diff options
Diffstat (limited to 'node_modules/@babel/generator/lib/printer.js')
| -rw-r--r-- | node_modules/@babel/generator/lib/printer.js | 540 |
1 files changed, 540 insertions, 0 deletions
diff --git a/node_modules/@babel/generator/lib/printer.js b/node_modules/@babel/generator/lib/printer.js new file mode 100644 index 0000000..0decd21 --- /dev/null +++ b/node_modules/@babel/generator/lib/printer.js @@ -0,0 +1,540 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = void 0; + +var _buffer = require("./buffer"); + +var n = require("./node"); + +var _t = require("@babel/types"); + +var generatorFunctions = require("./generators"); + +const { + isProgram, + isFile, + isEmptyStatement +} = _t; +const SCIENTIFIC_NOTATION = /e/i; +const ZERO_DECIMAL_INTEGER = /\.0+$/; +const NON_DECIMAL_LITERAL = /^0[box]/; +const PURE_ANNOTATION_RE = /^\s*[@#]__PURE__\s*$/; +const { + needsParens, + needsWhitespaceAfter, + needsWhitespaceBefore +} = n; + +class Printer { + constructor(format, map) { + this.inForStatementInitCounter = 0; + this._printStack = []; + this._indent = 0; + this._insideAux = false; + this._parenPushNewlineState = null; + this._noLineTerminator = false; + this._printAuxAfterOnNextUserNode = false; + this._printedComments = new WeakSet(); + this._endsWithInteger = false; + this._endsWithWord = false; + this.format = format; + this._buf = new _buffer.default(map); + } + + generate(ast) { + this.print(ast); + + this._maybeAddAuxComment(); + + return this._buf.get(); + } + + indent() { + if (this.format.compact || this.format.concise) return; + this._indent++; + } + + dedent() { + if (this.format.compact || this.format.concise) return; + this._indent--; + } + + semicolon(force = false) { + this._maybeAddAuxComment(); + + this._append(";", !force); + } + + rightBrace() { + if (this.format.minified) { + this._buf.removeLastSemicolon(); + } + + this.token("}"); + } + + space(force = false) { + if (this.format.compact) return; + + if (force) { + this._space(); + } else if (this._buf.hasContent()) { + const lastCp = this.getLastChar(); + + if (lastCp !== 32 && lastCp !== 10) { + this._space(); + } + } + } + + word(str) { + if (this._endsWithWord || this.endsWith(47) && str.charCodeAt(0) === 47) { + this._space(); + } + + this._maybeAddAuxComment(); + + this._append(str); + + this._endsWithWord = true; + } + + number(str) { + this.word(str); + 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; + } + + token(str) { + const lastChar = this.getLastChar(); + const strFirst = str.charCodeAt(0); + + if (str === "--" && lastChar === 33 || strFirst === 43 && lastChar === 43 || strFirst === 45 && lastChar === 45 || strFirst === 46 && this._endsWithInteger) { + this._space(); + } + + this._maybeAddAuxComment(); + + this._append(str); + } + + newline(i = 1) { + if (this.format.retainLines || this.format.compact) return; + + if (this.format.concise) { + this.space(); + return; + } + + const charBeforeNewline = this.endsWithCharAndNewline(); + if (charBeforeNewline === 10) return; + + if (charBeforeNewline === 123 || charBeforeNewline === 58) { + i--; + } + + if (i <= 0) return; + + for (let j = 0; j < i; j++) { + this._newline(); + } + } + + endsWith(char) { + return this.getLastChar() === char; + } + + getLastChar() { + return this._buf.getLastChar(); + } + + endsWithCharAndNewline() { + return this._buf.endsWithCharAndNewline(); + } + + removeTrailingNewline() { + this._buf.removeTrailingNewline(); + } + + exactSource(loc, cb) { + this._catchUp("start", loc); + + this._buf.exactSource(loc, cb); + } + + source(prop, loc) { + this._catchUp(prop, loc); + + this._buf.source(prop, loc); + } + + withSource(prop, loc, cb) { + this._catchUp(prop, loc); + + this._buf.withSource(prop, loc, cb); + } + + _space() { + this._append(" ", true); + } + + _newline() { + this._append("\n", true); + } + + _append(str, queue = false) { + this._maybeAddParen(str); + + this._maybeIndent(str); + + if (queue) this._buf.queue(str);else this._buf.append(str); + this._endsWithWord = false; + this._endsWithInteger = false; + } + + _maybeIndent(str) { + if (this._indent && this.endsWith(10) && str.charCodeAt(0) !