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rules_bison

Bazel rules for GNU Bison.

bison

bison(name, bison_options, skeleton, src)

Generate source code for a Bison parser.

This rule exists for special cases where the build needs to perform further modification of the generated .c / .h before compilation. Most users will find the bison_cc_library rule more convenient.

Example

load("@rules_bison//bison:bison.bzl", "bison")

bison(
    name = "hello",
    src = "hello.y",
)

ATTRIBUTES

Name Description Type Mandatory Default
name A unique name for this target. Name required
bison_options Additional options to pass to the bison command.

These will be added to the command args immediately before the source file.		 List of strings optional []
skeleton Specify the skeleton to use.

This file is used as a template for rendering the generated parser. See the Bison documentation regarding the %skeleton directive for more details.		 Label optional None
src A Bison source file.

The source's file extension will determine whether Bison operates in C or C++ mode:
  • Inputs with file extension .y generate outputs {name}.c and {name}.h.
  • Inputs with file extension .yy, .y++, .yxx, or .ypp generate outputs {name}.cc and {name}.h.
Label required

bison_cc_library

bison_cc_library(name, bison_options, deps, include_prefix, linkstatic, skeleton, src,
                 strip_include_prefix)

Generate a C/C++ library for a Bison parser.

Verbose descriptions of the parser are available in output group bison_report.

Example

load("@rules_bison//bison:bison.bzl", "bison_cc_library")

bison_cc_library(
    name = "hello_lib",
    src = "hello.y",
)

cc_binary(
    name = "hello",
    srcs = ["hello_main.c"],
    deps = [":hello_lib"],
)

ATTRIBUTES

Name Description Type Mandatory Default
name A unique name for this target. Name required
bison_options Additional options to pass to the bison command.

These will be added to the command args immediately before the source file.		 List of strings optional []
deps A list of other C/C++ libraries to depend on. List of labels optional []
include_prefix A prefix to add to the path of the generated header.

See cc_library.include_prefix for more details.		 String optional ""
linkstatic Disable creation of a shared library output.

See cc_library.linkstatic for more details.		 Boolean optional False
skeleton Specify the skeleton to use.

This file is used as a template for rendering the generated parser. See the Bison documentation regarding the %skeleton directive for more details.		 Label optional None
src A Bison source file.

The source's file extension will determine whether Bison operates in C or C++ mode:
  • Inputs with file extension .y generate outputs {name}.c and {name}.h.
  • Inputs with file extension .yy, .y++, .yxx, or .ypp generate outputs {name}.cc and {name}.h.
Label required
strip_include_prefix A prefix to strip from the path of the generated header.

See cc_library.strip_include_prefix for more details.		 String optional ""

bison_java_library

bison_java_library(name, bison_options, deps, skeleton, src)

Generate a Java library for a Bison parser.

Verbose descriptions of the parser are available in output group bison_report.

Example

load("@rules_bison//bison:bison.bzl", "bison_java_library")

bison_java_library(
    name = "HelloParser",
    src = "hello.y",
)

java_binary(
    name = "HelloMain",
    srcs = ["HelloMain.java"],
    main_class = "HelloMain",
    deps = [":HelloParser"],
)

ATTRIBUTES

Name Description Type Mandatory Default
name A unique name for this target. Name required
bison_options Additional options to pass to the bison command.

These will be added to the command args immediately before the source file.		 List of strings optional []
deps A list of other Java libraries to depend on. List of labels optional []
skeleton Specify the skeleton to use.

This file is used as a template for rendering the generated parser. See the Bison documentation regarding the %skeleton directive for more details.		 Label optional None
src A Bison source file. Label required

bison_repository

bison_repository(name, extra_copts, repo_mapping, version)

Repository rule for GNU Bison.

The resulting repository will have a //bin:bison executable target.

Example

load("@rules_bison//bison:bison.bzl", "bison_repository")

bison_repository(
    name = "bison_v3.3.2",
    version = "3.3.2",
)

ATTRIBUTES

Name Description Type Mandatory Default
name A unique name for this repository. Name required
extra_copts Additional C compiler options to use when building GNU Bison. List of strings optional []
repo_mapping A dictionary from local repository name to global repository name. This allows controls over workspace dependency resolution for dependencies of this repository.<p>For example, an entry "@foo": "@bar" declares that, for any time this repository depends on @foo (such as a dependency on @foo//some:target, it should actually resolve that dependency within globally-declared @bar (@bar//some:target). Dictionary: String -> String required
version A supported version of GNU Bison. String required

bison_toolchain_repository

bison_toolchain_repository(name, bison_repository, repo_mapping)

Toolchain repository rule for Bison toolchains.

Toolchain repositories add a layer of indirection so that Bazel can resolve toolchains without downloading additional dependencies.

The resulting repository will have the following targets:

  • //bin:bison (an alias into the underlying [bison_repository] (#bison_repository))
  • //:toolchain, which can be registered with Bazel.

Example

load(
    "@rules_bison//bison:bison.bzl",
    "bison_repository",
    "bison_toolchain_repository",
)

bison_repository(
    name = "bison_v3.3.2",
    version = "3.3.2",
)

bison_toolchain_repository(
    name = "bison",
    bison_repository = "@bison_v3.3.2",
)

register_toolchains("@bison//:toolchain")

ATTRIBUTES

Name Description Type Mandatory Default
name A unique name for this repository. Name required
bison_repository The name of a bison_repository. String required
repo_mapping A dictionary from local repository name to global repository name. This allows controls over workspace dependency resolution for dependencies of this repository.<p>For example, an entry "@foo": "@bar" declares that, for any time this repository depends on @foo (such as a dependency on @foo//some:target, it should actually resolve that dependency within globally-declared @bar (@bar//some:target). Dictionary: String -> String required

BisonToolchainInfo

BisonToolchainInfo(all_files, bison_tool, bison_env)

Provider for a Bison toolchain.

FIELDS

Name Description
all_files A depset containing all files comprising this Bison toolchain.
bison_tool A FilesToRunProvider for the bison binary.
bison_env Additional environment variables to set when running bison_tool.

bison_register_toolchains

bison_register_toolchains(version, extra_copts)

A helper function for Bison toolchains registration.

This workspace macro will create a bison_repository named bison_v{version} and register it as a Bazel toolchain.

PARAMETERS

Name Description Default Value
version A supported version of Bison. "3.3.2"
extra_copts Additional C compiler options to use when building Bison. []

bison_toolchain

bison_toolchain(ctx)

Returns the current BisonToolchainInfo.

PARAMETERS

Name Description Default Value
ctx A rule context, where the rule has a toolchain dependency on BISON_TOOLCHAIN_TYPE. none

RETURNS

A BisonToolchainInfo.