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authorBoris Kolpackov <boris@codesynthesis.com>2024-02-12 09:34:50 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2024-02-12 09:34:50 +0200
commit20e49b4e63779abc0e25bec4c74399a83ec8a83c (patch)
tree9f2f01ff0b6a40142fa8ee04a1a394c5b98c9a57 /libbuild2
parentf0cfe78cb306532518d42e3d2b8e59405d006717 (diff)
Add ability to specify recipes in separate files
This can now be achieved with the new `recipe` directive: recipe <language> <file> Note that similar to the use of if-else and switch directives with recipes, this directive requires explicit % recipe header. For example, instead of: file{foo.output}: {{ echo 'hello' >$path($>) }} We can now write: file{foo.output}: % recipe buildscript hello.buildscript With hello.buildscript containing: echo 'hello' >$path($>) Similarly, for C++ recipes (this time for a pattern), instead of: [rule_name=hello] file{~'/(.+)\.output/'}: % update clean {{ c++ 1 -- -- ... }} We can now write: [rule_name=hello] file{~'/(.+)\.output/'}: % update clean recipe c++ hello.cxx With hello.cxx containing: // c++ 1 -- -- ... Relative <file> paths are resolved using the buildfile directory that contains the `recipe` directive as a base. Note also that this mechanism can be used in exported buildfiles with recipe files placed into build/export/ together with buildfiles.
Diffstat (limited to 'libbuild2')
-rw-r--r--libbuild2/parser.cxx563
-rw-r--r--libbuild2/parser.hxx15
-rw-r--r--libbuild2/target.cxx49
-rw-r--r--libbuild2/target.hxx16
4 files changed, 494 insertions, 149 deletions
diff --git a/libbuild2/parser.cxx b/libbuild2/parser.cxx
index 7cc01e3..6ccae8a 100644
--- a/libbuild2/parser.cxx
+++ b/libbuild2/parser.cxx
@@ -311,7 +311,7 @@ namespace build2
: auto_project_env ());
const buildfile* bf (enter && path_->path != nullptr
- ? &enter_buildfile (*path_->path)
+ ? &enter_buildfile<buildfile> (*path_->path)
: nullptr);
token t;
type tt;
@@ -345,7 +345,7 @@ namespace build2
? out_src (name.path->directory (), rs)
: dir_path ());
- enter_buildfile (*name.path, move (out));
+ enter_buildfile<buildfile> (*name.path, move (out));
}
parse_buildfile (is, name, &gs, ts, nullptr, nullptr, false /* enter */);
@@ -617,6 +617,12 @@ namespace build2
{
f = &parser::parse_config_environment;
}
+ else if (n == "recipe")
+ {
+ // Valid only after recipe header (%).
+ //
+ fail (t) << n << " directive without % recipe header";
+ }
if (f != nullptr)
{
@@ -1917,7 +1923,7 @@ namespace build2
// Parse a recipe chain.
//
// % [<attrs>] [<buildspec>]
- // [if|if!|switch ...]
+ // [if|if!|switch|recipe ...]
// {{ [<lang> ...]
// ...
// }}
@@ -1994,7 +2000,131 @@ namespace build2
attributes& as;
buildspec& bs;
const location& bsloc;
- } d {ttype, name, recipes, first, clean, i, as, bs, bsloc};
+ function<void (string&&)> parse_trailer;
+ } d {ttype, name, recipes, first, clean, i, as, bs, bsloc, {}};
+
+ d.parse_trailer = [this, &d] (string&& text)
+ {
+ if (d.first)
+ {
+ adhoc_rule& ar (*d.recipes.back ());
+
+ // Translate each buildspec entry into action and add it to the
+ // recipe entry.
