Function validateParameterStyle

src/utils/parameter-mapper.ts:57–82

(
  statement: string,
  connectorType: ConnectorType
)

 * @throws Error if parameter style doesn't match connector
 */
export function validateParameterStyle(
  statement: string,
  connectorType: ConnectorType
): void {
  const detectedStyle = detectParameterStyle(statement);
  const expectedStyle = PARAMETER_STYLES[connectorType];

  if (detectedStyle === "none") {
    // No parameters in statement - this is valid
    return;
  }

  if (detectedStyle !== expectedStyle) {
    const examples = {
      numbered: "$1, $2, $3",
      positional: "?, ?, ?",
      named: "@p1, @p2, @p3",
    };

    throw new Error(
      `Invalid parameter syntax for ${connectorType}. ` +
        `Expected ${expectedStyle} style (${examples[expectedStyle]}), ` +
        `but found ${detectedStyle} style in statement.`
    );
  }
}

/**
 * Count the number of parameters in a SQL statement and validate they are sequential.