forked from AbleOS/ableos
Added locations to Tokens in the parser
This commit is contained in:
Talha Qamar
parent
86e1020bc7
commit
0775d0c70a
|
|
@ -1,66 +1,71 @@
|
|||
pub mod protocol;
|
||||
mod parser;
|
||||
|
||||
use crate::idl::parser::parse;
|
||||
use std::io::Read;
|
||||
|
||||
use self::parser::parse;
|
||||
|
||||
use logos::Logos;
|
||||
use logos::{Lexer, Logos, Skip};
|
||||
|
||||
#[derive(Logos, Debug, PartialEq, Clone)]
|
||||
#[logos(skip r"[ \t\n\f]+")] // Ignore this regex pattern between tokens
|
||||
#[logos(extras = (usize, usize))]
|
||||
enum Token {
|
||||
#[regex("//[^\n]*\n", logos::skip)]
|
||||
#[regex("//[^\n]*", logos::skip)]
|
||||
Comment,
|
||||
|
||||
#[regex(r"[ \t\f]+", logos::skip)]
|
||||
Ignored,
|
||||
|
||||
// Tokens can be literal strings, of any length.
|
||||
#[token("protocol")]
|
||||
Protocol,
|
||||
#[regex(r"\n", newline_callback)]
|
||||
Newline,
|
||||
|
||||
// Tokens can be literal strings, of any length.
|
||||
#[token("type")]
|
||||
Type,
|
||||
#[token("fn", priority = 5)]
|
||||
Fn,
|
||||
#[token("protocol", get_token_position)]
|
||||
Protocol((usize,usize)),
|
||||
|
||||
#[token("enum")]
|
||||
Enum,
|
||||
// Tokens can be literal strings, of any length.
|
||||
#[token("type", get_token_position)]
|
||||
Type((usize, usize)),
|
||||
|
||||
#[token("struct")]
|
||||
Struct,
|
||||
#[token("fn", priority = 5, callback = get_token_position)]
|
||||
Fn((usize, usize)),
|
||||
|
||||
#[token("{")]
|
||||
LBrace,
|
||||
#[token("enum", get_token_position)]
|
||||
Enum((usize, usize)),
|
||||
|
||||
#[token("}")]
|
||||
RBrace,
|
||||
#[token("struct", get_token_position)]
|
||||
Struct((usize, usize)),
|
||||
|
||||
#[token("(")]
|
||||
LParen,
|
||||
#[token("{", get_token_position)]
|
||||
LBrace((usize, usize)),
|
||||
|
||||
#[token(")")]
|
||||
RParen,
|
||||
#[token("}", get_token_position)]
|
||||
RBrace((usize, usize)),
|
||||
|
||||
#[token(":")]
|
||||
Colon,
|
||||
#[token("(", get_token_position)]
|
||||
LParen((usize, usize)),
|
||||
|
||||
#[token(";")]
|
||||
SemiColon,
|
||||
#[token(")", get_token_position)]
|
||||
RParen((usize, usize)),
|
||||
|
||||
#[token(",")]
|
||||
Comma,
|
||||
#[token(":", get_token_position)]
|
||||
Colon((usize, usize)),
|
||||
|
||||
#[token("=")]
|
||||
Equal,
|
||||
#[token(";", get_token_position)]
|
||||
SemiColon((usize, usize)),
|
||||
|
||||
#[token("->")]
|
||||
RArrow,
|
||||
#[token(",", get_token_position)]
|
||||
Comma((usize, usize)),
|
||||
|
||||
#[regex("[a-zA-Z_][a-zA-Z_1234567890]+", |lex|{lex.slice().to_string()})]
|
||||
Identifier(String),
|
||||
#[token("=", get_token_position)]
|
||||
Equal((usize, usize)),
|
||||
|
||||
#[regex("[1234567890]+", |lex|{lex.slice().parse::<u64>().unwrap()})]
|
||||
Number(u64),
|
||||
#[token("->", get_token_position)]
|
||||
RArrow((usize, usize)),
|
||||
|
||||
#[regex("[a-zA-Z_][a-zA-Z_1234567890]+", |lex|{let text = lex.slice().to_string(); let (line, col) = get_token_position(lex); (line, col, text)})]
|
||||
Identifier((usize, usize, String)),
|
||||
|
||||
#[regex("[1234567890]+", |lex|{let num = lex.slice().parse::<u64>().unwrap(); let (line, col) = get_token_position(lex); (line, col, num) })]
|
||||
Number((usize, usize, u64)),
|
||||
|
||||
#[regex(r"@[a-zA-Z_]+", /*|lex|{lex.slice().to_string()}*/ logos::skip)]
|
||||
Decorator,
|
||||
|
|
