SkPDF: Factor SkPDFCatalog into SkPDFObjNumMap and SkPDFSubstituteMap

src/pdf/SkPDFCatalog.cpp

-
-/*
- * Copyright 2010 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#include "SkPDFCatalog.h"
-
-SkPDFCatalog::SkPDFCatalog() {}
-
-SkPDFCatalog::~SkPDFCatalog() {
-    fSubstituteMap.foreach(
-            [](SkPDFObject*, SkPDFObject** v) { (*v)->unref(); });
-}
-
-bool SkPDFCatalog::addObject(SkPDFObject* obj) {
-    if (fObjectNumbers.find(obj)) {
-        return false;
-    }
-    fObjectNumbers.set(obj, fObjectNumbers.count() + 1);
-    fObjects.push(obj);
-    return true;
-}
-
-int32_t SkPDFCatalog::getObjectNumber(SkPDFObject* obj) const {
-    int32_t* objectNumberFound = fObjectNumbers.find(obj);
-    SkASSERT(objectNumberFound);
-    return *objectNumberFound;
-}
-
-void SkPDFCatalog::setSubstitute(SkPDFObject* original,
-                                 SkPDFObject* substitute) {
-    SkASSERT(original != substitute);
-    SkASSERT(!fSubstituteMap.find(original));
-    fSubstituteMap.set(original, SkRef(substitute));
-}
-
-SkPDFObject* SkPDFCatalog::getSubstituteObject(SkPDFObject* object) const {
-    SkPDFObject** found = fSubstituteMap.find(object);
-    return found ? *found : object;
-}