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authorBoris Kolpackov <boris@codesynthesis.com>2014-12-18 07:14:53 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2014-12-18 07:14:53 +0200
commitc0c85b67516653c181fbce7c61c2df3e31e4edd8 (patch)
tree535467b029b27b190e35064e4babd62825eba6a1 /build
parent835ed5f7080a98e9ee80ac08d5585ccdbb63fe0e (diff)
Initial support for loading dependency info from buildfiles
Also a new iteration on the overall architecture. Now, for the first time, build can read the buildfile and build itself. g++-4.9 -std=c++14 -g -I.. -o bd bd.cxx algorithm.cxx scope.cxx parser.cxx lexer.cxx target.cxx prerequisite.cxx rule.cxx native.cxx cxx/target.cxx cxx/rule.cxx process.cxx timestamp.cxx path.cxx g++-4.9 -std=c++14 -g -I../../.. -o driver driver.cxx ../../../build/lexer.cxx g++-4.9 -std=c++14 -g -I../../.. -o driver driver.cxx ../../../build/lexer.cxx ../../../build/parser.cxx ../../../build/scope.cxx ../../../build/target.cxx ../../../build/native.cxx ../../../build/prerequisite.cxx ../../../build/path.cxx ../../../build/timestamp.cxx
Diffstat (limited to 'build')
-rw-r--r--build/algorithm20
-rw-r--r--build/algorithm.cxx93
-rw-r--r--build/bd.cxx127
-rw-r--r--build/buildfile18
-rw-r--r--build/cxx/rule5
-rw-r--r--build/cxx/rule.cxx116
-rw-r--r--build/cxx/target20
-rw-r--r--build/cxx/target.cxx15
-rw-r--r--build/native10
-rw-r--r--build/native.cxx7
-rw-r--r--build/parser22
-rw-r--r--build/parser.cxx174
-rw-r--r--build/path11
-rw-r--r--build/prerequisite53
-rw-r--r--build/prerequisite.cxx32
-rw-r--r--build/rule.cxx17
-rw-r--r--build/scope59
-rw-r--r--build/scope.cxx12
-rw-r--r--build/target93
-rw-r--r--build/target.cxx25
-rw-r--r--build/utility27
21 files changed, 773 insertions, 183 deletions
diff --git a/build/algorithm b/build/algorithm
new file mode 100644
index 0000000..b67eb1a
--- /dev/null
+++ b/build/algorithm
@@ -0,0 +1,20 @@
+// file : build/algorithm -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BUILD_ALGORITHM
+#define BUILD_ALGORITHM
+
+namespace build
+{
+ class target;
+ class prerequisite;
+
+ target*
+ search (prerequisite&);
+
+ bool
+ match (target&);
+}
+
+#endif // BUILD_ALGORITHM
diff --git a/build/algorithm.cxx b/build/algorithm.cxx
new file mode 100644
index 0000000..fac0bf6
--- /dev/null
+++ b/build/algorithm.cxx
@@ -0,0 +1,93 @@
+// file : build/algorithm.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#include <build/algorithm>
+
+#include <memory> // unique_ptr
+#include <utility> // move
+#include <cassert>
+#include <iostream>
+
+#include <build/path>
+#include <build/scope>
+#include <build/target>
+#include <build/prerequisite>
+#include <build/rule>
+#include <build/diagnostics>
+
+using namespace std;
+
+namespace build
+{
+ target*
+ search (prerequisite& p)
+ {
+ assert (p.target == nullptr);
+
+ //@@ TODO for now we just default to the directory scope.
+ //
+ path d;
+ if (p.directory.absolute ())
+ d = p.directory; // Already normalized.
+ else
+ {
+ d = p.scope.path () / p.directory;
+ d.normalize ();
+ }
+
+ //@@ TODO would be nice to first check if this target is
+ // already in the set before allocating a new instance.
+
+ // Find or insert.
+ //
+ auto r (
+ targets.emplace (
+ unique_ptr<target> (p.type.factory (p.name, move (d)))));
+
+ //if (r.second)
+ // cout << "new target for prerequsite " << p << " " << d << endl;
+
+ return (p.target = r.first->get ());
+ }
+
+ bool
+ match (target& t)
+ {
+ assert (!t.recipe ());
+
+ for (auto tt (&t.type ());
+ tt != nullptr && !t.recipe ();
+ tt = tt->base)
+ {
+ for (auto rs (rules.equal_range (tt->id));
+ rs.first != rs.second;
+ ++rs.first)
+ {
+ const rule& ru (rs.first->second);
+
+ recipe re;
+
+ {
+ auto g (
+ make_exception_guard (
+ [] (target& t)
+ {
+ cerr << "info: while matching a rule for target " << t << endl;
+ },
+ t));
+
+ re = ru.match (t);
+ }
+
+ if (re)
+ {
+ t.recipe (re);
+ break;
+ }
+ }
+ }
+
+ return bool (t.recipe ());
+ }
+}
diff --git a/build/bd.cxx b/build/bd.cxx
index 82d283c..66130b2 100644
--- a/build/bd.cxx
+++ b/build/bd.cxx
@@ -11,8 +11,11 @@
#include <typeinfo>
#include <system_error>
+#include <build/scope>
#include <build/target>
+#include <build/prerequisite>
#include <build/rule>
+#include <build/algorithm>
#include <build/process>
#include <build/diagnostics>
@@ -24,7 +27,7 @@ using namespace std;
namespace build
{
bool
- match (target& t)
+ match_recursive (target& t)
{
// Because we match the target first and then prerequisites,
// any additional dependency information injected by the rule
@@ -32,48 +35,23 @@ namespace build
//
if (!t.recipe ())
{
- for (auto ti (&t.type_id ());
- ti != nullptr && !t.recipe ();
- ti = ti->base)
- {
- for (auto rs (rules.equal_range (ti->id));
- rs.first != rs.second;
- ++rs.first)
- {
- const rule& ru (rs.first->second);
-
- recipe re;
-
- {
- auto g (
- make_exception_guard (
- [] (target& t)
- {
- cerr << "info: while matching a rule for target " << t << endl;
- },
- t));
-
- re = ru.match (t);
- }
-
- if (re)
- {
- t.recipe (re);
- break;
- }
- }
- }
-
- if (!t.recipe ())
+ if (!match (t))
{
cerr << "error: no rule to update target " << t << endl;
return false;
}
}
- for (target& p: t.prerequisites ())
+ for (prerequisite& p: t.prerequisites)
{
- if (!match (p))
+ // Resolve prerequisite to target (prerequisite search). We
+ // do this after matching since the rule can alter search
+ // paths.
