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https://github.com/ProvableHQ/leo.git
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76 lines
2.4 KiB
Rust
76 lines
2.4 KiB
Rust
// Copyright (C) 2019-2022 Aleo Systems Inc.
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// This file is part of the Leo library.
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// The Leo library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// The Leo library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
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use leo_ast::Ast;
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use leo_errors::emitter::Handler;
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use leo_span::symbol::create_session_if_not_set_then;
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use clap::StructOpt;
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use std::{
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fs,
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path::{Path, PathBuf},
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};
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#[derive(Debug, StructOpt)]
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#[structopt(name = "leo parser", about = "Parse Leo AST and store it as a JSON")]
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struct Opt {
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/// Path to the Leo file.
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#[structopt(parse(from_os_str))]
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input_path: PathBuf,
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/// Optional path to the output directory.
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#[structopt(parse(from_os_str))]
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out_dir_path: Option<PathBuf>,
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/// Whether to print result to STDOUT.
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#[structopt(short, long)]
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print_stdout: bool,
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}
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fn main() -> Result<(), String> {
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let opt = Opt::parse();
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// Parses the Leo file constructing an ast which is then serialized.
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let serialized_leo_tree = create_session_if_not_set_then(|s| {
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let code = s.source_map.load_file(&opt.input_path).expect("failed to open file");
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Handler::with(|h| {
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let ast = leo_parser::parse_ast(h, &code.src, code.start_pos)?;
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let json = Ast::to_json_string(&ast)?;
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println!("{}", json);
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Ok(json)
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})
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.map_err(|b| b.to_string())
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})?;
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if opt.print_stdout {
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println!("{}", serialized_leo_tree);
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}
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let out_path = if let Some(out_dir) = opt.out_dir_path {
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format!(
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"{}/{}.json",
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out_dir.as_path().display(),
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opt.input_path.file_stem().unwrap().to_str().unwrap()
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)
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} else {
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format!("./{}.json", opt.input_path.file_stem().unwrap().to_str().unwrap())
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};
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fs::write(Path::new(&out_path), serialized_leo_tree).expect("failed to write output");
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Ok(())
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}
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