Remove dependency on Bazel's build.proto.

Fixes #4

--
MOS_MIGRATED_REVID=119722062

skydoc/BUILD

@@ -1,11 +1,17 @@
 package(default_visibility = ["//visibility:public"])
 
+load("@protobuf//:protobuf.bzl", "py_proto_library")
+
+py_proto_library(
+    name = "build_pb_py",
+    srcs = ["build.proto"],
+    default_runtime = "@protobuf//:protobuf_python",
+    protoc = "@protobuf//:protoc",
+)
+
 py_library(
     name = "common",
     srcs = ["common.py"],
-    deps = [
-        "@bazel_tools//src/main/protobuf:build_pb_py",
-    ],
 )
 
 py_test(
@@ -26,8 +32,8 @@ py_test(
     name = "macro_extractor_test",
     srcs = ["macro_extractor_test.py"],
     deps = [
+        ":build_pb_py",
         ":macro_extractor",
-        "@bazel_tools//src/main/protobuf:build_pb_py",
     ],
 )
 
@@ -44,33 +50,33 @@ py_test(
     name = "rule_extractor_test",
     srcs = ["rule_extractor_test.py"],
     deps = [
+        ":build_pb_py",
         ":rule_extractor",
-        "@bazel_tools//src/main/protobuf:build_pb_py",
     ],
 )
 
 py_library(
     name = "rule",
     srcs = ["rule.py"],
     deps = [
+        ":build_pb_py",
         "//external:mistune",
-        "@bazel_tools//src/main/protobuf:build_pb_py",
     ],
 )
 
 py_binary(
     name = "skydoc",
     srcs = ["main.py"],
+    data = [
+        "//skydoc/sass:main.css",
+        "//skydoc/templates",
+    ],
     main = "main.py",
     deps = [
         ":macro_extractor",
         ":rule",
         ":rule_extractor",
-        "//external:jinja2",
         "//external:gflags",
-    ],
-    data = [
-        "//skydoc/templates",
-        "//skydoc/sass:main.css",
+        "//external:jinja2",
     ],
 )

skydoc/build.proto

@@ -0,0 +1,89 @@
+// Copyright 2014 The Bazel Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto2";
+
+package skydoc;
+
+message Attribute {
+  // Indicates the type of attribute.
+  enum Discriminator {
+    INTEGER = 1;             // int_value
+    STRING = 2;              // string_value
+    LABEL = 3;               // string_value
+    OUTPUT = 4;              // string_value
+    STRING_LIST = 5;         // string_list_value
+    LABEL_LIST = 6;          // string_list_value
+    OUTPUT_LIST = 7;         // string_list_value
+    DISTRIBUTION_SET = 8;    // string_list_value - order is unimportant
+    LICENSE = 9;             // license
+    STRING_DICT = 10;        // string_dict_value
+    FILESET_ENTRY_LIST = 11; // fileset_list_value
+    LABEL_LIST_DICT = 12;    // label_list_dict_value
+    STRING_LIST_DICT = 13;   // string_list_dict_value
+    BOOLEAN = 14;            // int, bool and string value
+    TRISTATE = 15;           // tristate, int and string value
+    INTEGER_LIST = 16;       // int_list_value
+    STRING_DICT_UNARY = 17;  // string_dict_unary_value
+    UNKNOWN = 18;            // unknown type, use only for build extensions
+    LABEL_DICT_UNARY = 19;   // label_dict_unary_value
+    SELECTOR_LIST = 20;      // selector_list
+    NAME = 21;               // name, use only for the name attribute
+  }
+}
+
+// Information about allowed rule classes for a specific attribute of a rule.
+message AllowedRuleClassInfo {
+  enum AllowedRuleClasses {
+    ANY = 1;  // Any rule is allowed to be in this attribute
+    SPECIFIED = 2;  // Only the explicitly listed rules are allowed
+  }
+
+  required AllowedRuleClasses policy = 1;
+
+  // Rule class names of rules allowed in this attribute, e.g "cc_library",
+  // "py_binary". Only present if the allowed_rule_classes field is set to
+  // SPECIFIED.
+  repeated string allowed_rule_class = 2;
+}
+
+// This message represents a single attribute of a single rule.
+message AttributeDefinition {
+
+  // Rule name, e.g. "cc_library"
+  required string name = 1;
+  required Attribute.Discriminator type = 2;
+  required bool mandatory = 3;
+
+  // Only present for attributes of type LABEL and LABEL_LIST.
+  optional AllowedRuleClassInfo allowed_rule_classes = 4;
+
+  optional string documentation = 5;
+}
+
+message RuleDefinition {
+  required string name = 1;
+  // Only contains documented attributes
+  repeated AttributeDefinition attribute = 2;
+
+  optional string documentation = 3;
+
+  optional string example_documentation = 4;
+
+}
+
+message BuildLanguage {
+  // Only contains documented rule definitions
+  repeated RuleDefinition rule = 1;
+}

skydoc/common.py

@@ -15,7 +15,6 @@
 """Common functions for skydoc."""
 
 import re
-from src.main.protobuf import build_pb2
 from xml.sax.saxutils import escape
 
 

skydoc/macro_extractor.py

@@ -16,7 +16,7 @@
 
 import ast
 
-from src.main.protobuf import build_pb2
+from skydoc import build_pb2
 from skydoc import common
 
 def get_type(expr):

skydoc/macro_extractor_test.py

@@ -18,8 +18,8 @@
 import textwrap
 import unittest
 from google.protobuf import text_format
+from skydoc import build_pb2
 from skydoc import macro_extractor
-from src.main.protobuf import build_pb2
 
 
 class MacroExtractorTest(unittest.TestCase):

skydoc/main.py

@@ -26,7 +26,6 @@
 from skydoc import macro_extractor
 from skydoc import rule
 from skydoc import rule_extractor
-from src.main.protobuf import build_pb2
 
 gflags.DEFINE_string('output_dir', '',
     'The directory to write the output generated documentation to if '

skydoc/rule.py

@@ -15,7 +15,7 @@
 """Representations used for rendering documentation templates."""
 
 import mistune
-from src.main.protobuf import build_pb2
+from skydoc import build_pb2
 
 class Attribute(object):
   """Representation of an attribute used to render documentation templates."""

skydoc/rule_extractor.py

@@ -16,7 +16,7 @@
 
 import ast
 
-from src.main.protobuf import build_pb2
+from skydoc import build_pb2
 from skydoc import common
 from skydoc.stubs import attr
 from skydoc.stubs import skylark_globals

skydoc/rule_extractor_test.py

@@ -18,8 +18,8 @@
 import tempfile
 import textwrap
 from google.protobuf import text_format
+from skydoc import build_pb2
 from skydoc import rule_extractor
-from src.main.protobuf import build_pb2
 
 
 class RuleExtractorTest(unittest.TestCase):

skydoc/stubs/BUILD

@@ -7,6 +7,6 @@ py_library(
         "skylark_globals.py",
     ],
     deps = [
-        "@bazel_tools//src/main/protobuf:build_pb_py",
+        "//skydoc:build_pb_py",
     ],
 )

skydoc/stubs/attr.py

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from src.main.protobuf import build_pb2
+from skydoc import build_pb2
 
 def strcmp(s1, s2):
   if s1 > s2: