@babel/generator/lib/printer.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;
var _buffer = require("./buffer.js");
var n = require("./node/index.js");
var _t = require("@babel/types");
var generatorFunctions = require("./generators/index.js");
const {
  isFunction,
  isStatement,
  isClassBody,
  isTSInterfaceBody,
  isTSEnumDeclaration
} = _t;
const SCIENTIFIC_NOTATION = /e/i;
const ZERO_DECIMAL_INTEGER = /\.0+$/;
const HAS_NEWLINE = /[\n\r\u2028\u2029]/;
const HAS_NEWLINE_OR_BlOCK_COMMENT_END = /[\n\r\u2028\u2029]|\*\//;
const {
  needsParens
} = n;
class Printer {
  constructor(format, map) {
    this.inForStatementInitCounter = 0;
    this._printStack = [];
    this._indent = 0;
    this._indentRepeat = 0;
    this._insideAux = false;
    this._parenPushNewlineState = null;
    this._noLineTerminator = false;
    this._printAuxAfterOnNextUserNode = false;
    this._printedComments = new Set();
    this._endsWithInteger = false;
    this._endsWithWord = false;
    this._lastCommentLine = 0;
    this._endsWithInnerRaw = false;
    this._indentInnerComments = true;
    this.format = format;
    this._indentRepeat = format.indent.style.length;
    this._inputMap = map == null ? void 0 : map._inputMap;
    this._buf = new _buffer.default(map, format.indent.style[0]);
  }
  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();
    if (force) {
      this._appendChar(59);
    } else {
      this._queue(59);
    }
    this._noLineTerminator = false;
  }
  rightBrace(node) {
    if (this.format.minified) {
      this._buf.removeLastSemicolon();
    }
    this.sourceWithOffset("end", node.loc, -1);
    this.tokenChar(125);
  }
  rightParens(node) {
    this.sourceWithOffset("end", node.loc, -1);
    this.tokenChar(41);
  }
  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, noLineTerminatorAfter = false) {
    this._maybePrintInnerComments();
    if (this._endsWithWord || str.charCodeAt(0) === 47 && this.endsWith(47)) {
      this._space();
    }
    this._maybeAddAuxComment();
    this._append(str, false);
    this._endsWithWord = true;
    this._noLineTerminator = noLineTerminatorAfter;
  }
  number(str, number) {
    function isNonDecimalLiteral(str) {
      if (str.length > 2 && str.charCodeAt(0) === 48) {
        const secondChar = str.charCodeAt(1);
        return secondChar === 98 || secondChar === 111 || secondChar === 120;
      }
      return false;
    }
    this.word(str);
    this._endsWithInteger = Number.isInteger(number) && !isNonDecimalLiteral(str) && !SCIENTIFIC_NOTATION.test(str) && !ZERO_DECIMAL_INTEGER.test(str) && str.charCodeAt(str.length - 1) !== 46;
  }
  token(str, maybeNewline = false) {
    this._maybePrintInnerComments();
    const lastChar = this.getLastChar();
    const strFirst = str.charCodeAt(0);
    if (lastChar === 33 && (str === "--" || strFirst === 61) || strFirst === 43 && lastChar === 43 || strFirst === 45 && lastChar === 45 || strFirst === 46 && this._endsWithInteger) {
      this._space();
    }
    this._maybeAddAuxComment();
    this._append(str, maybeNewline);
    this._noLineTerminator = false;
  }
  tokenChar(char) {
    this._maybePrintInnerComments();
    const lastChar = this.getLastChar();
    if (char === 43 && lastChar === 43 || char === 45 && lastChar === 45 || char === 46 && this._endsWithInteger) {
      this._space();
    }
    this._maybeAddAuxComment();
    this._appendChar(char);
    this._noLineTerminator = false;
  }
  newline(i = 1, force) {
    if (i <= 0) return;
    if (!force) {
      if (this.format.retainLines || this.format.compact) return;
      if (this.format.concise) {
        this.space();
        return;
      }
    }
    if (i > 2) i = 2;
    i -= this._buf.getNewlineCount();
    for (let j = 0; j < i; j++) {
      this._newline();
    }
    return;
  }
  endsWith(char) {
    return this.getLastChar() === char;
  }
  getLastChar() {
    return this._buf.getLastChar();
  }
  endsWithCharAndNewline() {
    return this._buf.endsWithCharAndNewline();
  }
  removeTrailingNewline() {
    this._buf.removeTrailingNewline();
  }
  exactSource(loc, cb) {
    if (!loc) {
      cb();
      return;
    }
    this._catchUp("start", loc);