@ -76,7 +81,6 @@ pub fn build_idl(name: String) {
|
|||
for x in lex {
|
||||
match x {
|
||||
Ok(token) => {
|
||||
println!("{:?}", token);
|
||||
tokens.push(token);
|
||||
}
|
||||
Err(err) => println!("{:?}", err),
|
||||
|
|
@ -93,3 +97,17 @@ fn open_protocol(name: String) -> String {
|
|||
file.read_to_string(&mut contents).unwrap();
|
||||
contents
|
||||
}
|
||||
|
||||
fn get_token_position(lex : &mut Lexer<Token>) -> (usize, usize) {
|
||||
let line = lex.extras.0;
|
||||
let column = lex.span().start - lex.extras.1;
|
||||
|
||||
(line, column + 1)
|
||||
}
|
||||
|
||||
/// Update the line count and the char index.
|
||||
fn newline_callback(lex: &mut Lexer<Token>) -> Skip {
|
||||
lex.extras.0 += 1;
|
||||
lex.extras.1 = lex.span().end;
|
||||
Skip
|
||||
}
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@ enum Declaration{
|
|||
TypeDeclaration(TypeDeclaration),
|
||||
ProtocolDeclaration(ProtocolDeclaration),
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, PartialEq)]
|
||||
struct StructDeclaration {
|
||||
name : String,
|
||||
|
|
@ -51,17 +52,19 @@ struct FuncDeclaration {
|
|||
return_type : String,
|
||||
}
|
||||
|
||||
|
||||
/// Consume's a token that's expected. If the token that's consumed is not
|
||||
/// the given expected token then panic
|
||||
fn consume(tokens : &mut Peekable<Iter<'_, Token>>, token : Token) {
|
||||
let a = tokens.next();
|
||||
match a {
|
||||
None => panic!("Expected {:?}, Got End Of File", token),
|
||||
Some(a) => if *a != token {
|
||||
panic!("Expected {:?}, Got {:?}", token, *a);
|
||||
macro_rules! consume {
|
||||
($tokens:ident, $token_type:path) => {
|
||||
let a = $tokens.next();
|
||||
match a {
|
||||
None => panic!("Expected {}, Got End Of Tokens", stringify!($token_type)),
|
||||
Some(t) => {
|
||||
if matches!(t, $token_type(_)){}
|
||||
else {
|
||||
panic!("Expected {:?}, Got {:?}", stringify!($token_type), t);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
pub fn parse(tokens : Vec<Token>) -> AST{
|
||||
|
|
@ -84,29 +87,29 @@ fn declaration(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<Declaration> {
|
|||
match tokens.peek(){
|
||||
None => None,
|
||||
Some(tok) => match tok {
|
||||
Token::Enum => Some(enum_decl(tokens)),
|
||||
Token::Struct => Some(struct_decl(tokens)),
|
||||
Token::Type => Some(type_declaration(tokens)),
|
||||
Token::Protocol => Some(protocol_declaration(tokens)),
|
||||
Token::Enum(_) => Some(enum_decl(tokens)),
|
||||
// Token::Struct(_) => Some(struct_decl(tokens)),
|
||||
// Token::Type(_) => Some(type_declaration(tokens)),
|
||||
// Token::Protocol(_) => Some(protocol_declaration(tokens)),
|
||||
_ => None,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn enum_decl(tokens : &mut Peekable<Iter<'_, Token>>) -> Declaration {
|
||||
consume(tokens, Token::Enum);
|
||||
consume!(tokens, Token::Enum);
|
||||
let name = identifier(tokens).expect("Expected Identifier after `enum`");
|
||||
consume(tokens, Token::LBrace);
|
||||
consume!(tokens, Token::LBrace);
|
||||
let mut members = Vec::new();
|
||||
|
||||
match tokens.peek().expect("Unexpected EOF after LBrace") {
|
||||
Token::RBrace => {}, // skip checking for enum_members if empty
|
||||
Token::RBrace(_) => {}, // skip checking for enum_members if empty
|
||||
_ => {
|
||||
enum_members(tokens, &mut members);
|
||||
},
|
||||
}
|
||||
|