+ //
+ const location& l (d.bsloc);
+
+ for (metaopspec& m: d.bs)
+ {
+ meta_operation_id mi (ctx->meta_operation_table.find (m.name));
+
+ if (mi == 0)
+ fail (l) << "unknown meta-operation " << m.name;
+
+ const meta_operation_info* mf (
+ root_->root_extra->meta_operations[mi]);
+
+ if (mf == nullptr)
+ fail (l) << "project " << *root_ << " does not support meta-"
+ << "operation " << ctx->meta_operation_table[mi].name;
+
+ for (opspec& o: m)
+ {
+ operation_id oi;
+ if (o.name.empty ())
+ {
+ if (mf->operation_pre == nullptr)
+ oi = update_id;
+ else
+ // Calling operation_pre() to translate doesn't feel
+ // appropriate here.
+ //
+ fail (l) << "default operation in recipe action" << endf;
+ }
+ else
+ oi = ctx->operation_table.find (o.name);
+
+ if (oi == 0)
+ fail (l) << "unknown operation " << o.name;
+
+ const operation_info* of (root_->root_extra->operations[oi]);
+
+ if (of == nullptr)
+ fail (l) << "project " << *root_ << " does not support "
+ << "operation " << ctx->operation_table[oi];
+
+ // Note: for now always inner (see match_rule_impl() for
+ // details).
+ //
+ action a (mi, oi);
+
+ // Check for duplicates (local).
+ //
+ if (find_if (
+ d.recipes.begin (), d.recipes.end (),
+ [a] (const shared_ptr<adhoc_rule>& r)
+ {
+ auto& as (r->actions);
+ return find (as.begin (), as.end (), a) != as.end ();
+ }) != d.recipes.end ())
+ {
+ fail (l) << "duplicate " << mf->name << '(' << of->name
+ << ") recipe";
+ }
+
+ ar.actions.push_back (a);
+ }
+ }
+
+ // Set the recipe text.
+ //
+ if (ar.recipe_text (
+ *scope_,
+ d.ttype != nullptr ? *d.ttype : target_->type (),
+ move (text),
+ d.as))
+ d.clean = true;
+
+ // Verify we have no unhandled attributes.
+ //
+ for (attribute& a: d.as)
+ fail (d.as.loc) << "unknown recipe attribute " << a << endf;
+ }
+
+ // Copy the recipe over to the target verifying there are no
+ // duplicates (global).
+ //
+ if (target_ != nullptr)
+ {
+ const shared_ptr<adhoc_rule>& r (d.recipes[d.i]);
+
+ for (const shared_ptr<adhoc_rule>& er: target_->adhoc_recipes)
+ {
+ auto& as (er->actions);
+
+ for (action a: r->actions)
+ {
+ if (find (as.begin (), as.end (), a) != as.end ())
+ {
+ const meta_operation_info* mf (
+ root_->root_extra->meta_operations[a.meta_operation ()]);
+
+ const operation_info* of (
+ root_->root_extra->operations[a.operation ()]);
+
+ fail (d.bsloc)
+ << "duplicate " << mf->name << '(' << of->name
+ << ") recipe for target " << *target_;
+ }
+ }
+ }
+
+ target_->adhoc_recipes.push_back (r);
+
+ // Note that "registration" of configure_* and dist_* actions
+ // (similar to ad hoc rules) is provided by match_adhoc_recipe().
+ }
+ };
// Note that this function must be called at most once per iteration.
//
@@ -2037,7 +2167,7 @@ namespace build2
// to rule_name.
shared_ptr<adhoc_rule> ar;
- if (!lang)
+ if (!lang || icasecmp (*lang, "buildscript") == 0)
{
// Buildscript
//
@@ -2133,133 +2263,198 @@ namespace build2
}
if (!skip)
- {
- if (d.first)
- {
- adhoc_rule& ar (*d.recipes.back ());
-
- // Translate each buildspec entry into action and add it to the
- // recipe entry.
- //
- const location& l (d.bsloc);
-
- for (metaopspec& m: d.bs)
- {
- meta_operation_id mi (ctx->meta_operation_table.find (m.name));
+ d.parse_trailer (move (t.value));
- if (mi == 0)
- fail (l) << "unknown meta-operation " << m.name;
+ next (t, tt);
+ assert (tt == type::multi_rcbrace);
- const meta_operation_info* mf (
- root_->root_extra->meta_operations[mi]);
+ next (t, tt); // Newline.
+ next_after_newline (t, tt, token (t)); // Should be on its own line.
