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Original file line number | Diff line number | Diff line change |
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use crate::tests::helpers::fixtures::scratch_dir; | ||
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||
use std::path::Path; | ||
use tree_sitter_loader::Loader; | ||
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#[test] | ||
fn detect_language_by_first_line_regex() { | ||
let strace_dir = tree_sitter_dir( | ||
r#"{ | ||
"name": "tree-sitter-strace", | ||
"version": "0.0.1", | ||
"tree-sitter": [ | ||
{ | ||
"scope": "source.strace", | ||
"file-types": [ | ||
"strace" | ||
], | ||
"first-line-regex": "[0-9:.]* *execve" | ||
} | ||
] | ||
} | ||
"#, | ||
"strace", | ||
); | ||
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let mut loader = Loader::with_parser_lib_path(scratch_dir().to_path_buf()); | ||
let config = loader | ||
.find_language_configurations_at_path(strace_dir.path(), false) | ||
.unwrap(); | ||
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// this is just to validate that we can read the package.json correctly | ||
assert_eq!(config[0].scope.as_ref().unwrap(), "source.strace"); | ||
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let file_name = strace_dir.path().join("strace.log"); | ||
std::fs::write(&file_name, "execve\nworld").unwrap(); | ||
assert_eq!( | ||
get_lang_scope(&mut loader, &file_name), | ||
Some("source.strace".into()) | ||
); | ||
|
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let file_name = strace_dir.path().join("strace.log"); | ||
std::fs::write(&file_name, "447845 execve\nworld").unwrap(); | ||
assert_eq!( | ||
get_lang_scope(&mut loader, &file_name), | ||
Some("source.strace".into()) | ||
); | ||
|
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let file_name = strace_dir.path().join("strace.log"); | ||
std::fs::write(&file_name, "hello\nexecve").unwrap(); | ||
assert!(get_lang_scope(&mut loader, &file_name).is_none()); | ||
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let file_name = strace_dir.path().join("strace.log"); | ||
std::fs::write(&file_name, "").unwrap(); | ||
assert!(get_lang_scope(&mut loader, &file_name).is_none()); | ||
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let dummy_dir = tree_sitter_dir( | ||
r#"{ | ||
"name": "tree-sitter-dummy", | ||
"version": "0.0.1", | ||
"tree-sitter": [ | ||
{ | ||
"scope": "source.dummy", | ||
"file-types": [ | ||
"dummy" | ||
] | ||
} | ||
] | ||
} | ||
"#, | ||
"dummy", | ||
); | ||
|
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// file-type takes precedence over first-line-regex | ||
loader | ||
.find_language_configurations_at_path(dummy_dir.path(), false) | ||
.unwrap(); | ||
let file_name = dummy_dir.path().join("strace.dummy"); | ||
std::fs::write(&file_name, "execve").unwrap(); | ||
assert_eq!( | ||
get_lang_scope(&mut loader, &file_name), | ||
Some("source.dummy".into()) | ||
); | ||
} | ||
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fn tree_sitter_dir(package_json: &str, name: &str) -> tempfile::TempDir { | ||
let temp_dir = tempfile::tempdir().unwrap(); | ||
std::fs::write(temp_dir.path().join("package.json"), package_json).unwrap(); | ||
std::fs::create_dir(temp_dir.path().join("src")).unwrap(); | ||
std::fs::create_dir(temp_dir.path().join("src/tree_sitter")).unwrap(); | ||
std::fs::write( | ||
temp_dir.path().join("src/grammar.json"), | ||
format!(r#"{{"name":"{name}"}}"#), | ||
) | ||
.unwrap(); | ||
std::fs::write( | ||
temp_dir.path().join("src/parser.c"), | ||
format!( | ||
r##" | ||
#include "tree_sitter/parser.h" | ||
#ifdef _WIN32 | ||
#define extern __declspec(dllexport) | ||
#endif | ||
extern const TSLanguage *tree_sitter_{name}(void) {{}} | ||
"## | ||
), | ||
) | ||
.unwrap(); | ||
std::fs::write( | ||
temp_dir.path().join("src/tree_sitter/parser.h"), | ||
include_str!("../../../lib/src/parser.h"), | ||
) | ||
.unwrap(); | ||
temp_dir | ||
} | ||
|
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// if we manage to get the language scope, it means we correctly detected the file-type | ||
fn get_lang_scope(loader: &mut Loader, file_name: &Path) -> Option<String> { | ||
loader | ||
.language_configuration_for_file_name(file_name) | ||
.unwrap() | ||
.and_then(|r| r.1.scope.clone()) | ||
} |
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