Remove backends.

compiler/java/com/google/dart/compiler/util/AstUtil.java

Index: compiler/java/com/google/dart/compiler/util/AstUtil.java
diff --git a/compiler/java/com/google/dart/compiler/util/AstUtil.java b/compiler/java/com/google/dart/compiler/util/AstUtil.java
deleted file mode 100644
index 11f7211fff9b31071b0836edeb2a716ab3f142db..0000000000000000000000000000000000000000
--- a/compiler/java/com/google/dart/compiler/util/AstUtil.java
+++ /dev/null
@@ -1,226 +0,0 @@
-// Copyright (c) 2011, 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.
-
-package com.google.dart.compiler.util;
-
-import com.google.dart.compiler.InternalCompilerException;
-import com.google.dart.compiler.backend.js.ast.JsArrayAccess;
-import com.google.dart.compiler.backend.js.ast.JsBinaryOperation;
-import com.google.dart.compiler.backend.js.ast.JsBinaryOperator;
-import com.google.dart.compiler.backend.js.ast.JsBlock;
-import com.google.dart.compiler.backend.js.ast.JsCase;
-import com.google.dart.compiler.backend.js.ast.JsDefault;
-import com.google.dart.compiler.backend.js.ast.JsExpression;
-import com.google.dart.compiler.backend.js.ast.JsFunction;
-import com.google.dart.compiler.backend.js.ast.JsInvocation;
-import com.google.dart.compiler.backend.js.ast.JsName;
-import com.google.dart.compiler.backend.js.ast.JsNameRef;
-import com.google.dart.compiler.backend.js.ast.JsParameter;
-import com.google.dart.compiler.backend.js.ast.JsPrefixOperation;
-import com.google.dart.compiler.backend.js.ast.JsScope;
-import com.google.dart.compiler.backend.js.ast.JsStatement;
-import com.google.dart.compiler.backend.js.ast.JsSwitch;
-import com.google.dart.compiler.backend.js.ast.JsSwitchMember;
-import com.google.dart.compiler.backend.js.ast.JsUnaryOperator;
-import com.google.dart.compiler.backend.js.ast.JsVars;
-import com.google.dart.compiler.backend.js.ast.JsVars.JsVar;
-import com.google.dart.compiler.common.SourceInfo;
-
-/**
- * @author johnlenz@google.com (John Lenz)
- */
-public class AstUtil {
-
-  public static JsInvocation newInvocation(
-      JsExpression target, JsExpression ... params) {
-    JsInvocation invoke = new JsInvocation();
-    invoke.setQualifier(target);
-    for (JsExpression expr : params) {
-      invoke.getArguments().add(expr);
-    }
-    return invoke;
-  }
-
-  public static JsNameRef newQualifiedNameRef(String name) {
-    JsNameRef node = null;
-    int endPos = -1;
-    int startPos = 0;
-    do {
-      endPos = name.indexOf('.', startPos);
-      String part = (endPos == -1
-          ? name.substring(startPos)
-          : name.substring(startPos, endPos));
-      node = newNameRef(node, part);
-      startPos = endPos + 1;
-    } while (endPos != -1);
-
-    return node;
-  }
-
-  public static JsNameRef newNameRef(JsExpression qualifier, String prop) {
-    JsNameRef nameRef = new JsNameRef(prop);
-    if (qualifier != null) {
-      nameRef.setQualifier(qualifier);
-    }
-    return nameRef;
-  }
-
-  public static JsNameRef nameref(SourceInfo info, JsName qualifier, JsName prop) {
-    JsNameRef nameRef = new JsNameRef(prop);
-    if (qualifier != null) {
-      nameRef.setQualifier(qualifier.makeRef());
-    }
-    nameRef.setSourceRef(info);
-    return nameRef;
-  }
-
-  public static JsNameRef newNameRef(JsExpression qualifier, JsName prop) {
-    JsNameRef nameRef = new JsNameRef(prop);
-    if (qualifier != null) {
-      nameRef.setQualifier(qualifier);
-    }
-    return nameRef;
-  }
-
-  public static JsNameRef newPrototypeNameRef(JsExpression qualifier) {
-    return newNameRef(qualifier, "prototype");
-  }
-
-  public static JsArrayAccess newArrayAccess(JsExpression target, JsExpression key) {
-    JsArrayAccess arr = new JsArrayAccess();
-    arr.setArrayExpr(target);
-    arr.setIndexExpr(key);
-    return arr;
-  }
-
-  public static JsBlock newBlock(JsStatement ... stmts) {
-    JsBlock jsBlock = new JsBlock();
-    for (JsStatement stmt : stmts) {
-      jsBlock.getStatements().add(stmt);
-    }
-    return jsBlock;
-  }
-
-  /**
-   * Returns a sequence of expressions (using the binary sequence operator).
-   * @param exprs - expressions to add to sequence
-   * @return a sequence of expressions.
