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1# Copyright 2014 The Chromium Authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import("//third_party/WebKit/Source/bindings/core/v8/generated.gni")
6import("//third_party/WebKit/Source/bindings/modules/idl.gni")
7import("//third_party/WebKit/Source/bindings/modules/modules.gni")
8
9bindings_scripts_dir = get_path_info(".", "abspath")
10bindings_scripts_output_dir = "$root_gen_dir/blink/bindings/scripts"
11
12# Replacing <(DEPTH) with "/" makes paths like "<(DEPTH)/foo" absolute.
13_gypi = exec_script(
14    "//build/gypi_to_gn.py",
15    [ rebase_path("scripts.gypi"),
16      "--replace=<(DEPTH)=/" ],
17    "scope",
18    [ "scripts.gypi" ])
19
20jinja_module_files = get_path_info(_gypi.jinja_module_files, "abspath")
21idl_lexer_parser_files = get_path_info(_gypi.idl_lexer_parser_files, "abspath")
22idl_compiler_files = get_path_info(_gypi.idl_compiler_files, "abspath")
23
24# Calls the compute_interfaces_info_individual script.
25#
26# Parameters:
27#   sources_static = list of IDL files to pass as inputs
28#   sources_generated = list of generated IDL files to pass as inputs
29#   component_dir = name if subdirectory (one word, no slashes) of component.
30#   output_file = pickle file to write
31#
32# FIXME: Note the static/generated split is for consistency with GYP. This
33# split is not necessary in the GN build and could be combined into a single
34# "sources".
35template("compute_interfaces_info_individual") {
36  action(target_name) {
37    script = "$bindings_scripts_dir/compute_interfaces_info_individual.py"
38    if (defined(invoker.visibility)) {
39      visibility = invoker.visibility
40    }
41
42    # Save static list to temp file to avoid blowing out command-line length
43    # limit.
44    file_list = "$target_gen_dir/${target_name}_file_list.txt"
45    write_file(file_list, rebase_path(invoker.sources_static, root_build_dir))
46
47    source_prereqs = [
48      "$bindings_scripts_dir/utilities.py",
49      file_list,
50    ] + invoker.sources_static + invoker.sources_generated
51
52    outputs = [
53      invoker.output_file
54    ]
55
56    args = [
57      "--component-dir", invoker.component_dir,
58      "--idl-files-list", rebase_path(file_list, root_build_dir),
59      "--interfaces-info-file",
60      rebase_path(invoker.output_file, root_build_dir),
61      "--write-file-only-if-changed=1",
62      "--",
63    ] + rebase_path(invoker.sources_generated, root_build_dir)
64
65    deps = [
66      # FIXME: should be {modules|core}_generated_idls
67      # http://crbug.com/358074
68      "//third_party/WebKit/Source/bindings:generated_idls",
69    ]
70  }
71}
72
73# Calls generate_event_interfaces
74#
75# Parameters:
76#   sources = A list of IDL files to process.
77#   output_file = The .in file to write, relative to the blink_gen_dir.
78#   suffix = (Optional) String to be passed to script via --suffix
79template("generate_event_interfaces") {
80  action(target_name) {
81    # Write the file list to a unique temp file to avoid blowing out the
82    # command line length limit.
83    idl_files_list = "$target_gen_dir/${target_name}_file_list.tmp"
84    write_file(idl_files_list,
85               rebase_path(invoker.sources, root_build_dir))
86
87    source_prereqs = [
88      "//third_party/WebKit/Source/bindings/scripts/utilities.py",
89      idl_files_list,
90    ] + invoker.sources
91
92    output_file = "$root_gen_dir/blink/" + invoker.output_file
93    outputs = [ output_file ]
94
95    script = "//third_party/WebKit/Source/bindings/scripts/generate_event_interfaces.py"
96    args = [
97      "--event-idl-files-list",
98      rebase_path(idl_files_list, root_build_dir),
99      "--event-interfaces-file",
100      rebase_path(output_file, root_build_dir),
101      "--write-file-only-if-changed=1",  # Always true for Ninja.
