Add native.rule(NAME), which returns the attributes of a previously defined rule.

Add native.rules(), which returns all previously defined rules.

These primitives can be used to write Skylark extensions that aggregate over the contents of a BUILD file, eg.

   def instantiate_if_needed(name):
      n = name + "_wrapped"
      if not native.rule(n):
         py_test(name = n , ... )

   def archive_cc_src_files(tag):
     all_src = []
     for r in native.rules().values():
       if tag in r["tags"] and r["kind"] == "cc_library":
         all_src.append(r["srcs"])
     native.genrule(cmd = "zip $@ $^", srcs = all_src, outs = ["out.zip"])


RELNOTES: Support aggregation over existing rules in Skylark extensions
through native.rules and native.rule.

--
MOS_MIGRATED_REVID=112249050

0 files changed, 0 insertions, 0 deletions