Create common build settings #154
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Create common simple build settings for people to use so they don't recreate these rules over and over again. This fulfills part of the SBC design doc: https://docs.google.com/document/d/1vc8v-kXjvgZOdQdnxPTaV0rrLxtP2XwnD2tAZlYJOqw/edit#bookmark=id.iiumwic0jphr
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Part of work for bazelbuild/bazel#5577 |
allevato
reviewed
May 14, 2019
rules/common_settings.bzl
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| build_setting = config.bool(), | ||
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| string_flag = rule( |
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Really excited to see this landing!
Drive-by comment (possibly for a future PR): it would be nice if the string_* flags took a list of acceptable values as an attribute, like attr.string does, where the implementation function would verify that the value is permitted. This would handle a common case without forcing rule authors who want this logic to write their own rule/validation.
thomasvl
reviewed
May 17, 2019
c-parsons
reviewed
May 28, 2019
+ link to full documentation + docstrings for rules/provider + "values" allowed values attr added to the string typed settings
fix missing :
c-parsons
reviewed
May 29, 2019
rules/common_settings.bzl
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| """ | ||
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| BuildSettingInfo = provider( | ||
| doc = """A singleton provider that contains the raw value of a build setting""", |
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nit: Triple quotes unnecessary if it's only a single line :)
(there are multiple such instances in this file)
rules/common_settings.bzl
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| def _impl(ctx): | ||
| return BuildSettingInfo(value = ctx.build_setting_value) | ||
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| int_flag = rule( | ||
| implementation = _impl, | ||
| build_setting = config.int(flag = True), | ||
| doc = """An int-typed build setting that is user settable""", |
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"user-settable" is a bit confusing, how about "{may, may not} be set on the command line" ?
This reverts commit 4345517.
c-parsons
approved these changes
Jun 11, 2019
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Create common simple build settings for people to use so they don't recreate these rules over and over again.
This fulfills part of the SBC design doc: https://docs.google.com/document/d/1vc8v-kXjvgZOdQdnxPTaV0rrLxtP2XwnD2tAZlYJOqw/edit#bookmark=id.iiumwic0jphr