Add ability to specify ad hoc recipe actions

We are reusing the buildspec syntax for that.

1 files changed, 70 insertions, 0 deletions

diff --git a/libbuild2/buildspec.hxx b/libbuild2/buildspec.hxx
new file mode 100644
index 0000000..b181d15
--- /dev/null
+++ b/libbuild2/buildspec.hxx
@@ -0,0 +1,70 @@
+// file      : libbuild2/buildspec.hxx -*- C++ -*-
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef LIBBUILD2_BUILDSPEC_HXX
+#define LIBBUILD2_BUILDSPEC_HXX
+
+#include <libbuild2/types.hxx>
+#include <libbuild2/forward.hxx>
+#include <libbuild2/utility.hxx>
+
+#include <libbuild2/variable.hxx>
+
+#include <libbuild2/export.hxx>
+
+namespace build2
+{
+  struct targetspec
+  {
+    using name_type = build2::name;
+
+    explicit
+    targetspec (name_type n): name (move (n)) {}
+    targetspec (dir_path sb, name_type n)
+        : src_base (move (sb)), name (move (n)) {}
+
+    dir_path src_base;
+    name_type name;
+
+    // The rest is calculated and cached.
+    //
+    scope* root_scope = nullptr;
+    dir_path out_base;
+    path buildfile; // Empty if implied.
+    bool forwarded = false;
+  };
+
+  struct opspec: small_vector<targetspec, 1>
+  {
+    opspec () = default;
+    opspec (string n): name (move (n)) {}
+
+    string name;
+    values params;
+  };
+
+  struct metaopspec: small_vector<opspec, 1>
+  {
+    metaopspec () = default;
+    metaopspec (string n): name (move (n)) {}
+
+    string name;
+    values params;
+  };
+
+  using buildspec = small_vector<metaopspec, 1>;
+
+  LIBBUILD2_SYMEXPORT ostream&
+  operator<< (ostream&, const targetspec&);
+
+  LIBBUILD2_SYMEXPORT ostream&
+  operator<< (ostream&, const opspec&);
+
+  LIBBUILD2_SYMEXPORT ostream&
+  operator<< (ostream&, const metaopspec&);
+
+  LIBBUILD2_SYMEXPORT ostream&
+  operator<< (ostream&, const buildspec&);
+}
+
+#endif // LIBBUILD2_BUILDSPEC_HXX