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Continue Value/VM overhaul

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This commit is contained in:
Jeff 2024-11-15 21:42:27 -05:00
parent 69458a138d
commit 7b91e879b7
11 changed files with 619 additions and 379 deletions
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14
dust-lang/src/chunk.rs
View File

@ -8,7 +8,7 @@ use std::fmt::{self, Debug, Display, Formatter};
use serde::{Deserialize, Serialize};
use crate::{value::Value, Disassembler, FunctionType, Instruction, Scope, Span, Type};
use crate::{ConcreteValue, Disassembler, FunctionType, Instruction, Scope, Span, Type};
/// In-memory representation of a Dust program or function.
///
@ -19,7 +19,7 @@ pub struct Chunk {
r#type: FunctionType,
instructions: Vec<(Instruction, Span)>,
constants: Vec<Value>,
constants: Vec<ConcreteValue>,
locals: Vec<Local>,
}
@ -41,7 +41,7 @@ impl Chunk {
pub fn with_data(
name: Option<String>,
instructions: Vec<(Instruction, Span)>,
constants: Vec<Value>,
constants: Vec<ConcreteValue>,
locals: Vec<Local>,
) -> Self {
Self {
@ -77,15 +77,15 @@ impl Chunk {
self.instructions.is_empty()
}
pub fn constants(&self) -> &Vec<Value> {
pub fn constants(&self) -> &Vec<ConcreteValue> {
&self.constants
}
pub fn constants_mut(&mut self) -> &mut Vec<Value> {
pub fn constants_mut(&mut self) -> &mut Vec<ConcreteValue> {
&mut self.constants
}
pub fn get_constant(&self, index: u8) -> Result<&Value, ChunkError> {
pub fn get_constant(&self, index: u8) -> Result<&ConcreteValue, ChunkError> {
self.constants
.get(index as usize)
.ok_or(ChunkError::ConstantIndexOutOfBounds {
@ -93,7 +93,7 @@ impl Chunk {
})
}
pub fn push_or_get_constant(&mut self, value: Value) -> u8 {
pub fn push_or_get_constant(&mut self, value: ConcreteValue) -> u8 {
if let Some(index) = self
.constants
.iter()

24
dust-lang/src/compiler.rs
View File

@ -13,7 +13,7 @@ use std::{
use colored::Colorize;
use crate::{
value::Value, AnnotatedError, Chunk, ChunkError, DustError, FunctionType, Instruction,
value::ConcreteValue, AnnotatedError, Chunk, ChunkError, DustError, FunctionType, Instruction,
LexError, Lexer, Local, NativeFunction, Operation, Optimizer, Scope, Span, Token, TokenKind,
TokenOwned, Type, TypeConflict,
};
@ -158,7 +158,7 @@ impl<'src> Compiler<'src> {
.chunk
.constants()
.get(local.identifier_index as usize)?;
let identifier = if let Value::String(identifier) = constant {
let identifier = if let ConcreteValue::String(identifier) = constant {
identifier
} else {
return None;
@ -186,7 +186,7 @@ impl<'src> Compiler<'src> {
) -> (u8, u8) {
log::debug!("Declare local {identifier}");
let identifier = Value::string(identifier);
let identifier = ConcreteValue::string(identifier);
let identifier_index = self.chunk.push_or_get_constant(identifier);
self.chunk
@ -368,7 +368,11 @@ impl<'src> Compiler<'src> {
self.chunk.instructions_mut().push((instruction, position));
}
fn emit_constant(&mut self, constant: Value, position: Span) -> Result<(), CompileError> {
fn emit_constant(
&mut self,
constant: ConcreteValue,
position: Span,
) -> Result<(), CompileError> {
let constant_index = self.chunk.push_or_get_constant(constant);
let register = self.next_register();
@ -414,7 +418,7 @@ impl<'src> Compiler<'src> {
let byte = u8::from_str_radix(&text[2..], 16)
.map_err(|error| CompileError::ParseIntError { error, position })?;
let value = Value::byte(byte);
let value = ConcreteValue::byte(byte);
self.emit_constant(value, position)?;
@ -436,7 +440,7 @@ impl<'src> Compiler<'src> {
if let Token::Character(character) = self.current_token {
self.advance()?;
let value = Value::character(character);
let value = ConcreteValue::character(character);
self.emit_constant(value, position)?;
@ -464,7 +468,7 @@ impl<'src> Compiler<'src> {
error,
position: self.previous_position,
})?;
let value = Value::float(float);
let value = ConcreteValue::float(float);
self.emit_constant(value, position)?;
@ -492,7 +496,7 @@ impl<'src> Compiler<'src> {
error,
position: self.previous_position,
})?;
let value = Value::integer(integer);
let value = ConcreteValue::integer(integer);
self.emit_constant(value, position)?;
@ -514,7 +518,7 @@ impl<'src> Compiler<'src> {
if let Token::String(text) = self.current_token {
self.advance()?;
let value = Value::string(text);
let value = ConcreteValue::string(text);
self.emit_constant(value, position)?;
@ -1472,7 +1476,7 @@ impl<'src> Compiler<'src> {
value_parameters,
return_type,
};
let function = Value::function(function_compiler.finish());
let function = ConcreteValue::function(function_compiler.finish());
let constant_index = self.chunk.push_or_get_constant(function);
let function_end = self.current_position.1;
let register = self.next_register();

4
dust-lang/src/disassembler.rs
View File

@ -45,7 +45,7 @@ use std::env::current_exe;
use colored::Colorize;
use crate::{value::Value, Chunk, Local};
use crate::{value::ConcreteValue, Chunk, Local};
const INSTRUCTION_HEADER: [&str; 4] = [
"Instructions",
@ -313,7 +313,7 @@ impl<'a> Disassembler<'a> {
}
for (index, value) in self.chunk.constants().iter().enumerate() {
if let Value::Function(chunk) = value {
if let ConcreteValue::Function(chunk) = value {
let function_disassembly = chunk
.disassembler()
.styled(self.styled)

4
dust-lang/src/lib.rs
View File

@ -29,7 +29,9 @@ pub use crate::optimizer::Optimizer;
pub use crate::r#type::{EnumType, FunctionType, StructType, Type, TypeConflict};
pub use crate::scope::Scope;
pub use crate::token::{output_token_list, Token, TokenKind, TokenOwned};
pub use crate::value::{Value, ValueError};
pub use crate::value::{
AbstractValue, ConcreteValue, RangeValue, ValueError, ValueOwned, ValueRef,
};
pub use crate::vm::{run, Vm, VmError};
use std::fmt::Display;

