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Continue VM improvements

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This commit is contained in:
Jeff 2025-01-08 23:02:08 -05:00
parent c03ec528b7
commit f667716336
10 changed files with 170 additions and 259 deletions
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1
bench/addictive_addition/run.sh
View File

@ -3,7 +3,6 @@ hyperfine \
--shell none \
--prepare 'sync' \
--warmup 5 \
--export-markdown results.md \
'../../target/release/dust addictive_addition.ds' \
'node addictive_addition.js' \
'deno addictive_addition.js' \

2
bench/recursion/recursion.ds
View File

@ -6,4 +6,4 @@ fn decrement(i: int) -> str {
decrement(i - 1)
}
decrement(1000)
write_line(decrement(10_000))

2
bench/recursion/recursion.js
View File

@ -6,4 +6,4 @@ function decrement(i) {
return decrement(i - 1);
}
decrement(1000);
console.log(decrement(10_000));

12
dust-lang/src/native_function/assertion.rs
View File

@ -1,15 +1,9 @@
use std::{ops::Range, panic};
use crate::{
vm::{Record, ThreadSignal},
NativeFunctionError,
};
use crate::vm::ThreadData;
pub fn panic(
record: &mut Record,
_: Option<u8>,
argument_range: Range<u8>,
) -> Result<ThreadSignal, NativeFunctionError> {
pub fn panic(data: &mut ThreadData, _: Option<u8>, argument_range: Range<u8>) -> bool {
let record = data.records.last_mut_unchecked();
let position = record.current_position();
let mut message = format!("Dust panic at {position}!");

77
dust-lang/src/native_function/io.rs
View File

@ -1,19 +1,21 @@
use std::io::{self, stdin, stdout, Write};
use std::io::{stdin, stdout, Write};
use std::ops::Range;
use crate::vm::{get_next_action, Register, ThreadSignal};
use crate::{vm::Record, ConcreteValue, NativeFunctionError, Value};
use crate::{
vm::{get_next_action, Register, ThreadData},
ConcreteValue, Value,
};
pub fn read_line(
record: &mut Record,
data: &mut ThreadData,
destination: Option<u8>,
_argument_range: Range<u8>,
) -> Result<ThreadSignal, NativeFunctionError> {
) -> bool {
let record = data.records.last_mut_unchecked();
let destination = destination.unwrap();
let mut buffer = String::new();
match stdin().read_line(&mut buffer) {
Ok(_) => {
if stdin().read_line(&mut buffer).is_ok() {
let length = buffer.len();
buffer.truncate(length.saturating_sub(1));
@ -22,72 +24,47 @@ pub fn read_line(
record.set_register(destination, register);
}
Err(error) => {
return Err(NativeFunctionError::Io {
error: error.kind(),
position: record.current_position(),
})
}
data.next_action = get_next_action(record);
false
}
let next_action = get_next_action(record);
Ok(ThreadSignal::Continue(next_action))
}
pub fn write(
record: &mut Record,
_destination: Option<u8>,
argument_range: Range<u8>,
) -> Result<ThreadSignal, NativeFunctionError> {
pub fn write(data: &mut ThreadData, _destination: Option<u8>, argument_range: Range<u8>) -> bool {
let record = data.records.last_mut_unchecked();
let mut stdout = stdout();
for register_index in argument_range {
if let Some(value) = record.open_register_allow_empty_unchecked(register_index) {
let string = value.display(record);
stdout
.write(string.as_bytes())
.map_err(|io_error| NativeFunctionError::Io {
error: io_error.kind(),
position: record.current_position(),
})?;
let _ = stdout.write(string.as_bytes());
}
}
stdout.flush().map_err(|io_error| NativeFunctionError::Io {
error: io_error.kind(),
position: record.current_position(),
})?;
let _ = stdout.flush();
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
Ok(ThreadSignal::Continue(next_action))
false
}
pub fn write_line(
record: &mut Record,
data: &mut ThreadData,
_destination: Option<u8>,
argument_range: Range<u8>,
) -> Result<ThreadSignal, NativeFunctionError> {
let map_err = |io_error: io::Error| NativeFunctionError::Io {
error: io_error.kind(),
position: record.current_position(),
};
) -> bool {
let record = data.records.last_mut_unchecked();
let mut stdout = stdout().lock();
for register_index in argument_range {
if let Some(value) = record.open_register_allow_empty_unchecked(register_index) {
let string = value.display(record);
stdout.write(string.as_bytes()).map_err(map_err)?;
stdout.write(b"\n").map_err(map_err)?;
let _ = stdout.write(string.as_bytes());
let _ = stdout.write(b"\n");
}
}
stdout.flush().map_err(map_err)?;
let _ = stdout.flush();
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
Ok(ThreadSignal::Continue(next_action))
false
}

11
dust-lang/src/native_function/mod.rs
View File

@ -16,10 +16,7 @@ use std::{
use serde::{Deserialize, Serialize};
use smallvec::{smallvec, SmallVec};
use crate::{
vm::{Record, ThreadSignal},
AnnotatedError, FunctionType, Span, Type,
};
use crate::{vm::ThreadData, AnnotatedError, FunctionType, Span, Type};
macro_rules! define_native_function {
($(($name:ident, $bytes:literal, $str:expr, $type:expr, $function:expr)),*) => {
@ -36,13 +33,13 @@ macro_rules! define_native_function {
impl NativeFunction {
pub fn call(
&self,
record: &mut Record,
data: &mut ThreadData,
destination: Option<u8>,
argument_range: Range<u8>,
) -> Result<ThreadSignal, NativeFunctionError> {
) -> bool {
match self {
$(
NativeFunction::$name => $function(record, destination, argument_range),
NativeFunction::$name => $function(data, destination, argument_range),
)*
}
}

13
dust-lang/src/native_function/string.rs
View File

@ -1,15 +1,16 @@
use std::ops::Range;
use crate::{
vm::{get_next_action, Record, Register, ThreadSignal},
ConcreteValue, NativeFunctionError, Value,
vm::{get_next_action, Register, ThreadData},
ConcreteValue, Value,
};
pub fn to_string(
record: &mut Record,
data: &mut ThreadData,
destination: Option<u8>,
argument_range: Range<u8>,
) -> Result<ThreadSignal, NativeFunctionError> {
) -> bool {
let record = data.records.last_mut_unchecked();
let argument_value = record.open_register_unchecked(argument_range.start);
let argument_string = argument_value.display(record);
let destination = destination.unwrap();
@ -17,7 +18,7 @@ pub fn to_string(
record.set_register(destination, register);
let next_action = get_next_action(record);
data.next_action = get_next_action(record);
Ok(ThreadSignal::Continue(next_action))
false
}

2
dust-lang/src/vm/mod.rs
View File

@ -16,7 +16,7 @@ pub use record::Record;
pub(crate) use run_action::get_next_action;
pub use run_action::RunAction;
pub use stack::{FunctionCall, Stack};
pub use thread::{Thread, ThreadSignal};
pub use thread::{Thread, ThreadData};
use tracing::{span, Level};

