libcamera/libcamera.git - libcamera official repository

path: root/src/qcam/assets/feathericons/server.svg

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author	Laurent Pinchart <laurent.pinchart@ideasonboard.com>	2020-05-02 03:32:00 +0300
committer	Laurent Pinchart <laurent.pinchart@ideasonboard.com>	2020-05-13 17:00:04 +0300
commit	4939e114b686324f77e02c70aca0402bb13303ea (patch)
tree	668ff26edbacd5ac05b631407bf6c85cd13443a2 /src/qcam/assets/feathericons/server.svg
parent	57e999a4aef95a60202ce8e517018d6d1a09b35d (diff)

utils: raspberrypi: ctt: Fix pycodestyle W504

W504 line break after binary operator Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com>

Diffstat (limited to 'src/qcam/assets/feathericons/server.svg')

0 files changed, 0 insertions, 0 deletions

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# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/python.gni")
import("//third_party/closure_compiler/closure_args.gni")
import("//third_party/closure_compiler/compile_js.gni")
import("//third_party/protobuf/proto_library.gni")
import("//ui/webui/webui_features.gni")

# TODO(rockot): Maybe we can factor these dependencies out of //mojo. They're
# used to conditionally enable message ID scrambling in a way which is
# consistent across toolchains and which is affected by branded vs non-branded
# Chrome builds. Ideally we could create some generic knobs here that could be
# flipped elsewhere though.
import("//build/config/chrome_build.gni")
import("//build/config/chromecast_build.gni")
import("//build/config/chromeos/ui_mode.gni")
import("//build/config/nacl/config.gni")
import("//build/toolchain/kythe.gni")
import("//components/nacl/features.gni")
import("//third_party/jinja2/jinja2.gni")
import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
declare_args() {
  # Indicates whether typemapping should be supported in this build
  # configuration. This may be disabled when building external projects which
  # depend on //mojo but which do not need/want all of the Chromium tree
  # dependencies that come with typemapping.
  #
  # Note that (perhaps obviously) a huge amount of Chromium code will not build
  # with typemapping disabled, so it is never valid to set this to |false| in
  # any Chromium build configuration.
  enable_mojom_typemapping = true

  # Controls message ID scrambling behavior. If |true|, message IDs are
  # scrambled (i.e. randomized based on the contents of //chrome/VERSION) on
  # non-Chrome OS desktop platforms. Set to |false| to disable message ID
  # scrambling on all platforms.
  enable_mojom_message_id_scrambling = true

  # Enables Closure compilation of generated JS lite bindings. In environments
  # where compilation is supported, any mojom target "foo" will also have a
  # corresponding "foo_js_library_for_compile" target generated.
  enable_mojom_closure_compile = enable_js_type_check && optimize_webui

  # Enables generating Typescript bindings and compiling them to JS bindings.
  enable_typescript_bindings = false

  # Enables generating javascript fuzzing-related code and the bindings for the
  # MojoLPM fuzzer targets. Off by default.
  enable_mojom_fuzzer = false
}

# NOTE: We would like to avoid scrambling message IDs where it doesn't add
# value, so we limit the behavior to desktop builds for now. There is some
# redundancy in the conditions here, but it is tolerated for clarity:
# We're explicit about Mac, Windows, and Linux desktop support, but it's
# also necessary to ensure that bindings in alternate toolchains (e.g.
# NaCl IRT) are always consistent with the default toolchain; for that
# reason we always enable scrambling within NaCl toolchains when possible,
# as well as within the default toolchain when NaCl is enabled.
#
# Finally, because we *cannot* enable scrambling on Chrome OS (it would break
# ARC) we have to explicitly opt out there even when NaCl is enabled (and
# consequently also when building for NaCl toolchains.) For this reason we
# check |target_os| explicitly, as it's consistent across all toolchains.
#
# TODO(crbug.com/1052397): Remove !chromeos_is_browser_only once
# lacros-chrome switches to target_os="chromeos"
enable_scrambled_message_ids =
    enable_mojom_message_id_scrambling &&
    (is_mac || is_win ||
     (is_linux && !is_chromeos_ash && !is_chromecast && !is_chromeos_lacros) ||
     ((enable_nacl || is_nacl || is_nacl_nonsfi) &&
      (target_os != "chromeos" && !chromeos_is_browser_only)))

