Add SemanticDB support

WORKSPACE

@@ -57,11 +57,14 @@ specs2_junit_repositories()
 register_toolchains("//testing:testing_toolchain")
 
 load("//scala/scalafmt:scalafmt_repositories.bzl", "scalafmt_default_config", "scalafmt_repositories")
+load("//scala/semanticdb:semanticdb_repositories.bzl", "semanticdb_repositories")
 
 scalafmt_default_config()
 
 scalafmt_repositories()
 
+semanticdb_repositories()
+
 MAVEN_SERVER_URLS = default_maven_server_urls()
 
 # needed for the cross repo proto test

examples/testing/scalatest_repositories/WORKSPACE

@@ -39,3 +39,7 @@ load("@io_bazel_rules_scala//testing:scalatest.bzl", "scalatest_repositories", "
 scalatest_repositories()
 
 scalatest_toolchain()
+
+load("@io_bazel_rules_scala//scala/semanticdb:semanticdb_repositories.bzl", "semanticdb_repositories")
+
+semanticdb_repositories()

scala/BUILD

@@ -105,3 +105,10 @@ declare_deps_provider(
     visibility = ["//visibility:public"],
     deps = ["@io_bazel_rules_scala_scala_parser_combinators"],
 )
+
+declare_deps_provider(
+    name = "semanticdb_scalac_provider",
+    deps_id = "semanticdb_scalac",
+    visibility = ["//visibility:public"],
+    deps = ["@org_scalameta_semanticdb_scalac"],
+)

scala/private/common_attributes.bzl

@@ -54,6 +54,11 @@ common_attrs.update({
     "_dependency_analyzer_plugin": attr.label(
         default = Label(
             "@io_bazel_rules_scala//third_party/dependency_analyzer/src/main:dependency_analyzer",
+        ), allow_files = [".jar"], mandatory = False,
+    ),
+    "_semanticdb_scalac_plugin": attr.label(
+        default = Label(
+            "@io_bazel_rules_scala//scala/private/toolchain_deps:semanticdb_scalac",
         ),
         allow_files = [".jar"],
         mandatory = False,

scala/private/dependency.bzl

@@ -23,6 +23,7 @@ def new_dependency_info(
         unused_deps_mode = unused_deps_mode,
         strict_deps_mode = strict_deps_mode,
         use_analyzer = is_strict_deps_on or is_unused_deps_on,
+        use_semanticdb_scalac = True,
     )
 
 # TODO(https://github.com/bazelbuild/rules_scala/issues/987): Clariy the situation

scala/private/rule_impls.bzl

@@ -61,6 +61,8 @@ def compile_scala(
     plugins = _collect_plugin_paths(plugins)
     if dependency_info.use_analyzer:
         plugins = depset(transitive = [plugins, ctx.attr._dependency_analyzer_plugin.files])
+    if dependency_info.use_semanticdb_scalac and False:
+        plugins = depset(transitive = [plugins, ctx.attr._semanticdb_scalac_plugin.files])
 
     toolchain = ctx.toolchains["@io_bazel_rules_scala//scala:toolchain_type"]
     compiler_classpath_jars = cjars if dependency_info.dependency_mode == "direct" else transitive_compile_jars

scala/private/toolchain_deps/BUILD

@@ -23,3 +23,9 @@ common_toolchain_deps(
     deps_id = "parser_combinators",
     visibility = ["//visibility:public"],
 )
+
+common_toolchain_deps(
+    name = "semanticdb_scalac",
+    deps_id = "semanticdb_scalac",
+    visibility = ["//visibility:public"],
+)

scala/scala_toolchain.bzl

@@ -93,6 +93,7 @@ scala_toolchain = rule(
         "scalacopts": attr.string_list(),
         "dep_providers": attr.label_list(
             default = [
+                "@io_bazel_rules_scala//scala:semanticdb_scalac_provider",
                 "@io_bazel_rules_scala//scala:scala_xml_provider",
                 "@io_bazel_rules_scala//scala:parser_combinators_provider",
                 "@io_bazel_rules_scala//scala:scala_compile_classpath_provider",

scala/semanticdb/semanticdb_repositories.bzl

@@ -0,0 +1,16 @@
+load(
+    "//scala:scala_cross_version.bzl",
+    _default_maven_server_urls = "default_maven_server_urls",
+)
+load("//third_party/repositories:repositories.bzl", "repositories")
+
+
+def semanticdb_repositories(
+        maven_servers = _default_maven_server_urls(),
+        overriden_artifacts = {}):
+    repositories(
+        for_artifact_ids = ["org_scalameta_semanticdb_scalac"],
+        maven_servers = maven_servers,
+        fetch_sources = False,
+        overriden_artifacts = overriden_artifacts,
+    )

third_party/repositories/scala_2_11.bzl

@@ -35,6 +35,10 @@ artifacts = {
             "@io_bazel_rules_scala_scala_library",
         ],
     },
+    "org_scalameta_semanticdb_scalac": {
+        "artifact": "org.scalameta:semanticdb-scalac_2.11.12:4.4.31",
+        "sha256": "d61eb07ff182173c8b30b7caa4bba2bd04fd2c921552ad1c550073f1f0262ed7",
+    },
     "org_scalameta_fastparse": {
         "artifact": "org.scalameta:fastparse_2.11:1.0.1",
         "sha256": "49ecc30a4b47efc0038099da0c97515cf8f754ea631ea9f9935b36ca7d41b733",

third_party/repositories/scala_2_12.bzl

@@ -35,6 +35,10 @@ artifacts = {
             "@io_bazel_rules_scala_scala_library",
         ],
     },
+    "org_scalameta_semanticdb_scalac": {
+        "artifact": "org.scalameta:semanticdb-scalac_2.12.14:4.4.31",
+        "sha256": "8a6d71f1611ede0fdc435a851fdd67ccb64c68b80b2153fce4a389eb33ed7416",
+    },
     "org_scalameta_fastparse": {
         "artifact": "org.scalameta:fastparse_2.12:1.0.1",
         "sha256": "387ced762e93915c5f87fed59d8453e404273f49f812d413405696ce20273aa5",

third_party/repositories/scala_2_13.bzl

@@ -40,6 +40,10 @@ artifacts = {
             "@io_bazel_rules_scala_scala_library",
         ],
     },
+    "org_scalameta_semanticdb_scalac": {
+        "artifact": "org.scalameta:semanticdb-scalac_2.13.6:4.4.31",
+        "sha256": "09f270c275701cfba93620ddd5c0b287a5c123cf528e837c518d5b5dd85efff0",
+    },
     "org_scalameta_fastparse": {
         "artifact": "org.scalameta:fastparse_2.13:1.0.1",
         "sha256": "b43b99244d5b51948daf1467083b3850dc2727c604de98dc426dec14244fd18e",