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bf: added notes regarding '{' and '<'.

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This commit is contained in:
Aryadev Chavali
2026-03-17 21:28:50 +00:00
parent 071fe2ff98
commit 4ba7d3c554
1 changed files with 4 additions and 0 deletions
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4
src/bf.c
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@@ -105,6 +105,8 @@ void program_execute(struct ProgramConcat *prg)
switch (opcode) switch (opcode)
{ {
case '<': case '<':
// NOTE: We're doing a safe subtraction here, but maybe we should
// terminate execution if subtraction will overflow?
ctx.head0 = SAFE_SUB(ctx.head0, 1); ctx.head0 = SAFE_SUB(ctx.head0, 1);
++ctx.ip; ++ctx.ip;
break; break;
@@ -113,6 +115,8 @@ void program_execute(struct ProgramConcat *prg)
++ctx.ip; ++ctx.ip;
break; break;
case '{': case '{':
// NOTE: We're doing a safe subtraction here, but maybe we should
// terminate execution if subtraction will overflow?
ctx.head1 = SAFE_SUB(ctx.head1, 1); ctx.head1 = SAFE_SUB(ctx.head1, 1);
++ctx.ip; ++ctx.ip;
break; break;