Examples of JsExpression

com.google.gwt.dev.js.ast.JsExpression
An abstract base class for all JavaScript expressions.
com.intellij.lang.javascript.psi.JSExpression
org.hisrc.jscm.codemodel.expression.JSExpression

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

      JsName toName = getScope().declareName(fromName);
      JsVars.JsVar toVar = new JsVars.JsVar(makeSourceInfo(fromVar), toName);


      Node fromInit = fromVar.getFirstChild();
      if (fromInit != null) {
        JsExpression toInit = mapExpression(fromInit);
        toVar.setInitExpr(toInit);
      }
      toVars.add(toVar);


      fromVar = fromVar.getNext();

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

 */
public class JsFirstExpressionVisitor extends JsVisitor {


  public static boolean exec(JsExprStmt statement) {
    JsFirstExpressionVisitor visitor = new JsFirstExpressionVisitor();
    JsExpression expression = statement.getExpression();
    // Pure function declarations do not need parentheses
    if (expression instanceof JsFunction) {
      return false;
    }
    visitor.accept(statement.getExpression());

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

   * @return a JsExpression representing all expressions that would have been
   *         evaluated by the statement
   */
  private static JsExpression hoistedExpression(JsProgram program,
      JsStatement statement, List<JsName> localVariableNames) {
    JsExpression expression;
    if (statement instanceof JsExprStmt) {
      // Extract the expression
      JsExprStmt exprStmt = (JsExprStmt) statement;
      expression = exprStmt.getExpression();


    } else if (statement instanceof JsReturn) {
      // Extract the return value
      JsReturn ret = (JsReturn) statement;
      expression = ret.getExpr();
      if (expression == null) {
        expression = program.getUndefinedLiteral();
      }


    } else if (statement instanceof JsVars) {
      // Create a comma expression for variable initializers
      JsVars vars = (JsVars) statement;


      // Rely on comma expression cleanup to remove this later.
      expression = program.getNullLiteral();


      for (JsVar var : vars) {
        // Record the locally-defined variable
        localVariableNames.add(var.getName());


        // Extract the initialization expression
        JsExpression init = var.getInitExpr();
        if (init != null) {
          SourceInfo sourceInfo = var.getSourceInfo().makeChild(
              JsInliner.class, "Hoisted initializer into inline site");
          JsBinaryOperation assignment = new JsBinaryOperation(sourceInfo,
              JsBinaryOperator.ASG);

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

       * will vary between call sites, based on whether or not the invocation's
       * arguments can be repeated without ill effect.
       */
      List<JsName> requiredOrder = new ArrayList<JsName>();
      for (int i = 0; i < arguments.size(); i++) {
        JsExpression e = arguments.get(i);
        JsParameter p = callee.getParameters().get(i);


        if (isVolatile(program, e, callee)) {
          requiredOrder.add(p.getName());
        }

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

         * Eliminate the pattern (localVar = expr, localVar). This tends to
         * occur when a method interacted with pruned fields or had statements
         * removed.
         */
        JsName assignmentRef = null;
        JsExpression expr = null;
        JsName returnRef = null;


        if (x.getArg1() instanceof JsBinaryOperation) {
          JsBinaryOperation op = (JsBinaryOperation) x.getArg1();
          if (op.getOperator() == JsBinaryOperator.ASG

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

     * This normalizes the comma expressions into multiple statements and
     * removes statements with no side-effects.
     */
    @Override
    public void endVisit(JsExprStmt x, JsContext<JsStatement> ctx) {
      JsExpression e = x.getExpression();


      // We will occasionally create JsExprStmts that have no side-effects.
      if (ctx.canRemove() && !x.getExpression().hasSideEffects()) {
        ctx.removeMe();
        return;
      }


      List<JsExprStmt> statements = new ArrayList<JsExprStmt>();


      /*
       * Assemble the expressions back into a list of JsExprStmts. We will
       * iteratively disassemble the nested comma expressions, stopping when the
       * LHS is not a comma expression.
       */
      while (e instanceof JsBinaryOperation) {
        JsBinaryOperation op = (JsBinaryOperation) e;


        if (!op.getOperator().equals(JsBinaryOperator.COMMA)) {
          break;
        }


        /*
         * We can ignore intermediate expressions as long as they have no
         * side-effects.
         */
        if (op.getArg2().hasSideEffects()) {
          statements.add(0, op.getArg2().makeStmt());
        }


        e = op.getArg1();
      }


      /*
       * We know the return value from the original invocation was ignored, so
       * it may be possible to ignore the final expressions as long as it has no
       * side-effects.
       */
      if (e.hasSideEffects()) {
        statements.add(0, e.makeStmt());
      }


      if (statements.size() == 0) {
        // The expression contained no side effects at all.
        if (ctx.canRemove()) {

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

      if (inlining.contains(invokedFunction)) {
        return;
      }


      inlining.push(invokedFunction);
      JsExpression op = process(x, callerFunction, invokedFunction);


      if (x != op) {
        /*
         * See if any further inlining can be performed in the current context.
         * By attempting to maximize the level of inlining now, we can reduce

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

         * therefore not referenced by any other AST nodes. Consider the case of
         * a common, delegating function. If the hoisted expressions were not
         * distinct objects, it would not be possible to substitute different
         * JsNameRefs at different call sites.
         */
        JsExpression h = hoistedExpression(program, statement,
            localVariableNames);
        if (h == null) {
          return x;
        }


        if (isReturnStatement(statement)) {
          sawReturnStatement = true;
          hoisted.add(h);
        } else if (hasSideEffects(Collections.singletonList(h))) {
          hoisted.add(h);
        }
      }


      /*
       * If the inlined method has no return statement, synthesize an undefined
       * reference. It will be reclaimed if the method call is from a
       * JsExprStmt.
       */
      if (!sawReturnStatement) {
        hoisted.add(program.getUndefinedLiteral());
      }


      assert (hoisted.size() > 0);


      /*
       * Build up the new comma expression from right-to-left; building the
       * rightmost comma expressions first. Bootstrapping with i.previous()
       * ensures that this logic will function correctly in the case of a single
       * expression.
       */
      SourceInfo sourceInfo = x.getSourceInfo().makeChild(
          InliningVisitor.class, "Inlined invocation");
      ListIterator<JsExpression> i = hoisted.listIterator(hoisted.size());
      JsExpression op = i.previous();
      while (i.hasPrevious()) {
        JsBinaryOperation outerOp = new JsBinaryOperation(sourceInfo,
            JsBinaryOperator.COMMA);
        outerOp.setArg1(i.previous());
        outerOp.setArg2(op);

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

            "Mismatch on parameters and arguments");
      }


      for (int i = 0; i < parameters.size(); i++) {
        JsParameter p = parameters.get(i);
        JsExpression e = arguments.get(i);
        paramsToArgsMap.put(p.getName(), e);
      }
    }

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

    public void endVisit(JsNameRef x, JsContext<JsExpression> ctx) {
      if (x.getQualifier() != null) {
        return;
      }


      JsExpression replacement = tryGetReplacementExpression(
          x.getSourceInfo().makeChild(NameRefReplacerVisitor.class,
              "Inlined expression"), x.getName());


      if (replacement != null) {
        ctx.replaceMe(replacement);

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