540 lines
12 KiB
JavaScript
540 lines
12 KiB
JavaScript
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"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 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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isProgram,
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isFile,
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isEmptyStatement
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} = t;
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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.queue(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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startTerminatorless(isLabel = false) {
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if (isLabel) {
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this._noLineTerminator = true;
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return null;
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} else {
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return this._parenPushNewlineState = {
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printed: false
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};
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}
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}
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endTerminatorless(state) {
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this._noLineTerminator = false;
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if (state != null && state.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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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();
|
||
|
|
|
||
|
|
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();
|
||
|
|
}
|