== 10) { + this._buf.queue(this._getIndent()); + } + } + + _maybeAddParen(str) { + const parenPushNewlineState = this._parenPushNewlineState; + if (!parenPushNewlineState) return; + let i; + + for (i = 0; i < str.length && str[i] === " "; i++) continue; + + if (i === str.length) { + return; + } + + const cha = str[i]; + + if (cha !== "\n") { + if (cha !== "/" || i + 1 === str.length) { + this._parenPushNewlineState = null; + return; + } + + const chaPost = str[i + 1]; + + if (chaPost === "*") { + if (PURE_ANNOTATION_RE.test(str.slice(i + 2, str.length - 2))) { + return; + } + } else if (chaPost !== "/") { + this._parenPushNewlineState = null; + return; + } + } + + this.token("("); + this.indent(); + parenPushNewlineState.printed = true; + } + + _catchUp(prop, loc) { + if (!this.format.retainLines) return; + const pos = loc ? loc[prop] : null; + + if ((pos == null ? void 0 : pos.line) != null) { + const count = pos.line - this._buf.getCurrentLine(); + + for (let i = 0; i < count; i++) { + this._newline(); + } + } + } + + _getIndent() { + return this.format.indent.style.repeat(this._indent); + } + + startTerminatorless(isLabel = false) { + if (isLabel) { + this._noLineTerminator = true; + return null; + } else { + return this._parenPushNewlineState = { + printed: false + }; + } + } + + endTerminatorless(state) { + this._noLineTerminator = false; + + if (state != null && state.printed) { + this.dedent(); + this.newline(); + this.token(")"); + } + } + + print(node, parent) { + if (!node) return; + const oldConcise = this.format.concise; + + if (node._compact) { + this.format.concise = true; + } + + const printMethod = this[node.type]; + + if (!printMethod) { + throw new ReferenceError(`unknown node of type ${JSON.stringify(node.type)} with constructor ${JSON.stringify(node == null ? void 0 : node.constructor.name)}`); + } + + this._printStack.push(node); + + const oldInAux = this._insideAux; + this._insideAux = !node.loc; + + this._maybeAddAuxComment(this._insideAux && !oldInAux); + + let shouldPrintParens = needsParens(node, parent, this._printStack); + + if (this.format.retainFunctionParens && node.type === "FunctionExpression" && node.extra && node.extra.parenthesized) { + shouldPrintParens = true; + } + + if (shouldPrintParens) this.token("("); + + this._printLeadingComments(node); + + const loc = isProgram(node) || isFile(node) ? null : node.loc; + this.withSource("start", loc, () => { + printMethod.call(this, node, parent); + }); + + this._printTrailingComments(node); + + if (shouldPrintParens) this.token(")"); + + this._printStack.pop(); + + this.format.concise = oldConcise; + this._insideAux = oldInAux; + } + + _maybeAddAuxComment(enteredPositionlessNode) { + if (enteredPositionlessNode) this._printAuxBeforeComment(); + if (!this._insideAux) this._printAuxAfterComment(); + } + + _printAuxBeforeComment() { + if (this._printAuxAfterOnNextUserNode) return; + this._printAuxAfterOnNextUserNode = true; + const comment = this.format.auxiliaryCommentBefore; + + if (comment) { + this._printComment({ + type: "CommentBlock", + value: comment + }); + } + } + + _printAuxAfterComment() { + if (!this._printAuxAfterOnNextUserNode) return; + this._printAuxAfterOnNextUserNode = false; + const comment = this.format.auxiliaryCommentAfter; + + if (comment) { + this._printComment({ + type: "CommentBlock", + value: comment + }); + } + } + + getPossibleRaw(node) { + const extra = node.extra; + + if (extra && extra.raw != null && extra.rawValue != null && node.value === extra.rawValue) { + return extra.raw; + } + } + + printJoin(nodes, parent, opts = {}) { + if (!