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sql-formatter.js
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(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory();
else if(typeof define === 'function' && define.amd)
define([], factory);
else if(typeof exports === 'object')
exports["sqlFormatter"] = factory();
else
root["sqlFormatter"] = factory();
})(window, function() {
return /******/ (function(modules) { // webpackBootstrap
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/******/
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/******/ // mode & 1: value is a module id, require it
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/***/ "./src/core/Formatter.js":
/*!*******************************!*\
!*** ./src/core/Formatter.js ***!
\*******************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "default", function() { return Formatter; });
/* harmony import */ var _tokenTypes__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./tokenTypes */ "./src/core/tokenTypes.js");
/* harmony import */ var _Indentation__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./Indentation */ "./src/core/Indentation.js");
/* harmony import */ var _InlineBlock__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./InlineBlock */ "./src/core/InlineBlock.js");
/* harmony import */ var _Params__WEBPACK_IMPORTED_MODULE_3__ = __webpack_require__(/*! ./Params */ "./src/core/Params.js");
/* harmony import */ var _utils__WEBPACK_IMPORTED_MODULE_4__ = __webpack_require__(/*! ../utils */ "./src/utils.js");
/* harmony import */ var _token__WEBPACK_IMPORTED_MODULE_5__ = __webpack_require__(/*! ./token */ "./src/core/token.js");
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var Formatter = /*#__PURE__*/function () {
/**
* @param {Object} cfg
* @param {String} cfg.language
* @param {String} cfg.indent
* @param {Boolean} cfg.uppercase
* @param {Integer} cfg.linesBetweenQueries
* @param {Object} cfg.params
*/
function Formatter(cfg) {
_classCallCheck(this, Formatter);
this.cfg = cfg;
this.indentation = new _Indentation__WEBPACK_IMPORTED_MODULE_1__["default"](this.cfg.indent);
this.inlineBlock = new _InlineBlock__WEBPACK_IMPORTED_MODULE_2__["default"]();
this.params = new _Params__WEBPACK_IMPORTED_MODULE_3__["default"](this.cfg.params);
this.previousReservedToken = {};
this.tokens = [];
this.index = 0;
}
/**
* SQL Tokenizer for this formatter, provided by subclasses.
*/
_createClass(Formatter, [{
key: "tokenizer",
value: function tokenizer() {
throw new Error('tokenizer() not implemented by subclass');
}
/**
* Reprocess and modify a token based on parsed context.
*
* @param {Object} token The token to modify
* @param {String} token.type
* @param {String} token.value
* @return {Object} new token or the original
* @return {String} token.type
* @return {String} token.value
*/
}, {
key: "tokenOverride",
value: function tokenOverride(token) {
// subclasses can override this to modify tokens during formatting
return token;
}
/**
* Formats whitespace in a SQL string to make it easier to read.