43
dust-lang/src/native_function/logic.rs
View File

@ -1,8 +1,8 @@
use std::io::{self, stdout, Write};
use crate::{Instruction, NativeFunctionError, Value, Vm, VmError};
use crate::{ConcreteValue, Instruction, NativeFunctionError, ValueOwned, Vm, VmError};
pub fn panic(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError> {
pub fn panic<'a>(vm: &'a Vm<'a>, instruction: Instruction) -> Result<Option<ValueOwned>, VmError> {
let argument_count = instruction.c();
let message = if argument_count == 0 {
None
@ -15,8 +15,9 @@ pub fn panic(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError
}
let argument = vm.open_register(argument_index)?;
let argument_string = argument.display(vm)?;
message.push_str(&argument.to_string());
message.push_str(&argument_string);
}
Some(message)
@ -28,7 +29,10 @@ pub fn panic(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError
}))
}
pub fn to_string(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError> {
pub fn to_string<'a>(
vm: &'a Vm<'a>,
instruction: Instruction,
) -> Result<Option<ValueOwned>, VmError> {
let argument_count = instruction.c();
if argument_count != 1 {
@ -45,14 +49,18 @@ pub fn to_string(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmE
for argument_index in 0..argument_count {
let argument = vm.open_register(argument_index)?;
let argument_string = argument.display(vm)?;
string.push_str(&argument.to_string());
string.push_str(&argument_string);
}
Ok(Some(Value::String(string)))
Ok(Some(ValueOwned::Concrete(ConcreteValue::String(string))))
}
pub fn read_line(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError> {
pub fn read_line<'a>(
vm: &'a Vm<'a>,
instruction: Instruction,
) -> Result<Option<ValueOwned>, VmError> {
let argument_count = instruction.c();
if argument_count != 0 {
@ -68,9 +76,11 @@ pub fn read_line(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmE
let mut buffer = String::new();
match io::stdin().read_line(&mut buffer) {
Ok(_) => Ok(Some(Value::String(
buffer.trim_end_matches('\n').to_string(),
))),
Ok(_) => {
buffer = buffer.trim_end_matches('\n').to_string();
Ok(Some(ValueOwned::Concrete(ConcreteValue::String(buffer))))
}
Err(error) => Err(VmError::NativeFunction(NativeFunctionError::Io {
error: error.kind(),
position: vm.current_position(),
@ -78,7 +88,7 @@ pub fn read_line(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmE
}
}
pub fn write(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError> {
pub fn write<'a>(vm: &'a Vm<'a>, instruction: Instruction) -> Result<Option<ValueOwned>, VmError> {
let to_register = instruction.a();
let argument_count = instruction.c();
let mut stdout = stdout();
@ -96,7 +106,8 @@ pub fn write(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError
stdout.write(b" ").map_err(map_err)?;
}
let argument_string = vm.open_register(argument_index)?.to_string();
let argument = vm.open_register(argument_index)?;
let argument_string = argument.display(vm)?;
stdout
.write_all(argument_string.as_bytes())
@ -106,7 +117,10 @@ pub fn write(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError
Ok(None)
}
pub fn write_line(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, VmError> {
pub fn write_line<'a>(
vm: &'a Vm<'a>,
instruction: Instruction,
) -> Result<Option<ValueOwned>, VmError> {
let to_register = instruction.a();
let argument_count = instruction.c();
let mut stdout = stdout();
@ -124,7 +138,8 @@ pub fn write_line(vm: &Vm, instruction: Instruction) -> Result<Option<Value>, Vm
stdout.write(b" ").map_err(map_err)?;
}
let argument_string = vm.open_register(argument_index)?.to_string();
let argument = vm.open_register(argument_index)?;
let argument_string = argument.display(vm)?;
stdout
.write_all(argument_string.as_bytes())

4
dust-lang/src/native_function/mod.rs
View File

@ -12,7 +12,7 @@ use std::{
use serde::{Deserialize, Serialize};
use crate::{AnnotatedError, FunctionType, Instruction, Span, Type, Value, Vm, VmError};
use crate::{AnnotatedError, FunctionType, Instruction, Span, Type, ValueOwned, Vm, VmError};
macro_rules! define_native_function {
($(($name:ident, $byte:literal, $str:expr, $type:expr, $function:expr)),*) => {
@ -31,7 +31,7 @@ macro_rules! define_native_function {
&self,
vm: &mut Vm,
instruction: Instruction,
) -> Result<Option<Value>, VmError> {
) -> Result<Option<ValueOwned>, VmError> {
match self {
$(
NativeFunction::$name => $function(vm, instruction),

89
dust-lang/src/value/abstract_value.rs Normal file
View File

@ -0,0 +1,89 @@
use std::fmt::{self, Display, Formatter};
use crate::{vm::Pointer, ConcreteValue, Type, Vm, VmError};
#[derive(Debug, PartialEq, PartialOrd)]
pub enum AbstractValue {
FunctionSelf,
List {
items: Vec<Pointer>,
item_type: Type,
},
}
impl AbstractValue {
pub fn to_concrete_owned(&self, vm: &Vm) -> Result<ConcreteValue, VmError> {
match self {
AbstractValue::FunctionSelf => Ok(ConcreteValue::Function(vm.chunk().clone())),
AbstractValue::List { items, .. } => {
let mut resolved_items = Vec::with_capacity(items.len());
for pointer in items {
let resolved_item = vm.follow_pointer(*pointer)?.to_concrete_owned(vm)?;
resolved_items.push(resolved_item);
}
Ok(ConcreteValue::List(resolved_items))
}
}
}
pub fn display(&self, vm: &Vm) -> Result<String, VmError> {
match self {
AbstractValue::FunctionSelf => Ok("self".to_string()),
AbstractValue::List { items, .. } => {
let mut display = "[".to_string();
for (i, item) in items.iter().enumerate() {
if i > 0 {
display.push_str(", ");
}
let item_display = vm.follow_pointer(*item)?.display(vm)?;
display.push_str(&item_display);
}
display.push_str("]");
Ok(display)
}
}
}
}
impl Clone for AbstractValue {
fn clone(&self) -> Self {
log::trace!("Cloning abstract value {:?}", self);
match self {
AbstractValue::FunctionSelf => AbstractValue::FunctionSelf,
AbstractValue::List { items, item_type } => AbstractValue::List {
items: items.clone(),
item_type: item_type.clone(),
},
}
}
}
impl Display for AbstractValue {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
match self {
AbstractValue::FunctionSelf => write!(f, "self"),
AbstractValue::List { items, .. } => {
write!(f, "[")?;
for (i, item) in items.iter().enumerate() {
if i > 0 {
write!(f, ", ")?;
}
write!(f, "{}", item)?;
}
write!(f, "]")
}
}
}
}