_mojom_tools_root = "//mojo/public/tools"
_mojom_library_root = "$_mojom_tools_root/mojom/mojom"
mojom_parser_script = "$_mojom_tools_root/mojom/mojom_parser.py"
mojom_parser_sources = [
  "$_mojom_library_root/__init__.py",
  "$_mojom_library_root/error.py",
  "$_mojom_library_root/generate/__init__.py",
  "$_mojom_library_root/generate/generator.py",
  "$_mojom_library_root/generate/module.py",
  "$_mojom_library_root/generate/pack.py",
  "$_mojom_library_root/generate/template_expander.py",
  "$_mojom_library_root/generate/translate.py",
  "$_mojom_library_root/parse/__init__.py",
  "$_mojom_library_root/parse/ast.py",
  "$_mojom_library_root/parse/lexer.py",
  "$_mojom_library_root/parse/parser.py",
]

mojom_generator_root = "$_mojom_tools_root/bindings"
mojom_generator_script = "$mojom_generator_root/mojom_bindings_generator.py"
mojom_generator_sources =
    mojom_parser_sources + [
      "$mojom_generator_root/generators/cpp_util.py",
      "$mojom_generator_root/generators/mojom_cpp_generator.py",
      "$mojom_generator_root/generators/mojom_java_generator.py",
      "$mojom_generator_root/generators/mojom_mojolpm_generator.py",
      "$mojom_generator_root/generators/mojom_js_generator.py",
      "$mojom_generator_root/generators/mojom_ts_generator.py",
      "$mojom_generator_script",
    ]

if (enable_scrambled_message_ids) {
  declare_args() {
    # The path to a file whose contents can be used as the basis for a message
    # ID scrambling salt.
    mojom_message_id_salt_path = "//chrome/VERSION"
  }

  assert(mojom_message_id_salt_path != "")
  message_scrambling_args = [
    "--scrambled_message_id_salt_path",
    rebase_path(mojom_message_id_salt_path, root_build_dir),
  ]
  message_scrambling_inputs = [ mojom_message_id_salt_path ]
} else {
  message_scrambling_args = []
  message_scrambling_inputs = []
}

