lepu-test-platform-web/node_modules/babel-generator/lib/index.js

168 lines
4.6 KiB
JavaScript

"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;
}();