@rsql/emitter/dist/index.esm.js

RSQL Emitter

import {
  isComparisonNode,
  isLogicNode,
  ReservedChars,
  isLogicOperator,
  AND,
  OR,
  AND_VERBOSE,
  OR_VERBOSE,
} from "@rsql/ast";

var DEFAULT_EMIT_OPTIONS = {
  preferredQuote: '"',
  optimizeQuotes: true,
};
var NEEDS_ESCAPING = {
  '"': /"|\\/g,
  "'": /'|\\/g,
};
function escapeQuotes(value, quote) {
  return value.replace(NEEDS_ESCAPING[quote], "\\$&");
}
function countQuote(value, quote) {
  var count = 0;
  for (var i = 0; i < value.length; ++i) {
    if (value[i] === quote) {
      count++;
    }
  }
  return count;
}
function selectQuote(value, _a) {
  var _b = _a.preferredQuote,
    preferredQuote = _b === void 0 ? DEFAULT_EMIT_OPTIONS.preferredQuote : _b,
    _c = _a.optimizeQuotes,
    optimizeQuotes = _c === void 0 ? DEFAULT_EMIT_OPTIONS.optimizeQuotes : _c;
  if (optimizeQuotes) {
    var otherQuote = preferredQuote === '"' ? "'" : '"';
    return countQuote(value, otherQuote) < countQuote(value, preferredQuote) ? otherQuote : preferredQuote;
  } else {
    return preferredQuote;
  }
}
function escapeValue(value, options) {
  if (
    value === "" ||
    ReservedChars.some(function (reservedChar) {
      return value.includes(reservedChar);
    })
  ) {
    var quote = selectQuote(value, options);
    return "" + quote + escapeQuotes(value, quote) + quote;
  }
  return value;
}
function emitSelector(node) {
  return node.selector;
}
function emitValue(node, options) {
  return Array.isArray(node.value)
    ? "(" +
        node.value
          .map(function (value) {
            return escapeValue(value, options);
          })
          .join(",") +
        ")"
    : escapeValue(node.value, options);
}
function emitComparison(node, options) {
  return "" + emitSelector(node.left) + node.operator + emitValue(node.right, options);
}
function emitLogic(node, options) {
  var left = emitWithoutOptionsValidation(node.left, options);
  var right = emitWithoutOptionsValidation(node.right, options);
  // handle operator precedence - as it's only the case for AND operator, we don't need a generic logic for that
  if (isLogicOperator(node.operator, AND)) {
    if (isLogicNode(node.left, OR)) {
      left = "(" + left + ")";
    }
    if (isLogicNode(node.right, OR)) {
      right = "(" + right + ")";
    }
  }
  // for verbose operator add space before and after operator
  var operator =
    node.operator === AND_VERBOSE || node.operator === OR_VERBOSE ? " " + node.operator + " " : node.operator;
  return "" + left + operator + right;
}
function emitWithoutOptionsValidation(expression, options) {
  if (isComparisonNode(expression)) {
    return emitComparison(expression, options);
  } else if (isLogicNode(expression)) {
    return emitLogic(expression, options);
  }
  throw new TypeError('The "expression" has to be a valid "ExpressionNode", ' + String(expression) + " passed.");
}
function emit(expression, options) {
  if (options === void 0) {
    options = {};
  }
  if (options.preferredQuote !== undefined && options.preferredQuote !== '"' && options.preferredQuote !== "'") {
    throw new TypeError(
      'Invalid "preferredQuote" option: ' +
        options.preferredQuote +
        ". Must be either \" (the ASCII double quote character) or ' (the ASCII single quote character)."
    );
  }
  return emitWithoutOptionsValidation(expression, options);
}

export { emit };