kpt-pasture/node_modules/@babel/parser/lib/plugins/jsx/index.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _xhtml = _interopRequireDefault(require("./xhtml"));

var _types = require("../../tokenizer/types");

var _context = require("../../tokenizer/context");

var N = _interopRequireWildcard(require("../../types"));

var _identifier = require("../../util/identifier");

var _whitespace = require("../../util/whitespace");

var _error = require("../../parser/error");

function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const HEX_NUMBER = /^[\da-fA-F]+$/;
const DECIMAL_NUMBER = /^\d+$/;
const JsxErrors = Object.freeze({
  AttributeIsEmpty: "JSX attributes must only be assigned a non-empty expression",
  MissingClosingTagFragment: "Expected corresponding JSX closing tag for <>",
  MissingClosingTagElement: "Expected corresponding JSX closing tag for <%0>",
  UnsupportedJsxValue: "JSX value should be either an expression or a quoted JSX text",
  UnterminatedJsxContent: "Unterminated JSX contents",
  UnwrappedAdjacentJSXElements: "Adjacent JSX elements must be wrapped in an enclosing tag. Did you want a JSX fragment <>...</>?"
});
_context.types.j_oTag = new _context.TokContext("<tag", false);
_context.types.j_cTag = new _context.TokContext("</tag", false);
_context.types.j_expr = new _context.TokContext("<tag>...</tag>", true, true);
_types.types.jsxName = new _types.TokenType("jsxName");
_types.types.jsxText = new _types.TokenType("jsxText", {
  beforeExpr: true
});
_types.types.jsxTagStart = new _types.TokenType("jsxTagStart", {
  startsExpr: true
});
_types.types.jsxTagEnd = new _types.TokenType("jsxTagEnd");

_types.types.jsxTagStart.updateContext = function () {
  this.state.context.push(_context.types.j_expr);
  this.state.context.push(_context.types.j_oTag);
  this.state.exprAllowed = false;
};

_types.types.jsxTagEnd.updateContext = function (prevType) {
  const out = this.state.context.pop();

  if (out === _context.types.j_oTag && prevType === _types.types.slash || out === _context.types.j_cTag) {
    this.state.context.pop();
    this.state.exprAllowed = this.curContext() === _context.types.j_expr;
  } else {
    this.state.exprAllowed = true;
  }
};

function isFragment(object) {
  return object ? object.type === "JSXOpeningFragment" || object.type === "JSXClosingFragment" : false;
}

function getQualifiedJSXName(object) {
  if (object.type === "JSXIdentifier") {
    return object.name;
  }

  if (object.type === "JSXNamespacedName") {
    return object.namespace.name + ":" + object.name.name;
  }

  if (object.type === "JSXMemberExpression") {
    return getQualifiedJSXName(object.object) + "." + getQualifiedJSXName(object.property);
  }

  throw new Error("Node had unexpected type: " + object.type);
}

var _default = superClass => class extends superClass {
  jsxReadToken() {
    let out = "";
    let chunkStart = this.state.pos;

    for (;;) {
      if (this.state.pos >= this.length) {
        throw this.raise(this.state.start, JsxErrors.UnterminatedJsxContent);
      }

      const ch = this.input.charCodeAt(this.state.pos);

      switch (ch) {
        case 60:
        case 123:
          if (this.state.pos === this.state.start) {
            if (ch === 60 && this.state.exprAllowed) {
              ++this.state.pos;
              return this.finishToken(_types.types.jsxTagStart);
            }

            return super.getTokenFromCode(ch);
          }

          out += this.input.slice(chunkStart, this.state.pos);
          return this.finishToken(_types.types.jsxText, out);

        case 38:
          out += this.input.slice(chunkStart, this.state.pos);
          out += this.jsxReadEntity();
          chunkStart = this.state.pos;
          break;

        default:
          if ((0, _whitespace.isNewLine)(ch)) {
            out += this.input.slice(chunkStart, this.state.pos);
            out += this.jsxReadNewLine(true);
            chunkStart = this.state.pos;
          } else {
            ++this.state.pos;
          }