||||
consume(tokens, Token::RBrace);
|
||||
consume!(tokens, Token::RBrace);
|
||||
|
||||
Declaration::EnumDeclaration(EnumDeclaration{name, members})
|
||||
}
|
||||
|
|
@ -115,8 +118,8 @@ fn enum_members(tokens : &mut Peekable<Iter<'_, Token>>, members: &mut Vec<EnumM
|
|||
members.push(enum_member(tokens).unwrap());
|
||||
loop {
|
||||
match tokens.peek().expect("Unexpected EOF inside enum declaration") {
|
||||
Token::Comma => {
|
||||
consume(tokens, Token::Comma);
|
||||
Token::Comma(_) => {
|
||||
consume!(tokens, Token::Comma);
|
||||
if let Some(member) = enum_member(tokens) {
|
||||
members.push(member);
|
||||
} else {
|
||||
|
|
@ -131,68 +134,68 @@ fn enum_members(tokens : &mut Peekable<Iter<'_, Token>>, members: &mut Vec<EnumM
|
|||
fn enum_member(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<EnumMember> {
|
||||
let name = identifier(tokens);
|
||||
if let Some(name) = name {
|
||||
consume(tokens, Token::Equal);
|
||||
consume!(tokens, Token::Equal);
|
||||
let number = parse_number(tokens).expect("Expected Number after `=`");
|
||||
Some(EnumMember{name, number})
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
fn struct_decl(tokens : &mut Peekable<Iter<'_, Token>>) -> Declaration {
|
||||
consume(tokens, Token::Struct);
|
||||
let name = identifier(tokens).expect("Expected Identifier after `struct`");
|
||||
consume(tokens, Token::LBrace);
|
||||
let mut members = Vec::new();
|
||||
|
||||
match tokens.peek().expect("Unexpected EOF after LBrace") {
|
||||
Token::RBrace => {}, // skip checking for struct_members if empty
|
||||
_ => {
|
||||
struct_members(tokens, &mut members);
|
||||
},
|
||||
}
|
||||
|
||||
consume(tokens, Token::RBrace);
|
||||
|
||||
Declaration::StructDeclaration(StructDeclaration{name, members})
|
||||
}
|
||||
|
||||
fn struct_members(tokens : &mut Peekable<Iter<'_, Token>>, members: &mut Vec<StructMember>) {
|
||||
members.push(struct_member(tokens).unwrap());
|
||||
loop {
|
||||
match tokens.peek().expect("Unexpected EOF inside struct declaration") {
|
||||
Token::Comma => {
|
||||
consume(tokens, Token::Comma);
|
||||
if let Some(member) = struct_member(tokens) {
|
||||
members.push(member);
|
||||
} else {
|
||||
break;
|
||||
}
|
||||
},
|
||||
_ => {},
|
||||
}
|
||||
}
|
||||
}
|
||||
fn struct_member(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<StructMember> {
|
||||
let name = identifier(tokens);
|
||||
if let Some(name) = name {
|
||||
consume(tokens, Token::Colon);
|
||||
let type_name = identifier(tokens).expect("Expected Type after Colon");
|
||||
Some(StructMember{name, type_name})
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
fn type_declaration(tokens : &mut Peekable<Iter<'_, Token>>) -> Declaration {
|
||||
consume(tokens, Token::Type);
|
||||
let name = identifier(tokens).expect("Expected Identifier after `type`");
|
||||
let type_name = identifier(tokens).expect("Expected type after Identifier");
|
||||
Declaration::TypeDeclaration(TypeDeclaration{name, type_name})
|
||||
}
|
||||
//
|
||||
// fn struct_decl(tokens : &mut Peekable<Iter<'_, Token>>) -> Declaration {
|
||||
// consume(tokens, Token::Struct);
|
||||
// let name = identifier(tokens).expect("Expected Identifier after `struct`");
|
||||
// consume(tokens, Token::LBrace);
|
||||
// let mut members = Vec::new();
|
||||
//
|
||||
// match tokens.peek().expect("Unexpected EOF after LBrace") {
