Ch 1.5 (finished chapter 1)
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6 changed files with 439 additions and 11 deletions
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@ -8,12 +8,82 @@ version = "1.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "de3887528ad530ba7bdbb1faa8275ec7a1155a45ffa57c37993960277145d640"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_i686_msvc"
|
||||||
|
version = "0.42.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "bf4d1122317eddd6ff351aa852118a2418ad4214e6613a50e0191f7004372605"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnu"
|
||||||
|
version = "0.42.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "c1040f221285e17ebccbc2591ffdc2d44ee1f9186324dd3e84e99ac68d699c45"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_gnullvm"
|
||||||
|
version = "0.42.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "628bfdf232daa22b0d64fdb62b09fcc36bb01f05a3939e20ab73aaf9470d0463"
|
||||||
|
|
||||||
|
[[package]]
|
||||||
|
name = "windows_x86_64_msvc"
|
||||||
|
version = "0.42.1"
|
||||||
|
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||||
|
checksum = "447660ad36a13288b1db4d4248e857b510e8c3a225c822ba4fb748c0aafecffd"
|
||||||
|
|
|
@ -1,9 +1,12 @@
|
||||||
[package]
|
[package]
|
||||||
name = "moose"
|
name = "moose"
|
||||||
version = "0.1.0"
|
version = "0.1.0"
|
||||||
|
authors =["Devon Tingley <dtingley@twilit.io>"]
|
||||||
|
description = "Oxidized interpretor for the monkey programming language"
|
||||||
edition = "2021"
|
edition = "2021"
|
||||||
|
|
||||||
[dependencies]
|
[dependencies]
|
||||||
|
clap = { version = "4.1.8", features = ["derive"] }
|
||||||
|
|
||||||
[dev-dependencies]
|
[dev-dependencies]
|
||||||
rstest = "0.16.0"
|
rstest = "0.16.0"
|
||||||
|
|
7
examples/basic.ms
Normal file
7
examples/basic.ms
Normal file
|
@ -0,0 +1,7 @@
|
||||||
|
print(5 + 5);
|
||||||
|
|
||||||
|
if (5 == 5) {
|
||||||
|
print(true);
|
||||||
|
} else {
|
||||||
|
print(false);
|
||||||
|
}
|
|
@ -17,8 +17,30 @@ pub fn tokenize(input: &str) -> Vec<Token> {
|
||||||
|
|
||||||
fn next_token(input: &mut Peekable<Chars>) -> Option<Token> {
|
fn next_token(input: &mut Peekable<Chars>) -> Option<Token> {
|
||||||
let tok = match input.next()? {
|
let tok = match input.next()? {
|
||||||
'=' => Token::Assign,
|
|
||||||
'+' => Token::Plus,
|
'+' => Token::Plus,
|
||||||
|
'-' => Token::Minus,
|
||||||
|
'*' => Token::Asterisk,
|
||||||
|
'/' => Token::ForwardSlash,
|
||||||
|
|
||||||
|
'!' => {
|
||||||
|
if input.peek() == Some(&'=') {
|
||||||
|
input.next();
|
||||||
|
Token::NotEqual
|
||||||
|
} else {
|
||||||
|
Token::Bang
|
||||||
|
}
|
||||||
|
}
|
||||||
|
'=' => {
|
||||||
|
if input.peek() == Some(&'=') {
|
||||||
|
input.next();
|
||||||
|
Token::Equal
|
||||||
|
} else {
|
||||||
|
Token::Assign
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
'<' => Token::LessThan,
|
||||||
|
'>' => Token::GreaterThan,
|
||||||
|
|
||||||
',' => Token::Comma,
|
',' => Token::Comma,
|
||||||
';' => Token::Semicolon,
|
';' => Token::Semicolon,
|
||||||
|
@ -56,8 +78,13 @@ fn read_ident(input: &mut Peekable<Chars>, first: char) -> Token {
|
||||||
// Check if our ident is a keyword
|
// Check if our ident is a keyword
|
||||||
let ident = toks.iter().cloned().collect::<String>();
|
let ident = toks.iter().cloned().collect::<String>();
|
||||||
match ident.as_str() {
|
match ident.as_str() {
|
||||||
|
"true" => Token::True,
|
||||||
|
"false" => Token::False,
|
||||||
"fn" => Token::Function,
|
"fn" => Token::Function,
|
||||||
"let" => Token::Let,
|
"let" => Token::Let,
|
||||||
|
"if" => Token::If,
|
||||||
|
"else" => Token::Else,
|
||||||
|
"return" => Token::Return,
|
||||||
|
|
||||||
ident => Token::Ident(ident.to_owned()),
