Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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338 lines
10 KiB
338 lines
10 KiB
_shell_find_runfiles = """ |
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# --- begin runfiles.bash initialization --- |
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# Copy-pasted from Bazel's Bash runfiles library (tools/bash/runfiles/runfiles.bash). |
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set -euo pipefail |
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if [[ ! -d "${RUNFILES_DIR:-/dev/null}" && ! -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then |
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if [[ -f "$0.runfiles_manifest" ]]; then |
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export RUNFILES_MANIFEST_FILE="$0.runfiles_manifest" |
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elif [[ -f "$0.runfiles/MANIFEST" ]]; then |
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export RUNFILES_MANIFEST_FILE="$0.runfiles/MANIFEST" |
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elif [[ -f "$0.runfiles/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then |
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export RUNFILES_DIR="$0.runfiles" |
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fi |
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fi |
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if [[ -f "${RUNFILES_DIR:-/dev/null}/bazel_tools/tools/bash/runfiles/runfiles.bash" ]]; then |
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source "${RUNFILES_DIR}/bazel_tools/tools/bash/runfiles/runfiles.bash" |
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elif [[ -f "${RUNFILES_MANIFEST_FILE:-/dev/null}" ]]; then |
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source "$(grep -m1 "^bazel_tools/tools/bash/runfiles/runfiles.bash " \ |
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"$RUNFILES_MANIFEST_FILE" | cut -d ' ' -f 2-)" |
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else |
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echo >&2 "ERROR: cannot find @bazel_tools//tools/bash/runfiles:runfiles.bash" |
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exit 1 |
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fi |
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# --- end runfiles.bash initialization --- |
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""" |
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|
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def _librule(name): |
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return name + "_lib" |
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|
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def lua_cclibrary(name, srcs, hdrs = [], deps = [], luadeps = []): |
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lib_rule = name + "_lib" |
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so_rule = "lib" + name + ".so" |
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so_file = _remove_prefix(name, "lua/") + ".so" |
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|
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native.cc_library( |
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name = _librule(name), |
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hdrs = hdrs, |
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srcs = srcs, |
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deps = deps + [_librule(dep) for dep in luadeps] + ["@lua//:liblua_headers"], |
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) |
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|
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native.cc_binary( |
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name = so_rule, |
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linkshared = True, |
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deps = [_librule(name)], |
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linkopts = select({ |
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":darwin": [ |
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"-undefined dynamic_lookup", |
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], |
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"//conditions:default": [], |
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}) |
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) |
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|
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native.genrule( |
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name = name + "_copy", |
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srcs = [":" + so_rule], |
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outs = [so_file], |
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cmd = "cp $< $@", |
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) |
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|
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native.filegroup( |
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name = name, |
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data = [so_file], |
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) |
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|
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def _remove_prefix(str, prefix): |
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if not str.startswith(prefix): |
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fail("%s doesn't start with %s" % (str, prefix)) |
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return str[len(prefix):] |
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|
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def _remove_suffix(str, suffix): |
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if not str.endswith(suffix): |
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fail("%s doesn't end with %s" % (str, suffix)) |
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return str[:-len(suffix)] |
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|
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def lua_library(name, srcs, strip_prefix, luadeps = []): |
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outs = [_remove_prefix(src, strip_prefix + "/") for src in srcs] |
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native.genrule( |
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name = name + "_copy", |
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srcs = srcs, |
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outs = outs, |
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cmd = "cp $(SRCS) $(@D)", |
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) |
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|
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native.filegroup( |
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name = name, |
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data = outs + luadeps, |
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) |
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|
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def make_shell_script(name, contents, out): |
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script_contents = (_shell_find_runfiles + contents).replace("$", "$$") |
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native.genrule( |
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name = "gen_" + name, |
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outs = [out], |
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cmd = "(cat <<'HEREDOC'\n%s\nHEREDOC\n) > $@" % script_contents, |
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) |
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|
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def _lua_binary_or_test(name, luamain, luadeps, rule): |
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script = name + ".sh" |
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make_shell_script( |
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name = "gen_" + name, |
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out = script, |
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contents = """ |
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BASE=$(dirname $(rlocation upb/upb_c.so)) |
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export LUA_CPATH="$BASE/?.so" |
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export LUA_PATH="$BASE/?.lua" |
