--- psiconv/trunk/lib/psiconv/generate_simple.c	2000/12/22 22:31:50	71
+++ psiconv/trunk/lib/psiconv/generate_simple.c	2000/12/23 20:21:40	72
@@ -23,12 +23,12 @@
 #include "generate_routines.h"
 #include "error.h"
 
-int psiconv_write_u8(psiconv_buffer buf,psiconv_u8 value)
+int psiconv_write_u8(psiconv_buffer buf,const psiconv_u8 value)
 {
   return psiconv_list_add(buf,&value);
 }
 
-int psiconv_write_u16(psiconv_buffer buf,psiconv_u16 value)
+int psiconv_write_u16(psiconv_buffer buf,const psiconv_u16 value)
 {
   int res;
   psiconv_u8 temp;
@@ -39,7 +39,7 @@
   return psiconv_list_add(buf,&temp);
 }
 
-int psiconv_write_u32(psiconv_buffer buf,psiconv_u32 value)
+int psiconv_write_u32(psiconv_buffer buf,const psiconv_u32 value)
 {
   int res;
   psiconv_u8 temp;
@@ -56,7 +56,7 @@
   return psiconv_list_add(buf,&temp);
 }
 
-int psiconv_write_S(psiconv_buffer buf, psiconv_u32 value)
+int psiconv_write_S(psiconv_buffer buf, const psiconv_u32 value)
 {
   if (value < 0x40) 
     return psiconv_write_u8(buf,value * 4 + 2);
@@ -70,7 +70,7 @@
   }
 }
 
-int psiconv_write_X(psiconv_buffer buf, psiconv_u32 value)
+int psiconv_write_X(psiconv_buffer buf, const psiconv_u32 value)
 {
   if (value < 0x80) 
     return psiconv_write_u8(buf,value * 2);
@@ -86,7 +86,7 @@
   }
 }
 
-int psiconv_write_length(psiconv_buffer buf, psiconv_length_t value)
+int psiconv_write_length(psiconv_buffer buf, const psiconv_length_t value)
 {
   return psiconv_write_u32(buf,value * (1440.0/2.54) + 0.5);
 }
@@ -96,14 +96,22 @@
   return psiconv_write_u32(buf,value * 20.0 + 0.5);
 }
 
-int psiconv_write_bool(psiconv_buffer buf, psiconv_bool_t value)
+int psiconv_write_bool(psiconv_buffer buf, const psiconv_bool_t value)
 {
-  return psiconv_write_u8(buf,value == psiconv_bool_true?1:0);
+  if ((value != psiconv_bool_true) && (value != psiconv_bool_false)) 
+    psiconv_warn(0,psiconv_list_length(buf),
+                 "Boolean has non-enum value (found %d)",value);
+  return psiconv_write_u8(buf,value == psiconv_bool_false?0:1);
 }
 
-int psiconv_write_string(psiconv_buffer buf, psiconv_string_t value)
+int psiconv_write_string(psiconv_buffer buf, const psiconv_string_t value)
 {
   int res,i;
+  if (!value) {
+    psiconv_warn(0,psiconv_list_length(buf),
+                 "NULL string");
+    return -PSICONV_E_GENERATE;
+  }
   if ((res = psiconv_write_S(buf,strlen(value))))
     return res;
   for (i = 0; i < strlen(value); i++)