diff options
Diffstat (limited to 'users/tazjin/rlox/src/bytecode/vm.rs')
| -rw-r--r-- | users/tazjin/rlox/src/bytecode/vm.rs | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/users/tazjin/rlox/src/bytecode/vm.rs b/users/tazjin/rlox/src/bytecode/vm.rs index 9161bdfe53b8..53431a083785 100644 --- a/users/tazjin/rlox/src/bytecode/vm.rs +++ b/users/tazjin/rlox/src/bytecode/vm.rs @@ -1,3 +1,5 @@ +use std::collections::HashMap; + use super::chunk; use super::errors::*; use super::interner::Interner; @@ -14,6 +16,8 @@ pub struct VM { stack: Vec<Value>, strings: Interner, + globals: HashMap<LoxString, Value>, + // Operations that consume values from the stack without pushing // anything leave their last value in this slot, which makes it // possible to return values from interpreters that ran code which @@ -157,6 +161,15 @@ impl VM { OpCode::OpPop => { self.last_drop = Some(self.pop()); } + + OpCode::OpDefineGlobal(name_idx) => { + let name = self.chunk.constant(*name_idx); + with_type!(self, name, Value::String(name), { + let name = name.clone(); + let val = self.pop(); + self.globals.insert(name, val); + }); + } } #[cfg(feature = "disassemble")] @@ -197,6 +210,7 @@ pub fn interpret(strings: Interner, chunk: chunk::Chunk) -> LoxResult<Value> { let mut vm = VM { chunk, strings, + globals: HashMap::new(), ip: 0, stack: vec![], last_drop: None, |