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allow len := 0 

R=r
OCL=17869
CL=17869
This commit is contained in:
Ken Thompson 2008-10-26 14:04:09 -07:00
parent c4af3e7c2a
commit e8278bcb29
1 changed files with 39 additions and 14 deletions
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53
src/cmd/gc/go.y
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@ -42,7 +42,7 @@
* names like Bstmt, Bvardcl, etc. can't.
*/
%type <sym> sym sym1 sym2 keyword laconst lname latype lpackatype
%type <sym> sym sym1 sym2 sym3 keyword laconst lname latype lpackatype
%type <node> xdcl xdcl_list_r oxdcl_list
%type <node> common_dcl Acommon_dcl Bcommon_dcl
%type <node> oarg_type_list arg_type_list_r arg_chunk arg_chunk_list_r arg_type_list
@ -55,6 +55,7 @@
%type <node> range_header range_body range_stmt select_stmt
%type <node> simple_stmt osimple_stmt semi_stmt
%type <node> expr uexpr pexpr expr_list oexpr oexpr_list expr_list_r
%type <node> exprsym3_list_r exprsym3
%type <node> name onew_name new_name new_name_list_r
%type <node> vardcl_list_r vardcl Avardcl Bvardcl
%type <node> interfacedcl_list_r interfacedcl
@ -414,13 +415,16 @@ simple_stmt:
$$ = nod(OASOP, $1, $3);
$$->etype = $2; // rathole to pass opcode
}
| expr_list '=' expr_list
| exprsym3_list_r '=' expr_list
{
$$ = nod(OAS, $1, $3);
$$ = rev($1);
$$ = nod(OAS, $$, $3);
}
| expr_list LCOLAS expr_list
| exprsym3_list_r LCOLAS expr_list
{
$$ = nod(OAS, colas($1, $3), $3);
$$ = rev($1);
$$ = colas($$, $3);
$$ = nod(OAS, $$, $3);
addtotop($$);
}
| LPRINT '(' oexpr_list ')'
@ -961,15 +965,11 @@ sym2:
sym1
/*
* keywords that we can
* use as variable/type names
* keywords that can be variables
* but are not already legal expressions
*/
keyword:
LNIL
| LTRUE
| LFALSE
| LIOTA
| LLEN
sym3:
LLEN
| LCAP
| LPANIC
| LPANICN
@ -980,6 +980,17 @@ keyword:
| LTYPEOF
| LCONVERT
/*
* keywords that we can
* use as variable/type names
*/
keyword:
sym3
| LNIL
| LTRUE
| LFALSE
| LIOTA
name:
lname
{
@ -1544,6 +1555,20 @@ new_name_list_r:
$$ = nod(OLIST, $1, $3);
}
exprsym3:
expr
| sym3
{
$$ = newname($1);
}
exprsym3_list_r:
exprsym3
| exprsym3_list_r ',' exprsym3
{
$$ = nod(OLIST, $1, $3);
}
export_list_r:
export
| export_list_r ocomma export
@ -1924,7 +1949,7 @@ hidden_importsym:
* to check whether the rest of the grammar is free of
* reduce/reduce conflicts, comment this section out by
* removing the slash on the next line.
*/
*
lpack:
LATYPE
{