diff options
Diffstat (limited to 'tools/go_generics')
| -rw-r--r-- | tools/go_generics/defs.bzl | 172 |
1 files changed, 78 insertions, 94 deletions
diff --git a/tools/go_generics/defs.bzl b/tools/go_generics/defs.bzl index 0b2467805..214e0dfca 100644 --- a/tools/go_generics/defs.bzl +++ b/tools/go_generics/defs.bzl @@ -1,26 +1,26 @@ def _go_template_impl(ctx): - input = ctx.files.srcs - output = ctx.outputs.out - - args = ["-o=%s" % output.path] + [f.path for f in input] - - ctx.actions.run( - inputs = input, - outputs = [output], - mnemonic = "GoGenericsTemplate", - progress_message = "Building Go template %s" % ctx.label, - arguments = args, - executable = ctx.executable._tool, - ) - - return struct( - types = ctx.attr.types, - opt_types = ctx.attr.opt_types, - consts = ctx.attr.consts, - opt_consts = ctx.attr.opt_consts, - deps = ctx.attr.deps, - file = output, - ) + input = ctx.files.srcs + output = ctx.outputs.out + + args = ["-o=%s" % output.path] + [f.path for f in input] + + ctx.actions.run( + inputs = input, + outputs = [output], + mnemonic = "GoGenericsTemplate", + progress_message = "Building Go template %s" % ctx.label, + arguments = args, + executable = ctx.executable._tool, + ) + + return struct( + types = ctx.attr.types, + opt_types = ctx.attr.opt_types, + consts = ctx.attr.consts, + opt_consts = ctx.attr.opt_consts, + deps = ctx.attr.deps, + file = output, + ) """ Generates a Go template from a set of Go files. @@ -39,81 +39,73 @@ Args: opt_consts: the list of constants in the template that can but aren't required to be specified. deps: the list of dependencies. """ - go_template = rule( + implementation = _go_template_impl, attrs = { - "srcs": attr.label_list( - mandatory = True, - allow_files = True, - ), + "srcs": attr.label_list(mandatory = True, allow_files = True), "deps": attr.label_list(allow_files = True), "types": attr.string_list(), "opt_types": attr.string_list(), "consts": attr.string_list(), "opt_consts": attr.string_list(), - "_tool": attr.label( - executable = True, - cfg = "host", - default = Label("//tools/go_generics:go_merge"), - ), + "_tool": attr.label(executable = True, cfg = "host", default = Label("//tools/go_generics:go_merge")), }, outputs = { "out": "%{name}_template.go", }, - implementation = _go_template_impl, ) def _go_template_instance_impl(ctx): - template = ctx.attr.template - output = ctx.outputs.out - - # Check that all required types are defined. - for t in template.types: - if t not in ctx.attr.types: - fail("Missing value for type %s in %s" % (t, ctx.attr.template.label)) - - # Check that all defined types are expected by the template. - for t in ctx.attr.types: - if (t not in template.types) and (t not in template.opt_types): - fail("Type %s it not a parameter to %s" % (t, ctx.attr.template.label)) - - # Check that all required consts are defined. - for t in template.consts: - if t not in ctx.attr.consts: - fail("Missing value for constant %s in %s" % (t, ctx.attr.template.label)) - - # Check that all defined consts are expected by the template. - for t in ctx.attr.consts: - if (t not in template.consts) and (t not in template.opt_consts): - fail("Const %s it not a parameter to %s" % (t, ctx.attr.template.label)) - - # Build the argument list. - args = ["-i=%s" % template.file.path, "-o=%s" % output.path] - args += ["-p=%s" % ctx.attr.package] - - if len(ctx.attr.prefix) > 0: - args += ["-prefix=%s" % ctx.attr.prefix] - - if len(ctx.attr.suffix) > 0: - args += ["-suffix=%s" % ctx.attr.suffix] - - args += [("-t=%s=%s" % (p[0], p[1])) for p in ctx.attr.types.items()] - args += [("-c=%s=%s" % (p[0], p[1])) for p in ctx.attr.consts.items()] - args += [("-import=%s=%s" % (p[0], p[1])) for p in ctx.attr.imports.items()] - - ctx.actions.run( - inputs = [template.file], - outputs = [output], - mnemonic = "GoGenericsInstance", - progress_message = "Building Go template instance %s" % ctx.label, - arguments = args, - executable = ctx.executable._tool, - ) - - # TODO: How can we get the dependencies out? - return struct( - files = depset([output]) - ) + template = ctx.attr.template + output = ctx.outputs.out + + # Check that all required types are defined. + for t in template.types: + if t not in ctx.attr.types: + fail("Missing value for type %s in %s" % (t, ctx.attr.template.label)) + + # Check that all defined types are expected by the template. + for t in ctx.attr.types: + if (t not in template.types) and (t not in template.opt_types): + fail("Type %s it not a parameter to %s" % (t, ctx.attr.template.label)) + + # Check that all required consts are defined. + for t in template.consts: + if t not in ctx.attr.consts: + fail("Missing value for constant %s in %s" % (t, ctx.attr.template.label)) + + # Check that all defined consts are expected by the template. + for t in ctx.attr.consts: + if (t not in template.consts) and (t not in template.opt_consts): + fail("Const %s it not a parameter to %s" % (t, ctx.attr.template.label)) + + # Build the argument list. + args = ["-i=%s" % template.file.path, "-o=%s" % output.path] + args += ["-p=%s" % ctx.attr.package] + + if len(ctx.attr.prefix) > 0: + args += ["-prefix=%s" % ctx.attr.prefix] + + if len(ctx.attr.suffix) > 0: + args += ["-suffix=%s" % ctx.attr.suffix] + + args += [("-t=%s=%s" % (p[0], p[1])) for p in ctx.attr.types.items()] + args += [("-c=%s=%s" % (p[0], p[1])) for p in ctx.attr.consts.items()] + args += [("-import=%s=%s" % (p[0], p[1])) for p in ctx.attr.imports.items()] + + ctx.actions.run( + inputs = [template.file], + outputs = [output], + mnemonic = "GoGenericsInstance", + progress_message = "Building Go template instance %s" % ctx.label, + arguments = args, + executable = ctx.executable._tool, + ) + + # TODO: How can we get the dependencies out? + return struct( + files = depset([output]), + ) """ Instantiates a Go template by replacing all generic types with concrete ones. @@ -128,13 +120,10 @@ Args: imports: the map from imports used in types/consts to their import paths. package: the name of the package the instantiated template will be compiled into. """ - go_template_instance = rule( + implementation = _go_template_instance_impl, attrs = { - "template": attr.label( - mandatory = True, - providers = ["types"], - ), + "template": attr.label(mandatory = True, providers = ["types"]), "prefix": attr.string(), "suffix": attr.string(), "types": attr.string_dict(), @@ -142,11 +131,6 @@ go_template_instance = rule( "imports": attr.string_dict(), "package": attr.string(mandatory = True), "out": attr.output(mandatory = True), - "_tool": attr.label( - executable = True, - cfg = "host", - default = Label("//tools/go_generics"), - ), + "_tool": attr.label(executable = True, cfg = "host", default = Label("//tools/go_generics")), }, - implementation = _go_template_instance_impl, ) |