/**
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* @licstart The following is the entire license notice for the
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* JavaScript code in this page
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*
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* Copyright 2022 Mozilla Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @licend The above is the entire license notice for the
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* JavaScript code in this page
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*/
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.RefSetCache = exports.RefSet = exports.Ref = exports.Name = exports.EOF = exports.Dict = exports.Cmd = exports.CIRCULAR_REF = void 0;
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exports.clearPrimitiveCaches = clearPrimitiveCaches;
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exports.isCmd = isCmd;
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exports.isDict = isDict;
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exports.isName = isName;
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exports.isRefsEqual = isRefsEqual;
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var _util = require("../shared/util.js");
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const CIRCULAR_REF = Symbol("CIRCULAR_REF");
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exports.CIRCULAR_REF = CIRCULAR_REF;
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const EOF = Symbol("EOF");
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exports.EOF = EOF;
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const Name = function NameClosure() {
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let nameCache = Object.create(null);
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class Name {
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constructor(name) {
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this.name = name;
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}
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static get(name) {
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return nameCache[name] || (nameCache[name] = new Name(name));
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}
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static _clearCache() {
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nameCache = Object.create(null);
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}
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}
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return Name;
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}();
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exports.Name = Name;
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const Cmd = function CmdClosure() {
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let cmdCache = Object.create(null);
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class Cmd {
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constructor(cmd) {
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this.cmd = cmd;
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}
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static get(cmd) {
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return cmdCache[cmd] || (cmdCache[cmd] = new Cmd(cmd));
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}
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static _clearCache() {
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cmdCache = Object.create(null);
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}
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}
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return Cmd;
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}();
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exports.Cmd = Cmd;
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const nonSerializable = function nonSerializableClosure() {
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return nonSerializable;
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};
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class Dict {
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constructor(xref = null) {
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this._map = Object.create(null);
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this.xref = xref;
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this.objId = null;
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this.suppressEncryption = false;
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this.__nonSerializable__ = nonSerializable;
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}
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assignXref(newXref) {
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this.xref = newXref;
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}
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get size() {
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return Object.keys(this._map).length;
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}
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get(key1, key2, key3) {
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let value = this._map[key1];
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if (value === undefined && key2 !== undefined) {
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value = this._map[key2];
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if (value === undefined && key3 !== undefined) {
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value = this._map[key3];
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}
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}
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if (value instanceof Ref && this.xref) {
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return this.xref.fetch(value, this.suppressEncryption);
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}
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return value;
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}
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async getAsync(key1, key2, key3) {
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let value = this._map[key1];
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if (value === undefined && key2 !== undefined) {
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value = this._map[key2];
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if (value === undefined && key3 !== undefined) {
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value = this._map[key3];
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}
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}
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if (value instanceof Ref && this.xref) {
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return this.xref.fetchAsync(value, this.suppressEncryption);
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}
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return value;
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}
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getArray(key1, key2, key3) {
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let value = this._map[key1];
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if (value === undefined && key2 !== undefined) {
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value = this._map[key2];
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if (value === undefined && key3 !== undefined) {
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value = this._map[key3];
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}
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}
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if (value instanceof Ref && this.xref) {
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value = this.xref.fetch(value, this.suppressEncryption);
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}
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if (Array.isArray(value)) {
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value = value.slice();
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for (let i = 0, ii = value.length; i < ii; i++) {
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if (value[i] instanceof Ref && this.xref) {
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value[i] = this.xref.fetch(value[i], this.suppressEncryption);
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}
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}
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}
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return value;
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}
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getRaw(key) {
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return this._map[key];
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}
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getKeys() {
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return Object.keys(this._map);
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}
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getRawValues() {
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return Object.values(this._map);
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}
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set(key, value) {
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this._map[key] = value;
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}
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has(key) {
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return this._map[key] !== undefined;
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}
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forEach(callback) {
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for (const key in this._map) {
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callback(key, this.get(key));
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}
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}
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static get empty() {
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const emptyDict = new Dict(null);
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emptyDict.set = (key, value) => {
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(0, _util.unreachable)("Should not call `set` on the empty dictionary.");
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};
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return (0, _util.shadow)(this, "empty", emptyDict);
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}
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static merge({
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xref,
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dictArray,
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mergeSubDicts = false
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}) {
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const mergedDict = new Dict(xref),
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properties = new Map();
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for (const dict of dictArray) {
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if (!(dict instanceof Dict)) {
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continue;
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}
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for (const [key, value] of Object.entries(dict._map)) {
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let property = properties.get(key);
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if (property === undefined) {
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property = [];
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properties.set(key, property);
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} else if (!mergeSubDicts || !(value instanceof Dict)) {
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continue;
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}
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property.push(value);
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}
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}
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for (const [name, values] of properties) {
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if (values.length === 1 || !(values[0] instanceof Dict)) {
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mergedDict._map[name] = values[0];
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continue;
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}
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const subDict = new Dict(xref);
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for (const dict of values) {
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for (const [key, value] of Object.entries(dict._map)) {
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if (subDict._map[key] === undefined) {
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subDict._map[key] = value;
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}
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}
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}
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if (subDict.size > 0) {
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mergedDict._map[name] = subDict;
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}
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}
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properties.clear();
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return mergedDict.size > 0 ? mergedDict : Dict.empty;
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}
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}
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exports.Dict = Dict;
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const Ref = function RefClosure() {
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let refCache = Object.create(null);
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class Ref {
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constructor(num, gen) {
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this.num = num;
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this.gen = gen;
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}
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toString() {
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if (this.gen === 0) {
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return `${this.num}R`;
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}
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return `${this.num}R${this.gen}`;
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}
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static get(num, gen) {
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const key = gen === 0 ? `${num}R` : `${num}R${gen}`;
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return refCache[key] || (refCache[key] = new Ref(num, gen));
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}
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static _clearCache() {
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refCache = Object.create(null);
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}
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}
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return Ref;
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}();
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exports.Ref = Ref;
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class RefSet {
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constructor(parent = null) {
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this._set = new Set(parent && parent._set);
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}
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has(ref) {
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return this._set.has(ref.toString());
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}
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put(ref) {
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this._set.add(ref.toString());
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}
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remove(ref) {
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this._set.delete(ref.toString());
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}
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[Symbol.iterator]() {
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return this._set.values();
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}
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clear() {
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this._set.clear();
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}
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}
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exports.RefSet = RefSet;
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class RefSetCache {
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constructor() {
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this._map = new Map();
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}
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get size() {
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return this._map.size;
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}
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get(ref) {
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return this._map.get(ref.toString());
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}
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has(ref) {
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return this._map.has(ref.toString());
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}
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put(ref, obj) {
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this._map.set(ref.toString(), obj);
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}
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putAlias(ref, aliasRef) {
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this._map.set(ref.toString(), this.get(aliasRef));
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}
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[Symbol.iterator]() {
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return this._map.values();
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}
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clear() {
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this._map.clear();
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}
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}
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exports.RefSetCache = RefSetCache;
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function isName(v, name) {
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return v instanceof Name && (name === undefined || v.name === name);
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}
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function isCmd(v, cmd) {
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return v instanceof Cmd && (cmd === undefined || v.cmd === cmd);
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}
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function isDict(v, type) {
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return v instanceof Dict && (type === undefined || isName(v.get("Type"), type));
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}
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function isRefsEqual(v1, v2) {
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return v1.num === v2.num && v1.gen === v2.gen;
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}
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function clearPrimitiveCaches() {
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Cmd._clearCache();
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Name._clearCache();
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Ref._clearCache();
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}
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