tree-sitter/lib/binding_rust/build.rs
Matthew Krupcale ee9a3c0ebb lib: remove utf8proc dependency (#436)
* Remove dependency on utf8proc

This removes the only external dependency on utf8proc for UTF-8 decoding. It does so by implementing its own UTF-8 decoder. This decoder is both faster and has a simpler API.

 * .gitmodules: remove utf8proc submodule
 * docs/section-2-using-parsers.md: remove requirement for utf8proc submodule
 * docs/section-6-contributing.md: likewise
 * lib/Cargo.toml: remove utf8proc subdirectory package include
 * lib/README.md: remove utf8proc subdirectory description
 * lib/binding_rust/build.rs: remove utf8proc compiler include directory
 * lib/src/lexer.c: remove utf8proc dependencies and types
 * lib/src/lib.c: remove utf8proc dependency
 * lib/src/unicode.h: define types for Unicode decoders
 * lib/src/utf16.{c,h}: implement more readable UTF-16 decoder
 * lib/src/utf8.{c,h}: implement fast UTF-8 decoder
 * lib/utf8proc: remove utf8proc submodule directory
 * script/build-lib: remove utf8proc compiler include directory
 * script/build-wasm: likewise

* Optimize ts_lexer__get_lookahead.

Try to favor non-failure code path and assign lookahead values directly to lexer

 * lib/src/lexer.c: optimize for non-failure code path

* Fix some compiler errors

 * lib/src/lexer.c: cast from signed to unsigned for decode_next result
 * lib/src/utf16.c: fix non-constant initializers for older compilers

* Remove some missed remnants of utf8proc

 * docs/section-2-using-parsers.md: only two include paths necessary now
 * lib/src/lib.c: no need to define UTF8PROC_STATIC

* Use ICU's utf8 and utf16 decoding routines

* Remove unnecessary casts when calling icu macros

* Check buffer length before attempting to decode a unicode character

* Use new unicode function when parsing Queries

Co-Authored-By: Matthew Krupcale <mkrupcale@matthewkrupcale.com>

* Mark libicu files as vendored for GitHub's stats
2019-10-14 11:18:39 -07:00

58 lines
1.7 KiB
Rust

extern crate cc;
use std::{env, fs};
use std::path::{Path, PathBuf};
fn main() {
println!("cargo:rerun-if-env-changed=TREE_SITTER_STATIC_ANALYSIS");
if env::var("TREE_SITTER_STATIC_ANALYSIS").is_ok() {
if let (Some(clang_path), Some(scan_build_path)) = (which("clang"), which("scan-build")) {
let clang_path = clang_path.to_str().unwrap();
let scan_build_path = scan_build_path.to_str().unwrap();
env::set_var(
"CC",
&format!(
"{} -analyze-headers --use-analyzer={} cc",
scan_build_path, clang_path
),
);
}
}
let mut config = cc::Build::new();
println!("cargo:rerun-if-env-changed=TREE_SITTER_TEST");
if env::var("TREE_SITTER_TEST").is_ok() {
config.define("TREE_SITTER_TEST", "");
}
let src_path = Path::new("src");
for entry in fs::read_dir(&src_path).unwrap() {
let entry = entry.unwrap();
let path = src_path.join(entry.file_name());
println!("cargo:rerun-if-changed={}", path.to_str().unwrap());
}
config
.flag_if_supported("-std=c99")
.flag_if_supported("-Wno-unused-parameter")
.include(src_path)
.include("include")
.file(src_path.join("lib.c"))
.file(Path::new("binding_rust").join("helper.c"))
.compile("tree-sitter");
}
fn which(exe_name: impl AsRef<Path>) -> Option<PathBuf> {
env::var_os("PATH").and_then(|paths| {
env::split_paths(&paths).find_map(|dir| {
let full_path = dir.join(&exe_name);
if full_path.is_file() {
Some(full_path)
} else {
None
}
})
})
}