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# Copyright 2019 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import annotations
from mesonbuild.templates.sampleimpl import SampleImpl
import re
lib_rust_template = '''#![crate_name = "{crate_file}"]
/* This function will not be exported and is not
* directly callable by users of this library.
*/
fn internal_function() -> i32 {{
return 0;
}}
pub fn {function_name}() -> i32 {{
return internal_function();
}}
'''
lib_rust_test_template = '''extern crate {crate_file};
fn main() {{
println!("printing: {{}}", {crate_file}::{function_name}());
}}
'''
lib_rust_meson_template = '''project('{project_name}', 'rust',
version : '{version}',
default_options : ['warning_level=3'])
shlib = static_library('{lib_name}', '{source_file}', install : true)
test_exe = executable('{test_exe_name}', '{test_source_file}',
link_with : shlib)
test('{test_name}', test_exe)
# Make this library usable as a Meson subproject.
{ltoken}_dep = declare_dependency(
include_directories: include_directories('.'),
link_with : shlib)
'''
hello_rust_template = '''
fn main() {{
let project_name = "{project_name}";
println!("This is project {{}}.\\n", project_name);
}}
'''
hello_rust_meson_template = '''project('{project_name}', 'rust',
version : '{version}',
default_options : ['warning_level=3'])
exe = executable('{exe_name}', '{source_name}',
install : true)
test('basic', exe)
'''
class RustProject(SampleImpl):
def __init__(self, options):
super().__init__()
self.name = options.name
self.version = options.version
def create_executable(self) -> None:
lowercase_token = re.sub(r'[^a-z0-9]', '_', self.name.lower())
source_name = lowercase_token + '.rs'
open(source_name, 'w', encoding='utf-8').write(hello_rust_template.format(project_name=self.name))
open('meson.build', 'w', encoding='utf-8').write(
hello_rust_meson_template.format(project_name=self.name,
exe_name=lowercase_token,
source_name=source_name,
version=self.version))
def create_library(self) -> None:
lowercase_token = re.sub(r'[^a-z0-9]', '_', self.name.lower())
uppercase_token = lowercase_token.upper()
function_name = lowercase_token[0:3] + '_func'
test_exe_name = lowercase_token + '_test'
lib_crate_name = lowercase_token
lib_rs_name = lowercase_token + '.rs'
test_rs_name = lowercase_token + '_test.rs'
kwargs = {'utoken': uppercase_token,
'ltoken': lowercase_token,
'header_dir': lowercase_token,
'function_name': function_name,
'crate_file': lib_crate_name,
'source_file': lib_rs_name,
'test_source_file': test_rs_name,
'test_exe_name': test_exe_name,
'project_name': self.name,
'lib_name': lowercase_token,
'test_name': lowercase_token,
'version': self.version,
}
open(lib_rs_name, 'w', encoding='utf-8').write(lib_rust_template.format(**kwargs))
open(test_rs_name, 'w', encoding='utf-8').write(lib_rust_test_template.format(**kwargs))
open('meson.build', 'w', encoding='utf-8').write(lib_rust_meson_template.format(**kwargs))
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