      }
    }
  }

  jsxReadNewLine(normalizeCRLF) {
    const ch = this.input.charCodeAt(this.state.pos);
    let out;
    ++this.state.pos;

    if (ch === 13 && this.input.charCodeAt(this.state.pos) === 10) {
      ++this.state.pos;
      out = normalizeCRLF ? "\n" : "\r\n";
    } else {
      out = String.fromCharCode(ch);
    }

    ++this.state.curLine;
    this.state.lineStart = this.state.pos;
    return out;
  }

  jsxReadString(quote) {
    let out = "";
    let chunkStart = ++this.state.pos;

    for (;;) {
      if (this.state.pos >= this.length) {
        throw this.raise(this.state.start, _error.Errors.UnterminatedString);
      }

      const ch = this.input.charCodeAt(this.state.pos);
      if (ch === quote) break;

      if (ch === 38) {
        out += this.input.slice(chunkStart, this.state.pos);
        out += this.jsxReadEntity();
        chunkStart = this.state.pos;
      } else if ((0, _whitespace.isNewLine)(ch)) {
        out += this.input.slice(chunkStart, this.state.pos);
        out += this.jsxReadNewLine(false);
        chunkStart = this.state.pos;
      } else {
        ++this.state.pos;
      }
    }

    out += this.input.slice(chunkStart, this.state.pos++);
    return this.finishToken(_types.types.string, out);
  }

  jsxReadEntity() {
    let str = "";
    let count = 0;
    let entity;
    let ch = this.input[this.state.pos];
    const startPos = ++this.state.pos;

    while (this.state.pos < this.length && count++ < 10) {
      ch = this.input[this.state.pos++];

      if (ch === ";") {
        if (str[0] === "#") {
          if (str[1] === "x") {
            str = str.substr(2);

            if (HEX_NUMBER.test(str)) {
              entity = String.fromCodePoint(parseInt(str, 16));
            }
          } else {
            str = str.substr(1);

            if (DECIMAL_NUMBER.test(str)) {
              entity = String.fromCodePoint(parseInt(str, 10));
            }
          }
        } else {
          entity = _xhtml.default[str];
        }

        break;
      }

      str += ch;
    }

    if (!entity) {
      this.state.pos = startPos;
      return "&";
    }

    return entity;
  }

  jsxReadWord() {
    let ch;
    const start = this.state.pos;

    do {
      ch = this.input.charCodeAt(++this.state.pos);
    } while ((0, _identifier.isIdentifierChar)(ch) || ch === 45);

    return this.finishToken(_types.types.jsxName, this.input.slice(start, this.state.pos));
  }

  jsxParseIdentifier() {
    const node = this.startNode();

    if (this.match(_types.types.jsxName)) {
      node.name = this.state.value;
    } else if (this.state.type.keyword) {
      node.name = this.state.type.keyword;
    } else {
      this.unexpected();
    }

    this.next();
    return this.finishNode(node, "JSXIdentifier");
  }

  jsxParseNamespacedName() {
    const startPos = this.state.start;
    const startLoc = this.state.startLoc;
    const name = this.jsxParseIdentifier();
    if (!this.eat(_types.types.colon)) return name;
    const node = this.startNodeAt(startPos, startLoc);
    node.namespace = name;
    node.name = this.jsxParseIdentifier();
    return this.finishNode(node, "JSXNamespacedName");
  }

  jsxParseElementName() {
    const startPos = this.state.start;
    const startLoc = this.state.startLoc;
    let node = this.jsxParseNamespacedName();

    if (node.type === "JSXNamespacedName") {
      return node;
    }

    while (this.eat(_types.types.dot)) {
      const newNode = this.startNodeAt(startPos, startLoc);
      newNode.object = node;
      newNode.property = this.jsxParseIdentifier();
      node = this.finishNode(newNode, "JSXMemberExpression");
    }

