66 lines
1.7 KiB
Rust
66 lines
1.7 KiB
Rust
use {
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crate::open,
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repc::layout::{Type, TypeVariant},
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std::{env, io::Write},
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};
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#[allow(unused_macros)]
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macro_rules! cenum {
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($name:ident, $uc:ident; $($name2:ident = $val:expr,)*) => {
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#[derive(Copy, Clone, Debug, Eq, PartialEq)]
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pub struct $name(pub i32);
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impl $name {
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pub fn raw(self) -> i32 {
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self.0
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}
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}
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pub const $uc: &[i32] = &[$($val,)*];
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$(
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pub const $name2: $name = $name($val);
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)*
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}
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}
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#[path = "fontconfig_consts.rs"]
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mod fontconfig;
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fn get_target() -> repc::Target {
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let rustc_target = env::var("TARGET").unwrap();
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repc::TARGET_MAP
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.iter()
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.cloned()
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.find(|t| t.0 == rustc_target)
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.unwrap()
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.1
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}
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fn get_enum_ty(variants: Vec<i128>) -> anyhow::Result<u64> {
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let target = get_target();
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let ty = Type {
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layout: (),
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annotations: vec![],
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variant: TypeVariant::Enum(variants),
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};
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let ty = repc::compute_layout(target, &ty)?;
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assert!(ty.layout.pointer_alignment_bits <= ty.layout.size_bits);
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Ok(ty.layout.size_bits)
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}
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fn write_ty<W: Write>(f: &mut W, vals: &[i32], ty: &str) -> anyhow::Result<()> {
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let variants: Vec<_> = vals.iter().cloned().map(|v| v as i128).collect();
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let size = get_enum_ty(variants)?;
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writeln!(f, "#[allow(clippy::allow_attributes, dead_code)]")?;
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writeln!(f, "pub type {} = i{};", ty, size)?;
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Ok(())
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}
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pub fn main() -> anyhow::Result<()> {
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let mut f = open("fontconfig_tys.rs")?;
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write_ty(&mut f, fontconfig::FC_MATCH_KINDS, "FcMatchKind")?;
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write_ty(&mut f, fontconfig::FC_RESULTS, "FcResult")?;
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Ok(())
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}
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