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//! Main function of the generator
/*
use config::Config;
use cpp_code_generator::{CppCodeGenerator, generate_cpp_type_size_requester, CppTypeSizeRequest};
use cpp_type::CppTypeClassBase;
use cpp_data::{CppData, CppDataWithDeps, ParserCppData};
use cpp_ffi_generator;
use cpp_parser;
use cpp_post_processor::cpp_post_process;
use common::errors::{Result, ResultExt};
use common::string_utils::CaseOperations;
use common::file_utils::{PathBufWithAdded, move_files, create_dir_all, save_json, load_bincode,
save_bincode, canonicalize, remove_dir_all, remove_dir, read_dir,
create_file, path_to_str};
use common::BuildScriptData;
use common::log;
use rust_code_generator;
use rust_generator;
use rust_info::{RustTypeWrapperKind, RustExportInfo, DependencyInfo};
use std::path::PathBuf;
use std::collections::HashMap;
/// Loads `RustExportInfo` and `CppData` or a dependency previously
/// processed in the cache directory `path`.
fn load_dependency(path: &PathBuf) -> Result<DependencyInfo> {
log::status(format!("Loading files from {}", path.display()));
let parser_cpp_data_path = path.join("parser_cpp_data.bin");
if !parser_cpp_data_path.exists() {
return Err(
format!("file not found: {}", parser_cpp_data_path.display()).into(),
);
}
let parser_cpp_data = load_bincode(&parser_cpp_data_path)?;
let processed_cpp_data_path = path.join("processed_cpp_data.bin");
if !processed_cpp_data_path.exists() {
return Err(
format!("file not found: {}", processed_cpp_data_path.display()).into(),
);
}
let processed_cpp_data = load_bincode(&processed_cpp_data_path)?;
let cpp_data = CppData {
parser: parser_cpp_data,
processed: processed_cpp_data,
};
let rust_export_info_path = path.join("rust_export_info.bin");
if !rust_export_info_path.exists() {
return Err(
format!("file not found: {}", rust_export_info_path.display()).into(),
);
}
let rust_export_info = load_bincode(&rust_export_info_path)?;
Ok(DependencyInfo {
rust_export_info: rust_export_info,
cpp_data: cpp_data,
cache_path: path.clone(),
})
}
/// Executes the generator for multiple configs.
pub fn exec<T: Iterator<Item = Config>>(configs: T) -> Result<()> {
let mut dependency_cache = HashMap::new();
for config in configs {
{
let cpp_data = load_or_create_cpp_data(
&config,
dependencies.iter().map(|dep| &dep.cpp_data).collect(),
)?;
let output_path_existed = config.output_dir_path().join("src").exists();
let c_lib_path = config.output_dir_path().join("c_lib");
let c_lib_path_existed = c_lib_path.exists();
let cpp_ffi_lib_name = format!("{}_c", &config.crate_properties().name());
let c_lib_tmp_path = if c_lib_path_existed {
let path = config.cache_dir_path().join("c_lib.new");
if path.exists() {
remove_dir_all(&path)?;
}
path
} else {
c_lib_path.clone()
};
create_dir_all(&c_lib_tmp_path)?;
log::status(format!(
"Generating C++ wrapper library ({})",
cpp_ffi_lib_name
));
let cpp_ffi_headers = cpp_ffi_generator::run(
&cpp_data,
cpp_ffi_lib_name.clone(),
config.cpp_ffi_generator_filters(),
).with_context(|| "FFI generator failed")?;
log::status(format!("Generating C++ wrapper code"));
let code_gen = CppCodeGenerator::new(cpp_ffi_lib_name.clone(), c_lib_tmp_path.clone());
code_gen.generate_template_files(
config.include_directives(),
)?;
code_gen.generate_files(&cpp_ffi_headers)?;
let crate_new_path = if output_path_existed {
let path = config.cache_dir_path().join(format!(
"{}.new",
&config.crate_properties().name()
));
if path.as_path().exists() {
