libgir/codegen/
constants.rs

1use std::path::Path;
2
3use crate::{
4    analysis::imports::Imports,
5    codegen::general::{
6        self, cfg_condition, cfg_deprecated, doc_alias, version_condition, version_condition_string,
7    },
8    env::Env,
9    file_saver, library,
10};
11
12pub fn generate(env: &Env, root_path: &Path, mod_rs: &mut Vec<String>) {
13    let path = root_path.join("constants.rs");
14    let mut imports = Imports::new(&env.library);
15
16    if env.analysis.constants.is_empty() {
17        return;
18    }
19
20    let sys_crate_name = env.main_sys_crate_name();
21    imports.add("glib::GStr");
22    imports.add("crate::ffi");
23
24    file_saver::save_to_file(path, env.config.make_backup, |w| {
25        general::start_comments(w, &env.config)?;
26        general::uses(w, env, &imports, None)?;
27        writeln!(w)?;
28
29        mod_rs.push("\nmod constants;".into());
30
31        for constant in &env.analysis.constants {
32            let type_ = env.type_(constant.typ);
33            if let library::Type::Basic(library::Basic::Utf8) = type_ {
34                cfg_deprecated(w, env, None, constant.deprecated_version, false, 0)?;
35                cfg_condition(w, constant.cfg_condition.as_ref(), false, 0)?;
36                version_condition(w, env, None, constant.version, false, 0)?;
37                doc_alias(w, &constant.glib_name, "", 0)?;
38                writeln!(
39                    w,
40                    "pub static {name}: &GStr = unsafe{{GStr::from_utf8_with_nul_unchecked({sys_crate_name}::{c_id})}};",
41                    sys_crate_name = sys_crate_name,
42                    name = constant.name,
43                    c_id = constant.glib_name
44                )?;
45                if let Some(cfg) = version_condition_string(env, None, constant.version, false, 0) {
46                    mod_rs.push(cfg);
47                }
48                mod_rs.push(format!(
49                    "{}pub use self::constants::{};",
50                    constant
51                        .deprecated_version
52                        .map(|_| "#[allow(deprecated)]\n")
53                        .unwrap_or(""),
54                    constant.name
55                ));
56            }
57        }
58
59        Ok(())
60    });
61}