expand-value/dist/parse.mjs

Get deeply nested values from an object, like dot-prop and get-value, but with support for advanced features like bracket-notation and more.

var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });

// src/nodes/Location.ts
var Position = class {
  static {
    __name(this, "Position");
  }
  index;
  line;
  col;
  constructor(loc) {
    this.index = loc.index;
    this.line = loc.line;
    this.col = loc.col;
  }
};
var Location = class {
  static {
    __name(this, "Location");
  }
  start;
  end;
  constructor(start, end) {
    this.start = start;
    this.end = end;
  }
  slice(input) {
    return input.slice(...this.range);
  }
  get range() {
    return [this.start.index, this.end.index];
  }
  get lines() {
    return [this.start.line, this.end.line];
  }
};
var location = /* @__PURE__ */ __name((loc) => {
  const start = new Position(loc);
  return (node) => {
    node.loc = new Location(start, new Position(loc));
    return node;
  };
}, "location");
location.Position = Position;
location.Location = Location;
location.location = location;

// src/utils.ts
import isNumber from "is-number";
import { Segmenter } from "intl-segmenter";
var { defineProperty } = Reflect;
var isObject = /* @__PURE__ */ __name((val) => val && typeof val === "object" && !Array.isArray(val), "isObject");
var define = /* @__PURE__ */ __name((node, key, value) => {
  defineProperty(node, key, {
    configurable: true,
    enumerable: false,
    writable: true,
    value
  });
}, "define");

// src/nodes/Node.ts
var Node = class {
  static {
    __name(this, "Node");
  }
  type;
  value;
  output;
  symbol;
  parent;
  constructor(node) {
    this.type = node.type;
    this.value = node.value || "";
    if (node.output != null && node.output !== "") {
      this.output = node.output;
    }
    if (node.symbol) {
      this.symbol = node.symbol;
    }
    define(this, "alt", node.alt);
    define(this, "match", node.match);
    define(this, "loc", node.loc);
  }
  get siblings() {
    return this.parent?.nodes || [];
  }
};

// src/nodes/Block.ts
var Block = class extends Node {
  static {
    __name(this, "Block");
  }
  nodes;
  constructor(node) {
    super(node);
    this.nodes = node.nodes || [];
  }
  append(input) {
    this.parent && this.parent.append(input);
    this.output = this.output || "";
    this.output += input;
  }
  push(node) {
    define(node, "parent", this);
    this.nodes.push(node);
  }
};

// src/nodes/Token.ts
var { defineProperty: defineProperty2 } = Reflect;
var Token = class {
  static {
    __name(this, "Token");
  }
  type;
  value;
  loc;
  match;
  constructor(token) {
    this.type = token.type;
    this.value = token.value;
    defineProperty2(this, "loc", { value: token.loc, writable: true });
    defineProperty2(this, "match", { value: token.match });
  }
};