    this._buf.exactSource(loc, cb);
  }
  source(prop, loc) {
    if (!loc) return;
    this._catchUp(prop, loc);
    this._buf.source(prop, loc);
  }
  sourceWithOffset(prop, loc, columnOffset) {
    if (!loc) return;
    this._catchUp(prop, loc);
    this._buf.sourceWithOffset(prop, loc, columnOffset);
  }
  withSource(prop, loc, cb) {
    if (!loc) {
      cb();
      return;
    }
    this._catchUp(prop, loc);
    this._buf.withSource(prop, loc, cb);
  }
  sourceIdentifierName(identifierName, pos) {
    if (!this._buf._canMarkIdName) return;
    const sourcePosition = this._buf._sourcePosition;
    sourcePosition.identifierNamePos = pos;
    sourcePosition.identifierName = identifierName;
  }
  _space() {
    this._queue(32);
  }
  _newline() {
    this._queue(10);
  }
  _append(str, maybeNewline) {
    this._maybeAddParen(str);
    this._maybeIndent(str.charCodeAt(0));
    this._buf.append(str, maybeNewline);
    this._endsWithWord = false;
    this._endsWithInteger = false;
  }
  _appendChar(char) {
    this._maybeAddParenChar(char);
    this._maybeIndent(char);
    this._buf.appendChar(char);
    this._endsWithWord = false;
    this._endsWithInteger = false;
  }
  _queue(char) {
    this._maybeAddParenChar(char);
    this._maybeIndent(char);
    this._buf.queue(char);
    this._endsWithWord = false;
    this._endsWithInteger = false;
  }
  _maybeIndent(firstChar) {
    if (this._indent && firstChar !== 10 && this.endsWith(10)) {
      this._buf.queueIndentation(this._getIndent());
    }
  }
  _shouldIndent(firstChar) {
    if (this._indent && firstChar !== 10 && this.endsWith(10)) {
      return true;
    }
  }
  _maybeAddParenChar(char) {
    const parenPushNewlineState = this._parenPushNewlineState;
    if (!parenPushNewlineState) return;
    if (char === 32) {
      return;
    }
    if (char !== 10) {
      this._parenPushNewlineState = null;
      return;
    }
    this.tokenChar(40);
    this.indent();
    parenPushNewlineState.printed = true;
  }
  _maybeAddParen(str) {
    const parenPushNewlineState = this._parenPushNewlineState;
    if (!parenPushNewlineState) return;
    const len = str.length;
    let i;
    for (i = 0; i < len && str.charCodeAt(i) === 32; i++) continue;
    if (i === len) {
      return;
    }
    const cha = str.charCodeAt(i);
    if (cha !== 10) {
      if (cha !== 47 || i + 1 === len) {
        this._parenPushNewlineState = null;
        return;
      }
      const chaPost = str.charCodeAt(i + 1);
      if (chaPost === 42) {
        return;
      } else if (chaPost !== 47) {
        this._parenPushNewlineState = null;
        return;
      }
    }
    this.tokenChar(40);
    this.indent();
    parenPushNewlineState.printed = true;
  }
  catchUp(line) {
    if (!this.format.retainLines) return;
    const count = line - this._buf.getCurrentLine();
    for (let i = 0; i < count; i++) {
      this._newline();
    }
  }
  _catchUp(prop, loc) {
    var _loc$prop;
    if (!this.format.retainLines) return;
    const line = loc == null || (_loc$prop = loc[prop]) == null ? void 0 : _loc$prop.line;
    if (line != null) {
      const count = line - this._buf.getCurrentLine();
      for (let i = 0; i < count; i++) {
        this._newline();
      }
    }
  }
  _getIndent() {
    return this._indentRepeat * this._indent;
  }
  printTerminatorless(node, parent, isLabel) {
    if (isLabel) {
      this._noLineTerminator = true;
      this.print(node, parent);
    } else {
      const terminatorState = {
        printed: false
      };
      this._parenPushNewlineState = terminatorState;
      this.print(node, parent);
      if (terminatorState.printed) {
        this.dedent();
        this.newline();
        this.tokenChar(41);
      }
    }
  }
  print(node, parent, noLineTerminatorAfter, trailingCommentsLineOffset, forceParens) {
    var _node$extra, _node$leadingComments;
    if (!node) return;
    this._endsWithInnerRaw = false;
    const nodeType = node.type;
    const format = this.format;
    const oldConcise = format.concise;
    if (node._compact) {
      format.concise = true;
    }
    const printMethod = this[nodeType];
    if (printMethod === undefined) {
