fixed variable store
This commit is contained in:
parent
2d7cf80101
commit
ee1418c673
37
src/main.rs
37
src/main.rs
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@ -23,38 +23,15 @@ where
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fn main() {
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let source = r"
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# surely this is pi
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pi = rat 5.1415926535
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foo(x:int, y:rat) = bool {
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x:int = 5 + 6
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unless (x < 6) {
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yield true
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please {
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}
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unless(x < 6) {
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yield true
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}
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}
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-- comment
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yield true
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foo(x:int) = int {
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x / 2
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}
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main() = int {
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a = foo(4)
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a = 4
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b = pi
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c = true
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r = foo(3, 4.0)
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h = foo(3,5.0)
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b:int = 4
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9
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a
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}
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";
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@ -64,8 +41,10 @@ main() = int {
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if let Ok(mut tokens) = tokenize(source, &mut diagnostics) {
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if let Ok((fs, ds)) = parse(&mut tokens, &mut diagnostics, &settings) {
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if let Ok(prog) = vmrt::compile(&fs, &ds) {
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vmrt::execute(&prog);
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if let Ok(prog) = vmrt::compile(&fs, &ds, &settings) {
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if let Ok(exit_code) = vmrt::execute(&prog) {
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crate::message(MessageType::Info, format!("Program exited with {}", exit_code));
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}
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}
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}
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}
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320
src/vmrt/mod.rs
320
src/vmrt/mod.rs
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@ -1,6 +1,11 @@
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use std::collections::{VecDeque, HashMap};
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mod output;
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use crate::{parser::data::*, token::{Token, NumHint, Prim}};
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use std::collections::{HashMap, VecDeque};
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use crate::{
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parser::data::*,
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token::{NumHint, Prim, Token},
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};
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#[derive(Debug, Clone, Copy)]
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enum Data {
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@ -10,6 +15,29 @@ enum Data {
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Off(u64),
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}
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impl Data {
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fn to_int(&self) -> Result<i64, ()> {
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return match self {
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Data::Int(v) => Ok(*v),
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_ => Err(()),
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};
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}
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fn to_float(&self) -> Result<f64, ()> {
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return match self {
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Data::Rat(v) => Ok(*v),
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_ => Err(()),
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};
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}
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fn to_bool(&self) -> Result<bool, ()> {
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return match self {
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Data::Bool(v) => Ok(*v),
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_ => Err(()),
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};
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}
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}
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#[derive(Debug)]
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enum IntOp {
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CmpEq,
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@ -22,7 +50,7 @@ enum IntOp {
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Add,
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Sub,
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Mul,
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Div
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Div,
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}
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#[derive(Debug)]
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@ -37,7 +65,7 @@ enum RatOp {
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Add,
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Sub,
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Mul,
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Div
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Div,
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}
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#[derive(Debug)]
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@ -47,14 +75,14 @@ enum BoolOp {
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And,
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Or,
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Xor
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Xor,
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}
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#[derive(Debug)]
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enum Operation {
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Int(IntOp),
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Rat(RatOp),
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Bool(BoolOp)
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Bool(BoolOp),
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}
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#[derive(Debug)]
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@ -75,14 +103,11 @@ enum Instr {
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Operation(Operation),
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Exit
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Exit,
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}
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/// function stack layout
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/// +----------------------------------+
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/// | Return address |
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/// +----------------------------------+
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/// | Parameter (0) |
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/// +----------------------------------+
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/// | Parameter (1) |
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@ -92,14 +117,17 @@ enum Instr {
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/// | Parameter (n) |
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/// +----------------------------------+
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struct Proc {
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// executable code
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code: Vec<Instr>,
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// number of expected arguments
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args: usize,
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// hashed declaration is used as "address"
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addr: u64,
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}
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#[derive(Default)]
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pub struct Program {
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code: HashMap<u64, Proc>
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procs: HashMap<u64, Proc>,
