basic bazel integration (#809)

* bazel integration

* github workflow

* name fix

* set CC var too

* name fix

.bazelrc

@@ -0,0 +1 @@
+build --cxxopt="-std=c++20"

.bazelversion

@@ -0,0 +1 @@
+8.0.0

.github/workflows/ubuntu-bazel.yml

@@ -0,0 +1,37 @@
+name: Ubuntu 22.04 Bazel
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, ready_for_review]
+    paths-ignore:
+      - '**.md'
+      - 'docs/**'
+  push:
+    branches:
+      - main
+    paths-ignore:
+      - '**.md'
+      - 'docs/**'
+
+permissions:
+  contents: read
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  ubuntu-bazel:
+    runs-on: ubuntu-22.04
+    strategy:
+      matrix:
+        shared: [ON, OFF]
+        cxx: [g++-12, clang++-14]
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: bazelbuild/setup-bazelisk@v3
+      - name: Build & Test
+        run: bazel test //...
+        env:
+          CC: ${{matrix.cxx}}
+          CXX: ${{matrix.cxx}}

.gitignore

@@ -24,4 +24,7 @@ benchmarks/competitors/servo-url/debug
 benchmarks/competitors/servo-url/target
 
 #ignore VScode
-.vscode/
+.vscode/
+
+# bazel output
+bazel-*

BUILD.bazel

@@ -0,0 +1,20 @@
+cc_library(
+    name = "ada",
+    srcs = [
+        "src/ada.cpp",
+    ],
+    hdrs = glob([
+        "include/*.h",
+        "include/ada/*.h",
+        # todo: this can be included by every client of the library, but there is no better way
+        # since .cpp files are included into each other.
+        "src/*.cpp",
+    ]),
+    # todo: once .cpp files are not included, rather then polluting -I flags, src/ should
+    # be dropped from hdrs and this replaced by `strip_include_prefix = "include"`
+    includes = [
+        "include",
+        "include/ada",
+    ],
+    visibility = ["//visibility:public"],
+)

MODULE.bazel

@@ -0,0 +1 @@
+bazel_dep(name = "googletest", version = "1.15.2")

tests/BUILD.bazel

@@ -0,0 +1,9 @@
+cc_test(
+    name = "url_search_params",
+    srcs = ["url_search_params.cpp"],
+    deps = [
+        "//:ada",
+        "@googletest//:gtest",
+        "@googletest//:gtest_main",
+    ],
+)