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"""Wrappers for common build rules.
These wrappers apply common BUILD configurations (e.g., proto_library
automagically creating cc_ and go_ proto targets) and act as a single point of
change for Google-internal and bazel-compatible rules.
"""
load("//tools/go_stateify:defs.bzl", "go_stateify")
load("//tools/go_marshal:defs.bzl", "go_marshal", "marshal_deps", "marshal_test_deps")
load("//tools/bazeldefs:defs.bzl", _cc_binary = "cc_binary", _cc_flags_supplier = "cc_flags_supplier", _cc_library = "cc_library", _cc_proto_library = "cc_proto_library", _cc_test = "cc_test", _cc_toolchain = "cc_toolchain", _container_image = "container_image", _default_installer = "default_installer", _default_net_util = "default_net_util", _gbenchmark = "gbenchmark", _go_binary = "go_binary", _go_embed_data = "go_embed_data", _go_image = "go_image", _go_library = "go_library", _go_proto_library = "go_proto_library", _go_test = "go_test", _go_tool_library = "go_tool_library", _gtest = "gtest", _loopback = "loopback", _pkg_deb = "pkg_deb", _pkg_tar = "pkg_tar", _proto_library = "proto_library", _py_binary = "py_binary", _py_library = "py_library", _py_requirement = "py_requirement", _py_test = "py_test", _select_arch = "select_arch", _select_system = "select_system")
load("//tools/bazeldefs:platforms.bzl", _default_platform = "default_platform", _platforms = "platforms")
load("//tools/bazeldefs:tags.bzl", "go_suffixes")
# Delegate directly.
cc_binary = _cc_binary
cc_library = _cc_library
cc_test = _cc_test
cc_toolchain = _cc_toolchain
cc_flags_supplier = _cc_flags_supplier
container_image = _container_image
go_embed_data = _go_embed_data
go_image = _go_image
go_test = _go_test
go_tool_library = _go_tool_library
gtest = _gtest
gbenchmark = _gbenchmark
pkg_deb = _pkg_deb
pkg_tar = _pkg_tar
py_library = _py_library
py_binary = _py_binary
py_test = _py_test
py_requirement = _py_requirement
select_arch = _select_arch
select_system = _select_system
loopback = _loopback
default_installer = _default_installer
default_net_util = _default_net_util
platforms = _platforms
default_platform = _default_platform
def go_binary(name, **kwargs):
"""Wraps the standard go_binary.
Args:
name: the rule name.
**kwargs: standard go_binary arguments.
"""
_go_binary(
name = name,
**kwargs
)
def calculate_sets(srcs):
"""Calculates special Go sets for templates.
Args:
srcs: the full set of Go sources.
Returns:
A dictionary of the form:
"": [src1.go, src2.go]
"suffix": [src3suffix.go, src4suffix.go]
Note that suffix will typically start with '_'.
"""
result = dict()
for file in srcs:
if not file.endswith(".go"):
continue
target = ""
for suffix in go_suffixes:
if file.endswith(suffix + ".go"):
target = suffix
if not target in result:
result[target] = [file]
else:
result[target].append(file)
return result
def go_imports(name, src, out):
"""Simplify a single Go source file by eliminating unused imports."""
native.genrule(
name = name,
srcs = [src],
outs = [out],
tools = ["@org_golang_x_tools//cmd/goimports:goimports"],
cmd = ("$(location @org_golang_x_tools//cmd/goimports:goimports) $(SRCS) > $@"),
)
def go_library(name, srcs, deps = [], imports = [], stateify = True, marshal = False, marshal_debug = False, **kwargs):
"""Wraps the standard go_library and does stateification and marshalling.
The recommended way is to use this rule with mostly identical configuration as the native
go_library rule.
These definitions provide additional flags (stateify, marshal) that can be used
with the generators to automatically supplement the library code.
load("//tools:defs.bzl", "go_library")
go_library(
name = "foo",
srcs = ["foo.go"],
)
Args:
name: the rule name.
srcs: the library sources.
deps: the library dependencies.
imports: imports required for stateify.
stateify: whether statify is enabled (default: true).
marshal: whether marshal is enabled (default: false).
marshal_debug: whether the gomarshal tools emits debugging output (default: false).
**kwargs: standard go_library arguments.
"""
all_srcs = srcs
all_deps = deps
dirname, _, _ = native.package_name().rpartition("/")
full_pkg = dirname + "/" + name
if stateify:
# Only do stateification for non-state packages without manual autogen.
# First, we need to segregate the input files via the special suffixes,
# and calculate the final output set.
state_sets = calculate_sets(srcs)
for (suffix, src_subset) in state_sets.items():
go_stateify(
name = name + suffix + "_state_autogen_with_imports",
srcs = src_subset,
imports = imports,
package = full_pkg,
out = name + suffix + "_state_autogen_with_imports.go",
)
go_imports(
name = name + suffix + "_state_autogen",
src = name + suffix + "_state_autogen_with_imports.go",
out = name + suffix + "_state_autogen.go",
)
all_srcs = all_srcs + [
name + suffix + "_state_autogen.go"
for suffix in state_sets.keys()
]
if "//pkg/state" not in all_deps:
all_deps = all_deps + ["//pkg/state"]
if marshal:
# See above.
marshal_sets = calculate_sets(srcs)
for (suffix, src_subset) in marshal_sets.items():
go_marshal(
name = name + suffix + "_abi_autogen",
srcs = src_subset,
debug = select({
"//tools/go_marshal:marshal_config_verbose": True,
"//conditions:default": marshal_debug,
}),
imports = imports,
package = name,
)
extra_deps = [
dep
for dep in marshal_deps
if not dep in all_deps
]
all_deps = all_deps + extra_deps
all_srcs = all_srcs + [
name + suffix + "_abi_autogen_unsafe.go"
for suffix in marshal_sets.keys()
]
_go_library(
name = name,
srcs = all_srcs,
deps = all_deps,
**kwargs
)
if marshal:
# Ignore importpath for go_test.
kwargs.pop("importpath", None)
# See above.
marshal_sets = calculate_sets(srcs)
for (suffix, _) in marshal_sets.items():
_go_test(
name = name + suffix + "_abi_autogen_test",
srcs = [name + suffix + "_abi_autogen_test.go"],
library = ":" + name,
deps = marshal_test_deps,
**kwargs
)
def proto_library(name, srcs, **kwargs):
"""Wraps the standard proto_library.
Given a proto_library named "foo", this produces three different targets:
- foo_proto: proto_library rule.
- foo_go_proto: go_proto_library rule.
- foo_cc_proto: cc_proto_library rule.
Args:
srcs: the proto sources.
**kwargs: standard proto_library arguments.
"""
deps = kwargs.pop("deps", [])
_proto_library(
name = name + "_proto",
srcs = srcs,
deps = deps,
**kwargs
)
_go_proto_library(
name = name + "_go_proto",
proto = ":" + name + "_proto",
deps = deps,
**kwargs
)
_cc_proto_library(
name = name + "_cc_proto",
deps = [":" + name + "_proto"],
**kwargs
)
|
