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Allow passing grammar JS or JSON path to generate command

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This commit is contained in:
Max Brunsfeld 2019-01-14 14:07:42 -08:00
parent 8f48240bf1
commit def5884b59
3 changed files with 26 additions and 11 deletions
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12
cli/src/generate/mod.rs
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@ -28,12 +28,14 @@ lazy_static! {
pub fn generate_parser_in_directory(
repo_path: &PathBuf,
grammar_path: Option<&str>,
minimize: bool,
state_ids_to_log: Vec<usize>,
properties_only: bool,
) -> Result<()> {
if !properties_only {
let grammar_json = load_js_grammar_file(&repo_path.join("grammar.js"));
let grammar_path = grammar_path.map_or(repo_path.join("grammar.js"), |s| s.into());
let grammar_json = load_grammar_file(&grammar_path);
let c_code =
generate_parser_for_grammar_with_opts(&grammar_json, minimize, state_ids_to_log)?;
fs::create_dir_all("src")?;
@ -77,6 +79,14 @@ fn generate_parser_for_grammar_with_opts(
))
}
fn load_grammar_file(grammar_path: &PathBuf) -> String {
match grammar_path.extension().and_then(|e| e.to_str()) {
Some("js") => load_js_grammar_file(grammar_path),
Some("json") => fs::read_to_string(grammar_path).expect("Failed to read grammar file"),
_ => panic!("Unknown grammar file extension"),
}
}
fn load_js_grammar_file(grammar_path: &PathBuf) -> String {
let mut node_process = Command::new("node")
.stdin(Stdio::piped())