+ //
+ if (p.target == nullptr)
+ search (p);
+
+ if (!match_recursive (*p.target))
{
cerr << "info: required by " << t << endl;
return false;
@@ -90,11 +68,13 @@ namespace build
target_state ts;
- for (target& p: t.prerequisites ())
+ for (prerequisite& p: t.prerequisites)
{
- if (p.state () == target_state::unknown)
+ target& pt (*p.target);
+
+ if (pt.state () == target_state::unknown)
{
- p.state ((ts = update (p)));
+ pt.state ((ts = update (pt)));
if (ts == target_state::failed)
return ts;
@@ -119,6 +99,25 @@ namespace build
t.state (ts);
return ts;
}
+
+ void
+ dump ()
+ {
+ for (const auto& pt: targets)
+ {
+ target& t (*pt);
+
+ cout << t << ':';
+
+ for (const auto& p: t.prerequisites)
+ {
+ cout << ' ' << p;
+ }
+
+ cout << endl;
+ }
+ }
+
}
#include <build/native>
@@ -136,6 +135,18 @@ main (int argc, char* argv[])
//
tzset ();
+ // Register target types.
+ //
+ target_types.insert (file::static_type);
+
+ target_types.insert (exe::static_type);
+ target_types.insert (obj::static_type);
+
+ target_types.insert (cxx::cxx::static_type);
+ target_types.insert (cxx::hxx::static_type);
+ target_types.insert (cxx::ixx::static_type);
+ target_types.insert (cxx::txx::static_type);
+
// Parse buildfile.
//
path bf ("buildfile");
@@ -148,11 +159,11 @@ main (int argc, char* argv[])
}
ifs.exceptions (ifstream::failbit | ifstream::badbit);
- parser p;
+ parser p (cerr);
try
{
- p.parse (ifs, bf);
+ p.parse (ifs, bf, scopes[path::current ()]);
}
catch (const lexer_error&)
{
@@ -168,8 +179,7 @@ main (int argc, char* argv[])
return 1;
}
- return 0;
-
+ dump ();
// Register rules.
//
@@ -182,38 +192,35 @@ main (int argc, char* argv[])
default_path_rule path_exists;
rules.emplace (typeid (path_target), path_exists);
+ // Build.
//
- //
- using namespace build::cxx;
-
- exe bd ("bd");
- obj bd_o ("bd");
- bd.prerequisite (bd_o);
-
- cxx::cxx bd_cxx ("bd");
- bd_cxx.path (path ("bd.cxx"));
-
- bd_o.prerequisite (bd_cxx);
+ if (default_target == nullptr)
+ {
+ cerr << "error: no default target" << endl;
+ return 1;
+ }
- //
- //
try
{
- if (!match (bd))
+ target& d (*default_target);
+
+ if (!match_recursive (d))
return 1; // Diagnostics has already been issued.
- switch (update (bd))
+ //dump ();
+
+ switch (update (d))
{
case target_state::uptodate:
{
- cerr << "info: target " << bd << " is up to date" << endl;
+ cerr << "info: target " << d << " is up to date" << endl;
break;
}
case target_state::updated:
break;
case target_state::failed:
{
- cerr << "error: failed to update target " << bd << endl;
+ cerr << "error: failed to update target " << d << endl;
return 1;
}
case target_state::unknown:
diff --git a/build/buildfile b/build/buildfile
index ceed236..4e9aaa2 100644
--- a/build/buildfile
+++ b/build/buildfile
@@ -1 +1,17 @@
-exe{bd}: obj{bd target}
+exe{bd}: obj{bd algorithm scope parser lexer target prerequisite rule \
+ native cxx/target cxx/rule process timestamp path}
+
+obj{bd}: cxx{bd}
+obj{algorithm}: cxx{algorithm}
+obj{scope}: cxx{scope}
+obj{parser}: cxx{parser}
+obj{lexer}: cxx{lexer}
+obj{target}: cxx{target}
+obj{prerequisite}: cxx{prerequisite}
+obj{rule}: cxx{rule}
+obj{native}: cxx{native}
+obj{cxx/target}: cxx{cxx/target}
+obj{cxx/rule}: cxx{cxx/rule}
+obj{process}: cxx{process}
+obj{timestamp}: cxx{timestamp}
+obj{path}: cxx{path}
diff --git a/build/cxx/rule b/build/cxx/rule
index 4900180..99e688d 100644
--- a/build/cxx/rule
+++ b/build/cxx/rule
@@ -12,12 +12,13 @@
namespace build
{
+ class scope;
+
namespace cxx
{
// @@ Can't we do match(obj&) and then registration code extracts
// that. And no virtuals.