295
dust-lang/src/value/concrete_value.rs Normal file
View File

@ -0,0 +1,295 @@
use std::fmt::{self, Display, Formatter};
use serde::{Deserialize, Serialize};
use crate::{Chunk, Type, ValueError};
use super::RangeValue;
#[derive(Debug, PartialEq, PartialOrd, Serialize, Deserialize)]
pub enum ConcreteValue {
Boolean(bool),
Byte(u8),
Character(char),
Float(f64),
Function(Chunk),
Integer(i64),
List(Vec<ConcreteValue>),
Range(RangeValue),
String(String),
}
impl ConcreteValue {
pub fn boolean(value: bool) -> Self {
ConcreteValue::Boolean(value)
}
pub fn byte(value: u8) -> Self {
ConcreteValue::Byte(value)
}
pub fn character(value: char) -> Self {
ConcreteValue::Character(value)
}
pub fn float(value: f64) -> Self {
ConcreteValue::Float(value)
}
pub fn function(chunk: Chunk) -> Self {
ConcreteValue::Function(chunk)
}
pub fn integer<T: Into<i64>>(into_i64: T) -> Self {
ConcreteValue::Integer(into_i64.into())
}
pub fn list<T: Into<Vec<ConcreteValue>>>(into_list: T) -> Self {
ConcreteValue::List(into_list.into())
}
pub fn range(range: RangeValue) -> Self {
ConcreteValue::Range(range)
}
pub fn string<T: ToString>(to_string: T) -> Self {
ConcreteValue::String(to_string.to_string())
}
pub fn as_string(&self) -> Option<&String> {
if let ConcreteValue::String(string) = self {
Some(string)
} else {
None
}
}
pub fn r#type(&self) -> Type {
match self {
ConcreteValue::Boolean(_) => Type::Boolean,
ConcreteValue::Byte(_) => Type::Byte,
ConcreteValue::Character(_) => Type::Character,
ConcreteValue::Float(_) => Type::Float,
ConcreteValue::Function(chunk) => Type::Function(chunk.r#type().clone()),
ConcreteValue::Integer(_) => Type::Integer,
ConcreteValue::List(list) => {
let item_type = list.first().map_or(Type::Any, |item| item.r#type());
Type::List {
item_type: Box::new(item_type),
length: list.len(),
}
}
ConcreteValue::Range(range) => range.r#type(),
ConcreteValue::String(string) => Type::String {
length: Some(string.len()),
},
}
}
pub fn add(&self, other: &Self) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let sum = match (self, other) {
(Byte(left), Byte(right)) => ConcreteValue::byte(left.saturating_add(*right)),
(Float(left), Float(right)) => ConcreteValue::float(*left + *right),
(Integer(left), Integer(right)) => ConcreteValue::integer(left.saturating_add(*right)),
(String(left), String(right)) => ConcreteValue::string(format!("{}{}", left, right)),
_ => return Err(ValueError::CannotAdd(self.clone(), other.clone())),
};
Ok(sum)
}
pub fn subtract(&self, other: &Self) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let difference = match (self, other) {
(Byte(left), Byte(right)) => ConcreteValue::byte(left.saturating_sub(*right)),
(Float(left), Float(right)) => ConcreteValue::float(left - right),
(Integer(left), Integer(right)) => ConcreteValue::integer(left.saturating_sub(*right)),
_ => return Err(ValueError::CannotSubtract(self.clone(), other.clone())),
};
Ok(difference)
}
pub fn multiply(&self, other: &Self) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let product = match (self, other) {
(Byte(left), Byte(right)) => ConcreteValue::byte(left.saturating_mul(*right)),
(Float(left), Float(right)) => ConcreteValue::float(left * right),
(Integer(left), Integer(right)) => ConcreteValue::integer(left.saturating_mul(*right)),
_ => return Err(ValueError::CannotMultiply(self.clone(), other.clone())),
};
Ok(product)
}
pub fn divide(&self, other: &Self) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let quotient = match (self, other) {
(Byte(left), Byte(right)) => ConcreteValue::byte(left.saturating_div(*right)),
(Float(left), Float(right)) => ConcreteValue::float(left / right),
(Integer(left), Integer(right)) => ConcreteValue::integer(left.saturating_div(*right)),
_ => return Err(ValueError::CannotMultiply(self.clone(), other.clone())),
};
Ok(quotient)
}
pub fn modulo(&self, other: &Self) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let product = match (self, other) {
(Byte(left), Byte(right)) => ConcreteValue::byte(left.wrapping_rem(*right)),
(Float(left), Float(right)) => ConcreteValue::float(left % right),
(Integer(left), Integer(right)) => {
ConcreteValue::integer(left.wrapping_rem_euclid(*right))
}
_ => return Err(ValueError::CannotMultiply(self.clone(), other.clone())),
};
Ok(product)
}
pub fn negate(&self) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let negated = match self {
Boolean(value) => ConcreteValue::boolean(!value),
Byte(value) => ConcreteValue::byte(value.wrapping_neg()),
Float(value) => ConcreteValue::float(-value),
