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

com.google.gwt.dev.js.ast.JsVars
A JavaScript var statement.

        // Add push and pop statements
        statements.add(idx, push(currentFunction));
        addPopAtEndOfBlock(x, false);


        // Add any needed variables
        JsVars vars;
        if (statements.get(0) instanceof JsVars) {
          vars = (JsVars) statements.get(0);
        } else {
          vars = new JsVars(currentFunction.getSourceInfo());
          statements.add(0, vars);
        }
        for (JsVar var : varsToAdd) {
          vars.add(var);
        }
      }
    }

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  private static void createVars(JsProgram program, JsBlock block,
      Collection<JsLiteral> toCreate, Map<JsLiteral, JsName> names) {
    if (toCreate.size() > 0) {
      // Create the pool of variable names.
      SourceInfo sourceInfo = program.createSourceInfoSynthetic(JsLiteralInterner.class);
      JsVars vars = new JsVars(sourceInfo);
      for (JsLiteral literal : toCreate) {
        JsVar var = new JsVar(sourceInfo, names.get(literal));
        var.setInitExpr(literal);
        vars.add(var);
      }
      block.getStatements().add(0, vars);
    }
  }

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        return;
      }
      System.out.println(JProgram.getFullName(method));


    } else if (statement instanceof JsVars) {
      JsVars vars = (JsVars) statement;
      for (JsVars.JsVar var : vars) {
        JField field = map.nameToField(var.getName());
        if (field != null) {
          System.out.println(field.getFullName());
        }

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   * <code>currentLivenessPredicate</code> but not by
   * <code>alreadyLoadedPredicate</code>.
   */
  private JsStatement removeSomeVars(JsVars stat, LivenessPredicate currentLivenessPredicate,
      LivenessPredicate alreadyLoadedPredicate) {
    JsVars newVars = new JsVars(stat.getSourceInfo());


    for (JsVar var : stat) {
      if (isLive(var, currentLivenessPredicate) && !isLive(var, alreadyLoadedPredicate)) {
        newVars.add(var);
      }
    }


    if (newVars.getNumVars() == stat.getNumVars()) {
      // no change
      return stat;
    }


    if (newVars.iterator().hasNext()) {
      /*
       * The new variables are non-empty; return them.
       */
      return newVars;
    } else {

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   * references.
   */
  private void defineJsLink() {
    SourceInfo info = jsProgram.createSourceInfoSynthetic(HandleCrossFragmentReferences.class);
    jslink = jsProgram.getScope().declareName("jslink");
    JsVars vars = new JsVars(info);
    JsVar var = new JsVar(info, jslink);
    var.setInitExpr(new JsObjectLiteral(info));
    vars.add(var);
    jsProgram.getFragmentBlock(0).getStatements().add(0, vars);
  }

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       * of this transformation has alternating var lists and assignment
       * statements. The currentVar variable holds the most recently inserted
       * statement, if that statement was a JsVars; otherwise it holds null.
       */


      JsVars currentVar = null;
      Iterator<JsVar> varsIterator = x.iterator();
      while (varsIterator.hasNext()) {
        JsVar var = varsIterator.next();
        if (namesToPredefine.contains(var.getName())) {
          // The var was predefined
          if (var.getInitExpr() != null) {
            // If it has an initializer, add an assignment statement
            JsBinaryOperation asg =
                new JsBinaryOperation(var.getSourceInfo(), JsBinaryOperator.ASG, makeRefViaJslink(
                    var.getName(), var.getSourceInfo()), var.getInitExpr());
            ctx.insertBefore(asg.makeStmt());
            currentVar = null;
          }
        } else {
          // The var was not predefined; add it to a var list
          if (currentVar == null) {
            currentVar = new JsVars(x.getSourceInfo());
            ctx.insertBefore(currentVar);
          }
          currentVar.add(var);
        }
      }


      ctx.removeMe();
    }

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          x !=  program.getTypeJavaLangString()) {
        generateClassSetup(x, globalStmts);
      }


      // setup fields
      JsVars vars = new JsVars(x.getSourceInfo());
      for (int i = 0; i < jsFields.size(); ++i) {
        JsNode node = jsFields.get(i);
        if (node instanceof JsVar) {
          vars.add((JsVar) node);
        } else {
          assert (node instanceof JsStatement);
          JsStatement stmt = (JsStatement) node;
          globalStmts.add(stmt);
          typeForStatMap.put(stmt, x);
        }
      }


      if (!vars.isEmpty()) {
        globalStmts.add(vars);
      }


      if (typeOracle.isInteropEnabled() &&
          typeOracle.isInstantiatedType(x) && !typeOracle.isJavaScriptObject(x) &&

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        handleClinit(clinitFunc, null);
        globalStmts.add(clinitFunc.makeStmt());
      }


      // setup fields
      JsVars vars = new JsVars(x.getSourceInfo());
      for (int i = 0; i < jsFields.size(); ++i) {
        vars.add(jsFields.get(i));
      }


      if (!vars.isEmpty()) {
        globalStmts.add(vars);
      }


      if (typeOracle.isInteropEnabled()) {
        generateExports(x, exportStmts);

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       * Note: it's fine to use the same JS ident to represent two different
       * Java locals of the same name since they could never conflict with each
       * other in Java. We use the alreadySeen set to make sure we don't declare
       * the same-named local var twice.
       */
      JsVars vars = new JsVars(x.getSourceInfo());
      Set<String> alreadySeen = Sets.newHashSet();
      for (int i = 0; i < locals.size(); ++i) {
        JsName name = names.get(x.getLocals().get(i));
        String ident = name.getIdent();
        if (!alreadySeen.contains(ident)
            // Catch block params don't need var declarations
            && !catchParamIdentifiers.contains(name)) {
          alreadySeen.add(ident);
          vars.add(new JsVar(x.getSourceInfo(), name));
        }
      }


      if (!vars.isEmpty()) {
        jsFunc.getBody().getStatements().add(0, vars);
      }


      push(jsFunc);
    }

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    public boolean visit(JMethod x, Context ctx) {
      if (x.isAbstract()) {
        return false;
      }
      currentMethod = x;
      pendingLocals = new JsVars(x.getSourceInfo());
      return true;
    }

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