+ };
- if (mf == nullptr)
- fail (l) << "project " << *root_ << " does not support meta-"
- << "operation " << ctx->meta_operation_table[mi].name;
+ auto parse_recipe_directive = [this, &d] (token& t, type& tt,
+ const string&)
+ {
+ // Parse recipe directive:
+ //
+ // recipe <lang> <file>
+ //
+ // Note that here <lang> is not optional.
+ //
+ // @@ We could guess <lang> from the extension.
- for (opspec& o: m)
- {
- operation_id oi;
- if (o.name.empty ())
- {
- if (mf->operation_pre == nullptr)
- oi = update_id;
- else
- // Calling operation_pre() to translate doesn't feel
- // appropriate here.
- //
- fail (l) << "default operation in recipe action" << endf;
- }
- else
- oi = ctx->operation_table.find (o.name);
+ // Use value mode to minimize the number of special characters.
+ //
+ mode (lexer_mode::value, '@');
- if (oi == 0)
- fail (l) << "unknown operation " << o.name;
+ // Parse <lang>.
+ //
+ if (next (t, tt) != type::word)
+ fail (t) << "expected recipe language instead of " << t;
- const operation_info* of (root_->root_extra->operations[oi]);
+ location lloc (get_location (t));
+ string lang (t.value);
+ next (t, tt);
- if (of == nullptr)
- fail (l) << "project " << *root_ << " does not support "
- << "operation " << ctx->operation_table[oi];
+ // Parse <file> as names to get variable expansion, etc.
+ //
+ location nloc (get_location (t));
+ names ns (parse_names (t, tt, pattern_mode::ignore, "file name"));
- // Note: for now always inner (see match_rule_impl() for
- // details).
- //
- action a (mi, oi);
+ path file;
+ try
+ {
+ file = convert<path> (move (ns));
+ }
+ catch (const invalid_argument& e)
+ {
+ fail (nloc) << "invalid recipe file path: " << e;
+ }
- // Check for duplicates (local).
- //
- if (find_if (
- d.recipes.begin (), d.recipes.end (),
- [a] (const shared_ptr<adhoc_rule>& r)
- {
- auto& as (r->actions);
- return find (as.begin (), as.end (), a) != as.end ();
- }) != d.recipes.end ())
- {
- fail (l) << "duplicate " << mf->name << '(' << of->name
- << ") recipe";
- }
+ string text;
+ if (d.first)
+ {
+ // Source relative to the buildfile rather than src scope. In
+ // particular, this make sourcing from exported buildfiles work.
+ //
+ if (file.relative () && path_->path != nullptr)
+ {
+ // Note: all sourced/included/imported paths are absolute and
+ // normalized.
+ //
+ file = path_->path->directory () / file;
+ }
- ar.actions.push_back (a);
- }
- }
+ file.normalize ();
- // Set the recipe text.
- //
- if (ar.recipe_text (
- *scope_,
- d.ttype != nullptr ? *d.ttype : target_->type (),
- move (t.value),
- d.as))
- d.clean = true;
-
- // Verify we have no unhandled attributes.
- //
- for (attribute& a: d.as)
- fail (d.as.loc) << "unknown recipe attribute " << a << endf;
+ try
+ {
+ ifdstream ifs (file);
+ text = ifs.read_text ();
+ }
+ catch (const io_error& e)
+ {
+ fail (nloc) << "unable to read recipe file " << file << ": " << e;
}
- // Copy the recipe over to the target verifying there are no
- // duplicates (global).
- //
- if (target_ != nullptr)
+ shared_ptr<adhoc_rule> ar;
{
- const shared_ptr<adhoc_rule>& r (d.recipes[d.i]);
+ // This is expected to be the location of the opening multi-curly
+ // with the recipe body starting from the following line. So we
+ // need to fudge the line number a bit.