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}
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#[derive(Default)]
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@ -108,7 +136,13 @@ struct Compiletime<'a> {
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stacksize: usize,
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}
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fn parse_term<'a>(term: &VecDeque<Token<'a>>, x: usize, declr: &Vec<Declr<'a>>, ct: &mut Compiletime<'a>, code: &mut Vec<Instr>) -> Result<(), ()>{
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fn parse_term<'a>(
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term: &VecDeque<Token<'a>>,
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x: usize,
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declr: &Vec<Declr<'a>>,
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ct: &mut Compiletime<'a>,
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code: &mut Vec<Instr>,
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) -> Result<(), ()> {
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for token in term.iter() {
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let instr = match token {
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Token::Number(value, hint, _) => {
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@ -117,26 +151,25 @@ fn parse_term<'a>(term: &VecDeque<Token<'a>>, x: usize, declr: &Vec<Declr<'a>>,
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NumHint::Rat => Data::Rat(value.parse::<f64>().unwrap()),
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}));
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ct.stacksize += 1;
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},
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}
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Token::Bool(value, _) => {
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code.push(Instr::Push(Data::Bool(*value)));
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ct.stacksize += 1;
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},
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}
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Token::Arg(name, _) => {
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let off = declr[x].get_arg_ord(name);
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code.push(Instr::Load(off + 1));
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code.push(Instr::Load(off));
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ct.stacksize += 1;
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},
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}
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Token::Assign(name, _, _) => {
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ct.vartable.insert(name.clone(), ct.stacksize - 1);
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},
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}
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Token::Var(name, _) => {
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code.push(Instr::Load(*ct.vartable.get(name).unwrap()));
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ct.stacksize += 1;
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}
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Token::Operator(op, hint, _) => {
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code.push(match op {
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crate::token::Operator::Or => Instr::Operation(Operation::Bool(BoolOp::Or)),
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crate::token::Operator::And => Instr::Operation(Operation::Bool(BoolOp::And)),
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@ -145,96 +178,112 @@ fn parse_term<'a>(term: &VecDeque<Token<'a>>, x: usize, declr: &Vec<Declr<'a>>,
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crate::token::Operator::Add => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::Add)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::Add)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::Sub => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::Sub)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::Sub)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::Mul => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::Mul)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::Mul)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::Div => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::Div)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::Div)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::Eq => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpEq)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpEq)),
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Prim::Bool => Instr::Operation(Operation::Bool(BoolOp::CmpEq)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::NotEq => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpNEq)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpNEq)),
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Prim::Bool => Instr::Operation(Operation::Bool(BoolOp::CmpNEq)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::Lt => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpLt)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpLt)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::Gt => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpGt)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpGt)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::GtEq => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpGtEq)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpGtEq)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::LtEq => match hint.unwrap() {
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Prim::Int => Instr::Operation(Operation::Int(IntOp::CmpLtEq)),
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Prim::Rat => Instr::Operation(Operation::Rat(RatOp::CmpLtEq)),
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_ => panic!()
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_ => panic!(),
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},
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crate::token::Operator::Assign => {
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crate::message(crate::token::MessageType::Critical, format!("Invalid operator: {:?}", op));
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crate::message(
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crate::token::MessageType::Critical,
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format!("Invalid operator: {:?}", op),
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);
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return Err(());
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}
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});
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// TODO: operatiors
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// we pop 2 values as arguments and push 1 as result (-2 + 1 = 1)
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ct.stacksize -= 1;
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},
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}
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Token::Func(name, _) => {
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for decl in declr.iter() {
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if decl.name.as_ref().unwrap() == name {
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code.push(Instr::Call(decl.uuid()))
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}
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}
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}
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Token::Keyword(keyword, _) => {
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match keyword {
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crate::token::Keyword::Yield | crate::token::Keyword::Return => code.push(Instr::Return),
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_ => ()
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}
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}
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code.push(Instr::Call(decl.uuid()));
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if decl.results {
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ct.stacksize += 1;
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}
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}
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}
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}
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Token::Keyword(keyword, _) => match keyword {
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crate::token::Keyword::Yield | crate::token::Keyword::Return => {
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code.push(Instr::Return)
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}
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_ => (),
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},
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_ => ()
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_ => (),
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};
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}
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Ok(())
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}
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fn parse_block<'a>(block: &VecDeque<Expr<'a>>, x: usize, declr: &Vec<Declr<'a>>, ct: &mut Compiletime<'a>, prog: &mut Vec<Instr>) -> Result<(), ()> {
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fn parse_block<'a>(
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block: &VecDeque<Expr<'a>>,
