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b70a008360
Quoting from the BufWriter docs: >It is critical to call flush before BufWriter<W> is dropped. Though >dropping will attempt to flush the contents of the buffer, any errors >that happen in the process of dropping will be ignored. Calling flush >ensures that the buffer is empty and thus dropping will not even >attempt file operations.
95 lines
3.1 KiB
Rust
95 lines
3.1 KiB
Rust
// Copyright © SixtyFPS GmbH <info@slint.dev>
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// SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-Slint-Royalty-free-2.0 OR LicenseRef-Slint-Software-3.0
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use std::io::{BufWriter, Write};
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use std::path::Path;
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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let tests_file_path =
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std::path::Path::new(&std::env::var_os("OUT_DIR").unwrap()).join("test_functions.rs");
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let mut tests_file = BufWriter::new(std::fs::File::create(&tests_file_path)?);
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let prefix = Path::new(env!("CARGO_MANIFEST_DIR")).join("../..").canonicalize()?;
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for entry in walkdir::WalkDir::new(&prefix)
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.follow_links(false)
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.into_iter()
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.filter_entry(|entry| entry.file_name() != "target")
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{
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let entry = entry?;
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let path = entry.path();
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if path.extension().is_none_or(|e| e != "md" && e != "mdx") {
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continue;
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}
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let file = std::fs::read_to_string(path)?;
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let file = file.replace('\r', ""); // Remove \r, because Windows.
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const BEGIN_MARKER: &str = "\n```slint";
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if !file.contains(BEGIN_MARKER) {
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continue;
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}
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let stem = path
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.strip_prefix(&prefix)?
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.to_string_lossy()
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.replace('-', "ˍ")
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.replace(['/', '\\'], "Ⳇ")
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.replace(['.'], "ᐧ")
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.to_lowercase();
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writeln!(tests_file, "\nmod {stem} {{")?;
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let mut rest = file.as_str();
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let mut line = 1;
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while let Some(begin) = rest.find(BEGIN_MARKER) {
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line += rest[..begin].bytes().filter(|&c| c == b'\n').count() + 1;
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rest = rest[begin..].strip_prefix(BEGIN_MARKER).unwrap();
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// Permit `slint,no-preview` and `slint,no-auto-preview` but skip `slint,ignore` and others.
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rest = match rest.split_once('\n') {
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Some((",ignore", _)) => continue,
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Some((x, _)) if x.contains("no-test") => continue,
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Some((_, rest)) => rest,
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_ => continue,
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};
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let end = rest.find("\n```\n").ok_or_else(|| {
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format!("Could not find the end of a code snippet in {}", path.display())
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})?;
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let snippet = &rest[..end];
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if snippet.starts_with("{{#include") {
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// Skip non literal slint text
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continue;
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}
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rest = &rest[end..];
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write!(
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tests_file,
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r##"
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#[test]
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fn line_{}() {{
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crate::do_test("{}", "{}").unwrap();
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}}
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"##,
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line,
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snippet.escape_default(),
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path.to_string_lossy().escape_default()
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)?;
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line += snippet.bytes().filter(|&c| c == b'\n').count() + 1;
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}
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writeln!(tests_file, "}}")?;
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println!("cargo:rerun-if-changed={}", path.display());
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}
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tests_file.flush()?;
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println!("cargo:rustc-env=TEST_FUNCTIONS={}", tests_file_path.to_string_lossy());
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println!("cargo:rustc-env=SLINT_ENABLE_EXPERIMENTAL_FEATURES=1");
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Ok(())
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}
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