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Diffstat (limited to 'assets/node_modules/@babel/generator/lib/buffer.js')
| -rw-r--r-- | assets/node_modules/@babel/generator/lib/buffer.js | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/assets/node_modules/@babel/generator/lib/buffer.js b/assets/node_modules/@babel/generator/lib/buffer.js new file mode 100644 index 0000000..72e1662 --- /dev/null +++ b/assets/node_modules/@babel/generator/lib/buffer.js @@ -0,0 +1,244 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = void 0; +const SPACES_RE = /^[ \t]+$/; + +class Buffer { + constructor(map) { + this._map = null; + this._buf = []; + this._last = ""; + this._queue = []; + this._position = { + line: 1, + column: 0 + }; + this._sourcePosition = { + identifierName: null, + line: null, + column: null, + filename: null + }; + this._disallowedPop = null; + this._map = map; + } + + get() { + this._flush(); + + const map = this._map; + const result = { + code: this._buf.join("").trimRight(), + map: null, + rawMappings: map && map.getRawMappings() + }; + + if (map) { + Object.defineProperty(result, "map", { + configurable: true, + enumerable: true, + + get() { + return this.map = map.get(); + }, + + set(value) { + Object.defineProperty(this, "map", { + value, + writable: true + }); + } + + }); + } + + return result; + } + + append(str) { + this._flush(); + + const { + line, + column, + filename, + identifierName, + force + } = this._sourcePosition; + + this._append(str, line, column, identifierName, filename, force); + } + + queue(str) { + if (str === "\n") { + while (this._queue.length > 0 && SPACES_RE.test(this._queue[0][0])) { + this._queue.shift(); + } + } + + const { + line, + column, + filename, + identifierName, + force + } = this._sourcePosition; + + this._queue.unshift([str, line, column, identifierName, filename, force]); + } + + _flush() { + let item; + + while (item = this._queue.pop()) this._append(...item); + } + + _append(str, line, column, identifierName, filename, force) { + if (this._map && str[0] !== "\n") { + this._map.mark(this._position.line, this._position.column, line, column, identifierName, filename, force); + } + + this._buf.push(str); + + this._last = str[str.length - 1]; + + for (let i = 0; i < str.length; i++) { + if (str[i] === "\n") { + this._position.line++; + this._position.column = 0; + } else { + this._position.column++; + } + } + } + + removeTrailingNewline() { + if (this._queue.length > 0 && this._queue[0][0] === "\n") { + this._queue.shift(); + } + } + + removeLastSemicolon() { + if (this._queue.length > 0 && this._queue[0][0] === ";") { + this._queue.shift(); + } + } + + endsWith(suffix) { + if (suffix.length === 1) { + let last; + + if (this._queue.length > 0) { + const str = this._queue[0][0]; + last = str[str.length - 1]; + } else { + last = this._last; + } + + return last === suffix; + } + + const end = this._last + this._queue.reduce((acc, item) => item[0] + acc, ""); + + if (suffix.length <= end.length) { + return end.slice(-suffix.length) === suffix; + } + + return false; + } + + hasContent() { + return this._queue.length > 0 || !!this._last; + } + + exactSource(loc, cb) { + this.source("start", loc, true); + cb(); + this.source("end", loc); + + this._disallowPop("start", loc); + } + + source(prop, loc, force) { + if (prop && !loc) return; + + this._normalizePosition(prop, loc, this._sourcePosition, force); + } + + withSource(prop, loc, cb) { + if (!this._map) return cb(); + const originalLine = this._sourcePosition.line; + const originalColumn = this._sourcePosition.column; + const originalFilename = this._sourcePosition.filename; + const originalIdentifierName = this._sourcePosition.identifierName; + this.source(prop, loc); + cb(); + + if ((!this._sourcePosition.force || this._sourcePosition.line !== originalLine || this._sourcePosition.column !== originalColumn || this._sourcePosition.filename !== originalFilename) && (!this._disallowedPop || this._disallowedPop.line !== originalLine || this._disallowedPop.column !== originalColumn || this._disallowedPop.filename !== originalFilename)) { + this._sourcePosition.line = originalLine; + this._sourcePosition.column = originalColumn; + this._sourcePosition.filename = originalFilename; + this._sourcePosition.identifierName = originalIdentifierName; + this._sourcePosition.force = false; + this._disallowedPop = null; + } + } + + _disallowPop(prop, loc) { + if (prop && !loc) return; + this._disallowedPop = this._normalizePosition(prop, loc); + } + + _normalizePosition(prop, loc, targetObj, force) { + const pos = loc ? loc[prop] : null; + + if (targetObj === undefined) { + targetObj = { + identifierName: null, + line: null, + column: null, + filename: null, + force: false + }; + } + + const origLine = targetObj.line; + const origColumn = targetObj.column; + const origFilename = targetObj.filename; + targetObj.identifierName = prop === "start" && loc && loc.identifierName || null; + targetObj.line = pos ? pos.line : null; + targetObj.column = pos ? pos.column : null; + targetObj.filename = loc && loc.filename || null; + + if (force || targetObj.line !== origLine || targetObj.column !== origColumn || targetObj.filename !== origFilename) { + targetObj.force = force; + } + + return targetObj; + } + + getCurrentColumn() { + const extra = this._queue.reduce((acc, item) => item[0] + acc, ""); + + const lastIndex = extra.lastIndexOf("\n"); + return lastIndex === -1 ? this._position.column + extra.length : extra.length - 1 - lastIndex; + } + + getCurrentLine() { + const extra = this._queue.reduce((acc, item) => item[0] + acc, ""); + + let count = 0; + + for (let i = 0; i < extra.length; i++) { + if (extra[i] === "\n") count++; + } + + return this._position.line + count; + } + +} + +exports.default = Buffer;
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