*
* @param {String} query The SQL query string
* @return {String} formatted query
*/
}, {
key: "format",
value: function format(query) {
this.tokens = this.tokenizer().tokenize(query);
var formattedQuery = this.getFormattedQueryFromTokens();
return formattedQuery.trim();
}
}, {
key: "getFormattedQueryFromTokens",
value: function getFormattedQueryFromTokens() {
var _this = this;
var formattedQuery = '';
this.tokens.forEach(function (token, index) {
_this.index = index;
token = _this.tokenOverride(token);
if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].LINE_COMMENT) {
formattedQuery = _this.formatLineComment(token, formattedQuery);
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].BLOCK_COMMENT) {
formattedQuery = _this.formatBlockComment(token, formattedQuery);
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_TOP_LEVEL) {
formattedQuery = _this.formatTopLevelReservedWord(token, formattedQuery);
_this.previousReservedToken = token;
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_TOP_LEVEL_NO_INDENT) {
formattedQuery = _this.formatTopLevelReservedWordNoIndent(token, formattedQuery);
_this.previousReservedToken = token;
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_NEWLINE) {
formattedQuery = _this.formatNewlineReservedWord(token, formattedQuery);
_this.previousReservedToken = token;
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED) {
formattedQuery = _this.formatWithSpaces(token, formattedQuery);
_this.previousReservedToken = token;
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].OPEN_PAREN) {
formattedQuery = _this.formatOpeningParentheses(token, formattedQuery);
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].CLOSE_PAREN) {
formattedQuery = _this.formatClosingParentheses(token, formattedQuery);
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].PLACEHOLDER) {
formattedQuery = _this.formatPlaceholder(token, formattedQuery);
} else if (token.value === ',') {
formattedQuery = _this.formatComma(token, formattedQuery);
} else if (token.value === ':') {
formattedQuery = _this.formatWithSpaceAfter(token, formattedQuery);
} else if (token.value === '.') {
formattedQuery = _this.formatWithoutSpaces(token, formattedQuery);
} else if (token.value === ';') {
formattedQuery = _this.formatQuerySeparator(token, formattedQuery);
} else {
formattedQuery = _this.formatWithSpaces(token, formattedQuery);
}
});
return formattedQuery;
}
}, {
key: "formatLineComment",
value: function formatLineComment(token, query) {
return this.addNewline(query + this.show(token));
}
}, {
key: "formatBlockComment",
value: function formatBlockComment(token, query) {
return this.addNewline(this.addNewline(query) + this.indentComment(token.value));
}
}, {
key: "indentComment",
value: function indentComment(comment) {
return comment.replace(/\n[\t ]*/g, '\n' + this.indentation.getIndent() + ' ');
}
}, {
key: "formatTopLevelReservedWordNoIndent",
value: function formatTopLevelReservedWordNoIndent(token, query) {
this.indentation.decreaseTopLevel();
query = this.addNewline(query) + this.equalizeWhitespace(this.show(token));
return this.addNewline(query);
}
}, {
key: "formatTopLevelReservedWord",
value: function formatTopLevelReservedWord(token, query) {
this.indentation.decreaseTopLevel();
query = this.addNewline(query);
this.indentation.increaseTopLevel();
query += this.equalizeWhitespace(this.show(token));
return this.addNewline(query);
}
}, {
key: "formatNewlineReservedWord",
value: function formatNewlineReservedWord(token, query) {
if (Object(_token__WEBPACK_IMPORTED_MODULE_5__["isAnd"])(token) && Object(_token__WEBPACK_IMPORTED_MODULE_5__["isBetween"])(this.tokenLookBehind(2))) {
return this.formatWithSpaces(token, query);
}
return this.addNewline(query) + this.equalizeWhitespace(this.show(token)) + ' ';
} // Replace any sequence of whitespace characters with single space
}, {
key: "equalizeWhitespace",
value: function equalizeWhitespace(string) {
return string.replace(/[\t-\r \xA0\u1680\u2000-\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF]+/g, ' ');
} // Opening parentheses increase the block indent level and start a new line
}, {
key: "formatOpeningParentheses",
value: function formatOpeningParentheses(token, query) {
var _preserveWhitespaceFo, _this$tokenLookBehind;
// Take out the preceding space unless there was whitespace there in the original query