+ //
+ location loc (file, 0, 1);
- for (const shared_ptr<adhoc_rule>& er: target_->adhoc_recipes)
+ if (icasecmp (lang, "buildscript") == 0)
{
- auto& as (er->actions);
+ // Buildscript
+ //
+ ar.reset (
+ new adhoc_buildscript_rule (
+ d.name.empty () ? "<ad hoc buildscript recipe>" : d.name,
+ loc,
+ 2)); // Use `{{` and `}}` for dump.
- for (action a: r->actions)
+ // Enter as buildfile-like so that it gets automatically
+ // distributed. Note: must be consistent with build/export/
+ // handling in process_default_target().
+ //
+ enter_buildfile<buildscript> (file);
+ }
+ else if (icasecmp (lang, "c++") == 0)
+ {
+ // C++
+ //
+ // We expect to find a C++ comment line with version and
+ // optional fragment separator before the first non-comment,
+ // non-blank line:
+ //
+ // // c++ <ver> [<sep>]
+ //
+ string s;
+ location sloc (file, 1, 1);
{
- if (find (as.begin (), as.end (), a) != as.end ())
+ // @@ Line is inaccurate since we skip consecutive newlines!
+ //
+ size_t b (0), e (0);
+ for (; next_word (text, b, e, '\n', '\r'); sloc.line++)
{
- const meta_operation_info* mf (
- root_->root_extra->meta_operations[a.meta_operation ()]);
+ s.assign (text, b, e - b);
- const operation_info* of (
- root_->root_extra->operations[a.operation ()]);
+ if (!trim (s).empty ())
+ {
+ if (icasecmp (s, "// c++ ", 7) == 0)
+ break;
+
+ if (s[0] != '/' || s[1] != '/')
+ {
+ b = e;
+ break;
+ }
+ }
+ }
+
+ if (b == e)
+ fail (sloc) << "no '// c++ <version> [<separator>]' line";
+ }
+
+ uint64_t ver;
+ optional<string> sep;
+ {
+ size_t b (7), e (7);
+ if (next_word (s, b, e, ' ', '\t') == 0)
+ fail (sloc) << "missing c++ recipe version" << endf;
+
+ try
+ {
+ ver = convert<uint64_t> (build2::name (string (s, b, e - b)));
+ }
+ catch (const invalid_argument& e)
+ {
+ fail (sloc) << "invalid c++ recipe version: " << e << endf;
+ }
- fail (d.bsloc)
- << "duplicate " << mf->name << '(' << of->name
- << ") recipe for target " << *target_;
+ if (next_word (s, b, e, ' ', '\t') != 0)
+ {
+ sep = string (s, b, e - b);
+
+ if (next_word (s, b, e, ' ', '\t') != 0)
+ fail (sloc) << "junk after fragment separator";
}
}
- }
- target_->adhoc_recipes.push_back (r);
+ ar.reset (
+ new adhoc_cxx_rule (
+ d.name.empty () ? "<ad hoc c++ recipe>" : d.name,
+ loc,
+ 2, // Use `{{` and `}}` for dump.
+ ver,
+ move (sep)));
- // Note that "registration" of configure_* and dist_* actions
- // (similar to ad hoc rules) is provided by match_adhoc_recipe().
+ // Enter as buildfile-like so that it gets automatically
+ // distributed. Note: must be consistent with build/export/
+ // handling in process_default_target().
+ //
+ // While ideally we would want to use the cxx{} target type,
+ // it's defined in a seperate build system module (which may not
+ // even be loaded by this project, so even runtime lookup won't
+ // work). So we use file{} instead.
+ //
+ enter_buildfile<build2::file> (file);
+ }
+ else
+ fail (lloc) << "unknown recipe language '" << lang << "'";
}
+
+ assert (d.recipes[d.i] == nullptr);
+ d.recipes[d.i] = move (ar);
}
+ else
+ assert (d.recipes[d.i] != nullptr);
- next (t, tt);
- assert (tt == type::multi_rcbrace);
+ d.parse_trailer (move (text));
- next (t, tt); // Newline.
- next_after_newline (t, tt, token (t)); // Should be on its own line.
+ next_after_newline (t, tt);
};
bsloc = get_location (t); // Fallback location.
@@ -2319,7 +2514,7 @@ namespace build2
expire_mode ();
next_after_newline (t, tt, "recipe action");
- // See if this is if-else or switch.