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x: usize,
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declr: &Vec<Declr<'a>>,
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ct: &mut Compiletime<'a>,
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prog: &mut Vec<Instr>,
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) -> Result<(), ()> {
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for expr in block.iter() {
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compile_expr(expr, x, declr, ct, prog)?;
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}
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Ok(())
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}
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fn compile_expr<'a>(expr: &Expr<'a>, x: usize, declr: &Vec<Declr<'a>>, ct: &mut Compiletime<'a>, prog: &mut Vec<Instr>) -> Result<(), ()> {
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fn compile_expr<'a>(
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expr: &Expr<'a>,
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x: usize,
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declr: &Vec<Declr<'a>>,
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ct: &mut Compiletime<'a>,
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prog: &mut Vec<Instr>,
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) -> Result<(), ()> {
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match expr {
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Expr::Block(block) => parse_block(block, x, declr, ct, prog)?,
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Expr::Term(term) => parse_term(term, x, declr, ct, prog)?,
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@ -243,34 +292,197 @@ fn compile_expr<'a>(expr: &Expr<'a>, x: usize, declr: &Vec<Declr<'a>>, ct: &mut
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Ok(())
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}
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pub fn compile<'a>(funcs: &Vec<Func<'a>>, declrs: &Vec<Declr<'a>>) -> Result<Program, ()> {
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fn create_proc(declr: &Declr, code: Vec<Instr>) -> Proc {
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Proc {
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code,
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args: if let Some(args) = &declr.args {
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args.len()
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} else {
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0
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},
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addr: declr.uuid(),
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}
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}
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pub fn compile<'a>(funcs: &Vec<Func<'a>>, declrs: &Vec<Declr<'a>>, settings: &crate::conf::Settings) -> Result<Program, ()> {
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let mut prog = Program::default();
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for (x, func) in funcs.iter().enumerate() {
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let mut code = vec![];
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let mut ct = Compiletime::default();
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// at beginn the is the return address and the parameter on the stack
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ct.stacksize = declrs[x].args.as_ref().unwrap_or(&vec![]).len() + 1;
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//at the beginning there are all parameters on the stack
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ct.stacksize = declrs[x].args.as_ref().unwrap_or(&vec![]).len();
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compile_expr(func.expr.as_ref().unwrap(), x, declrs, &mut ct, &mut code)?;
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println!("{:#?}", code);
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prog.code.insert(declrs[x].uuid(), code);
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prog.procs
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.insert(declrs[x].uuid(), create_proc(&declrs[x], code));
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}
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Ok(prog)
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}
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struct Runtimestack {
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stack: Vec<Data>,
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}
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impl Runtimestack {
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pub fn new() -> Runtimestack {
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Self { stack: vec![] }
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}
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pub fn push(&mut self, data: Data) {
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self.stack.push(data);
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}
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pub fn pop(&mut self) -> Option<Data> {
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self.stack.pop()
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}
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pub fn peek(&mut self, index: usize) -> Data {
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self.stack[index]
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}
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}
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fn call_fn(prog: &Program, proc: &Proc, superstack: &[Data]) -> Result<Option<Data>, ()> {
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let mut stack = Runtimestack::new();
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// build local procedure stack
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for i in 0..proc.args {
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stack.push(superstack[superstack.len() - i - 1].clone());
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}
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for instr in proc.code.iter() {
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match instr {
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Instr::Pop => {
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stack.pop();
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}
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Instr::Return => {
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return Ok(stack.pop());
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}
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Instr::Push(data) => stack.push(*data),
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Instr::Load(offset) => {
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let v = stack.peek(*offset);
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stack.push(v);
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},
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Instr::Call(addr) => {
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if let Some(value) = call_fn(prog, prog.procs.get(addr).unwrap(), &stack.stack)? {
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stack.push(value);
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}
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},
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Instr::Operation(op) => {
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let op0:Data = if let Some(data) = stack.pop() {
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data
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} else {
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return Err(());
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};
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let op1:Data = if let Some(data) = stack.pop() {
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data
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} else {
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return Err(());
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};
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match op {
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Operation::Int(op) => match op {
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IntOp::Add => stack.push(Data::Int(op1.to_int()? + op0.to_int()?)),
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IntOp::Sub => stack.push(Data::Int(op1.to_int()? - op0.to_int()?)),
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IntOp::Mul => stack.push(Data::Int(op1.to_int()? * op0.to_int()?)),
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IntOp::Div => stack.push(Data::Int(op1.to_int()? / op0.to_int()?)),
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IntOp::CmpEq => {
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stack.push(Data::Bool(op1.to_int()? == op0.to_int()?))
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}
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IntOp::CmpNEq => {
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stack.push(Data::Bool(op1.to_int()? != op0.to_int()?))
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}
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IntOp::CmpLt => stack.push(Data::Bool(op1.to_int()? < op0.to_int()?)),
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IntOp::CmpGt => stack.push(Data::Bool(op1.to_int()? > op0.to_int()?)),
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IntOp::CmpGtEq => {
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stack.push(Data::Bool(op1.to_int()? <= op0.to_int()?))
