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| <h1 class="page-title" id="modules.Label">Label</h1> |
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| A BUILD target identifier. |
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| <h2>Members</h2> |
| <ul> |
| <li> |
| <a href="#Label">Label</a> |
| </li> |
| <li> |
| <a href="#name">name</a> |
| </li> |
| <li> |
| <a href="#package">package</a> |
| </li> |
| <li> |
| <a href="#relative">relative</a> |
| </li> |
| <li> |
| <a href="#workspace_name">workspace_name</a> |
| </li> |
| <li> |
| <a href="#workspace_root">workspace_root</a> |
| </li> |
| </ul> |
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| <h2 id="Label">Label</h2> |
| <p><pre class="rule-signature"><a class="anchor" href="Label.html">Label</a> Label(input)</pre></p> |
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| Converts a label string into a <code>Label</code> object, in the context of the package where the calling <code>.bzl</code> source file lives. If the given value is already a <code>Label</code>, it is returned unchanged.<p>For macros, a related function, <code><a href='native#package_relative_label'>native.package_relative_label()</a></code>, converts the input into a <code>Label</code> in the context of the package currently being constructed. Use that function to mimic the string-to-label conversion that is automatically done by label-valued rule attributes. |
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| <!-- hide-from-toc is a class used by DevSite for the public Bazel site |
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| <h3 class="hide-from-toc">Parameters</h3> |
| <table class="table table-bordered table-condensed table-params"> |
| <colgroup> |
| <col class="col-param"> |
| <col class="param-description"> |
| </colgroup> |
| <thead> |
| <tr> |
| <th>Parameter</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td id="Label.input"> |
| <code>input</code> |
| </td> |
| <td> |
| <code><a class="anchor" href="string.html">string</a>; or <a class="anchor" href="Label.html">Label</a></code>; |
| required<br/> |
| The input label string or Label object. If a Label object is passed, it's returned as is. |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| <h2 id="name">name</h2> |
| <p><pre class="rule-signature"><a class="anchor" href="string.html">string</a> Label.name</pre></p> |
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| The name of this label within the package. For instance:<br><pre class=language-python>Label("//pkg/foo:abc").name == "abc"</pre> |
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| <h2 id="package">package</h2> |
| <p><pre class="rule-signature"><a class="anchor" href="string.html">string</a> Label.package</pre></p> |
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| The package part of this label. For instance:<br><pre class=language-python>Label("//pkg/foo:abc").package == "pkg/foo"</pre> |
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| <h2 id="relative">relative</h2> |
| <p><pre class="rule-signature"><a class="anchor" href="Label.html">Label</a> Label.relative(relName)</pre></p> |
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| Resolves a label that is either absolute (starts with <code>//</code>) or relative to the current package. If this label is in a remote repository, the argument will be resolved relative to that repository. If the argument contains a repository name, the current label is ignored and the argument is returned as-is, except that the repository name is rewritten if it is in the current repository mapping. Reserved labels will also be returned as-is.<br>For example:<br><pre class=language-python> |
| Label("//foo/bar:baz").relative(":quux") == Label("//foo/bar:quux") |
| Label("//foo/bar:baz").relative("//wiz:quux") == Label("//wiz:quux") |
| Label("@repo//foo/bar:baz").relative("//wiz:quux") == Label("@repo//wiz:quux") |
| Label("@repo//foo/bar:baz").relative("//visibility:public") == Label("//visibility:public") |
| Label("@repo//foo/bar:baz").relative("@other//wiz:quux") == Label("@other//wiz:quux") |
| </pre><p>If the repository mapping passed in is <code>{'@other' : '@remapped'}</code>, then the following remapping will take place:<br><pre class=language-python> |
| Label("@repo//foo/bar:baz").relative("@other//wiz:quux") == Label("@remapped//wiz:quux") |
| </pre> |
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| <!-- hide-from-toc is a class used by DevSite for the public Bazel site |
| (https://developers.google.com/devsite/reference/styles/headings#hide_headings_from_the_toc) --> |
| <h3 class="hide-from-toc">Parameters</h3> |
| <table class="table table-bordered table-condensed table-params"> |
| <colgroup> |
| <col class="col-param"> |
| <col class="param-description"> |
| </colgroup> |
| <thead> |
| <tr> |
| <th>Parameter</th> |
| <th>Description</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td id="relative.relName"> |
| <code>relName</code> |
| </td> |
| <td> |
| required<br/> |
| The label that will be resolved relative to this one. |
| </td> |
| </tr> |
| </tbody> |
| </table> |
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| <h2 id="workspace_name">workspace_name</h2> |
| <p><pre class="rule-signature"><a class="anchor" href="string.html">string</a> Label.workspace_name</pre></p> |
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| The repository part of this label. For instance, <pre class=language-python>Label("@foo//bar:baz").workspace_name == "foo"</pre> |
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| <h2 id="workspace_root">workspace_root</h2> |
| <p><pre class="rule-signature"><a class="anchor" href="string.html">string</a> Label.workspace_root</pre></p> |
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| Returns the execution root for the workspace of this label, relative to the execroot. For instance:<br><pre class=language-python>Label("@repo//pkg/foo:abc").workspace_root == "external/repo"</pre> |
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