      throw new ReferenceError(`unknown node of type ${JSON.stringify(nodeType)} with constructor ${JSON.stringify(node.constructor.name)}`);
    }
    this._printStack.push(node);
    const oldInAux = this._insideAux;
    this._insideAux = node.loc == null;
    this._maybeAddAuxComment(this._insideAux && !oldInAux);
    const parenthesized = (_node$extra = node.extra) == null ? void 0 : _node$extra.parenthesized;
    let shouldPrintParens = forceParens || parenthesized && format.retainFunctionParens && nodeType === "FunctionExpression" || needsParens(node, parent, this._printStack);
    if (!shouldPrintParens && parenthesized && (_node$leadingComments = node.leadingComments) != null && _node$leadingComments.length && node.leadingComments[0].type === "CommentBlock") {
      const parentType = parent == null ? void 0 : parent.type;
      switch (parentType) {
        case "ExpressionStatement":
        case "VariableDeclarator":
        case "AssignmentExpression":
        case "ReturnStatement":
          break;
        case "CallExpression":
        case "OptionalCallExpression":
        case "NewExpression":
          if (parent.callee !== node) break;
        default:
          shouldPrintParens = true;
      }
    }
    if (shouldPrintParens) {
      this.tokenChar(40);
      this._endsWithInnerRaw = false;
    }
    this._lastCommentLine = 0;
    this._printLeadingComments(node, parent);
    const loc = nodeType === "Program" || nodeType === "File" ? null : node.loc;
    this.exactSource(loc, printMethod.bind(this, node, parent));
    if (shouldPrintParens) {
      this._printTrailingComments(node, parent);
      this.tokenChar(41);
      this._noLineTerminator = noLineTerminatorAfter;
    } else if (noLineTerminatorAfter && !this._noLineTerminator) {
      this._noLineTerminator = true;
      this._printTrailingComments(node, parent);
    } else {
      this._printTrailingComments(node, parent, trailingCommentsLineOffset);
    }
    this._printStack.pop();
    format.concise = oldConcise;
    this._insideAux = oldInAux;
    this._endsWithInnerRaw = false;
  }
  _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
      }, 0);
    }
  }
  _printAuxAfterComment() {
    if (!this._printAuxAfterOnNextUserNode) return;
    this._printAuxAfterOnNextUserNode = false;
    const comment = this.format.auxiliaryCommentAfter;
    if (comment) {
      this._printComment({
        type: "CommentBlock",
        value: comment
      }, 0);
    }
  }
  getPossibleRaw(node) {
    const extra = node.extra;
    if ((extra == null ? void 0 : extra.raw) != null && extra.rawValue != null && node.value === extra.rawValue) {
      return extra.raw;
    }
  }
  printJoin(nodes, parent, opts = {}) {
    if (!(nodes != null && nodes.length)) return;
    let {
      indent
    } = opts;
    if (indent == null && this.format.retainLines) {
      var _nodes$0$loc;
      const startLine = (_nodes$0$loc = nodes[0].loc) == null ? void 0 : _nodes$0$loc.start.line;
      if (startLine != null && startLine !== this._buf.getCurrentLine()) {
        indent = true;
      }
    }
    if (indent) this.indent();
    const newlineOpts = {
      addNewlines: opts.addNewlines,
      nextNodeStartLine: 0
    };
    const separator = opts.separator ? opts.separator.bind(this) : null;
    const len = nodes.length;
    for (let i = 0; i < len; i++) {
      const node = nodes[i];
      if (!node) continue;
      if (opts.statement) this._printNewline(i === 0, newlineOpts);
      this.print(node, parent, undefined, opts.trailingCommentsLineOffset || 0);
      opts.iterator == null || opts.iterator(node, i);
      if (i < len - 1) separator == null || separator();
      if (opts.statement) {
        var _node$trailingComment;
        if (!((_node$trailingComment = node.trailingComments) != null && _node$trailingComment.length)) {
          this._lastCommentLine = 0;
        }
        if (i + 1 === len) {
          this.newline(1);
        } else {
          var _nextNode$loc;
          const nextNode = nodes[i + 1];
          newlineOpts.nextNodeStartLine = ((_nextNode$loc = nextNode.loc) == null ? void 0 : _nextNode$loc.start.line) || 0;
          this._printNewline(true, newlineOpts);
