diff options
Diffstat (limited to 'build/test/rule.cxx')
| -rw-r--r-- | build/test/rule.cxx | 155 |
1 files changed, 119 insertions, 36 deletions
diff --git a/build/test/rule.cxx b/build/test/rule.cxx index b8d7428..da17d61 100644 --- a/build/test/rule.cxx +++ b/build/test/rule.cxx @@ -50,7 +50,7 @@ namespace build // is a test. // if (var.name == "test.input" || - var.name == "test.ouput" || + var.name == "test.output" || var.name == "test.roundtrip" || var.name == "test.options" || var.name == "test.arguments") @@ -68,19 +68,34 @@ namespace build v.rebind (t.base_scope ()[string("test.") + t.type ().name]); r = v && v.as<bool> (); - } - if (!r) - return match_result (t, false); // "Not a test" result. + // If this is the update pre-operation, then all we really need to + // do is say we are not a match and the standard matching machinery + // will (hopefully) find the rule to update this target. + // + // There is one thing that compilates this simple approach: test + // input/output. While normally they will be existing (in src_base) + // files, they could also be auto-generated. In fact, they could + // only be needed for testing, which means the normall update won't + // even know about them (nor clean, for that matter; this is why we + // need cleantest). + // + // To make generated input/output work we will have to cause their + // update ourselves. I other words, we may have to do some actual + // work for (update, test), and not simply "guide" (update, 0) as + // to which targets need updating. For how exactly we are going to + // do it, see apply() below. + // + match_result mr (t, r); - // If this is the update pre-operation, make someone else do - // the job. + // If this is the update pre-operation, change the recipe action + // to (update, 0) (i.e., "unconditional update"). // - if (a.operation () != test_id) - return nullptr; + if (r && a.operation () == update_id) + mr.recipe_action = action (a.meta_operation (), update_id); - return match_result (t, true); + return mr; } recipe rule:: @@ -91,13 +106,24 @@ namespace build if (!mr.value) // Not a test. return noop_recipe; - // Don't do anything for other meta-operations. + // In case of test, we don't do anything for other meta-operations. // - if (a != action (perform_id, test_id)) + if (a.operation () == test_id && a.meta_operation () != perform_id) return noop_recipe; - // See if we have test.{input,output,roundtrip}. First check the - // target-specific vars since they override any scope ones. + // Ok, if we are here, then this means: + // + // 1. This target is a test. + // 2. The action is either + // a. (perform, test, 0) or + // b. (*, update, 0) + // + // In both cases, the next step is to see if we have test.{input, + // output,roundtrip}. + // + + // First check the target-specific vars since they override any + // scope ones. // auto iv (t.vars["test.input"]); auto ov (t.vars["test.output"]); @@ -147,8 +173,8 @@ namespace build } } - const name* i; - const name* o; + const name* in; + const name* on; // Reduce the roundtrip case to input/output. // @@ -158,35 +184,92 @@ namespace build fail << "both test.roundtrip and test.input/output specified " << "for target " << t; - i = o = rv.as<const name*> (); + in = on = rv.as<const name*> (); } else { - i = iv ? iv.as<const name*> () : nullptr; - o = ov ? ov.as<const name*> () : nullptr; + in = iv ? iv.as<const name*> () : nullptr; + on = ov ? ov.as<const name*> () : nullptr; } - // Resolve them to targets (normally just files) and cache in - // our prerequsite targets lists where they can be found by - // perform_test(). If we have either or both, then the first - // entry is input and the second -- output (either can be NULL). + // Resolve them to targets, which normally would be existing files + // but could also be targets that need updating. // - auto& pts (t.prerequisite_targets); + target* it (in != nullptr ? &search (*in, bs) : nullptr); + target* ot (on != nullptr ? in == on ? it : &search (*on, bs) : nullptr); - if (i != nullptr || o != nullptr) - pts.resize (2, nullptr); + if (a.operation () == update_id) + { + // First see if input/output are existing, up-to-date files. This + // is a common case optimization. + // + if (it != nullptr) + { + build::match (a, *it); - //@@ We should match() them, but for update, not test. - //@@ If not doing this for some reason, need to then verify - // path was assigned (i.e., matched an existing file). - // - if (i != nullptr) - pts[0] = &search (*i, bs); + if (file_rule::uptodate (a, *it)) + it = nullptr; + } + + if (ot != nullptr && in == on) + { + build::match (a, *ot); + + if (file_rule::uptodate (a, *ot)) + ot = nullptr; + } + else + ot = it; + + + // Find the "real" update rule, that is, the rule that would + // have been found if we signalled that we do not match from + // match() above. + // + recipe d (match_delegate (a, t).first); + + // If we have no input/output that needs updating, then simply + // redirect to it + // + if (it == nullptr && ot == nullptr) + return d; + + // Ok, time to handle the worst case scenario: we need to + // cause update of input/output targets and also delegate + // to the real update. + // + return [it, ot, dr = move (d)] (action a, target& t) -> target_state + { + // Do the general update first. + // + target_state r (execute_delegate (dr, a, t)); - if (o != nullptr) - pts[1] = i == o ? pts[0] : &search (*o, bs); + if (it != nullptr) + r |= execute (a, *it); - return &perform_test; + if (ot != nullptr) + r |= execute (a, *ot); + + return r; + }; + } + else + { + // Cache the targets in our prerequsite targets lists where they + // can be found by perform_test(). If we have either or both, + // then the first entry is input and the second -- output (either + // can be NULL). + // + if (it != nullptr || ot != nullptr) + { + auto& pts (t.prerequisite_targets); + pts.resize (2, nullptr); + pts[0] = it; + pts[1] = ot; + } + + return &perform_test; + } } static void @@ -310,7 +393,7 @@ namespace build if (pts.size () != 0 && pts[0] != nullptr) { file& it (static_cast<file&> (*pts[0])); - assert (!it.path ().empty ()); // Should have been assigned. + assert (!it.path ().empty ()); // Should have been assigned by update. args.push_back (it.path ().string ().c_str ()); } // Maybe arguments then? @@ -325,7 +408,7 @@ namespace build if (pts.size () != 0 && pts[1] != nullptr) { file& ot (static_cast<file&> (*pts[1])); - assert (!ot.path ().empty ()); // Should have been assigned. + assert (!ot.path ().empty ()); // Should have been assigned by update. args.push_back ("diff"); args.push_back ("-u"); |