input.js 17 KB

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  1. 'use strict';
  2. exports.__esModule = true;
  3. var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
  4. var _cssSyntaxError = require('./css-syntax-error');
  5. var _cssSyntaxError2 = _interopRequireDefault(_cssSyntaxError);
  6. var _previousMap = require('./previous-map');
  7. var _previousMap2 = _interopRequireDefault(_previousMap);
  8. var _path = require('path');
  9. var _path2 = _interopRequireDefault(_path);
  10. function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  11. function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  12. var sequence = 0;
  13. /**
  14. * Represents the source CSS.
  15. *
  16. * @example
  17. * const root = postcss.parse(css, { from: file });
  18. * const input = root.source.input;
  19. */
  20. var Input = function () {
  21. /**
  22. * @param {string} css - input CSS source
  23. * @param {object} [opts] - {@link Processor#process} options
  24. */
  25. function Input(css) {
  26. var opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  27. _classCallCheck(this, Input);
  28. /**
  29. * @member {string} - input CSS source
  30. *
  31. * @example
  32. * const input = postcss.parse('a{}', { from: file }).input;
  33. * input.css //=> "a{}";
  34. */
  35. this.css = css.toString();
  36. if (this.css[0] === '\uFEFF' || this.css[0] === '\uFFFE') {
  37. this.css = this.css.slice(1);
  38. }
  39. if (opts.from) {
  40. if (/^\w+:\/\//.test(opts.from)) {
  41. /**
  42. * @member {string} - The absolute path to the CSS source file
  43. * defined with the `from` option.
  44. *
  45. * @example
  46. * const root = postcss.parse(css, { from: 'a.css' });
  47. * root.source.input.file //=> '/home/ai/a.css'
  48. */
  49. this.file = opts.from;
  50. } else {
  51. this.file = _path2.default.resolve(opts.from);
  52. }
  53. }
  54. var map = new _previousMap2.default(this.css, opts);
  55. if (map.text) {
  56. /**
  57. * @member {PreviousMap} - The input source map passed from
  58. * a compilation step before PostCSS
  59. * (for example, from Sass compiler).
  60. *
  61. * @example
  62. * root.source.input.map.consumer().sources //=> ['a.sass']
  63. */
  64. this.map = map;
  65. var file = map.consumer().file;
  66. if (!this.file && file) this.file = this.mapResolve(file);
  67. }
  68. if (!this.file) {
  69. sequence += 1;
  70. /**
  71. * @member {string} - The unique ID of the CSS source. It will be
  72. * created if `from` option is not provided
  73. * (because PostCSS does not know the file path).
  74. *
  75. * @example
  76. * const root = postcss.parse(css);
  77. * root.source.input.file //=> undefined
  78. * root.source.input.id //=> "<input css 1>"
  79. */
  80. this.id = '<input css ' + sequence + '>';
  81. }
  82. if (this.map) this.map.file = this.from;
  83. }
  84. Input.prototype.error = function error(message, line, column) {
  85. var opts = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : {};
  86. var result = void 0;
  87. var origin = this.origin(line, column);
  88. if (origin) {
  89. result = new _cssSyntaxError2.default(message, origin.line, origin.column, origin.source, origin.file, opts.plugin);
  90. } else {
  91. result = new _cssSyntaxError2.default(message, line, column, this.css, this.file, opts.plugin);
  92. }
  93. result.input = { line: line, column: column, source: this.css };
  94. if (this.file) result.input.file = this.file;
  95. return result;
  96. };
  97. /**
  98. * Reads the input source map and returns a symbol position
  99. * in the input source (e.g., in a Sass file that was compiled
  100. * to CSS before being passed to PostCSS).
  101. *
  102. * @param {number} line - line in input CSS
  103. * @param {number} column - column in input CSS
  104. *
  105. * @return {filePosition} position in input source
  106. *
  107. * @example
  108. * root.source.input.origin(1, 1) //=> { file: 'a.css', line: 3, column: 1 }
  109. */
  110. Input.prototype.origin = function origin(line, column) {
  111. if (!this.map) return false;
  112. var consumer = this.map.consumer();
  113. var from = consumer.originalPositionFor({ line: line, column: column });
  114. if (!from.source) return false;
  115. var result = {
  116. file: this.mapResolve(from.source),
  117. line: from.line,
  118. column: from.column
  119. };
  120. var source = consumer.sourceContentFor(from.source);
  121. if (source) result.source = source;
  122. return result;
  123. };
  124. Input.prototype.mapResolve = function mapResolve(file) {
  125. if (/^\w+:\/\//.test(file)) {
  126. return file;
  127. } else {
  128. return _path2.default.resolve(this.map.consumer().sourceRoot || '.', file);
  129. }
  130. };
  131. /**
  132. * The CSS source identifier. Contains {@link Input#file} if the user
  133. * set the `from` option, or {@link Input#id} if they did not.
