public Expression compile()

in xalan/src/main/java/org/apache/xpath/compiler/Compiler.java [114:197]
76 lines of code
32 McCabe index (conditional complexity)

  public Expression compile(int opPos) throws TransformerException
  {

    int op = getOp(opPos);

    Expression expr = null;
    // System.out.println(getPatternString()+"op: "+op);
    switch (op)
    {
    case OpCodes.OP_XPATH :
      expr = compile(opPos + 2); break;
    case OpCodes.OP_OR :
      expr = or(opPos); break;
    case OpCodes.OP_AND :
      expr = and(opPos); break;
    case OpCodes.OP_NOTEQUALS :
      expr = notequals(opPos); break;
    case OpCodes.OP_EQUALS :
      expr = equals(opPos); break;
    case OpCodes.OP_LTE :
      expr = lte(opPos); break;
    case OpCodes.OP_LT :
      expr = lt(opPos); break;
    case OpCodes.OP_GTE :
      expr = gte(opPos); break;
    case OpCodes.OP_GT :
      expr = gt(opPos); break;
    case OpCodes.OP_PLUS :
      expr = plus(opPos); break;
    case OpCodes.OP_MINUS :
      expr = minus(opPos); break;
    case OpCodes.OP_MULT :
      expr = mult(opPos); break;
    case OpCodes.OP_DIV :
      expr = div(opPos); break;
    case OpCodes.OP_MOD :
      expr = mod(opPos); break;
//    case OpCodes.OP_QUO :
//      expr = quo(opPos); break;
    case OpCodes.OP_NEG :
      expr = neg(opPos); break;
    case OpCodes.OP_STRING :
      expr = string(opPos); break;
    case OpCodes.OP_BOOL :
      expr = bool(opPos); break;
    case OpCodes.OP_NUMBER :
      expr = number(opPos); break;
    case OpCodes.OP_UNION :
      expr = union(opPos); break;
    case OpCodes.OP_LITERAL :
      expr = literal(opPos); break;
    case OpCodes.OP_VARIABLE :
      expr = variable(opPos); break;
    case OpCodes.OP_GROUP :
      expr = group(opPos); break;
    case OpCodes.OP_NUMBERLIT :
      expr = numberlit(opPos); break;
    case OpCodes.OP_ARGUMENT :
      expr = arg(opPos); break;
    case OpCodes.OP_EXTFUNCTION :
      expr = compileExtension(opPos); break;
    case OpCodes.OP_FUNCTION :
      expr = compileFunction(opPos); break;
    case OpCodes.OP_LOCATIONPATH :
      expr = locationPath(opPos); break;
    case OpCodes.OP_PREDICATE :
      expr = null; break;  // should never hit this here.
    case OpCodes.OP_MATCHPATTERN :
      expr = matchPattern(opPos + 2); break;
    case OpCodes.OP_LOCATIONPATHPATTERN :
      expr = locationPathPattern(opPos); break;
    case OpCodes.OP_QUO:
      error(XPATHErrorResources.ER_UNKNOWN_OPCODE,
            new Object[]{ "quo" });  //"ERROR! Unknown op code: "+m_opMap[opPos]);
      break;
    default :
      error(XPATHErrorResources.ER_UNKNOWN_OPCODE,
            new Object[]{ Integer.toString(getOp(opPos)) });  //"ERROR! Unknown op code: "+m_opMap[opPos]);
    }
//    if(null != expr)
//      expr.setSourceLocator(m_locator);

    return expr;
  }