C++ (Cpp) h_rvm_create_action示例

示例#1

文件： action.c 项目： abiggerhammer/hammer

static bool action_ctrvm(HRVMProg *prog, void* env) {
  HParseAction *a = (HParseAction*)env;
  h_rvm_insert_insn(prog, RVM_PUSH, 0);
  if (!h_compile_regex(prog, a->p))
    return false;
  h_rvm_insert_insn(prog, RVM_ACTION, h_rvm_create_action(prog, h_svm_action_action, a));
  return true;
}

示例#2

文件： optional.c 项目： JakobR/hammer

static bool opt_ctrvm(HRVMProg *prog, void* env) {
  h_rvm_insert_insn(prog, RVM_PUSH, 0);
  uint16_t insn = h_rvm_insert_insn(prog, RVM_FORK, 0);
  HParser *p = (HParser*) env;
  if (!h_compile_regex(prog, p))
    return false;
  h_rvm_patch_arg(prog, insn, h_rvm_get_ip(prog));
  h_rvm_insert_insn(prog, RVM_ACTION, h_rvm_create_action(prog, h_svm_action_optional, NULL));
  return true;
}

示例#3

文件： sequence.c 项目： bsletten/hammer

static bool sequence_ctrvm(HRVMProg *prog, void *env) {
  HSequence *s = (HSequence*)env;
  h_rvm_insert_insn(prog, RVM_PUSH, 0);
  for (size_t i=0; i<s->len; ++i) {
    if (!s->p_array[i]->vtable->compile_to_rvm(prog, s->p_array[i]->env))
      return false;
  }
  h_rvm_insert_insn(prog, RVM_ACTION, h_rvm_create_action(prog, h_svm_action_make_sequence, NULL));
  return true;
}

示例#4

文件： ignoreseq.c 项目： JakobR/hammer

static bool is_ctrvm(HRVMProg *prog, void* env) {
  HIgnoreSeq *seq = (HIgnoreSeq*)env;
  for (size_t i=0; i<seq->len; ++i) {
    h_rvm_insert_insn(prog, RVM_PUSH, 0);
    if (!h_compile_regex(prog, seq->parsers[i]))
      return false;
  }
  h_rvm_insert_insn(prog, RVM_ACTION, h_rvm_create_action(prog, h_svm_action_ignoreseq, env));
  return true;
}

示例#5

文件： charset.c 项目： abiggerhammer/hammer

// FUTURE: this is horribly inefficient
static bool cs_ctrvm(HRVMProg *prog, void *env) {
  HCharset cs = (HCharset)env;
  h_rvm_insert_insn(prog, RVM_PUSH, 0);

  uint16_t start = h_rvm_get_ip(prog);

  uint8_t range_start = 0;
  bool collecting = false;
  for (size_t i=0; i<257; ++i) {
    // Position 256 is only there so that every included character has
    // a non-included character after it.
    if (i < 256 && charset_isset(cs, i)) {
      if (!collecting) {
	collecting = true;
	range_start = i;
      }
    } else {
      if (collecting) {
	collecting = false;
	uint16_t insn = h_rvm_insert_insn(prog, RVM_FORK, 0);
	h_rvm_insert_insn(prog, RVM_MATCH, range_start | (i-1) << 8);
	h_rvm_insert_insn(prog, RVM_GOTO, 0);
	h_rvm_patch_arg(prog, insn, h_rvm_get_ip(prog));
      }
    }
  }
  h_rvm_insert_insn(prog, RVM_MATCH, 0x00FF);
  uint16_t jump = h_rvm_insert_insn(prog, RVM_STEP, 0);
  for (size_t i=start; i<jump; ++i) {
    if (RVM_GOTO == prog->insns[i].op)
      h_rvm_patch_arg(prog, i, jump);
  }

  h_rvm_insert_insn(prog, RVM_CAPTURE, 0);
  h_rvm_insert_insn(prog, RVM_ACTION, h_rvm_create_action(prog, h_svm_action_ch, env));
  return true;
}