2.4 KiB
2.4 KiB
zlox, a clox rewrite in Zig.
While reading Crafting Interpreters, after having rewrote the interpreter part in Rust (see rs-lox), I'm now attempting to write the bytecode compiler in Zig.
Progression
- 14 - Chunks of Bytecode
- 15 - A Virtual Machine
- 16 - Scanning on Demand
- 17 - Compiling Expressions
- 18 - Types of Values
- 19 - Strings
- 20 - Hash Tables
- 21 - Global Variables
- 22 - Local Variables
- 23 - Jumping Back and Forth
- 24 - Calls and Functions
- 25 - Closures
- 26 - Garbage Collection
- 27 - Classes and Instances
- 28 - Method and Initializers
- 29 - Superclasses
- 30 - Optimization (without NaN boxing/NaN tagging)
Build & run
There is a justfile to help building & running:
$ just build
$ ls -l zig-out/bin/zlox
-rwxr-xr-x 1 mycroft mycroft 2823296 Aug 25 15:36 zig-out/bin/zlox
$ set -x TRACE
$ just run
zig build run
== Hash table count:0 capacity:0 ==
== End of hash table ==
zlox> print !(5 - 4 > 3 * 2 == !nil);
== code ==
0000 1 OP_CONSTANT 0 '5'
0002 | OP_CONSTANT 1 '4'
0004 | OP_SUBSTRACT
0005 | OP_CONSTANT 2 '3'
0007 | OP_CONSTANT 3 '2'
0009 | OP_MULTIPLY
000a | OP_GREATER
000b | OP_NIL
000c | OP_NOT
000d | OP_EQUAL
000e | OP_NOT
000f | OP_PRINT
== end of code ==
0000 1 OP_CONSTANT 0 '5'
[ 5 ]
0002 | OP_CONSTANT 1 '4'
[ 5 ][ 4 ]
0004 | OP_SUBSTRACT
[ 1 ]
0005 | OP_CONSTANT 2 '3'
[ 1 ][ 3 ]
0007 | OP_CONSTANT 3 '2'
[ 1 ][ 3 ][ 2 ]
0009 | OP_MULTIPLY
[ 1 ][ 6 ]
000a | OP_GREATER
[ false ]
000b | OP_NIL
[ false ][ nil ]
000c | OP_NOT
[ false ][ true ]
000d | OP_EQUAL
[ false ]
000e | OP_NOT
[ true ]
000f | OP_PRINT
true
0010 2 OP_RETURN
== Hash table count:0 capacity:0 ==
== End of hash table ==
zlox>