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$(rlocation lua/lua) $(rlocation upb/tools/upbc.lua) "$@" |
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""", |
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) |
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rule( |
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name = name, |
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srcs = [script], |
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data = ["@lua//:lua", "@bazel_tools//tools/bash/runfiles", luamain] + luadeps, |
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) |
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|
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def lua_binary(name, luamain, luadeps = []): |
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_lua_binary_or_test(name, luamain, luadeps, native.sh_binary) |
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|
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def lua_test(name, luamain, luadeps = []): |
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_lua_binary_or_test(name, luamain, luadeps, native.sh_test) |
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|
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def generated_file_staleness_test(name, outs, generated_pattern): |
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"""Tests that checked-in file(s) match the contents of generated file(s). |
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The resulting test will verify that all output files exist and have the |
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correct contents. If the test fails, it can be invoked with --fix to |
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bring the checked-in files up to date. |
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|
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Args: |
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name: Name of the rule. |
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outs: the checked-in files that are copied from generated files. |
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generated_pattern: the pattern for transforming each "out" file into a |
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generated file. For example, if generated_pattern="generated/%s" then |
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a file foo.txt will look for generated file generated/foo.txt. |
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""" |
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script_name = name + ".py" |
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script_src = "//:tools/staleness_test.py" |
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# Filter out non-existing rules so Blaze doesn't error out before we even |
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# run the test. |
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existing_outs = native.glob(include = outs) |
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|
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# The file list contains a few extra bits of information at the end. |
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# These get unpacked by the Config class in staleness_test_lib.py. |
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file_list = outs + [generated_pattern, native.package_name() or ".", name] |
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native.genrule( |
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name = name + "_makescript", |
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outs = [script_name], |
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srcs = [script_src], |
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testonly = 1, |
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cmd = "cat $(location " + script_src + ") > $@; " + |
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"sed -i.bak -e 's|INSERT_FILE_LIST_HERE|" + "\\\n ".join(file_list) + "|' $@", |
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) |
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native.py_test( |
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name = name, |
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srcs = [script_name], |
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data = existing_outs + [generated_pattern % file for file in outs], |
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deps = [ |
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"//:staleness_test_lib", |
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], |
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) |
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# upb_amalgamation() rule, with file_list aspect. |
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SrcList = provider( |
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fields = { |
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"srcs": "list of srcs", |
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"hdrs": "list of hdrs", |
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}, |
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) |
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def _file_list_aspect_impl(target, ctx): |
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srcs = [] |
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hdrs = [] |
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for src in ctx.rule.attr.srcs: |
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srcs += src.files.to_list() |
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for hdr in ctx.rule.attr.hdrs: |
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hdrs += hdr.files.to_list() |
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return [SrcList(srcs = srcs, hdrs = hdrs)] |
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_file_list_aspect = aspect( |
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implementation = _file_list_aspect_impl, |
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) |
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def _upb_amalgamation(ctx): |
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inputs = [] |
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srcs = [] |
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for lib in ctx.attr.libs: |
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inputs += lib[SrcList].srcs |
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inputs += lib[SrcList].hdrs |
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srcs += [src for src in lib[SrcList].srcs if src.path.endswith("c")] |
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ctx.actions.run( |
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inputs = inputs, |
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outputs = ctx.outputs.outs, |
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arguments = ["", ctx.bin_dir.path + "/"] + [f.path for f in srcs], |
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progress_message = "Making amalgamation", |
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executable = ctx.executable.amalgamator, |
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) |
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upb_amalgamation = rule( |
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attrs = { |
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"amalgamator": attr.label( |
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executable = True, |
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cfg = "host", |
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), |
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"libs": attr.label_list(aspects = [_file_list_aspect]), |
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"outs": attr.output_list(), |
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}, |
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implementation = _upb_amalgamation, |
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) |
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is_bazel = not hasattr(native, "genmpm") |
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google3_dep_map = { |
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"@absl//absl/base:core_headers": "//third_party/absl/base:core_headers", |
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"@absl//absl/strings": "//third_party/absl/strings", |
