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89 lines
2.6 KiB
89 lines
2.6 KiB
/** |
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* Copyright 2020 Garrit Franke |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* https://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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extern crate rust_embed; |
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extern crate structopt; |
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use crate::Opt::Build; |
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use std::fs::File; |
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use std::io::Read; |
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use std::io::Write; |
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use std::path::PathBuf; |
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use structopt::StructOpt; |
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mod generator; |
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mod lexer; |
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mod parser; |
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#[cfg(test)] |
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mod tests; |
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mod util; |
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use rust_embed::RustEmbed; |
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#[derive(RustEmbed)] |
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#[folder = "lib/"] |
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pub struct Lib; |
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#[derive(RustEmbed)] |
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#[folder = "builtin/"] |
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pub struct Builtins; |
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#[derive(StructOpt, Debug)] |
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enum Opt { |
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#[structopt()] |
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Build { |
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#[structopt(default_value = "./examples/playground.sb")] |
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in_file: PathBuf, |
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#[structopt(short, long, default_value = "./examples_out/playground.js")] |
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out_file: PathBuf, |
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}, |
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} |
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fn main() -> Result<(), String> { |
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let opts = Opt::from_args(); |
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let (in_file, out_file) = match opts { |
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Build { in_file, out_file } => (in_file, out_file), |
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}; |
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let mut file = File::open(in_file).expect("Could not open file"); |
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let mut contents = String::new(); |
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file.read_to_string(&mut contents) |
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.expect("Could not read file"); |
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let tokens = lexer::tokenize(&contents); |
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let mut program = parser::parse(tokens, Some(contents))?; |
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// C Backend currently does not support stdlib yet, since not all features are implemented |
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#[cfg(features = "backend_node")] |
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{ |
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let stdlib = build_stdlib(); |
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program.merge_with(stdlib); |
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} |
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let output = generator::generate(program); |
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let mut file = std::fs::File::create(out_file).expect("create failed"); |
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file.write_all(output.as_bytes()).expect("write failed"); |
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file.flush().expect("Could not flush file"); |
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Ok(()) |
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} |
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fn build_stdlib() -> parser::node_type::Program { |
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let stdlib_raw = |
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Lib::get("stdio.sb").expect("Standard library not found. This should not occur."); |
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let stblib_str = |
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std::str::from_utf8(&stdlib_raw).expect("Could not interpret standard library."); |
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let stdlib_tokens = lexer::tokenize(&stblib_str); |
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parser::parse(stdlib_tokens, Some(stblib_str.into())).expect("Could not parse stdlib") |
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}
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