fix: ensure out_file does not show up in source file query of write_source_file so that it can be used with ibazel (#52)
This commit is contained in:
Greg Magolan
GitHub
parent
bda5c632be
commit
3599515632
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@ -7,7 +7,8 @@ Public API for write_source_files
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## write_source_files
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<pre>
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write_source_files(<a href="#write_source_files-name">name</a>, <a href="#write_source_files-files">files</a>, <a href="#write_source_files-additional_update_targets">additional_update_targets</a>, <a href="#write_source_files-suggested_update_target">suggested_update_target</a>, <a href="#write_source_files-kwargs">kwargs</a>)
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write_source_files(<a href="#write_source_files-name">name</a>, <a href="#write_source_files-files">files</a>, <a href="#write_source_files-additional_update_targets">additional_update_targets</a>, <a href="#write_source_files-suggested_update_target">suggested_update_target</a>, <a href="#write_source_files-diff_test">diff_test</a>,
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<a href="#write_source_files-kwargs">kwargs</a>)
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</pre>
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Write to one or more files or folders in the source tree. Stamp out tests that ensure the sources exist and are up to date.
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@ -89,6 +90,7 @@ If you have many sources that you want to update as a group, we recommend wrappi
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| <a id="write_source_files-files"></a>files | A dict where the keys are source files or folders to write to and the values are labels pointing to the desired content. Sources must be within the same bazel package as the target. | <code>{}</code> |
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| <a id="write_source_files-additional_update_targets"></a>additional_update_targets | (Optional) List of other write_source_file or other executable updater targets to call in the same run | <code>[]</code> |
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| <a id="write_source_files-suggested_update_target"></a>suggested_update_target | (Optional) Label of the write_source_file target to suggest running when files are out of date | <code>None</code> |
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| <a id="write_source_files-diff_test"></a>diff_test | (Optional) Generate a test target to check that the source file(s) exist and are up to date with the generated files(s). | <code>True</code> |
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| <a id="write_source_files-kwargs"></a>kwargs | Other common named parameters such as <code>tags</code> or <code>visibility</code> | none |
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@ -1,11 +1,135 @@
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"write_source_file implementation"
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load("//lib:utils.bzl", "is_external_label")
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load(":directory_path.bzl", "DirectoryPathInfo")
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load(":diff_test.bzl", _diff_test = "diff_test")
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load(":fail_with_message_test.bzl", "fail_with_message_test")
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load(":utils.bzl", "utils")
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def write_source_file(
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name,
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in_file = None,
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out_file = None,
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additional_update_targets = [],
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suggested_update_target = None,
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diff_test = True,
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**kwargs):
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"""Write a file or folder to the output tree. Stamp out tests that ensure the sources exist and are up to date.
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Args:
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name: Name of the executable target that creates or updates the source file
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in_file: File to use as the desired content to write to out_file. If in_file is a TreeArtifact then entire directory contents are copied.
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out_file: The file to write to in the source tree. Must be within the same bazel package as the target.
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additional_update_targets: List of other write_source_file or other executable updater targets to call in the same run
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suggested_update_target: Label of the write_source_file target to suggest running when files are out of date
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diff_test: Generate a test target to check that the source file(s) exist and are up to date with the generated files(s).
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**kwargs: Other common named parameters such as `tags` or `visibility`
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"""
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if out_file:
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if not in_file:
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fail("in_file must be specified if out_file is set")
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if in_file:
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if not out_file:
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fail("out_file must be specified if in_file is set")
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if in_file and out_file:
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in_file = utils.to_label(in_file)
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out_file = utils.to_label(out_file)
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if utils.is_external_label(out_file):
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fail("out file %s must be in the user workspace" % out_file)
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if out_file.package != native.package_name():
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fail("out file %s (in package '%s') must be a source file within the target's package: '%s'" % (out_file, out_file.package, native.package_name()))
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_write_source_file(
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name = name,
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in_file = in_file,
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out_file = out_file.name if out_file else None,
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additional_update_targets = additional_update_targets,
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is_windows = select({
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"@bazel_tools//src/conditions:host_windows": True,
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"//conditions:default": False,
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}),
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**kwargs
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)
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if not in_file or not out_file or not diff_test:
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return
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out_file_missing = _is_file_missing(out_file)
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test_target_name = "%s_test" % name
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if out_file_missing:
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if suggested_update_target == None:
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message = """
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%s does not exist. To create & update this file, run:
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bazel run //%s:%s
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""" % (out_file, native.package_name(), name)
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else:
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message = """
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%s does not exist. To create & update this and other generated files, run:
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bazel run %s
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To create an update *only* this file, run:
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bazel run //%s:%s
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""" % (out_file, utils.to_label(suggested_update_target), native.package_name(), name)
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# Stamp out a test that fails with a helpful message when the source file doesn't exist.
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# Note that we cannot simply call fail() here since it will fail during the analysis
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# phase and prevent the user from calling bazel run //update/the:file.