//
-
class compile: public rule
{
public:
@@ -29,7 +30,7 @@ namespace build
private:
void
- inject_prerequisites (obj&, const cxx&) const;
+ inject_prerequisites (obj&, const cxx&, scope&) const;
};
class link: public rule
diff --git a/build/cxx/rule.cxx b/build/cxx/rule.cxx
index ccc9bb5..3cab2d4 100644
--- a/build/cxx/rule.cxx
+++ b/build/cxx/rule.cxx
@@ -12,6 +12,8 @@
#include <ext/stdio_filebuf.h>
+#include <build/scope>
+#include <build/algorithm>
#include <build/process>
#include <build/timestamp>
#include <build/diagnostics>
@@ -45,26 +47,47 @@ namespace build
// See if we have a source file.
//
- const cxx* s (nullptr);
- for (const target& p: t.prerequisites ())
+ prerequisite* sp (nullptr);
+ for (prerequisite& p: t.prerequisites)
{
- if ((s = dynamic_cast<const cxx*> (&p)) != nullptr)
+ if (p.type.id == typeid (cxx))
+ {
+ sp = &p;
break;
+ }
}
- if (s == nullptr)
+ if (sp == nullptr)
+ {
+ cout << "no source file" << endl;
return recipe ();
+ }
// Derive object file name from target name.
//
obj& o (dynamic_cast<obj&> (t));
if (o.path ().empty ())
- o.path (path (o.name () + ".o"));
+ o.path (o.directory / path (o.name + ".o"));
- // Inject additional prerequisites.
+ // Resolve prerequisite to target and match it to a rule. We need
+ // this in order to get the source file path for prerequisite
+ // injections.
//
- inject_prerequisites (o, *s);
+ cxx* st (
+ dynamic_cast<cxx*> (
+ sp->target != nullptr ? sp->target : search (*sp)));
+
+ if (st != nullptr)
+ {
+ if (st->recipe () || build::match (*st))
+ {
+ // Don't bother if the file does not exist.
+ //
+ if (st->mtime () != timestamp_nonexistent)
+ inject_prerequisites (o, *st, sp->scope);
+ }
+ }
return recipe (&update);
}
@@ -112,13 +135,13 @@ namespace build
}
void compile::
- inject_prerequisites (obj& o, const cxx& s) const
+ inject_prerequisites (obj& o, const cxx& s, scope& ds) const
{
const char* args[] = {
"g++-4.9",
"-std=c++14",
"-I..",
- "-M",
+ "-MM", //@@ TMP -M
"-MG", // Treat missing headers as generated.
"-MQ", "*", // Quoted target (older version can't handle empty name).
s.path ().string ().c_str (),
@@ -142,7 +165,7 @@ namespace build
throw error ();
}
- size_t p (0);
+ size_t pos (0);
if (first)
{
@@ -153,28 +176,47 @@ namespace build
break;
assert (l[0] == '*' && l[1] == ':' && l[2] == ' ');
- next (l, (p = 3)); // Skip the source file.
+ next (l, (pos = 3)); // Skip the source file.
first = false;
}
- while (p != l.size ())
+ while (pos != l.size ())
{
- path d (next (l, p));
+ path file (next (l, pos));
+ file.normalize ();
- // If there is no extension (e.g., std C++ headers), then
- // assume it is a header. Otherwise, let the normall
- // mechanism to figure the type from the extension.
+ // If there is no extension (e.g., standard C++ headers),
+ // then assume it is a header. Otherwise, let the standard
+ // mechanism derive the type from the extension.
//
// @@ TODO:
//
- // - memory leak
- hxx& h (*new hxx (d.leaf ().base ().string ()));
- h.path (d);
+ // Split the name into its directory part and the name part.
+ // Here we assume the name part is a valid filesystem name.
+ //
+ path d (file.directory ());
+ string n (file.leaf ().base ().string ());
+
+ // Find or insert.
+ //
+ auto r (ds.prerequisites.emplace (
+ hxx::static_type, move (n), move (d), ds));
+
+ auto& p (const_cast<prerequisite&> (*r.first));
+
+ // Resolve to target so that we can assign its path.
+ //
+ path_target& t (
+ dynamic_cast<path_target&> (
+ p.target != nullptr ? *p.target : *search (p)));
- o.prerequisite (h);
+ if (t.path ().empty ())
+ t.path (file);
+
+ o.prerequisites.push_back (p);
}
}
@@ -208,14 +250,16 @@ namespace build
bool u (mt == timestamp_nonexistent);
const cxx* s (nullptr);
- for (const target& p: t.prerequisites ())
+ for (const prerequisite& p: t.prerequisites)
{
+ const target& pt (*p.target);
+
// Assume all our prerequisites are mtime-based (checked in
// match()).
