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@ -1,7 +1,10 @@
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use color_eyre::eyre::Result;
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use thiserror::Error;
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use crate::chunk::{Chunk, DisassembledInstruction, OpCode};
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use crate::{
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chunk::{Chunk, DisassembledInstruction, OpCode},
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value::Value,
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};
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use tracing::debug;
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#[derive(Error, Debug)]
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@ -15,11 +18,18 @@ pub enum InterpretError {
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pub struct VM {
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chunk: Chunk,
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ip: usize,
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stack: [Value; 256],
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stack_top: usize,
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}
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impl VM {
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pub fn new(chunk: Chunk) -> Self {
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Self { chunk, ip: 0 }
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Self {
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chunk,
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ip: 0,
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stack: [0.0; 256],
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stack_top: 0,
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}
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}
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pub fn interpret(&mut self) -> Result<()> {
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@ -37,4 +47,14 @@ impl VM {
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self.ip += 1;
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}
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}
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fn push(&mut self, value: Value) {
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self.stack[self.stack_top] = value;
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self.stack_top += 1;
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}
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fn pop(&mut self) -> Value {
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self.stack_top -= 1;
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self.stack[self.stack_top]
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}
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}
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