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using results instead panic

This commit is contained in:
Sven Vogel 2022-11-23 21:28:13 +01:00
parent f262a5d92b
commit d3f121640a
5 changed files with 864 additions and 457 deletions
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20
src/main.rs
View File

@ -1,4 +1,3 @@
// tokenizer
mod token;
// ro parse a queue of tokens into functions with expressions
@ -7,18 +6,19 @@ mod parser;
// designed for a virtual stack machiene
mod inter;
use token::*;
use parser::*;
use colored::Colorize;
use parser::*;
use token::*;
pub fn message(typ: MessageType, msg: String) {
println!("{}: {}", typ.to_colored(), msg.bold().bright_white());
pub fn message<S>(typ: MessageType, msg: S)
where
S: Into<String>,
{
println!("{}: {}", typ.to_colored(), msg.into().bold().bright_white());
}
fn main() {
let source =
r"
let source = r"
# this is pi
pi = rat 5.1415926535
@ -50,5 +50,7 @@ main() = int {
}
";
parse(&mut tokenize(source), source);
let diagnostics = parse(&mut tokenize(source), source);
println!("{}", diagnostics);
}

80
src/parser/data.rs
View File

@ -1,14 +1,74 @@
use core::panic;
use std::collections::{VecDeque};
use crate::token::{Token, DebugErr};
use crate::token::{DebugInfo, DebugNotice, Token};
use crate::Prim;
use core::panic;
use std::collections::VecDeque;
pub struct Diagnostics<'a> {
/// terminating factor on error
err: Option<DebugErr<'a>>,
err: Option<DebugNotice<'a>>,
/// additional warning and informations
/// all non critical
hints: Vec<DebugErr<'a>>
hints: Vec<DebugNotice<'a>>,
/// source string
source: &'a str,
}
impl<'a> Diagnostics<'a> {
pub fn new(source: &'a str) -> Self {
Self {
err: None,
hints: vec![],
source,
}
}
pub fn set_err<T, S>(&mut self, source: &S, message: &'static crate::token::DebugMsg, ext: T)
where
T: Into<String>,
S: Into<DebugInfo> + Clone,
{
if self.err.is_some() {
panic!("Error already set");
}
let info: DebugInfo = source.clone().into();
self.err = Some(DebugNotice {
info,
msg: message,
ext: ext.into(),
source: self.source,
});
}
pub fn hint<T, S>(&mut self, source: &S, message: &'static crate::token::DebugMsg, ext: T)
where
T: Into<String>,
S: Into<DebugInfo> + Clone,
{
let info: DebugInfo = source.clone().into();
self.hints.push(DebugNotice {
info,
msg: message,
ext: ext.into(),
source: self.source,
});
}
}
impl<'a> std::fmt::Display for Diagnostics<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
for hint in self.hints.iter() {
f.write_fmt(format_args!("{}\n\n", hint)).unwrap();
}
if let Some(err) = self.err.as_ref() {
f.write_fmt(format_args!("{}\n\n", err)).unwrap();
}
Ok(())
}
}
#[derive(Debug)]
@ -37,7 +97,7 @@ pub struct Declr<'a> {
/// if the function returns a single value
pub results: bool,
/// type of result
pub result_typ: Option<Prim>
pub result_typ: Option<Prim>,
}
impl<'a> Declr<'a> {
@ -46,7 +106,7 @@ impl<'a> Declr<'a> {
name: None,
args: None,
results: false,
result_typ: None
result_typ: None,
}
}
}
@ -85,7 +145,7 @@ pub enum Expr<'a> {
/// group of more expressions
Block(Block<'a>),
/// single term
Term(VecDeque<Token<'a>>)
Term(VecDeque<Token<'a>>),
}
pub struct Scope<'a> {
@ -97,7 +157,7 @@ pub struct Scope<'a> {
pub yields: bool,
/// if the last expr yielded a result
pub expr_yield: bool,
pub cond_count: usize
pub cond_count: usize,
}
impl<'a> Scope<'a> {
@ -171,7 +231,7 @@ impl<'a> Scope<'a> {
func_return_typ: None,
expr_yield: false,
yields: false,
cond_count: 0
cond_count: 0,
}
}
}

479
src/parser/mod.rs
View File

@ -1,6 +1,6 @@
use core::{panic};
use std::{collections::{VecDeque}, vec};
use crate::token::{Token, Operator, Assoc, Prim, MessageType, Keyword};
use crate::token::{Assoc, DebugInfo, Keyword, Operator, Prim, Token};
use core::panic;
use std::{collections::VecDeque, vec};
pub mod data;
pub mod msg;
@ -8,7 +8,10 @@ pub mod msg;
use data::*;
/// simple brace-counting parser to detect functions
fn discover_functions<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &str) -> (Vec<Func<'a>>, Vec<Declr<'a>>) {
fn discover_functions<'a>(
tokens: &mut VecDeque<crate::Token<'a>>,
diagnostics: &mut data::Diagnostics,
) -> Result<(Vec<Func<'a>>, Vec<Declr<'a>>), ()> {
let mut funcs = Vec::new();
let mut declrs = Vec::new();
@ -23,15 +26,19 @@ fn discover_functions<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &str)
let mut single_line = false;
macro_rules! finish_func {
($dbginf:expr) => {
($token:expr) => {
if declrs.contains(&declr) {
println!("{}", $dbginf.make_msg_w_ext(crate::msg::ERR10, format!("Multiple definitions: {declr}")));
panic!()
diagnostics.set_err(
$token,
crate::msg::ERR10,
format!("Multiple definitions: {declr}"),
);
return Err(());
}
if declr.results && declr.result_typ.is_none() {
println!("{}", $dbginf.make_msg_w_ext(crate::msg::ERR11, format!("for function {declr}")));
panic!();
diagnostics.set_err($token, crate::msg::ERR11, format!("for function {declr}"));
return Err(());
}
funcs.push(func);
@ -43,7 +50,6 @@ fn discover_functions<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &str)
}
while let Some(top) = tokens.pop_front() {
// function body detection
// has highest priority
match &top {
@ -54,102 +60,107 @@ fn discover_functions<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &str)
// we have an found open function body
if brace_cnt == 1 {
if declr.name.is_none() {
println!("{}", dbginf.make_msg(crate::msg::ERR12));
panic!();
diagnostics.set_err(&top, crate::msg::ERR12, "");
return Err(());
}
if paren_cnt > 0 {
println!("{}", dbginf.make_msg(crate::msg::ERR13));
panic!();
diagnostics.set_err(&top, crate::msg::ERR13, "");
return Err(());
}
single_line = false;
func.raw = Some(VecDeque::new());
continue;
}
},
}
'}' => {
brace_cnt -= 1;
// we closed one to much
if brace_cnt < 0 {
println!("{}", dbginf.make_msg(crate::msg::ERR14));
panic!();
diagnostics.set_err(&top, crate::msg::ERR14, "");
return Err(());
}
// end of function body
if brace_cnt == 0 {
finish_func!(dbginf);
finish_func!(&top);
continue;
}
}
_ => ()
