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Declare .slint enum in one place in i-slint-common

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This avoid repeating the enums both in the compiler and in
the runtime library, and register them in a bunch of other places.

So it should be easier to add enums and enum values

Since cbindgen doesn't see through the macro, generate the enum
manually
This commit is contained in:
Olivier Goffart 2022-04-14 19:17:48 +02:00 • committed by GitHub
parent 5a270313d2
commit e85e69fda0
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GPG key ID: 4AEE18F83AFDEB23
27 changed files with 366 additions and 520 deletions
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28
api/cpp/cbindgen.rs
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@ -2,11 +2,36 @@
// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-commercial
use anyhow::Context;
use std::io::Write;
use std::iter::Extend;
use std::path::{Path, PathBuf};
// cSpell: ignore compat constexpr corelib deps sharedvector pathdata
fn enums(path: &Path) -> anyhow::Result<()> {
let mut enums =
std::fs::File::create(path).context("Error creating slint_internal_enums.h file")?;
writeln!(enums, "#pragma once")?;
writeln!(enums, "// This file is auto-generated from {}", file!())?;
writeln!(enums, "namespace slint::cbindgen_private {{")?;
macro_rules! print_enums {
($( $(#[doc = $enum_doc:literal])* enum $Name:ident { $( $(#[doc = $value_doc:literal])* $Value:ident,)* })*) => {
$(
$(writeln!(enums, "///{}", $enum_doc)?;)*
writeln!(enums, "enum class {} {{", stringify!($Name))?;
$(
$(writeln!(enums, " ///{}", $value_doc)?;)*
writeln!(enums, " {},", i_slint_common::enums::cpp_escape_keyword(stringify!($Value).trim_start_matches("r#")))?;
)*
writeln!(enums, "}};")?;
)*
}
}
i_slint_common::for_each_enums!(print_enums);
writeln!(enums, "}}")?;
Ok(())
}
fn ensure_cargo_rerun_for_crate(
crate_dir: &Path,
dependencies: &mut Vec<PathBuf>,
@ -314,6 +339,7 @@ fn gen_corelib(
// .with_src(crate_dir.join("input.rs"))
.with_src(crate_dir.join("item_rendering.rs"))
.with_src(crate_dir.join("window.rs"))
.with_include("slint_enums_internal.h")
.generate()
.with_context(|| format!("Unable to generate bindings for {}", internal_header))?
.write_to_file(include_dir.join(internal_header));
@ -399,6 +425,7 @@ fn gen_corelib(
.with_include("slint_pathdata.h")
.with_include("slint_brush.h")
.with_include("slint_generated_public.h")
.with_include("slint_enums_internal.h")
.with_after_include(
r"
namespace slint {
@ -594,6 +621,7 @@ pub fn gen_all(root_dir: &Path, include_dir: &Path) -> anyhow::Result<Vec<PathBu
proc_macro2::fallback::force(); // avoid a abort if panic=abort is set
std::fs::create_dir_all(include_dir).context("Could not create the include directory")?;
let mut deps = Vec::new();
enums(&include_dir.join("slint_enums_internal.h"))?;
gen_corelib(root_dir, include_dir, &mut deps)?;
gen_backend_qt(root_dir, include_dir, &mut deps)?;
gen_backend_selector(root_dir, include_dir, &mut deps)?;