Examples of com.google.gwt.dev.jjs.ast.JLocalRef

com.google.gwt.dev.jjs.ast.JLocalRef
Java local variable reference.


            multi.addExpressions(instance);
            JLocal var = JProgram.createLocal(instance.getSourceInfo(), "$t", instance.getType(),
                false, body);


            JLocalRef localRef = new JLocalRef(var.getSourceInfo(), var);
            instance = new JBinaryOperation(instance.getSourceInfo(), localRef.getType(),
                JBinaryOperator.ASG, localRef, instance);
          }
          clinit = createClinitCall(x.getSourceInfo(),
              ((JMethodCall) x).getTarget().getEnclosingType());
        } else if (x instanceof JFieldRef) {

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      List<JLocalRef> catchArgs = x.getCatchArgs();
      List<JBlock> catchBlocks = x.getCatchBlocks();
      Iterator<JLocalRef> itA = catchArgs.iterator();
      Iterator<JBlock> itB = catchBlocks.iterator();
      while (itA.hasNext()) {
        JLocalRef localRef = itA.next();
        itB.next();
        JReferenceType type = (JReferenceType) localRef.getType();
        if (!program.typeOracle.isInstantiatedType(type)
            || type == program.getTypeNull()) {
          itA.remove();
          itB.remove();
          didChange = true;

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      accept(x.getTryBlock());


      List<JLocalRef> catchArgs = x.getCatchArgs();
      List<JBlock> catchBlocks = x.getCatchBlocks();
      for (int i = 0, c = catchArgs.size(); i < c; ++i) {
        JLocalRef arg = catchArgs.get(i);
        JBlock catchBlock = catchBlocks.get(i);
        JsCatch jsCatch = new JsCatch(peek(), arg.getTarget().getName());
        JsParameter jsParam = jsCatch.getParameter();
        names.put(arg.getTarget(), jsParam.getName());
        catchMap.put(catchBlock, jsCatch);


        push(jsCatch.getScope());
        accept(catchBlock);
        pop();

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    return false;
  }


  @Override
  public boolean visit(JLocalRef x, Context ctx) {
    expression = new JLocalRef(program, x.getSourceInfo(), x.getLocal());
    return false;
  }

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    print(CHARS_TRY);
    accept(x.getTryBlock());
    for (int i = 0, c = x.getCatchArgs().size(); i < c; ++i) {
      print(CHARS_CATCH);
      lparen();
      JLocalRef localRef = x.getCatchArgs().get(i);
      accept(localRef.getTarget());
      rparen();
      space();
      JBlock block = x.getCatchBlocks().get(i);
      accept(block);
    }

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          // T[] i$array = arr
          initializers.add(makeDeclaration(info, arrayVar, collection));
          // int i$index = 0
          initializers.add(makeDeclaration(info, indexVar, JIntLiteral.get(0)));
          // int i$max = i$array.length
          initializers.add(makeDeclaration(info, maxVar, new JArrayLength(info, new JLocalRef(info,
              arrayVar))));


          // i$index < i$max
          JExpression condition =
              new JBinaryOperation(info, JPrimitiveType.BOOLEAN, JBinaryOperator.LT, new JLocalRef(
                  info, indexVar), new JLocalRef(info, maxVar));


          // ++i$index
          JExpression increments = new JPrefixOperation(info, JUnaryOperator.INC,
              new JLocalRef(info, indexVar));


          // T elementVar = i$array[i$index];
          elementDecl.initializer =
              new JArrayRef(info, new JLocalRef(info, arrayVar), new JLocalRef(info, indexVar));
          body.addStmt(0, elementDecl);


          result = new JForStatement(info, initializers, condition, increments, body);
        } else {
          /**
           * <pre>
           * for (Iterator&lt;T&gt; i$iterator = collection.iterator(); i$iterator.hasNext();) {
           *   T elementVar = i$iterator.next();
           *   // user action
           * }
           * </pre>
           */
          CompilationUnitScope cudScope = scope.compilationUnitScope();
          ReferenceBinding javaUtilIterator = scope.getJavaUtilIterator();
          ReferenceBinding javaLangIterable = scope.getJavaLangIterable();
          MethodBinding iterator = javaLangIterable.getExactMethod(ITERATOR, NO_TYPES, cudScope);
          MethodBinding hasNext = javaUtilIterator.getExactMethod(HAS_NEXT, NO_TYPES, cudScope);
          MethodBinding next = javaUtilIterator.getExactMethod(NEXT, NO_TYPES, cudScope);
          JLocal iteratorVar =
              JProgram.createLocal(info, (elementVarName + "$iterator"), typeMap
                  .get(javaUtilIterator), false, curMethod.body);


