();
   this.handler_scope = null;
   this.field = null;
   if (identifier != null){
     this.fieldName = identifier.ToString();
     this.field = current_scope.GetField(this.fieldName, BindingFlags.Public|BindingFlags.Instance|BindingFlags.Static);
     if (this.field != null){
       if (type == null && (field is JSVariableField && field.IsStatic && ((JSVariableField)field).type == null) && !field.IsLiteral && !field.IsInitOnly)
         return; //preserve legacy semantics by using the existing variable
       if (((IActivationObject)current_scope).GetLocalField(this.fieldName) != null)
         identifier.context.HandleError(JSError.DuplicateName, false);
     }
     this.handler_scope = new BlockScope(current_scope);
     this.handler_scope.catchHanderScope = true;
     JSVariableField f = this.handler_scope.AddNewField(identifier.ToString(), Missing.Value, FieldAttributes.Public); // must be a local 
     this.field = f; f.originalContext = identifier.context;
     if (identifier.context.document.debugOn && this.field is JSLocalField){
       this.handler_scope.AddFieldForLocalScopeDebugInfo((JSLocalField)this.field);
     }
   }
   this.finallyHasControlFlowOutOfIt = finallyHasControlFlowOutOfIt;
   this.tryEndContext = tryEndContext;
 }

 internal Call(Context context, AST func, ASTList args, bool inBrackets) : base(context)
 {
     this.func = func;
     this.args = (args == null) ? new ASTList(context) : args;
     this.argValues = null;
     this.outParameterCount = 0;
     int num = 0;
     int count = this.args.count;
     while (num < count)
     {
         if (this.args[num] is AddressOf)
         {
             this.outParameterCount++;
         }
         num++;
     }
     this.isConstructor = false;
     this.inBrackets = inBrackets;
     this.enclosingFunctionScope = null;
     this.alreadyPartiallyEvaluated = false;
     this.isAssignmentToDefaultIndexedProperty = false;
     ScriptObject parent = base.Globals.ScopeStack.Peek();
     while (!(parent is FunctionScope))
     {
         parent = parent.GetParent();
         if (parent == null)
         {
             return;
         }
     }
     this.enclosingFunctionScope = (FunctionScope) parent;
 }

 internal override void Close()
 {
     base.Close();
     this.binaryCode = null;
     this.scope = null;
     this.codeContext = null;
     this.compiledBlock = null;
 }

 internal Import(Context context, AST name)
   : base(context) {
   if (name == null) //could happen if constructed while in error recovery mode
     return;
   WrappedNamespace ns = name.EvaluateAsWrappedNamespace(true);
   this.Engine.SetEnclosingContext(ns);
   this.name = ns.name;
 }