Examples of com.google.javascript.jscomp.ReferenceCollectingCallback.ReferenceCollection

Package com.google.javascript.jscomp.ReferenceCollectingCallback

Examples of com.google.javascript.jscomp.ReferenceCollectingCallback.ReferenceCollection

com.google.javascript.jscomp.ReferenceCollectingCallback.ReferenceCollection

          ReferenceCollectingCallback.DO_NOTHING_BEHAVIOR);


    NodeTraversal.traverse(compiler, root, callback);


    for (Var variable : callback.getAllSymbols()) {
      ReferenceCollection referenceCollection =
          callback.getReferences(variable);


      VariableVisibility visibility;


      if (variableIsParameter(variable)) {
        visibility = VariableVisibility.PARAMETER;
      } else if (variable.isLocal()) {
        if (referenceCollection.isEscaped()) {
          visibility = VariableVisibility.CAPTURED_LOCAL;
        } else {
          visibility = VariableVisibility.LOCAL;
        }
      } else if (variable.isGlobal()) {

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        if (isVarInlineForbidden(v)) {
            continue;
        }


        ReferenceCollection referenceInfo = referenceMap.getReferences(v);


        if (isInlinableObject(referenceInfo.references)) {
            // Blacklist the object itself, as well as any other values
            // that it refers to, since they will have been moved around.
            staleVars.add(v);


            Reference declaration = referenceInfo.references.get(0);
            Reference init = referenceInfo.getInitializingReference();


            // Split up the object into individual variables if the object
            // is never referenced directly in full.
            splitObject(v, declaration, init, referenceInfo);
        }

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    private void collectAliasCandidates(NodeTraversal t,
        ReferenceMap referenceMap) {
      if (mode != Mode.CONSTANTS_ONLY) {
        for (Iterator<Var> it = t.getScope().getVars(); it.hasNext();) {
          Var v = it.next();
          ReferenceCollection referenceInfo = referenceMap.getReferences(v);


          // NOTE(nicksantos): Don't handle variables that are never used.
          // The tests are much easier to write if you don't, and there's
          // another pass that handles unused variables much more elegantly.
          if (referenceInfo != null && referenceInfo.references.size() >= 2 &&
              referenceInfo.isWellDefined() &&
              referenceInfo.isAssignedOnceInLifetime()) {
            Reference init = referenceInfo.getInitializingReference();
            Node value = init.getAssignedValue();
            if (value != null && value.getType() == Token.NAME) {
              aliasCandidates.put(value, new AliasCandidate(v, referenceInfo));
            }
          }

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      boolean maybeModifiedArguments =
          maybeEscapedOrModifiedArguments(t.getScope(), referenceMap);
      for (Iterator<Var> it = t.getScope().getVars(); it.hasNext();) {
        Var v = it.next();


        ReferenceCollection referenceInfo = referenceMap.getReferences(v);


        // referenceInfo will be null if we're in constants-only mode
        // and the variable is not a constant.
        if (referenceInfo == null || isVarInlineForbidden(v)) {
          // Never try to inline exported variables or variables that
          // were not collected or variables that have already been inlined.
          continue;
        } else if (isInlineableDeclaredConstant(v, referenceInfo)) {
          Reference init = referenceInfo.getInitializingReferenceForConstants();
          Node value = init.getAssignedValue();
          inlineDeclaredConstant(v, value, referenceInfo.references);
          staleVars.add(v);
        } else if (mode == Mode.CONSTANTS_ONLY) {
          // If we're in constants-only mode, don't run more aggressive

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    private boolean maybeEscapedOrModifiedArguments(
        Scope scope, ReferenceMap referenceMap) {
      if (scope.isLocal()) {
        Var arguments = scope.getArgumentsVar();
        ReferenceCollection refs = referenceMap.getReferences(arguments);
        if (refs != null && !refs.references.isEmpty()) {
          for (Reference ref : refs.references) {
            Node refNode = ref.getNode();
            Node refParent = ref.getParent();
            // Any reference that is not a read of the arguments property

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    }
  }


  private void replaceReferences(String varName, InputId inputId,
      ReferenceCollection newSourceCollection) {
    ReferenceCollection combined = new ReferenceCollection();
    List<Reference> combinedRefs = combined.references;
    ReferenceCollection oldCollection = refMap.get(varName);
    refMap.put(varName, combined);
    if (oldCollection == null) {
      combinedRefs.addAll(newSourceCollection.references);
      return;
    }

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            ReferenceCollectingCallback.DO_NOTHING_BEHAVIOR);


      NodeTraversal.traverse(compiler, root, callback);


      for (Var variable : callback.getAllSymbols()) {
        ReferenceCollection referenceCollection =
            callback.getReferences(variable);


        for (Reference reference : referenceCollection.references) {
          Node referenceNameNode = reference.getNode();

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          new ReferenceCollectingCallback(compiler,
              ReferenceCollectingCallback.DO_NOTHING_BEHAVIOR,
              Predicates.<Var>equalTo(aliasVar));
      (new NodeTraversal(compiler, collector)).traverseAtScope(scope);


      ReferenceCollection aliasRefs = collector.getReferences(aliasVar);
      if (aliasRefs.isWellDefined()
          && aliasRefs.firstReferenceIsAssigningDeclaration()
          && aliasRefs.isAssignedOnceInLifetime()) {
        // The alias is well-formed, so do the inlining now.
        int size = aliasRefs.references.size();
        Set<Node> newNodes = Sets.newHashSetWithExpectedSize(size - 1);
        for (int i = 1; i < size; i++) {
          ReferenceCollectingCallback.Reference aliasRef =

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