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https://github.com/google/flatbuffers.git
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33a15d63cf
We need to copy the .fbs files into the package used for .bfbs files. This is necessary as flatc doesn't provide support to specify the full output file name for an .fbs file in a different folder. I tried OUTPUT_FILE env var but this doesn't seem to be honored by flatc.
91 lines
3.3 KiB
Python
91 lines
3.3 KiB
Python
"""
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Rules for building typescript flatbuffers with Bazel.
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"""
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load("@aspect_rules_js//js:defs.bzl", "js_library")
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load(":build_defs.bzl", "flatbuffer_library_public")
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DEFAULT_FLATC_TS_ARGS = [
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"--gen-object-api",
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"--gen-mutable",
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"--reflect-names",
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"--gen-name-strings",
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"--ts-flat-files",
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"--keep-prefix",
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]
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def flatbuffer_ts_library(
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name,
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srcs,
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compatible_with = None,
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target_compatible_with = None,
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deps = [],
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include_paths = None,
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flatc_args = DEFAULT_FLATC_TS_ARGS,
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visibility = None,
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restricted_to = None,
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gen_reflections = False):
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"""Generates a ts_library rule for a given flatbuffer definition.
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Args:
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name: Name of the generated ts_library rule.
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srcs: Source .fbs file(s).
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deps: Other flatbuffer_ts_library's to depend on. Note that currently
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you must specify all your transitive dependencies manually.
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include_paths: Optional, list of paths the includes files can be found in.
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flatc_args: Optional list of additional arguments to pass to flatc
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(e.g. --gen-mutable).
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visibility: The visibility of the generated cc_library. By default, use the
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default visibility of the project.
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compatible_with: Optional, The list of environments this rule can be built
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for, in addition to default-supported environments.
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restricted_to: Optional, The list of environments this rule can be built
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for, instead of default-supported environments.
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target_compatible_with: Optional, The list of target platform constraints
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to use.
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gen_reflections: Optional, if true this will generate the flatbuffer
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reflection binaries for the schemas.
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"""
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srcs_lib = "%s_srcs" % (name)
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out_base = [native.package_relative_label(s).name.removesuffix(".fbs") for s in srcs]
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if len(srcs) != 1:
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fail("flatbuffer_ts_library only supports one .fbs file per target currently.")
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outs = ["%s_generated.cjs" % s for s in out_base]
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includes = [d + "_includes" for d in deps]
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reflection_name = "%s_reflection" % name if gen_reflections else ""
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flatbuffer_library_public(
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name = srcs_lib,
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srcs = srcs,
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outs = outs,
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language_flag = "--ts",
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includes = includes,
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include_paths = include_paths,
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extra_env = "ESBUILD_BIN=$(ESBUILD_BIN)",
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flatc_args = flatc_args + ["--filename-suffix _generated"],
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compatible_with = compatible_with,
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restricted_to = restricted_to,
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reflection_name = reflection_name,
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reflection_visibility = visibility,
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target_compatible_with = target_compatible_with,
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flatc_path = Label("//ts:compile_flat_file"),
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toolchains = ["@aspect_rules_esbuild//esbuild:resolved_toolchain"],
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tools = ["@aspect_rules_esbuild//esbuild:resolved_toolchain"],
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)
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js_library(
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name = name,
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visibility = visibility,
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compatible_with = compatible_with,
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restricted_to = restricted_to,
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target_compatible_with = target_compatible_with,
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srcs = outs,
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)
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native.filegroup(
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name = "%s_includes" % (name),
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srcs = srcs + includes,
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compatible_with = compatible_with,
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restricted_to = restricted_to,
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visibility = visibility,
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)
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