102    ]
103
104    if (defined(invoker.suffix)) {
105      args += [ "--suffix", invoker.suffix ]
106    }
107  }
108}
109
110# Runs the idl_compiler script over a list of sources.
111#
112# Parameters:
113#   sources = list of IDL files to compile
114#   output_dir = string containing the directory to put the output files.
115template("idl_compiler") {
116  output_dir = invoker.output_dir
117
118  action_foreach(target_name) {
119    # TODO(brettw) GYP adds a "-S before the script name to skip "import site" to
120    # speed up startup. Figure out if we need this and do something similar (not
121    # really expressible in GN now).
122    script = "//third_party/WebKit/Source/bindings/scripts/idl_compiler.py"
123
124    source_prereqs =
125      idl_lexer_parser_files +  # to be explicit (covered by parsetab)
126      idl_compiler_files
127    source_prereqs += [
128      "$bindings_scripts_output_dir/lextab.py",
129      "$bindings_scripts_output_dir/parsetab.pickle",
130      "$bindings_scripts_output_dir/cached_jinja_templates.stamp",
131      "$bindings_dir/IDLExtendedAttributes.txt",
132      # If the dependency structure or public interface info (e.g.,
133      # [ImplementedAs]) changes, we rebuild all files, since we're not
134      # computing dependencies file-by-file in the build.
135      # This data is generally stable.
136      "$bindings_modules_output_dir/InterfacesInfoModules.pickle",
137    ]
138    # Further, if any dependency (partial interface or implemented
139    # interface) changes, rebuild everything, since every IDL potentially
140    # depends on them, because we're not computing dependencies
141    # file-by-file.
142    # FIXME: This is too conservative, and causes excess rebuilds:
143    # compute this file-by-file.  http://crbug.com/341748
144    # This should theoretically just be the IDL files passed in.
145    source_prereqs += all_dependency_idl_files
146
147    sources = invoker.sources
148    outputs = [
149      "$output_dir/V8{{source_name_part}}.cpp",
150      "$output_dir/V8{{source_name_part}}.h",
151    ]
152
153    args = [
154      "--cache-dir",
155      rebase_path(bindings_scripts_output_dir, root_build_dir),
156      "--output-dir",
157      rebase_path(output_dir, root_build_dir),
158      "--interfaces-info",
159      rebase_path("$bindings_modules_output_dir/InterfacesInfoModules.pickle",
160                  root_build_dir),
161      "--write-file-only-if-changed=1",  # Always true for Ninja.
162      "{{source}}",
163    ]
164
165    deps = [
166      # FIXME: should be interfaces_info_core (w/o modules)
167      # http://crbug.com/358074
168      "//third_party/WebKit/Source/bindings/modules:interfaces_info",
169
170      "//third_party/WebKit/Source/bindings/scripts:cached_lex_yacc_tables",
171      "//third_party/WebKit/Source/bindings/scripts:cached_jinja_templates",
172      "//third_party/WebKit/Source/core:generated_testing_idls",
173    ]
174  }
175}
176
177# Calls the aggregate_generated_bindings script.
178#
179# Parameters:
180#   sources = a list of source IDL files.
181#   component_dir = Name of directory for these files (one word, no slashes).
182#   outputs = a list of files to write to.
183template("aggregate_generated_bindings") {
184  action(target_name) {
185    script = "//third_party/WebKit/Source/bindings/scripts/aggregate_generated_bindings.py"
186
187    # Write lists of main IDL files to a file, so that the command lines don't
188    # exceed OS length limits.
189    idl_files_list = "$target_gen_dir/${target_name}_file_list.tmp"
190    write_file(idl_files_list, rebase_path(invoker.sources, root_build_dir))
191
192    source_prereqs = [ idl_files_list ] + invoker.sources
193    outputs = invoker.outputs
194
195    args = [
196      invoker.component_dir,
197      rebase_path(idl_files_list, root_build_dir),
198      "--",
199    ]
200    args += rebase_path(invoker.outputs, root_build_dir)
201  }
202}
203