//
if (!u)
{
- const auto& mtp (dynamic_cast<const mtime_target&> (p));
+ const auto& mtp (dynamic_cast<const mtime_target&> (pt));
timestamp mp (mtp.mtime ());
// What do we do if timestamps are equal? This can happen, for
@@ -229,7 +273,7 @@ namespace build
}
if (s == nullptr)
- s = dynamic_cast<const cxx*> (&p);
+ s = dynamic_cast<const cxx*> (&pt);
if (u && s != nullptr)
break;
@@ -241,6 +285,7 @@ namespace build
const char* args[] = {
"g++-4.9",
"-std=c++14",
+ "-g",
"-I..",
"-c",
"-o", o.path ().string ().c_str (),
@@ -300,14 +345,17 @@ namespace build
// See if we have at least one object file.
//
- const obj* o (nullptr);
- for (const target& p: t.prerequisites ())
+ prerequisite* op (nullptr);
+ for (prerequisite& p: t.prerequisites)
{
- if ((o = dynamic_cast<const obj*> (&p)) != nullptr)
+ if (p.type.id == typeid (obj))
+ {
+ op = &p;
break;
+ }
}
- if (o == nullptr)
+ if (op == nullptr)
return recipe ();
// Derive executable file name from target name.
@@ -315,7 +363,7 @@ namespace build
exe& e (dynamic_cast<exe&> (t));
if (e.path ().empty ())
- e.path (path (e.name ()));
+ e.path (e.directory / path (e.name));
return recipe (&update);
}
@@ -333,12 +381,14 @@ namespace build
bool u (mt == timestamp_nonexistent);
- for (const target& p: t.prerequisites ())
+ for (const prerequisite& p: t.prerequisites)
{
+ const target& pt (*p.target);
+
// Assume all our prerequisites are mtime-based (checked in
// match()).
//
- const auto& mtp (dynamic_cast<const mtime_target&> (p));
+ const auto& mtp (dynamic_cast<const mtime_target&> (pt));
timestamp mp (mtp.mtime ());
// What do we do if timestamps are equal? This can happen, for
@@ -357,13 +407,13 @@ namespace build
if (!u)
return target_state::uptodate;
- vector<const char*> args {"g++-4.9", "-std=c++14", "-o"};
+ vector<const char*> args {"g++-4.9", "-std=c++14", "-g", "-o"};
args.push_back (e.path ().string ().c_str ());
- for (const target& p: t.prerequisites ())
+ for (const prerequisite& p: t.prerequisites)
{
- const obj& o (dynamic_cast<const obj&> (p));
+ const obj& o (dynamic_cast<const obj&> (*p.target));
args.push_back (o.path ().string ().c_str ());
}
diff --git a/build/cxx/target b/build/cxx/target
index fe17c36..37b093b 100644
--- a/build/cxx/target
+++ b/build/cxx/target
@@ -16,8 +16,9 @@ namespace build
public:
using file::file;
- public: virtual const type_info& type_id () const {return ti_;}
- protected: static const type_info ti_;
+ public:
+ virtual const target_type& type () const {return static_type;}
+ static const target_type static_type;
};
class ixx: public file
@@ -25,8 +26,9 @@ namespace build
public:
using file::file;
- public: virtual const type_info& type_id () const {return ti_;}
- protected: static const type_info ti_;
+ public:
+ virtual const target_type& type () const {return static_type;}
+ static const target_type static_type;
};
class txx: public file
@@ -34,8 +36,9 @@ namespace build
public:
using file::file;
- public: virtual const type_info& type_id () const {return ti_;}
- protected: static const type_info ti_;
+ public:
+ virtual const target_type& type () const {return static_type;}
+ static const target_type static_type;
};
class cxx: public file
@@ -43,8 +46,9 @@ namespace build
public:
using file::file;
- public: virtual const type_info& type_id () const {return ti_;}
- protected: static const type_info ti_;
+ public:
+ virtual const target_type& type () const {return static_type;}
+ static const target_type static_type;
};
}
}
diff --git a/build/cxx/target.cxx b/build/cxx/target.cxx
index 7171e30..c4502b4 100644
--- a/build/cxx/target.cxx
+++ b/build/cxx/target.cxx
@@ -10,11 +10,16 @@ namespace build
{
namespace cxx
{
- using type_info = target::type_info;
+ const target_type hxx::static_type {
+ typeid (hxx), "hxx", &file::static_type, &target_factory<hxx>};
- const type_info hxx::ti_ {typeid (hxx), "hxx", &file::ti_};
- const type_info ixx::ti_ {typeid (ixx), "ixx", &file::ti_};
- const type_info txx::ti_ {typeid (txx), "txx", &file::ti_};
- const type_info cxx::ti_ {typeid (cxx), "cxx", &file::ti_};
+ const target_type ixx::static_type {
+ typeid (ixx), "ixx", &file::static_type, &target_factory<ixx>};
+
+ const target_type txx::static_type {
+ typeid (txx), "txx", &file::static_type, &target_factory<txx>};
+
+ const target_type cxx::static_type {
+ typeid (cxx), "cxx", &file::static_type, &target_factory<cxx>};
}
}
diff --git a/build/native b/build/native
index 29ad653..6107705 100644
--- a/build/native
+++ b/build/native
@@ -14,8 +14,9 @@ namespace build
public:
using file::file;
- public: virtual const type_info& type_id () const {return ti_;}
- protected: static const type_info ti_;
+ public:
+ virtual const target_type& type () const {return static_type;}
+ static const target_type static_type;
};
class obj: public file
@@ -23,8 +24,9 @@ namespace build
public:
using file::file;
- public: virtual const type_info& type_id () const {return ti_;}
- protected: static const type_info ti_;
+ public:
+ virtual const target_type& type () const {return static_type;}
+ static const target_type static_type;
};
}
diff --git a/build/native.cxx b/build/native.cxx
index 6130578..61ecb72 100644
--- a/build/native.cxx
+++ b/build/native.cxx
@@ -8,8 +8,9 @@ using namespace std;
namespace build
{
- using type_info = target::type_info;
+ const target_type exe::static_type {
+ typeid (exe), "exe", &file::static_type, &target_factory<exe>};
- const type_info exe::ti_ {typeid (exe), "exe", &file::ti_};
- const type_info obj::ti_ {typeid (obj), "obj", &file::ti_};
+ const target_type obj::static_type {
+ typeid (obj), "obj", &file::static_type, &target_factory<obj>};
}
diff --git a/build/parser b/build/parser
index c487015..e8e7314 100644
--- a/build/parser
+++ b/build/parser
@@ -8,12 +8,16 @@
#include <string>
#include <vector>
#include <iosfwd>
+#include <utility> // std::move
#include <exception>
+
#include <build/path>
namespace build
{
+ class scope;
+
class token;
enum class token_type;
class lexer;
@@ -28,12 +32,21 @@ namespace build
parser (std::ostream& diag): diag_ (diag) {}
void
- parse (std::istream&, const path&);
+ parse (std::istream&, const path&, scope&);
// Recursive descent parser.
