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539 lines
12 KiB
539 lines
12 KiB
"use strict"; |
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Object.defineProperty(exports, "__esModule", { |
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value: true |
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}); |
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exports.default = void 0; |
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var _buffer = require("./buffer"); |
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var n = require("./node"); |
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var _t = require("@babel/types"); |
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var generatorFunctions = require("./generators"); |
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const { |
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isProgram, |
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isFile, |
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isEmptyStatement |
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} = _t; |
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const SCIENTIFIC_NOTATION = /e/i; |
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const ZERO_DECIMAL_INTEGER = /\.0+$/; |
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const NON_DECIMAL_LITERAL = /^0[box]/; |
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const PURE_ANNOTATION_RE = /^\s*[@#]__PURE__\s*$/; |
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const { |
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needsParens, |
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needsWhitespaceAfter, |
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needsWhitespaceBefore |
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} = n; |
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class Printer { |
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constructor(format, map) { |
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this.inForStatementInitCounter = 0; |
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this._printStack = []; |
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this._indent = 0; |
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this._insideAux = false; |
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this._parenPushNewlineState = null; |
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this._noLineTerminator = false; |
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this._printAuxAfterOnNextUserNode = false; |
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this._printedComments = new WeakSet(); |
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this._endsWithInteger = false; |
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this._endsWithWord = false; |
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this.format = format; |
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this._buf = new _buffer.default(map); |
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} |
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generate(ast) { |
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this.print(ast); |
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this._maybeAddAuxComment(); |
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return this._buf.get(); |
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} |
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indent() { |
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if (this.format.compact || this.format.concise) return; |
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this._indent++; |
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} |
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dedent() { |
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if (this.format.compact || this.format.concise) return; |
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this._indent--; |
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} |
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semicolon(force = false) { |
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this._maybeAddAuxComment(); |
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this._append(";", !force); |
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} |
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rightBrace() { |
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if (this.format.minified) { |
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this._buf.removeLastSemicolon(); |
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} |
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this.token("}"); |
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} |
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space(force = false) { |
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if (this.format.compact) return; |
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if (force) { |
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this._space(); |
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} else if (this._buf.hasContent()) { |
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const lastCp = this.getLastChar(); |
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if (lastCp !== 32 && lastCp !== 10) { |
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this._space(); |
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} |
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} |
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} |
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word(str) { |
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if (this._endsWithWord || this.endsWith(47) && str.charCodeAt(0) === 47) { |
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this._space(); |
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} |
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this._maybeAddAuxComment(); |
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this._append(str); |
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this._endsWithWord = true; |
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} |
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number(str) { |
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this.word(str); |
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this._endsWithInteger = Number.isInteger(+str) && !NON_DECIMAL_LITERAL.test(str) && !SCIENTIFIC_NOTATION.test(str) && !ZERO_DECIMAL_INTEGER.test(str) && str.charCodeAt(str.length - 1) !== 46; |
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} |
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token(str) { |
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const lastChar = this.getLastChar(); |
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const strFirst = str.charCodeAt(0); |
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if (str === "--" && lastChar === 33 || strFirst === 43 && lastChar === 43 || strFirst === 45 && lastChar === 45 || strFirst === 46 && this._endsWithInteger) { |
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this._space(); |
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} |
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this._maybeAddAuxComment(); |
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this._append(str); |
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} |
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newline(i = 1) { |
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if (this.format.retainLines || this.format.compact) return; |
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if (this.format.concise) { |
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this.space(); |
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return; |
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} |
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const charBeforeNewline = this.endsWithCharAndNewline(); |
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if (charBeforeNewline === 10) return; |
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if (charBeforeNewline === 123 || charBeforeNewline === 58) { |
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i--; |
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} |
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if (i <= 0) return; |
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for (let j = 0; j < i; j++) { |
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this._newline(); |
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} |
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} |
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endsWith(char) { |
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return this.getLastChar() === char; |
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} |
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getLastChar() { |
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return this._buf.getLastChar(); |
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} |
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endsWithCharAndNewline() { |
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return this._buf.endsWithCharAndNewline(); |
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} |
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removeTrailingNewline() { |
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this._buf.removeTrailingNewline(); |
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} |
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exactSource(loc, cb) { |
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this._catchUp("start", loc); |
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this._buf.exactSource(loc, cb); |
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} |
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source(prop, loc) { |
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this._catchUp(prop, loc); |
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this._buf.source(prop, loc); |
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} |
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withSource(prop, loc, cb) { |
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this._catchUp(prop, loc); |
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this._buf.withSource(prop, loc, cb); |
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} |
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_space() { |
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this._append(" ", true); |
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} |
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_newline() { |
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this._append("\n", true); |
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} |
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_append(str, queue = false) { |
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this._maybeAddParen(str); |
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this._maybeIndent(str); |
