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-rw-r--r--build/cli/rule.cxx312
1 files changed, 312 insertions, 0 deletions
diff --git a/build/cli/rule.cxx b/build/cli/rule.cxx
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--- /dev/null
+++ b/build/cli/rule.cxx
@@ -0,0 +1,312 @@
+// file : build/cli/rule.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <build/cli/rule>
+
+#include <butl/process>
+
+#include <build/scope>
+#include <build/target>
+#include <build/algorithm>
+#include <build/diagnostics>
+
+#include <build/cli/target>
+
+#include <build/config/utility>
+
+using namespace std;
+using namespace butl;
+
+namespace build
+{
+ namespace cli
+ {
+ using config::append_options;
+
+ void* compile::
+ match (action a, target& xt, const std::string&) const
+ {
+ tracer trace ("cli::compile::match");
+
+ if (cli_cxx* pt = xt.is_a<cli_cxx> ())
+ {
+ cli_cxx& t (*pt);
+
+ // See if we have a .cli source file.
+ //
+ prerequisite* r (nullptr);
+ for (prerequisite& p: group_prerequisites (t))
+ {
+ if (p.is_a<cli> ())
+ {
+ //@@ Need to verify input and output stems match.
+ r = &p;
+ break;
+ }
+ }
+
+ if (r == nullptr)
+ {
+ level3 ([&]{trace << "no .cli source file for target " << t;});
+ return nullptr;
+ }
+
+ // If we still haven't figured out the member list, we can do
+ // that now. Specifically, at this stage no further changes to
+ // cli.options are possible and we can determine whether the
+ // --suppress-inline option is present.
+ //
+ if (t.h () == nullptr)
+ {
+ cxx::hxx& h (search<cxx::hxx> (t.dir, t.name, nullptr, nullptr));
+ h.group = &t;
+ t.h (h);
+
+ cxx::cxx& c (search<cxx::cxx> (t.dir, t.name, nullptr, nullptr));
+ c.group = &t;
+ t.c (c);
+
+ bool inl (true);
+ if (auto val = t["cli.options"])
+ {
+ for (const name& n: val.template as<const list_value&> ())
+ {
+ if (n.value == "--suppress-inline")
+ {
+ inl = false;
+ break;
+ }
+ }
+ }
+
+ if (inl)
+ {
+ cxx::ixx& i (search<cxx::ixx> (t.dir, t.name, nullptr, nullptr));
+ i.group = &t;
+ t.i (i);
+ }
+ }
+
+ return r;
+ }
+ else
+ {
+ // One of the ?xx{} members.
+ //
+ target& t (xt);
+
+ // First see if we are already linked-up to the cli.cxx{} group.
+ // If it is some other group, then we are definitely not a match.
+ //
+ if (t.group != nullptr)
+ return t.group->is_a<cli_cxx> ();
+
+ // Then see if there is a corresponding cli.cxx{} group.
+ //
+ cli_cxx* g (targets.find<cli_cxx> (t.dir, t.name));
+
+ // Finally, if this target has a cli{} prerequisite, synthesize
+ // the group.
+ //
+ if (g == nullptr)
+ {
+ for (prerequisite& p: group_prerequisites (t))
+ {
+ if (p.is_a<cli> ()) // @@ Need to check that stems match.
+ {
+ g = &targets.insert<cli_cxx> (t.dir, t.name, trace);
+ g->prerequisites.emplace_back (p);
+ break;
+ }
+ }
+ }
+
+ if (g != nullptr)
+ {
+ // Resolve the group's members. This should link us up to
+ // the group.
+ //
+ resolve_group_members (a, *g);
+
+ // For ixx{}, verify it is part of the group.
+ //
+ if (t.is_a<cxx::ixx> () && g->i () == nullptr)
+ {
+ level3 ([&]{trace << "generation of inline file " << t
+ << " is disabled with --suppress-inline";});
+ g = nullptr;
+ }
+ }
+
+ assert (t.group == g);
+ return g;
+ }
+ }
+
+ recipe compile::
+ apply (action a, target& xt, void* vp) const
+ {
+ if (cli_cxx* pt = xt.is_a<cli_cxx> ())
+ {
+ cli_cxx& t (*pt);
+
+ // Derive file names for the members.