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}
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IntOp::CmpLtEq => {
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stack.push(Data::Bool(op1.to_int()? >= op0.to_int()?))
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}
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},
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Operation::Rat(op) => match op {
|
||||
RatOp::Add => {
|
||||
stack.push(Data::Rat(op1.to_float()? + op0.to_float()?))
|
||||
}
|
||||
RatOp::Sub => {
|
||||
stack.push(Data::Rat(op1.to_float()? - op0.to_float()?))
|
||||
}
|
||||
RatOp::Mul => {
|
||||
stack.push(Data::Rat(op1.to_float()? * op0.to_float()?))
|
||||
}
|
||||
RatOp::Div => {
|
||||
stack.push(Data::Rat(op1.to_float()? / op0.to_float()?))
|
||||
}
|
||||
|
||||
RatOp::CmpEq => {
|
||||
stack.push(Data::Bool(op1.to_float()? == op0.to_float()?))
|
||||
}
|
||||
RatOp::CmpNEq => {
|
||||
stack.push(Data::Bool(op1.to_float()? != op0.to_float()?))
|
||||
}
|
||||
RatOp::CmpLt => {
|
||||
stack.push(Data::Bool(op1.to_float()? < op0.to_float()?))
|
||||
}
|
||||
RatOp::CmpGt => {
|
||||
stack.push(Data::Bool(op1.to_float()? > op0.to_float()?))
|
||||
}
|
||||
RatOp::CmpGtEq => {
|
||||
stack.push(Data::Bool(op1.to_float()? <= op0.to_float()?))
|
||||
}
|
||||
RatOp::CmpLtEq => {
|
||||
stack.push(Data::Bool(op1.to_float()? >= op0.to_float()?))
|
||||
}
|
||||
},
|
||||
Operation::Bool(op) => match op {
|
||||
BoolOp::Or => {
|
||||
stack.push(Data::Bool(op1.to_bool()? || op0.to_bool()?))
|
||||
}
|
||||
BoolOp::And => {
|
||||
stack.push(Data::Bool(op1.to_bool()? && op0.to_bool()?))
|
||||
}
|
||||
BoolOp::Xor => {
|
||||
stack.push(Data::Bool(op1.to_bool()? ^ op0.to_bool()?))
|
||||
}
|
||||
BoolOp::CmpEq => {
|
||||
stack.push(Data::Bool(op1.to_bool()? == op0.to_bool()?))
|
||||
}
|
||||
BoolOp::CmpNEq => {
|
||||
stack.push(Data::Bool(op1.to_bool()? != op0.to_bool()?))
|
||||
}
|
||||
},
|
||||
}
|
||||
}
|
||||
_ => (),
|
||||
}
|
||||
}
|
||||
|
||||
Ok(stack.pop())
|
||||
}
|
||||
|
||||
pub fn execute(prog: &Program) -> Result<i64, ()> {
|
||||
// declaration of entry function
|
||||
let main_fn_declr = crate::parser::data::Declr::main();
|
||||
|
||||
if let Some(main_fn) = prog.code.get(&main_fn_declr.uuid()) {
|
||||
if let Some(main_fn) = prog.procs.get(&main_fn_declr.uuid()) {
|
||||
|
||||
Ok(0)
|
||||
if let Some(exit_code) = call_fn(prog, main_fn, &[])? {
|
||||
return Ok(exit_code.to_int()?);
|
||||
}
|
||||
|
||||
crate::message(crate::token::MessageType::Critical, "main procedure did not return exit code");
|
||||
return Err(());
|
||||
} else {
|
||||
crate::message(crate::token::MessageType::Critical, "Program has no main() = int function");
|
||||
crate::message(
|
||||
crate::token::MessageType::Critical,
|
||||
"Program has no main() = int function",
|
||||
);
|
||||
return Err(());
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,20 @@
|
|||
use std::io::Write;
|
||||
|
||||
fn print_to_file(file: &mut std::fs::File, prog: &crate::vmrt::Program) -> std::io::Result<()> {
|
||||
for proc in prog.procs.iter() {
|
||||
writeln!(file, "\n0x{:#x}:", proc.0)?;
|
||||
|
||||
for instr in proc.1.code.iter() {
|
||||
writeln!(file, "{}", instr)?;
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
|
||||
pub fn dump_program(prog: &crate::vmrt::Program) {
|
||||
let mut file = std::fs::OpenOptions::new().write(true).create(true).truncate(true).open("prog.vsasm").unwrap();
|
||||
|
||||
if print_to_file(&mut file, prog).is_err() {
|
||||
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue