new constv type

[chiark-tcl.git] / base / parse.c

diff --git a/base/parse.c b/base/parse.c
index b81511cc827e0c45d1cb53bfe318c74cb1a34cfe..0fa5acdd4705d942ca158f5475e1691b5651e5ac 100644 (file)
--- a/base/parse.c
+++ b/base/parse.c
@@ -10,51 +10,80 @@ int pat_charfrom(Tcl_Interp *ip, Tcl_Obj *obj, int *val,
   return TCL_OK;
 }
 
-int pat_enum(Tcl_Interp *ip, Tcl_Obj *obj, const void **val,
-            const void *opts, size_t sz, const char *what) {
-  *val= enum_lookup_cached_func(ip,obj,opts,sz,what);
-  if (!*val) return TCL_ERROR;
+int pat_int(Tcl_Interp *ip, Tcl_Obj *obj, int *val) {
+  return Tcl_GetIntFromObj(ip, obj, val);
+}
+  
+int pat_long(Tcl_Interp *ip, Tcl_Obj *obj, long *val) {
+  return Tcl_GetLongFromObj(ip, obj, val);
+}
+  
+int pat_string(Tcl_Interp *ip, Tcl_Obj *obj, const char **val) {
+  *val= Tcl_GetString(obj);
   return TCL_OK;
 }
+
+int pat_constv(Tcl_Interp *ip, Tcl_Obj *var,
+              Tcl_Obj **val_r, Tcl_ObjType *type) {
+  int rc;
+  Tcl_Obj *val;
   
-int pat_obj(Tcl_Interp *ip, Tcl_Obj *obj, Tcl_Obj **val) {
-  *val= obj;
+  val= Tcl_ObjGetVar2(ip,var,0,TCL_LEAVE_ERR_MSG);
+  if (!val) return TCL_ERROR;
+
+  if (type) {
+    rc= Tcl_ConvertToType(ip,val,type);
+    if (rc) return rc;
+  }
+
+  *val_r= val;
   return TCL_OK;
 }
 
-int pat_int(Tcl_Interp *ip, Tcl_Obj *obj, int *val) {
-  return Tcl_GetIntFromObj(ip, obj, val);
+void init_somethingv(Something_Var *sth) {
+  sth->obj=0; sth->var=0; sth->copied=0;
 }
-  
-int pat_hbv(Tcl_Interp *ip, Tcl_Obj *var, HBytes_Var *agg) {
+
+int pat_somethingv(Tcl_Interp *ip, Tcl_Obj *var,
+                  Something_Var *sth, Tcl_ObjType *type) {
   int rc;
   Tcl_Obj *val;
 
-  Tcl_IncrRefCount(var);
-  agg->var= var;
+  sth->var= var;
 
   val= Tcl_ObjGetVar2(ip,var,0,TCL_LEAVE_ERR_MSG);
   if (!val) return TCL_ERROR;
-  if (Tcl_IsShared(val)) val= Tcl_DuplicateObj(val);
-  Tcl_IncrRefCount(val);
-  agg->obj= val;
-  
-  rc= Tcl_ConvertToType(ip,val,&hbytes_type);
+
+  rc= Tcl_ConvertToType(ip,val,type);
   if (rc) return rc;
 
-  agg->hb= OBJ_HBYTES(val); return TCL_OK; }
+  if (Tcl_IsShared(val)) {
+    val= Tcl_DuplicateObj(val);
+    sth->copied= 1;
+  }
+  Tcl_InvalidateStringRep(val);
+  sth->obj= val;
+
+  return TCL_OK;
+}
+
+int pat_hbv(Tcl_Interp *ip, Tcl_Obj *var, HBytes_Var *agg) {
+  int rc;
+  rc= pat_somethingv(ip,var,&agg->sth,&hbytes_type);  if (rc) return rc;
+  agg->hb= OBJ_HBYTES(agg->sth.obj);
+  return TCL_OK;
+}
 
-void fini_hbv(Tcl_Interp *ip, int rc, HBytes_Var *agg) {
+void fini_somethingv(Tcl_Interp *ip, int rc, Something_Var *sth) {
   Tcl_Obj *ro;
   
-  if (agg->obj) Tcl_InvalidateStringRep(agg->obj);
   if (!rc) {
-    assert(agg->obj);
-    ro= Tcl_ObjSetVar2(ip,agg->var,0,agg->obj,TCL_LEAVE_ERR_MSG);
+    assert(sth->obj);
+    ro= Tcl_ObjSetVar2(ip,sth->var,0,sth->obj,TCL_LEAVE_ERR_MSG);
     if (!ro) rc= TCL_ERROR;
   }
-  if (agg->obj) Tcl_DecrRefCount(agg->obj);
-  if (agg->var) Tcl_DecrRefCount(agg->var);
+  if (rc && sth->copied)
+    Tcl_DecrRefCount(sth->obj);
 }
 
 int pat_hb(Tcl_Interp *ip, Tcl_Obj *obj, HBytes_Value *val) {
@@ -73,15 +102,10 @@ Tcl_Obj *ret_hb(Tcl_Interp *ip, HBytes_Value val) {
   return obj;
 }
 
-Tcl_Obj *ret_int(Tcl_Interp *ip, int val) {
-  return Tcl_NewIntObj(val);
-}
-
-Tcl_Obj *ret_obj(Tcl_Interp *ip, Tcl_Obj *val) {
-  return val;
+Tcl_Obj *ret_long(Tcl_Interp *ip, long val) {
+  return Tcl_NewLongObj(val);
 }
 
-void setstringresult(Tcl_Interp *ip, const char *m) {
-  Tcl_ResetResult(ip);
-  Tcl_AppendResult(ip, m, (char*)0);
+Tcl_Obj *ret_string(Tcl_Interp *ip, const char *val) {
+  return Tcl_NewStringObj(val,-1);
 }