# Generates targets for building C++, JavaScript and Java bindings from mojom
# files. The output files will go under the generated file directory tree with
# the same path as each input file.
#
# Other targets should depend on one of these generated targets (where "foo"
# is the target name):
#
#   foo
#       C++ bindings.
#
#   foo_blink
#       C++ bindings using Blink standard types.
#
#   foo_java
#       Java bindings.
#
#   foo_js
#       JavaScript bindings; used as compile-time dependency.
#
#   foo_js_data_deps
#       JavaScript bindings; used as run-time dependency.
#
# Parameters:
#
#   sources (optional if one of the deps sets listed below is present)
#       List of source .mojom files to compile.
#
#   deps (optional)
#       Note: this can contain only other mojom targets.
#
#       DEPRECATED: This is synonymous with public_deps because all mojom
#       dependencies must be public by design. Please use public_deps.
#
#   public_deps (optional)
#       Note: this can contain only other mojom targets.
#
#   parser_deps (optional)
#       List of non-mojom targets required for the mojom sources to be parsed.
#
#   import_dirs (optional)
#       List of import directories that will get added when processing sources.
#
#   input_root_override (optional)
#       Root path for the .mojom files used to generate the namespaces for
#       interfaces. Useful with targets outside //, e.g. in parent directories
#       above "//". The default input root is //
#       Example: Vivaldi's source root is "//vivaldi/",
#       and "//vivaldi/chromium/" is "//"
#       In such cases, not using this argument lead to the output files being
#       located in different directories than expected.
#
#   testonly (optional)
#
#   visibility (optional)
#
#   visibility_blink (optional)
#       The value to use for visibility for the blink variant. If unset,
#       |visibility| is used.
#
#   cpp_only (optional)
#       If set to true, only the C++ bindings targets will be generated.
#
#       NOTE: If the global |enable_mojom_fuzzer| build arg is true, JS bindings
#       will still be generated even when |cpp_only| is set to |true|, unless
#       you also set |enable_fuzzing| to |false| in your mojom target.
#
#   cpp_typemaps (optional)
#       A list of typemaps to be applied to the generated C++ bindings for this
#       mojom target. Note that this only applies to the non-Blink variant of
#       generated C++ bindings.
#
#       Every typemap is a GN scope describing how one or more mojom types maps
#       to a non-mojom C++ type, including necessary deps and headers required
#       for the mapping to work. See the Typemaps section below.
#
#   blink_cpp_typemaps (optional)
#       Same as above, but for the Blink variant of generated C++ bindings.
#
#   cpp_proxy_target (optional)
#       The name of a target which all C++ dependencies will link against
#       instead of linking directly against this mojom target's generated C++
#       sources. Normally when declaring invoking the mojom("foo") target, GN
#       emits a source_set or component target named "foo" which encompasses the
#       default variant of generated C++ bindings. This changes that to instead
#       emit a group("foo") which merely forwards public_deps to the named
#       `cpp_proxy_target`. That target must in turn depend on
#       "foo_cpp_sources".
#
#       This is useful primarily in conjunction with export_define et al to
#       embed generated C++ bindings within an existing component target.
#
#   blink_cpp_proxy_target (optional)
#       Same concept as `cpp_proxy_target` above, but affects the generated
#       "foo_blink" Blink-variant C++ bindings.
#
#   cpp_configs (optional)
#       A list of extra configs to apply to the default variant of generated C++
#       bindings.
#
#   blink_cpp_configs (optional)
#       A list of extra configs to apply to the Blink variant of generated C++
#       bindings.
#
#   mojom_source_deps (optional)
#       A list of mojoms this target depends upon. This is equivalent to
#       public_deps except that the C++ bindings depend on each of the named
#       "foo" targets' "foo_cpp_sources" rather than on foo's
#       `cpp_proxy_target`. It only makes sense to use this for dependencies
#       that set `cpp_proxy_target`, and only when the dependent mojom() would
#       otherwise have circular dependencies with that proxy target.
#
#   mojom_blink_source_deps (optional)
#       Same as above but depends on "foo_blink_cpp_sources" and is used for
#       dependencies that specify a `blink_cpp_proxy_target`.
#
#   generate_java (optional)
#       If set to true, Java bindings are generated for Android builds. If
#       |cpp_only| is set to true, it overrides this to prevent generation of
#       Java bindings.
#
#   enable_fuzzing (optional)
#       Enables generation of fuzzing sources for the target if the global build
#       arg |enable_mojom_fuzzer| is also set to |true|. Defaults to |true|. If
#       fuzzing generation is enabled for a target, the target will always
#       generate JS bindings even if |cpp_only| is set to |true|. See note
#       above.
#
#   support_lazy_serialization (optional)
#       If set to |true|, generated C++ bindings will effectively prefer to
#       transmit messages in an unserialized form when going between endpoints
#       in the same process. This avoids the runtime cost of serialization,
#       deserialization, and validation logic at the expensive of increased
#       code size. Defaults to |false|.
#
#   disable_variants (optional)
#       If |true|, no variant sources will be generated for the target. Defaults
#       to |false|.
#
#   disallow_native_types (optional)
#       If set to |true|, mojoms in this target may not apply the [Native]
#       attribute to struct or enum declarations. This avoids emitting code
#       which depends on legacy IPC serialization. Default is |false|, meaning
#       [Native] types are allowed.
#
#   disallow_interfaces (optional)
#       If set to |true|, mojoms in this target may not define interfaces.
#       Generates bindings with a smaller set of dependencies. Defaults to
#       |false|.
#
#   scramble_message_ids (optional)
#       If set to |true| (the default), generated mojom interfaces will use
#       scrambled ordinal identifiers in encoded messages.
#
#   component_output_prefix (optional)
#       The prefix to use for the output_name of any component library emitted
#       for generated C++ bindings. If this is omitted, C++ bindings targets are
#       emitted as source_sets instead. Because this controls the name of the
#       output shared library binary in the root output directory, it must be
#       unique across the entire build configuration.
#
#       This is required if |component_macro_prefix| is specified.
#
#   component_macro_prefix (optional)
#       This specifies a macro prefix to use for component export macros and
#       should therefore be globally unique in the project. For example if this
#       is "FOO_BAR", then the generated C++ sources will be built with
#       IS_FOO_BAR_{suffix}_IMPL defined, and the generated public headers will
#       annotate public symbol definitions with
#       COMPONENT_EXPORT(FOO_BAR_{suffix}). "suffix" in this case depends on
#       which internal subtarget is generating the code (e.g. "SHARED", or a
#       variant name like "BLINK").
#
#   enabled_features (optional)
#       Definitions in a mojom file can be guarded by an EnableIf attribute. If
#       the value specified by the attribute does not match any items in the
#       list of enabled_features, the definition will be disabled, with no code
#       emitted for it.
