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957a081892
The C++ interface is intentionally minimal: it provides only a couple of niceties in order to largely stay out of the way. It is mostly used to provide: * RAII for opaque resources * Safe up and down casting for nodes * string_view for various resources * Iteration over resource lists Note that if consumers want to use it, they must be on C++17 at minimum. https://github.com/ruby/prism/commit/57b8dbe0e9
44 lines
907 B
C++
44 lines
907 B
C++
/**
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* @file options.hpp
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*
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* Ownership of parse options from C++.
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*/
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#ifndef PRISM_OPTIONS_HPP
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#define PRISM_OPTIONS_HPP
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#include "prism/compiler/cplusplus.hpp"
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#include "prism/options.h"
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#include <memory>
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namespace prism {
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/** Frees options with pm_options_free. */
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struct options_deleter {
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/**
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* Free the given options.
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*
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* @param options The options to free.
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*/
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void operator()(pm_options_t *options) const noexcept { pm_options_free(options); }
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};
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/** An owned set of options. */
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using unique_options = std::unique_ptr<pm_options_t, options_deleter>;
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/**
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* Allocate a new set of options with every option at its default. Allocation
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* failure aborts, so this never throws.
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*
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* @return A unique_options owning the newly allocated options.
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*/
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[[nodiscard]] inline unique_options
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make_options() noexcept {
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return unique_options(pm_options_new());
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}
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}
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#endif
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