First step in making struct variable opaque: the boring mechanical

[pspp-builds.git] / src / language / expressions / operations.def

diff --git a/src/language/expressions/operations.def b/src/language/expressions/operations.def
index fe3bc5de2fe88f357baee3e00d259eab152eb120..5f0b938a0974a1a1e92a948d961ce7bd9cd1f523 100644 (file)
--- a/src/language/expressions/operations.def
+++ b/src/language/expressions/operations.def
@@ -1,4 +1,23 @@
 // -*- c -*-
+//
+// PSPP - computes sample statistics.
+// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+// Written by Ben Pfaff <blp@gnu.org>.
+// 
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+// 
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+// 
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+// 02110-1301, USA. */
 
 operator NEG (x) = -x;
 
@@ -547,15 +566,8 @@ string function RTRIM (string s, string c)
 
 function NUMBER (string s, ni_format f)
 {
-  struct data_in di;
   union value out;
-  di.s = s.string;
-  di.v = &out;
-  di.flags = DI_IMPLIED_DECIMALS;
-  di.f1 = 1;
-  di.format = *f;
-  di.e = s.string + min (s.length, di.format.w);
-  data_in (&di);
+  data_in (ss_head (s, f->w), f->type, f->d, 0, &out, 0);
   return out.f;
 }
 
@@ -567,8 +579,8 @@ absorb_miss string function STRING (x, no_format f)
 
   v.f = x;
   dst = alloc_string (e, f->w);
-  assert ((formats[f->type].cat & FCAT_STRING) == 0);
-  data_out (dst.string, f, &v);
+  assert (!fmt_is_string (f->type));
+  data_out (&v, f, dst.string);
   return dst;
 }
 
@@ -896,7 +908,7 @@ no_opt operator VEC_ELEM_NUM (idx)
     {
       const struct variable *var = v->var[(int) idx - 1];
       double value = case_num (c, var->fv);
-      return !mv_is_num_user_missing (&var->miss, value) ? value : SYSMIS; 
+      return !var_is_num_user_missing (var, value) ? value : SYSMIS; 
     }
   else
     {
@@ -920,7 +932,7 @@ absorb_miss no_opt string operator VEC_ELEM_STR (idx)
   if (idx >= 1 && idx <= v->cnt)
     {
       struct variable *var = v->var[(int) idx - 1];
-      return copy_string (e, case_str (c, var->fv), var->width);
+      return copy_string (e, case_str (c, var->fv), var_get_width (var));
     }
   else
     {
@@ -943,7 +955,7 @@ no_opt operator NUM_VAR ()
      num_var v;
 {
   double d = case_num (c, v->fv);
-  return !mv_is_num_user_missing (&v->miss, d) ? d : SYSMIS;
+  return !var_is_num_user_missing (v, d) ? d : SYSMIS;
 }
 
 no_opt string operator STR_VAR ()
@@ -951,30 +963,32 @@ no_opt string operator STR_VAR ()
      expression e;
      str_var v;
 {
-  struct substring s = alloc_string (e, v->width);
-  memcpy (s.string, case_str (c, v->fv), v->width);
+  struct substring s = alloc_string (e, var_get_width (v));
+  memcpy (s.string, case_str (c, v->fv), var_get_width (v));
   return s;
 }
 
 no_opt perm_only function LAG (num_var v, pos_int n_before)
+    dataset ds;
 {
-  struct ccase *c = lagged_case (n_before);
+  struct ccase *c = lagged_case (ds, n_before);
   if (c != NULL)
     {
       double x = case_num (c, v->fv);
-      return !mv_is_num_user_missing (&v->miss, x) ? x : SYSMIS;
+      return !var_is_num_user_missing (v, x) ? x : SYSMIS;
     }
   else
     return SYSMIS;
 }
 
 no_opt perm_only function LAG (num_var v)
+    dataset ds;
 {
-  struct ccase *c = lagged_case (1);
+  struct ccase *c = lagged_case (ds, 1);
   if (c != NULL)
     {
       double x = case_num (c, v->fv);
-      return !mv_is_num_user_missing (&v->miss, x) ? x : SYSMIS;
+      return !var_is_num_user_missing (v, x) ? x : SYSMIS;
     }
   else
     return SYSMIS;
@@ -982,20 +996,22 @@ no_opt perm_only function LAG (num_var v)
 
 no_opt perm_only string function LAG (str_var v, pos_int n_before)
      expression e;
+     dataset ds;
 {
-  struct ccase *c = lagged_case (n_before);
+  struct ccase *c = lagged_case (ds, n_before);
   if (c != NULL)
-    return copy_string (e, case_str (c, v->fv), v->width);
+    return copy_string (e, case_str (c, v->fv), var_get_width (v));
   else
     return empty_string;
 }
 
 no_opt perm_only string function LAG (str_var v)
      expression e;
+     dataset ds;
 {
-  struct ccase *c = lagged_case (1);
+  struct ccase *c = lagged_case (ds, 1);
   if (c != NULL)
-    return copy_string (e, case_str (c, v->fv), v->width);
+    return copy_string (e, case_str (c, v->fv), var_get_width (v));
   else
     return empty_string;
 }