}
_ => (),
},
Token::Type(typ, dbginf) => if declr.result_typ.is_none() {
Token::Type(typ, dbginf) => {
if declr.result_typ.is_none() {
if declr.results {
declr.result_typ = Some(*typ);
continue;
} else {
println!("{}", dbginf.make_msg(crate::msg::ERR16));
panic!();
diagnostics.set_err(&top, crate::msg::ERR16, "");
return Err(());
}
}
}
},
Token::LineBreak(dbginf) => if single_line {
finish_func!(dbginf);
Token::LineBreak(dbginf) => {
if single_line {
finish_func!(&top);
continue;
}
}
_ => if single_line && func.raw.is_none() {
_ => {
if single_line && func.raw.is_none() {
func.raw = Some(VecDeque::new());
}
}
}
if func.raw.is_none() {
match &top {
Token::Operator(op, dbginf) => match op {
Operator::Assign => {
if declr.results {
println!("{}", dbginf.make_msg(crate::msg::ERR17));
panic!();
diagnostics.set_err(&top, crate::msg::ERR17, "");
return Err(());
}
if declr.name.is_none() {
println!("{}", dbginf.make_msg(crate::msg::ERR12));
panic!();
diagnostics.set_err(&top, crate::msg::ERR12, "");
return Err(());
}
declr.results = true;
single_line = true;
continue;
}
_ => ()
}
_ => (),
},
Token::Word(text, dbginf) => {
if declr.name.is_some() {
if declr.args.is_none() {
println!("{}", dbginf.make_msg(crate::msg::ERR18));
panic!();
diagnostics.set_err(&top, crate::msg::ERR18, "");
return Err(());
}
} else if brace_cnt > 0 {
println!("{}", dbginf.make_msg(crate::msg::ERR13));
panic!();
diagnostics.set_err(&top, crate::msg::ERR13, "");
return Err(());
} else {
declr.name = Some(text);
continue;
}
},
}
Token::Assign(name, _, dbginf) => {
if declr.results {
println!("{}", dbginf.make_msg(crate::msg::ERR17));
panic!();
diagnostics.set_err(&top, crate::msg::ERR17, "");
return Err(());
}
if declr.name.is_some() {
println!("{}", dbginf.make_msg(crate::msg::ERR18));
panic!();
diagnostics.set_err(&top, crate::msg::ERR18, "");
return Err(());
}
func.raw = Some(VecDeque::new());
@ -160,52 +171,50 @@ fn discover_functions<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &str)
}
Token::Delemiter(char, dbginf) => match char {
'(' => if func.raw.is_none() {
'(' => {
if func.raw.is_none() {
paren_cnt += 1;
if paren_cnt == 1 {
if declr.args.is_some() {
println!("{}", dbginf.make_msg(crate::msg::ERR19));
panic!();
diagnostics.set_err(&top, crate::msg::ERR19, "");
return Err(());
}
declr.args = Some(Vec::new());
continue;
}
},
}
}
')' => {
paren_cnt -= 1;
if paren_cnt == 0 {
continue;
}
}
_ => ()
}
_ => ()
_ => (),
},
_ => (),
}
}
if let Some(body) = &mut func.raw {
body.push_back(top);
continue;
}
else if let Some(args) = &mut declr.args {
} else if let Some(args) = &mut declr.args {
if paren_cnt == 0 {
println!("{}", top.create_msg(crate::msg::ERR20));
panic!();
diagnostics.set_err(&top, crate::msg::ERR20, "");
return Err(());
}
match &top {
Token::Decl(name, typ, _dbginf) => args.push((name, *typ)),
Token::Word(_, dbginf) => {
println!("{}", dbginf.make_msg(crate::msg::ERR21));
panic!()
},
diagnostics.set_err(&top, crate::msg::ERR21, "");
return Err(());
}
_ => {
println!("{}", top.create_msg(crate::msg::ERR23));
panic!()
diagnostics.set_err(&top, crate::msg::ERR23, "");
return Err(());
}
}
continue;
@ -215,79 +224,94 @@ fn discover_functions<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &str)
match &top {
Token::LineBreak(_) | Token::Terminator(_) => (), // valid whitespace
_ => {
println!("{}", top.create_msg(crate::msg::ERR22));
panic!()
diagnostics.set_err(&top, crate::msg::ERR22, "");
return Err(());
}
}
}
if let Some(raw) = func.raw {
if let Some(front) = raw.front() {
println!("{}", front.create_msg(crate::msg::ERR15));
panic!();
diagnostics.set_err(front, crate::msg::ERR15, "");
return Err(());
}
}
(funcs, declrs)
Ok((funcs, declrs))
}
/// parse the functions raw content to expr for easy compilation using a brace-counter.
/// - ```{...}``` surround a block
/// - line breaks seperate expressions
fn discover_exprs<'a>(functions: &mut Vec<Func<'a>>, _: &Vec<Declr<'a>>, source: &'a str) {
fn discover_exprs<'a>(
functions: &mut Vec<Func<'a>>,
_: &Vec<Declr<'a>>,
diagnostics: &mut data::Diagnostics,
) {
for func in functions.iter_mut() {
let mut blocks = vec![Block::new()];
let mut expr = VecDeque::new();
while let Some(top) = func.raw.as_mut().unwrap().pop_front() {
match &top {
Token::LineBreak(dbginf) | Token::Terminator(dbginf) => if !expr.is_empty() {
blocks.last_mut().unwrap_or_else(|| {
println!("{}", dbginf.make_msg(crate::msg::ERR41));
panic!()
}).push_back(Expr::Term(expr));
Token::LineBreak(dbginf) | Token::Terminator(dbginf) => {
if !expr.is_empty() {
if let Some(blocks) = blocks.last_mut() {
blocks.push_back(Expr::Term(expr))
} else {
diagnostics.set_err(&top, crate::msg::ERR41, "");
return;
}
expr = VecDeque::new();
continue;
}
}
Token::Delemiter(char, dbginf) => match char {
'{' => {
blocks.last_mut().unwrap_or_else(|| {
println!("{}", dbginf.make_msg(crate::msg::ERR41));
blocks
.last_mut()
.unwrap_or_else(|| {
diagnostics.set_err(&top, crate::msg::ERR41, "");
panic!()
}).push_back(Expr::Term(expr));
})
.push_back(Expr::Term(expr));
expr = VecDeque::new();
blocks.push(Block::new());
continue;
},
}
'}' => {
// pop topmost block of the stack, storing it in the next lower block
if let Some(block) = blocks.pop() {
blocks.last_mut().unwrap_or_else(|| {
println!("{}", dbginf.make_msg(crate::msg::ERR41));
blocks
.last_mut()
.unwrap_or_else(|| {
//println!("{}", dbginf.make_msg(crate::msg::ERR41));
panic!()
}).push_back(Expr::Block(block));
})
.push_back(Expr::Block(block));
} else {
println!("{}", dbginf.make_msg(crate::msg::ERR40));
//println!("{}", dbginf.make_msg(crate::msg::ERR40));
panic!()
}
continue;
}
_ => (),
},
_ => ()
},
_ => ()
_ => (),
}
expr.push_back(top)
}
if !expr.is_empty() {
blocks.last_mut().unwrap_or_else(|| {
println!("{}", expr.back().unwrap().create_msg(crate::msg::ERR40));
blocks
.last_mut()
.unwrap_or_else(|| {
diagnostics.set_err(expr.back().unwrap(), crate::msg::ERR40, "");
panic!()
}).push_back(Expr::Term(expr));
})
.push_back(Expr::Term(expr));