Integer(value) => ConcreteValue::integer(value.wrapping_neg()),
_ => return Err(ValueError::CannotNegate(self.clone())),
};
Ok(negated)
}
pub fn not(&self) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let not = match self {
Boolean(value) => ConcreteValue::boolean(!value),
_ => return Err(ValueError::CannotNot(self.clone())),
};
Ok(not)
}
pub fn equal(&self, other: &ConcreteValue) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let equal = match (self, other) {
(Boolean(left), Boolean(right)) => ConcreteValue::boolean(left == right),
(Byte(left), Byte(right)) => ConcreteValue::boolean(left == right),
(Character(left), Character(right)) => ConcreteValue::boolean(left == right),
(Float(left), Float(right)) => ConcreteValue::boolean(left == right),
(Function(left), Function(right)) => ConcreteValue::boolean(left == right),
(Integer(left), Integer(right)) => ConcreteValue::boolean(left == right),
(List(left), List(right)) => ConcreteValue::boolean(left == right),
(Range(left), Range(right)) => ConcreteValue::boolean(left == right),
(String(left), String(right)) => ConcreteValue::boolean(left == right),
_ => return Err(ValueError::CannotCompare(self.clone(), other.clone())),
};
Ok(equal)
}
pub fn less_than(&self, other: &ConcreteValue) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let less_than = match (self, other) {
(Boolean(left), Boolean(right)) => ConcreteValue::boolean(left < right),
(Byte(left), Byte(right)) => ConcreteValue::boolean(left < right),
(Character(left), Character(right)) => ConcreteValue::boolean(left < right),
(Float(left), Float(right)) => ConcreteValue::boolean(left < right),
(Function(left), Function(right)) => ConcreteValue::boolean(left < right),
(Integer(left), Integer(right)) => ConcreteValue::boolean(left < right),
(List(left), List(right)) => ConcreteValue::boolean(left < right),
(Range(left), Range(right)) => ConcreteValue::boolean(left < right),
(String(left), String(right)) => ConcreteValue::boolean(left < right),
_ => return Err(ValueError::CannotCompare(self.clone(), other.clone())),
};
Ok(less_than)
}
pub fn less_than_or_equal(&self, other: &ConcreteValue) -> Result<ConcreteValue, ValueError> {
use ConcreteValue::*;
let less_than_or_equal = match (self, other) {
(Boolean(left), Boolean(right)) => ConcreteValue::boolean(left <= right),
(Byte(left), Byte(right)) => ConcreteValue::boolean(left <= right),
(Character(left), Character(right)) => ConcreteValue::boolean(left <= right),
(Float(left), Float(right)) => ConcreteValue::boolean(left <= right),
(Function(left), Function(right)) => ConcreteValue::boolean(left <= right),
(Integer(left), Integer(right)) => ConcreteValue::boolean(left <= right),
(List(left), List(right)) => ConcreteValue::boolean(left <= right),
(Range(left), Range(right)) => ConcreteValue::boolean(left <= right),
(String(left), String(right)) => ConcreteValue::boolean(left <= right),
_ => return Err(ValueError::CannotCompare(self.clone(), other.clone())),
};
Ok(less_than_or_equal)
}
}
impl Clone for ConcreteValue {
fn clone(&self) -> Self {
log::trace!("Cloning concrete value {}", self);
match self {
ConcreteValue::Boolean(boolean) => ConcreteValue::Boolean(*boolean),
ConcreteValue::Byte(byte) => ConcreteValue::Byte(*byte),
ConcreteValue::Character(character) => ConcreteValue::Character(*character),
ConcreteValue::Float(float) => ConcreteValue::Float(*float),
ConcreteValue::Function(function) => ConcreteValue::Function(function.clone()),
ConcreteValue::Integer(integer) => ConcreteValue::Integer(*integer),
ConcreteValue::List(list) => ConcreteValue::List(list.clone()),
ConcreteValue::Range(range) => ConcreteValue::Range(*range),
ConcreteValue::String(string) => ConcreteValue::String(string.clone()),
}
}
}
impl Display for ConcreteValue {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
match self {
ConcreteValue::Boolean(boolean) => write!(f, "{boolean}"),
ConcreteValue::Byte(byte) => write!(f, "0x{byte:02x}"),
ConcreteValue::Character(character) => write!(f, "{character}"),
ConcreteValue::Float(float) => {
write!(f, "{float}")?;
if float.fract() == 0.0 {
write!(f, ".0")?;
}
Ok(())
}
ConcreteValue::Function(function) => write!(f, "{function}"),
ConcreteValue::Integer(integer) => write!(f, "{integer}"),
ConcreteValue::List(list) => {
write!(f, "[")?;
for (index, item) in list.iter().enumerate() {
if index > 0 {
write!(f, ", ")?;
}
write!(f, "{item}")?;
}
write!(f, "]")
}
ConcreteValue::Range(range_value) => {
write!(f, "{range_value}")
}
ConcreteValue::String(string) => write!(f, "{string}"),
}
}
}

