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

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

      // Iterate over each type in the right order.
      markPosition(globalStmts, "Program", Type.PROGRAM_START);
      for (JDeclaredType type : topologicallySortedBodyTypes) {
        markPosition(globalStmts, type.getName(), Type.CLASS_START);
        accept(type);
        JsVars classLiteralVars = new JsVars(jsProgram.getSourceInfo());
        maybeGenerateClassLiteral(type, classLiteralVars);
        if (!classLiteralVars.isEmpty()) {
          globalStmts.add(classLiteralVars);
        }
        markPosition(globalStmts, type.getName(), Type.CLASS_END);
      }
      markPosition(globalStmts, "Program", Type.PROGRAM_END);

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      return false;
    }


    private Set<JDeclaredType> generatePreamble(JProgram program, List<JsStatement> globalStmts) {
      // Reserve the "_" identifier.
      JsVars vars = new JsVars(jsProgram.getSourceInfo());
      vars.add(new JsVar(jsProgram.getSourceInfo(), globalTemp));
      globalStmts.add(vars);


      // Generate immortal types in the preamble.
      generateImmortalTypes(vars);

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      }
    }


    private void generateClassLiterals(List<JsStatement> globalStmts,
        Iterable<? extends JType> orderedTypes) {
      JsVars vars = new JsVars(jsProgram.getSourceInfo());
      for (JType type : orderedTypes) {
        maybeGenerateClassLiteral(type, vars);
      }
      if (!vars.isEmpty()) {
        globalStmts.add(vars);
      }
    }

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      // var gwtOnLoad = ModuleUtils.gwtOnLoad;
      JsName gwtOnLoad = topScope.findExistingUnobfuscatableName("gwtOnLoad");
      JsVar varGwtOnLoad = new JsVar(sourceInfo, gwtOnLoad);
      varGwtOnLoad.setInitExpr(createAssignment(gwtOnLoad.makeRef(sourceInfo),
          indexedFunctions.get("ModuleUtils.gwtOnLoad").getName().makeRef(sourceInfo)));
      globalStmts.add(new JsVars(sourceInfo, varGwtOnLoad));


      // ModuleUtils.addInitFunctions(init1, init2,...)
      List<JsExpression> arguments = Lists.newArrayList();
      for (JMethod entryPointMethod : program.getEntryMethods()) {
        JsFunction entryFunction = getJsFunctionFor(entryPointMethod);

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      SourceInfo sourceInfo = SourceOrigin.UNKNOWN;
      JsInvocation invocation = constructInvocation(indexedFunctionName, args);
      JsVar var = new JsVar(sourceInfo, assignToVariableName);
      var.setInitExpr(invocation);
      JsVars entryVars = new JsVars(sourceInfo);
      entryVars.add(var);
      return entryVars;
    }

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  }


  private JsVars mapVar(Node varNode) throws JsParserException {
    SourceInfo info = makeSourceInfo(varNode);
    pushSourceInfo(info);
    JsVars toVars = new JsVars(info);
    Node fromVar = varNode.getFirstChild();
    while (fromVar != null) {
      // Use a conservative name allocation strategy that allocates all names
      // from the function's scope, even the names of properties in field
      // literals.
      //
      String fromName = fromVar.getString();
      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();
    }


    popSourceInfo();

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      }
    }


    @Override
    public void endVisit(JsVars x, JsContext ctx) {
      JsVars strippedVars = new JsVars(x.getSourceInfo());
      boolean mustReplace = false;
      for (JsVar var : x) {
        JsVar strippedVar = new JsVar(var.getSourceInfo(), var.getName());
        strippedVars.add(strippedVar);
        if (var.getInitExpr() != null) {
          mustReplace = true;
        }
      }
      if (mustReplace) {

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  private JsStatement visitGlobalVar(JsVar x) {
    JsName name = x.getName();


    if (!moveName(name)) {
      // We can't move it, but let's put the initializer on a separate line for readability.
      JsVars vars = new JsVars(x.getSourceInfo());
      vars.add(x);
      return vars;
    }


    // Convert the initializer from a var to an assignment.
    JsNameRef newName = name.makeRef(x.getSourceInfo());

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    // Let's list them vertically for readability.
    List<JsStatement> inits = Lists.newArrayList();
    for (JsName name : namespaces) {
      JsVar var = new JsVar(SourceOrigin.UNKNOWN, name);
      var.setInitExpr(new JsObjectLiteral(SourceOrigin.UNKNOWN));
      JsVars vars = new JsVars(SourceOrigin.UNKNOWN);
      vars.add(var);
      inits.add(vars);
    }
    return inits;
  }

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      // The body can't be empty if we have local variables to create
      assert !statements.isEmpty();


      // Find or create the JsVars as the first statement
      SourceInfo sourceInfo = x.getSourceInfo();
      JsVars vars;
      if (statements.get(0) instanceof JsVars) {
        vars = (JsVars) statements.get(0);
      } else {
        vars = new JsVars(sourceInfo);
        statements.add(0, vars);
      }


      // Add all variables
      for (JsName name : newLocalVariables) {
        vars.add(new JsVar(sourceInfo, name));
      }
    }

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