Refactor queryview.

Splits queryview into queryview and bp2build. The latter runs as a
presingleton (could be converted to a singleton). This prevents needing
to run soong_ui a subsequent time to build the query. Queryview remains
as a separate step to prevent increasing runtime due to this generation
every time Soong runs.

Currently this is running as a presingleton as this gives a translation
of Android.bp files after only LoadHooks have run, no mutators.

Test: go tests
Test: m queryview && bazel query --config=queryview //...
Change-Id: If2ba28c7ef60fbd41f43bda6623d41c8c7d23a1b

1 files changed, 221 insertions, 0 deletions

diff --git a/bp2build/build_conversion_test.go b/bp2build/build_conversion_test.go
new file mode 100644
index 000000000..8230ad8c0
--- /dev/null
+++ b/bp2build/build_conversion_test.go
@@ -0,0 +1,221 @@
+// Copyright 2020 Google Inc. 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.
+
+package bp2build
+
+import (
+	"android/soong/android"
+	"testing"
+)
+
+func TestGenerateSoongModuleTargets(t *testing.T) {
+	testCases := []struct {
+		bp                  string
+		expectedBazelTarget string
+	}{
+		{
+			bp: `custom {
+	name: "foo",
+}
+		`,
+			expectedBazelTarget: `soong_module(
+    name = "foo",
+    module_name = "foo",
+    module_type = "custom",
+    module_variant = "",
+    module_deps = [
+    ],
+)`,
+		},
+		{
+			bp: `custom {
+	name: "foo",
+	ramdisk: true,
+}
+		`,
+			expectedBazelTarget: `soong_module(
+    name = "foo",
+    module_name = "foo",
+    module_type = "custom",
+    module_variant = "",
+    module_deps = [
+    ],
+    ramdisk = True,
+)`,
+		},
+		{
+			bp: `custom {
+	name: "foo",
+	owner: "a_string_with\"quotes\"_and_\\backslashes\\\\",
+}
+		`,
+			expectedBazelTarget: `soong_module(
+    name = "foo",
+    module_name = "foo",
+    module_type = "custom",
+    module_variant = "",
+    module_deps = [
+    ],
+    owner = "a_string_with\"quotes\"_and_\\backslashes\\\\",
+)`,
+		},
+		{
+			bp: `custom {
+	name: "foo",
+	required: ["bar"],
+}
+		`,
+			expectedBazelTarget: `soong_module(
+    name = "foo",
+    module_name = "foo",
+    module_type = "custom",
+    module_variant = "",
+    module_deps = [
+    ],
+    required = [
+        "bar",
+    ],
+)`,
+		},
+		{
+			bp: `custom {
+	name: "foo",
+	target_required: ["qux", "bazqux"],
+}
+		`,
+			expectedBazelTarget: `soong_module(
+    name = "foo",
+    module_name = "foo",
+    module_type = "custom",
+    module_variant = "",
+    module_deps = [
+    ],
+    target_required = [
+        "qux",
+        "bazqux",
+    ],
+)`,
+		},
+		{
+			bp: `custom {
+	name: "foo",
+	dist: {
+		targets: ["goal_foo"],
+		tag: ".foo",
+	},
+	dists: [
+		{
+			targets: ["goal_bar"],
+			tag: ".bar",
+		},
+	],
+}
+		`,
+			expectedBazelTarget: `soong_module(
+    name = "foo",
+    module_name = "foo",
+    module_type = "custom",
+    module_variant = "",
+    module_deps = [
+    ],
+    dist = {
+        "tag": ".foo",
+        "targets": [
+            "goal_foo",
+        ],
+    },
+    dists = [
+        {
+            "tag": ".bar",
+            "targets": [
+                "goal_bar",
+            ],
+        },
+    ],
+)`,
+		},
+		{
+			bp: `custom {
+	name: "foo",
+	required: ["bar"],
+	target_required: ["qux", "bazqux"],
+	ramdisk: true,
+	owner: "custom_owner",
+	dists: [
+		{
+			tag: ".tag",
+			targets: ["my_goal"],
+		},
+	],
+}
+		`,
+			expectedBazelTarget: `soong_module(
+    name = "foo",
+    module_name = "foo",
+    module_type = "custom",
+    module_variant = "",
+    module_deps = [
+    ],
+    dists = [
+        {
+            "tag": ".tag",
+            "targets": [
+                "my_goal",
+            ],
+        },
+    ],
+    owner = "custom_owner",
+    ramdisk = True,
+    required = [
+        "bar",
+    ],
+    target_required = [
+        "qux",
+        "bazqux",
+    ],
+)`,
+		},
+	}
+
+	dir := "."
+	for _, testCase := range testCases {
+		config := android.TestConfig(buildDir, nil, testCase.bp, nil)
+		ctx := android.NewTestContext(config)
+		ctx.RegisterModuleType("custom", customModuleFactory)
+		ctx.Register()
+
+		_, errs := ctx.ParseFileList(dir, []string{"Android.bp"})
+		android.FailIfErrored(t, errs)
+		_, errs = ctx.PrepareBuildActions(config)
+		android.FailIfErrored(t, errs)
+
+		bp2BuildCtx := bp2buildBlueprintWrapContext{
+			bpCtx: ctx.Context.Context,
+		}
+
+		bazelTargets := GenerateSoongModuleTargets(&bp2BuildCtx)[dir]
+		if g, w := len(bazelTargets), 1; g != w {
+			t.Fatalf("Expected %d bazel target, got %d", w, g)
+		}
+
+		actualBazelTarget := bazelTargets[0]
+		if actualBazelTarget.content != testCase.expectedBazelTarget {
+			t.Errorf(
+				"Expected generated Bazel target to be '%s', got '%s'",
+				testCase.expectedBazelTarget,
+				actualBazelTarget,
+			)
+		}
+	}
+}