Examples of com.google.caja.parser.js.Reference

com.google.caja.parser.js.Reference
An expression that evaluates to the value associated with the property of the same name in either the current scope chain, or the object to the left of a dot-operator. @author mikesamuel@gmail.com

        obj, "props",
        mapToJsArray(
            data.properties,
            new Function<CssPropBit, Expression>() {
              public Expression apply(CssPropBit bit) {
                return new Reference(new Identifier(unk, bit.name()));
              }
            }),
        ignoreKeys);
    appendIfNotEmptyOrIgnored(
        obj, "fns",

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  private static Statement export(String key, Expression e) {
    FilePosition unk = FilePosition.UNKNOWN;
    // The html4[@k] assignment is an explicit export for Closure Compiler
    return (Statement) QuasiBuilder.substV(
            "{ html4.@i = @e; html4[@k] = html4.@i; }",
            "i", new Reference(new Identifier(unk, key)),
            "k", new StringLiteral(unk, key),
            "e", e);
  }

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      keys.add(new StringLiteral(unk, quoted));
      values.add(new IntegerLiteral(unk, valueMaker.apply(e)));
    }
    return export(key, (Expression) QuasiBuilder.substV(
        "({ @k*: @v* })",
        "i", new Reference(new Identifier(unk, key)),
        "k", new ParseTreeNodeContainer(keys),
        "v", new ParseTreeNodeContainer(values)));
  }

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        // TODO(mikesamuel): choose a guaranteed non-interfering name.
        String name = "$_$__litpool__" + decls.size() + "$_$";
        decls.add(new Declaration(
            pos, new Identifier(pos, name), v.uses.get(0).node));
        for (AncestorChain<Literal> use : v.uses) {
          Reference ref = new Reference(
              new Identifier(use.node.getFilePosition(), name));
          use.parent.cast(MutableParseTreeNode.class).node
              .replaceChild(ref, use.node);
        }
      }

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  private int longestKeyLength = 0;


  private static final FilePosition UNK = FilePosition.UNKNOWN;


  public ParseTreeKB() {
    addFactInt(new Reference(new Identifier(UNK, "undefined")), Fact.UNDEFINED);
    addFactInt(new Reference(new Identifier(UNK, "this")), Fact.GLOBAL);
  }

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      boolean throwsOnUndefined, Result out) {
    StringBuilder sb = new StringBuilder();
    sb.append('(');
    Expression obj = ma.children().get(0);
    optimize(s, obj, false, false, false, false, out);
    Reference prop = (Reference) ma.children().get(1);
    if (out.node != obj) {
      ma = Operation.createInfix(
          Operator.MEMBER_ACCESS, (Expression) out.node, prop);
    }
    sb = addDigest(out.digest, sb);
    int objDigestEnd = sb != null ? sb.length() : -1;
    if (sb != null) {
      nodeDigest(ma.children().get(1), sb);
      nodeTail(ma, sb);
    }
    String digest = sb != null ? sb.toString() : null;
    out.node = ma;
    out.digest = digest;
    if (digest != null) {
      if (!isLhs) {
        Fact f = getFact(digest);
        if (f != null && f.isSubstitutable(isFuzzy)) {
          out.node = f.value.clone();
          out.digest = nodeDigest(out.node);
          return;
        }
      }
      // window.addEventListener -> addEventListener
      String objDigest = digest.substring(1, objDigestEnd);
      Pair<Expression, Fact> objFe = facts.get(objDigest);
      if (objFe != null && objFe.b.isGlobal()
          && s.isOuter(prop.getIdentifierName())) {
        String propDigest = nodeDigest(prop);
        boolean canSimplify = false;
        if (isLhs || throwsOnUndefined) {
          // If it's being set, we don't need to worry about undefined global
          // errors, and we don't need to worry if the containing expression

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  }


  private static Expression withTopRef(Expression e, String lhs) {
    if (e instanceof Reference) {
      return Operation.createInfix(
          Operator.MEMBER_ACCESS, new Reference(new Identifier(UNK, lhs)), e);
    } else {
      Operation op = (Operation) e;
      List<? extends Expression> operands = op.children();
      return Operation.create(
          e.getFilePosition(), op.getOperator(),

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                  pos, xoper, xoperands.get(0),
                  optimizeExpressionFlow(
                      Operation.createTernary(
                          c, xoperands.get(1), yoperands.get(1))));
            } else {
              Reference xref = (Reference) xoperands.get(1);
              Reference yref = (Reference) yoperands.get(1);
              StringLiteral xname = StringLiteral.valueOf(
                  xref.getFilePosition(), xref.getIdentifierName());
              StringLiteral yname = StringLiteral.valueOf(
                  yref.getFilePosition(), yref.getIdentifierName());
              return Operation.create(
                  pos, Operator.SQUARE_BRACKET,
                  xoperands.get(0),
                  optimizeExpressionFlow(
                       Operation.createTernary(

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        "id", id));
    return id;
  }


  public Reference declareStartOfScopeTemp() {
    return new Reference(declareStartOfScopeTempVariable());
  }

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            continue;
          }
        }
        QuasiNode keyQuasi = build(
            keyIdent != null
            ? new Reference(new Identifier(FilePosition.UNKNOWN, keyIdent))
            : key);
        propQuasis.add(new SinglePropertyQuasi(keyQuasi, build(value)));
      } else {
        // TODO: support getters and setters in object quasis
        throw new UnsupportedOperationException(prop.getClass().getName());

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