325
dust-lang/src/value/mod.rs
View File

@ -1,312 +1,71 @@
//! Runtime values used by the VM.
mod range;
mod abstract_value;
mod concrete_value;
mod range_value;
pub use range::RangeValue;
pub use abstract_value::AbstractValue;
pub use concrete_value::ConcreteValue;
pub use range_value::RangeValue;
use std::fmt::{self, Debug, Display, Formatter};
use serde::{Deserialize, Serialize};
use crate::{Vm, VmError};
use crate::{Chunk, Type};
#[derive(Debug, PartialEq, PartialOrd, Serialize, Deserialize)]
pub enum Value {
Boolean(bool),
Byte(u8),
Character(char),
Float(f64),
Function(Chunk),
Integer(i64),
List(Vec<Value>),
Range(RangeValue),
String(String),
#[derive(Clone, Debug)]
pub enum ValueRef<'a> {
Abstract(&'a AbstractValue),
Concrete(&'a ConcreteValue),
}
impl Value {
pub fn boolean(value: bool) -> Self {
Value::Boolean(value)
}
pub fn byte(value: u8) -> Self {
Value::Byte(value)
}
pub fn character(value: char) -> Self {
Value::Character(value)
}
pub fn float(value: f64) -> Self {
Value::Float(value)
}
pub fn function(chunk: Chunk) -> Self {
Value::Function(chunk)
}
pub fn integer<T: Into<i64>>(into_i64: T) -> Self {
Value::Integer(into_i64.into())
}
pub fn list<T: Into<Vec<Value>>>(into_list: T) -> Self {
Value::List(into_list.into())
}
pub fn range(range: RangeValue) -> Self {
Value::Range(range)
}
pub fn string<T: ToString>(to_string: T) -> Self {
Value::String(to_string.to_string())
}
pub fn as_string(&self) -> Option<&String> {
if let Value::String(string) = self {
Some(string)
} else {
None
}
}
pub fn r#type(&self) -> Type {
impl ValueRef<'_> {
pub fn to_concrete_owned(&self, vm: &Vm) -> Result<ConcreteValue, VmError> {
match self {
Value::Boolean(_) => Type::Boolean,
Value::Byte(_) => Type::Byte,
Value::Character(_) => Type::Character,
Value::Float(_) => Type::Float,
Value::Function(chunk) => Type::Function(chunk.r#type().clone()),
Value::Integer(_) => Type::Integer,
Value::List(list) => {
let item_type = list.first().map_or(Type::Any, |item| item.r#type());
Type::List {
item_type: Box::new(item_type),
length: list.len(),
}
}
Value::Range(range) => range.r#type(),
Value::String(string) => Type::String {
length: Some(string.len()),
},
ValueRef::Abstract(abstract_value) => abstract_value.to_concrete_owned(vm),
ValueRef::Concrete(concrete_value) => Ok((*concrete_value).clone()),
}
}
pub fn add(&self, other: &Self) -> Result<Value, ValueError> {
use Value::*;
let sum = match (self, other) {
(Byte(left), Byte(right)) => Value::byte(left.saturating_add(*right)),
(Float(left), Float(right)) => Value::float(*left + *right),
(Integer(left), Integer(right)) => Value::integer(left.saturating_add(*right)),
(String(left), String(right)) => Value::string(format!("{}{}", left, right)),
_ => return Err(ValueError::CannotAdd(self.clone(), other.clone())),
};
Ok(sum)
}
pub fn subtract(&self, other: &Self) -> Result<Value, ValueError> {
use Value::*;
let difference = match (self, other) {
(Byte(left), Byte(right)) => Value::byte(left.saturating_sub(*right)),
(Float(left), Float(right)) => Value::float(left - right),
(Integer(left), Integer(right)) => Value::integer(left.saturating_sub(*right)),
_ => return Err(ValueError::CannotSubtract(self.clone(), other.clone())),
};
Ok(difference)
}
pub fn multiply(&self, other: &Self) -> Result<Value, ValueError> {
use Value::*;
let product = match (self, other) {
(Byte(left), Byte(right)) => Value::byte(left.saturating_mul(*right)),
(Float(left), Float(right)) => Value::float(left * right),
(Integer(left), Integer(right)) => Value::integer(left.saturating_mul(*right)),
_ => return Err(ValueError::CannotMultiply(self.clone(), other.clone())),
};
Ok(product)
}
pub fn divide(&self, other: &Self) -> Result<Value, ValueError> {
use Value::*;
let quotient = match (self, other) {
(Byte(left), Byte(right)) => Value::byte(left.saturating_div(*right)),
(Float(left), Float(right)) => Value::float(left / right),
(Integer(left), Integer(right)) => Value::integer(left.saturating_div(*right)),
_ => return Err(ValueError::CannotMultiply(self.clone(), other.clone())),
};
Ok(quotient)
}
pub fn modulo(&self, other: &Self) -> Result<Value, ValueError> {
use Value::*;
let product = match (self, other) {
(Byte(left), Byte(right)) => Value::byte(left.wrapping_rem(*right)),
(Float(left), Float(right)) => Value::float(left % right),
(Integer(left), Integer(right)) => Value::integer(left.wrapping_rem_euclid(*right)),
_ => return Err(ValueError::CannotMultiply(self.clone(), other.clone())),
};
Ok(product)
}
pub fn negate(&self) -> Result<Value, ValueError> {
use Value::*;
let negated = match self {
Boolean(value) => Value::boolean(!value),
Byte(value) => Value::byte(value.wrapping_neg()),
Float(value) => Value::float(-value),
Integer(value) => Value::integer(value.wrapping_neg()),
_ => return Err(ValueError::CannotNegate(self.clone())),
};
Ok(negated)
}
pub fn not(&self) -> Result<Value, ValueError> {
use Value::*;
let not = match self {
Boolean(value) => Value::boolean(!value),
_ => return Err(ValueError::CannotNot(self.clone())),
};
Ok(not)
}
pub fn equal(&self, other: &Value) -> Result<Value, ValueError> {