        }
      }
    }
    if (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 (node.type !== "EmptyStatement") {
      this.space();
    }
    this.print(node, parent);
  }
  _printTrailingComments(node, parent, lineOffset) {
    const {
      innerComments,
      trailingComments
    } = node;
    if (innerComments != null && innerComments.length) {
      this._printComments(2, innerComments, node, parent, lineOffset);
    }
    if (trailingComments != null && trailingComments.length) {
      this._printComments(2, trailingComments, node, parent, lineOffset);
    }
  }
  _printLeadingComments(node, parent) {
    const comments = node.leadingComments;
    if (!(comments != null && comments.length)) return;
    this._printComments(0, comments, node, parent);
  }
  _maybePrintInnerComments() {
    if (this._endsWithInnerRaw) this.printInnerComments();
    this._endsWithInnerRaw = true;
    this._indentInnerComments = true;
  }
  printInnerComments() {
    const node = this._printStack[this._printStack.length - 1];
    const comments = node.innerComments;
    if (!(comments != null && comments.length)) return;
    const hasSpace = this.endsWith(32);
    const indent = this._indentInnerComments;
    const printedCommentsCount = this._printedComments.size;
    if (indent) this.indent();
    this._printComments(1, comments, node);
    if (hasSpace && printedCommentsCount !== this._printedComments.size) {
      this.space();
    }
    if (indent) this.dedent();
  }
  noIndentInnerCommentsHere() {
    this._indentInnerComments = false;
  }
  printSequence(nodes, parent, opts = {}) {
    var _opts$indent;
    opts.statement = true;
    (_opts$indent = opts.indent) != null ? _opts$indent : opts.indent = false;
    this.printJoin(nodes, parent, opts);
  }
  printList(items, parent, opts = {}) {
    if (opts.separator == null) {
      opts.separator = commaSeparator;
    }
    this.printJoin(items, parent, opts);
  }
  _printNewline(newLine, opts) {
    const format = this.format;
    if (format.retainLines || format.compact) return;
    if (format.concise) {
      this.space();
      return;
    }
    if (!newLine) {
      return;
    }
    const startLine = opts.nextNodeStartLine;
    const lastCommentLine = this._lastCommentLine;
    if (startLine > 0 && lastCommentLine > 0) {
      const offset = startLine - lastCommentLine;
      if (offset >= 0) {
        this.newline(offset || 1);
        return;
      }
    }
    if (this._buf.hasContent()) {
      this.newline(1);
    }
  }
  _shouldPrintComment(comment) {
    if (comment.ignore) return 0;
    if (this._printedComments.has(comment)) return 0;
    if (this._noLineTerminator && HAS_NEWLINE_OR_BlOCK_COMMENT_END.test(comment.value)) {
      return 2;
    }
    this._printedComments.add(comment);
    if (!this.format.shouldPrintComment(comment.value)) {
      return 0;
    }
    return 1;
  }
  _printComment(comment, skipNewLines) {
    const noLineTerminator = this._noLineTerminator;
    const isBlockComment = comment.type === "CommentBlock";
    const printNewLines = isBlockComment && skipNewLines !== 1 && !this._noLineTerminator;
    if (printNewLines && this._buf.hasContent() && skipNewLines !== 2) {
      this.newline(1);
    }
    const lastCharCode = this.getLastChar();
    if (lastCharCode !== 91 && lastCharCode !== 123) {
      this.space();
    }
    let val;
    if (isBlockComment) {
      const {
        _parenPushNewlineState
      } = this;
      if ((_parenPushNewlineState == null ? void 0 : _parenPushNewlineState.printed) === false && HAS_NEWLINE.test(comment.value)) {
        this.tokenChar(40);
        this.indent();
        _parenPushNewlineState.printed = true;
      }
      val = `/*${comment.value}*/`;
      if (this.format.indent.adjustMultilineComment) {
        var _comment$loc;
        const offset = (_comment$loc = comment.loc) == null ? void 0 : _comment$loc.start.column;
        if (offset) {
          const newlineRegex = new RegExp("\\n\\s{1," + offset + "}", "g");
          val = val.replace(newlineRegex, "\n");
        }
        if (this.format.concise) {
          val = val.replace(/\n(?!$)/g, `\n`);
        } else {
