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feat(tazjin/rlox): Implement simple conditionals

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... basically just optional blocks (no else).

Change-Id: If091c6b8fdeb6c13a5f3dd284d0a9a87f9f4228d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3739
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
This commit is contained in:
Vincent Ambo 2021-10-21 11:00:33 +02:00 • committed by tazjin
parent d57e43e161
commit 670662a360
4 changed files with 84 additions and 16 deletions
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7
users/tazjin/rlox/src/bytecode/opcode.rs
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@ -7,6 +7,9 @@ pub struct StackIdx(pub usize);
#[derive(Clone, Copy, Debug)]
pub struct CodeIdx(pub usize);
#[derive(Clone, Copy, Debug)]
pub struct CodeOffset(pub usize);
#[derive(Debug)]
pub enum OpCode {
/// Push a constant onto the stack.
@ -45,4 +48,8 @@ pub enum OpCode {
OpSetGlobal(ConstantIdx),
OpGetLocal(StackIdx),
OpSetLocal(StackIdx),
// Control flow
OpJumpPlaceholder(bool),
OpJumpIfFalse(CodeOffset),
}