dmcallis
65a0592776
Source code drop for the Actionscript virtual machine in the Adobe Flash Player for December 2013
72 lines
2.4 KiB
C++
72 lines
2.4 KiB
C++
/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 4 -*- */
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/* vi: set ts=4 sw=4 expandtab: (add to ~/.vimrc: set modeline modelines=5) */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __avmplus_CodeContext__
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#define __avmplus_CodeContext__
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namespace avmplus
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{
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// CodeContext is used to track which security context we are in.
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// When an AS3 method is called, the AS3 method will ensure that core->codeContext() will return its context.
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// Note that CodeContext should not be instantiated directly (except in certain situations
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// by AvmCore); client code should create a concrete subclass.
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class CodeContext : public MMgc::GCObject
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{
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friend class AvmCore;
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protected:
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explicit CodeContext(DomainEnv* env, const BugCompatibility* bugCompatibility)
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: m_domainEnv(env)
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, m_bugCompatibility(bugCompatibility)
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{
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AvmAssert(env != NULL);
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}
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public:
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REALLY_INLINE DomainEnv* domainEnv() const { return m_domainEnv; }
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REALLY_INLINE const BugCompatibility* bugCompatibility() const { return m_bugCompatibility; }
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private:
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GCMember<DomainEnv> m_domainEnv;
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GCMember<const BugCompatibility> m_bugCompatibility;
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};
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class EnterCodeContext
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{
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public:
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EnterCodeContext() : m_core(NULL) {} // support dynamic entry
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explicit EnterCodeContext(AvmCore* core, CodeContext* new_cc) : m_core(NULL)
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{
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enter(core,new_cc);
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}
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void enter(AvmCore* core, CodeContext* new_cc)
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{
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AvmAssert(core != NULL);
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AvmAssert(m_core == NULL); // Don't permit multiple entry.
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m_core = core;
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m_frame.enter(core, new_cc);
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// fix for https://bugzilla.mozilla.org/show_bug.cgi?id=537980
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// ensure that dxns has a suitable default value for artifical MethodFrames
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m_frame.setDxns(core->publicNamespace);
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}
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~EnterCodeContext()
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{
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if (m_core) {
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m_frame.exit(m_core);
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}
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}
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private:
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AvmCore* m_core;
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MethodFrame m_frame;
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};
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}
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#endif /* __avmplus_CodeContext__ */
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