70 lines
2.2 KiB
Python
70 lines
2.2 KiB
Python
"""Stateify is a tool for generating state wrappers for Go types.
|
|
|
|
The go_stateify rule is used to generate a file that will appear in a Go
|
|
target; the output file should appear explicitly in a srcs list. For example:
|
|
|
|
go_stateify(
|
|
name = "foo_state",
|
|
srcs = ["foo.go"],
|
|
out = "foo_state.go",
|
|
package = "foo",
|
|
)
|
|
|
|
go_library(
|
|
name = "foo",
|
|
srcs = [
|
|
"foo.go",
|
|
"foo_state.go",
|
|
],
|
|
deps = [
|
|
"//pkg/state",
|
|
],
|
|
)
|
|
"""
|
|
|
|
def _go_stateify_impl(ctx):
|
|
"""Implementation for the stateify tool."""
|
|
output = ctx.outputs.out
|
|
|
|
# Run the stateify command.
|
|
args = ["-output=%s" % output.path]
|
|
args += ["-pkg=%s" % ctx.attr.package]
|
|
if ctx.attr._statepkg:
|
|
args += ["-statepkg=%s" % ctx.attr._statepkg]
|
|
if ctx.attr.imports:
|
|
args += ["-imports=%s" % ",".join(ctx.attr.imports)]
|
|
args += ["--"]
|
|
for src in ctx.attr.srcs:
|
|
args += [f.path for f in src.files]
|
|
ctx.actions.run(
|
|
inputs = ctx.files.srcs,
|
|
outputs = [output],
|
|
mnemonic = "GoStateify",
|
|
progress_message = "Generating state library %s" % ctx.label,
|
|
arguments = args,
|
|
executable = ctx.executable._tool,
|
|
)
|
|
|
|
"""
|
|
Generates save and restore logic from a set of Go files.
|
|
|
|
|
|
Args:
|
|
name: the name of the rule.
|
|
srcs: the input source files. These files should include all structs in the package that need to be saved.
|
|
imports: an optional list of extra non-aliased, Go-style absolute import paths.
|
|
out: the name of the generated file output. This must not conflict with any other files and must be added to the srcs of the relevant go_library.
|
|
package: the package name for the input sources.
|
|
"""
|
|
go_stateify = rule(
|
|
implementation = _go_stateify_impl,
|
|
attrs = {
|
|
"srcs": attr.label_list(mandatory = True, allow_files = True),
|
|
"imports": attr.string_list(mandatory = False),
|
|
"package": attr.string(mandatory = True),
|
|
"out": attr.output(mandatory = True),
|
|
"_tool": attr.label(executable = True, cfg = "host", default = Label("//tools/go_stateify:stateify")),
|
|
"_statepkg": attr.string(default = "gvisor.googlesource.com/gvisor/pkg/state"),
|
|
},
|
|
)
|