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authorGravatar zinc <zinc@downsta.ir> 2026-10-14 10:39:47 +0000
committerGravatar zinc <zinc@downsta.ir> 2026-10-14 10:39:47 +0000
commit54b8a8918bb63c98a8f58e823033232243647562 (patch)
treee0608f7dab1f568c22390262e5a6d39966519760 /src/compiler/analyzer.zc
parenttodo: handoff section with state, conventions, in-flight work and architectur... (diff)
zc: add the defer statement
defer expr; and defer { ... } register code that runs when the enclosing block ends: at the end of the block, and at return, break and continue that leave it. the tokens are kept at the defer and compiled again at each exit (block_close, body, kw_return, kw_break, kw_continue), newest first, before the block's variables are released, so the analyzer sees a deferred rt.free(p) as the transfer of p where it runs. names mean what they meant at the defer; values are read when it runs. return, break and continue inside a deferred statement are errors, reported once. works in unchecked code and closures (own base per function context).
Diffstat (limited to 'src/compiler/analyzer.zc')
-rw-r--r--src/compiler/analyzer.zc1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/compiler/analyzer.zc b/src/compiler/analyzer.zc
index 505ac09..8c63bdf 100644
--- a/src/compiler/analyzer.zc
+++ b/src/compiler/analyzer.zc
@@ -682,6 +682,7 @@ int local_hints(int from) {
// object is an error, not a free.
int block_close(int save) {
int i = save, k;
+ defer_run(fdepth, 1); // deferred statements of this block, before its variables go
af_close(save);
local_hints(save);
if (o3on) {