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Replaces literal {} created lookup tables with Object.create

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This commit is contained in:
Yury Delendik 2016-01-27 11:04:13 -06:00
parent d6adf84159
commit 2edf2792dc
18 changed files with 106 additions and 104 deletions
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17
src/core/obj.js
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@ -229,9 +229,6 @@ var Catalog = (function CatalogClosure() {
var nameTree = new NameTree(nameTreeRef, xref);
var names = nameTree.getAll();
for (var name in names) {
if (!names.hasOwnProperty(name)) {
continue;
}
dests[name] = fetchDestination(names[name]);
}
}
@ -291,7 +288,7 @@ var Catalog = (function CatalogClosure() {
var currentLabel = '', currentIndex = 1;
for (var i = 0, ii = this.numPages; i < ii; i++) {
if (nums.hasOwnProperty(i)) {
if (i in nums) {
var labelDict = nums[i];
assert(isDict(labelDict), 'The PageLabel is not a dictionary.');
@ -365,12 +362,9 @@ var Catalog = (function CatalogClosure() {
var nameTree = new NameTree(nameTreeRef, xref);
var names = nameTree.getAll();
for (var name in names) {
if (!names.hasOwnProperty(name)) {
continue;
}
var fs = new FileSpec(names[name], xref);
if (!attachments) {
attachments = {};
attachments = Object.create(null);
}
attachments[stringToPDFString(name)] = fs.serializable;
}
@ -399,9 +393,6 @@ var Catalog = (function CatalogClosure() {
var nameTree = new NameTree(obj.getRaw('JavaScript'), xref);
var names = nameTree.getAll();
for (var name in names) {
if (!names.hasOwnProperty(name)) {
continue;
}
// We don't really use the JavaScript right now. This code is
// defensive so we don't cause errors on document load.
var jsDict = names[name];
@ -602,7 +593,7 @@ var XRef = (function XRefClosure() {
function XRef(stream, password) {
this.stream = stream;
this.entries = [];
this.xrefstms = {};
this.xrefstms = Object.create(null);
// prepare the XRef cache
this.cache = [];
this.password = password;
@ -1239,7 +1230,7 @@ var NameOrNumberTree = (function NameOrNumberTreeClosure() {
NameOrNumberTree.prototype = {
getAll: function NameOrNumberTree_getAll() {
var dict = {};
var dict = Object.create(null);
if (!this.root) {
return dict;
}