// or another opening parens or line comment
var preserveWhitespaceFor = (_preserveWhitespaceFo = {}, _defineProperty(_preserveWhitespaceFo, _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].OPEN_PAREN, true), _defineProperty(_preserveWhitespaceFo, _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].LINE_COMMENT, true), _defineProperty(_preserveWhitespaceFo, _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].OPERATOR, true), _preserveWhitespaceFo);
if (token.whitespaceBefore.length === 0 && !preserveWhitespaceFor[(_this$tokenLookBehind = this.tokenLookBehind()) === null || _this$tokenLookBehind === void 0 ? void 0 : _this$tokenLookBehind.type]) {
query = Object(_utils__WEBPACK_IMPORTED_MODULE_4__["trimSpacesEnd"])(query);
}
query += this.show(token);
this.inlineBlock.beginIfPossible(this.tokens, this.index);
if (!this.inlineBlock.isActive()) {
this.indentation.increaseBlockLevel();
query = this.addNewline(query);
}
return query;
} // Closing parentheses decrease the block indent level
}, {
key: "formatClosingParentheses",
value: function formatClosingParentheses(token, query) {
if (this.inlineBlock.isActive()) {
this.inlineBlock.end();
return this.formatWithSpaceAfter(token, query);
} else {
this.indentation.decreaseBlockLevel();
return this.formatWithSpaces(token, this.addNewline(query));
}
}
}, {
key: "formatPlaceholder",
value: function formatPlaceholder(token, query) {
return query + this.params.get(token) + ' ';
} // Commas start a new line (unless within inline parentheses or SQL "LIMIT" clause)
}, {
key: "formatComma",
value: function formatComma(token, query) {
query = Object(_utils__WEBPACK_IMPORTED_MODULE_4__["trimSpacesEnd"])(query) + this.show(token) + ' ';
if (this.inlineBlock.isActive()) {
return query;
} else if (Object(_token__WEBPACK_IMPORTED_MODULE_5__["isLimit"])(this.previousReservedToken)) {
return query;
} else {
return this.addNewline(query);
}
}
}, {
key: "formatWithSpaceAfter",
value: function formatWithSpaceAfter(token, query) {
return Object(_utils__WEBPACK_IMPORTED_MODULE_4__["trimSpacesEnd"])(query) + this.show(token) + ' ';
}
}, {
key: "formatWithoutSpaces",
value: function formatWithoutSpaces(token, query) {
return Object(_utils__WEBPACK_IMPORTED_MODULE_4__["trimSpacesEnd"])(query) + this.show(token);
}
}, {
key: "formatWithSpaces",
value: function formatWithSpaces(token, query) {
return query + this.show(token) + ' ';
}
}, {
key: "formatQuerySeparator",
value: function formatQuerySeparator(token, query) {
this.indentation.resetIndentation();
return Object(_utils__WEBPACK_IMPORTED_MODULE_4__["trimSpacesEnd"])(query) + this.show(token) + '\n'.repeat(this.cfg.linesBetweenQueries || 1);
} // Converts token to string (uppercasing it if needed)
}, {
key: "show",
value: function show(_ref) {
var type = _ref.type,
value = _ref.value;
if (this.cfg.uppercase && (type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_TOP_LEVEL || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_TOP_LEVEL_NO_INDENT || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_NEWLINE || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].OPEN_PAREN || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].CLOSE_PAREN)) {
return value.toUpperCase();
} else {
return value;
}
}
}, {
key: "addNewline",
value: function addNewline(query) {
query = Object(_utils__WEBPACK_IMPORTED_MODULE_4__["trimSpacesEnd"])(query);
if (!query.endsWith('\n')) {
query += '\n';
}
return query + this.indentation.getIndent();
}
}, {
key: "tokenLookBehind",
value: function tokenLookBehind() {
var n = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 1;
return this.tokens[this.index - n];
}
}, {
key: "tokenLookAhead",
value: function tokenLookAhead() {
var n = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 1;
return this.tokens[this.index + n];
}
}]);
return Formatter;
}();
/***/ }),
/***/ "./src/core/Indentation.js":
/*!*********************************!*\
!*** ./src/core/Indentation.js ***!
\*********************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "default", function() { return Indentation; });
/* harmony import */ var _utils__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ../utils */ "./src/utils.js");
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var INDENT_TYPE_TOP_LEVEL = 'top-level';
var INDENT_TYPE_BLOCK_LEVEL = 'block-level';
/**
* Manages indentation levels.