+ // See if this is if-else/switch or `recipe`.
//
// We want the keyword test similar to parse_clause() but we cannot do
// it if replaying. So we skip it with understanding that if it's not
@@ -2337,12 +2532,19 @@ namespace build2
if (n == "if" || n == "if!")
{
- parse_if_else (t, tt, true /* multi */, parse_block);
+ parse_if_else (t, tt, true /* multi */,
+ parse_block, parse_recipe_directive);
continue;
}
else if (n == "switch")
{
- parse_switch (t, tt, true /* multi */, parse_block);
+ parse_switch (t, tt, true /* multi */,
+ parse_block, parse_recipe_directive);
+ continue;
+ }
+ else if (n == "recipe")
+ {
+ parse_recipe_directive (t, tt, "" /* kind */);
continue;
}
@@ -2350,7 +2552,7 @@ namespace build2
}
if (tt != type::multi_lcbrace)
- fail (t) << "expected recipe block instead of " << t;
+ fail (t) << "expected recipe block or 'recipe' instead of " << t;
// Fall through.
}
@@ -3188,7 +3390,7 @@ namespace build2
l5 ([&]{trace (loc) << "entering " << in;});
const buildfile* bf (in.path != nullptr
- ? &enter_buildfile (*in.path)
+ ? &enter_buildfile<buildfile> (*in.path)
: nullptr);
const path_name* op (path_);
@@ -4680,14 +4882,17 @@ namespace build2
[this] (token& t, type& tt, bool s, const string& k)
{
return parse_clause_block (t, tt, s, k);
- });
+ },
+ {});
}
void parser::
parse_if_else (token& t, type& tt,
bool multi,
const function<void (
- token&, type&, bool, const string&)>& parse_block)
+ token&, type&, bool, const string&)>& parse_block,
+ const function<void (
+ token&, token_type&, const string&)>& parse_recipe_directive)
{
// Handle the whole if-else chain. See tests/if-else.
//
@@ -4772,35 +4977,65 @@ namespace build2
parse_block (t, tt, !take, k);
taken = taken || take;
}
- else if (!multi) // No lines in multi-curly if-else.
+ else
{
- if (tt == type::multi_lcbrace)
- fail (t) << "expected " << k << "-line instead of " << t <<
- info << "did you forget to specify % recipe header?";
-
- if (take)
+ // The only valid line in multi-curly if-else is `recipe`.
+ //
+ if (multi)
{
- if (!parse_clause (t, tt, true))
- fail (t) << "expected " << k << "-line instead of " << t;
+ // Note that we cannot do the keyword test if we are replaying. So
+ // we skip it with the understanding that if it's not a keywords,
+ // then we wouldn't have gotten here on the replay.
+ //
+ if (tt == type::word &&
+ (replay_ == replay::play || keyword (t)) &&
+ t.value == "recipe")
+ {
+ if (take)
+ {
+ parse_recipe_directive (t, tt, k);
+ taken = true;
+ }
+ else
+ {
+ skip_line (t, tt);
- taken = true;
+ if (tt == type::newline)
+ next (t, tt);
+ }
+ }
+ else
+ fail (t) << "expected " << k << "-block or 'recipe' instead of "
+ << t;
}
else
{
- skip_line (t, tt);
+ if (tt == type::multi_lcbrace)
+ fail (t) << "expected " << k << "-line instead of " << t <<
+ info << "did you forget to specify % recipe header?";
- if (tt == type::newline)
- next (t, tt);
+ if (take)
+ {
+ if (!parse_clause (t, tt, true))
+ fail (t) << "expected " << k << "-line instead of " << t;
+
+ taken = true;
+ }
+ else
+ {
+ skip_line (t, tt);
+
+ if (tt == type::newline)
+ next (t, tt);
+ }
}
}
- else
- fail (t) << "expected " << k << "-block instead of " << t;
// See if we have another el* keyword.
//
// Note that we cannot do the keyword test if we are replaying. So we
// skip it with the understanding that if it's not a keywords, then we
- // wouldn't have gotten here on the reply (see parse_recipe() for
+ // wouldn't have gotten here on the replay (see parse_recipe() for
// details).