|
||||
// Token::RBrace => {}, // skip checking for struct_members if empty
|
||||
// _ => {
|
||||
// struct_members(tokens, &mut members);
|
||||
// },
|
||||
// }
|
||||
//
|
||||
// consume(tokens, Token::RBrace);
|
||||
//
|
||||
// Declaration::StructDeclaration(StructDeclaration{name, members})
|
||||
// }
|
||||
//
|
||||
// fn struct_members(tokens : &mut Peekable<Iter<'_, Token>>, members: &mut Vec<StructMember>) {
|
||||
// members.push(struct_member(tokens).unwrap());
|
||||
// loop {
|
||||
// match tokens.peek().expect("Unexpected EOF inside struct declaration") {
|
||||
// Token::Comma => {
|
||||
// consume(tokens, Token::Comma);
|
||||
// if let Some(member) = struct_member(tokens) {
|
||||
// members.push(member);
|
||||
// } else {
|
||||
// break;
|
||||
// }
|
||||
// },
|
||||
// _ => {},
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// fn struct_member(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<StructMember> {
|
||||
// let name = identifier(tokens);
|
||||
// if let Some(name) = name {
|
||||
// consume(tokens, Token::Colon);
|
||||
// let type_name = identifier(tokens).expect("Expected Type after Colon");
|
||||
// Some(StructMember{name, type_name})
|
||||
// } else {
|
||||
// None
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// fn type_declaration(tokens : &mut Peekable<Iter<'_, Token>>) -> Declaration {
|
||||
// consume(tokens, Token::Type);
|
||||
// let name = identifier(tokens).expect("Expected Identifier after `type`");
|
||||
// let type_name = identifier(tokens).expect("Expected type after Identifier");
|
||||
// Declaration::TypeDeclaration(TypeDeclaration{name, type_name})
|
||||
// }
|
||||
fn identifier(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<String> {
|
||||
let result = tokens.peek().map_or(None, |x| match x {
|
||||
Token::Identifier(s) => {
|
||||
Token::Identifier((_, _, s)) => {
|
||||
Some(s.to_string())
|
||||
},
|
||||
_ => None
|
||||
|
|
@ -206,7 +209,7 @@ fn identifier(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<String> {
|
|||
}
|
||||
fn parse_number(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<u64> {
|
||||
let result = tokens.peek().map_or(None, |x| match x {
|
||||
Token::Number(s) => Some(*s),
|
||||
Token::Number((_, _, s)) => Some(*s),
|
||||
_ => None
|
||||
});
|
||||
if let Some(_) = result {
|
||||
|
|
@ -214,61 +217,61 @@ fn parse_number(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<u64> {
|
|||
}
|
||||
result
|
||||
}
|
||||
|
||||
fn protocol_declaration(tokens : &mut Peekable<Iter<'_, Token>>) -> Declaration {
|
||||
consume(tokens, Token::Protocol);
|
||||
let name = identifier(tokens).expect("Expected Identifier after `protocol`");
|
||||
consume(tokens, Token::LBrace);
|
||||
let mut interface = Vec::new();
|
||||
match tokens.peek().expect("Unexpected EOF after LBrace") {
|
||||
Token::RBrace => {},
|
||||
_ => {
|
||||
functions(tokens, &mut interface);
|
||||
},
|
||||
};
|
||||
Declaration::ProtocolDeclaration(ProtocolDeclaration{name, interface})
|
||||
}
|
||||
|
||||
fn functions(tokens : &mut Peekable<Iter<'_, Token>>, interface : &mut Vec<FuncDeclaration>) {
|
||||
loop {
|
||||
match function(tokens) {
|
||||
Some(x) => interface.push(x),
|
||||
None => break,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn function(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<FuncDeclaration>{
