68 lines
2.3 KiB
Python
68 lines
2.3 KiB
Python
"""Marshal is a tool for generating marshalling interfaces for Go types."""
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def _go_marshal_impl(ctx):
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"""Execute the go_marshal tool."""
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output = ctx.outputs.lib
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output_test = ctx.outputs.test
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output_test_unconditional = ctx.outputs.test_unconditional
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# Run the marshal command.
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args = ["-output=%s" % output.path]
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args.append("-pkg=%s" % ctx.attr.package)
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args.append("-output_test=%s" % output_test.path)
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args.append("-output_test_unconditional=%s" % output_test_unconditional.path)
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if ctx.attr.debug:
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args += ["-debug"]
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args += ["--"]
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for src in ctx.attr.srcs:
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args += [f.path for f in src.files.to_list()]
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ctx.actions.run(
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inputs = ctx.files.srcs,
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outputs = [output, output_test, output_test_unconditional],
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mnemonic = "GoMarshal",
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progress_message = "go_marshal: %s" % ctx.label,
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arguments = args,
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executable = ctx.executable._tool,
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)
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# Generates save and restore logic from a set of Go files.
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#
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# Args:
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# name: the name of the rule.
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# srcs: the input source files. These files should include all structs in the
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# package that need to be saved.
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# imports: an optional list of extra, non-aliased, Go-style absolute import
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# paths.
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# out: the name of the generated file output. This must not conflict with any
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# other files and must be added to the srcs of the relevant go_library.
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# package: the package name for the input sources.
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go_marshal = rule(
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implementation = _go_marshal_impl,
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attrs = {
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"srcs": attr.label_list(mandatory = True, allow_files = True),
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"imports": attr.string_list(mandatory = False),
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"package": attr.string(mandatory = True),
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"debug": attr.bool(doc = "enable debugging output from the go_marshal tool"),
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"_tool": attr.label(executable = True, cfg = "host", default = Label("//tools/go_marshal:go_marshal")),
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},
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outputs = {
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"lib": "%{name}_unsafe.go",
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"test": "%{name}_test.go",
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"test_unconditional": "%{name}_unconditional_test.go",
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},
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)
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# marshal_deps are the dependencies requied by generated code.
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marshal_deps = [
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"//pkg/gohacks",
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"//pkg/hostarch",
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"//pkg/marshal",
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]
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# marshal_test_deps are required by test targets.
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marshal_test_deps = [
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"//tools/go_marshal/analysis",
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]
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