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use std::io::Write;
use std::path::Path;
use std::{fs::File, process::Command};
use indoc::{formatdoc, writedoc};
pub fn mod_commented(s: impl AsRef<str>) -> String {
s.as_ref()
.lines()
.map(|l| format!("///! {l}"))
.collect::<Vec<String>>()
.join("\n")
}
pub fn commented(s: impl AsRef<str>) -> String {
s.as_ref()
.lines()
.map(|l| format!("// {l}"))
.collect::<Vec<String>>()
.join("\n")
}
fn main() -> Result<(), Box<dyn std::error::Error>> {
// rerun if we update the version of libikarus
println!("cargo:rerun-if-changed=Cargo.toml");
let types = ikarusdef::get_types();
let out_dir_env = std::env::var_os("OUT_DIR").expect("OUT_DIR not defined");
let out_dir = Path::new(&out_dir_env);
let mut files = vec![];
for r#type in &types {
let filename = out_dir.join(format!("{}.rs", r#type.name));
files.push(filename.clone());
let mut file = File::create(filename)?;
let type_name = r#type.name;
let type_description = mod_commented(r#type.description);
let type_functions = r#type
.functions
.iter()
.map(|func| {
let func_name = &func.name;
let func_description = commented(func.description);
let func_log_level = &func.log_level;
let func_db_access = &func.db_access;
let versions = func
.versions
.iter()
.enumerate()
.map(|(i, version)| {
let version_flags_discrims = version
.flags
.iter()
.map(|f| format!("{}\n{}", commented(f.description), f.name))
.collect::<Vec<String>>()
.join(",\n");
let version_flags = formatdoc!(
r#"
pub enum Flags {{
{version_flags_discrims}
}}
"#
);
let version_return = if let Some(ret) = &version.r#return {
formatdoc!(
r#"
pub struct ReturnType {{
{}
pub {} : {},
// Indicates the result of the operation
pub return_status: StatusCode,
}}
"#,
commented(ret.description),
ret.name,
ret.r#type
)
} else {
formatdoc!(
r#"
pub struct ReturnType {{
pub return_status: StatusCode,
}}
"#
)
};
let version_func_description =
version.description.unwrap_or(&func_description);
let version_log_level = version.log_level.unwrap_or(*func_log_level);
let version_db_access = version.db_access.unwrap_or(*func_db_access);
let version_func_params = version
.parameters
.iter()
.map(|p| {
format!("{}\n{}: {}", commented(p.description), p.name, p.r#type)
})
.collect::<Vec<String>>()
.join(", ");
let version_func = formatdoc!(
r#"
{version_func_description}
pub fn call({version_func_params}) -> Result<ReturnType, Error> {{
Err(Error::NotImplemented)
}}
"#
);
formatdoc!(
r#"
pub mod version{} {{
use crate::types::*;
{version_return}
{version_flags}
{version_func}
}}
"#,
i
)
})
.collect::<Vec<String>>()
.join("\n\n");
formatdoc!(
r#"
pub mod {func_name} {{
{versions}
}}
"#
)
})
.collect::<Vec<String>>()
.join("\n\n");
writedoc!(
file,
r#"
{type_description}
pub mod {type_name} {{
{type_functions}
}}
"#
)?;
file.sync_data()?;
}
Command::new("rustfmt")
.args(files)
.spawn()?
.wait_with_output()?;
Ok(())
}