+ //
+ t.h ()->derive_path ();
+ t.c ()->derive_path ();
+ if (t.i () != nullptr)
+ t.i ()->derive_path ();
+
+ // Inject dependency on the output directory.
+ //
+ inject_parent_fsdir (a, t);
+
+ // Search and match prerequisites.
+ //
+ switch (a.operation ())
+ {
+ case default_id:
+ case update_id: search_and_match (a, t); break;
+ case clean_id: search_and_match (a, t, t.dir); break;
+ default: assert (false); // We didn't register for this.
+ }
+
+ switch (a)
+ {
+ case perform_update_id: return &perform_update;
+ case perform_clean_id: return &perform_clean;
+ default: return default_recipe; // Forward to prerequisites.
+ }
+ }
+ else
+ {
+ cli_cxx& g (*static_cast<cli_cxx*> (vp));
+ build::match (a, g);
+ return &delegate;
+ }
+ }
+
+ static void
+ append_extension (vector<const char*>& args,
+ path_target& t,
+ const char* opt,
+ const char* def)
+ {
+ assert (t.ext != nullptr); // Should have been figured out in apply().
+
+ if (*t.ext != def)
+ {
+ // CLI needs the extension with the leading dot (unless it is empty)
+ // while we store the extension without. But if there is an extension,
+ // then we can get it (with the dot) from the file name.
+ //
+ args.push_back (opt);
+ args.push_back (t.ext->empty ()
+ ? t.ext->c_str ()
+ : t.path ().extension () - 1);
+ }
+ }
+
+ target_state compile::
+ perform_update (action a, target& xt)
+ {
+ cli_cxx& t (static_cast<cli_cxx&> (xt));
+
+ // Execute our prerequsites and check if we are out of date.
+ //
+ cli* s (execute_prerequisites<cli> (a, t, t.h ()->mtime ()));
+
+ if (s == nullptr)
+ return target_state::unchanged;
+
+ // Translate source path to relative (to working directory). This
+ // results in easier to read diagnostics.
+ //
+ path relo (relative (t.dir));
+ path rels (relative (s->path ()));
+
+ scope& rs (t.root_scope ());
+ const string& cli (rs["config.cli"].as<const string&> ());
+
+ vector<const char*> args {cli.c_str ()};
+
+ // See if we need to pass any --?xx-suffix options.
+ //
+ append_extension (args, *t.h (), "--hxx-suffix", "hxx");
+ append_extension (args, *t.c (), "--cxx-suffix", "cxx");
+ if (t.i () != nullptr)
+ append_extension (args, *t.i (), "--ixx-suffix", "ixx");
+
+ append_options (args, t, "cli.options");
+
+ if (!relo.empty ())
+ {
+ args.push_back ("-o");
+ args.push_back (relo.string ().c_str ());
+ }
+
+ args.push_back (rels.string ().c_str ());
+ args.push_back (nullptr);
+
+ if (verb)
+ print_process (args);
+ else
+ text << "cli " << *s;
+
+ try
+ {
+ process pr (args.data ());
+
+ if (!pr.wait ())
+ throw failed ();
+
+ timestamp ts (system_clock::now ());
+
+ t.h ()->mtime (ts);
+ t.c ()->mtime (ts);
+ if (t.i () != nullptr)
+ t.i ()->mtime (ts);
+
+ return target_state::changed;
+ }
+ catch (const process_error& e)
+ {
+ error << "unable to execute " << args[0] << ": " << e.what ();
+
+ if (e.child ())
+ exit (1);
+
+ throw failed ();
+ }
+ }
+
+ target_state compile::
+ perform_clean (action a, target& xt)
+ {
+ cli_cxx& t (static_cast<cli_cxx&> (xt));
+
+ target_state ts (target_state::unchanged);
+
+ if (t.i () != nullptr &&
+ build::perform_clean (a, *t.i ()) == target_state::changed)
+ ts = target_state::changed;
+
+ if (build::perform_clean (a, *t.c ()) == target_state::changed)
+ ts = target_state::changed;
+
+ if (build::perform_clean (a, *t.h ()) == target_state::changed)
+ ts = target_state::changed;
+
+ return ts;
+ }
+
+ target_state compile::
+ delegate (action a, target& t)
+ {
+ // Delegate to our group.
+ //
+ return execute (a, *t.group);
+ }
+ }
+}