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fail_with_message_test(
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name = test_target_name,
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message = message,
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visibility = kwargs.get("visibility"),
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tags = kwargs.get("tags"),
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)
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else:
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if suggested_update_target == None:
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message = """
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%s is out of date. To update this file, run:
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bazel run //%s:%s
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""" % (out_file, native.package_name(), name)
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else:
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message = """
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%s is out of date. To update this and other generated files, run:
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bazel run %s
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To update *only* this file, run:
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bazel run //%s:%s
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""" % (out_file, utils.to_label(suggested_update_target), native.package_name(), name)
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# Stamp out a diff test the check that the source file is up to date
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_diff_test(
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name = test_target_name,
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file1 = in_file,
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file2 = out_file,
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failure_message = message,
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**kwargs
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)
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_write_source_file_attrs = {
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"in_file": attr.label(allow_files = True, mandatory = False),
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"out_file": attr.label(allow_files = True, mandatory = False),
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# out_file is intentionally an attr.string() and not a attr.label(). This is so that
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# bazel query 'kind("source file", deps(//path/to:target))' does not return
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# out_file in the list of source file deps. ibazel uses this query to determine
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# which source files to watch so if the out_file is returned then ibazel watches
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# and it goes into an infinite update, notify loop when running this target.
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# See https://github.com/aspect-build/bazel-lib/pull/52 for more context.
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"out_file": attr.string(mandatory = False),
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"additional_update_targets": attr.label_list(cfg = "host", mandatory = False),
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"is_windows": attr.bool(mandatory = True),
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}
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@ -120,17 +244,10 @@ if exist "%in%\\*" (
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return updater
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def _write_source_file_impl(ctx):
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if ctx.attr.out_file:
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if not ctx.attr.in_file:
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fail("in_file must be specified if out_file is set")
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if is_external_label(ctx.attr.out_file.label):
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fail("out file %s must be in the user workspace" % ctx.attr.out_file.label)
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if ctx.attr.out_file.label.package != ctx.label.package:
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fail("out file %s (in package '%s') must be a source file within the target's package: '%s'" % (ctx.attr.out_file.label, ctx.attr.out_file.label.package, ctx.label.package))
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if ctx.attr.out_file and not ctx.attr.in_file:
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fail("in_file must be specified if out_file is set")
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if ctx.attr.in_file and not ctx.attr.out_file:
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if not ctx.attr.in_file:
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fail("out_file must be specified if in_file is set")
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fail("out_file must be specified if in_file is set")
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paths = []
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runfiles = []
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@ -149,12 +266,7 @@ def _write_source_file_impl(ctx):
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else:
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fail("in file %s must be a single file or a target that provides DefaultOutputPathInfo or DirectoryPathInfo" % ctx.attr.in_file.label)
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if len(ctx.files.out_file) != 1:
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fail("out file %s must be a single file or directory" % ctx.attr.out_file.label)
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elif not ctx.files.out_file[0].is_source:
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fail("out file %s must be a source file or directory, not a generated file" % ctx.attr.out_file.label)
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out_path = ctx.files.out_file[0].short_path
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out_path = "/".join([ctx.label.package, ctx.attr.out_file])
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paths.append((in_path, out_path))
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if ctx.attr.is_windows:
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@ -180,7 +292,19 @@ def _write_source_file_impl(ctx):
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),
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]
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write_source_file_lib = struct(
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_write_source_file = rule(
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attrs = _write_source_file_attrs,
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implementation = _write_source_file_impl,
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executable = True,
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)
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def _is_file_missing(label):
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"""Check if a file is missing by passing its relative path through a glob()
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Args
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label: the file's label
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"""
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file_abs = "%s/%s" % (label.package, label.name)
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file_rel = file_abs[len(native.package_name()) + 1:]
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file_glob = native.glob([file_rel], exclude_directories = 0)
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return len(file_glob) == 0
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@ -0,0 +1 @@
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dist.js
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@ -119,3 +119,16 @@ write_source_files(
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"g2.js": ":g-desired",
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},
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)
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genrule(
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name = "dist",
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outs = ["dist.js"],
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cmd = "echo 'dist' > $@",
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)
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# ibazel run //lib/tests/write_source_files:write_dist
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write_source_files(
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name = "write_dist",
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diff_test = False,
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files = {"dist.js": ":dist"},
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)
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@ -1,15 +1,9 @@
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"""Tests for write_source_files"""
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# Inspired by https://github.com/cgrindel/bazel-starlib/blob/main/updatesrc/private/updatesrc_update_test.bzl
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load("//lib/private:write_source_file.bzl", _lib = "write_source_file_lib")
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load("//lib/private:write_source_file.bzl", _write_source_file = "write_source_file")
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load("//lib/private:directory_path.bzl", "DirectoryPathInfo")
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_write_source_file = rule(
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attrs = _lib.attrs,
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implementation = _lib.implementation,
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executable = True,
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)
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def _impl_sh(ctx, in_file_path, out_file_path):
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test = ctx.actions.declare_file(
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ctx.label.name + "_test.sh",
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@ -180,10 +174,7 @@ def write_source_file_test(name, in_file, out_file):
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name = name + "_updater",
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in_file = in_file,
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out_file = out_file,
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is_windows = select({
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"@bazel_tools//src/conditions:host_windows": True,
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"//conditions:default": False,
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}),
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diff_test = False,
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)
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# Note that for testing we update the source files in the sandbox,
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@ -2,19 +2,16 @@
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load(
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"//lib/private:write_source_file.bzl",
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_lib = "write_source_file_lib",
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)
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load("//lib:utils.bzl", _to_label = "to_label")
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load("//lib/private:diff_test.bzl", _diff_test = "diff_test")
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load("//lib/private:fail_with_message_test.bzl", "fail_with_message_test")
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_write_source_file = rule(
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attrs = _lib.attrs,
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implementation = _lib.implementation,
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executable = True,
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_write_source_file = "write_source_file",
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)
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def write_source_files(name, files = {}, additional_update_targets = [], suggested_update_target = None, **kwargs):
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def write_source_files(
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name,
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files = {},
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additional_update_targets = [],
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suggested_update_target = None,
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diff_test = True,
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**kwargs):
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"""Write to one or more files or folders in the source tree. Stamp out tests that ensure the sources exist and are up to date.
