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