(nodes != null && nodes.length)) return; + if (opts.indent) this.indent(); + const newlineOpts = { + addNewlines: opts.addNewlines + }; + + for (let i = 0; i < nodes.length; i++) { + const node = nodes[i]; + if (!node) continue; + if (opts.statement) this._printNewline(true, node, parent, newlineOpts); + this.print(node, parent); + + if (opts.iterator) { + opts.iterator(node, i); + } + + if (opts.separator && i < nodes.length - 1) { + opts.separator.call(this); + } + + if (opts.statement) this._printNewline(false, node, parent, newlineOpts); + } + + if (opts.indent) this.dedent(); + } + + printAndIndentOnComments(node, parent) { + const indent = node.leadingComments && node.leadingComments.length > 0; + if (indent) this.indent(); + this.print(node, parent); + if (indent) this.dedent(); + } + + printBlock(parent) { + const node = parent.body; + + if (!isEmptyStatement(node)) { + this.space(); + } + + this.print(node, parent); + } + + _printTrailingComments(node) { + this._printComments(this._getComments(false, node)); + } + + _printLeadingComments(node) { + this._printComments(this._getComments(true, node), true); + } + + printInnerComments(node, indent = true) { + var _node$innerComments; + + if (!((_node$innerComments = node.innerComments) != null && _node$innerComments.length)) return; + if (indent) this.indent(); + + this._printComments(node.innerComments); + + if (indent) this.dedent(); + } + + printSequence(nodes, parent, opts = {}) { + opts.statement = true; + return this.printJoin(nodes, parent, opts); + } + + printList(items, parent, opts = {}) { + if (opts.separator == null) { + opts.separator = commaSeparator; + } + + return this.printJoin(items, parent, opts); + } + + _printNewline(leading, node, parent, opts) { + if (this.format.retainLines || this.format.compact) return; + + if (this.format.concise) { + this.space(); + return; + } + + let lines = 0; + + if (this._buf.hasContent()) { + if (!leading) lines++; + if (opts.addNewlines) lines += opts.addNewlines(leading, node) || 0; + const needs = leading ? needsWhitespaceBefore : needsWhitespaceAfter; + if (needs(node, parent)) lines++; + } + + this.newline(Math.min(2, lines)); + } + + _getComments(leading, node) { + return node && (leading ? node.leadingComments : node.trailingComments) || []; + } + + _printComment(comment, skipNewLines) { + if (!this.format.shouldPrintComment(comment.value)) return; + if (comment.ignore) return; + if (this._printedComments.has(comment)) return; + + this._printedComments.add(comment); + + const isBlockComment = comment.type === "CommentBlock"; + const printNewLines = isBlockComment && !skipNewLines && !this._noLineTerminator; + if (printNewLines && this._buf.hasContent()) this.newline(1); + const lastCharCode = this.getLastChar(); + + if (lastCharCode !== 91 && lastCharCode !== 123) { + this.space(); + } + + let val = !isBlockComment && !this._noLineTerminator ? `//${comment.value}\n` : `/*${comment.value}*/`; + + if (isBlockComment && this.format.indent.adjustMultilineComment) { + var _comment$loc; + + const offset = (_comment$loc = comment.loc) == null ? void 0 : _comment$loc.start.column; + + if (offset) { + const newlineRegex = new RegExp("\\n\\s{1," + offset + "}", "g"); + val = val.replace(newlineRegex, "\n"); + } + + const indentSize = Math.max(this._getIndent().length, this.format.retainLines ? 0 : this._buf.getCurrentColumn()); + val = val.replace(/\n(?!$)/g, `\n${" ".repeat(indentSize)}`); + } + + if (this.endsWith(47)) this._space(); + this.withSource("start", comment.loc, () => { + this._append(val); + }); + if (printNewLines) this.newline(1); + } + + _printComments(comments, inlinePureAnnotation) { + if (!(comments != null && comments.length)) return; + + if (inlinePureAnnotation && comments.length === 1 && PURE_ANNOTATION_RE.test(comments[0].value)) { + this._printComment(comments[0], this._buf.hasContent() && !this.endsWith(10)); + } else { + for (const comment of comments) { + this._printComment(comment); + } + } + } + + printAssertions(node) { + var _node$assertions; + + if ((_node$assertions = node.assertions) != null && _node$assertions.length) { + this.space(); + this.word("assert"); + this.space(); + this.token("{"); + this.space(); + this.printList(node.assertions, node); + this.space(); + this.token("}"); + } + } + +} + +Object.assign(Printer.prototype, generatorFunctions); +{ + Printer.prototype.Noop = function Noop() {}; +} +var _default = Printer; +exports.default = _default; + +function commaSeparator() { + this.token(","); + this.space(); +}
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