    return node;
  }

  jsxParseAttributeValue() {
    let node;

    switch (this.state.type) {
      case _types.types.braceL:
        node = this.startNode();
        this.next();
        node = this.jsxParseExpressionContainer(node);

        if (node.expression.type === "JSXEmptyExpression") {
          this.raise(node.start, JsxErrors.AttributeIsEmpty);
        }

        return node;

      case _types.types.jsxTagStart:
      case _types.types.string:
        return this.parseExprAtom();

      default:
        throw this.raise(this.state.start, JsxErrors.UnsupportedJsxValue);
    }
  }

  jsxParseEmptyExpression() {
    const node = this.startNodeAt(this.state.lastTokEnd, this.state.lastTokEndLoc);
    return this.finishNodeAt(node, "JSXEmptyExpression", this.state.start, this.state.startLoc);
  }

  jsxParseSpreadChild(node) {
    this.next();
    node.expression = this.parseExpression();
    this.expect(_types.types.braceR);
    return this.finishNode(node, "JSXSpreadChild");
  }

  jsxParseExpressionContainer(node) {
    if (this.match(_types.types.braceR)) {
      node.expression = this.jsxParseEmptyExpression();
    } else {
      node.expression = this.parseExpression();
    }

    this.expect(_types.types.braceR);
    return this.finishNode(node, "JSXExpressionContainer");
  }

  jsxParseAttribute() {
    const node = this.startNode();

    if (this.eat(_types.types.braceL)) {
      this.expect(_types.types.ellipsis);
      node.argument = this.parseMaybeAssignAllowIn();
      this.expect(_types.types.braceR);
      return this.finishNode(node, "JSXSpreadAttribute");
    }

    node.name = this.jsxParseNamespacedName();
    node.value = this.eat(_types.types.eq) ? this.jsxParseAttributeValue() : null;
    return this.finishNode(node, "JSXAttribute");
  }

  jsxParseOpeningElementAt(startPos, startLoc) {
    const node = this.startNodeAt(startPos, startLoc);

    if (this.match(_types.types.jsxTagEnd)) {
      this.expect(_types.types.jsxTagEnd);
      return this.finishNode(node, "JSXOpeningFragment");
    }

    node.name = this.jsxParseElementName();
    return this.jsxParseOpeningElementAfterName(node);
  }

  jsxParseOpeningElementAfterName(node) {
    const attributes = [];

    while (!this.match(_types.types.slash) && !this.match(_types.types.jsxTagEnd)) {
      attributes.push(this.jsxParseAttribute());
    }

    node.attributes = attributes;
    node.selfClosing = this.eat(_types.types.slash);
    this.expect(_types.types.jsxTagEnd);
    return this.finishNode(node, "JSXOpeningElement");
  }

  jsxParseClosingElementAt(startPos, startLoc) {
    const node = this.startNodeAt(startPos, startLoc);

    if (this.match(_types.types.jsxTagEnd)) {
      this.expect(_types.types.jsxTagEnd);
      return this.finishNode(node, "JSXClosingFragment");
    }

    node.name = this.jsxParseElementName();
    this.expect(_types.types.jsxTagEnd);
    return this.finishNode(node, "JSXClosingElement");
  }

  jsxParseElementAt(startPos, startLoc) {
    const node = this.startNodeAt(startPos, startLoc);
    const children = [];
    const openingElement = this.jsxParseOpeningElementAt(startPos, startLoc);
    let closingElement = null;

    if (!openingElement.selfClosing) {
      contents: for (;;) {
        switch (this.state.type) {
          case _types.types.jsxTagStart:
            startPos = this.state.start;
            startLoc = this.state.startLoc;
            this.next();

            if (this.eat(_types.types.slash)) {
              closingElement = this.jsxParseClosingElementAt(startPos, startLoc);
              break contents;
            }

            children.push(this.jsxParseElementAt(startPos, startLoc));
            break;

