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feat: execute conditionals through typed IR

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Use typed singleton arrays for braceless arm blocks: &[statement] compiled but trapped under the Bro bootstrap.
This commit is contained in:
Valdemar Høgsvig Lorenzen
2026-10-09 23:43:44 +02:00
parent 0821b84bc3
commit 9932750e21
20 changed files with 1511 additions and 124 deletions
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source/interpreter/interpreter.hon
+45 -1
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@@ -26,6 +26,7 @@ GlobalState :: struct {
@hide:file
Frame :: struct {
function ir.FunctionId
block ir.BlockId
next_instruction usize = 0
destination ir.ValueId = ir.no_value
global ?usize = null
@@ -60,11 +61,21 @@ run proc(
while frames.items.len != 0 {
frame_index :: frames.items.len - 1
function :: &module.functions.items[usize(frames.items[frame_index].function)]
block :: &function.blocks.items[usize(function.entry)]
block :: &function.blocks.items[usize(frames.items[frame_index].block)]
instruction_index :: frames.items[frame_index].next_instruction
if instruction_index == block.instructions.items.len {
terminator :: block.terminator
if (terminator.kind == .trap) return Outcome{ trap = terminator.diagnostic }
if (terminator.kind == .jump or terminator.kind == .branch) {
target := terminator.target
if (terminator.kind == .branch) {
condition :: frames.items[frame_index].values[usize(terminator.value)]
if (!condition.data.boolean) target = terminator.alternative
}
frames.items[frame_index].block = target
frames.items[frame_index].next_instruction = 0
continue
}
value := ir.Value{}
if terminator.value != ir.no_value {
value = frames.items[frame_index].values[usize(terminator.value)]
@@ -169,6 +180,38 @@ run proc(
}
}
}
.equal, .not_equal, .less, .less_equal, .greater, .greater_equal: {
left :: frames.items[frame_index].values[usize(instruction.left)]
right :: frames.items[frame_index].values[usize(instruction.right)]
result := false
match left.type {
.int: result = match instruction.op {
.equal: left.data.integer == right.data.integer
.not_equal: left.data.integer != right.data.integer
.less: left.data.integer < right.data.integer
.less_equal: left.data.integer <= right.data.integer
.greater: left.data.integer > right.data.integer
.greater_equal: left.data.integer >= right.data.integer
else: unreachable
}
.float: result = match instruction.op {
.equal: left.data.real == right.data.real
.not_equal: left.data.real != right.data.real
.less: left.data.real < right.data.real
.less_equal: left.data.real <= right.data.real
.greater: left.data.real > right.data.real
.greater_equal: left.data.real >= right.data.real
else: unreachable
}
.bool: result = match instruction.op {
.equal: left.data.boolean == right.data.boolean
.not_equal: left.data.boolean != right.data.boolean
else: unreachable
}
else: unreachable
}
value = ir.Value{ type = .bool, data = ir.ValueData{ boolean = result } }
}
}
if instruction.destination != ir.no_value {
frames.items[frame_index].values[usize(instruction.destination)] = value
@@ -195,6 +238,7 @@ push_frame proc(
# typed IR assigns each temporary before use; only local slots need initialization flags.
try arraylist.append(frames, Frame{
function = function,
block = signature.entry,
destination = destination,
global = global,
locals = locals,