#
#   generate_closure_exports (optional)
#       Generates JS lite bindings will use goog.provide and goog.require
#       annotations to export its symbols and import core Mojo bindings support
#       and other mojom dependency modules. Use this if you plan to compile your
#       bindings into a larger JS binary. Defaults to |false|, instead
#       generating JS lite bindings which assume they will be manually loaded in
#       correct dependency order. Note that this only has an effect if
#       the |enable_mojom_closure_compile| global arg is set to |true| as well.
#
#   use_typescript_sources (optional)
#       Uses the Typescript generator to generate JavaScript bindings.
#
#   js_generate_struct_deserializers (optional)
#       Generates JS deerialize methods for structs.
#
#   extra_cpp_template_paths (optional)
#       List of extra C++ templates that are used to generate additional source
#       and/or header files. The templates should end with extension ".tmpl".
#
#   webui_module_path (optional)
#       The path or URL at which modules generated by this target will be
#       accessible to WebUI pages. This may either be an absolute path or
#       a full URL path starting with "chrome://resources/mojo".
#
#       If an absolute path, a WebUI page may only import these modules if
#       they are manually packaged and mapped independently by that page's
#       WebUIDataSource. The mapped path must match the path given here.
#
#       If this is is instead a URL string starting with
#       "chrome://resources/mojo", the generated resources must be added to
#       content_resources.grd and registered with
#       content::SharedResourcesDataSource with a corresponding path, at which
#       point they will be made available to all WebUI pages at the given URL.
#
# The following parameters are used to support the component build. They are
# needed so that bindings which are linked with a component can use the same
# export settings for classes. The first three are for the chromium variant, and
# the last three are for the blink variant. These parameters can also override
# |component_macro_prefix| for a specific variant, allowing e.g. one variant
# to be linked into a larger non-mojom component target, while all other
# variants get their own unique component target.
#   export_class_attribute (optional)
#       The attribute to add to the class declaration. e.g. "CONTENT_EXPORT"
#   export_define (optional)
#       A define to be added to the source_set which is needed by the export
#       header. e.g. "CONTENT_IMPLEMENTATION=1"
#   export_header (optional)
#       A header to be added to the generated bindings to support the component
#       build. e.g. "content/common/content_export.h"
#   export_class_attribute_blink (optional)
#   export_define_blink (optional)
#   export_header_blink (optional)
#       These three parameters are the blink variants of the previous 3.
#
# The following parameters are used to correct component build dependencies.
# They are needed so mojom-mojom dependencies follow the rule that dependencies
# on a source set in another component are replaced by a dependency on the
# containing component. The first two are for the chromium variant; the other
# two are for the blink variant.
#   overridden_deps (optional)
#       The list of mojom deps to be overridden.
#   component_deps (optional)
#       The list of component deps to add to replace overridden_deps.
#   overridden_deps_blink (optional)
#   component_deps_blink (optional)
#       These two parameters are the blink variants of the previous two.
#
#   check_includes_blink (optional)
#       Overrides the check_includes variable for the blink variant.
#       If check_includes_blink is not defined, the check_includes variable
#       retains its original value.
#
# Typemaps
# ========
# The cpp_typemaps and blink_cpp_typemaps each specify an optional list of
# typemapping configurations. Each configuration is a GN scope with metadata
# describing what and how to map.
#
# Typemap scope parameters:
#   types
#       A list of type specifications for this typemap. Each type specification
#       is a nested GN scope which can be expressed with the following syntax:
#
#           {
#             mojom = "foo.mojom.Bar"
#             cpp = "::foo::LegitBar"
#             move_only = true
#             # etc...
#           }
#
#       Each type specification supports the following values:
#
#         mojom (required)
#             The fully qualified name of a mojom type to be mapped. This is a
#             string like "foo.mojom.Bar".
#
#         cpp (required)
#             The fully qualified name of the C++ type to which the mojom type
#             should be mapped in generated bindings. This is a string like
#             "::base::Value" or "std::vector<::base::Value>".
#
#         move_only (optional)
#             A boolean value (default false) which indicates whether the C++
#             type is move-only. If true, generated bindings will pass the type
#             by value and use std::move() at call sites.
#
#         copyable_pass_by_value (optional)
#             A boolean value (default false) which effectively indicates
#             whether the C++ type is very cheap to copy. If so, generated
#             bindings will pass by value but not use std::move() at call sites.
#
#         nullable_is_same_type (optional)
#             A boolean value (default false) which indicates that the C++ type
#             has some baked-in semantic notion of a "null" state. If true, the
#             traits for the type must define IsNull and SetToNull methods.
#
#             When false, nullable fields are represented by wrapping the C++
#             type with absl::optional, and null values are simply
#             absl::nullopt.
#
#         hashable (optional)
#             A boolean value (default false) indicating whether the C++ type is
#             hashable. Set to true if true AND needed (i.e. you need to use the
#             type as the key of a mojom map).
#
#         force_serialize (optional)
#             A boolean value (default false) which disables lazy serialization
#             of the typemapped type if lazy serialization is enabled for the
#             mojom target applying this typemap.
#
# Additional typemap scope parameters:
#
#   traits_headers (optional)
#       Headers which must be included in the generated mojom in order for
#       serialization to be possible. This generally means including at least
#       the header for the corresponding mojom traits definitions.
#
#   traits_private_headers (optional)
#       Headers which must be included in generated C++ serialization code for
#       a mojom using the typemap. This should be used only when including a
#       header in |traits_headers| is problematic for compilation, as is
#       sometimes the case with legacy IPC message headers.
#
#   traits_sources (optional)
#       The references to the source files (typically a single .cc and .h file)
#       defining an appropriate set of EnumTraits or StructTraits, etc for the
#       the type-mapping. Using this will cause the listed sources to be
#       integrated directly into the dependent mojom's generated type-mapping
#       targets.
#
#       Prefer using |traits_public_deps| over inlined |traits_sources|, as this
#       will generally lead to easier build maintenance over time.
#
#       NOTE: If a typemap is shared by Blink and non-Blink bindings, you cannot
#       use this and MUST use |traits_public_deps| to reference traits built
#       within a separate target.
#
#   traits_deps / traits_public_deps (optional)
#       Any dependencies of sources in |traits_headers| or |traits_sources| must
#       be listed here.
#
template("mojom") {
  assert(
      defined(invoker.sources) || defined(invoker.deps) ||
          defined(invoker.public_deps),
      "\"sources\" or \"deps\" must be defined for the $target_name template.")