remove_dir_all(&path)?;
}
path
} else {
config.output_dir_path().clone()
};
create_dir_all(&crate_new_path)?;
let rust_config = rust_code_generator::RustCodeGeneratorConfig {
crate_properties: config.crate_properties().clone(),
output_path: crate_new_path.clone(),
crate_template_path: config.crate_template_path().cloned(),
cpp_ffi_lib_name: cpp_ffi_lib_name.clone(),
generator_dependencies: &dependencies,
write_dependencies_local_paths: config.write_dependencies_local_paths(),
cpp_lib_version: config.cpp_lib_version().map(|s| s.into()),
};
log::status("Preparing Rust functions");
let rust_data = rust_generator::RustGeneratorInputData {
cpp_data: &cpp_data,
cpp_ffi_headers: cpp_ffi_headers,
dependency_types: dependencies
.iter()
.map(|dep| &dep.rust_export_info.rust_types as &[_])
.collect(),
crate_name: config.crate_properties().name().clone(),
// TODO: more universal prefix removal (#25)
remove_qt_prefix: remove_qt_prefix,
filtered_namespaces: config.cpp_filtered_namespaces().clone(),
}.run()
.with_context(|| "Rust data generator failed")?;
log::status(format!(
"Generating Rust crate code ({})",
&config.crate_properties().name()
));
rust_code_generator::run(rust_config, &rust_data)
.with_context(|| "Rust code generator failed")?;
let mut cpp_type_size_requests = Vec::new();
for type1 in &rust_data.processed_types {
if let RustTypeWrapperKind::Struct { ref size_const_name, .. } = type1.kind {
if let Some(ref size_const_name) = *size_const_name {
cpp_type_size_requests.push(CppTypeSizeRequest {
cpp_code: CppTypeClassBase {
name: type1.cpp_name.clone(),
template_arguments: type1.cpp_template_arguments.clone(),
}.to_cpp_code()?,
size_const_name: size_const_name.clone(),
});
}
}
}
{
let mut file = create_file(c_lib_tmp_path.join("type_sizes.cpp"))?;
file.write(generate_cpp_type_size_requester(
&cpp_type_size_requests,
config.include_directives(),
)?)?;
}
if c_lib_path_existed {
move_files(&c_lib_tmp_path, &c_lib_path)?;
}
let rust_export_info = RustExportInfo {
crate_name: config.crate_properties().name().clone(),
crate_version: config.crate_properties().version().clone(),
rust_types: rust_data.processed_types,
output_path: path_to_str(config.output_dir_path())?.to_string(),
};
if config.write_cache() {
let rust_export_path = config.cache_dir_path().join("rust_export_info.bin");
log::status("Saving Rust export info");
save_bincode(&rust_export_path, &rust_export_info)?;
log::status(format!(
"Rust export info is saved to file: {}",
rust_export_path.display()
));
}
if output_path_existed {
// move all generated top level files and folders (and delete corresponding old folders)
// but keep existing unknown top level files and folders, such as "target" or ".cargo"
for item in read_dir(&crate_new_path)? {
let item = item?;
move_files(
&crate_new_path.join(item.file_name()),
&config.output_dir_path().join(item.file_name()),
)?;
}
remove_dir(&crate_new_path)?;
}
save_json(
config.output_dir_path().join(
"build_script_data.json",
),
&BuildScriptData {
cpp_build_config: config.cpp_build_config().clone(),
cpp_wrapper_lib_name: cpp_ffi_lib_name,
cpp_lib_version: config.cpp_lib_version().map(|s| s.to_string()),
},
)?;
dependency_cache.insert(
config.cache_dir_path().clone(),
DependencyInfo {
cpp_data: cpp_data.current,
rust_export_info: rust_export_info,
cache_path: config.cache_dir_path().clone(),
},
);
}
for dep in dependencies {
dependency_cache.insert(dep.cache_path.clone(), dep);
}
}
log::status("cpp_to_rust generator finished");
Ok(())
}
*/