Runtime support for dist-for-goals.

Convert dist-for-goals.

Bug: 198496782
Test: rbcrun build/make/tests/run.rbc
Change-Id: I46ef9e897143aecf8bd28ad8569d48e74530b0e5

core/product_config.rbc

@@ -17,6 +17,7 @@ load("//build/make/core:envsetup.rbc", _envsetup_init = "init")
 """Runtime functions."""
 
 _soong_config_namespaces_key = "$SOONG_CONFIG_NAMESPACES"
+_dist_for_goals_key = "$dist_for_goals"
 def _init_globals(version_info):
     """Returns dict created from the runtime environment."""
     globals = dict()
@@ -90,6 +91,18 @@ def _printglobals(globals, globals_base):
                         __print_attr("SOONG_CONFIG_%s_%s" % (nsname, var), val)
                     else:
                         print("SOONG_CONFIG_%s_%s :=" % (nsname, var))
+        elif attr == _dist_for_goals_key:
+            goals = []
+            src_dst_list = []
+            goal_dst_list = []
+            for goal_name, goal_src_dst_list in sorted(val.items()):
+                goals.append(goal_name)
+                for sd in sorted(goal_src_dst_list):
+                    src_dst_list.append(":".join(sd))
+                    goal_dst_list.append(":".join((goal_name, sd[1])))
+            print("_all_dist_goal_output_pairs:=", " ".join(goal_dst_list))
+            print("_all_dist_goals:=", " ".join(goals))
+            print("_all_dist_src_dst_pairs:=", " ".join(src_dst_list))
         elif attr not in globals_base or globals_base[attr] != val:
             __print_attr(attr, val)
 
@@ -513,6 +526,21 @@ def _expand_wildcard(pattern):
     """Expands shell wildcard pattern."""
     return rblf_wildcard(pattern)
 
+def _mkdist_for_goals(g, goal, src_dst_list):
+    """Implements dist-for-goals macro."""
+    goals_map = g.get(_dist_for_goals_key, {})
+    pairs = goals_map.get(goal)
+    if pairs == None:
+        pairs = []
+        g[_dist_for_goals_key] = dict([(k,v) for k,v in goals_map.items()] + [(goal, pairs)])
+    for src_dst in __words(src_dst_list):
+        pair=src_dst.split(":")
+        if len(pair) > 2:
+            fail(src_dst + " should be a :-separated pair")
+        pairs.append((pair[0],pair[1] if len(pair) == 2 and pair[1] else __base(pair[0])))
+    g[_dist_for_goals_key][goal] = pairs
+
+
 def _mkerror(file, message = ""):
     """Prints error and stops."""
     fail("%s: %s. Stop" % (file, message))
@@ -675,6 +703,7 @@ rblf = struct(
     init_globals = _init_globals,
     inherit = _inherit,
     indirect = _indirect,
+    mkdist_for_goals = _mkdist_for_goals,
     mkinfo = _mkinfo,
     mkerror = _mkerror,
     mkpatsubst = _mkpatsubst,

tests/device.rbc

@@ -55,6 +55,9 @@ def init(g, handle):
   rblf.soong_config_set(g, "NS2", "v3", "abc")
   rblf.soong_config_set(g, "NS2", "v3", "xyz")
 
+  rblf.mkdist_for_goals(g, "goal", "dir1/file1:out1 dir1/file2:out2")
+  rblf.mkdist_for_goals(g, "goal", "dir2/file2:")
+
   if rblf.board_platform_in(g, "board1 board2"):
     cfg["PRODUCT_PACKAGES"] += ["bad_package"]
   g["TARGET_BOARD_PLATFORM"] = "board1"

tests/run.rbc

@@ -102,3 +102,11 @@ assert_eq(30, globals["PLATFORM_SDK_VERSION"])
 
 assert_eq("xyz", rblf.soong_config_get(globals, "NS2", "v3"))
 assert_eq(None, rblf.soong_config_get(globals, "NS2", "nonexistant_var"))
+
+goals = globals["$dist_for_goals"]
+assert_eq(
+    {
+        "goal": [("dir1/file1", "out1"), ("dir1/file2", "out2"), ("dir2/file2", "file2")]
+    },
+    { k:v for k,v in sorted(goals.items()) }
+)