|
||||
if let Some(Token::Fn) = tokens.peek() {
|
||||
consume(tokens, Token::Fn);
|
||||
let name = identifier(tokens).expect("Expected Identifier after `fn`");
|
||||
consume(tokens, Token::LParen);
|
||||
let arg_list = arg_list(tokens);
|
||||
consume(tokens, Token::RParen);
|
||||
consume(tokens, Token::RArrow);
|
||||
let return_type = identifier(tokens).expect("Expected return type after `->");
|
||||
Some(FuncDeclaration{name, arg_list, return_type})
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
fn arg_list(tokens : &mut Peekable<Iter<'_, Token>>) -> Vec<String> {
|
||||
let mut result = Vec::new();
|
||||
loop {
|
||||
match identifier(tokens) {
|
||||
None => break,
|
||||
Some(i) =>{
|
||||
result.push(i);
|
||||
if **tokens.peek().expect("Unexpected EOF in argument list") == Token::Comma{
|
||||
consume(tokens, Token::Comma);
|
||||
match tokens.peek().expect("Unexpected EOF in argument list") {
|
||||
Token::Identifier(_) => {},
|
||||
_ => panic!("Unexpected symbol after Comma in argument list"),
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
result
|
||||
}
|
||||
//
|
||||
// fn protocol_declaration(tokens : &mut Peekable<Iter<'_, Token>>) -> Declaration {
|
||||
// consume(tokens, Token::Protocol);
|
||||
// let name = identifier(tokens).expect("Expected Identifier after `protocol`");
|
||||
// consume(tokens, Token::LBrace);
|
||||
// let mut interface = Vec::new();
|
||||
// match tokens.peek().expect("Unexpected EOF after LBrace") {
|
||||
// Token::RBrace => {},
|
||||
// _ => {
|
||||
// functions(tokens, &mut interface);
|
||||
// },
|
||||
// };
|
||||
// Declaration::ProtocolDeclaration(ProtocolDeclaration{name, interface})
|
||||
// }
|
||||
//
|
||||
// fn functions(tokens : &mut Peekable<Iter<'_, Token>>, interface : &mut Vec<FuncDeclaration>) {
|
||||
// loop {
|
||||
// match function(tokens) {
|
||||
// Some(x) => interface.push(x),
|
||||
// None => break,
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// fn function(tokens : &mut Peekable<Iter<'_, Token>>) -> Option<FuncDeclaration>{
|
||||
// if let Some(Token::Fn) = tokens.peek() {
|
||||
// consume(tokens, Token::Fn);
|
||||
// let name = identifier(tokens).expect("Expected Identifier after `fn`");
|
||||
// consume(tokens, Token::LParen);
|
||||
// let arg_list = arg_list(tokens);
|
||||
// consume(tokens, Token::RParen);
|
||||
// consume(tokens, Token::RArrow((1,1)));
|
||||
// let return_type = identifier(tokens).expect("Expected return type after `->");
|
||||
// Some(FuncDeclaration{name, arg_list, return_type})
|
||||
// } else {
|
||||
// None
|
||||
// }
|
||||
// }
|
||||
//
|
||||
// fn arg_list(tokens : &mut Peekable<Iter<'_, Token>>) -> Vec<String> {
|
||||
// let mut result = Vec::new();
|
||||
// loop {
|
||||
// match identifier(tokens) {
|
||||
// None => break,
|
||||
// Some(i) =>{
|
||||
// result.push(i);
|
||||
// if **tokens.peek().expect("Unexpected EOF in argument list") == Token::Comma{
|
||||
// consume(tokens, Token::Comma);
|
||||
// match tokens.peek().expect("Unexpected EOF in argument list") {
|
||||
// Token::Identifier(_) => {},
|
||||
// _ => panic!("Unexpected symbol after Comma in argument list"),
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// }
|
||||
// result
|
||||
// }
|
||||
|
|
|
|||
Loading…
Reference in a new issue