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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 | |
5 # Defines a static library corresponding to the output of schema compiler tools | |
6 # over a set of extensions API schemas (IDL or JSON format.) The library target | |
7 # has implicit hard dependencies on all schema files listed by the invoker and | |
8 # is itself a hard dependency. | |
9 # | |
10 # Invocations of this template may use the following variables: | |
11 # | |
12 # sources [required] A list of schema files to be compiled. | |
13 # | |
14 # root_namespace [required] | |
15 # A Python string substituion pattern used to generate the C++ | |
16 # namespace for each API. Use %(namespace)s to replace with the API | |
17 # namespace, like "toplevel::%(namespace)s_api". | |
18 # | |
19 # schema_include_rules [optional] | |
20 # A list of paths to include when searching for referenced objects, | |
21 # with the namespace separated by a :. | |
22 # Example: | |
23 # [ '/foo/bar:Foo::Bar::%(namespace)s' ] | |
24 # | |
25 # schemas [optional, default = false] | |
26 # Boolean indicating if the schema files should be generated. | |
27 # | |
28 # bundle [optional, default = false] | |
29 # Boolean indicating if the schema bundle files should be generated. | |
30 # | |
31 # bundle_registration [optional, default = false] | |
32 # Boolean indicating if the API registration bundle files should be generated. | |
33 # | |
34 # impl_dir [required if bundle_registration = true, otherwise unused] | |
35 # The path containing C++ implementations of API functions. This path is | |
36 # used as the root path when looking for {schema}/{schema}_api.h headers | |
37 # when generating API registration bundles. Such headers, if found, are | |
38 # automatically included by the generated code. | |
39 # | |
40 # uncompiled_sources [optional, only used when bundle = true or | |
41 # bundle_registration = true] | |
42 # A list of schema files which should not be compiled, but which should still | |
43 # be processed for API bundle generation. | |
44 # | |
45 # deps [optional] | |
46 # If any deps are specified they will be inherited by the static library | |
47 # target. | |
48 # | |
49 # The static library target also inherits the visibility and output_name | |
50 # of its invoker. | |
51 | |
52 template("generated_extensions_api") { | |
53 assert(defined(invoker.sources), | |
54 "\"sources\" must be defined for the $target_name template.") | |
55 assert(defined(invoker.root_namespace), | |
56 "\"root_namespace\" must be defined for the $target_name template.") | |
57 | |
58 schemas = defined(invoker.schemas) && invoker.schemas | |
59 bundle = defined(invoker.bundle) && invoker.bundle | |
60 bundle_registration = defined(invoker.bundle_registration) && | |
61 invoker.bundle_registration | |
62 | |
63 schema_include_rules = "" | |
64 if (defined(invoker.schema_include_rules)) { | |
65 schema_include_rules = invoker.schema_include_rules | |
66 } | |
67 | |
68 # Keep a copy of the target_name here since it will be trampled | |
69 # in nested targets. | |
70 target_visibility = [ ":$target_name" ] | |
71 | |
72 generated_config_name = target_name + "_generated_config" | |
73 config(generated_config_name) { | |
74 include_dirs = [ target_gen_dir ] | |
75 visibility = target_visibility | |
76 } | |
77 | |
78 sources = invoker.sources | |
79 root_namespace = invoker.root_namespace | |
80 | |
81 compiler_root = "//tools/json_schema_compiler" | |
82 compiler_script = "$compiler_root/compiler.py" | |
83 compiler_sources = [ | |
84 "$compiler_root/cc_generator.py", | |
85 "$compiler_root/code.py", | |
86 "$compiler_root/compiler.py", | |
87 "$compiler_root/cpp_generator.py", | |
88 "$compiler_root/cpp_type_generator.py", | |
89 "$compiler_root/cpp_util.py", | |
90 "$compiler_root/h_generator.py", | |
91 "$compiler_root/idl_schema.py", | |
92 "$compiler_root/model.py", | |
93 "$compiler_root/util_cc_helper.py", | |
94 ] | |
95 | |
96 if (schemas) { | |
