summaryrefslogtreecommitdiff
path: root/js/src/jsscriptinlines.h
blob: 65abb5cb7c61f61fa5ca9ab3acab02babf0c1e13 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 * vim: set ts=8 sts=4 et sw=4 tw=99:
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef jsscriptinlines_h
#define jsscriptinlines_h

#include "jsscript.h"

#include "jit/BaselineJIT.h"
#include "jit/IonAnalysis.h"
#include "vm/EnvironmentObject.h"
#include "wasm/AsmJS.h"

#include "jscompartmentinlines.h"

#include "vm/Shape-inl.h"

namespace js {

ScriptCounts::ScriptCounts()
  : pcCounts_(),
    throwCounts_(),
    ionCounts_(nullptr)
{
}

ScriptCounts::ScriptCounts(PCCountsVector&& jumpTargets)
  : pcCounts_(Move(jumpTargets)),
    throwCounts_(),
    ionCounts_(nullptr)
{
}

ScriptCounts::ScriptCounts(ScriptCounts&& src)
  : pcCounts_(Move(src.pcCounts_)),
    throwCounts_(Move(src.throwCounts_)),
    ionCounts_(Move(src.ionCounts_))
{
    src.ionCounts_ = nullptr;
}

ScriptCounts&
ScriptCounts::operator=(ScriptCounts&& src)
{
    pcCounts_ = Move(src.pcCounts_);
    throwCounts_ = Move(src.throwCounts_);
    ionCounts_ = Move(src.ionCounts_);
    src.ionCounts_ = nullptr;
    return *this;
}

ScriptCounts::~ScriptCounts()
{
    js_delete(ionCounts_);
}

ScriptAndCounts::ScriptAndCounts(JSScript* script)
  : script(script),
    scriptCounts()
{
    script->releaseScriptCounts(&scriptCounts);
}

ScriptAndCounts::ScriptAndCounts(ScriptAndCounts&& sac)
  : script(Move(sac.script)),
    scriptCounts(Move(sac.scriptCounts))
{
}

void
SetFrameArgumentsObject(JSContext* cx, AbstractFramePtr frame,
                        HandleScript script, JSObject* argsobj);

inline JSFunction*
LazyScript::functionDelazifying(JSContext* cx) const
{
    Rooted<const LazyScript*> self(cx, this);
    RootedFunction fun(cx, self->function_);
    if (self->function_ && !JSFunction::getOrCreateScript(cx, fun))
        return nullptr;
    return self->function_;
}

} // namespace js

inline JSFunction*
JSScript::functionDelazifying() const
{
    JSFunction* fun = function();
    if (fun && fun->isInterpretedLazy()) {
        fun->setUnlazifiedScript(const_cast<JSScript*>(this));
        // If this script has a LazyScript, make sure the LazyScript has a
        // reference to the script when delazifying its canonical function.
        if (lazyScript && !lazyScript->maybeScript())
            lazyScript->initScript(const_cast<JSScript*>(this));
    }
    return fun;
}

inline void
JSScript::ensureNonLazyCanonicalFunction(JSContext* cx)
{
    // Infallibly delazify the canonical script.
    JSFunction* fun = function();
    if (fun && fun->isInterpretedLazy())
        functionDelazifying();
}

inline JSFunction*
JSScript::getFunction(size_t index)
{
    JSFunction* fun = &getObject(index)->as<JSFunction>();
    MOZ_ASSERT_IF(fun->isNative(), IsAsmJSModuleNative(fun->native()));
    return fun;
}

inline js::RegExpObject*
JSScript::getRegExp(size_t index)
{
    return &getObject(index)->as<js::RegExpObject>();
}

inline js::RegExpObject*
JSScript::getRegExp(jsbytecode* pc)
{
    return &getObject(pc)->as<js::RegExpObject>();
}

inline js::GlobalObject&
JSScript::global() const
{
    /*
     * A JSScript always marks its compartment's global (via bindings) so we
     * can assert that maybeGlobal is non-null here.
     */
    return *compartment()->maybeGlobal();
}

inline js::LexicalScope*
JSScript::maybeNamedLambdaScope() const
{
    // Dynamically created Functions via the 'new Function' are considered
    // named lambdas but they do not have the named lambda scope of
    // textually-created named lambdas.
    js::Scope* scope = outermostScope();
    if (scope->kind() == js::ScopeKind::NamedLambda ||
        scope->kind() == js::ScopeKind::StrictNamedLambda)
    {
        MOZ_ASSERT_IF(!strict(), scope->kind() == js::ScopeKind::NamedLambda);
        MOZ_ASSERT_IF(strict(), scope->kind() == js::ScopeKind::StrictNamedLambda);
        return &scope->as<js::LexicalScope>();
    }
    return nullptr;
}

inline js::Shape*
JSScript::initialEnvironmentShape() const
{
    js::Scope* scope = bodyScope();
    if (scope->is<js::FunctionScope>()) {
        if (js::Shape* envShape = scope->environmentShape())
            return envShape;
        if (js::Scope* namedLambdaScope = maybeNamedLambdaScope())
            return namedLambdaScope->environmentShape();
    } else if (scope->is<js::EvalScope>()) {
        return scope->environmentShape();
    }
    return nullptr;
}

inline JSPrincipals*
JSScript::principals()
{
    return compartment()->principals();
}

inline void
JSScript::setBaselineScript(JSRuntime* maybeRuntime, js::jit::BaselineScript* baselineScript)
{
    if (hasBaselineScript())
        js::jit::BaselineScript::writeBarrierPre(zone(), baseline);
    MOZ_ASSERT(!hasIonScript());
    baseline = baselineScript;
    resetWarmUpResetCounter();
    updateBaselineOrIonRaw(maybeRuntime);
}

inline bool
JSScript::ensureHasAnalyzedArgsUsage(JSContext* cx)
{
    if (analyzedArgsUsage())
        return true;
    return js::jit::AnalyzeArgumentsUsage(cx, this);
}

inline bool
JSScript::isDebuggee() const
{
    return compartment_->debuggerObservesAllExecution() || hasDebugScript_;
}

#endif /* jsscriptinlines_h */