parseNode function

Node parseNode(Node parent, Token? label, Token? opecode, List<Token> operand, Env env, { required Token current, })

parse to node

Implementation

Node parseNode(
  Node parent,
  Token? label,
  Token? opecode,
  List<Token> operand,
  Env env, {
  required Token current,
}) {
  if (opecode == null) {
    return ErrorNode(
      '[SYNTAX ERROR] opecode not found.',
      start: current.end,
      end: current.end + 1,
      lineStart: current.lineStart,
      lineNumber: current.lineNumber,
    );
  }

  switch (opecode.runesAsString) {
    case 'LD':
    case 'ADDA':
    case 'SUBA':
    case 'ADDL':
    case 'SUBL':
    case 'AND':
    case 'OR':
    case 'XOR':
    case 'CPA':
    case 'CPL':
      return parseGeneralNode(
        parent,
        label,
        opecode,
        operand,
        env,
      );
    case 'ST':
    case 'LAD':
    case 'SLA':
    case 'SRA':
    case 'SLL':
    case 'SRL':
      return parseRadrxNode(
        parent,
        label,
        opecode,
        operand,
        env,
      );
    case 'JMI':
    case 'JNZ':
    case 'JZE':
    case 'JUMP':
    case 'JPL':
    case 'JOV':
    case 'PUSH':
    case 'CALL':
    case 'SVC':
      return parseAdrxNode(
        parent,
        label,
        opecode,
        operand,
        env,
      );
    case 'POP':
      return parseRNode(
        parent,
        label,
        opecode,
        operand,
        env,
      );
    case 'RET':
      return Statement(
        parent,
        opecode,
        operand,
        label: label,
        code: [LiteralCode(0x8100)],
      );
    case 'START':
    case 'END':
      return Statement(
        parent,
        opecode,
        operand,
        label: label,
      );
    case 'DC':
      // TODO error handling!
      return Statement(
        parent,
        opecode,
        operand,
        label: label,
        code: _parseDC(operand, env),
      );
    case 'DS':
      // TODO error handling!
      return Statement(
        parent,
        opecode,
        operand,
        label: label,
        code: _parseDS(operand, env),
      );
    default:
      return parseMacro(
        parent,
        label,
        opecode,
        operand,
        env,
      );
  }
}