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"@com_google_protobuf//:protoc": "//third_party/protobuf:protoc", |
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"@com_google_protobuf//:protobuf": "//third_party/protobuf:protobuf", |
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"@com_google_protobuf//:protoc_lib": "//third_party/protobuf:libprotoc", |
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} |
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def map_dep(dep): |
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if is_bazel: |
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return dep |
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else: |
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return google3_dep_map[dep] |
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|
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# upb_proto_library() rule |
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|
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def _remove_up(string): |
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if string.startswith("../"): |
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string = string[3:] |
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pos = string.find("/") |
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string = string[pos + 1:] |
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return _remove_suffix(string, ".proto") |
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def _upb_proto_srcs_impl(ctx, suffix): |
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sources = [] |
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outs = [] |
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include_dirs = {} |
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for dep in ctx.attr.deps: |
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if hasattr(dep, "proto"): |
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for src in dep.proto.transitive_sources: |
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sources.append(src) |
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include_dir = _remove_suffix(src.path, _remove_up(src.short_path) + "." + src.extension) |
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if include_dir: |
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include_dirs[include_dir] = True |
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outs.append(ctx.actions.declare_file(_remove_up(src.short_path) + suffix + ".h")) |
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outs.append(ctx.actions.declare_file(_remove_up(src.short_path) + suffix + ".c")) |
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outdir = _remove_suffix(outs[-1].path, _remove_up(src.short_path) + suffix + ".c") |
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source_paths = [d.path for d in sources] |
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include_args = ["-I" + root for root in include_dirs.keys()] |
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ctx.actions.run( |
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inputs = [ctx.executable.upbc] + sources, |
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outputs = outs, |
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executable = ctx.executable.protoc, |
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arguments = ["--upb_out", outdir, "--plugin=protoc-gen-upb=" + ctx.executable.upbc.path] + include_args + source_paths, |
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progress_message = "Generating upb protos", |
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) |
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return [DefaultInfo(files = depset(outs))] |
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def _upb_proto_library_srcs_impl(ctx): |
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return _upb_proto_srcs_impl(ctx, ".upb") |
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def _upb_proto_reflection_library_srcs_impl(ctx): |
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return _upb_proto_srcs_impl(ctx, ".upbdefs") |
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_upb_proto_library_srcs = rule( |
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attrs = { |
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"upbc": attr.label( |
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executable = True, |
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cfg = "host", |
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), |
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"protoc": attr.label( |
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executable = True, |
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cfg = "host", |
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default = map_dep("@com_google_protobuf//:protoc"), |
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), |
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"deps": attr.label_list(), |
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}, |
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implementation = _upb_proto_library_srcs_impl, |
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) |
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def upb_proto_library(name, deps, upbc): |
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srcs_rule = name + "_srcs.cc" |
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_upb_proto_library_srcs( |
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name = srcs_rule, |
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upbc = upbc, |
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deps = deps, |
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) |
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native.cc_library( |
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name = name, |
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srcs = [":" + srcs_rule], |
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deps = [":upb"], |
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copts = ["-Ibazel-out/k8-fastbuild/bin"], |
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) |
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_upb_proto_reflection_library_srcs = rule( |
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attrs = { |
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"upbc": attr.label( |
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executable = True, |
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cfg = "host", |
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), |
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"protoc": attr.label( |
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executable = True, |
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cfg = "host", |
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default = map_dep("@com_google_protobuf//:protoc"), |
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), |
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"deps": attr.label_list(), |
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}, |
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implementation = _upb_proto_reflection_library_srcs_impl, |
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) |
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def upb_proto_reflection_library(name, deps, upbc): |
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srcs_rule = name + "_defsrcs.cc" |
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_upb_proto_reflection_library_srcs( |
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name = srcs_rule, |
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upbc = upbc, |
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deps = deps, |
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) |
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native.cc_library( |
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name = name, |
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srcs = [":" + srcs_rule], |
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deps = [":upb", ":reflection"], |
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copts = ["-Ibazel-out/k8-fastbuild/bin"], |
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) |
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def licenses(*args): |
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# No-op (for Google-internal usage). |
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pass
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