          List<JStatement> initializers = Lists.newArrayListWithCapacity(1);
          // Iterator<T> i$iterator = collection.iterator()
          initializers.add(makeDeclaration(info, iteratorVar, new JMethodCall(info, collection,
              typeMap.get(iterator))));


          // i$iterator.hasNext()
          JExpression condition =
              new JMethodCall(info, new JLocalRef(info, iteratorVar), typeMap.get(hasNext));


          // T elementVar = (T) i$iterator.next();
          elementDecl.initializer =
              new JMethodCall(info, new JLocalRef(info, iteratorVar), typeMap.get(next));


          // Perform any implicit reference type casts (due to generics).
          // Note this occurs before potential unboxing.
          if (elementVar.getType() != javaLangObject) {
            TypeBinding collectionElementType = (TypeBinding) collectionElementTypeField.get(x);

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    public void endVisit(LocalDeclaration x, BlockScope scope) {
      try {
        SourceInfo info = makeSourceInfo(x);
        JLocal local = (JLocal) curMethod.locals.get(x.binding);
        assert local != null;
        JLocalRef localRef = new JLocalRef(info, local);
        JExpression initialization = pop(x.initialization);
        push(new JDeclarationStatement(info, localRef, initialization));
      } catch (Throwable e) {
        throw translateException(x, e);
      }

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              }
            } else {
              // Regular exception
              catchTypes.add(local.getType());
            }
            catchClauses.add(new JTryStatement.CatchClause(catchTypes, new JLocalRef(info, local),
                catchBlocks.get(i)));
          }
        }
        push(new JTryStatement(info, tryBlock, catchClauses, finallyBlock));
      } catch (Throwable e) {

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      //     add catch exception variable.
      JLocal catchVar = createLocalThrowable(info, "$caught_ex");


      JBlock catchBlock = new JBlock(info);
      catchBlock.addStmt(createAssignment(info, javaLangThrowable, exceptionVar, catchVar));
      catchBlock.addStmt(new JThrowStatement(info, new JLocalRef(info, exceptionVar)));


      catchClauses.add(new JTryStatement.CatchClause(clauseTypes, new JLocalRef(info, catchVar),
          catchBlock));


      // create finally block
      JBlock finallyBlock = new JBlock(info);
      for (int i = x.resources.length - 1; i >= 0; i--) {
        finallyBlock.addStmt(createCloseBlockFor(info,
            resourceVariables.get(i), exceptionVar));
      }


      // if (exception != null) throw exception
      JExpression exceptionNotNull = new JBinaryOperation(info, JPrimitiveType.BOOLEAN,
          JBinaryOperator.NEQ, new JLocalRef(info, exceptionVar), JNullLiteral.INSTANCE);
      finallyBlock.addStmt(new JIfStatement(info, exceptionNotNull,
          new JThrowStatement(info, new JLocalRef(info, exceptionVar)), null));


      // Stitch all together into a inner try block
      innerBlock.addStmt(new JTryStatement(info, tryBlock, catchClauses,
            finallyBlock));
      return innerBlock;

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       *     }
       *   }
       */


      JMethodCall safeCloseCall = new JMethodCall(info, null, SAFE_CLOSE_METHOD);
      safeCloseCall.addArg(0, new JLocalRef(info, resourceVar));
      safeCloseCall.addArg(1, new JLocalRef(info, exceptionVar));


      return new JBinaryOperation(info, javaLangThrowable, JBinaryOperator.ASG, new JLocalRef(info,
          exceptionVar), safeCloseCall).makeStatement();
    }

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