use Value::*;
let equal = match (self, other) {
(Boolean(left), Boolean(right)) => Value::boolean(left == right),
(Byte(left), Byte(right)) => Value::boolean(left == right),
(Character(left), Character(right)) => Value::boolean(left == right),
(Float(left), Float(right)) => Value::boolean(left == right),
(Function(left), Function(right)) => Value::boolean(left == right),
(Integer(left), Integer(right)) => Value::boolean(left == right),
(List(left), List(right)) => Value::boolean(left == right),
(Range(left), Range(right)) => Value::boolean(left == right),
(String(left), String(right)) => Value::boolean(left == right),
_ => return Err(ValueError::CannotCompare(self.clone(), other.clone())),
};
Ok(equal)
}
pub fn less_than(&self, other: &Value) -> Result<Value, ValueError> {
use Value::*;
let less_than = match (self, other) {
(Boolean(left), Boolean(right)) => Value::boolean(left < right),
(Byte(left), Byte(right)) => Value::boolean(left < right),
(Character(left), Character(right)) => Value::boolean(left < right),
(Float(left), Float(right)) => Value::boolean(left < right),
(Function(left), Function(right)) => Value::boolean(left < right),
(Integer(left), Integer(right)) => Value::boolean(left < right),
(List(left), List(right)) => Value::boolean(left < right),
(Range(left), Range(right)) => Value::boolean(left < right),
(String(left), String(right)) => Value::boolean(left < right),
_ => return Err(ValueError::CannotCompare(self.clone(), other.clone())),
};
Ok(less_than)
}
pub fn less_than_or_equal(&self, other: &Value) -> Result<Value, ValueError> {
use Value::*;
let less_than_or_equal = match (self, other) {
(Boolean(left), Boolean(right)) => Value::boolean(left <= right),
(Byte(left), Byte(right)) => Value::boolean(left <= right),
(Character(left), Character(right)) => Value::boolean(left <= right),
(Float(left), Float(right)) => Value::boolean(left <= right),
(Function(left), Function(right)) => Value::boolean(left <= right),
(Integer(left), Integer(right)) => Value::boolean(left <= right),
(List(left), List(right)) => Value::boolean(left <= right),
(Range(left), Range(right)) => Value::boolean(left <= right),
(String(left), String(right)) => Value::boolean(left <= right),
_ => return Err(ValueError::CannotCompare(self.clone(), other.clone())),
};
Ok(less_than_or_equal)
}
}
impl Clone for Value {
fn clone(&self) -> Self {
log::trace!("Cloning concrete value {}", self);
pub fn display(&self, vm: &Vm) -> Result<String, VmError> {
match self {
Value::Boolean(boolean) => Value::Boolean(*boolean),
Value::Byte(byte) => Value::Byte(*byte),
Value::Character(character) => Value::Character(*character),
Value::Float(float) => Value::Float(*float),
Value::Function(function) => Value::Function(function.clone()),
Value::Integer(integer) => Value::Integer(*integer),
Value::List(list) => Value::List(list.clone()),
Value::Range(range) => Value::Range(*range),
Value::String(string) => Value::String(string.clone()),
ValueRef::Abstract(abstract_value) => abstract_value.display(vm),
ValueRef::Concrete(concrete_value) => Ok(concrete_value.to_string()),
}
}
}
impl Display for Value {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
pub enum ValueOwned {
Abstract(AbstractValue),
Concrete(ConcreteValue),
}
impl ValueOwned {
pub fn to_concrete_owned(&self, vm: &Vm) -> Result<ConcreteValue, VmError> {
match self {
Value::Boolean(boolean) => write!(f, "{boolean}"),
Value::Byte(byte) => write!(f, "0x{byte:02x}"),
Value::Character(character) => write!(f, "{character}"),
Value::Float(float) => {
write!(f, "{float}")?;
if float.fract() == 0.0 {
write!(f, ".0")?;
ValueOwned::Abstract(abstract_value) => abstract_value.to_concrete_owned(vm),
ValueOwned::Concrete(concrete_value) => Ok(concrete_value.clone()),
}
}
Ok(())
}
Value::Function(function) => write!(f, "{function}"),
Value::Integer(integer) => write!(f, "{integer}"),
Value::List(list) => {
write!(f, "[")?;
for (index, element) in list.iter().enumerate() {
if index > 0 {
write!(f, ", ")?;
}
write!(f, "{element}")?;
}
write!(f, "]")
}
Value::Range(range_value) => {
write!(f, "{range_value}")
}
Value::String(string) => write!(f, "{string}"),
pub fn display(&self, vm: &Vm) -> Result<String, VmError> {
match self {
ValueOwned::Abstract(abstract_value) => abstract_value.display(vm),
ValueOwned::Concrete(concrete_value) => Ok(concrete_value.to_string()),
}
}
}
#[derive(Clone, Debug, PartialEq)]
pub enum ValueError {
CannotAdd(Value, Value),
CannotAnd(Value, Value),
CannotCompare(Value, Value),
CannotDivide(Value, Value),
CannotModulo(Value, Value),
CannotMultiply(Value, Value),
CannotNegate(Value),
CannotNot(Value),
CannotSubtract(Value, Value),
CannotOr(Value, Value),
CannotAdd(ConcreteValue, ConcreteValue),
CannotAnd(ConcreteValue, ConcreteValue),
CannotCompare(ConcreteValue, ConcreteValue),
CannotDivide(ConcreteValue, ConcreteValue),
CannotModulo(ConcreteValue, ConcreteValue),
CannotMultiply(ConcreteValue, ConcreteValue),
CannotNegate(ConcreteValue),
CannotNot(ConcreteValue),
CannotSubtract(ConcreteValue, ConcreteValue),
CannotOr(ConcreteValue, ConcreteValue),
}
impl Display for ValueError {