          case _types.types.jsxText:
            children.push(this.parseExprAtom());
            break;

          case _types.types.braceL:
            {
              const node = this.startNode();
              this.next();

              if (this.match(_types.types.ellipsis)) {
                children.push(this.jsxParseSpreadChild(node));
              } else {
                children.push(this.jsxParseExpressionContainer(node));
              }

              break;
            }

          default:
            throw this.unexpected();
        }
      }

      if (isFragment(openingElement) && !isFragment(closingElement)) {
        this.raise(closingElement.start, JsxErrors.MissingClosingTagFragment);
      } else if (!isFragment(openingElement) && isFragment(closingElement)) {
        this.raise(closingElement.start, JsxErrors.MissingClosingTagElement, getQualifiedJSXName(openingElement.name));
      } else if (!isFragment(openingElement) && !isFragment(closingElement)) {
        if (getQualifiedJSXName(closingElement.name) !== getQualifiedJSXName(openingElement.name)) {
          this.raise(closingElement.start, JsxErrors.MissingClosingTagElement, getQualifiedJSXName(openingElement.name));
        }
      }
    }

    if (isFragment(openingElement)) {
      node.openingFragment = openingElement;
      node.closingFragment = closingElement;
    } else {
      node.openingElement = openingElement;
      node.closingElement = closingElement;
    }

    node.children = children;

    if (this.isRelational("<")) {
      throw this.raise(this.state.start, JsxErrors.UnwrappedAdjacentJSXElements);
    }

    return isFragment(openingElement) ? this.finishNode(node, "JSXFragment") : this.finishNode(node, "JSXElement");
  }

  jsxParseElement() {
    const startPos = this.state.start;
    const startLoc = this.state.startLoc;
    this.next();
    return this.jsxParseElementAt(startPos, startLoc);
  }

  parseExprAtom(refExpressionErrors) {
    if (this.match(_types.types.jsxText)) {
      return this.parseLiteral(this.state.value, "JSXText");
    } else if (this.match(_types.types.jsxTagStart)) {
      return this.jsxParseElement();
    } else if (this.isRelational("<") && this.input.charCodeAt(this.state.pos) !== 33) {
      this.finishToken(_types.types.jsxTagStart);
      return this.jsxParseElement();
    } else {
      return super.parseExprAtom(refExpressionErrors);
    }
  }

  getTokenFromCode(code) {
    if (this.state.inPropertyName) return super.getTokenFromCode(code);
    const context = this.curContext();

    if (context === _context.types.j_expr) {
      return this.jsxReadToken();
    }

    if (context === _context.types.j_oTag || context === _context.types.j_cTag) {
      if ((0, _identifier.isIdentifierStart)(code)) {
        return this.jsxReadWord();
      }

      if (code === 62) {
        ++this.state.pos;
        return this.finishToken(_types.types.jsxTagEnd);
      }

      if ((code === 34 || code === 39) && context === _context.types.j_oTag) {
        return this.jsxReadString(code);
      }
    }

    if (code === 60 && this.state.exprAllowed && this.input.charCodeAt(this.state.pos + 1) !== 33) {
      ++this.state.pos;
      return this.finishToken(_types.types.jsxTagStart);
    }

    return super.getTokenFromCode(code);
  }

  updateContext(prevType) {
    if (this.match(_types.types.braceL)) {
      const curContext = this.curContext();

      if (curContext === _context.types.j_oTag) {
        this.state.context.push(_context.types.braceExpression);
      } else if (curContext === _context.types.j_expr) {
        this.state.context.push(_context.types.templateQuasi);
      } else {
        super.updateContext(prevType);
      }

      this.state.exprAllowed = true;
    } else if (this.match(_types.types.slash) && prevType === _types.types.jsxTagStart) {
      this.state.context.length -= 2;
      this.state.context.push(_context.types.j_cTag);
      this.state.exprAllowed = false;
    } else {
      return super.updateContext(prevType);
    }
  }

};

exports.default = _default;