239
dust-lang/src/vm/run_action.rs
View File

@ -10,7 +10,7 @@ use crate::{
AbstractList, Argument, ConcreteValue, DustString, Instruction, Type, Value,
};
use super::{thread::ThreadData, Pointer, Record, Register, ThreadSignal};
use super::{thread::ThreadData, Pointer, Record, Register};
#[derive(Clone, Copy, Debug, PartialEq)]
pub struct RunAction {
@ -27,7 +27,7 @@ impl From<Instruction> for RunAction {
}
}
pub type RunnerLogic = fn(Instruction, &mut ThreadData) -> ThreadSignal;
pub type RunnerLogic = fn(Instruction, &mut ThreadData) -> bool;
pub const RUNNER_LOGIC_TABLE: [RunnerLogic; 25] = [
point,
@ -57,15 +57,17 @@ pub const RUNNER_LOGIC_TABLE: [RunnerLogic; 25] = [
r#return,
];
pub(crate) fn get_next_action(record: &Record) -> RunAction {
pub(crate) fn get_next_action(record: &mut Record) -> RunAction {
let instruction = record.chunk.instructions[record.ip];
let operation = instruction.operation();
let logic = RUNNER_LOGIC_TABLE[operation.0 as usize];
record.ip += 1;
RunAction { logic, instruction }
}
pub fn point(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn point(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Point { from, to } = instruction.into();
let from_register = record.get_register_unchecked(from);
@ -77,14 +79,12 @@ pub fn point(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.set_register(from, register);
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn close(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn close(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Close { from, to } = instruction.into();
@ -92,14 +92,12 @@ pub fn close(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.set_register(register_index, Register::Empty);
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn load_boolean(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn load_boolean(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let LoadBoolean {
destination,
@ -115,14 +113,12 @@ pub fn load_boolean(instruction: Instruction, data: &mut ThreadData) -> ThreadSi
record.ip += 1;
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn load_constant(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn load_constant(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let LoadConstant {
destination,
@ -139,14 +135,12 @@ pub fn load_constant(instruction: Instruction, data: &mut ThreadData) -> ThreadS
record.ip += 1;
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn load_list(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn load_list(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let LoadList {
destination,
@ -183,14 +177,12 @@ pub fn load_list(instruction: Instruction, data: &mut ThreadData) -> ThreadSigna
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn load_function(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn load_function(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let LoadFunction {
destination,
@ -202,14 +194,12 @@ pub fn load_function(instruction: Instruction, data: &mut ThreadData) -> ThreadS
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn load_self(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn load_self(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let LoadSelf { destination } = instruction.into();
let function = record.as_function();
@ -217,14 +207,12 @@ pub fn load_self(instruction: Instruction, data: &mut ThreadData) -> ThreadSigna
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn get_local(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn get_local(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let GetLocal {
destination,
@ -235,14 +223,12 @@ pub fn get_local(instruction: Instruction, data: &mut ThreadData) -> ThreadSigna
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn set_local(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn set_local(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let SetLocal {
register_index,
@ -253,14 +239,12 @@ pub fn set_local(instruction: Instruction, data: &mut ThreadData) -> ThreadSigna
record.set_register(local_register_index, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn add(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn add(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Add {
destination,
@ -274,14 +258,12 @@ pub fn add(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn subtract(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn subtract(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Subtract {
destination,
@ -295,14 +277,12 @@ pub fn subtract(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn multiply(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn multiply(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Multiply {
destination,
@ -324,14 +304,12 @@ pub fn multiply(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn divide(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn divide(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Divide {
destination,
@ -353,14 +331,12 @@ pub fn divide(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn modulo(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn modulo(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Modulo {
destination,
@ -382,14 +358,12 @@ pub fn modulo(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn test(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn test(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Test {
operand_register,
@ -406,14 +380,12 @@ pub fn test(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.ip += 1;
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn test_set(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn test_set(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let TestSet {
destination,
@ -428,7 +400,6 @@ pub fn test_set(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal
};
if boolean == test_value {
record.ip += 1;
} else {
let pointer = match argument {
Argument::Constant(constant_index) => Pointer::Constant(constant_index),
@ -439,14 +410,12 @@ pub fn test_set(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal
record.set_register(destination, register);
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn equal(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn equal(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Equal { value, left, right } = instruction.into();
let left = record.get_argument_unchecked(left);
@ -457,14 +426,12 @@ pub fn equal(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.ip += 1;
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn less(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn less(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Less { value, left, right } = instruction.into();
let left = record.get_argument_unchecked(left);
@ -475,14 +442,12 @@ pub fn less(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.ip += 1;
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn less_equal(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn less_equal(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let LessEqual { value, left, right } = instruction.into();
let left = record.get_argument_unchecked(left);
@ -493,14 +458,12 @@ pub fn less_equal(instruction: Instruction, data: &mut ThreadData) -> ThreadSign
record.ip += 1;
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn negate(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn negate(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Negate {
destination,
@ -512,14 +475,12 @@ pub fn negate(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn not(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn not(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Not {
destination,
@ -534,14 +495,12 @@ pub fn not(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.set_register(destination, register);
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn jump(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn jump(instruction: Instruction, data: &mut ThreadData) -> bool {
let record = data.records.last_mut_unchecked();
let Jump {
offset,
@ -555,22 +514,19 @@ pub fn jump(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
record.ip -= offset + 1;
}
record.ip += 1;
data.next_action = get_next_action(record);
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
false
}
pub fn call(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
let mut current_record = data.records.pop_unchecked();
pub fn call(instruction: Instruction, data: &mut ThreadData) -> bool {
let current_record = data.records.pop_unchecked();
let Call {
destination: return_register,
function_register,
argument_count,
is_recursive,
} = instruction.into();
let function = current_record
.open_register_unchecked(function_register)
.as_function()
@ -602,19 +558,16 @@ pub fn call(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
next_record.set_register(argument_index as u8, Register::Value(argument));
}
let next_action = get_next_action(&next_record);
current_record.ip += 1;
data.next_action = get_next_action(&mut next_record);
data.call_stack.push(next_call);
data.records.push(current_record);
data.records.push(next_record);
ThreadSignal::Continue(next_action)
false
}
pub fn call_native(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
let record = data.records.last_mut_unchecked();
pub fn call_native(instruction: Instruction, data: &mut ThreadData) -> bool {
let CallNative {
destination,
function,
@ -623,18 +576,10 @@ pub fn call_native(instruction: Instruction, data: &mut ThreadData) -> ThreadSig
let first_argument_index = destination - argument_count;
let argument_range = first_argument_index..destination;
function
.call(record, Some(destination), argument_range)
.unwrap_or_else(|error| panic!("{error:?}"));
record.ip += 1;
let next_action = get_next_action(record);
ThreadSignal::Continue(next_action)
function.call(data, Some(destination), argument_range)
}
pub fn r#return(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal {
pub fn r#return(instruction: Instruction, data: &mut ThreadData) -> bool {
trace!("Returning with call stack:\n{}", data.call_stack);
let Return {
@ -642,29 +587,29 @@ pub fn r#return(instruction: Instruction, data: &mut ThreadData) -> ThreadSignal
return_register,
} = instruction.into();
let current_call = data.call_stack.pop_unchecked();
let mut current_record = data.records.pop_unchecked();
let return_value = if should_return_value {
Some(current_record.empty_register_or_clone_constant_unchecked(return_register))
} else {
None
let mut current_record = if data.call_stack.is_empty() {
if should_return_value {
data.return_value_index = Some(return_register);
};
let destination = current_call.return_register;
if data.call_stack.is_empty() {
return ThreadSignal::End(return_value);
}
return true;
} else {
data.records.pop_unchecked()
};
let outer_record = data.records.last_mut_unchecked();
let destination = current_call.return_register;
if should_return_value {
outer_record.set_register(destination, Register::Value(return_value.unwrap()));
let return_value =
current_record.empty_register_or_clone_constant_unchecked(return_register);
outer_record.set_register(destination, Register::Value(return_value));
}
let next_action = get_next_action(outer_record);
data.next_action = get_next_action(outer_record);
ThreadSignal::Continue(next_action)
false
}
#[cfg(test)]