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Usage:
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@ -90,6 +87,7 @@ def write_source_files(name, files = {}, additional_update_targets = [], suggest
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Sources must be within the same bazel package as the target.
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additional_update_targets: (Optional) List of other write_source_file or other executable updater targets to call in the same run
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suggested_update_target: (Optional) Label of the write_source_file target to suggest running when files are out of date
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diff_test: (Optional) Generate a test target to check that the source file(s) exist and are up to date with the generated files(s).
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**kwargs: Other common named parameters such as `tags` or `visibility`
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"""
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@ -98,9 +96,6 @@ def write_source_files(name, files = {}, additional_update_targets = [], suggest
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for i, pair in enumerate(files.items()):
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out_file, in_file = pair
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in_file = _to_label(in_file)
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out_file = _to_label(out_file)
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if single_update_target:
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update_target_name = name
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else:
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@ -113,102 +108,16 @@ def write_source_files(name, files = {}, additional_update_targets = [], suggest
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in_file = in_file,
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out_file = out_file,
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additional_update_targets = additional_update_targets if single_update_target else [],
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is_windows = select({
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"@bazel_tools//src/conditions:host_windows": True,
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"//conditions:default": False,
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}),
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visibility = kwargs.get("visibility"),
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tags = kwargs.get("tags"),
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suggested_update_target = suggested_update_target,
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diff_test = diff_test,
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**kwargs
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)
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out_file_missing = _is_file_missing(out_file)
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if single_update_target:
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test_target_name = "%s_test" % name
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else:
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test_target_name = "%s_%d_test" % (name, i)
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if out_file_missing:
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if suggested_update_target == None:
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message = """
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%s does not exist. To create & update this file, run:
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bazel run //%s:%s
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""" % (out_file, native.package_name(), name)
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else:
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message = """
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%s does not exist. To create & update this and other generated files, run:
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bazel run %s
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To create an update *only* this file, run:
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bazel run //%s:%s
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""" % (out_file, _to_label(suggested_update_target), native.package_name(), name)
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# Stamp out a test that fails with a helpful message when the source file doesn't exist.
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# Note that we cannot simply call fail() here since it will fail during the analysis
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# phase and prevent the user from calling bazel run //update/the:file.
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fail_with_message_test(
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name = test_target_name,
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message = message,
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visibility = kwargs.get("visibility"),
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tags = kwargs.get("tags"),
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)
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else:
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if suggested_update_target == None:
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message = """
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%s is out of date. To update this file, run:
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bazel run //%s:%s
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""" % (out_file, native.package_name(), name)
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else:
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message = """
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%s is out of date. To update this and other generated files, run:
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bazel run %s
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To update *only* this file, run:
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bazel run //%s:%s
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""" % (out_file, _to_label(suggested_update_target), native.package_name(), name)
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# Stamp out a diff test the check that the source file is up to date
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_diff_test(
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name = test_target_name,
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file1 = in_file,
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file2 = out_file,
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failure_message = message,
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**kwargs
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)
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if not single_update_target:
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_write_source_file(
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name = name,
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additional_update_targets = update_targets + additional_update_targets,
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is_windows = select({
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"@bazel_tools//src/conditions:host_windows": True,
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"//conditions:default": False,
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}),
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visibility = kwargs.get("visibility"),
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tags = kwargs.get("tags"),
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suggested_update_target = suggested_update_target,
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diff_test = False,
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**kwargs
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)
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def _is_file_missing(label):
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"""Check if a file is missing by passing its relative path through a glob()
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Args
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label: the file's label
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"""
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file_abs = "%s/%s" % (label.package, label.name)
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file_rel = file_abs[len(native.package_name()) + 1:]
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file_glob = native.glob([file_rel], exclude_directories = 0)
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return len(file_glob) == 0
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