//
if (k != "else" &&
@@ -4831,14 +5066,17 @@ namespace build2
[this] (token& t, type& tt, bool s, const string& k)
{
return parse_clause_block (t, tt, s, k);
- });
+ },
+ {});
}
void parser::
parse_switch (token& t, type& tt,
bool multi,
const function<void (
- token&, type&, bool, const string&)>& parse_block)
+ token&, type&, bool, const string&)>& parse_block,
+ const function<void (
+ token&, token_type&, const string&)>& parse_recipe_directive)
{
// switch <value> [: <func> [<arg>]] [, <value>...]
// {
@@ -4933,7 +5171,7 @@ namespace build2
{
// Note that we cannot do the keyword test if we are replaying. So we
// skip it with the understanding that if it's not a keywords, then we
- // wouldn't have gotten here on the reply (see parse_recipe() for
+ // wouldn't have gotten here on the replay (see parse_recipe() for
// details). Note that this appears to mean that replay cannot be used
// if we allow lines, only blocks. Consider:
//
@@ -5139,25 +5377,49 @@ namespace build2
parse_block (t, tt, !take, k);
taken = taken || take;
}
- else if (!multi) // No lines in multi-curly if-else.
+ else
{
- if (take)
+ if (multi)
{
- if (!parse_clause (t, tt, true))
- fail (t) << "expected " << k << "-line instead of " << t;
+ if (tt == type::word &&
+ (replay_ == replay::play || keyword (t)) &&
+ t.value == "recipe")
+ {
+ if (take)
+ {
+ parse_recipe_directive (t, tt, k);
+ taken = true;
+ }
+ else
+ {
+ skip_line (t, tt);
- taken = true;
+ if (tt == type::newline)
+ next (t, tt);
+ }
+ }
+ else
+ fail (t) << "expected " << k << "-block or 'recipe' instead of "
+ << t;
}
else
{
- skip_line (t, tt);
+ if (take)
+ {
+ if (!parse_clause (t, tt, true))
+ fail (t) << "expected " << k << "-line instead of " << t;
- if (tt == type::newline)
- next (t, tt);
+ taken = true;
+ }
+ else
+ {
+ skip_line (t, tt);
+
+ if (tt == type::newline)
+ next (t, tt);
+ }
}
}
- else
- fail (t) << "expected " << k << "-block instead of " << t;
}
if (tt != type::rcbrace)
@@ -9642,7 +9904,17 @@ namespace build2
{
const path& n (e.path ());
- if (n.extension () == build_ext)
+ // Besides the buildfile also export buildscript and C++ files
+ // that are used to provide recipe implementations (see
+ // parse_recipe() for details).
+ //
+ string e (n.extension ());
+ if (const target_type* tt = (
+ e == build_ext ? &buildfile::static_type :
+ e == "buildscript" ? &buildscript::static_type :
+ e == "cxx" ||
+ e == "cpp" ||
+ e == "cc" ? &file::static_type : nullptr))
{
// Enter as if found by search_existing_file(). Note that
// entering it as real would cause file_rule not to match
@@ -9652,13 +9924,13 @@ namespace build2
// example, if already imported).
//
const target& bf (
- ctx->targets.insert (buildfile::static_type,
+ ctx->targets.insert (*tt,
d,
(root_->out_eq_src ()
? dir_path ()
: out_src (d, *root_)),
n.base ().string (),
- build_ext,
+ move (e),
target_decl::prereq_file,
trace).first);
@@ -9696,7 +9968,7 @@ namespace build2
// subdirectories inside export/. Essentially, we are arranging for
// this:
//
- // build/export/buildfile{*}:
+ // build/export/file{*}:
// {
// install = buildfile/
// install.subdirs = true
@@ -9705,7 +9977,7 @@ namespace build2
if (cast_false<bool> (root_->vars["install.loaded"]))
{
enter_scope es (*this, dir_path (export_dir));
- auto& vars (scope_->target_vars[buildfile::static_type]["*"]);
+ auto& vars (scope_->target_vars[file::static_type]["*"]);
// @@ TODO: get cached variables from the module once we have one.