68
dust-lang/src/vm/thread.rs
View File

@ -1,6 +1,4 @@
use std::fmt::{self, Display, Formatter};
use tracing::info;
use tracing::{info, trace};
use crate::{vm::FunctionCall, Chunk, DustString, Value};
@ -16,15 +14,6 @@ impl Thread {
}
pub fn run(&mut self) -> Option<Value> {
let mut call_stack = Stack::with_capacity(self.chunk.prototypes.len() + 1);
let mut records = Stack::with_capacity(self.chunk.prototypes.len() + 1);
let main_call = FunctionCall {
name: self.chunk.name.clone(),
return_register: 0,
ip: 0,
};
let main_record = Record::new(&self.chunk);
info!(
"Starting thread with {}",
self.chunk
@ -33,28 +22,47 @@ impl Thread {
.unwrap_or_else(|| DustString::from("anonymous"))
);
let mut call_stack = Stack::with_capacity(self.chunk.prototypes.len() + 1);
let mut records = Stack::with_capacity(self.chunk.prototypes.len() + 1);
let main_call = FunctionCall {
name: self.chunk.name.clone(),
return_register: 0, // Never used, the main function's return is the thread's return
ip: 0,
};
let main_record = Record::new(&self.chunk);
call_stack.push(main_call);
records.push(main_record);
let first_action = RunAction::from(*self.chunk.instructions.first().unwrap());
let mut thread_data = ThreadData {
call_stack,
records,
next_action: first_action,
return_value_index: None,
};
let mut next_action = RunAction::from(*self.chunk.instructions.first().unwrap());
loop {
let signal = (next_action.logic)(next_action.instruction, &mut thread_data);
trace!("Instruction: {}", thread_data.next_action.instruction);
match signal {
ThreadSignal::Continue(action) => {
next_action = action;
}
ThreadSignal::End(value_option) => {
info!("Thread ended");
let should_end = (thread_data.next_action.logic)(
thread_data.next_action.instruction,
&mut thread_data,
);
return value_option;
}
if should_end {
let return_value = if let Some(register_index) = thread_data.return_value_index {
let value = thread_data
.records
.last_mut_unchecked()
.empty_register_or_clone_constant_unchecked(register_index);
Some(value)
} else {
None
};
return return_value;
}
}
}
@ -64,16 +72,6 @@ impl Thread {
pub struct ThreadData<'a> {
pub call_stack: Stack<FunctionCall>,
pub records: Stack<Record<'a>>,
}
#[derive(Debug)]
pub enum ThreadSignal {
Continue(RunAction),
End(Option<Value>),
}
impl Display for ThreadSignal {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "{:?}", self)
}
pub next_action: RunAction,
pub return_value_index: Option<u8>,
}