  134. * @type {string}
  135. *
  136. * @example
  137. * const root = postcss.parse(css, { from: 'a.css' });
  138. * root.source.input.from //=> "/home/ai/a.css"
  139. *
  140. * const root = postcss.parse(css);
  141. * root.source.input.from //=> "<input css 1>"
  142. */
  143. _createClass(Input, [{
  144. key: 'from',
  145. get: function get() {
  146. return this.file || this.id;
  147. }
  148. }]);
  149. return Input;
  150. }();
  151. exports.default = Input;
  152. /**
  153. * @typedef {object} filePosition
  154. * @property {string} file - path to file
  155. * @property {number} line - source line in file
  156. * @property {number} column - source column in file
  157. */
  158. module.exports = exports['default'];
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input CSS source\n     * @param {object} [opts] - {@link Processor#process} options\n     */\n    constructor(css, opts = { }) {\n        /**\n         * @member {string} - input CSS source\n         *\n         * @example\n         * const input = postcss.parse('a{}', { from: file }).input;\n         * input.css //=> \"a{}\";\n         */\n        this.css = css.toString();\n\n        if ( this.css[0] === '\\uFEFF' || this.css[0] === '\\uFFFE' ) {\n            this.css = this.css.slice(1);\n        }\n\n        if ( opts.from ) {\n            if ( /^\\w+:\\/\\//.test(opts.from) ) {\n                /**\n                 * @member {string} - The absolute path to the CSS source file\n                 *                    defined with the `from` option.\n                 *\n                 * @example\n                 * const root = postcss.parse(css, { from: 'a.css' });\n                 * root.source.input.file //=> '/home/ai/a.css'\n                 */\n                this.file = opts.from;\n            } else {\n                this.file = path.resolve(opts.from);\n            }\n        }\n\n        let map = new PreviousMap(this.css, opts);\n        if ( map.text ) {\n            /**\n             * @member {PreviousMap} - The input source map passed from\n             *                         a compilation step before PostCSS\n             *                         (for example, from Sass compiler).\n             *\n             * @example\n             * root.source.input.map.consumer().sources //=> ['a.sass']\n             */\n            this.map = map;\n            let file = map.consumer().file;\n            if ( !this.file && file ) this.file = this.mapResolve(file);\n        }\n\n        if ( !this.file ) {\n            sequence += 1;\n            /**\n             * @member {string} - The unique ID of the CSS source. It will be\n             *                    created if `from` option is not provided\n             *                    (because PostCSS does not know the file path).\n             *\n             * @example\n             * const root = postcss.parse(css);\n             * root.source.input.file //=> undefined\n             * root.source.input.id   //=> \"<input css 1>\"\n             */\n            this.id   = '<input css ' + sequence + '>';\n        }\n        if ( this.map ) this.map.file = this.from;\n    }\n\n    error(message, line, column, opts = { }) {\n        let result;\n        let origin = this.origin(line, column);\n        if ( origin ) {\n            result = new CssSyntaxError(message, origin.line, origin.column,\n                origin.source, origin.file, opts.plugin);\n        } else {\n            result = new CssSyntaxError(message, line, column,\n                this.css, this.file, opts.plugin);\n        }\n\n        result.input = { line, column, source: this.css };\n        if ( this.file ) result.input.file = this.file;\n\n        return result;\n    }\n\n    /**\n     * Reads the input source map and returns a symbol position\n     * in the input source (e.g., in a Sass file that was compiled\n     * to CSS before being passed to PostCSS).\n     *\n     * @param {number} line   - line in input CSS\n     * @param {number} column - column in input CSS\n     *\n     * @return {filePosition} position in input source\n     *\n     * @example\n     * root.source.input.origin(1, 1) //=> { file: 'a.css', line: 3, column: 1 }\n     */\n    origin(line, column) {\n        if ( !this.map ) return false;\n        let consumer = this.map.consumer();\n\n        let from = consumer.originalPositionFor({ line, column });\n        if ( !from.source ) return false;\n\n        let result = {\n            file:   this.mapResolve(from.source),\n            line:   from.line,\n            column: from.column\n        };\n\n        let source = consumer.sourceContentFor(from.source);\n        if ( source ) result.source = source;\n\n        return result;\n    }\n\n    mapResolve(file) {\n        if ( /^\\w+:\\/\\//.test(file) ) {\n            return file;\n        } else {\n            return path.resolve(this.map.consumer().sourceRoot || '.', file);\n        }\n    }\n\n    /**\n     * The CSS source identifier. Contains {@link Input#file} if the user\n     * set the `from` option, or {@link Input#id} if they did not.\n     * @type {string}\n     *\n     * @example\n     * const root = postcss.parse(css, { from: 'a.css' });\n     * root.source.input.from //=> \"/home/ai/a.css\"\n     *\n     * const root = postcss.parse(css);\n     * root.source.input.from //=> \"<input css 1>\"\n     */\n    get from() {\n        return this.file || this.id;\n    }\n\n}\n\nexport default Input;\n\n/**\n * @typedef  {object} filePosition\n * @property {string} file   - path to file\n * @property {number} line   - source line in file\n * @property {number} column - source column in file\n */\n"]}