//
private:
- typedef std::vector<std::string> names;
+ struct name_type
+ {
+ name_type (std::string t, std::string n)
+ : type (std::move (t)), name (std::move (n)) {}
+
+ std::string type; // Empty if untyped.
+ std::string name;
+ };
+
+ typedef std::vector<name_type> names;
void
parse_clause (token&, token_type&);
@@ -42,12 +55,12 @@ namespace build
parse_names (token& t, token_type& tt)
{
names ns;
- parse_names (t, tt, ns);
+ parse_names (t, tt, ns, nullptr);
return ns;
}
void
- parse_names (token&, token_type&, names&);
+ parse_names (token&, token_type&, names&, const std::string* type);
// Utilities.
//
@@ -63,6 +76,7 @@ namespace build
lexer* lexer_;
const path* path_;
+ scope* scope_;
};
}
diff --git a/build/parser.cxx b/build/parser.cxx
index 348d285..e300201 100644
--- a/build/parser.cxx
+++ b/build/parser.cxx
@@ -4,11 +4,16 @@
#include <build/parser>
+#include <memory> // unique_ptr
#include <iostream>
#include <build/token>
#include <build/lexer>
+#include <build/scope>
+#include <build/target>
+#include <build/prerequisite>
+
using namespace std;
namespace build
@@ -21,11 +26,12 @@ namespace build
typedef token_type type;
void parser::
- parse (istream& is, const path& p)
+ parse (istream& is, const path& p, scope& s)
{
lexer l (is, p.string (), diag_);
lexer_ = &l;
path_ = &p;
+ scope_ = &s;
token t (type::eos, 0, 0);
type tt;
@@ -50,7 +56,7 @@ namespace build
if (tt != type::name && tt != type::lcbrace)
break; // Something else. Let our caller handle that.
- names ns (parse_names (t, tt));
+ names tns (parse_names (t, tt));
if (tt == type::colon)
{
@@ -60,7 +66,127 @@ namespace build
//
if (tt == type::name || tt == type::lcbrace)
{
- names ns (parse_names (t, tt));
+ names pns (parse_names (t, tt));
+
+ // Prepare the prerequisite list.
+ //
+ target::prerequisites_type ps;
+ ps.reserve (pns.size ());
+
+ for (auto& pn: pns)
+ {
+ // Resolve prerequisite type.
+ //
+ //@@ TODO: derive type from extension, factor to common function
+ //
+ const char* tt (pn.type.empty () ? "file" : pn.type.c_str ());
+
+ auto i (target_types.find (tt));
+
+ if (i == target_types.end ())
+ {
+ //@@ TODO name (or better yet, type) location
+
+ error (t) << "unknown prerequisite type '" << tt << "'" << endl;
+ throw parser_error ();
+ }
+
+ const target_type& ti (i->second);
+
+ // We need to split the name into its directory part (if any)
+ // and the name part. We cannot assume the name part is a
+ // valid filesystem name so we will have to do the splitting
+ // manually.
+ //
+ path d;
+ string n;
+
+ {
+ path::size_type i (path::traits::rfind_separator (pn.name));
+
+ if (i == string::npos)
+ n = move (pn.name); // NOTE: steal!
+ else
+ {
+ d = path (pn.name, i);
+ n.assign (pn.name, i + 1, string::npos);
+ d.normalize ();
+ }
+ }
+
+ //cout << "prerequisite " << tt << " " << n << " " << d << endl;
+
+ // Find or insert.
+ //
+ auto r (scope_->prerequisites.emplace (
+ ti, move (n), move (d), *scope_));
+
+ ps.push_back (const_cast<prerequisite&> (*r.first));
+ }
+
+ for (auto& tn: tns)
+ {
+ path d;
+ string n;
+
+ // The same deal as in handling prerequisites above.
+ //
+ {
+ path::size_type i (path::traits::rfind_separator (tn.name));
+
+ if (i == string::npos)
+ {
+ d = scope_->path (); // Already normalized.
+ n = move (tn.name); // NOTE: steal!
