UbiNodeUtils.h (1239B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- 2 * vim: set ts=8 sts=2 et sw=2 tw=80: 3 * This Source Code Form is subject to the terms of the Mozilla Public 4 * License, v. 2.0. If a copy of the MPL was not distributed with this 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ 6 7 #ifndef js_UbiNodeUtils_h 8 #define js_UbiNodeUtils_h 9 10 #include "jspubtd.h" 11 12 #include "js/UbiNode.h" 13 #include "js/UniquePtr.h" 14 15 using JS::ubi::Edge; 16 using JS::ubi::EdgeRange; 17 using JS::ubi::EdgeVector; 18 19 namespace JS { 20 namespace ubi { 21 // An EdgeRange concrete class that simply holds a vector of Edges, 22 // populated by the addTracerEdges method. 23 class SimpleEdgeRange : public EdgeRange { 24 EdgeVector edges; 25 size_t i; 26 27 protected: 28 void settle() { front_ = i < edges.length() ? &edges[i] : nullptr; } 29 30 public: 31 explicit SimpleEdgeRange() : edges(), i(0) {} 32 33 bool addTracerEdges(JSRuntime* rt, void* thing, JS::TraceKind kind, 34 bool wantNames); 35 36 bool addEdge(Edge edge) { 37 if (!edges.append(std::move(edge))) return false; 38 settle(); 39 return true; 40 } 41 42 void popFront() override { 43 i++; 44 settle(); 45 } 46 }; 47 48 } // namespace ubi 49 } // namespace JS 50 51 #endif // js_UbiNodeUtils_h