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embedded interface types in interfaces.

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R=ken
OCL=25072
CL=25072
This commit is contained in:
Russ Cox 2009-02-16 16:36:18 -08:00
parent 78906c3836
commit b4af09ab56
2 changed files with 44 additions and 6 deletions
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36
src/cmd/gc/dcl.c
View File

@ -643,7 +643,7 @@ funclit1(Type *type, Node *body)
Type**
stotype(Node *n, int et, Type **t)
{
Type *f;
Type *f, *t1;
Iter save;
String *note;
int lno;
@ -666,20 +666,50 @@ loop:
goto next;
}
if(n->op != ODCLFIELD || n->type == T)
if(n->op != ODCLFIELD)
fatal("stotype: oops %N\n", n);
if(n->type == T) {
// assume error already printed
goto next;
}
switch(n->val.ctype) {
case CTSTR:
if(et != TSTRUCT)
yyerror("interface method cannot have annotation");
note = n->val.u.sval;
break;
default:
yyerror("field annotation must be string");
if(et != TSTRUCT)
yyerror("interface method cannot have annotation");
else
yyerror("field annotation must be string");
case CTxxx:
note = nil;
break;
}
if(et == TINTER && n->left == N) {
// embedded interface - inline the methods
if(n->type->etype != TINTER) {
yyerror("interface contains embedded non-interface %T", t);
goto next;
}
for(t1=n->type->type; t1!=T; t1=t1->down) {
if(strcmp(t1->sym->package, package) != 0)
yyerror("embedded interface contains unexported method %S", t1->sym);
f = typ(TFIELD);
f->type = t1->type;
f->width = BADWIDTH;
f->nname = newname(t1->sym);
f->sym = t1->sym;
*t = f;
t = &f->down;
}
goto next;
}
f = typ(TFIELD);
f->type = n->type;
f->note = note;

14
src/cmd/gc/go.y
View File

@ -57,7 +57,7 @@
%type <node> exprsym3_list_r exprsym3
%type <node> name onew_name new_name new_name_list_r new_field
%type <node> vardcl_list_r vardcl Avardcl Bvardcl
%type <node> interfacedcl_list_r interfacedcl
%type <node> interfacedcl_list_r interfacedcl interfacedcl1
%type <node> structdcl_list_r structdcl embed
%type <node> fnres Afnres Bfnres fnliteral xfndcl fndcl fnbody
%type <node> braced_keyexpr_list keyval_list_r keyval
@ -1385,8 +1385,8 @@ embed:
context = nil;
}
interfacedcl:
new_name ',' interfacedcl
interfacedcl1:
new_name ',' interfacedcl1
{
$$ = nod(ODCLFIELD, $1, N);
$$ = nod(OLIST, $$, $3);
@ -1397,6 +1397,14 @@ interfacedcl:
$$->type = $2;
}
interfacedcl:
interfacedcl1
| latype
{
$$ = nod(ODCLFIELD, N, N);
$$->type = oldtype($1);
}
indcl:
'(' oarg_type_list ')' fnres
{