0
dust-lang/src/value/range.rs → dust-lang/src/value/range_value.rs
View File

192
dust-lang/src/vm.rs
View File

@ -3,14 +3,16 @@ use std::{
cmp::Ordering,
collections::HashMap,
fmt::{self, Display, Formatter},
io,
};
use crate::{
compile, value::Value, AnnotatedError, Chunk, ChunkError, DustError, Instruction,
NativeFunction, NativeFunctionError, Operation, Span, Type, ValueError,
compile, AbstractValue, AnnotatedError, Chunk, ChunkError, ConcreteValue, DustError,
Instruction, NativeFunction, NativeFunctionError, Operation, Span, Type, ValueError,
ValueOwned, ValueRef,
};
pub fn run(source: &str) -> Result<Option<Value>, DustError> {
pub fn run(source: &str) -> Result<Option<ConcreteValue>, DustError> {
let chunk = compile(source)?;
let has_return_value = *chunk.r#type().return_type != Type::None;
let mut vm = Vm::new(&chunk, None);
@ -65,11 +67,15 @@ impl<'a> Vm<'a> {
}
}
pub fn chunk(&self) -> &Chunk {
self.chunk
}
pub fn current_position(&self) -> Span {
self.current_position
}
pub fn run(&mut self) -> Result<(), VmError> {
pub fn run(&mut self) -> Result<Option<ValueRef>, VmError> {
while let Ok(instruction) = self.read() {
log::info!(
"{} | {} | {} | {}",
@ -111,9 +117,9 @@ impl<'a> Vm<'a> {
let to_register = instruction.a();
let boolean = instruction.b_as_boolean();
let jump = instruction.c_as_boolean();
let boolean = Value::boolean(boolean);
let boolean = ConcreteValue::boolean(boolean);
self.set_register(to_register, Register::Value(boolean))?;
self.set_register(to_register, Register::ConcreteValue(boolean))?;
if jump {
self.ip += 1;
@ -195,7 +201,7 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
self.set_register(to_register, Register::Value(sum))?;
self.set_register(to_register, Register::ConcreteValue(sum))?;
}
Operation::Subtract => {
let to_register = instruction.a();
@ -205,7 +211,7 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
self.set_register(to_register, Register::Value(difference))?;
self.set_register(to_register, Register::ConcreteValue(difference))?;
}
Operation::Multiply => {
let to_register = instruction.a();
@ -215,7 +221,7 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
self.set_register(to_register, Register::Value(product))?;
self.set_register(to_register, Register::ConcreteValue(product))?;
}
Operation::Divide => {
let to_register = instruction.a();
@ -225,7 +231,7 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
self.set_register(to_register, Register::Value(quotient))?;
self.set_register(to_register, Register::ConcreteValue(quotient))?;
}
Operation::Modulo => {
let to_register = instruction.a();
@ -235,17 +241,18 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
self.set_register(to_register, Register::Value(remainder))?;
self.set_register(to_register, Register::ConcreteValue(remainder))?;
}
Operation::Test => {
let register = instruction.a();
let test_value = instruction.c_as_boolean();
let value = self.open_register(register)?;
let boolean = if let Value::Boolean(boolean) = value {
let boolean = if let ValueRef::Concrete(ConcreteValue::Boolean(boolean)) = value
{
*boolean
} else {
return Err(VmError::ExpectedBoolean {
found: value.clone(),
found: value.to_concrete_owned(self)?,
position: self.current_position,
});
};
@ -267,7 +274,7 @@ impl<'a> Vm<'a> {
error,
position: self.current_position,
})?;
let is_equal = if let Value::Boolean(boolean) = equal_result {
let is_equal = if let ConcreteValue::Boolean(boolean) = equal_result {
boolean
} else {
return Err(VmError::ExpectedBoolean {
@ -296,7 +303,7 @@ impl<'a> Vm<'a> {
error,
position: self.current_position,
})?;
let is_less_than = if let Value::Boolean(boolean) = less_result {
let is_less_than = if let ConcreteValue::Boolean(boolean) = less_result {
boolean
} else {
return Err(VmError::ExpectedBoolean {
@ -328,7 +335,7 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
let is_less_than_or_equal =
if let Value::Boolean(boolean) = less_or_equal_result {
if let ConcreteValue::Boolean(boolean) = less_or_equal_result {
boolean
} else {
return Err(VmError::ExpectedBoolean {
@ -352,7 +359,7 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
self.set_register(instruction.a(), Register::Value(negated))?;
self.set_register(instruction.a(), Register::ConcreteValue(negated))?;
}
Operation::Not => {
let value = self.get_argument(instruction.b(), instruction.b_is_constant())?;
@ -361,7 +368,7 @@ impl<'a> Vm<'a> {
position: self.current_position,
})?;
self.set_register(instruction.a(), Register::Value(not))?;
self.set_register(instruction.a(), Register::ConcreteValue(not))?;
}
Operation::Jump => self.jump(instruction),
Operation::Call => {
@ -369,11 +376,13 @@ impl<'a> Vm<'a> {
let function_register = instruction.b();
let argument_count = instruction.c();
let value = self.open_register(function_register)?;
let chunk = if let Value::Function(chunk) = value {
let chunk = if let ValueRef::Concrete(ConcreteValue::Function(chunk)) = value {
chunk
} else if let ValueRef::Abstract(AbstractValue::FunctionSelf) = value {
self.chunk
} else {
return Err(VmError::ExpectedFunction {
found: value.clone(),
found: value.to_concrete_owned(self)?,
position: self.current_position,
});
};
@ -406,28 +415,32 @@ impl<'a> Vm<'a> {
let native_function = NativeFunction::from(instruction.b());
let return_value = native_function.call(self, instruction)?;
if let Some(concrete_value) = return_value {
if let Some(value) = return_value {
let to_register = instruction.a();
self.set_register(to_register, Register::Value(concrete_value))?;
let register = match value {
ValueOwned::Abstract(abstract_value) => {
Register::AbstractValue(abstract_value)
}
ValueOwned::Concrete(concrete_value) => {
Register::ConcreteValue(concrete_value)
}
};
self.set_register(to_register, register)?;
}
}
Operation::Return => {
let should_return_value = instruction.b_as_boolean();
if !should_return_value {
return Ok(());
return Ok(None);
}
return if let Some(register_index) = self.last_assigned_register {
let top_of_stack = self.stack.len() as u8 - 1;
let value_ref = self.open_register(register_index)?;
if register_index != top_of_stack {
self.stack
.push(Register::Pointer(Pointer::Stack(register_index)));
}
Ok(())
Ok(Some(value_ref))
} else {
Err(VmError::StackUnderflow {
position: self.current_position,
@ -437,13 +450,17 @@ impl<'a> Vm<'a> {
}
}
Ok(())
Ok(None)
}
fn resolve_pointer(&self, pointer: Pointer) -> Result<&Value, VmError> {
pub(crate) fn follow_pointer(&self, pointer: Pointer) -> Result<ValueRef, VmError> {
match pointer {
Pointer::Stack(register_index) => self.open_register(register_index),
Pointer::Constant(constant_index) => self.get_constant(constant_index),
Pointer::Constant(constant_index) => {
let constant = self.get_constant(constant_index)?;
Ok(ValueRef::Concrete(constant))
}
Pointer::ParentStack(register_index) => {
let parent = self
.parent
@ -461,13 +478,14 @@ impl<'a> Vm<'a> {