}
if let Some(block) = blocks.pop() {
@ -298,103 +322,150 @@ fn discover_exprs<'a>(functions: &mut Vec<Func<'a>>, _: &Vec<Declr<'a>>, source:
}
}
fn check_var_typ(typ: &mut Option<Prim>, operands: &mut Vec<Prim>, dbginf: &crate::token::DebugInfo, source: &str) {
fn check_var_typ(
typ: &mut Option<Prim>,
operands: &mut Vec<Prim>,
info: &crate::token::DebugInfo,
diagnostics: &mut data::Diagnostics,
) -> Result<(), ()> {
if let Some(value) = operands.pop() {
if !operands.is_empty() {
println!("{}", dbginf.make_msg(crate::msg::ERR50));
panic!();
diagnostics.set_err(info, crate::msg::ERR50, "");
return Err(());
}
if let Some(typ) = typ {
if !typ.is_equal(value) {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR51, format!("needed {:?} got {:?}", typ, value) ));
panic!();
diagnostics.set_err(
info,
crate::msg::ERR51,
format!("needed {:?} got {:?}", typ, value),
);
return Err(());
}
} else {
// assign a type to untyped variable
println!("{}", dbginf.make_msg_w_ext(crate::msg::INF51, format!("gessed type: {:?}", value) ));
diagnostics.hint(info, crate::msg::INF51, format!("gessed type: {:?}", value));
*typ = Some(value);
}
} else {
println!("{}", dbginf.make_msg(crate::msg::ERR52));
panic!();
diagnostics.set_err(info, crate::msg::ERR52, "");
return Err(());
}
Ok(())
}
fn process_keyword(keyword: Keyword, _: &Vec<Declr>, scope: &mut Scope, operands: &mut Vec<Prim>, dbginf: &crate::token::DebugInfo, source: &str) {
fn process_keyword(
info: &DebugInfo,
keyword: Keyword,
scope: &mut Scope,
operands: &mut Vec<Prim>,
diagnostics: &mut data::Diagnostics,
) -> Result<(), ()> {
match keyword {
Keyword::If | Keyword::While => {
if operands.len() != 1 {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR53, format!("got {:?} values", operands.len()) ));
panic!();
diagnostics.set_err(
info,
crate::msg::ERR53,
format!("got {:?} values", operands.len()),
);
return Err(());
}
if let Some(operand) = operands.pop() {
match operand {
Prim::Bool => (),
_ => {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR53, format!("got {:?}", operand) ));
panic!();
diagnostics.set_err(info, crate::msg::ERR53, format!("got {:?}", operand));
return Err(());
}
}
}
}
},
Keyword::Return => {
if scope.func_return_typ.is_some() {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR54, "perhaps use `yield`" ));
panic!();
diagnostics.set_err(info, crate::msg::ERR54, "perhaps use `yield`");
return Err(());
}
}
Keyword::Yield => {
if operands.len() != 1 {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR55, format!("got {:?} instead of 1", operands.len()) ));
panic!();
diagnostics.set_err(
info,
crate::msg::ERR55,
format!("got {:?} instead of 1", operands.len()),
);
return Err(());
}
if let Some(operand) = operands.pop() {
if let Some(typ) = scope.func_return_typ {
if typ != operand {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR59, format!("expected {:?} got {:?}", typ, operand) ));
panic!();
diagnostics.set_err(
info,
crate::msg::ERR59,
format!("expected {:?} got {:?}", typ, operand),
);
return Err(());
}
println!("{}", scope.cond_count);
scope.yields = scope.cond_count == 1;
} else {
println!("{}", dbginf.make_msg(crate::msg::ERR57));
panic!();
diagnostics.set_err(info, crate::msg::ERR57, "");
return Err(());
}
} else {
println!("{}", dbginf.make_msg(crate::msg::ERR58));
panic!();
diagnostics.set_err(info, crate::msg::ERR58, "");
return Err(());
}
}
_ => ()
}
_ => (),
}
fn collapse_operation(operation: &mut Token, declrs: &Vec<Declr>, scope: &mut Scope, operands: &mut Vec<Prim>, source: &str) {
Ok(())
}
fn collapse_operation(
operation: &mut Token,
declrs: &Vec<Declr>,
scope: &mut Scope,
operands: &mut Vec<Prim>,
diagnostics: &mut data::Diagnostics,
) -> Result<(), ()> {
match operation {
Token::Operator(op, dbginf) => op.operate(operands, &dbginf, source),
Token::Operator(op, dbginf) => op.operate(operands, &dbginf, diagnostics),
Token::Assign(name, mut typ, dbginf) => {
check_var_typ(&mut typ, operands, &dbginf, source);
check_var_typ(&mut typ, operands, &dbginf, diagnostics)?;
scope.decl_var((*name).to_owned(), typ);
},
Token::Func(name, dbginf) => call_func(name, declrs, scope, operands, &dbginf, source),
Token::Keyword(keyword, dbginf) => process_keyword(*keyword, declrs, scope, operands, &dbginf, source),
_ => ()
}
Token::Func(name, dbginf) => call_func(name, declrs, scope, operands, &dbginf, diagnostics),
Token::Keyword(keyword, dbginf) => {
process_keyword(dbginf, *keyword, scope, operands, diagnostics)?
}
_ => (),
}
Ok(())
}
fn call_func(name: &str, declrs: &Vec<Declr>, _: &mut Scope, operands: &mut Vec<Prim>, dbginf: &crate::token::DebugInfo, source: &str) {
fn call_func(
name: &str,
declrs: &Vec<Declr>,
_: &mut Scope,
operands: &mut Vec<Prim>,
dbginf: &crate::token::DebugInfo,
diagnostics: &mut data::Diagnostics,
) {
for declr in declrs {
if declr.name.is_some() && declr.name.unwrap() == name {
if let Some(args) = &declr.args {
if args.len() > operands.len() {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR60, format!("expected {:?} got {:?}", args.len(), operands.len()) ));
/*
println!(
"{}",
dbginf.make_msg_w_ext(
crate::msg::ERR60,
format!("expected {:?} got {:?}", args.len(), operands.len())
)
);*/
panic!()
}
@ -402,7 +473,14 @@ fn call_func(name: &str, declrs: &Vec<Declr>, _: &mut Scope, operands: &mut Vec<
let operand = operands.first().unwrap();
if !operand.is_equal(arg.1) {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR61, format!("expected {:?} got {:?}", arg, operand) ));
/*
println!(
"{}",
dbginf.make_msg_w_ext(
crate::msg::ERR61,
format!("expected {:?} got {:?}", arg, operand)
)
);*/
panic!()
}
@ -414,19 +492,23 @@ fn call_func(name: &str, declrs: &Vec<Declr>, _: &mut Scope, operands: &mut Vec<
operands.push(typ);
}
break
break;
}
}
}
/// parse a single term using a modified shunting yard
fn parse_term<'a>(term: &mut VecDeque<Token<'a>>, declrs: &Vec<Declr<'a>>, scope: &mut Scope, source: & str) {
fn parse_term<'a>(
term: &mut VecDeque<Token<'a>>,
declrs: &Vec<Declr<'a>>,
scope: &mut Scope,
diagnostics: &mut data::Diagnostics,
) {
let mut op_stack = vec![];
let mut output = VecDeque::with_capacity(term.len());
let mut value_stack = vec![];
'outer:
while let Some(token) = term.pop_front() {
'outer: while let Some(token) = term.pop_front() {
match &token {
Token::Word(text, dbginf) => {
if is_func(declrs, text) {
@ -441,56 +523,68 @@ fn parse_term<'a>(term: &mut VecDeque<Token<'a>>, declrs: &Vec<Declr<'a>>, scope
output.push_back(Token::Var(text, *dbginf));
continue;
}
println!("{}", dbginf.make_msg(crate::msg::ERR62));
//println!("{}", dbginf.make_msg(crate::msg::ERR62));
panic!()
}
Token::Bool(_, _) => {
output.push_back(token);
value_stack.push(Prim::Bool)
},
}
Token::Number(_, hint, _) => {
output.push_back(token.clone());
value_stack.push(Prim::UntypedNum(*hint))
},
value_stack.push(Prim::Num(*hint))
}
Token::Assign(_, _, _) => {
op_stack.push(token);
},
}
Token::Keyword(_, _) => op_stack.push(token),
Token::Delemiter(char, dbginf) => {
match char {
Token::Delemiter(char, dbginf) => match char {
'(' => op_stack.push(token),
')' => {
while let Some(mut token) = op_stack.pop() {
match &token {
Token::Delemiter(char, _) => if *char == '(' {
Token::Delemiter(char, _) => {
if *char == '(' {
if let Some(next) = op_stack.last() {
match &next {
Token::Func(_, _) => {
let mut token = op_stack.pop().unwrap();
collapse_operation(&mut token, declrs, scope, &mut value_stack, source);
collapse_operation(
&mut token,
declrs,
scope,
&mut value_stack,
diagnostics,
);
output.push_back(token);
},
_ => ()
}
_ => (),
}
}
continue 'outer;
},
}
}
_ => {
collapse_operation(&mut token, declrs, scope, &mut value_stack, source);
collapse_operation(
&mut token,
declrs,
scope,
&mut value_stack,
diagnostics,
);
output.push_back(token)
}
}
}
println!("{}", dbginf.make_msg(crate::msg::ERR64));
//println!("{}", dbginf.make_msg(crate::msg::ERR64));
panic!();
},
}
_ => {
println!("{}", dbginf.make_msg(crate::msg::ERR65));
//println!("{}", dbginf.make_msg(crate::msg::ERR65));
panic!()
}
}
}
},
Token::Operator(op, _) => {
let prec0 = op.prec();
@ -500,43 +594,59 @@ fn parse_term<'a>(term: &mut VecDeque<Token<'a>>, declrs: &Vec<Declr<'a>>, scope
let prec1 = op1.prec();
if prec1 > prec0 || prec0 == prec1 && op.assoc() == Assoc::Left {
collapse_operation(&mut top, declrs, scope, &mut value_stack, source);
collapse_operation(
&mut top,
declrs,
scope,
&mut value_stack,
diagnostics,
);
output.push_back(op_stack.pop().unwrap());
continue
continue;
}
break
},
_ => break
break;
}
_ => break,
}
}
op_stack.push(token);
}
_ => ()
_ => (),
}
}
while let Some(mut token) = op_stack.pop() {
match &token {
Token::Delemiter(char, dbginf) => if *char == '(' {
println!("{}", dbginf.make_msg(crate::msg::ERR63));
},
Token::Delemiter(char, dbginf) => {
if *char == '(' {
//println!("{}", dbginf.make_msg(crate::msg::ERR63));
}
}
_ => {
collapse_operation(&mut token, declrs, scope, &mut value_stack, source);
collapse_operation(&mut token, declrs, scope, &mut value_stack, diagnostics);
output.push_back(token)
}
}
}
if value_stack.len() > 1 {
println!("{}", output[0].create_msg(crate::msg::ERR50));
panic!();
diagnostics.set_err(&output[0], crate::msg::ERR50, "");
return;
}
scope.expr_yield = value_stack.len() == 1;
if scope.expr_yield {
let yielded = value_stack.pop().unwrap();
if !yielded.is_equal(scope.func_return_typ.unwrap()) {
println!("{}", output[0].create_msg_w_ext(crate::msg::ERR59, format!("expected: {:?} got {:?}", scope.func_return_typ.unwrap(), yielded) ));
diagnostics.set_err(
&output[0],
crate::msg::ERR59,
format!(
"expected {:?} got {:?}",
scope.func_return_typ.unwrap(),
yielded
),
);
panic!();
}
}
@ -553,20 +663,29 @@ fn is_func(declrs: &[Declr], text: &str) -> bool {
return false;
}
fn parse_block<'a>(block: &mut Block<'a>, declrs: &Vec<Declr<'a>>, scope: &mut Scope, source: &str) {
fn parse_block<'a>(
block: &mut Block<'a>,
declrs: &Vec<Declr<'a>>,
scope: &mut Scope,
diagnostics: &mut data::Diagnostics,
) {
scope.cond_count += 1;
scope.alloc_scope();
for expr in block.iter_mut() {
match expr {
Expr::Block(block) => parse_block(block, declrs, scope, source),
Expr::Term(term) => parse_term(term, declrs, scope, source)
Expr::Block(block) => parse_block(block, declrs, scope, diagnostics),
Expr::Term(term) => parse_term(term, declrs, scope, diagnostics),
}
}
scope.pop_scope();
scope.cond_count -= 1;
}
fn parse_exprs<'a>(funcs: &mut Vec<Func<'a>>, declrs: &Vec<Declr<'a>>, source: &'a str) {
fn parse_exprs<'a>(
funcs: &mut Vec<Func<'a>>,
declrs: &Vec<Declr<'a>>,
diagnostics: &mut data::Diagnostics,
) {
let mut scope = Scope::new();
for (x, func) in funcs.iter_mut().enumerate() {
@ -577,14 +696,14 @@ fn parse_exprs<'a>(funcs: &mut Vec<Func<'a>>, declrs: &Vec<Declr<'a>>, source: &
scope.yields = false;
scope.cond_count = 0;
parse_block(block, declrs, &mut scope, source);
parse_block(block, declrs, &mut scope, diagnostics);
if scope.func_return_typ.is_some() && !scope.yields && !scope.expr_yield {
//token.create_msg_w_ext(crate::msg::ERR56, format!("at function {}", declrs[x]));
panic!();
}
},
_ => panic!("Fatal-Compilier-Error: function must have a block")
}
_ => panic!("Fatal-Compilier-Error: function must have a block"),
}
}
}
@ -592,14 +711,16 @@ fn parse_exprs<'a>(funcs: &mut Vec<Func<'a>>, declrs: &Vec<Declr<'a>>, source: &
/// reorder and organize a listing of instructions to a RPN based format:
/// any program is made out of functions.
/// A function has a name followed by an optional parameter list, followed by an optional equal sign and block.
pub fn parse<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &'a str) -> Vec<Func<'a>> {
let (mut funcs, declrs) = discover_functions(tokens, source);
pub fn parse<'a>(tokens: &mut VecDeque<crate::Token<'a>>, source: &'a str) -> Diagnostics<'a> {
let mut dias = data::Diagnostics::new(source);
if let Ok((mut funcs, declrs)) = discover_functions(tokens, &mut dias) {
// make all of this shit return a mutable diagnostics struct.
discover_exprs(&mut funcs, &declrs, source);
parse_exprs(&mut funcs, &declrs, source);
discover_exprs(&mut funcs, &declrs, &mut dias);
parse_exprs(&mut funcs, &declrs, &mut dias);
crate::inter::convert_to_erpn(&mut funcs, &declrs);
funcs
}
dias
}

232
src/parser/msg.rs
View File

@ -1,50 +1,200 @@
use crate::token::DebugMsg;
use crate::token::MessageType::Error;
use crate::token::MessageType::Warning;
use crate::token::MessageType::Info;
use crate::token::MessageType::Warning;
pub const ERR10: &DebugMsg = &DebugMsg { typ: Error, code: 10, msg: "Function defined multiple times" };
pub const ERR11: &DebugMsg = &DebugMsg { typ: Error, code: 11, msg: "Function missing return type" };
pub const ERR12: &DebugMsg = &DebugMsg { typ: Error, code: 12, msg: "Function missing name" };
pub const ERR13: &DebugMsg = &DebugMsg { typ: Error, code: 13, msg: "Open parameter list" };
pub const ERR14: &DebugMsg = &DebugMsg { typ: Error, code: 14, msg: "Closed non existant function body" };
pub const ERR15: &DebugMsg = &DebugMsg { typ: Error, code: 15, msg: "Open function body" };
pub const ERR16: &DebugMsg = &DebugMsg { typ: Error, code: 16, msg: "Missing assign for return type" };
pub const ERR17: &DebugMsg = &DebugMsg { typ: Error, code: 17, msg: "Double function assign" };
pub const ERR18: &DebugMsg = &DebugMsg { typ: Error, code: 18, msg: "Function has multiple names" };
pub const ERR19: &DebugMsg = &DebugMsg { typ: Error, code: 19, msg: "Multiple parameter lists" };
pub const ERR20: &DebugMsg = &DebugMsg { typ: Error, code: 20, msg: "not a valid parameter" };
pub const ERR21: &DebugMsg = &DebugMsg { typ: Error, code: 21, msg: "type declaration missing for parameter" };
pub const ERR22: &DebugMsg = &DebugMsg { typ: Error, code: 22, msg: "token outside of function definition" };
pub const ERR23: &DebugMsg = &DebugMsg { typ: Error, code: 23, msg: "token must be declaration" };
pub const ERR10: &DebugMsg = &DebugMsg {
typ: Error,
code: 10,
msg: "Function defined multiple times",
};
pub const ERR11: &DebugMsg = &DebugMsg {
typ: Error,
code: 11,
msg: "Function missing return type",
};
pub const ERR12: &DebugMsg = &DebugMsg {
typ: Error,
code: 12,
msg: "Function missing name",
};
pub const ERR13: &DebugMsg = &DebugMsg {
typ: Error,
code: 13,
msg: "Open parameter list",
};
pub const ERR14: &DebugMsg = &DebugMsg {
typ: Error,
code: 14,
msg: "Closed non existant function body",
};
pub const ERR15: &DebugMsg = &DebugMsg {
typ: Error,
code: 15,
msg: "Open function body",
};
pub const ERR16: &DebugMsg = &DebugMsg {
typ: Error,
code: 16,
msg: "Missing assign for return type",
};
pub const ERR17: &DebugMsg = &DebugMsg {
typ: Error,
code: 17,
msg: "Double function assign",
};
pub const ERR18: &DebugMsg = &DebugMsg {
typ: Error,
code: 18,
msg: "Function has multiple names",
};
pub const ERR19: &DebugMsg = &DebugMsg {
typ: Error,
code: 19,
msg: "Multiple parameter lists",
};
pub const ERR20: &DebugMsg = &DebugMsg {
typ: Error,
code: 20,
msg: "not a valid parameter",
};
pub const ERR21: &DebugMsg = &DebugMsg {
typ: Error,
code: 21,
msg: "type declaration missing for parameter",
};
pub const ERR22: &DebugMsg = &DebugMsg {
typ: Error,
code: 22,
msg: "token outside of function definition",
};
pub const ERR23: &DebugMsg = &DebugMsg {
typ: Error,
code: 23,
msg: "token must be declaration",
};
pub const ERR40: &DebugMsg = &DebugMsg { typ: Error, code: 40, msg: "Open block" };
pub const ERR41: &DebugMsg = &DebugMsg { typ: Error, code: 41, msg: "Closed non existant block" };
pub const ERR40: &DebugMsg = &DebugMsg {
typ: Error,
code: 40,
msg: "Open block",
};
pub const ERR41: &DebugMsg = &DebugMsg {
typ: Error,
code: 41,
msg: "Closed non existant block",
};
pub const INF51: &DebugMsg = &DebugMsg { typ: Info, code: 51, msg: "No variable type provided" };
pub const INF51: &DebugMsg = &DebugMsg {
typ: Info,
code: 51,
msg: "No variable type provided",
};
pub const ERR50: &DebugMsg = &DebugMsg { typ: Error, code: 50, msg: "Expression has multiple values" };
pub const ERR51: &DebugMsg = &DebugMsg { typ: Error, code: 51, msg: "Missmatched variable types" };
pub const ERR52: &DebugMsg = &DebugMsg { typ: Error, code: 52, msg: "Unable to assign variable type" };
pub const ERR53: &DebugMsg = &DebugMsg { typ: Error, code: 53, msg: "Expected single boolean value" };
pub const ERR54: &DebugMsg = &DebugMsg { typ: Error, code: 54, msg: "Cannot return from function without result" };
pub const ERR55: &DebugMsg = &DebugMsg { typ: Error, code: 55, msg: "Expected single value" };
pub const ERR56: &DebugMsg = &DebugMsg { typ: Error, code: 56, msg: "Function missing return value" };
pub const ERR57: &DebugMsg = &DebugMsg { typ: Error, code: 57, msg: "Function does not return anything" };
pub const ERR58: &DebugMsg = &DebugMsg { typ: Error, code: 58, msg: "Yield must return a value" };
pub const ERR59: &DebugMsg = &DebugMsg { typ: Error, code: 59, msg: "Missmatched function return type" };
pub const ERR50: &DebugMsg = &DebugMsg {
typ: Error,
code: 50,
msg: "Expression has multiple values",
};
pub const ERR51: &DebugMsg = &DebugMsg {
typ: Error,
code: 51,
msg: "Missmatched variable types",
};
pub const ERR52: &DebugMsg = &DebugMsg {
typ: Error,
code: 52,
msg: "Unable to assign variable type",
};
pub const ERR53: &DebugMsg = &DebugMsg {
typ: Error,
code: 53,
msg: "Expected single boolean value",
};
pub const ERR54: &DebugMsg = &DebugMsg {
typ: Error,
code: 54,
msg: "Cannot return from function without result",
};
pub const ERR55: &DebugMsg = &DebugMsg {
typ: Error,
code: 55,
msg: "Expected single value",
};
pub const ERR56: &DebugMsg = &DebugMsg {
typ: Error,
code: 56,
msg: "Function missing return value",
};
pub const ERR57: &DebugMsg = &DebugMsg {
typ: Error,
code: 57,
msg: "Function does not return anything",
};
pub const ERR58: &DebugMsg = &DebugMsg {
typ: Error,
code: 58,
msg: "Yield must return a value",
};
pub const ERR59: &DebugMsg = &DebugMsg {
typ: Error,
code: 59,
msg: "Missmatched function return type",
};
pub const ERR60: &DebugMsg = &DebugMsg { typ: Error, code: 60, msg: "Missmatched parameter count" };
pub const ERR61: &DebugMsg = &DebugMsg { typ: Error, code: 61, msg: "Missmatched parameter type" };
pub const ERR62: &DebugMsg = &DebugMsg { typ: Error, code: 62, msg: "Unknown symbol" };
pub const ERR63: &DebugMsg = &DebugMsg { typ: Error, code: 63, msg: "Missing left parenthesis" };
pub const ERR64: &DebugMsg = &DebugMsg { typ: Error, code: 64, msg: "Missing right parenthesis" };
pub const ERR65: &DebugMsg = &DebugMsg { typ: Error, code: 65, msg: "Missplaced character" };
pub const ERR70: &DebugMsg = &DebugMsg { typ: Error, code: 70, msg: "Unknown type declaration"};
pub const ERR71: &DebugMsg = &DebugMsg { typ: Error, code: 71, msg: "Unable to identify characters as token"};
pub const ERR72: &DebugMsg = &DebugMsg { typ: Error, code: 72, msg: "Unknown operator"};
pub const ERR73: &DebugMsg = &DebugMsg { typ: Error, code: 73, msg: "Missmatched types for operation"};
pub const ERR74: &DebugMsg = &DebugMsg { typ: Error, code: 74, msg: "Missing operands"};
pub const ERR60: &DebugMsg = &DebugMsg {
typ: Error,
code: 60,
msg: "Missmatched parameter count",
};
pub const ERR61: &DebugMsg = &DebugMsg {
typ: Error,
code: 61,
msg: "Missmatched parameter type",
};
pub const ERR62: &DebugMsg = &DebugMsg {
typ: Error,
code: 62,
msg: "Unknown symbol",
};
pub const ERR63: &DebugMsg = &DebugMsg {
typ: Error,
code: 63,
msg: "Missing left parenthesis",
};
pub const ERR64: &DebugMsg = &DebugMsg {
typ: Error,
code: 64,
msg: "Missing right parenthesis",
};
pub const ERR65: &DebugMsg = &DebugMsg {
typ: Error,
code: 65,
msg: "Missplaced character",
};
pub const ERR70: &DebugMsg = &DebugMsg {
typ: Error,
code: 70,
msg: "Unknown type declaration",
};
pub const ERR71: &DebugMsg = &DebugMsg {
typ: Error,
code: 71,
msg: "Unable to identify characters as token",
};
pub const ERR72: &DebugMsg = &DebugMsg {
typ: Error,
code: 72,
msg: "Unknown operator",
};
pub const ERR73: &DebugMsg = &DebugMsg {
typ: Error,
code: 73,
msg: "Missmatched types for operation",
};
pub const ERR74: &DebugMsg = &DebugMsg {
typ: Error,
code: 74,
msg: "Missing operands",
};

398
src/token/mod.rs
View File

@ -1,12 +1,14 @@
use colored::{ColoredString, Colorize};
use std::collections::VecDeque;
use colored::{Colorize, ColoredString};
#[derive(Debug, Hash, PartialEq, Eq, Copy, Clone)]
pub enum Operator {
// bitwise boolean operations
Or,
And,
Xor,
// comparisons
Eq,
Lt,
Gt,
@ -14,20 +16,48 @@ pub enum Operator {
LtEq,
NotEq,
// arithmetic
Add,
Sub,
Mul,
Div,
Assign
Assign,
}
#[derive(Debug, Copy, Clone, PartialEq, Eq)]
pub enum Assoc {
Right,
Left
Left,
}
const ARITHMETIC_TYPES: &'static [(&[Prim], Prim)] = &[
(&[Prim::Int, Prim::Int], Prim::Int),
(&[Prim::Rat, Prim::Rat], Prim::Rat),
(&[Prim::Num(NumHint::Int), Prim::Int], Prim::Int),
(&[Prim::Num(NumHint::Int), Prim::Rat], Prim::Rat),
(&[Prim::Num(NumHint::Rat), Prim::Rat], Prim::Rat),
(&[Prim::Int, Prim::Num(NumHint::Int)], Prim::Int),
(&[Prim::Rat, Prim::Num(NumHint::Rat)], Prim::Rat),
(&[Prim::Rat, Prim::Num(NumHint::Int)], Prim::Rat),
(
&[Prim::Num(NumHint::Rat), Prim::Num(NumHint::Rat)],
Prim::Rat,
),
(
&[Prim::Num(NumHint::Int), Prim::Num(NumHint::Rat)],
Prim::Rat,
),
(
&[Prim::Num(NumHint::Rat), Prim::Num(NumHint::Int)],
Prim::Rat,
),
(
&[Prim::Num(NumHint::Int), Prim::Num(NumHint::Int)],
Prim::Int,
),
];
impl Operator {
pub fn parse<'a>(str: &'a str) -> Self {
return match str {
@ -48,7 +78,10 @@ impl Operator {
"/" => Operator::Div,
"=" => Operator::Assign,
_ => panic!("Unspecified operator")
_ => {
crate::message(MessageType::Critical, "Unknown operator");
panic!();
}
};
}
@ -57,6 +90,7 @@ impl Operator {
Operator::Eq => 2,
Operator::Lt => 2,
Operator::Gt => 2,
Operator::NotEq => 2,
Operator::LtEq => 2,
Operator::GtEq => 2,
@ -66,113 +100,152 @@ impl Operator {
Operator::Add => 3,
Operator::Sub => 3,
Operator::Mul => 4,
Operator::Div => 4,
_ => 0
}
Operator::Assign => 0,
};
}
pub fn assoc(&self) -> Assoc {
match self {
_ => Assoc::Right
_ => Assoc::Right,
}
}
fn present_types(operands: &[Prim], types: &[Prim], r#yield: Prim, dbginf: &DebugInfo, source: &str) -> Option<Prim> {
fn present_types(
operands: &[Prim],
types: &[Prim],
r#yield: Prim,
dbginf: &DebugInfo,
diagnostics: &mut crate::parser::data::Diagnostics,
) -> Option<Prim> {
if operands.len() < types.len() {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR74, format!("required {} got {}", types.len() - operands.len(), operands.len())));
/*
println!(
"{}",
dbginf.make_msg_w_ext(
crate::msg::ERR74,
format!(
"required {} got {}",
types.len() - operands.len(),
operands.len()
)
)
);*/
panic!()
}
for (x, typ) in types.iter().enumerate() {
if typ != &operands[x] {
return None
return None;
}
}
Some(r#yield)
}
fn check_types(operands: &[Prim], types: &[(Vec<Prim>, Prim)], dbginf: &DebugInfo, source: &str) -> Option<Prim> {
fn check_types(
operands: &[Prim],
types: &[(&[Prim], Prim)],
dbginf: &DebugInfo,
diagnostics: &mut crate::parser::data::Diagnostics,
) -> Option<Prim> {
for combination in types.iter() {
if let Some(result) = Self::present_types(operands, &combination.0, combination.1, dbginf, source) {
if let Some(result) =
Self::present_types(operands, combination.0, combination.1, dbginf, diagnostics)
{
return Some(result);
}
}
None
}
pub fn operate(&self, operands: &mut Vec<Prim>, dbginf: &DebugInfo, source: &str) {
pub fn operate(
&self,
operands: &mut Vec<Prim>,
dbginf: &DebugInfo,
diagnostics: &mut crate::parser::data::Diagnostics,
) {
match self {
Operator::Add | Operator::Sub | Operator::Mul | Operator::Div => {
let types_valid = Self::check_types(operands, &[
// +------------------------------------------------------------------------------------+---------------------------------+
// | Parameter list of types | result type |
// +------------------------------------------------------------------------------------+---------------------------------+
(vec![Prim::Int, Prim::Int ], Prim::Int),
(vec![Prim::Rat, Prim::Rat ], Prim::Rat),
(vec![Prim::UntypedNum(NumberClassHint::Int), Prim::Int ], Prim::Int),
(vec![Prim::UntypedNum(NumberClassHint::Int), Prim::Rat ], Prim::Rat),
(vec![Prim::UntypedNum(NumberClassHint::Rat), Prim::Rat ], Prim::Rat),
(vec![Prim::Int, Prim::UntypedNum(NumberClassHint::Int)], Prim::Int),
(vec![Prim::Rat, Prim::UntypedNum(NumberClassHint::Rat)], Prim::Rat),
(vec![Prim::Rat, Prim::UntypedNum(NumberClassHint::Int)], Prim::Rat),
(vec![Prim::UntypedNum(NumberClassHint::Rat), Prim::UntypedNum(NumberClassHint::Rat)], Prim::Rat),
(vec![Prim::UntypedNum(NumberClassHint::Int), Prim::UntypedNum(NumberClassHint::Rat)], Prim::Rat),
(vec![Prim::UntypedNum(NumberClassHint::Rat), Prim::UntypedNum(NumberClassHint::Int)], Prim::Rat),
(vec![Prim::UntypedNum(NumberClassHint::Int), Prim::UntypedNum(NumberClassHint::Int)], Prim::Int)
], dbginf, source);
let types_valid =
Self::check_types(operands, ARITHMETIC_TYPES, dbginf, diagnostics);
if let Some(result) = types_valid {
operands.pop();
operands.pop();
operands.push(result);
} else {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR73, "expected two numbers"));
/*
println!(
"{}",
dbginf.make_msg_w_ext(crate::msg::ERR73, "expected two numbers")
);*/
panic!()
}
},
}
Operator::And | Operator::Or | Operator::Xor => {
let types_valid = Self::check_types(operands, &[
(vec![Prim::Bool, Prim::Bool ], Prim::Bool),
], dbginf, source);
let types_valid = Self::check_types(
operands,
&[(&[Prim::Bool, Prim::Bool], Prim::Bool)],
dbginf,
diagnostics,
);
if let Some(result) = types_valid {
operands.pop();
operands.pop();
operands.push(result);
} else {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR73, "expected two booleans"));
/*
println!(
"{}",
dbginf.make_msg_w_ext(crate::msg::ERR73, "expected two booleans")
);*/
panic!()
}
},
Operator::Eq | Operator::NotEq | Operator::Lt | Operator::Gt | Operator::GtEq | Operator::LtEq => {
let types_valid = Self::check_types(operands, &[
// +------------------------------------------------------------------------------------+---------------------------------+
// | Parameter list of types | result type |
// +------------------------------------------------------------------------------------+---------------------------------+
(vec![Prim::Int, Prim::Int ], Prim::Bool ),
(vec![Prim::Rat, Prim::Rat ], Prim::Bool ),
(vec![Prim::UntypedNum(NumberClassHint::Int), Prim::Int ], Prim::Bool ),
(vec![Prim::UntypedNum(NumberClassHint::Rat), Prim::Rat ], Prim::Bool ),
(vec![Prim::Int, Prim::UntypedNum(NumberClassHint::Int)], Prim::Bool ),
(vec![Prim::Rat, Prim::UntypedNum(NumberClassHint::Rat)], Prim::Bool ),
(vec![Prim::UntypedNum(NumberClassHint::Rat), Prim::UntypedNum(NumberClassHint::Rat)], Prim::Bool ),
(vec![Prim::UntypedNum(NumberClassHint::Int), Prim::UntypedNum(NumberClassHint::Int)], Prim::Bool )
], dbginf, source);
}
Operator::Eq
| Operator::NotEq
| Operator::Lt
| Operator::Gt
| Operator::GtEq
| Operator::LtEq => {
let types_valid = Self::check_types(
operands,
&[
(&[Prim::Int, Prim::Int], Prim::Bool),
(&[Prim::Rat, Prim::Rat], Prim::Bool),
(&[Prim::Num(NumHint::Int), Prim::Int], Prim::Bool),
(&[Prim::Num(NumHint::Rat), Prim::Rat], Prim::Bool),
(&[Prim::Int, Prim::Num(NumHint::Int)], Prim::Bool),
(&[Prim::Rat, Prim::Num(NumHint::Rat)], Prim::Bool),
(
&[Prim::Num(NumHint::Rat), Prim::Num(NumHint::Rat)],
Prim::Bool,
),
(
&[Prim::Num(NumHint::Int), Prim::Num(NumHint::Int)],
Prim::Bool,
),
],
dbginf,
diagnostics,
);
if let Some(result) = types_valid {
operands.pop();
operands.pop();
operands.push(result);
} else {
println!("{}", dbginf.make_msg_w_ext(crate::msg::ERR73, "expected two numbers"));
/*
println!(
"{}",
dbginf.make_msg_w_ext(crate::msg::ERR73, "expected two numbers")
);*/
panic!()
}
},
}
_ => {
panic!("Unknown operator");
}
@ -204,25 +277,30 @@ impl Keyword {
"ret" => Keyword::Return,
"yield" => Keyword::Yield,
"please" => Keyword::Please,
_ => panic!("Text not a known keyword {text}")
_ => {
crate::message(
MessageType::Critical,
format!("not a known keyword: {}", text),
);
panic!()
}
};
}
}
#[derive(Debug, PartialEq, Eq, Copy, Clone, Hash)]
pub enum NumberClassHint {
pub enum NumHint {
Int,
Rat
Rat,
}
impl NumberClassHint {
pub fn from(str: &str) -> NumberClassHint {
impl NumHint {
pub fn from(str: &str) -> NumHint {
if str.parse::<i32>().is_err() {
return NumberClassHint::Rat;
return NumHint::Rat;
}
NumberClassHint::Int
NumHint::Int
}
}
@ -232,45 +310,52 @@ pub enum Prim {
Int,
Rat,
Bool,
UntypedNum(NumberClassHint)
Num(NumHint),
}
impl Prim {
fn from<'a>(text: &'a str, dbginf: &DebugInfo, source: &str) -> Prim {
fn from<'a>(text: &'a str, dbginf: &DebugInfo) -> Prim {
return match text {
"int" => Prim::Int,
"rat" => Prim::Rat,
"bool" => Prim::Bool,
_ => {
println!("{}", dbginf.make_msg(&crate::msg::ERR70));
//println!("{}", dbginf.make_msg(&crate::msg::ERR70));
panic!()
}
}
};
}
pub fn is_equal(&self, value: Prim) -> bool {
return match self {
Prim::Bool => *self == value,
Prim::Rat => return match value {
Prim::UntypedNum(NumberClassHint::Int) => true,
Prim::UntypedNum(NumberClassHint::Rat) => true,
Prim::Rat => {
return match value {
Prim::Num(NumHint::Int) => true,
Prim::Num(NumHint::Rat) => true,
_ => *self == value,
},
Prim::Int => return match value {
Prim::UntypedNum(NumberClassHint::Int) => true,
}
}
Prim::Int => {
return match value {
Prim::Num(NumHint::Int) => true,
_ => *self == value,
},
Prim::UntypedNum(NumberClassHint::Rat) => return match value {
}
}
Prim::Num(NumHint::Rat) => {
return match value {
Prim::Rat | Prim::Int => true,
_ => *self == value,
},
Prim::UntypedNum(NumberClassHint::Int) => return match value {
}
}
Prim::Num(NumHint::Int) => {
return match value {
Prim::Int => true,
_ => *self == value,
},
}
}
};
}
}
pub struct DebugMsg {
@ -279,65 +364,69 @@ pub struct DebugMsg {
pub msg: &'static str,
}
pub struct DebugErr<'a> {
info: DebugInfo<'a>,
pub struct DebugNotice<'a> {
pub info: DebugInfo,
/// generic error description
msg: &'static DebugMsg,
pub msg: &'static DebugMsg,
/// extra message which is case specific
ext: Option<String>,
pub ext: String,
pub source: &'a str,
}
impl<'a> std::fmt::Display for DebugErr<'a> {
impl<'a> std::fmt::Display for DebugNotice<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
// write header as:
// `Error (56) some syntax error message in line 5:`
f.write_fmt(format_args!("{} ({}) {} in line {}: {}\n",
f.write_fmt(format_args!(
"{} ({}) {} in line {}: {}\n",
self.msg.typ.to_colored(),
self.msg.code,
self.msg.msg.bold().bright_white(),
self.info.line,
self.ext.as_ref().unwrap_or(&String::new())
self.ext
));
// write additional information
f.write_fmt(format_args!("{}", self.info))
f.write_fmt(format_args!(
" somewhere in here:\n --> `{}`\n",
self.source
.lines()
.nth(self.info.line)
.unwrap()
.trim()
.bold()
.bright_white()
))
.unwrap();
(0..self.info.start + 6)
.into_iter()
.for_each(|_| f.write_str(" ").unwrap());
(self.info.start..self.info.end)
.into_iter()
.for_each(|_| f.write_str("^").unwrap());
Ok(())
}
}
#[derive(Debug, PartialEq, Eq, Copy, Clone)]
pub struct DebugInfo<'a> {
pub struct DebugInfo {
/// index in source string where the token begins in the current line
start: usize,
pub start: usize,
/// index in source string where the token ends in the current line
end: usize,
pub end: usize,
/// line number where the line in which the token is begins
line: usize,
source: &'a str
}
impl<'a> DebugInfo<'a> {
pub fn make_msg(&self, msg: &'static DebugMsg) -> DebugErr {
DebugErr {
info: self.clone(),
msg,
ext: None
}
}
pub fn make_msg_w_ext<T>(&self, msg: &'static DebugMsg, ext: T) -> DebugErr where T: Into<String> {
DebugErr {
info: self.clone(),
msg,
ext: Some(ext.into())
}
}
pub line: usize,
}
#[derive(Debug)]
pub enum MessageType {
/// For internal compiler critical error
Critical,
/// compile errors that won't allow for further compilation
Error,
Warning,
Info
Info,
}
impl MessageType {
@ -348,21 +437,16 @@ impl MessageType {
pub fn to_colored(&self) -> ColoredString {
let raw = format!("{:#?}", self);
return match self {
MessageType::Critical => raw.on_red().bold(),
MessageType::Error => raw.red().bold(),
MessageType::Warning => raw.yellow().bold(),
MessageType::Info => raw.blue().bold()
MessageType::Info => raw.blue().bold(),
};
}
}
impl<'a> std::fmt::Display for DebugInfo<'a> {
impl std::fmt::Display for DebugInfo {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_fmt(format_args!(" somewhere in here:\n --> `{}`\n",
self.source.lines().nth(self.line).unwrap().trim().bold().bright_white())).unwrap();
(0..self.start + 6).into_iter().for_each(|_| f.write_str(" ").unwrap());
(self.start..self.end).into_iter().for_each(|_| f.write_str("^").unwrap());
Ok(())
}
}
@ -372,27 +456,27 @@ impl<'a> std::fmt::Display for DebugInfo<'a> {
/// They give a meaning to patterns of chars allowing to interpret them.
