initial commit

crypto/vm/excno.hpp

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+/*
+    This file is part of TON Blockchain Library.
+
+    TON Blockchain Library is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    TON Blockchain Library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with TON Blockchain Library.  If not, see <http://www.gnu.org/licenses/>.
+
+    Copyright 2017-2019 Telegram Systems LLP
+*/
+#pragma once
+
+namespace vm {
+
+enum class Excno : int {
+  none = 0,
+  alt = 1,
+  stk_und = 2,
+  stk_ov = 3,
+  int_ov = 4,
+  range_chk = 5,
+  inv_opcode = 6,
+  type_chk = 7,
+  cell_ov = 8,
+  cell_und = 9,
+  dict_err = 10,
+  unknown = 11,
+  fatal = 12,
+  out_of_gas = 13,
+  virt_err = 14,
+  total
+};
+
+const char* get_exception_msg(Excno exc_no);
+
+class VmError {
+  Excno exc_no;
+  const char* msg;
+  long long arg;
+
+ public:
+  VmError(Excno _excno, const char* _msg) : exc_no(_excno), msg(_msg), arg(0) {
+  }
+  VmError(Excno _excno) : exc_no(_excno), msg(0), arg(0) {
+  }
+  VmError(Excno _excno, const char* _msg, long long _arg) : exc_no(_excno), msg(_msg), arg(_arg) {
+  }
+  int get_errno() const {
+    return static_cast<int>(exc_no);
+  }
+  const char* get_msg() const {
+    return msg ? msg : get_exception_msg(exc_no);
+  }
+  long long get_arg() const {
+    return arg;
+  }
+};
+
+struct VmNoGas {
+  VmNoGas() = default;
+  int get_errno() const {
+    return static_cast<int>(Excno::out_of_gas);
+  }
+  const char* get_msg() const {
+    return "out of gas";
+  }
+  operator VmError() const {
+    return VmError{Excno::out_of_gas, "out of gas"};
+  }
+};
+
+struct VmVirtError {
+  int virtualization{0};
+  VmVirtError() = default;
+  VmVirtError(int virtualization) : virtualization(virtualization) {
+  }
+  int get_errno() const {
+    return static_cast<int>(Excno::virt_err);
+  }
+  const char* get_msg() const {
+    return "prunned branch";
+  }
+  operator VmError() const {
+    return VmError{Excno::virt_err, "prunned branch", virtualization};
+  }
+};
+
+struct VmFatal {};
+
+}  // namespace vm