.ok_or_else(|| VmError::ExpectedParent {
position: self.current_position,
})?;
let constant = parent.get_constant(constant_index)?;
parent.get_constant(constant_index)
Ok(ValueRef::Concrete(constant))
}
}
}
pub(crate) fn open_register(&self, register_index: u8) -> Result<&Value, VmError> {
pub(crate) fn open_register(&self, register_index: u8) -> Result<ValueRef, VmError> {
let register_index = register_index as usize;
let register =
self.stack
@ -480,8 +498,9 @@ impl<'a> Vm<'a> {
log::trace!("Open R{register_index} to {register}");
match register {
Register::Value(value) => Ok(value),
Register::Pointer(pointer) => self.resolve_pointer(*pointer),
Register::ConcreteValue(value) => Ok(ValueRef::Concrete(value)),
Register::Pointer(pointer) => self.follow_pointer(*pointer),
Register::AbstractValue(abstract_value) => Ok(ValueRef::Abstract(abstract_value)),
Register::Empty => Err(VmError::EmptyRegister {
index: register_index,
position: self.current_position,
@ -489,13 +508,13 @@ impl<'a> Vm<'a> {
}
}
fn take_top_of_stack_as_value(&mut self) -> Result<Value, VmError> {
fn take_top_of_stack_as_value(&mut self) -> Result<ConcreteValue, VmError> {
let top_of_stack = self.stack.pop().ok_or(VmError::StackUnderflow {
position: self.current_position,
})?;
match top_of_stack {
Register::Value(value) => Ok(value),
Register::ConcreteValue(value) => Ok(value),
_ => Err(VmError::ExpectedValue {
found: top_of_stack,
position: self.current_position,
@ -516,18 +535,29 @@ impl<'a> Vm<'a> {
}
/// DRY helper to get a constant or register values
fn get_argument(&self, index: u8, is_constant: bool) -> Result<&Value, VmError> {
fn get_argument(&self, index: u8, is_constant: bool) -> Result<&ConcreteValue, VmError> {
let argument = if is_constant {
self.get_constant(index)?
} else {
self.open_register(index)?
match self.open_register(index)? {
ValueRef::Concrete(concrete_value) => concrete_value,
ValueRef::Abstract(abstract_value) => {
return Err(VmError::ExpectedConcreteValue {
found: abstract_value.clone(),
position: self.current_position,
})
}
}
};
Ok(argument)
}
/// DRY helper to get two arguments for binary operations
fn get_arguments(&self, instruction: Instruction) -> Result<(&Value, &Value), VmError> {
fn get_arguments(
&self,
instruction: Instruction,
) -> Result<(&ConcreteValue, &ConcreteValue), VmError> {
let left = self.get_argument(instruction.b(), instruction.b_is_constant())?;
let right = self.get_argument(instruction.c(), instruction.c_is_constant())?;
@ -579,7 +609,7 @@ impl<'a> Vm<'a> {
}
}
fn get_constant(&self, index: u8) -> Result<&Value, VmError> {
fn get_constant(&self, index: u8) -> Result<&ConcreteValue, VmError> {
self.chunk
.get_constant(index)
.map_err(|error| VmError::Chunk {
@ -589,7 +619,7 @@ impl<'a> Vm<'a> {
}
fn read(&mut self) -> Result<Instruction, VmError> {
let (instruction, position) = *self.get_instruction(self.ip)?;
let (instruction, position) = self.get_instruction(self.ip)?;
self.ip += 1;
self.current_position = position;
@ -597,9 +627,10 @@ impl<'a> Vm<'a> {
Ok(instruction)
}
fn get_instruction(&self, index: usize) -> Result<&(Instruction, Span), VmError> {
fn get_instruction(&self, index: usize) -> Result<(Instruction, Span), VmError> {
self.chunk
.get_instruction(index)
.copied()
.map_err(|error| VmError::Chunk {
error,
position: self.current_position,
@ -618,16 +649,18 @@ impl<'a> Vm<'a> {
#[derive(Clone, Debug, PartialEq)]
pub enum Register {
Empty,
Value(Value),
ConcreteValue(ConcreteValue),
Pointer(Pointer),
AbstractValue(AbstractValue),
}
impl Display for Register {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
match self {
Self::Empty => write!(f, "empty"),
Self::Value(value) => write!(f, "{}", value),
Self::ConcreteValue(value) => write!(f, "{}", value),
Self::Pointer(pointer) => write!(f, "{}", pointer),
Self::AbstractValue(value) => write!(f, "{}", value),
}
}
}
@ -654,26 +687,64 @@ impl Display for Pointer {
#[derive(Clone, Debug, PartialEq)]
pub enum VmError {
// Stack errors
StackOverflow { position: Span },
StackUnderflow { position: Span },
StackOverflow {
position: Span,
},
StackUnderflow {
position: Span,
},
// Register errors
EmptyRegister { index: usize, position: Span },
ExpectedValue { found: Register, position: Span },
RegisterIndexOutOfBounds { index: usize, position: Span },
EmptyRegister {
index: usize,
position: Span,
},
ExpectedConcreteValue {
found: AbstractValue,
position: Span,
},
ExpectedValue {
found: Register,
position: Span,
},
RegisterIndexOutOfBounds {
index: usize,
position: Span,
},
// Local errors
UndefinedLocal { local_index: u8, position: Span },
UndefinedLocal {
local_index: u8,
position: Span,
},
// Execution errors
ExpectedBoolean { found: Value, position: Span },
ExpectedFunction { found: Value, position: Span },
ExpectedParent { position: Span },
ExpectedBoolean {
found: ConcreteValue,
position: Span,
},
ExpectedFunction {
found: ConcreteValue,
position: Span,
},
ExpectedParent {
position: Span,
},
ValueDisplay {
error: io::ErrorKind,
position: Span,
},
// Wrappers for foreign errors
Chunk { error: ChunkError, position: Span },
Chunk {
error: ChunkError,
position: Span,
},
NativeFunction(NativeFunctionError),
Value { error: ValueError, position: Span },
Value {
error: ValueError,
position: Span,
},
}
impl AnnotatedError for VmError {
@ -686,6 +757,7 @@ impl AnnotatedError for VmError {
Self::Chunk { .. } => "Chunk error",
Self::EmptyRegister { .. } => "Empty register",
Self::ExpectedBoolean { .. } => "Expected boolean",
Self::ExpectedConcreteValue { .. } => "Expected concrete value",
Self::ExpectedFunction { .. } => "Expected function",
Self::ExpectedParent { .. } => "Expected parent",
Self::ExpectedValue { .. } => "Expected value",
@ -695,6 +767,7 @@ impl AnnotatedError for VmError {
Self::StackUnderflow { .. } => "Stack underflow",
Self::UndefinedLocal { .. } => "Undefined local",
Self::Value { .. } => "Value error",
Self::ValueDisplay { .. } => "Value display error",
}
}
@ -709,6 +782,7 @@ impl AnnotatedError for VmError {
}
Self::NativeFunction(error) => error.details(),
Self::Value { error, .. } => Some(error.to_string()),
Self::ValueDisplay { error, .. } => Some(error.to_string() + " while displaying value"),
_ => None,
}
}
@ -718,6 +792,7 @@ impl AnnotatedError for VmError {
Self::Chunk { position, .. } => *position,
Self::EmptyRegister { position, .. } => *position,
Self::ExpectedBoolean { position, .. } => *position,
Self::ExpectedConcreteValue { position, .. } => *position,
Self::ExpectedFunction { position, .. } => *position,
Self::ExpectedParent { position } => *position,
Self::ExpectedValue { position, .. } => *position,
@ -727,6 +802,7 @@ impl AnnotatedError for VmError {
Self::StackUnderflow { position } => *position,
Self::UndefinedLocal { position, .. } => *position,
Self::Value { position, .. } => *position,
Self::ValueDisplay { position, .. } => *position,
}
}
}