  if (defined(invoker.export_class_attribute) ||
      defined(invoker.export_define) || defined(invoker.export_header)) {
    assert(defined(invoker.export_class_attribute))
    assert(defined(invoker.export_define) || defined(invoker.cpp_configs))
    assert(defined(invoker.export_header))
  }
  if (defined(invoker.export_class_attribute_blink) ||
      defined(invoker.export_define_blink) ||
      defined(invoker.export_header_blink)) {
    assert(defined(invoker.export_class_attribute_blink))
    assert(defined(invoker.export_define_blink) ||
           defined(invoker.blink_cpp_configs))
    assert(defined(invoker.export_header_blink))

    # Not all platforms use the Blink variant, so make sure GN doesn't complain
    # about these values being inconsequential.
    not_needed(invoker,
               [
                 "export_class_attribute_blink",
                 "export_define_blink",
                 "export_header_blink",
               ])
  }
  if (defined(invoker.overridden_deps) || defined(invoker.component_deps)) {
    assert(defined(invoker.overridden_deps))
    assert(defined(invoker.component_deps))
  }

  if (defined(invoker.overridden_deps_blink) ||
      defined(invoker.component_deps_blink)) {
    assert(defined(invoker.overridden_deps_blink))
    assert(defined(invoker.component_deps_blink))
  }

  # Type-mapping may be disabled or we may not generate C++ bindings.
  not_needed(invoker,
             [
               "cpp_typemaps",
               "blink_cpp_typemaps",
             ])

  require_full_cpp_deps =
      !defined(invoker.disallow_native_types) ||
      !invoker.disallow_native_types || !defined(invoker.disallow_interfaces) ||
      !invoker.disallow_interfaces

  all_deps = []
  mojom_cpp_deps = []
  if (defined(invoker.deps)) {
    all_deps += invoker.deps
    mojom_cpp_deps += invoker.deps
  }
  if (defined(invoker.public_deps)) {
    all_deps += invoker.public_deps
    mojom_cpp_deps += invoker.public_deps
  }
  if (defined(invoker.mojom_source_deps)) {
    all_deps += invoker.mojom_source_deps
  }
  if (defined(invoker.mojom_blink_source_deps)) {
    all_deps += invoker.mojom_blink_source_deps
  }
  not_needed([ "mojom_deps" ])

  if (defined(invoker.component_macro_prefix)) {
    assert(defined(invoker.component_output_prefix))
  }

  group("${target_name}__is_mojom") {
  }

  # Explicitly ensure that all dependencies (invoker.deps and
  # invoker.public_deps) are mojom targets.
  group("${target_name}__check_deps_are_all_mojom") {
    deps = []
    foreach(d, all_deps) {
      name = get_label_info(d, "label_no_toolchain")
      toolchain = get_label_info(d, "toolchain")
      deps += [ "${name}__is_mojom(${toolchain})" ]
    }
  }

  sources_list = []
  if (defined(invoker.sources)) {
    sources_list = invoker.sources
  }

