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
|
"use strict";
exports.__esModule = true;
exports.CodeGenerator = undefined;
var _classCallCheck2 = require("babel-runtime/helpers/classCallCheck");
var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);
var _possibleConstructorReturn2 = require("babel-runtime/helpers/possibleConstructorReturn");
var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);
var _inherits2 = require("babel-runtime/helpers/inherits");
var _inherits3 = _interopRequireDefault(_inherits2);
exports.default = function (ast, opts, code) {
var gen = new Generator(ast, opts, code);
return gen.generate();
};
var _detectIndent = require("detect-indent");
var _detectIndent2 = _interopRequireDefault(_detectIndent);
var _sourceMap = require("./source-map");
var _sourceMap2 = _interopRequireDefault(_sourceMap);
var _babelMessages = require("babel-messages");
var messages = _interopRequireWildcard(_babelMessages);
var _printer = require("./printer");
var _printer2 = _interopRequireDefault(_printer);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var Generator = function (_Printer) {
(0, _inherits3.default)(Generator, _Printer);
function Generator(ast) {
var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
var code = arguments[2];
(0, _classCallCheck3.default)(this, Generator);
var tokens = ast.tokens || [];
var format = normalizeOptions(code, opts, tokens);
var map = opts.sourceMaps ? new _sourceMap2.default(opts, code) : null;
var _this = (0, _possibleConstructorReturn3.default)(this, _Printer.call(this, format, map, tokens));
_this.ast = ast;
return _this;
}
Generator.prototype.generate = function generate() {
return _Printer.prototype.generate.call(this, this.ast);
};
return Generator;
}(_printer2.default);
function normalizeOptions(code, opts, tokens) {
var style = " ";
if (code && typeof code === "string") {
var indent = (0, _detectIndent2.default)(code).indent;
if (indent && indent !== " ") style = indent;
}
var format = {
auxiliaryCommentBefore: opts.auxiliaryCommentBefore,
auxiliaryCommentAfter: opts.auxiliaryCommentAfter,
shouldPrintComment: opts.shouldPrintComment,
retainLines: opts.retainLines,
retainFunctionParens: opts.retainFunctionParens,
comments: opts.comments == null || opts.comments,
compact: opts.compact,
minified: opts.minified,
concise: opts.concise,
quotes: opts.quotes || findCommonStringDelimiter(code, tokens),
jsonCompatibleStrings: opts.jsonCompatibleStrings,
indent: {
adjustMultilineComment: true,
style: style,
base: 0
},
flowCommaSeparator: opts.flowCommaSeparator
};
if (format.minified) {
format.compact = true;
format.shouldPrintComment = format.shouldPrintComment || function () {
return format.comments;
};
} else {
format.shouldPrintComment = format.shouldPrintComment || function (value) {
return format.comments || value.indexOf("@license") >= 0 || value.indexOf("@preserve") >= 0;
};
}
if (format.compact === "auto") {
format.compact = code.length > 500000;
if (format.compact) {
console.error("[BABEL] " + messages.get("codeGeneratorDeopt", opts.filename, "500KB"));
}
}
if (format.compact) {
format.indent.adjustMultilineComment = false;
}
return format;
}
function findCommonStringDelimiter(code, tokens) {
var DEFAULT_STRING_DELIMITER = "double";
if (!code) {
return DEFAULT_STRING_DELIMITER;
}
var occurrences = {
single: 0,
double: 0
};
var checked = 0;
for (var i = 0; i < tokens.length; i++) {
var token = tokens[i];
if (token.type.label !== "string") continue;
var raw = code.slice(token.start, token.end);
if (raw[0] === "'") {
occurrences.single++;
} else {
occurrences.double++;
}
checked++;
if (checked >= 3) break;
}
if (occurrences.single > occurrences.double) {
return "single";
} else {
return "double";
}
}
var CodeGenerator = exports.CodeGenerator = function () {
function CodeGenerator(ast, opts, code) {
(0, _classCallCheck3.default)(this, CodeGenerator);
this._generator = new Generator(ast, opts, code);
}
CodeGenerator.prototype.generate = function generate() {
return this._generator.generate();
};
return CodeGenerator;
}();
|
