Package com.google.gwt.dev.js.ast

Examples of com.google.gwt.dev.js.ast.JsNameRef


    private void generateVTables(JClassType x, List<JsStatement> globalStmts) {
      for (JMethod method : x.getMethods()) {
        SourceInfo sourceInfo = method.getSourceInfo().makeChild(
            GenerateJavaScriptVisitor.class, "vtable assignment");
        if (!method.isStatic() && !method.isAbstract()) {
          JsNameRef lhs = polymorphicNames.get(method).makeRef(sourceInfo);
          lhs.setQualifier(globalTemp.makeRef(sourceInfo));
          JsNameRef rhs = names.get(method).makeRef(sourceInfo);
          JsExpression asg = createAssignment(lhs, rhs);
          JsExprStmt asgStat = new JsExprStmt(x.getSourceInfo(), asg);
          globalStmts.add(asgStat);
          vtableInitForMethodMap.put(asgStat, method);
        }
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          : jsProgram.getFalseLiteral());
    }

    // @Override
    public void endVisit(JBreakStatement x, Context ctx) {
      JsNameRef labelRef = null;
      if (x.getLabel() != null) {
        JsLabel label = (JsLabel) pop(); // label
        labelRef = label.getName().makeRef();
      }
      push(new JsBreak(labelRef));
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      push(new JsConditional(ifTest, thenExpr, elseExpr));
    }

    // @Override
    public void endVisit(JContinueStatement x, Context ctx) {
      JsNameRef labelRef = null;
      if (x.getLabel() != null) {
        JsLabel label = (JsLabel) pop(); // label
        labelRef = label.getName().makeRef();
      }
      push(new JsContinue(labelRef));
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        var.setInitExpr(rhs);
        push(var);
      } else {
        // for non-statics, only setup an assignment if needed
        if (rhs != null) {
          JsNameRef fieldRef = name.makeRef();
          fieldRef.setQualifier(globalTemp.makeRef());
          JsExpression asg = createAssignment(fieldRef, rhs);
          push(new JsExprStmt(asg));
        } else {
          push(null);
        }
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    // @Override
    public void endVisit(JFieldRef x, Context ctx) {
      JField field = x.getField();
      JsName jsFieldName = getName(field);
      JsNameRef nameRef = jsFieldName.makeRef();
      JsExpression curExpr = nameRef;

      /*
       * Note: the comma expressions here would cause an illegal tree state if
       * the result expression ended up on the lhs of an assignment. A hack in
       * in endVisit(JBinaryOperation) rectifies the situation.
       */

      // See if we need a clinit
      JsInvocation jsInvocation = maybeCreateClinitCall(field);
      if (jsInvocation != null) {
        curExpr = createCommaExpression(jsInvocation, curExpr);
      }

      if (x.getInstance() != null) {
        JsExpression qualifier = (JsExpression) pop();
        if (field.isStatic()) {
          // unnecessary qualifier, create a comma expression
          curExpr = createCommaExpression(qualifier, curExpr);
        } else {
          // necessary qualifier, qualify the name ref
          nameRef.setQualifier(qualifier);
        }
      }

      push(curExpr);
    }
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        push(null);
        return;
      }

      JsExpression initializer = (JsExpression) pop(); // initializer
      JsNameRef localRef = (JsNameRef) pop(); // localRef

      JsBinaryOperation binOp = new JsBinaryOperation(JsBinaryOperator.ASG,
          localRef, initializer);

      push(binOp.makeStmt());
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      JMethod method = x.getTarget();
      JsInvocation jsInvocation = new JsInvocation();

      popList(jsInvocation.getArguments(), x.getArgs().size()); // args

      JsNameRef qualifier;
      JsExpression unnecessaryQualifier = null;
      if (method.isStatic()) {
        if (x.getInstance() != null) {
          unnecessaryQualifier = (JsExpression) pop(); // instance
        }
        qualifier = getName(method).makeRef();
      } else {
        if (x.isStaticDispatchOnly()) {
          /*
           * Dispatch statically (odd case). This happens when a call that must
           * be static is targeting an instance method that could not be
           * transformed into a static. For example, making a super call into a
           * native method currently causes this, because we cannot currently
           * staticify native methods.
           *
           * Have to use a "call" construct.
           */
          JsName callName = objectScope.declareName("call");
          callName.setObfuscatable(false);
          qualifier = callName.makeRef();
          qualifier.setQualifier(getName(method).makeRef());
          jsInvocation.getArguments().add(0, (JsExpression) pop()); // instance
        } else {
          // Dispatch polymorphically (normal case).
          qualifier = getPolyName(method).makeRef();
          qualifier.setQualifier((JsExpression) pop()); // instance
        }
      }
      jsInvocation.setQualifier(qualifier);
      push(createCommaExpression(unnecessaryQualifier, jsInvocation));
    }
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    }

    // @Override
    public void endVisit(JNewInstance x, Context ctx) {
      JsNew newOp = new JsNew();
      JsNameRef nameRef = getName(x.getType()).makeRef();
      newOp.setConstructorExpression(nameRef);
      push(newOp);
    }
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        seedFunc.setBody(body);
        globalStmts.add(seedFunc.makeStmt());

        // setup prototype, assign to temp
        // _ = com_example_foo_Foo.prototype = new com_example_foo_FooSuper();
        JsNameRef lhs = prototype.makeRef();
        lhs.setQualifier(seedFuncName.makeRef());
        JsExpression rhs;
        if (x.extnds != null) {
          JsNew newExpr = new JsNew();
          newExpr.setConstructorExpression(getName(x.extnds).makeRef());
          rhs = newExpr;
        } else {
          rhs = new JsObjectLiteral();
        }
        JsExpression protoAsg = createAssignment(lhs, rhs);
        JsExpression tmpAsg = createAssignment(globalTemp.makeRef(), protoAsg);
        globalStmts.add(tmpAsg.makeStmt());
      } else {
        /*
         * MAGIC: java.lang.String is implemented as a JavaScript String
         * primitive with a modified prototype.
         */
        JsNameRef rhs = prototype.makeRef();
        rhs.setQualifier(jsProgram.getRootScope().declareName("String").makeRef());
        JsExpression tmpAsg = createAssignment(globalTemp.makeRef(), rhs);
        globalStmts.add(tmpAsg.makeStmt());
      }
    }
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        // _.toString = function(){return this.java_lang_Object_toString();}

        // lhs
        JsName lhsName = objectScope.declareName("toString");
        lhsName.setObfuscatable(false);
        JsNameRef lhs = lhsName.makeRef();
        lhs.setQualifier(globalTemp.makeRef());

        // rhs
        JsInvocation call = new JsInvocation();
        JsNameRef toStringRef = new JsNameRef(getPolyName(toStringMeth));
        toStringRef.setQualifier(new JsThisRef());
        call.setQualifier(toStringRef);
        JsReturn jsReturn = new JsReturn(call);
        JsFunction rhs = new JsFunction(topScope);
        JsBlock body = new JsBlock();
        body.getStatements().add(jsReturn);
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