mirror of
https://github.com/fluencelabs/wasmer
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74 lines
1.6 KiB
C++
74 lines
1.6 KiB
C++
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// Copyright 2014 The Emscripten Authors. All rights reserved.
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// Emscripten is available under two separate licenses, the MIT license and the
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// University of Illinois/NCSA Open Source License. Both these licenses can be
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// found in the LICENSE file.
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#include <stdio.h>
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#include <string>
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#include <typeinfo>
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#include <stdexcept>
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using namespace std;
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class MathError: public std::runtime_error {
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public:
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explicit MathError(const std::string& what) : std::runtime_error(what) { }
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};
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std::string _latest_err_msg;
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int _result;
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int cpp_adder(int a, int b)
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{
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if (a < b)
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throw MathError ("a cannot be less than b.");
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return a + b;
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}
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extern "C" {
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const char* latest_err_msg() {
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return _latest_err_msg.c_str();
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}
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int result() { return _result; }
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int c_adder(int a, int b)
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{
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/*_1*/ try {
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/*_2*/ try {
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/*_3*/ try {
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_result = cpp_adder(a, b);
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/*+3a*/ } catch (MathError& e) {
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if (string(e.what()).find("not-found-here") == string::npos)
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throw MathError(string("Special exception caught: ") + typeid(e).name() + ": " + e.what());
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else
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throw;
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/*+3b*/ } catch (exception& e) {
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throw;
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}
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/*+2*/ } catch (exception& e) {
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throw;
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}
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return 0;
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/*+1*/ } catch (exception& e) {
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_latest_err_msg = string(typeid(e).name()) + ": " + e.what();
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return 1;
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}
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}
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}
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int main() {
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int rc;
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rc = c_adder(20, 35);
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if (rc == 0)
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printf("2nd call, result = %d\n", result());
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else
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printf("2nd call, sadface: %s\n", latest_err_msg());
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return 0;
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}
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