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b0612796b1
This provides a utility macro which prints out: - location of the call; - the expression being evaluated; and - the value of the expression. Evaluates to the value of the expression. Inspired by Rust's `dbg!` macro. See: https://doc.rust-lang.org/stable/std/macro.dbg.html
24 lines
520 B
C++
24 lines
520 B
C++
/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
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file Copyright.txt or https://cmake.org/licensing for details. */
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#pragma once
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#include <iostream>
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#define CM_DBG(expr) cm::dbg_impl(__FILE__, __LINE__, #expr, expr)
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namespace cm {
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namespace {
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template <typename T>
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T dbg_impl(const char* fname, int line, const char* expr, T value)
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{
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std::cerr << fname << ':' << line << ": " << expr << " = " << value
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<< std::endl;
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return value;
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}
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} // namespace
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} // namespace cm
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