          let indentSize = this.format.retainLines ? 0 : this._buf.getCurrentColumn();
          if (this._shouldIndent(47) || this.format.retainLines) {
            indentSize += this._getIndent();
          }
          val = val.replace(/\n(?!$)/g, `\n${" ".repeat(indentSize)}`);
        }
      }
    } else if (!noLineTerminator) {
      val = `//${comment.value}`;
    } else {
      val = `/*${comment.value}*/`;
    }
    if (this.endsWith(47)) this._space();
    this.source("start", comment.loc);
    this._append(val, isBlockComment);
    if (!isBlockComment && !noLineTerminator) {
      this.newline(1, true);
    }
    if (printNewLines && skipNewLines !== 3) {
      this.newline(1);
    }
  }
  _printComments(type, comments, node, parent, lineOffset = 0) {
    const nodeLoc = node.loc;
    const len = comments.length;
    let hasLoc = !!nodeLoc;
    const nodeStartLine = hasLoc ? nodeLoc.start.line : 0;
    const nodeEndLine = hasLoc ? nodeLoc.end.line : 0;
    let lastLine = 0;
    let leadingCommentNewline = 0;
    const maybeNewline = this._noLineTerminator ? function () {} : this.newline.bind(this);
    for (let i = 0; i < len; i++) {
      const comment = comments[i];
      const shouldPrint = this._shouldPrintComment(comment);
      if (shouldPrint === 2) {
        hasLoc = false;
        break;
      }
      if (hasLoc && comment.loc && shouldPrint === 1) {
        const commentStartLine = comment.loc.start.line;
        const commentEndLine = comment.loc.end.line;
        if (type === 0) {
          let offset = 0;
          if (i === 0) {
            if (this._buf.hasContent() && (comment.type === "CommentLine" || commentStartLine !== commentEndLine)) {
              offset = leadingCommentNewline = 1;
            }
          } else {
            offset = commentStartLine - lastLine;
          }
          lastLine = commentEndLine;
          maybeNewline(offset);
          this._printComment(comment, 1);
          if (i + 1 === len) {
            maybeNewline(Math.max(nodeStartLine - lastLine, leadingCommentNewline));
            lastLine = nodeStartLine;
          }
        } else if (type === 1) {
          const offset = commentStartLine - (i === 0 ? nodeStartLine : lastLine);
          lastLine = commentEndLine;
          maybeNewline(offset);
          this._printComment(comment, 1);
          if (i + 1 === len) {
            maybeNewline(Math.min(1, nodeEndLine - lastLine));
            lastLine = nodeEndLine;
          }
        } else {
          const offset = commentStartLine - (i === 0 ? nodeEndLine - lineOffset : lastLine);
          lastLine = commentEndLine;
          maybeNewline(offset);
          this._printComment(comment, 1);
        }
      } else {
        hasLoc = false;
        if (shouldPrint !== 1) {
          continue;
        }
        if (len === 1) {
          const singleLine = comment.loc ? comment.loc.start.line === comment.loc.end.line : !HAS_NEWLINE.test(comment.value);
          const shouldSkipNewline = singleLine && !isStatement(node) && !isClassBody(parent) && !isTSInterfaceBody(parent) && !isTSEnumDeclaration(parent);
          if (type === 0) {
            this._printComment(comment, shouldSkipNewline && node.type !== "ObjectExpression" || singleLine && isFunction(parent, {
              body: node
            }) ? 1 : 0);
          } else if (shouldSkipNewline && type === 2) {
            this._printComment(comment, 1);
          } else {
            this._printComment(comment, 0);
          }
        } else if (type === 1 && !(node.type === "ObjectExpression" && node.properties.length > 1) && node.type !== "ClassBody" && node.type !== "TSInterfaceBody") {
          this._printComment(comment, i === 0 ? 2 : i === len - 1 ? 3 : 0);
        } else {
          this._printComment(comment, 0);
        }
      }
    }
    if (type === 2 && hasLoc && lastLine) {
      this._lastCommentLine = lastLine;
    }
  }
}
Object.assign(Printer.prototype, generatorFunctions);
{
  Printer.prototype.Noop = function Noop() {};
}
var _default = exports.default = Printer;
function commaSeparator() {
  this.tokenChar(44);
  this.space();
}

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