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if (queue) this._buf.queue(str);else this._buf.append(str); |
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this._endsWithWord = false; |
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this._endsWithInteger = false; |
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} |
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_maybeIndent(str) { |
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if (this._indent && this.endsWith(10) && str.charCodeAt(0) !== 10) { |
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this._buf.queueIndentation(this._getIndent()); |
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} |
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} |
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_maybeAddParen(str) { |
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const parenPushNewlineState = this._parenPushNewlineState; |
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if (!parenPushNewlineState) return; |
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let i; |
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for (i = 0; i < str.length && str[i] === " "; i++) continue; |
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if (i === str.length) { |
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return; |
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} |
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const cha = str[i]; |
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if (cha !== "\n") { |
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if (cha !== "/" || i + 1 === str.length) { |
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this._parenPushNewlineState = null; |
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return; |
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} |
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const chaPost = str[i + 1]; |
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if (chaPost === "*") { |
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if (PURE_ANNOTATION_RE.test(str.slice(i + 2, str.length - 2))) { |
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return; |
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} |
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} else if (chaPost !== "/") { |
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this._parenPushNewlineState = null; |
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return; |
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} |
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} |
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this.token("("); |
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this.indent(); |
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parenPushNewlineState.printed = true; |
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} |
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_catchUp(prop, loc) { |
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if (!this.format.retainLines) return; |
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const pos = loc ? loc[prop] : null; |
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if ((pos == null ? void 0 : pos.line) != null) { |
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const count = pos.line - this._buf.getCurrentLine(); |
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for (let i = 0; i < count; i++) { |
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this._newline(); |
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} |
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} |
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} |
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_getIndent() { |
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return this.format.indent.style.repeat(this._indent); |
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} |
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printTerminatorless(node, parent, isLabel) { |
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if (isLabel) { |
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this._noLineTerminator = true; |
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this.print(node, parent); |
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this._noLineTerminator = false; |
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} else { |
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const terminatorState = { |
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printed: false |
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}; |
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this._parenPushNewlineState = terminatorState; |
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this.print(node, parent); |
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if (terminatorState.printed) { |
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this.dedent(); |
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this.newline(); |
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this.token(")"); |
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} |
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} |
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} |
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print(node, parent) { |
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if (!node) return; |
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const oldConcise = this.format.concise; |
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if (node._compact) { |
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this.format.concise = true; |
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} |
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const printMethod = this[node.type]; |
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if (!printMethod) { |
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throw new ReferenceError(`unknown node of type ${JSON.stringify(node.type)} with constructor ${JSON.stringify(node == null ? void 0 : node.constructor.name)}`); |
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} |
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this._printStack.push(node); |
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const oldInAux = this._insideAux; |
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this._insideAux = !node.loc; |
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this._maybeAddAuxComment(this._insideAux && !oldInAux); |
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let shouldPrintParens = needsParens(node, parent, this._printStack); |
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if (this.format.retainFunctionParens && node.type === "FunctionExpression" && node.extra && node.extra.parenthesized) { |
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shouldPrintParens = true; |
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} |
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if (shouldPrintParens) this.token("("); |
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this._printLeadingComments(node); |
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const loc = isProgram(node) || isFile(node) ? null : node.loc; |
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this.withSource("start", loc, () => { |
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printMethod.call(this, node, parent); |
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}); |
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this._printTrailingComments(node); |
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if (shouldPrintParens) this.token(")"); |
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this._printStack.pop(); |
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this.format.concise = oldConcise; |
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this._insideAux = oldInAux; |
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} |
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_maybeAddAuxComment(enteredPositionlessNode) { |
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if (enteredPositionlessNode) this._printAuxBeforeComment(); |
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if (!this._insideAux) this._printAuxAfterComment(); |
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} |
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_printAuxBeforeComment() { |
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if (this._printAuxAfterOnNextUserNode) return; |
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this._printAuxAfterOnNextUserNode = true; |
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const comment = this.format.auxiliaryCommentBefore; |
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if (comment) { |
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this._printComment({ |
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type: "CommentBlock", |
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value: comment |
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}); |
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} |
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} |
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_printAuxAfterComment() { |
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if (!this._printAuxAfterOnNextUserNode) return; |
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this._printAuxAfterOnNextUserNode = false; |
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const comment = this.format.auxiliaryCommentAfter; |
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if (comment) { |
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this._printComment({ |
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type: "CommentBlock", |
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value: comment |
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}); |
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} |
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} |
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getPossibleRaw(node) { |
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const extra = node.extra; |
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if (extra && extra.raw != null && extra.rawValue != null && node.value === extra.rawValue) { |
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return extra.raw; |
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} |
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} |
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printJoin(nodes, parent, opts = {}) { |
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if (!(nodes != null && nodes.length)) return; |
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if (opts.indent) this.indent(); |
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const newlineOpts = { |
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addNewlines: opts.addNewlines |
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}; |
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for (let i = 0; i < nodes.length; i++) { |
