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39 | |
40 | #include "qv4function_p.h" |
41 | #include "qv4functionobject_p.h" |
42 | #include "qv4managed_p.h" |
43 | #include "qv4string_p.h" |
44 | #include "qv4value_p.h" |
45 | #include "qv4engine_p.h" |
46 | #include "qv4lookup_p.h" |
47 | #include <private/qv4mm_p.h> |
48 | #include <private/qv4identifiertable_p.h> |
49 | #include <private/qv4functiontable_p.h> |
50 | #include <assembler/MacroAssemblerCodeRef.h> |
51 | #include <private/qv4vme_moth_p.h> |
52 | #include <private/qqmlglobal_p.h> |
53 | |
54 | QT_BEGIN_NAMESPACE |
55 | |
56 | using namespace QV4; |
57 | |
58 | ReturnedValue Function::call(const Value *thisObject, const Value *argv, int argc, const ExecutionContext *context) { |
59 | ExecutionEngine *engine = context->engine(); |
60 | CppStackFrame frame; |
61 | frame.init(engine, v4Function: this, argv, argc); |
62 | frame.setupJSFrame(stackSpace: engine->jsStackTop, function: Value::undefinedValue(), scope: context->d(), |
63 | thisObject: thisObject ? *thisObject : Value::undefinedValue(), |
64 | newTarget: Value::undefinedValue()); |
65 | |
66 | frame.push(); |
67 | engine->jsStackTop += frame.requiredJSStackFrameSize(); |
68 | |
69 | ReturnedValue result = Moth::VME::exec(frame: &frame, engine); |
70 | |
71 | frame.pop(); |
72 | |
73 | return result; |
74 | } |
75 | |
76 | Function *Function::create(ExecutionEngine *engine, ExecutableCompilationUnit *unit, |
77 | const CompiledData::Function *function) |
78 | { |
79 | return new Function(engine, unit, function); |
80 | } |
81 | |
82 | void Function::destroy() |
83 | { |
84 | delete this; |
85 | } |
86 | |
87 | Function::Function(ExecutionEngine *engine, ExecutableCompilationUnit *unit, |
88 | const CompiledData::Function *function) |
89 | : FunctionData(unit) |
90 | , compiledFunction(function) |
91 | , codeData(function->code()) |
92 | , jittedCode(nullptr) |
93 | , codeRef(nullptr) |
94 | { |
95 | Scope scope(engine); |
96 | Scoped<InternalClass> ic(scope, engine->internalClasses(icType: EngineBase::Class_CallContext)); |
97 | |
98 | // first locals |
99 | const quint32_le *localsIndices = compiledFunction->localsTable(); |
100 | for (quint32 i = 0; i < compiledFunction->nLocals; ++i) |
101 | ic = ic->addMember(identifier: engine->identifierTable->asPropertyKey(str: compilationUnit->runtimeStrings[localsIndices[i]]), data: Attr_NotConfigurable); |
102 | |
103 | const CompiledData::Parameter *formalsIndices = compiledFunction->formalsTable(); |
104 | for (quint32 i = 0; i < compiledFunction->nFormals; ++i) |
105 | ic = ic->addMember(identifier: engine->identifierTable->asPropertyKey(str: compilationUnit->runtimeStrings[formalsIndices[i].nameIndex]), data: Attr_NotConfigurable); |
106 | internalClass = ic->d(); |
107 | |
108 | nFormals = compiledFunction->nFormals; |
109 | } |
110 | |
111 | Function::~Function() |
112 | { |
113 | if (codeRef) { |
114 | destroyFunctionTable(function: this, codeRef); |
115 | delete codeRef; |
116 | } |
117 | } |
118 | |
119 | void Function::updateInternalClass(ExecutionEngine *engine, const QList<QByteArray> ¶meters) |
120 | { |
121 | QStringList parameterNames; |
122 | |
123 | // Resolve duplicate parameter names: |
124 | for (int i = 0, ei = parameters.count(); i != ei; ++i) { |
125 | const QByteArray ¶m = parameters.at(i); |
126 | int duplicate = -1; |
127 | |
128 | for (int j = i - 1; j >= 0; --j) { |
129 | const QByteArray &prevParam = parameters.at(i: j); |
130 | if (param == prevParam) { |
131 | duplicate = j; |
132 | break; |
133 | } |
134 | } |
135 | |
136 | if (duplicate == -1) { |
137 | parameterNames.append(t: QString::fromUtf8(str: param)); |
138 | } else { |
139 | const QString &dup = parameterNames[duplicate]; |
140 | parameterNames.append(t: dup); |
141 | parameterNames[duplicate] = |
142 | QString(0xfffe) + QString::number(duplicate) + dup; |
143 | } |
144 | |
145 | } |
146 | |
147 | internalClass = engine->internalClasses(icType: EngineBase::Class_CallContext); |
148 | |
149 | // first locals |
150 | const quint32_le *localsIndices = compiledFunction->localsTable(); |
151 | for (quint32 i = 0; i < compiledFunction->nLocals; ++i) { |
152 | internalClass = internalClass->addMember( |
153 | identifier: engine->identifierTable->asPropertyKey(str: compilationUnit->runtimeStrings[localsIndices[i]]), |
154 | data: Attr_NotConfigurable); |
155 | } |
156 | |
157 | Scope scope(engine); |
158 | ScopedString arg(scope); |
159 | for (const QString ¶meterName : parameterNames) { |
160 | arg = engine->newIdentifier(text: parameterName); |
161 | internalClass = internalClass->addMember(identifier: arg->propertyKey(), data: Attr_NotConfigurable); |
162 | } |
163 | nFormals = parameters.size(); |
164 | } |
165 | |
166 | QString Function::prettyName(const Function *function, const void *code) |
167 | { |
168 | QString prettyName = function ? function->name()->toQString() : QString(); |
169 | if (prettyName.isEmpty()) { |
170 | prettyName = QString::number(reinterpret_cast<quintptr>(code), base: 16); |
171 | prettyName.prepend(s: QLatin1String("QV4::Function(0x" )); |
172 | prettyName.append(c: QLatin1Char(')')); |
173 | } |
174 | return prettyName; |
175 | } |
176 | |
177 | QQmlSourceLocation Function::sourceLocation() const |
178 | { |
179 | return QQmlSourceLocation(sourceFile(), compiledFunction->location.line, compiledFunction->location.column); |
180 | } |
181 | |
182 | QT_END_NAMESPACE |
183 | |