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39
40#include "qqmljsengine_p.h"
41#include "qqmljsglobal_p.h"
42
43#include <QtCore/private/qnumeric_p.h>
44#include <QtCore/qhash.h>
45#include <QtCore/qdebug.h>
46
47QT_BEGIN_NAMESPACE
48
49namespace QQmlJS {
50
51static inline int toDigit(char c)
52{
53 if ((c >= '0') && (c <= '9'))
54 return c - '0';
55 else if ((c >= 'a') && (c <= 'z'))
56 return 10 + c - 'a';
57 else if ((c >= 'A') && (c <= 'Z'))
58 return 10 + c - 'A';
59 return -1;
60}
61
62double integerFromString(const char *buf, int size, int radix)
63{
64 if (size == 0)
65 return qt_qnan();
66
67 double sign = 1.0;
68 int i = 0;
69 if (buf[0] == '+') {
70 ++i;
71 } else if (buf[0] == '-') {
72 sign = -1.0;
73 ++i;
74 }
75
76 if (((size-i) >= 2) && (buf[i] == '0')) {
77 if (((buf[i+1] == 'x') || (buf[i+1] == 'X'))
78 && (radix < 34)) {
79 if ((radix != 0) && (radix != 16))
80 return 0;
81 radix = 16;
82 i += 2;
83 } else {
84 if (radix == 0) {
85 radix = 8;
86 ++i;
87 }
88 }
89 } else if (radix == 0) {
90 radix = 10;
91 }
92
93 int j = i;
94 for ( ; i < size; ++i) {
95 int d = toDigit(c: buf[i]);
96 if ((d == -1) || (d >= radix))
97 break;
98 }
99 double result;
100 if (j == i) {
101 if (!qstrcmp(str1: buf, str2: "Infinity"))
102 result = qInf();
103 else
104 result = qt_qnan();
105 } else {
106 result = 0;
107 double multiplier = 1;
108 for (--i ; i >= j; --i, multiplier *= radix)
109 result += toDigit(c: buf[i]) * multiplier;
110 }
111 result *= sign;
112 return result;
113}
114
115Engine::Engine()
116 : _lexer(nullptr), _directives(nullptr)
117{ }
118
119Engine::~Engine()
120{ }
121
122void Engine::setCode(const QString &code)
123{ _code = code; }
124
125void Engine::addComment(int pos, int len, int line, int col)
126{ if (len > 0) _comments.append(t: QQmlJS::SourceLocation(pos, len, line, col)); }
127
128QList<QQmlJS::SourceLocation> Engine::comments() const
129{ return _comments; }
130
131Lexer *Engine::lexer() const
132{ return _lexer; }
133
134void Engine::setLexer(Lexer *lexer)
135{ _lexer = lexer; }
136
137Directives *Engine::directives() const
138{ return _directives; }
139
140void Engine::setDirectives(Directives *directives)
141{ _directives = directives; }
142
143MemoryPool *Engine::pool()
144{ return &_pool; }
145
146QStringRef Engine::newStringRef(const QString &text)
147{
148 const int pos = _extraCode.length();
149 _extraCode += text;
150 return _extraCode.midRef(position: pos, n: text.length());
151}
152
153QStringRef Engine::newStringRef(const QChar *chars, int size)
154{ return newStringRef(text: QString(chars, size)); }
155
156} // end of namespace QQmlJS
157
158QT_END_NAMESPACE
159

source code of qtdeclarative/src/qml/parser/qqmljsengine_p.cpp