Function injectReplacements

src/utils/sql.ts:16–238

(
  sqlString: string,
  dialect: AbstractDialect,
  replacements: BindOrReplacements
)

 * @returns The SQL with replacements rewritten in their dialect-specific syntax.
 */
export function injectReplacements(
  sqlString: string,
  dialect: AbstractDialect,
  replacements: BindOrReplacements
): string {
  if (replacements == null) {
    return sqlString;
  }

  if (!Array.isArray(replacements) && !isPlainObject(replacements)) {
    throw new TypeError(`"replacements" must be an array or a plain object, but received ${JSON.stringify(replacements)} instead.`);
  }

  const isNamedReplacements = isPlainObject(replacements);
  const isPositionalReplacements = Array.isArray(replacements);
  let lastConsumedPositionalReplacementIndex = -1;

  let output = '';

  let currentDollarStringTagName = null;
  let isString = false;
  let isColumn = false;
  let previousSliceEnd = 0;
  let isSingleLineComment = false;
  let isCommentBlock = false;
  let stringIsBackslashEscapable = false;

  for (let i = 0; i < sqlString.length; i++) {
    const char = sqlString[i];

    if (isColumn) {
      if (char === dialect.TICK_CHAR_RIGHT) {
        isColumn = false;
      }

      continue;
    }

    if (isString) {
      if (
        char === '\'' &&
        (!stringIsBackslashEscapable || !isBackslashEscaped(sqlString, i - 1))
      ) {
        isString = false;
        stringIsBackslashEscapable = false;
      }

      continue;
    }

    if (currentDollarStringTagName !== null) {
      if (char !== '$') {
        continue;
      }

      const remainingString = sqlString.slice(i, sqlString.length);

      const dollarStringStartMatch = remainingString.match(/^\$(?<name>[a-z_][0-9a-z_]*)?(\$)/i);