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authorBoris Kolpackov <boris@codesynthesis.com>2020-03-27 06:10:41 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2020-03-27 06:10:41 +0200
commitee128a8d4c3d5739b31fbb9e935b319176837cc8 (patch)
tree82c0b0c5a83c6427cbb83184ce8add0f8833afab /libbuild2
parentdfd19b9637c6b917a40413a57b391d7ff27f50da (diff)
Share parser for loading root.build and pre/post hooks
Diffstat (limited to 'libbuild2')
-rw-r--r--libbuild2/file.cxx68
1 files changed, 43 insertions, 25 deletions
diff --git a/libbuild2/file.cxx b/libbuild2/file.cxx
index 7fd3f78..613f095 100644
--- a/libbuild2/file.cxx
+++ b/libbuild2/file.cxx
@@ -159,10 +159,8 @@ namespace build2
}
}
- using stage = parser::stage;
-
static void
- source (scope& root, scope& base, lexer& l, stage s)
+ source (parser& p, scope& root, scope& base, lexer& l)
{
tracer trace ("source");
@@ -171,8 +169,6 @@ namespace build2
try
{
l5 ([&]{trace << "sourcing " << fn;});
-
- parser p (root.ctx, s);
p.parse_buildfile (l, root, base);
}
catch (const io_error& e)
@@ -182,24 +178,24 @@ namespace build2
}
static inline void
- source (scope& root,
+ source (parser& p,
+ scope& root,
scope& base,
istream& is,
- const path_name& in,
- stage s)
+ const path_name& in)
{
lexer l (is, in);
- source (root, base, l, s);
+ source (p, root, base, l);
}
static void
- source (scope& root, scope& base, const path& bf, stage s)
+ source (parser& p, scope& root, scope& base, const path& bf)
{
path_name fn (bf);
try
{
ifdstream ifs;
- return source (root, base, open_file_or_stdin (fn, ifs), fn, s);
+ return source (p, root, base, open_file_or_stdin (fn, ifs), fn);
}
catch (const io_error& e)
{
@@ -208,7 +204,11 @@ namespace build2
}
static bool
- source_once (scope& root, scope& base, const path& bf, scope& once, stage s)
+ source_once (parser& p,
+ scope& root,
+ scope& base,
+ const path& bf,
+ scope& once)
{
tracer trace ("source_once");
@@ -218,32 +218,36 @@ namespace build2
return false;
}
- source (root, base, bf, s);
+ source (p, root, base, bf);
return true;
}
void
source (scope& root, scope& base, const path& bf)
{
- source (root, base, bf, stage::rest);
+ parser p (root.ctx);
+ source (p, root, base, bf);
}
void
source (scope& root, scope& base, istream& is, const path_name& in)
{
- source (root, base, is, in, stage::rest);
+ parser p (root.ctx);
+ source (p, root, base, is, in);
}
void
source (scope& root, scope& base, lexer& l)
{
- source (root, base, l, stage::rest);
+ parser p (root.ctx);
+ source (p, root, base, l);
}
bool
source_once (scope& root, scope& base, const path& bf, scope& once)
{
- return source_once (root, base, bf, once, stage::rest);
+ parser p (root.ctx);
+ return source_once (p, root, base, bf, once);
}
// Source (once) pre-*.build (pre is true) or post-*.build (otherwise) hooks
@@ -251,7 +255,7 @@ namespace build2
// must exist.
//
static void
- source_hooks (scope& root, const dir_path& d, stage s, bool pre)
+ source_hooks (parser& p, scope& root, const dir_path& d, bool pre)
{
// While we could have used the wildcard pattern matching functionality,
// our needs are pretty basic and performance is quite important, so let's
@@ -286,7 +290,7 @@ namespace build2
fail << "unable to read buildfile " << f << ": " << e;
}
- source_once (root, root, f, root, s);
+ source_once (p, root, root, f, root);
}
}
catch (const system_error& e)
@@ -807,7 +811,10 @@ namespace build2
// root scope multiple time.
//
if (rs.buildfiles.insert (f).second)
- source (rs, rs, f, stage::boot);
+ {
+ parser p (rs.ctx, parser::stage::boot);
+ source (p, rs, rs, f);
+ }
else
l5 ([&]{trace << "skipping already sourced " << f;});
@@ -1038,7 +1045,8 @@ namespace build2
if (root.root_extra == nullptr)
setup_root_extra (root, altn);
- source_hooks (root, d, stage::boot, true /* pre */);
+ parser p (root.ctx, parser::stage::boot);
+ source_hooks (p, root, d, true /* pre */);
}
}
@@ -1050,7 +1058,10 @@ namespace build2
dir_path d (out_root / root.root_extra->bootstrap_dir);
if (exists (d))
- source_hooks (root, d, stage::boot, false /* pre */);
+ {
+ parser p (root.ctx, parser::stage::boot);
+ source_hooks (p, root, d, false /* pre */);
+ }
}
bool
@@ -1274,11 +1285,18 @@ namespace build2
// with a post-bootstrap hook.
//
dir_path hd (out_root / root.root_extra->root_dir);
+
bool he (exists (hd));
+ bool fe (exists (f));
+
+
+ // Reuse the parser to accumulate the configuration variable information.
+ //
+ parser p (root.ctx, parser::stage::root);
- if (he) source_hooks (root, hd, stage::root, true /* pre */);
- if (exists (f)) source_once (root, root, f, root, stage::root);
- if (he) source_hooks (root, hd, stage::root, false /* pre */);
+ if (he) {source_hooks (p, root, hd, true /* pre */); p.reset ();}
+ if (fe) {source_once (p, root, root, f, root);}
+ if (he) {p.reset (); source_hooks (p, root, hd, false /* pre */);}
}
scope&