  # Listed sources may be relative to the current target dir, or they may be
  # absolute paths, including paths to generated mojom files. While those are
  # fine as-is for input references, deriving output paths can be more subtle.
  #
  # Here we rewrite all source paths to be relative to the root build dir and
  # strip any root_gen_dir prefixes.
  #
  # So for a target in //foo/bar with:
  #
  #     sources = [
  #       "a.mojom",
  #       "b/c.mojom",
  #       "//baz/d.mojom",
  #       "$target_gen_dir/e.mojom",
  #     ]
  #
  # output_file_base_paths will be:
  #
  #     [
  #       "foo/bar/a.mojom",
  #       "foo/bar/b/c.mojom",
  #       "baz/d.mojom",
  #       "foo/bar/e.mojom",
  #     ]
  #
  # This result is essentially a list of base filename paths which are suitable
  # for the naming of any generated output files derived from their
  # corresponding input mojoms. These paths are always considered to be relative
  # to root_gen_dir.
  if (defined(invoker.input_root_override)) {
    source_abspaths = rebase_path(sources_list, invoker.input_root_override)
  } else {
    source_abspaths = rebase_path(sources_list, "//")
  }
  output_file_base_paths = []
  foreach(path, source_abspaths) {
    output_file_base_paths +=
        [ string_replace(path, rebase_path(root_gen_dir, "//") + "/", "") ]
  }

  # Sanity check that either all input files have a .mojom extension, or
  # all input files have a .test-mojom extension AND |testonly| is |true|.
  sources_list_filenames =
      process_file_template(sources_list, "{{source_file_part}}")
  sources_list_filenames_with_mojom_extension =
      process_file_template(sources_list, "{{source_name_part}}.mojom")
  if (sources_list_filenames != sources_list_filenames_with_mojom_extension) {
    sources_list_filenames_with_test_mojom_extension =
        process_file_template(sources_list, "{{source_name_part}}.test-mojom")
    if (sources_list_filenames ==
        sources_list_filenames_with_test_mojom_extension) {
      assert(
          defined(invoker.testonly) && invoker.testonly,
          "mojom targets for .test-mojom files must set |testonly| to |true|")
    } else {
      assert(
          false,
          "One or more mojom files has an invalid extension. The only " +
              "allowed extensions are .mojom and .test-mojom, and any given " +
              "mojom target must use one or the other exclusively.")
    }
  }

  build_metadata_filename = "$target_gen_dir/$target_name.build_metadata"
  build_metadata = {
  }
  build_metadata.sources = rebase_path(sources_list)
  build_metadata.deps = []
  foreach(dep, all_deps) {
    dep_target_gen_dir = get_label_info(dep, "target_gen_dir")
    dep_name = get_label_info(dep, "name")
    build_metadata.deps +=
        [ rebase_path("$dep_target_gen_dir/$dep_name.build_metadata") ]
  }
  write_file(build_metadata_filename, build_metadata, "json")

  generate_fuzzing =
      (!defined(invoker.enable_fuzzing) || invoker.enable_fuzzing) &&
      enable_mojom_fuzzer && (!defined(invoker.testonly) || !invoker.testonly)

  parser_target_name = "${target_name}__parser"
  parser_deps = []
  foreach(dep, all_deps) {
    _label = get_label_info(dep, "label_no_toolchain")
    parser_deps += [ "${_label}__parser" ]
  }
  if (defined(invoker.parser_deps)) {
    parser_deps += invoker.parser_deps
  }
  if (sources_list == []) {
    # Even without sources we generate a parser target to at least forward
    # other parser dependencies.
    group(parser_target_name) {
      public_deps = parser_deps
    }
  } else {
    enabled_features = []
    if (defined(invoker.enabled_features)) {
      enabled_features += invoker.enabled_features
    }
    if (is_posix) {
      enabled_features += [ "is_posix" ]
    }
    if (is_android) {
      enabled_features += [ "is_android" ]
    } else if (is_chromeos_ash) {
      enabled_features += [
        "is_chromeos",
        "is_chromeos_ash",
      ]
    } else if (is_fuchsia) {
      enabled_features += [ "is_fuchsia" ]
    } else if (is_ios) {
      enabled_features += [ "is_ios" ]
    } else if (is_linux || is_chromeos_lacros) {
      enabled_features += [ "is_linux" ]
      if (is_chromeos_lacros) {
        enabled_features += [
          "is_chromeos",
          "is_chromeos_lacros",
        ]
      }
    } else if (is_mac) {
      enabled_features += [ "is_mac" ]
    } else if (is_win) {
      enabled_features += [ "is_win" ]
    }

    # TODO(crbug.com/1194274): Investigate nondeterminism in Py3 builds.
    python2_action(parser_target_name) {
      script = mojom_parser_script
      inputs = mojom_parser_sources + [ build_metadata_filename ]
      sources = sources_list
      deps = parser_deps
      outputs = []
      foreach(base_path, output_file_base_paths) {
        filename = get_path_info(base_path, "file")
        dirname = get_path_info(base_path, "dir")
        outputs += [ "$root_gen_dir/$dirname/${filename}-module" ]
      }

      filelist = []
      foreach(source, sources_list) {
        filelist += [ rebase_path(source) ]
      }
      response_file_contents = filelist

      args = [
        # Resolve relative input mojom paths against both the root src dir and
        # the root gen dir.
        "--input-root",
        rebase_path("//."),
        "--input-root",
        rebase_path(root_gen_dir),