*
* There are two types of indentation levels:
*
* - BLOCK_LEVEL : increased by open-parenthesis
* - TOP_LEVEL : increased by RESERVED_TOP_LEVEL words
*/
var Indentation = /*#__PURE__*/function () {
/**
* @param {String} indent Indent value, default is " " (2 spaces)
*/
function Indentation(indent) {
_classCallCheck(this, Indentation);
this.indent = indent || ' ';
this.indentTypes = [];
}
/**
* Returns current indentation string.
* @return {String}
*/
_createClass(Indentation, [{
key: "getIndent",
value: function getIndent() {
return this.indent.repeat(this.indentTypes.length);
}
/**
* Increases indentation by one top-level indent.
*/
}, {
key: "increaseTopLevel",
value: function increaseTopLevel() {
this.indentTypes.push(INDENT_TYPE_TOP_LEVEL);
}
/**
* Increases indentation by one block-level indent.
*/
}, {
key: "increaseBlockLevel",
value: function increaseBlockLevel() {
this.indentTypes.push(INDENT_TYPE_BLOCK_LEVEL);
}
/**
* Decreases indentation by one top-level indent.
* Does nothing when the previous indent is not top-level.
*/
}, {
key: "decreaseTopLevel",
value: function decreaseTopLevel() {
if (this.indentTypes.length > 0 && Object(_utils__WEBPACK_IMPORTED_MODULE_0__["last"])(this.indentTypes) === INDENT_TYPE_TOP_LEVEL) {
this.indentTypes.pop();
}
}
/**
* Decreases indentation by one block-level indent.
* If there are top-level indents within the block-level indent,
* throws away these as well.
*/
}, {
key: "decreaseBlockLevel",
value: function decreaseBlockLevel() {
while (this.indentTypes.length > 0) {
var type = this.indentTypes.pop();
if (type !== INDENT_TYPE_TOP_LEVEL) {
break;
}
}
}
}, {
key: "resetIndentation",
value: function resetIndentation() {
this.indentTypes = [];
}
}]);
return Indentation;
}();
/***/ }),
/***/ "./src/core/InlineBlock.js":
/*!*********************************!*\
!*** ./src/core/InlineBlock.js ***!
\*********************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "default", function() { return InlineBlock; });
/* harmony import */ var _tokenTypes__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./tokenTypes */ "./src/core/tokenTypes.js");
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var INLINE_MAX_LENGTH = 50;
/**
* Bookkeeper for inline blocks.
*
* Inline blocks are parenthized expressions that are shorter than INLINE_MAX_LENGTH.
* These blocks are formatted on a single line, unlike longer parenthized
* expressions where open-parenthesis causes newline and increase of indentation.
*/
var InlineBlock = /*#__PURE__*/function () {
function InlineBlock() {
_classCallCheck(this, InlineBlock);
this.level = 0;
}
/**
* Begins inline block when lookahead through upcoming tokens determines
* that the block would be smaller than INLINE_MAX_LENGTH.
* @param {Object[]} tokens Array of all tokens
* @param {Number} index Current token position
*/
_createClass(InlineBlock, [{
key: "beginIfPossible",
value: function beginIfPossible(tokens, index) {
if (this.level === 0 && this.isInlineBlock(tokens, index)) {
this.level = 1;
} else if (this.level > 0) {
this.level++;
} else {
this.level = 0;
}
}
/**
* Finishes current inline block.
* There might be several nested ones.
