Allow to exchange fixed-sized arrays which size is \#defined

[simgrid.git] / src / gras / DataDesc / ddt_parse.c

diff --git a/src/gras/DataDesc/ddt_parse.c b/src/gras/DataDesc/ddt_parse.c
index 341767e..7cb63fc 100644 (file)
--- a/src/gras/DataDesc/ddt_parse.c
+++ b/src/gras/DataDesc/ddt_parse.c
@@ -315,8 +315,16 @@ static void parse_statement(char    *definition,
          char *end;
          long int size=strtol(gras_ddt_parse_text, &end, 10);
 
-         if (end == gras_ddt_parse_text || *end != '\0')
-           PARSE_ERROR1("Unparsable size of array (found '%c', expected number)",*end);
+         if (end == gras_ddt_parse_text || *end != '\0') {
+           /* Not a number. Get the constant value, if any */
+           int *storage=xbt_dict_get_or_null(gras_dd_constants,gras_ddt_parse_text);
+           if (storage) {
+             size = *storage;
+           } else {
+             PARSE_ERROR1("Unparsable size of array. Found '%s', expected number or known constant. Need to use gras_datadesc_set_const(), huh?",
+                          gras_ddt_parse_text);
+           }
+         }
 
          /* replace the previously pushed type to an array of it */
          change_to_fixed_array(identifiers,size);
@@ -645,3 +653,12 @@ gras_datadesc_parse(const char            *name,
   XBT_OUT;
   return res;
 }
+
+xbt_dict_t gras_dd_constants;
+/** \brief Declare a constant to the parsing mecanism. See the "\#define and fixed size array" section */
+void gras_datadesc_set_const(const char*name, int value) {
+  int *stored = xbt_new(int, 1);
+  *stored=value;
+
+  xbt_dict_set(gras_dd_constants,name, stored, free); 
+}