pub enum Token<'a> {
// base tokens that can simply be split to from raw source code
Word(&'a str, DebugInfo<'a>),
Word(&'a str, DebugInfo),
/// Single symbol delemiter like ```(```,```}```
Delemiter(char, DebugInfo<'a>),
Operator(Operator, DebugInfo<'a>),
Number(&'a str, NumberClassHint, DebugInfo<'a>),
LineBreak(DebugInfo<'a>),
Func(&'a str, DebugInfo<'a>),
Delemiter(char, DebugInfo),
Operator(Operator, DebugInfo),
Number(&'a str, NumHint, DebugInfo),
LineBreak(DebugInfo),
Func(&'a str, DebugInfo),
/// Variable
Var(&'a str, DebugInfo<'a>),
Var(&'a str, DebugInfo),
/// Function argument
Arg(&'a str, DebugInfo<'a>),
Arg(&'a str, DebugInfo),
/// Variable assignment in the form of ```name = ```
Assign(&'a str, Option<Prim>, DebugInfo<'a>),
Assign(&'a str, Option<Prim>, DebugInfo),
/// Variable type declaration in the form of ```name:type```
Decl(&'a str, Prim, DebugInfo<'a>),
Bool(bool, DebugInfo<'a>),
Decl(&'a str, Prim, DebugInfo),
Bool(bool, DebugInfo),
/// Keywords like ```if```,```break```,```while```
Keyword(Keyword, DebugInfo<'a>),
Type(Prim, DebugInfo<'a>),
Keyword(Keyword, DebugInfo),
Type(Prim, DebugInfo),
/// Semicolon
Terminator(DebugInfo<'a>)
Terminator(DebugInfo),
}
impl<'a> std::fmt::Display for Token<'a> {
@ -416,8 +500,8 @@ impl<'a> std::fmt::Display for Token<'a> {
}
}
impl<'a> Token<'a> {
fn debug_info(&self) -> &DebugInfo {
impl<'a> Into<DebugInfo> for Token<'a> {
fn into(self) -> DebugInfo {
match self {
Token::Type(_, d) => d,
Token::Word(_, d) => d,
@ -435,14 +519,6 @@ impl<'a> Token<'a> {
Token::Terminator(d) => d,
}
}
pub fn create_msg(&self, msg: &'static DebugMsg) -> DebugErr {
DebugErr { info: self.debug_info().clone(), msg, ext: None }
}
pub fn create_msg_w_ext<T>(&self, msg: &'static DebugMsg, ext: T) -> DebugErr where T: Into<String> {
DebugErr { info: self.debug_info().clone(), msg, ext: Some(ext.into()) }
}
}
const TOKEN_REGEX_SRC: &'static str = r"(#.*|--.*)|(unless|while|loop|break|cont|ret|yield|please)|(int|rat|bool)|(true|false|ye|no|maybe)|([A-Za-z_]+)\s*(?::\s*([a-zA-Z0-9]+))?\s*=|([A-Za-z_]+)\s*(?::\s*([a-zA-Z0-9]+))|([A-Za-z_]+)|(\d*\.?\d+)|(!=|==|<=|<=|[&|+\-*/<>=])|([(){}])|(\n)|(;)";
@ -452,18 +528,18 @@ lazy_static::lazy_static! {
}
/// creates a vector of tokens from the specified str.
pub fn tokenize<'a>(source: &'a str) -> VecDeque<Token<'a>> {
pub fn tokenize(source: &str) -> VecDeque<Token> {
let mut tokens = VecDeque::new();
let mut line_count = 0;
let mut line_start = 0;
for cap in TOKEN_REGEX.captures_iter(source) {
for cap in TOKEN_REGEX.captures_iter(source.as_ref()) {
let mut enumerator = cap.iter().enumerate();
loop {
let next = enumerator.next();
if next.is_none() {
break
break;
}
let (i, group) = next.unwrap();
@ -477,43 +553,41 @@ pub fn tokenize<'a>(source: &'a str) -> VecDeque<Token<'a>> {
// if we have a match, save it as token
if let Some(mat) = group {
let debug_info = DebugInfo {
source,
start: mat.start() - line_start,
end: mat.end() - line_start,
line: line_count
line: line_count,
};
tokens.push_back(match i {
2 => Token::Keyword(Keyword::parse(mat.as_str()), debug_info),
3 => {
Token::Type(Prim::from(mat.as_str(), &debug_info, source), debug_info)
},
3 => Token::Type(Prim::from(mat.as_str(), &debug_info), debug_info),
4 => Token::Bool(parse_bool(mat.as_str()), debug_info),
5 => {
let var_type = if let Some(mat) = enumerator.next().unwrap().1 {
Some(Prim::from(mat.as_str(), &debug_info, source))
Some(Prim::from(mat.as_str(), &debug_info))
} else {
None
};
Token::Assign(mat.as_str(), var_type, debug_info)
},
}
7 => {
let var_type = Prim::from(enumerator.next().unwrap().1.unwrap().as_str(), &debug_info, source);
let var_type =
Prim::from(enumerator.next().unwrap().1.unwrap().as_str(), &debug_info);
Token::Decl(mat.as_str(), var_type, debug_info)
},
}
9 => Token::Word(mat.as_str(), debug_info),
10 => Token::Number(mat.as_str(), NumberClassHint::from(mat.as_str()), debug_info),
10 => Token::Number(mat.as_str(), NumHint::from(mat.as_str()), debug_info),
11 => Token::Operator(Operator::parse(mat.as_str()), debug_info),
12 => Token::Delemiter(mat.as_str().chars().nth(0).unwrap(), debug_info),
13 => {
line_count += 1;
line_start = mat.start();
Token::LineBreak(debug_info)
},
}
14 => Token::Terminator(debug_info),
_ => {
println!("{}", debug_info.make_msg(crate::msg::ERR71));
//println!("{}", debug_info.make_msg(crate::msg::ERR71));
panic!()
}
});
@ -530,6 +604,6 @@ fn parse_bool(text: &str) -> bool {
"true" | "ye" => true,
"false" | "no" => false,
"maybe" => rand::random(),
_ => panic!("Not a recognized boolean {text}")
}
_ => panic!("Not a recognized boolean {text}"),
};
}