// src/parse.ts
var QUOTED_STRING = /^(['"`])((?:\\.|(?!\1)[\s\S])*?)(\1)/;
var IDENT_DOT = /^([a-zA-Z_][-a-zA-Z0-9_.]*(?<!\.))/;
var IDENT = /^([a-zA-Z_$][a-zA-Z0-9_$-]*(?<!-))/;
var NUMBER = /^(-?[0-9]+(?:\.[0-9]+)?|-?Infinity|NaN)/;
var RANGE = /^\.\.(?=[0-9a-z])/i;
var SYMBOL = /^Symbol\((.*?)\)/;
var parse = /* @__PURE__ */ __name((input = "", options = {}) => {
  if (!isObject(options)) options = {};
  const loc = { index: 0, line: 1, col: 0, row: 1 };
  let pos = location(loc);
  const str = String(input);
  const ast = new Block({ type: "root" });
  ast.output = "";
  const stack = [ast];
  const stash = [];
  const tokens = [];
  let remaining = str;
  let block = ast;
  let token;
  let match;
  let prev;
  let separator = /^\./;
  let IDENTITY = IDENT;
  if (typeof options.separator === "string") {
    separator = new RegExp(`^\\${options.separator.replace(/^[\\^]+/, "")}`);
    IDENTITY = IDENT_DOT;
  }
  const eos = /* @__PURE__ */ __name(() => remaining === void 0 || remaining === "", "eos");
  const scan = /* @__PURE__ */ __name((regex, type = "text") => {
    if (match = regex.exec(remaining)) {
      consume(match[0]);
      return new Token({ type, value: match[0], match });
    }
  }, "scan");
  const updateLocation = /* @__PURE__ */ __name((value, len) => {
    const i = value.lastIndexOf("\n");
    loc.index += len;
    loc.col = ~i ? len - i : loc.col + len;
    loc.row += Math.max(0, value.split("\n").length - 1);
  }, "updateLocation");
  const consume = /* @__PURE__ */ __name((value, len = value.length) => {
    updateLocation(value, len);
    remaining = remaining.slice(len);
    return value;
  }, "consume");
  const drop = /* @__PURE__ */ __name(() => {
    if (stash.length) {
      block.push(stash.shift());
    }
  }, "drop");
  const shouldPush = /* @__PURE__ */ __name((node) => {
    return node.type !== "newline" || options.newlines !== false;
  }, "shouldPush");
  const push = /* @__PURE__ */ __name((node) => {
    pos(node);
    if (prev?.type === "ident" && node.type === "ident") {
      block.append(node.output || node.match[0]);
      prev.value += node.value;
      return;
    }
    if (!shouldPush(node)) return;
    block.push(node);
    if (node.nodes) {
      stack.push(node);
      block = node;
    } else {
      block.append(node.output || node.match[0]);
      tokens.push(node);
    }
    pos = location(loc);
    prev = node;
    if (block.type === "root") {
      drop();
    }
  }, "push");
  const pop = /* @__PURE__ */ __name(() => {
    const parent = stack.pop();
    block = stack[stack.length - 1];
    return parent;
  }, "pop");
  const advance = /* @__PURE__ */ __name(() => {
    if (token = scan(/^\\+/, "escaped")) {
      if (token.value.length % 2 === 1) {
        token.value += consume(remaining[0]);
      }
      if (token.value === "\\.") {
        token.type = "ident";
        token.value = ".";
        token.output = "\\.";
      }
      push(new Node(token));
      return;
    }
    if (token = scan(SYMBOL, "symbol")) {
      token.value = token.match[1];
      token.symbol = Symbol.for(token.value);
      push(new Node(token));
      return;
    }
    if (token = scan(/^\[/, "left_bracket")) {
      token.index = tokens.length;
      push(new Block({ type: "bracket" }));
      push(new Node(token));
      return;
    }
    if (token = scan(/^\]/, "right_bracket")) {
      push(new Node(token));
      if (block.type === "bracket") {
        pop();
      }
      return;
    }
    if (token = scan(/^\(/, "left_paren")) {
      token.index = tokens.length;
      push(new Block({ type: "paren" }));
      push(new Node(token));
      return;
    }
    if (token = scan(/^\)/, "right_paren")) {
      push(new Node(token));
      if (block.type === "paren") {
        pop();
      }
      return;
    }
    if (block.type === "bracket" && (token = scan(RANGE, "range"))) {
      push(new Node(token));
      return;
    }
    if (!options.separator && (token = scan(separator, "separator"))) {
      push(new Node(token));
      return;
    }
    if (token = scan(/^[0-9]+/, "integer")) {
      push(new Node(token));
      return;
    }
    if (token = scan(IDENTITY, "ident")) {
      push(new Node(token));
      return;
    }
    if (options.separator && options.separator !== ".") {
      if (token = scan(separator, "separator")) {
        push(new Node(token));
        return;
      }
    }
    if (token = scan(QUOTED_STRING, "quoted")) {
      push(new Node(token));
      return;
    }
    if (token = scan(NUMBER, "number")) {
      if (token.value === "-0") {
        token.alt = "0";
      }
      push(new Node(token));
      return;
    }
    push(new Node(scan(/^(.)/, "text")));
  }, "advance");
  while (!eos()) advance();
  return { ast, tokens, output: ast.output };
}, "parse");
export {
  parse
};
//# sourceMappingURL=parse.mjs.map