+ }
+ else
+ {
+ d = path (tn.name, i);
+ n.assign (tn.name, i + 1, string::npos);
+
+ if (d.relative ())
+ d = scope_->path () / d;
+
+ d.normalize ();
+ }
+ }
+
+ // Resolve target type.
+ //
+ //@@ TODO: derive type from extension
+ //
+ const char* tt (tn.type.empty () ? "file" : tn.type.c_str ());
+
+ auto i (target_types.find (tt));
+
+ if (i == target_types.end ())
+ {
+ //@@ TODO name (or better yet, type) location
+
+ error (t) << "unknown target type '" << tt << "'" << endl;
+ throw parser_error ();
+ }
+
+ const target_type& ti (i->second);
+
+ //@@ TODO would be nice to first check if this target is
+ // already in the set before allocating a new instance.
+
+ //cout << "target " << tt << " " << n << " " << d << endl;
+
+ // Find or insert.
+ //
+ auto r (
+ targets.emplace (
+ unique_ptr<target> (ti.factory (move (n), move (d)))));
+
+ target& t (**r.first);
+
+ t.prerequisites = ps; //@@ TODO: move is last target.
+
+ if (default_target == nullptr)
+ default_target = &t;
+ }
if (tt == type::newline)
next (t, tt);
@@ -88,14 +214,14 @@ namespace build
}
// See if this is a directory or target scope. Different
- // things can appear inside depending on which it is.
+ // things can appear inside depending on which one it is.
//
bool dir (false);
- for (const auto& n: ns)
+ for (const auto& n: tns)
{
- if (n.back () == '/')
+ if (n.type.empty () && n.name.back () == '/')
{
- if (ns.size () != 1)
+ if (tns.size () != 1)
{
// @@ TODO: point to name.
//
@@ -110,9 +236,21 @@ namespace build
next (t, tt);
if (dir)
+ {
+ scope& prev (*scope_);
+ path p (tns[0].name);
+
+ if (p.relative ())
+ p = prev.path () / p;
+
+ scope_ = &scopes[p];
+
// A directory scope can contain anything that a top level can.
//
parse_clause (t, tt);
+
+ scope_ = &prev;
+ }
else
{
// @@ TODO: target scope.
@@ -151,7 +289,7 @@ namespace build
}
void parser::
- parse_names (token& t, type& tt, names& ns)
+ parse_names (token& t, type& tt, names& ns, const string* tp)
{
for (bool first (true);; first = false)
{
@@ -160,7 +298,7 @@ namespace build
if (tt == type::lcbrace)
{
next (t, tt);
- parse_names (t, tt, ns);
+ parse_names (t, tt, ns, tp);
if (tt != type::rcbrace)
{
@@ -176,20 +314,20 @@ namespace build
//
if (tt == type::name)
{
- string name (t.name ());
+ string name (t.name ()); //@@ move?
// See if this is a type name, that is, it is followed by '{'.
//
if (next (t, tt) == type::lcbrace)
{
- //cout << "type: " << name << endl;
+ if (tp != nullptr)
+ {
+ error (t) << "nested type name '" << name << "'" << endl;
+ throw parser_error ();
+ }
- //@@ TODO:
- //
- // - detect nested typed name groups, e.g., 'cxx{hxx{foo}}'.
- //
next (t, tt);
- parse_names (t, tt, ns);
+ parse_names (t, tt, ns, &name);
if (tt != type::rcbrace)
{
@@ -201,9 +339,7 @@ namespace build
continue;
}
- // This is a target, directory, or variable name.
- //cout << "name: " << name << endl;
- ns.push_back (name);
+ ns.emplace_back ((tp != nullptr ? *tp : string ()), move (name));
continue;
}
diff --git a/build/path b/build/path
index 97fb154..bdb9b72 100644
--- a/build/path
+++ b/build/path
@@ -7,6 +7,7 @@
#include <string>
#include <ostream>
+#include <utility> // move
#include <exception>
namespace build
@@ -168,8 +169,14 @@ namespace build
}
explicit
- basic_path (string_type const& s)
- : path_ (s)
+ basic_path (string_type s)
+ : path_ (std::move (s))
+ {
+ init ();
+ }
+
+ basic_path (const string_type& s, size_type n)
+ : path_ (s, 0, n)
{
init ();
}
diff --git a/build/prerequisite b/build/prerequisite
new file mode 100644
index 0000000..e58532d
--- /dev/null
+++ b/build/prerequisite
@@ -0,0 +1,53 @@
+// file : build/prerequisite -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BUILD_PREREQUISITE
+#define BUILD_PREREQUISITE
+
+#include <set>
+#include <string>
+#include <iosfwd>
+#include <utility> // move
+#include <typeindex>
+
+#include <build/path>
+
+namespace build
+{
+ class scope;
+ class target;
+ class target_type;
+
+ class prerequisite
+ {
+ public:
+ typedef build::target target_type;
+ typedef build::target_type target_type_type;
+ typedef build::scope scope_type;
+
+ prerequisite (const target_type_type& t,
+ std::string n,
+ path d,
+ scope_type& s)
+ : type (t), name (std::move (n)), directory (std::move (d)),
+ scope (s), target (0) {}
+
+ public:
+ const target_type_type& type;
+ const std::string name;
+ const path directory; // Normalized absolute or relative (to scope).
+ scope_type& scope;
+ target_type* target; // NULL if not yet resolved.