97 schema_generator_name = target_name + "_schema_generator" | |
98 action_foreach(schema_generator_name) { | |
99 script = compiler_script | |
100 inputs = compiler_sources | |
101 outputs = [ | |
102 "$target_gen_dir/{{source_name_part}}.cc", | |
103 "$target_gen_dir/{{source_name_part}}.h", | |
104 ] | |
105 args = [ | |
106 "{{source}}", | |
107 "--root=" + rebase_path("//", root_build_dir), | |
108 "--destdir=" + rebase_path(root_gen_dir, root_build_dir), | |
109 "--namespace=$root_namespace", | |
110 "--generator=cpp", | |
111 "--include-rules=$schema_include_rules" ] | |
112 | |
113 if (defined(invoker.visibility)) { | |
114 # If visibility is restricted, add our own target to it. | |
115 visibility = [ invoker.visibility, target_visibility ] | |
116 } | |
117 } | |
118 } | |
119 | |
120 if (bundle) { | |
121 uncompiled_sources = [] | |
122 if (defined(invoker.uncompiled_sources)) { | |
123 uncompiled_sources = invoker.uncompiled_sources | |
124 } | |
125 | |
126 bundle_generator_schema_name = target_name + "_bundle_generator_schema" | |
127 action(bundle_generator_schema_name) { | |
128 script = compiler_script | |
129 inputs = compiler_sources + sources + uncompiled_sources | |
130 outputs = [ | |
131 "$target_gen_dir/generated_schemas.cc", | |
132 "$target_gen_dir/generated_schemas.h", | |
133 ] | |
134 args = [ | |
135 "--root=" + rebase_path("//", root_build_dir), | |
136 "--destdir=" + rebase_path(root_gen_dir, root_build_dir), | |
137 "--namespace=$root_namespace", | |
138 "--generator=cpp-bundle-schema", | |
139 "--include-rules=$schema_include_rules" ] | |
140 + rebase_path(sources, root_build_dir) | |
141 + rebase_path(uncompiled_sources, root_build_dir) | |
142 } | |
143 } | |
144 | |
145 if (bundle_registration) { | |
146 uncompiled_sources = [] | |
147 if (defined(invoker.uncompiled_sources)) { | |
148 uncompiled_sources = invoker.uncompiled_sources | |
149 } | |
150 | |
151 assert(defined(invoker.impl_dir), | |
152 "\"impl_dir\" must be defined for the $target_name template.") | |
153 impl_dir = invoker.impl_dir | |
154 | |
155 bundle_generator_registration_name = target_name + | |
156 "_bundle_generator_registration" | |
157 action(bundle_generator_registration_name) { | |
158 script = compiler_script | |
159 inputs = compiler_sources + sources + uncompiled_sources | |
160 outputs = [ | |
161 "$root_gen_dir/$impl_dir/generated_api_registration.cc", | |
162 "$root_gen_dir/$impl_dir/generated_api_registration.h", | |
163 ] | |
164 args = [ | |
165 "--root=" + rebase_path("//", root_build_dir), | |
166 "--destdir=" + rebase_path(root_gen_dir, root_build_dir), | |
167 "--namespace=$root_namespace", | |
168 "--generator=cpp-bundle-registration", | |
169 "--impl-dir=" + rebase_path(impl_dir, "//"), | |
170 "--include-rules=$schema_include_rules" ] | |
171 + rebase_path(sources, root_build_dir) | |
172 + rebase_path(uncompiled_sources, root_build_dir) | |
173 } | |
174 } | |
175 | |
176 source_set(target_name) { | |
177 sources = [] | |
178 deps = [] | |
179 public_deps = [] | |
180 | |
181 if (schemas) { | |
182 sources += get_target_outputs(":$schema_generator_name") | |
183 public_deps += [ ":$schema_generator_name" ] | |
184 deps += [ "//tools/json_schema_compiler:generated_api_util" ] | |
185 } | |
186 | |
187 if (bundle) { | |
188 sources += get_target_outputs(":$bundle_generator_schema_name") | |
189 deps += [ ":$bundle_generator_schema_name" ] | |
190 } | |
191 | |
192 if (bundle_registration) { | |
193 sources += get_target_outputs(":$bundle_generator_registration_name") | |
194 deps += [ ":$bundle_generator_registration_name" ] | |
195 } | |
196 | |
197 if (defined(invoker.deps)) { | |
198 deps += invoker.deps | |
199 } | |
200 direct_dependent_configs = [ ":$generated_config_name" ] | |
201 | |
202 if (defined(invoker.visibility)) { | |
203 visibility = invoker.visibility | |
204 } | |
205 if (defined(invoker.output_name)) { | |
206 output_name = invoker.output_name | |
207 } | |
208 } | |
209 } | |
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