*/
}, {
key: "end",
value: function end() {
this.level--;
}
/**
* True when inside an inline block
* @return {Boolean}
*/
}, {
key: "isActive",
value: function isActive() {
return this.level > 0;
} // Check if this should be an inline parentheses block
// Examples are "NOW()", "COUNT(*)", "int(10)", key(`somecolumn`), DECIMAL(7,2)
}, {
key: "isInlineBlock",
value: function isInlineBlock(tokens, index) {
var length = 0;
var level = 0;
for (var i = index; i < tokens.length; i++) {
var token = tokens[i];
length += token.value.length; // Overran max length
if (length > INLINE_MAX_LENGTH) {
return false;
}
if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].OPEN_PAREN) {
level++;
} else if (token.type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].CLOSE_PAREN) {
level--;
if (level === 0) {
return true;
}
}
if (this.isForbiddenToken(token)) {
return false;
}
}
return false;
} // Reserved words that cause newlines, comments and semicolons
// are not allowed inside inline parentheses block
}, {
key: "isForbiddenToken",
value: function isForbiddenToken(_ref) {
var type = _ref.type,
value = _ref.value;
return type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_TOP_LEVEL || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_NEWLINE || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].COMMENT || type === _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].BLOCK_COMMENT || value === ';';
}
}]);
return InlineBlock;
}();
/***/ }),
/***/ "./src/core/Params.js":
/*!****************************!*\
!*** ./src/core/Params.js ***!
\****************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "default", function() { return Params; });
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
/**
* Handles placeholder replacement with given params.
*/
var Params = /*#__PURE__*/function () {
/**
* @param {Object} params
*/
function Params(params) {
_classCallCheck(this, Params);
this.params = params;
this.index = 0;
}
/**
* Returns param value that matches given placeholder with param key.
* @param {Object} token
* @param {String} token.key Placeholder key
* @param {String} token.value Placeholder value
* @return {String} param or token.value when params are missing
*/
_createClass(Params, [{
key: "get",
value: function get(_ref) {
var key = _ref.key,
value = _ref.value;
if (!this.params) {
return value;
}
if (key) {
return this.params[key];
}
return this.params[this.index++];
}
}]);
return Params;
}();
/***/ }),
/***/ "./src/core/Tokenizer.js":
/*!*******************************!*\
!*** ./src/core/Tokenizer.js ***!
\*******************************/
/*! exports provided: default */
/***/ (function(module, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "default", function() { return Tokenizer; });
/* harmony import */ var _tokenTypes__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./tokenTypes */ "./src/core/tokenTypes.js");
/* harmony import */ var _regexFactory__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./regexFactory */ "./src/core/regexFactory.js");
/* harmony import */ var _utils__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ../utils */ "./src/utils.js");
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }
function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var Tokenizer = /*#__PURE__*/function () {
/**
* @param {Object} cfg
* @param {String[]} cfg.reservedWords Reserved words in SQL
* @param {String[]} cfg.reservedTopLevelWords Words that are set to new line separately
* @param {String[]} cfg.reservedNewlineWords Words that are set to newline
* @param {String[]} cfg.reservedTopLevelWordsNoIndent Words that are top level but have no indentation
* @param {String[]} cfg.stringTypes String types to enable: "", '', ``, [], N''
* @param {String[]} cfg.openParens Opening parentheses to enable, like (, [
* @param {String[]} cfg.closeParens Closing parentheses to enable, like ), ]
* @param {String[]} cfg.indexedPlaceholderTypes Prefixes for indexed placeholders, like ?