|
ident => Token::Ident(ident.to_owned()),
|
||||||
}
|
}
|
||||||
|
@ -102,8 +129,60 @@ mod tests {
|
||||||
Token::Semicolon,
|
Token::Semicolon,
|
||||||
])]
|
])]
|
||||||
#[case(
|
#[case(
|
||||||
"
|
"!-/*5; 5 < 10 > 5;",
|
||||||
let five = 5;
|
vec![
|
||||||
|
Token::Bang,
|
||||||
|
Token::Minus,
|
||||||
|
Token::ForwardSlash,
|
||||||
|
Token::Asterisk,
|
||||||
|
Token::Int(5),
|
||||||
|
Token::Semicolon,
|
||||||
|
Token::Int(5),
|
||||||
|
Token::LessThan,
|
||||||
|
Token::Int(10),
|
||||||
|
Token::GreaterThan,
|
||||||
|
Token::Int(5),
|
||||||
|
Token::Semicolon,
|
||||||
|
])]
|
||||||
|
#[case(
|
||||||
|
"5 != 6",
|
||||||
|
vec![
|
||||||
|
Token::Int(5),
|
||||||
|
Token::NotEqual,
|
||||||
|
Token::Int(6),
|
||||||
|
])]
|
||||||
|
#[case(
|
||||||
|
"8 == 8",
|
||||||
|
vec![
|
||||||
|
Token::Int(8),
|
||||||
|
Token::Equal,
|
||||||
|
Token::Int(8),
|
||||||
|
])]
|
||||||
|
#[case(
|
||||||
|
"if (5 < 7) {
|
||||||
|
return true
|
||||||
|
} else {
|
||||||
|
return false
|
||||||
|
}",
|
||||||
|
vec![
|
||||||
|
Token::If,
|
||||||
|
Token::LeftParenthesis,
|
||||||
|
Token::Int(5),
|
||||||
|
Token::LessThan,
|
||||||
|
Token::Int(7),
|
||||||
|
Token::RightParenthesis,
|
||||||
|
Token::LeftBrace,
|
||||||
|
Token::Return,
|
||||||
|
Token::True,
|
||||||
|
Token::RightBrace,
|
||||||
|
Token::Else,
|
||||||
|
Token::LeftBrace,
|
||||||
|
Token::Return,
|
||||||
|
Token::False,
|
||||||
|
Token::RightBrace
|
||||||
|
])]
|
||||||
|
#[case(
|
||||||
|
"let five = 5;
|
||||||
let ten = 10;
|
let ten = 10;
|
||||||
|
|
||||||
let add = fn(x, y) {
|
let add = fn(x, y) {
|
||||||
|
|
|
@ -7,8 +7,18 @@ pub enum Token {
|
||||||
Int(i64),
|
Int(i64),
|
||||||
|
|
||||||
// Operators
|
// Operators
|
||||||
|
Bang,
|
||||||
|
|
||||||
Assign,
|
Assign,
|
||||||
Plus,
|
Plus,
|
||||||
|
Minus,
|
||||||
|
Asterisk,
|
||||||
|
ForwardSlash,
|
||||||
|
|
||||||
|
Equal,
|
||||||
|
NotEqual,
|
||||||
|
LessThan,
|
||||||
|
GreaterThan,
|
||||||
|
|
||||||
// Delimiters
|
// Delimiters
|
||||||
Comma,
|
Comma,
|
||||||
|
@ -20,6 +30,12 @@ pub enum Token {
|
||||||
RightBrace,
|
RightBrace,
|
||||||
|
|
||||||
// Keywords
|
// Keywords
|
||||||
|
True,
|
||||||
|
False,
|
||||||
|
|
||||||
Function,
|
Function,
|
||||||
Let,
|
Let,
|
||||||
|
If,
|
||||||
|
Else,
|
||||||
|
Return,
|
||||||
}
|
}
|
||||||
|
|
42
src/main.rs
42
src/main.rs
|
@ -1,5 +1,43 @@
|
||||||
|
use std::fs;
|
||||||
|
use std::io::{self, Write};
|
||||||
|
|
||||||
|
use clap::{CommandFactory, Parser};
|
||||||
|
|
||||||
mod lexer;
|
mod lexer;
|
||||||
|
|
||||||
fn main() {
|
#[derive(Parser)]
|
||||||
println!("{:?}", lexer::tokenize("asdf"));
|
#[command(author, version, about)]
|
||||||
|
struct Args {
|
||||||
|
path: Option<String>,
|
||||||
|
}
|
||||||
|
|
||||||
|
fn main() {
|
||||||
|
let args = Args::parse();
|
||||||
|
let cmd = Args::command();
|
||||||
|
|
||||||
|
match args.path {
|
||||||
|
Some(path) => {
|
||||||
|
let input = fs::read_to_string(&path).unwrap();
|
||||||
|
let tokens = lexer::tokenize(&input);
|
||||||
|
println!("{:?}", tokens);
|
||||||
|
}
|
||||||
|
|
||||||
|
None => start_repl(cmd.get_version().unwrap()),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn start_repl(version: &str) {
|
||||||
|
println!("Moose {} REPL", version);
|
||||||
|
let mut input = String::new();
|
||||||
|
loop {
|
||||||
|
print!("> ");
|
||||||
|
io::stdout().flush().expect("failed to write to stdout");
|
||||||
|
|
||||||
|
io::stdin()
|
||||||
|
.read_line(&mut input)
|
||||||
|
.expect("failed to read from stdin");
|
||||||
|
|
||||||
|
let tokens = lexer::tokenize(&input);
|
||||||
|
println!("{:?}", tokens);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in a new issue