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// file : build2/cc/compile.hxx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license : MIT; see accompanying LICENSE file
#ifndef BUILD2_CC_COMPILE_HXX
#define BUILD2_CC_COMPILE_HXX
#include <libbutl/path-map.hxx>
#include <build2/types.hxx>
#include <build2/utility.hxx>
#include <build2/rule.hxx>
#include <build2/filesystem.hxx> // auto_rmfile
#include <build2/cc/types.hxx>
#include <build2/cc/common.hxx>
namespace build2
{
class depdb;
namespace cc
{
// The order is arranged so that their integral values indicate whether
// one is a "stronger" than another.
//
enum class preprocessed: uint8_t {none, includes, modules, all};
// Positions of the re-exported bmi{}s. See search_modules() for
// details.
//
struct modules_positions
{
size_t ex_start;
size_t ex_tail;
};
class compile: public rule, virtual common
{
public:
compile (data&&);
virtual match_result
match (action, target&, const string&) const override;
virtual recipe
apply (action, target&) const override;
target_state
perform_update (action, const target&) const;
target_state
perform_clean (action, const target&) const;
private:
struct match_data;
void
append_lib_options (const scope&,
cstrings&,
const target&,
action, lorder) const;
void
hash_lib_options (const scope&,
sha256&,
const target&,
action, lorder) const;
// Mapping of include prefixes (e.g., foo in <foo/bar>) for auto-
// generated headers to directories where they will be generated.
//
// We are using a prefix map of directories (dir_path_map) instead of
// just a map in order to also cover sub-paths (e.g., <foo/more/bar> if
// we continue with the example). Specifically, we need to make sure we
// don't treat foobar as a sub-directory of foo.
//
// @@ The keys should be normalized.
//
using prefix_map = butl::dir_path_map<dir_path>;
void
append_prefixes (prefix_map&, const target&, const variable&) const;
void
append_lib_prefixes (const scope&,
prefix_map&,
target&,
action, lorder) const;
prefix_map
build_prefix_map (const scope&, target&, action, lorder) const;
// Reverse-lookup target type from extension.
//
const target_type*
map_extension (const scope&, const string&, const string&) const;
pair<auto_rmfile, bool>
extract_headers (action, file&, lorder,
const file&, const match_data&,
depdb&, bool&) const;
void
extract_modules (action, file&, lorder, const compile_target_types&,
const file&, auto_rmfile&, match_data&,
depdb&, bool&) const;
modules_positions
search_modules (const scope&,
action, file&, lorder, const target_type&,
module_imports&&) const;
void
append_modules (cstrings&, strings&, const file&) const;
// Language selection option (for VC) or the value for the -x option.
//
const char*
langopt (const match_data&) const;
private:
const string rule_id;
};
}
}
#endif // BUILD2_CC_COMPILE_HXX
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