Function icuCreateOpCodesToString

packages/core/src/render3/i18n/i18n_debug.ts:136–178

(
  this: IcuCreateOpCodes | void,
  opcodes?: IcuCreateOpCodes,
)

 * @param opcodes `I18nCreateOpCodes` if invoked as a function.
 */
export function icuCreateOpCodesToString(
  this: IcuCreateOpCodes | void,
  opcodes?: IcuCreateOpCodes,
): string[] {
  const parser = new OpCodeParser(opcodes || (Array.isArray(this) ? this : []));
  let lines: string[] = [];

  function consumeOpCode(opCode: number): string {
    const parent = getParentFromIcuCreateOpCode(opCode);
    const ref = getRefFromIcuCreateOpCode(opCode);
    switch (getInstructionFromIcuCreateOpCode(opCode)) {
      case IcuCreateOpCode.AppendChild:
        return `(lView[${parent}] as Element).appendChild(lView[${lastRef}])`;
      case IcuCreateOpCode.Attr:
        return `(lView[${ref}] as Element).setAttribute("${parser.consumeString()}", "${parser.consumeString()}")`;
    }
    throw new Error('Unexpected OpCode: ' + getInstructionFromIcuCreateOpCode(opCode));
  }

  let lastRef = -1;
  while (parser.hasMore()) {
    let value = parser.consumeNumberStringOrMarker();
    if (value === ICU_MARKER) {
      const text = parser.consumeString();
      lastRef = parser.consumeNumber();
      lines.push(`lView[${lastRef}] = document.createComment("${text}")`);
    } else if (value === ELEMENT_MARKER) {
      const text = parser.consumeString();
      lastRef = parser.consumeNumber();
      lines.push(`lView[${lastRef}] = document.createElement("${text}")`);
    } else if (typeof value === 'string') {
      lastRef = parser.consumeNumber();
      lines.push(`lView[${lastRef}] = document.createTextNode("${value}")`);
    } else if (typeof value === 'number') {
      const line = consumeOpCode(value);
      line && lines.push(line);
    } else {
      throw new Error('Unexpected value');
    }
  }

  return lines;
}

/**
 * Converts `I18nRemoveOpCodes` array into a human readable format.