        "--output-root",
        rebase_path(root_gen_dir),

        "--mojom-file-list={{response_file_name}}",

        "--check-imports",
        rebase_path(build_metadata_filename),
      ]

      if (defined(invoker.input_root_override)) {
        args += [
          "--input-root",
          rebase_path(invoker.input_root_override),
        ]
      }

      foreach(enabled_feature, enabled_features) {
        args += [
          "--enable-feature",
          enabled_feature,
        ]
      }

      if (defined(invoker.webui_module_path)) {
        args += [
          "--add-module-metadata",
          "webui_module_path=${invoker.webui_module_path}",
        ]
      }
    }
  }

  generator_cpp_message_ids_target_name = "${target_name}__generate_message_ids"

  # Generate code that is shared by different variants.
  if (sources_list != []) {
    base_dir = "//"
    if (defined(invoker.input_root_override)) {
      base_dir = invoker.input_root_override
    }

    common_generator_args = [
      "--use_bundled_pylibs",
      "-o",
      rebase_path(root_gen_dir, root_build_dir),
      "generate",
      "-d",
      rebase_path(base_dir, root_build_dir),
      "-I",
      rebase_path("//", root_build_dir),
      "--bytecode_path",
      rebase_path("$root_gen_dir/mojo/public/tools/bindings", root_build_dir),
    ]
    if (defined(invoker.input_root_override)) {
      common_generator_args += [
        "-I",
        rebase_path(invoker.input_root_override, root_build_dir),
      ]
    }

    if (defined(invoker.disallow_native_types) &&
        invoker.disallow_native_types) {
      common_generator_args += [ "--disallow_native_types" ]
    }

    if (defined(invoker.disallow_interfaces) && invoker.disallow_interfaces) {
      common_generator_args += [ "--disallow_interfaces" ]
    }

    if (defined(invoker.import_dirs)) {
      foreach(import_dir, invoker.import_dirs) {
        common_generator_args += [
          "-I",
          rebase_path(import_dir, root_build_dir),
        ]
      }
    }

    if (defined(invoker.component_macro_prefix)) {
      shared_component_export_macro =
          "COMPONENT_EXPORT(${invoker.component_macro_prefix}_SHARED)"
      shared_component_impl_macro =
          "IS_${invoker.component_macro_prefix}_SHARED_IMPL"
      shared_component_output_name = "${invoker.component_output_prefix}_shared"
    } else if (defined(invoker.export_class_attribute_shared) ||
               defined(invoker.export_class_attribute)) {
      if (defined(invoker.export_class_attribute_shared)) {
        assert(defined(invoker.export_header_shared))
        shared_component_export_macro = invoker.export_class_attribute_shared
        shared_component_impl_macro = invoker.export_define_shared
      } else {
        assert(!defined(invoker.export_header_shared))

        # If no explicit shared attribute/define was provided by the invoker,
        # we derive some reasonable settings frorm the default variant.
        shared_component_export_macro = "COMPONENT_EXPORT(MOJOM_SHARED_" +
                                        invoker.export_class_attribute + ")"
        shared_component_impl_macro =
            "IS_MOJOM_SHARED_" + invoker.export_class_attribute + "_IMPL"
      }

      if (defined(invoker.component_output_prefix)) {
        shared_component_output_name =
            "${invoker.component_output_prefix}_shared"
      } else {
        shared_component_output_name = "${target_name}_shared"
      }
    }

    # TODO(crbug.com/1194274): Investigate nondeterminism in Py3 builds.
    python2_action(generator_cpp_message_ids_target_name) {
      script = mojom_generator_script
      inputs = mojom_generator_sources + jinja2_sources
      sources = sources_list
      deps = [
        ":$parser_target_name",
        "//mojo/public/tools/bindings:precompile_templates",
      ]
      if (defined(invoker.parser_deps)) {
        deps += invoker.parser_deps
      }
      outputs = []
      args = common_generator_args
      filelist = []
      foreach(source, sources_list) {
        filelist += [ rebase_path("$source", root_build_dir) ]
      }
      foreach(base_path, output_file_base_paths) {
        outputs += [ "$root_gen_dir/$base_path-shared-message-ids.h" ]
      }

      response_file_contents = filelist

      args += [
        "--filelist={{response_file_name}}",
        "--generate_non_variant_code",
        "--generate_message_ids",
        "-g",
        "c++",
      ]

      if (!defined(invoker.scramble_message_ids) ||
          invoker.scramble_message_ids) {
        inputs += message_scrambling_inputs
        args += message_scrambling_args
      }
    }

    generator_shared_target_name = "${target_name}_shared__generator"

