| def my_rule_impl(ctx): |
| return struct() |
| |
| def exercise_the_api(): |
| var1 = config_common.FeatureFlagInfo |
| var2 = platform_common.TemplateVariableInfo |
| var3 = repository_rule(implementation = my_rule_impl) |
| var4 = testing.ExecutionInfo({}) |
| |
| exercise_the_api() |
| |
| MyInfo = provider( |
| fields = { |
| "foo": "Something foo-related.", |
| "bar": "Something bar-related.", |
| }, |
| ) |
| |
| my_info = MyInfo(foo="x", bar="y") |
| |
| my_rule = rule( |
| implementation = my_rule_impl, |
| doc = "This rule exercises some of the build API.", |
| attrs = { |
| "src": attr.label( |
| doc = "The source file.", |
| allow_files = [".bzl"]), |
| "deps": attr.label_list( |
| doc = """ |
| A list of dependencies. |
| These dependencies better provide MyInfo! |
| ...or else. |
| """, |
| providers = [MyInfo], |
| allow_files = False), |
| "tool": attr.label( |
| doc = "The location of the tool to use.", |
| allow_files = True, |
| default = Label("//foo/bar/baz:target",), |
| cfg = "host", |
| executable = True), |
| "out": attr.output( |
| doc = "The output file.", |
| mandatory = True), |
| "extra_arguments": attr.string_list(default = []), |
| } |
| ) |