//
@@ -9728,7 +10000,8 @@ namespace build2
}
}
- const buildfile& parser::
+ template <typename T>
+ const T& parser::
enter_buildfile (const path& p, optional<dir_path> out)
{
tracer trace ("parser::enter_buildfile", &path_);
@@ -9748,7 +10021,7 @@ namespace build2
o = out_src (d, *root_);
}
- return ctx->targets.insert<buildfile> (
+ return ctx->targets.insert<T> (
move (d),
move (o),
p.leaf ().base ().string (),
diff --git a/libbuild2/parser.hxx b/libbuild2/parser.hxx
index b756984..0645b5a 100644
--- a/libbuild2/parser.hxx
+++ b/libbuild2/parser.hxx
@@ -265,7 +265,9 @@ namespace build2
parse_if_else (token&, token_type&,
bool,
const function<void (
- token&, token_type&, bool, const string&)>&);
+ token&, token_type&, bool, const string&)>&,
+ const function<void (
+ token&, token_type&, const string&)>&);
void
parse_switch (token&, token_type&);
@@ -274,7 +276,9 @@ namespace build2
parse_switch (token&, token_type&,
bool,
const function<void (
- token&, token_type&, bool, const string&)>&);
+ token&, token_type&, bool, const string&)>&,
+ const function<void (
+ token&, token_type&, const string&)>&);
void
parse_for (token&, token_type&);
@@ -617,9 +621,12 @@ namespace build2
void
process_default_target (token&, const buildfile*);
- // Enter buildfile as a target.
+ private:
+ // Enter buildfile or buildfile-file like file (e.g., a recipe file) as a
+ // target.
//
- const buildfile&
+ template <typename T>
+ const T&
enter_buildfile (const path&, optional<dir_path> out = nullopt);
// Lexer.
diff --git a/libbuild2/target.cxx b/libbuild2/target.cxx
index a70830e..2a134a4 100644
--- a/libbuild2/target.cxx
+++ b/libbuild2/target.cxx
@@ -1775,6 +1775,55 @@ namespace build2
target_type::flag::none
};
+ static const char*
+ buildscript_target_extension (const target_key& tk, const scope*)
+ {
+ // If the name is special 'buildscript', then there is no extension,
+ // otherwise it is .buildscript.
+ //
+ return *tk.name == "buildscript" ? "" : "buildscript";
+ }
+
+ static bool
+ buildscript_target_pattern (const target_type&,
+ const scope&,
+ string& v,
+ optional<string>& e,
+ const location& l,
+ bool r)
+ {
+ if (r)
+ {
+ assert (e);
+ e = nullopt;
+ }
+ else
+ {
+ e = target::split_name (v, l);
+
+ if (!e && v != "buildscript")
+ {
+ e = "buildscript";
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ const target_type buildscript::static_type
+ {
+ "buildscript",
+ &file::static_type,
+ &target_factory<buildscript>,
+ &buildscript_target_extension,
+ nullptr, /* default_extension */
+ &buildscript_target_pattern,
+ nullptr,
+ &file_search,
+ target_type::flag::none
+ };
+
const target_type doc::static_type
{
"doc",
diff --git a/libbuild2/target.hxx b/libbuild2/target.hxx
index 41bf095..b97d562 100644
--- a/libbuild2/target.hxx
+++ b/libbuild2/target.hxx
@@ -2501,6 +2501,22 @@ namespace build2
static const target_type static_type;
};
+ // This target type is primarily used for files mentioned in the `recipe`
+ // directive.
+ //
+ class LIBBUILD2_SYMEXPORT buildscript: public file
+ {
+ public:
+ buildscript (context& c, dir_path d, dir_path o, string n)
+ : file (c, move (d), move (o), move (n))
+ {
+ dynamic_type = &static_type;
+ }
+
+ public:
+ static const target_type static_type;
+ };
+
// Common documentation file target.
//
class LIBBUILD2_SYMEXPORT doc: public file