legal-13

来自「用Java实现的编译器。把源代码编译成SPARC汇编程序」· 代码 · 共 48 行

class Program
{
  boolean test_short_circuit(boolean and, boolean okay)
  {
    if (okay != true) {
      if (and) {
        callout("printf","short circuit failed in and\n");
      } else {
        callout("printf","short circuit failed in or\n");
      }
    } 
    return true;
  }

  void main()
  {
    boolean a;

    a = true;
    if (a && test_short_circuit(true, true)) {
	callout("printf","successfully did a short-circuited and...\n");
    } else {
	callout("printf","if failed on a && proc\n");
    }

    if (a!=true && test_short_circuit(true, false)) {
	callout("printf","if failed on !a && proc\n");
    } else {
	callout("printf","successfully did a short-circuited and...\n");
    }

    if (a || test_short_circuit(false, false)) {
	callout("printf","successfully did a short-circuited or...\n");
    } else {
	callout("printf","if failed on a || proc\n");
    }

    if (a!=true || test_short_circuit(false, true)) {
	callout("printf","successfully did a short-circuited or...\n");
    } else {
	callout("printf","if failed on !a || proc\n");
    }
  }
}