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const node = nodes[i]; |
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if (!node) continue; |
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if (opts.statement) this._printNewline(true, node, parent, newlineOpts); |
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this.print(node, parent); |
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if (opts.iterator) { |
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opts.iterator(node, i); |
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} |
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if (opts.separator && i < nodes.length - 1) { |
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opts.separator.call(this); |
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} |
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if (opts.statement) this._printNewline(false, node, parent, newlineOpts); |
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} |
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if (opts.indent) this.dedent(); |
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} |
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printAndIndentOnComments(node, parent) { |
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const indent = node.leadingComments && node.leadingComments.length > 0; |
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if (indent) this.indent(); |
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this.print(node, parent); |
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if (indent) this.dedent(); |
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} |
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printBlock(parent) { |
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const node = parent.body; |
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if (!isEmptyStatement(node)) { |
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this.space(); |
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} |
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this.print(node, parent); |
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} |
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_printTrailingComments(node) { |
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this._printComments(this._getComments(false, node)); |
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} |
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_printLeadingComments(node) { |
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this._printComments(this._getComments(true, node), true); |
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} |
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printInnerComments(node, indent = true) { |
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var _node$innerComments; |
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if (!((_node$innerComments = node.innerComments) != null && _node$innerComments.length)) return; |
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if (indent) this.indent(); |
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this._printComments(node.innerComments); |
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if (indent) this.dedent(); |
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} |
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printSequence(nodes, parent, opts = {}) { |
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opts.statement = true; |
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return this.printJoin(nodes, parent, opts); |
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} |
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printList(items, parent, opts = {}) { |
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if (opts.separator == null) { |
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opts.separator = commaSeparator; |
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} |
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return this.printJoin(items, parent, opts); |
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} |
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_printNewline(leading, node, parent, opts) { |
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if (this.format.retainLines || this.format.compact) return; |
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if (this.format.concise) { |
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this.space(); |
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return; |
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} |
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let lines = 0; |
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if (this._buf.hasContent()) { |
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if (!leading) lines++; |
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if (opts.addNewlines) lines += opts.addNewlines(leading, node) || 0; |
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const needs = leading ? needsWhitespaceBefore : needsWhitespaceAfter; |
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if (needs(node, parent)) lines++; |
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} |
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this.newline(Math.min(2, lines)); |
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} |
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_getComments(leading, node) { |
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return node && (leading ? node.leadingComments : node.trailingComments) || []; |
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} |
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_printComment(comment, skipNewLines) { |
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if (!this.format.shouldPrintComment(comment.value)) return; |
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if (comment.ignore) return; |
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if (this._printedComments.has(comment)) return; |
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this._printedComments.add(comment); |
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const isBlockComment = comment.type === "CommentBlock"; |
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const printNewLines = isBlockComment && !skipNewLines && !this._noLineTerminator; |
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if (printNewLines && this._buf.hasContent()) this.newline(1); |
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const lastCharCode = this.getLastChar(); |
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if (lastCharCode !== 91 && lastCharCode !== 123) { |
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this.space(); |
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} |
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let val = !isBlockComment && !this._noLineTerminator ? `//${comment.value}\n` : `/*${comment.value}*/`; |
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if (isBlockComment && this.format.indent.adjustMultilineComment) { |
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var _comment$loc; |
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const offset = (_comment$loc = comment.loc) == null ? void 0 : _comment$loc.start.column; |
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if (offset) { |
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const newlineRegex = new RegExp("\\n\\s{1," + offset + "}", "g"); |
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val = val.replace(newlineRegex, "\n"); |
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} |
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const indentSize = Math.max(this._getIndent().length, this.format.retainLines ? 0 : this._buf.getCurrentColumn()); |
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val = val.replace(/\n(?!$)/g, `\n${" ".repeat(indentSize)}`); |
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} |
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if (this.endsWith(47)) this._space(); |
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this.withSource("start", comment.loc, () => { |
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this._append(val); |
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}); |
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if (printNewLines) this.newline(1); |
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} |
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_printComments(comments, inlinePureAnnotation) { |
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if (!(comments != null && comments.length)) return; |
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if (inlinePureAnnotation && comments.length === 1 && PURE_ANNOTATION_RE.test(comments[0].value)) { |
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this._printComment(comments[0], this._buf.hasContent() && !this.endsWith(10)); |
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} else { |
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for (const comment of comments) { |
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this._printComment(comment); |
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} |
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} |
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} |
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printAssertions(node) { |
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var _node$assertions; |
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if ((_node$assertions = node.assertions) != null && _node$assertions.length) { |
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this.space(); |
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this.word("assert"); |
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this.space(); |
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this.token("{"); |
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this.space(); |
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this.printList(node.assertions, node); |
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this.space(); |
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this.token("}"); |
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} |
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} |
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} |
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Object.assign(Printer.prototype, generatorFunctions); |
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{ |
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Printer.prototype.Noop = function Noop() {}; |
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} |
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var _default = Printer; |
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exports.default = _default; |
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function commaSeparator() { |
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this.token(","); |
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this.space(); |
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} |