* @param {String[]} cfg.namedPlaceholderTypes Prefixes for named placeholders, like @ and :
* @param {String[]} cfg.lineCommentTypes Line comments to enable, like # and --
* @param {String[]} cfg.specialWordChars Special chars that can be found inside of words, like @ and #
* @param {String[]} [cfg.operator] Additional operators to recognize
*/
function Tokenizer(cfg) {
_classCallCheck(this, Tokenizer);
this.WHITESPACE_REGEX = /^([\t-\r \xA0\u1680\u2000-\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF]+)/;
this.NUMBER_REGEX = /^((\x2D[\t-\r \xA0\u1680\u2000-\u200A\u2028\u2029\u202F\u205F\u3000\uFEFF]*)?[0-9]+(\.[0-9]+)?([Ee]\x2D?[0-9]+(\.[0-9]+)?)?|0x[0-9A-Fa-f]+|0b[01]+)\b/;
this.OPERATOR_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createOperatorRegex"](['<>', '<=', '>='].concat(_toConsumableArray(cfg.operators || [])));
this.BLOCK_COMMENT_REGEX = /^(\/\*(?:(?![])[\s\S])*?(?:\*\/|$))/;
this.LINE_COMMENT_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createLineCommentRegex"](cfg.lineCommentTypes);
this.RESERVED_TOP_LEVEL_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createReservedWordRegex"](cfg.reservedTopLevelWords);
this.RESERVED_TOP_LEVEL_NO_INDENT_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createReservedWordRegex"](cfg.reservedTopLevelWordsNoIndent);
this.RESERVED_NEWLINE_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createReservedWordRegex"](cfg.reservedNewlineWords);
this.RESERVED_PLAIN_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createReservedWordRegex"](cfg.reservedWords);
this.WORD_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createWordRegex"](cfg.specialWordChars);
this.STRING_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createStringRegex"](cfg.stringTypes);
this.OPEN_PAREN_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createParenRegex"](cfg.openParens);
this.CLOSE_PAREN_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createParenRegex"](cfg.closeParens);
this.INDEXED_PLACEHOLDER_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createPlaceholderRegex"](cfg.indexedPlaceholderTypes, '[0-9]*');
this.IDENT_NAMED_PLACEHOLDER_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createPlaceholderRegex"](cfg.namedPlaceholderTypes, '[a-zA-Z0-9._$]+');
this.STRING_NAMED_PLACEHOLDER_REGEX = _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createPlaceholderRegex"](cfg.namedPlaceholderTypes, _regexFactory__WEBPACK_IMPORTED_MODULE_1__["createStringPattern"](cfg.stringTypes));
}
/**
* Takes a SQL string and breaks it into tokens.
* Each token is an object with type and value.
*
* @param {String} input The SQL string
* @return {Object[]} tokens An array of tokens.
* @return {String} token.type
* @return {String} token.value
* @return {String} token.whitespaceBefore Preceding whitespace
*/
_createClass(Tokenizer, [{
key: "tokenize",
value: function tokenize(input) {
var tokens = [];
var token; // Keep processing the string until it is empty
while (input.length) {
// grab any preceding whitespace
var whitespaceBefore = this.getWhitespace(input);
input = input.substring(whitespaceBefore.length);
if (input.length) {
// Get the next token and the token type
token = this.getNextToken(input, token); // Advance the string
input = input.substring(token.value.length);
tokens.push(_objectSpread(_objectSpread({}, token), {}, {
whitespaceBefore: whitespaceBefore
}));
}
}
return tokens;
}
}, {
key: "getWhitespace",
value: function getWhitespace(input) {
var matches = input.match(this.WHITESPACE_REGEX);
return matches ? matches[1] : '';
}
}, {
key: "getNextToken",
value: function getNextToken(input, previousToken) {
return this.getCommentToken(input) || this.getStringToken(input) || this.getOpenParenToken(input) || this.getCloseParenToken(input) || this.getPlaceholderToken(input) || this.getNumberToken(input) || this.getReservedWordToken(input, previousToken) || this.getWordToken(input) || this.getOperatorToken(input);
}
}, {
key: "getCommentToken",
value: function getCommentToken(input) {
return this.getLineCommentToken(input) || this.getBlockCommentToken(input);
