java_common

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Utilities for Java compilation support in Starlark.

Members

BootClassPathInfo

Provider java_common.BootClassPathInfo

The provider used to supply bootclasspath information

compile

struct java_common.compile(ctx, *, source_jars=[], source_files=[], output, output_source_jar=None, javac_opts=[], deps=[], runtime_deps=[], exports=[], plugins=[], exported_plugins=[], native_libraries=[], annotation_processor_additional_inputs=[], annotation_processor_additional_outputs=[], strict_deps='ERROR', java_toolchain, bootclasspath=None, host_javabase=None, sourcepath=[], resources=[], resource_jars=[], classpath_resources=[], neverlink=False, enable_annotation_processing=True, enable_compile_jar_action=True, add_exports=[], add_opens=[])

Compiles Java source files/jars from the implementation of a Starlark rule and returns a provider that represents the results of the compilation and can be added to the set of providers emitted by this rule.

Parameters

Parameter Description
ctx required
The rule context.
source_jars sequence of Files; default is []
A list of the jars to be compiled. At least one of source_jars or source_files should be specified.
source_files sequence of Files; default is []
A list of the Java source files to be compiled. At least one of source_jars or source_files should be specified.
output required
output_source_jar File; or None; default is None
The output source jar. Optional. Defaults to `{output_jar}-src.jar` if unset.
javac_opts sequence of strings; default is []
A list of the desired javac options. Optional.
deps sequence of structs; default is []
A list of dependencies. Optional.
runtime_deps sequence of structs; default is []
A list of runtime dependencies. Optional.
exports sequence of structs; default is []
A list of exports. Optional.
plugins sequence of structs; or sequence of structs; default is []
A list of plugins. Optional.
exported_plugins sequence of structs; or sequence of structs; default is []
A list of exported plugins. Optional.
native_libraries sequence of CcInfos; default is []
CC native library dependencies that are needed for this library.
annotation_processor_additional_inputs sequence of Files; default is []
A list of inputs that the Java compilation action will take in addition to the Java sources for annotation processing.
annotation_processor_additional_outputs sequence of Files; default is []
A list of outputs that the Java compilation action will output in addition to the class jar from annotation processing.
strict_deps default is 'ERROR'
A string that specifies how to handle strict deps. Possible values: 'OFF', 'ERROR', 'WARN' and 'DEFAULT'. For more details see /docs/user-manual#flag--strict_java_deps. By default 'ERROR'.
java_toolchain required
A JavaToolchainInfo to be used for this compilation. Mandatory.
bootclasspath default is None
A BootClassPathInfo to be used for this compilation. If present, overrides the bootclasspath associated with the provided java_toolchain. Optional.
host_javabase default is None
Deprecated. This parameter is deprecated and will be removed soon. Please do not depend on it. It is disabled with --+incompatible_java_common_parameters. Use this flag to verify your code is compatible with its imminent removal.
Deprecated: You can drop this parameter (host_javabase is provided with java_toolchain)
sourcepath sequence of Files; default is []
resources sequence of Files; default is []
resource_jars sequence of Files; default is []
classpath_resources sequence of Files; default is []
default is False
enable_annotation_processing default is True
Disables annotation processing in this compilation, causing any annotation processors provided in plugins or in exported_plugins of deps to be ignored.
enable_compile_jar_action default is True
Enables header compilation or ijar creation. If set to False, it forces use of the full class jar in the compilation classpaths of any dependants. Doing so is intended for use by non-library targets such as binaries that do not have dependants.
add_exports sequence of strings; default is []
Allow this library to access the given /. Optional.
add_opens sequence of strings; default is []
Allow this library to reflectively access the given /. Optional.

JavaRuntimeInfo

Provider java_common.JavaRuntimeInfo

The key used to retrieve the provider that contains information about the Java runtime being used.

JavaToolchainInfo

Provider java_common.JavaToolchainInfo

The key used to retrieve the provider that contains information about the Java toolchain being used.

merge

struct java_common.merge(providers)

Merges the given providers into a single JavaInfo.

Parameters

Parameter Description
providers sequence of structs; required
The list of providers to merge.

pack_sources

File java_common.pack_sources(actions, *, output_jar=None, output_source_jar=None, sources=[], source_jars=[], java_toolchain, host_javabase=None)

Packs sources and source jars into a single source jar file. The return value is typically passed to

JavaInfo#source_jar

.At least one of parameters output_jar or output_source_jar is required.

Parameters

Parameter Description
actions required
ctx.actions
output_jar File; or None; default is None
Deprecated. This parameter is deprecated and will be removed soon. Please do not depend on it. It is disabled with --+incompatible_java_common_parameters. Use this flag to verify your code is compatible with its imminent removal.
Deprecated: The output jar of the rule. Used to name the resulting source jar. The parameter sets output_source_jar parameter to `{output_jar}-src.jar`.Use output_source_jar parameter directly instead.
output_source_jar File; or None; default is None
The output source jar.
sources sequence of Files; default is []
A list of Java source files to be packed into the source jar.
source_jars sequence of Files; default is []
A list of source jars to be packed into the source jar.
java_toolchain required
A JavaToolchainInfo to used to find the ijar tool.
host_javabase default is None
Deprecated. This parameter is deprecated and will be removed soon. Please do not depend on it. It is disabled with --+incompatible_java_common_parameters. Use this flag to verify your code is compatible with its imminent removal.
Deprecated: You can drop this parameter (host_javabase is provided with java_toolchain)

run_ijar

File java_common.run_ijar(actions, *, jar, target_label=None, java_toolchain)

Runs ijar on a jar, stripping it of its method bodies. This helps reduce rebuilding of dependent jars during any recompiles consisting only of simple changes to method implementations. The return value is typically passed to JavaInfo#compile_jar.

Parameters

Parameter Description
actions required
ctx.actions
jar required
The jar to run ijar on.
target_label Label; or None; default is None
A target label to stamp the jar with. Used for add_dep support. Typically, you would pass ctx.label to stamp the jar with the current rule's label.
java_toolchain required
A JavaToolchainInfo to used to find the ijar tool.

stamp_jar

File java_common.stamp_jar(actions, *, jar, target_label, java_toolchain)

Stamps a jar with a target label for add_dep support. The return value is typically passed to JavaInfo#compile_jar. Prefer to use run_ijar when possible.

Parameters

Parameter Description
actions required
ctx.actions
jar required
The jar to run stamp_jar on.
target_label required
A target label to stamp the jar with. Used for add_dep support. Typically, you would pass ctx.label to stamp the jar with the current rule's label.
java_toolchain required
A JavaToolchainInfo to used to find the stamp_jar tool.