-   */
-  public static JsBinaryOperation newSequence(JsExpression ... exprs) {
-    if (exprs.length < 2) {
-        throw new InternalCompilerException("newSequence expects at least two arguments");
-    }
-    JsExpression result = exprs[exprs.length - 1];
-    for (int i = exprs.length - 2; i >= 0; i--) {
-      result = new JsBinaryOperation(JsBinaryOperator.COMMA, exprs[i], result);
-    }
-    return (JsBinaryOperation) result;
-  }
-
-  // Ensure a valid LHS
-  public static JsBinaryOperation newAssignment(
-      JsNameRef nameRef, JsExpression expr) {
-    return new JsBinaryOperation(JsBinaryOperator.ASG, nameRef, expr);
-  }
-
-  public static JsBinaryOperation newAssignment(
-      JsArrayAccess target, JsExpression expr) {
-     return new JsBinaryOperation(JsBinaryOperator.ASG, target, expr);
-  }
-
-  public static JsVars newVar(SourceInfo info, JsName name, JsExpression expr) {
-    JsVar var = new JsVar(name).setSourceRef(info);
-    var.setInitExpr(expr);
-    JsVars vars = new JsVars();
-    vars.add(var);
-    return vars;
-  }
-
-  public static JsSwitch newSwitch(
-      JsExpression expr, JsSwitchMember ... cases) {
-    JsSwitch jsSwitch = new JsSwitch();
-    jsSwitch.setExpr(expr);
-    for (JsSwitchMember jsCase : cases) {
-      jsSwitch.getCases().add(jsCase);
-    }
-    return jsSwitch;
-  }
-
-  public static JsCase newCase(JsExpression expr, JsStatement ... stmts) {
-    JsCase jsCase = new JsCase();
-    jsCase.setCaseExpr(expr);
-    for (JsStatement stmt : stmts) {
-      jsCase.getStmts().add(stmt);
-    }
-    return jsCase;
-  }
-
-  public static JsDefault newDefaultCase(JsStatement ... stmts) {
-    JsDefault jsCase = new JsDefault();
-    for (JsStatement stmt : stmts) {
-      jsCase.getStmts().add(stmt);
-    }
-    return jsCase;
-  }
-
-  public static JsFunction newFunction(
-     JsScope scope, JsName name, JsParameter[] params, JsStatement ... stmts) {
-    JsFunction fn = new JsFunction(scope);
-    if (name != null) {
-      fn.setName(name);
-    }
-    if (params != null) {
-      for (JsParameter param : params) {
-        fn.getParameters().add(param);
-      }
-    }
-    fn.setBody(newBlock(stmts));
-    return fn;
-  }
-
-  public static JsInvocation call(SourceInfo src, JsExpression target, JsExpression ... params) {
-    return (JsInvocation) newInvocation(target, params).setSourceRef(src);
-  }
-
-  public static JsBinaryOperation comma(SourceInfo src, JsExpression op1, JsExpression op2) {
-    return (JsBinaryOperation)new JsBinaryOperation(JsBinaryOperator.COMMA, op1, op2)
-       .setSourceRef(src);
-  }
-
-  public static JsNameRef nameref(SourceInfo src, String name) {
-    return (JsNameRef) new JsNameRef(name).setSourceRef(src);
-  }
-
-  public static JsNameRef nameref(SourceInfo src, JsName qualifier, String prop) {
-    return AstUtil.nameref(src, qualifier.makeRef().setSourceRef(src), prop);
-  }
-
-  public static JsNameRef nameref(SourceInfo src, JsExpression qualifier, String prop) {
-    return (JsNameRef) newNameRef(qualifier, prop).setSourceRef(src);
-  }
-
-  public static JsExpression assign(SourceInfo src, JsNameRef op1, JsExpression op2) {
-    return newAssignment(op1, op2).setSourceRef(src);
-  }
-
-  public static JsExpression neq(SourceInfo src, JsExpression op1, JsExpression op2) {
-    return new JsBinaryOperation(JsBinaryOperator.NEQ, op1, op2).setSourceRef(src);
-  }
-
-  public static JsExpression not(SourceInfo src, JsExpression op1) {
-    return new JsPrefixOperation(JsUnaryOperator.NOT, op1).setSourceRef(src);
-  }
-
-  public static JsExpression preinc(SourceInfo src, JsExpression op1) {
-    return new JsPrefixOperation(JsUnaryOperator.INC, op1).setSourceRef(src);
-  }
-
-  public static JsExpression and(SourceInfo src, JsExpression op1, JsExpression op2) {
-    return new JsBinaryOperation(JsBinaryOperator.AND, op1, op2).setSourceRef(src);
-  }
-
-  public static JsExpression in(SourceInfo src, JsExpression propName, JsExpression obj) {
-    return new JsBinaryOperation(JsBinaryOperator.INOP, propName, obj).setSourceRef(src);
-  }
-}