}
}, {
key: "getLineCommentToken",
value: function getLineCommentToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].LINE_COMMENT,
regex: this.LINE_COMMENT_REGEX
});
}
}, {
key: "getBlockCommentToken",
value: function getBlockCommentToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].BLOCK_COMMENT,
regex: this.BLOCK_COMMENT_REGEX
});
}
}, {
key: "getStringToken",
value: function getStringToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].STRING,
regex: this.STRING_REGEX
});
}
}, {
key: "getOpenParenToken",
value: function getOpenParenToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].OPEN_PAREN,
regex: this.OPEN_PAREN_REGEX
});
}
}, {
key: "getCloseParenToken",
value: function getCloseParenToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].CLOSE_PAREN,
regex: this.CLOSE_PAREN_REGEX
});
}
}, {
key: "getPlaceholderToken",
value: function getPlaceholderToken(input) {
return this.getIdentNamedPlaceholderToken(input) || this.getStringNamedPlaceholderToken(input) || this.getIndexedPlaceholderToken(input);
}
}, {
key: "getIdentNamedPlaceholderToken",
value: function getIdentNamedPlaceholderToken(input) {
return this.getPlaceholderTokenWithKey({
input: input,
regex: this.IDENT_NAMED_PLACEHOLDER_REGEX,
parseKey: function parseKey(v) {
return v.slice(1);
}
});
}
}, {
key: "getStringNamedPlaceholderToken",
value: function getStringNamedPlaceholderToken(input) {
var _this = this;
return this.getPlaceholderTokenWithKey({
input: input,
regex: this.STRING_NAMED_PLACEHOLDER_REGEX,
parseKey: function parseKey(v) {
return _this.getEscapedPlaceholderKey({
key: v.slice(2, -1),
quoteChar: v.slice(-1)
});
}
});
}
}, {
key: "getIndexedPlaceholderToken",
value: function getIndexedPlaceholderToken(input) {
return this.getPlaceholderTokenWithKey({
input: input,
regex: this.INDEXED_PLACEHOLDER_REGEX,
parseKey: function parseKey(v) {
return v.slice(1);
}
});
}
}, {
key: "getPlaceholderTokenWithKey",
value: function getPlaceholderTokenWithKey(_ref) {
var input = _ref.input,
regex = _ref.regex,
parseKey = _ref.parseKey;
var token = this.getTokenOnFirstMatch({
input: input,
regex: regex,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].PLACEHOLDER
});
if (token) {
token.key = parseKey(token.value);
}
return token;
}
}, {
key: "getEscapedPlaceholderKey",
value: function getEscapedPlaceholderKey(_ref2) {
var key = _ref2.key,
quoteChar = _ref2.quoteChar;
return key.replace(new RegExp(Object(_utils__WEBPACK_IMPORTED_MODULE_2__["escapeRegExp"])('\\' + quoteChar), 'gu'), quoteChar);
} // Decimal, binary, or hex numbers
}, {
key: "getNumberToken",
value: function getNumberToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].NUMBER,
regex: this.NUMBER_REGEX
});
} // Punctuation and symbols
}, {
key: "getOperatorToken",
value: function getOperatorToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].OPERATOR,
regex: this.OPERATOR_REGEX
});
}
}, {
key: "getReservedWordToken",
value: function getReservedWordToken(input, previousToken) {
// A reserved word cannot be preceded by a "."
// this makes it so in "mytable.from", "from" is not considered a reserved word
if (previousToken && previousToken.value && previousToken.value === '.') {
return undefined;
}
return this.getTopLevelReservedToken(input) || this.getNewlineReservedToken(input) || this.getTopLevelReservedTokenNoIndent(input) || this.getPlainReservedToken(input);
}
}, {
key: "getTopLevelReservedToken",
value: function getTopLevelReservedToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_TOP_LEVEL,
regex: this.RESERVED_TOP_LEVEL_REGEX
});
}
}, {
key: "getNewlineReservedToken",
value: function getNewlineReservedToken(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_NEWLINE,
regex: this.RESERVED_NEWLINE_REGEX
});
}
}, {
key: "getTopLevelReservedTokenNoIndent",
value: function getTopLevelReservedTokenNoIndent(input) {
return this.getTokenOnFirstMatch({
input: input,
type: _tokenTypes__WEBPACK_IMPORTED_MODULE_0__["default"].RESERVED_TOP_LEVEL_NO_INDENT,
regex: this.RESERVED_TOP_LEVEL_NO_INDENT_REGEX
});
}