dart2js: Rename emitters.

pkg/compiler/lib/src/js_emitter/old_emitter/container_builder.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-part of dart2js.js_emitter;
-
-/// This class should morph into something that makes it easy to build
-/// JavaScript representations of libraries, class-sides, and instance-sides.
-/// Initially, it is just a placeholder for code that is moved from
-/// [CodeEmitterTask].
-class ContainerBuilder extends CodeEmitterHelper {
-
-  void addMemberMethod(DartMethod method, ClassBuilder builder) {
-    MethodElement member = method.element;
-    jsAst.Name name = method.name;
-    FunctionSignature parameters = member.functionSignature;
-    jsAst.Expression code = method.code;
-    bool needsStubs = method.parameterStubs.isNotEmpty;
-    bool canBeApplied = method.canBeApplied;
-    bool canBeReflected = method.canBeReflected;
-    bool canTearOff = method.needsTearOff;
-    jsAst.Name tearOffName = method.tearOffName;
-    bool isClosure = method is InstanceMethod && method.isClosure;
-    jsAst.Name superAlias = method is InstanceMethod ? method.aliasName : null;
-    bool hasSuperAlias = superAlias != null;
-    jsAst.Expression memberTypeExpression = method.functionType;
-
-    bool needStructuredInfo =
-        canTearOff || canBeReflected || canBeApplied || hasSuperAlias;
-
-    emitter.interceptorEmitter.recordMangledNameOfMemberMethod(member, name);
-
-    if (!needStructuredInfo) {
-      compiler.dumpInfoTask.registerElementAst(member,
-          builder.addProperty(name, code));
-
-      for (ParameterStubMethod stub in method.parameterStubs) {
-        assert(stub.callName == null);
-        jsAst.Property property = builder.addProperty(stub.name, stub.code);
-        compiler.dumpInfoTask.registerElementAst(member, property);
-        emitter.interceptorEmitter
-            .recordMangledNameOfMemberMethod(member, stub.name);
-      }
-      return;
-    }
-    emitter.needsStructuredMemberInfo = true;
-
-    // This element is needed for reflection or needs additional stubs or has a
-    // super alias. So we need to retain additional information.
-
-    // The information is stored in an array with this format:
-    //
-    // 1.   The alias name for this function (optional).
-    // 2.   The JS function for this member.
-    // 3.   First stub.
-    // 4.   Name of first stub.
-    // ...
-    // M.   Call name of this member.
-    // M+1. Call name of first stub.
-    // ...
-    // N.   Getter name for tearOff.
-    // N+1. (Required parameter count << 1) + (member.isAccessor ? 1 : 0).
-    // N+2. (Optional parameter count << 1) +
-    //                      (parameters.optionalParametersAreNamed ? 1 : 0).
-    // N+3. Index to function type in constant pool.
-    // N+4. First default argument.
-    // ...
-    // O.   First parameter name (if needed for reflection or Function.apply).
-    // ...
-    // P.   Unmangled name (if reflectable).
-    // P+1. First metadata (if reflectable).
-    // ...
-    // TODO(ahe): Consider one of the parameter counts can be replaced by the
-    // length property of the JavaScript function object.
-
-    List<jsAst.Expression> expressions = <jsAst.Expression>[];
-
-    // Create the optional aliasing entry if this method is called via super.
-    if (hasSuperAlias) {
-      expressions.add(js.quoteName(superAlias));
-    }
-
-    expressions.add(code);
-
-    bool onlyNeedsSuperAlias =
-        !(canTearOff || canBeReflected || canBeApplied || needsStubs);
-
-    if (onlyNeedsSuperAlias) {
-      jsAst.ArrayInitializer arrayInit =
-            new jsAst.ArrayInitializer(expressions);
-          compiler.dumpInfoTask.registerElementAst(member,
-              builder.addProperty(name, arrayInit));
-      return;
-    }
-
-    jsAst.Literal callSelectorString;
-    if (method.callName == null) {
-      callSelectorString = new jsAst.LiteralNull();
-    } else {
-      callSelectorString = js.quoteName(method.callName);
-    }
-
-    // On [requiredParameterCount], the lower bit is set if this method can be
-    // called reflectively.
-    int requiredParameterCount = parameters.requiredParameterCount << 1;
-    if (member.isAccessor) requiredParameterCount++;
-
-    int optionalParameterCount = parameters.optionalParameterCount << 1;
-    if (parameters.optionalParametersAreNamed) optionalParameterCount++;
-
-    List tearOffInfo = [callSelectorString];
-
-    for (ParameterStubMethod stub in method.parameterStubs) {
-      jsAst.Name invocationName = stub.name;
-      emitter.interceptorEmitter
-          .recordMangledNameOfMemberMethod(member, invocationName);
-
-      expressions.add(stub.code);
-      if (member.isInstanceMember) {
-        expressions.add(js.quoteName(invocationName));
-      }
-      jsAst.Name callName = stub.callName;
-      jsAst.Literal callSelectorString =
-          (callName == null) ? new jsAst.LiteralNull() : js.quoteName(callName);
-      tearOffInfo.add(callSelectorString);
-    }
-
-    expressions
-        ..addAll(tearOffInfo)
-        ..add((tearOffName == null || member.isAccessor)
-              ? js("null") : js.quoteName(tearOffName))
-        ..add(js.number(requiredParameterCount))
-        ..add(js.number(optionalParameterCount))
-        ..add(memberTypeExpression == null ? js("null") : memberTypeExpression)
-        ..addAll(task.metadataCollector.reifyDefaultArguments(member));
-
-    if (canBeReflected || canBeApplied) {
-      parameters.forEachParameter((Element parameter) {
-        expressions.add(task.metadataCollector.reifyName(parameter.name));
-        if (backend.mustRetainMetadata) {
-          Iterable<jsAst.Expression> metadataIndices =
-              parameter.metadata.map((MetadataAnnotation annotation) {
-            ConstantValue constant =
-                backend.constants.getConstantValueForMetadata(annotation);
-            backend.constants.addCompileTimeConstantForEmission(constant);
-            return task.metadataCollector.reifyMetadata(annotation);
-          });
-          expressions.add(new jsAst.ArrayInitializer(metadataIndices.toList()));
-        }
-      });
-    }
-    if (canBeReflected) {
-      jsAst.LiteralString reflectionName;
-      if (member.isConstructor) {
-        // TODO(herhut): This registers name as a mangled name. Do we need this
-        //               given that we use a different name below?
-        emitter.getReflectionName(member, name);
-        reflectionName =
-            new jsAst.LiteralString(
-                '"new ${Elements.reconstructConstructorName(member)}"');
-      } else {
-        reflectionName =
-            js.string(namer.privateName(member.memberName));
-      }
-      expressions
-          ..add(reflectionName)
-          ..addAll(task.metadataCollector.computeMetadata(member));
-    } else if (isClosure && canBeApplied) {
-      expressions.add(js.string(namer.privateName(member.memberName)));
-    }
-
-    jsAst.ArrayInitializer arrayInit =
-      new jsAst.ArrayInitializer(expressions.toList());
-    compiler.dumpInfoTask.registerElementAst(member,
-        builder.addProperty(name, arrayInit));
-  }
-
-  void addMemberField(Field field, ClassBuilder builder) {
-    // For now, do nothing.
-  }
-}