+ };
+
+ std::ostream&
+ operator<< (std::ostream&, const prerequisite&);
+
+ bool
+ operator< (const prerequisite&, const prerequisite&);
+
+ typedef std::set<prerequisite> prerequisite_set;
+}
+
+#endif // BUILD_PREREQUISITE
diff --git a/build/prerequisite.cxx b/build/prerequisite.cxx
new file mode 100644
index 0000000..8153a6c
--- /dev/null
+++ b/build/prerequisite.cxx
@@ -0,0 +1,32 @@
+// file : build/prerequisite.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#include <build/prerequisite>
+
+#include <ostream>
+
+#include <build/target> // target_type
+
+using namespace std;
+
+namespace build
+{
+ ostream&
+ operator<< (ostream& os, const prerequisite& p)
+ {
+ // @@ TODO: need to come up with a relative (to current) path.
+
+ return os << p.type.name << '{' << p.name << '}';
+ }
+
+ bool
+ operator< (const prerequisite& x, const prerequisite& y)
+ {
+ return
+ (x.type.id < y.type.id) ||
+ (x.type.id == y.type.id && x.name < y.name) ||
+ (x.type.id == y.type.id && x.name == y.name &&
+ x.directory < y.directory);
+ }
+}
diff --git a/build/rule.cxx b/build/rule.cxx
index fe4c4b2..b1730e1 100644
--- a/build/rule.cxx
+++ b/build/rule.cxx
@@ -26,6 +26,11 @@ namespace build
path_target& pt (dynamic_cast<path_target&> (t));
+ // @@ TMP: derive file name by appending target name as an extension.
+ //
+ if (pt.path ().empty ())
+ pt.path (t.directory / path (pt.name + '.' + pt.type ().name));
+
return pt.mtime () != timestamp_nonexistent ? &update : nullptr;
}
@@ -37,16 +42,18 @@ namespace build
path_target& pt (dynamic_cast<path_target&> (t));
timestamp mt (pt.mtime ());
- for (const target& p: t.prerequisites ())
+ for (const prerequisite& p: t.prerequisites)
{
+ const target& pt (*p.target); // Should be resolved at this stage.
+
// If this is an mtime-based target, then simply compare timestamps.
//
- if (auto mtp = dynamic_cast<const mtime_target*> (&p))
+ if (auto mtp = dynamic_cast<const mtime_target*> (&pt))
{
if (mt < mtp->mtime ())
{
cerr << "error: no rule to update target " << t << endl
- << "info: prerequisite " << p << " is ahead of " << t <<
+ << "info: prerequisite " << pt << " is ahead of " << t <<
" by " << (mtp->mtime () - mt) << endl;
return target_state::failed;
@@ -56,10 +63,10 @@ namespace build
{
// Otherwise we assume the prerequisite is newer if it was updated.
//
- if (p.state () == target_state::updated)
+ if (pt.state () == target_state::updated)
{
cerr << "error: no rule to update target " << t << endl
- << "info: prerequisite " << p << " is ahead of " << t <<
+ << "info: prerequisite " << pt << " is ahead of " << t <<
" because it was updated" << endl;
return target_state::failed;
diff --git a/build/scope b/build/scope
new file mode 100644
index 0000000..760fc03
--- /dev/null
+++ b/build/scope
@@ -0,0 +1,59 @@
+// file : build/scope -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BUILD_SCOPE
+#define BUILD_SCOPE
+
+#include <map>
+
+#include <build/path>
+#include <build/prerequisite>
+
+namespace build
+{
+ class scope
+ {
+ public:
+ typedef build::path path_type;
+
+ const path_type&
+ path () const {return i_->first;} // Absolute and normalized.
+
+ private:
+ friend class scope_map;
+
+ typedef std::map<path_type, scope>::const_iterator iterator;
+
+ scope () = default;
+
+ void
+ init (const iterator& i) {i_ = i;}
+
+ public:
+ prerequisite_set prerequisites;
+
+ private:
+ iterator i_;
+ };
+
+ class scope_map: std::map<path, scope>
+ {
+ public:
+ scope&
+ operator[] (const path& k)
+ {
+ auto i (emplace (k, scope ()));
+ auto& r (i.first->second);
+
+ if (i.second)
+ r.init (i.first);
+
+ return r;
+ }
+ };
+
+ extern scope_map scopes;
+}
+
+#endif // BUILD_SCOPE
diff --git a/build/scope.cxx b/build/scope.cxx
new file mode 100644
index 0000000..0f99b0e
--- /dev/null
+++ b/build/scope.cxx
@@ -0,0 +1,12 @@
+// file : build/scope.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#include <build/scope>
+
+using namespace std;
+
+namespace build
+{
+ scope_map scopes;
+}
diff --git a/build/target b/build/target
index 01cddc4..a381fd0 100644
--- a/build/target
+++ b/build/target
@@ -5,8 +5,11 @@
#ifndef BUILD_TARGET
#define BUILD_TARGET
+#include <set>
+#include <map>
#include <string>
#include <vector>
+#include <memory> // unique_ptr
#include <functional> // function, reference_wrapper
#include <typeindex>
#include <iosfwd>
@@ -15,6 +18,8 @@
#include <build/path>
#include <build/timestamp>
+#include <build/prerequisite>
+#include <build/utility> // compare_c_string, compare_pointer_target
namespace build
{
@@ -23,24 +28,29 @@ namespace build
enum class target_state {unknown, uptodate, updated, failed};
typedef std::function<target_state (target&)> recipe;
- typedef std::vector<std::reference_wrapper<target>> targets;
+ struct target_type
+ {
+ std::type_index id;
+ const char* name;
+ const target_type* base;
+ target* (*const factory) (std::string, path);
+ };
class target
{
public:
- target (std::string n): name_ (std::move (n)) {}
-
- const std::string&
- name () const {return name_;}
+ target (std::string n, path d)
+ : name (std::move (n)), directory (std::move (d)) {}
- const targets&
- prerequisites () const {return prerequisites_;}
+ const std::string name;
+ const path directory; // Absolute and normalized.
