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route M5 ownership state through own.c

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정시원
2026-08-16 19:47:19 +09:00
parent 5c88872ef0
commit db51611225
1 changed files with 15 additions and 52 deletions
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fec/src/check.c
+15 -52
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@@ -1,4 +1,5 @@
#include "check.h"
#include "own.h"
#include <string.h>
#include <stdio.h>
@@ -49,50 +50,15 @@ static int known(FeType *t)
return t && t->kind != FE_TYPE_UNKNOWN && t->kind != FE_TYPE_ERROR;
}
static int is_copy_type(FeType *t)
{
unsigned i;
if (!t) return 1;
if (t->kind==FE_TYPE_OWNED) return 0;
if (t->kind==FE_TYPE_REF || t->kind==FE_TYPE_SLICE) return !t->ref_mut;
if (t->kind==FE_TYPE_ARRAY) return is_copy_type(t->elem);
if (t->kind==FE_TYPE_STRUCT) {
if (t->has_drop) return 0;
for (i=0;i<t->field_count;i++) if (!is_copy_type(t->fields[i].type)) return 0;
}
if (t->kind==FE_TYPE_ENUM)
for (i=0;i<t->variant_count;i++) {
unsigned j;
for (j=0;j<t->variants[i].field_count;j++)
if (!is_copy_type(t->variants[i].fields[j].type)) return 0;
}
return 1;
}
static void mark_moved(FeCheckerState *s, FeNode *n, FeType *t)
{
FeSym *sym;
if (!n || !t || is_copy_type(t)) return;
if(n->kind==FE_N_INDEX && t->kind==FE_TYPE_SLICE &&
(n->c || !n->b)) return;
if(n->kind==FE_N_MEMBER || n->kind==FE_N_INDEX) {
err(s->c,n->loc,
"cannot move a non-Copy value out of a projection; use mem.replace");
return;
}
if(n->kind!=FE_N_IDENT) return;
sym=find_symbol(s->scope,n->text ? n->text : "");
if (sym) {
if (s->defer_depth) {
if (sym->decl) sym->decl->flags |= 0x200U;
} else {
sym->moved=1;
/* Mark this consuming expression, not the declaration. Branches
may move conditionally; the declaration's runtime live flag
must remain available to guard cleanup on the other path. */
n->flags |= 0x100U;
}
}
FeSym *sym=0;
if (n && n->kind==FE_N_IDENT)
sym=find_symbol(s->scope,n->text ? n->text : "");
fe_own_mark_consumed(s->c->diags,
sym ? &sym->moved : 0,
sym ? sym->decl : 0,
n,t,s->defer_depth != 0);
}
static int compatible(FeType *want, FeType *got, FeNode *value)
@@ -244,7 +210,7 @@ static FeSym *add_symbol(FeCheckerState *s, FeScope *scope,
sym->fn = fn;
sym->mutable = mutable;
sym->initialized = initialized;
sym->moved = 0;
sym->moved = FE_OWN_AVAILABLE;
sym->decl = decl;
if (decl) {
decl->cname = cname;
@@ -329,9 +295,8 @@ static void flow_merge(FeFlowSlot *base, FeFlowSlot *left, FeFlowSlot *right,
{
unsigned i;
for (i=0; i<count; ++i) {
base[i].sym->moved = left[i].moved==1 && right[i].moved==1 ? 1 :
(left[i].moved || right[i].moved ? 2 : 0);
base[i].sym->initialized = left[i].initialized && right[i].initialized;
base[i].sym->moved=fe_own_merge_move(left[i].moved,right[i].moved);
base[i].sym->initialized=left[i].initialized && right[i].initialized;
}
}
@@ -579,8 +544,7 @@ static FeType *check_identifier(FeCheckerState *s, FeNode *n, int read)
}
n->cname = sym->cname;
n->sem_type = sym->type;
if (sym->moved == 1) err(s->c,n->loc,"use of moved value");
else if (sym->moved == 2) err(s->c,n->loc,"use of possibly moved value");
fe_own_check_use(s->c->diags,sym->moved,n->loc);
if (read && !sym->initialized && !sym->fn)
err(s->c, n->loc, "use of uninitialized variable");
return sym->type;
@@ -1007,8 +971,7 @@ static void check_match(FeCheckerState *s, FeNode *n)
have_merged=1;
} else {
for(i=0;i<flow_count;++i) {
merged[i].moved=merged[i].moved==1 && current[i].moved==1 ? 1 :
(merged[i].moved || current[i].moved ? 2 : 0);
merged[i].moved=fe_own_merge_move(merged[i].moved,current[i].moved);
merged[i].initialized=merged[i].initialized && current[i].initialized;
}
}
@@ -1233,7 +1196,7 @@ static void check_stmt(FeCheckerState *s, FeNode *n)
flow_capture(s->scope,body,flow_count);
for (i=0;i<flow_count;++i) {
entry2[i]=base[i];
if(body[i].moved!=base[i].moved) entry2[i].moved=2;
entry2[i].moved=fe_own_loop_entry(base[i].moved,body[i].moved);
if(!body[i].initialized) entry2[i].initialized=0;
}
flow_restore(entry2,flow_count);
@@ -1242,7 +1205,7 @@ static void check_stmt(FeCheckerState *s, FeNode *n)
if (s->loop_depth) --s->loop_depth;
flow_capture(s->scope,body,flow_count);
for(i=0;i<flow_count;++i) {
if(body[i].moved) entry2[i].moved=2;
entry2[i].moved=fe_own_loop_exit(entry2[i].moved,body[i].moved);
if(!body[i].initialized) entry2[i].initialized=0;
}
flow_restore(entry2,flow_count);