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39#ifndef QMLJS_RUNTIME_H
40#define QMLJS_RUNTIME_H
41
42//
43// W A R N I N G
44// -------------
45//
46// This file is not part of the Qt API. It exists purely as an
47// implementation detail. This header file may change from version to
48// version without notice, or even be removed.
49//
50// We mean it.
51//
52
53#include "qv4global_p.h"
54#include "qv4value_p.h"
55#include "qv4math_p.h"
56#include "qv4runtimeapi_p.h"
57#include <QtCore/qnumeric.h>
58
59QT_BEGIN_NAMESPACE
60
61#undef QV4_COUNT_RUNTIME_FUNCTIONS
62
63namespace QV4 {
64
65#ifdef QV4_COUNT_RUNTIME_FUNCTIONS
66class RuntimeCounters
67{
68public:
69 RuntimeCounters();
70 ~RuntimeCounters();
71
72 static RuntimeCounters *instance;
73
74 void count(const char *func);
75 void count(const char *func, uint tag);
76 void count(const char *func, uint tag1, uint tag2);
77
78private:
79 struct Data;
80 Data *d;
81};
82
83# define TRACE0() RuntimeCounters::instance->count(Q_FUNC_INFO);
84# define TRACE1(x) RuntimeCounters::instance->count(Q_FUNC_INFO, x.type());
85# define TRACE2(x, y) RuntimeCounters::instance->count(Q_FUNC_INFO, x.type(), y.type());
86#else
87# define TRACE0()
88# define TRACE1(x)
89# define TRACE2(x, y)
90#endif // QV4_COUNT_RUNTIME_FUNCTIONS
91
92enum TypeHint {
93 PREFERREDTYPE_HINT,
94 NUMBER_HINT,
95 STRING_HINT
96};
97
98struct Q_QML_PRIVATE_EXPORT RuntimeHelpers {
99 static ReturnedValue objectDefaultValue(const Object *object, int typeHint);
100 static ReturnedValue toPrimitive(const Value &value, TypeHint typeHint);
101 static ReturnedValue ordinaryToPrimitive(ExecutionEngine *engine, const Object *object, String *typeHint);
102
103 static double stringToNumber(const QString &s);
104 static Heap::String *stringFromNumber(ExecutionEngine *engine, double number);
105 static double toNumber(const Value &value);
106 static void numberToString(QString *result, double num, int radix = 10);
107
108 static Heap::String *convertToString(ExecutionEngine *engine, Value value, TypeHint = STRING_HINT);
109 static Heap::Object *convertToObject(ExecutionEngine *engine, const Value &value);
110
111 static Bool equalHelper(const Value &x, const Value &y);
112 static Bool strictEqual(const Value &x, const Value &y);
113
114 static ReturnedValue addHelper(ExecutionEngine *engine, const Value &left, const Value &right);
115};
116
117
118// type conversion and testing
119inline ReturnedValue RuntimeHelpers::toPrimitive(const Value &value, TypeHint typeHint)
120{
121 if (!value.isObject())
122 return value.asReturnedValue();
123 return RuntimeHelpers::objectDefaultValue(object: &reinterpret_cast<const Object &>(value), typeHint);
124}
125
126inline double RuntimeHelpers::toNumber(const Value &value)
127{
128 return value.toNumber();
129}
130} // namespace QV4
131
132QT_END_NAMESPACE
133
134#endif // QMLJS_RUNTIME_H
135

source code of qtdeclarative/src/qml/jsruntime/qv4runtime_p.h