    # TODO(crbug.com/1194274): Investigate nondeterminism in Py3 builds.
    python2_action(generator_shared_target_name) {
      visibility = [ ":*" ]
      script = mojom_generator_script
      inputs = mojom_generator_sources + jinja2_sources
      sources = sources_list
      deps = [
        ":$parser_target_name",
        "//mojo/public/tools/bindings:precompile_templates",
      ]
      if (defined(invoker.parser_deps)) {
        deps += invoker.parser_deps
      }

      outputs = []
      args = common_generator_args
      filelist = []
      foreach(source, sources_list) {
        filelist += [ rebase_path("$source", root_build_dir) ]
      }
      foreach(base_path, output_file_base_paths) {
        outputs += [
          "$root_gen_dir/$base_path-params-data.h",
          "$root_gen_dir/$base_path-shared-internal.h",
          "$root_gen_dir/$base_path-shared.cc",
          "$root_gen_dir/$base_path-shared.h",
        ]
      }

      response_file_contents = filelist

      args += [
        "--filelist={{response_file_name}}",
        "--generate_non_variant_code",
        "-g",
        "c++",
      ]

      if (defined(shared_component_export_macro)) {
        args += [
          "--export_attribute",
          shared_component_export_macro,
          "--export_header",
          "base/component_export.h",
        ]
      }

      # Enable adding annotations to generated C++ headers that are used for
      # cross-references in CodeSearch.
      if (enable_kythe_annotations) {
        args += [ "--enable_kythe_annotations" ]
      }
    }
  } else {
    group(generator_cpp_message_ids_target_name) {
    }
  }

  shared_cpp_sources_target_name = "${target_name}_shared_cpp_sources"
  source_set(shared_cpp_sources_target_name) {
    if (defined(invoker.testonly)) {
      testonly = invoker.testonly
    }
    deps = []
    public_deps = []
    if (output_file_base_paths != []) {
      sources = []
      foreach(base_path, output_file_base_paths) {
        sources += [
          "$root_gen_dir/$base_path-params-data.h",
          "$root_gen_dir/$base_path-shared-internal.h",
          "$root_gen_dir/$base_path-shared.cc",
          "$root_gen_dir/$base_path-shared.h",
        ]
      }
      public_deps += [ ":$generator_shared_target_name" ]
    }
    if (require_full_cpp_deps) {
      public_deps += [ "//mojo/public/cpp/bindings" ]
    } else {
      public_deps += [ "//mojo/public/cpp/bindings:bindings_base" ]
    }
    foreach(d, all_deps) {
      # Resolve the name, so that a target //mojo/something becomes
      # //mojo/something:something and we can append shared_cpp_sources_suffix
      # to get the cpp dependency name.
      full_name = get_label_info("$d", "label_no_toolchain")
      public_deps += [ "${full_name}_shared" ]
    }
    if (defined(shared_component_impl_macro)) {
      defines = [ shared_component_impl_macro ]
    }
  }

  shared_cpp_library_target_name = "${target_name}_shared"
  if (defined(shared_component_output_name)) {
    component(shared_cpp_library_target_name) {
      if (defined(invoker.testonly)) {
        testonly = invoker.testonly
      }
      output_name = "$shared_component_output_name"
      public_deps = [ ":$shared_cpp_sources_target_name" ]
    }
  } else {
    group(shared_cpp_library_target_name) {
      if (defined(invoker.testonly)) {
        testonly = invoker.testonly
      }
      public_deps = [ ":$shared_cpp_sources_target_name" ]
    }
  }

  if (generate_fuzzing) {
    # This block generates the proto files used for the MojoLPM fuzzer,
    # and the corresponding proto targets that will be linked in the fuzzer
    # targets. These are independent of the typemappings, and can be done
    # separately here.

    generator_mojolpm_proto_target_name =
        "${target_name}_mojolpm_proto_generator"

    # TODO(crbug.com/1194274): Investigate nondeterminism in Py3 builds.
    python2_action(generator_mojolpm_proto_target_name) {
      script = mojom_generator_script
      inputs = mojom_generator_sources + jinja2_sources
      sources = invoker.sources
      deps = [
        ":$parser_target_name",
        "//mojo/public/tools/bindings:precompile_templates",
      ]

      outputs = []


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