XACC
qasm.h
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1 /*
2  * This file is part of Quantum++.
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4  * MIT License
5  *
6  * Copyright (c) 2013 - 2020 Vlad Gheorghiu.
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26 
32 #ifndef QASM_QASM_H_
33 #define QASM_QASM_H_
34 
35 namespace qpp {
36 namespace qasm {
37 
44 inline QCircuit read(std::istream& stream) {
45  Preprocessor pp;
46  Parser parser(pp);
47 
48  // do not manage the stream, use [](std::istream*){} as shared_ptr deleter
49  pp.add_target_stream(
50  std::shared_ptr<std::istream>(&stream, [](std::istream*) {}));
51 
52  return *parser.parse();
53 }
54 
61 inline QCircuit read_from_file(const std::string& fname) {
62  Preprocessor pp;
63  Parser parser(pp);
64 
65  std::shared_ptr<std::ifstream> ifs(new std::ifstream);
66 
67  // EXCEPTION CHECKS
68 
69  ifs->open(fname, std::ifstream::in);
70  if (!ifs->good()) {
71  ifs->close();
72  throw exception::FileNotFound("qpp::qasm::read_from_file()");
73  }
74  // END EXCEPTION CHECKS
75 
76  pp.add_target_stream(ifs, fname);
77 
78  return *parser.parse();
79 }
80 
81 } /* namespace qasm */
82 } /* namespace qpp */
83 
84 #endif /* QASM_QASM_H_ */
Quantum++ main namespace.
Definition: circuits.h:35