- targets&
- prerequisites () {return prerequisites_;}
+ public:
+ typedef
+ std::vector<std::reference_wrapper<prerequisite>>
+ prerequisites_type;
- void
- prerequisite (target& t) {prerequisites_.push_back (t);}
+ prerequisites_type prerequisites;
public:
typedef build::recipe recipe_type;
@@ -63,22 +73,10 @@ namespace build
target& operator= (const target&) = delete;
public:
- struct type_info
- {
- std::type_index id;
- const char* name;
- const type_info* base;
- };
-
- virtual const type_info&
- type_id () const = 0;
-
- protected:
- static const type_info ti_;
+ virtual const target_type& type () const = 0;
+ static const target_type static_type;
private:
- std::string name_;
- targets prerequisites_;
recipe_type recipe_;
target_state state_ {target_state::unknown};
};
@@ -86,6 +84,40 @@ namespace build
std::ostream&
operator<< (std::ostream&, const target&);
+ inline bool
+ operator< (const target& x, const target& y)
+ {
+ std::type_index tx (typeid (x)), ty (typeid (y));
+
+ return
+ (tx < ty) ||
+ (tx == ty && x.name < y.name) ||
+ (tx == ty && x.name == y.name && x.directory < y.directory);
+ }
+
+ typedef std::set<std::unique_ptr<target>, compare_pointer_target> target_set;
+ extern target_set targets;
+ extern target* default_target;
+
+ class target_type_map: public std::map<
+ const char*,
+ std::reference_wrapper<const target_type>,
+ compare_c_string>
+ {
+ public:
+ void
+ insert (const target_type& tt) {emplace (tt.name, tt);}
+ };
+
+ extern target_type_map target_types;
+
+ template <typename T>
+ target*
+ target_factory (std::string n, path d)
+ {
+ return new T (std::move (n), std::move (d));
+ }
+
// Modification time-based target.
//
class mtime_target: public target
@@ -109,7 +141,8 @@ namespace build
virtual timestamp
load_mtime () const = 0;
- protected: static const type_info ti_;
+ public:
+ static const target_type static_type;
private:
mutable timestamp mtime_ {timestamp_unknown};
@@ -134,7 +167,8 @@ namespace build
virtual timestamp
load_mtime () const;
- protected: static const type_info ti_;
+ public:
+ static const target_type static_type;
private:
path_type path_;
@@ -147,8 +181,9 @@ namespace build
public:
using path_target::path_target;
- public: virtual const type_info& type_id () const {return ti_;}
- protected: static const type_info ti_;
+ public:
+ virtual const target_type& type () const {return static_type;}
+ static const target_type static_type;
};
}
diff --git a/build/target.cxx b/build/target.cxx
index e3e3d4d..8314ba4 100644
--- a/build/target.cxx
+++ b/build/target.cxx
@@ -15,9 +15,15 @@ namespace build
ostream&
operator<< (ostream& os, const target& t)
{
- return os << t.type_id ().name << '{' << t.name () << '}';
+ // @@ TODO: need to come up with a relative (to current) path.
+
+ return os << t.type ().name << '{' << t.name << '}';
}
+ target_set targets;
+ target* default_target = nullptr;
+ target_type_map target_types;
+
// path_target
//
timestamp path_target::
@@ -27,12 +33,15 @@ namespace build
return path_mtime (path_);
}
- using type_info = target::type_info;
+ const target_type target::static_type {
+ typeid (target), "target", nullptr, nullptr};
+
+ const target_type mtime_target::static_type {
+ typeid (mtime_target), "mtime_target", &target::static_type, nullptr};
+
+ const target_type path_target::static_type {
+ typeid (path_target), "path_target", &mtime_target::static_type, nullptr};
- const type_info target::ti_ {typeid (target), "target", nullptr};
- const type_info mtime_target::ti_ {
- typeid (mtime_target), "mtime_target", &target::ti_};
- const type_info path_target::ti_ {
- typeid (path_target), "path_target", &mtime_target::ti_};
- const type_info file::ti_ {typeid (file), "file", &path_target::ti_};
+ const target_type file::static_type {
+ typeid (file), "file", &path_target::static_type, &target_factory<file>};
}
diff --git a/build/utility b/build/utility
new file mode 100644
index 0000000..bef6335
--- /dev/null
+++ b/build/utility
@@ -0,0 +1,27 @@
+// file : build/utility -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BUILD_UTILITY
+#define BUILD_UTILITY
+
+#include <cstring> // strcmp
+
+namespace build
+{
+ struct compare_c_string
+ {
+ bool operator() (const char* x, const char* y) const
+ {
+ return std::strcmp (x, y) < 0;
+ }
+ };
+
+ struct compare_pointer_target
+ {
+ template <typename P>
+ bool operator() (const P& x, const P& y) const {return *x < *y;}
+ };
+}
+
+#endif // BUILD_UTILITY