1 files changed, 110 insertions, 0 deletions
diff --git a/jam-files/engine/modules/property-set.c b/jam-files/engine/modules/property-set.c
new file mode 100644
index 000000000..2b0fb5d97
--- /dev/null
+++ b/jam-files/engine/modules/property-set.c
@@ -0,0 +1,110 @@
+/* Copyright Vladimir Prus 2003. Distributed under the Boost */
+/* Software License, Version 1.0. (See accompanying */
+/* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) */
+
+#include "../native.h"
+#include "../timestamp.h"
+#include "../newstr.h"
+#include "../strings.h"
+#include "../lists.h"
+#include "../variable.h"
+#include "../compile.h"
+
+LIST* get_grist(char* f)
+{
+    char* end = strchr(f, '>');
+    string s[1];
+    LIST* result;
+
+    string_new(s);
+
+    string_append_range(s, f, end+1);
+    result = list_new(0, newstr(s->value));
+
+    string_free(s);
+    return result;
+}
+
+/*
+rule create ( raw-properties * )
+{
+    raw-properties = [ sequence.unique
+        [ sequence.insertion-sort $(raw-properties) ] ] ;
+
+    local key = $(raw-properties:J=-:E=) ;
+
+    if ! $(.ps.$(key))
+    {
+        .ps.$(key) = [ new property-set $(raw-properties) ] ;
+    }
+    return $(.ps.$(key)) ;
+}
+*/
+
+LIST *property_set_create( PARSE *parse, FRAME *frame )
+{
+    LIST* properties = lol_get( frame->args, 0 );
+    LIST* sorted = 0;
+#if 0
+    LIST* order_sensitive = 0;
+#endif
+    LIST* unique;
+    LIST* tmp;
+    LIST* val;
+    string var[1];
+
+#if 0
+    /* Sort all properties which are not order sensitive */
+    for(tmp = properties; tmp; tmp = tmp->next) {
+        LIST* g = get_grist(tmp->string);
+        LIST* att = call_rule("feature.attributes", frame, g, 0);
+        if (list_in(att, "order-sensitive")) {
+            order_sensitive = list_new( order_sensitive, tmp->string);
+        } else {
+            sorted = list_new( sorted, tmp->string);
+        }
+        list_free(att);
+    }
+
+    sorted = list_sort(sorted);
+    sorted = list_append(sorted, order_sensitive);
+    unique = list_unique(sorted);
+#endif
+    sorted = list_sort(properties);
+    unique = list_unique(sorted);
+
+    string_new(var);
+    string_append(var, ".ps.");
+
+    for(tmp = unique; tmp; tmp = tmp->next) {
+        string_append(var, tmp->string);
+        string_push_back(var, '-');
+    }
+    val = var_get(var->value);
+    if (val == 0)
+    {
+        val = call_rule("new", frame,
+                        list_append(list_new(0, "property-set"), unique), 0);
+
+        var_set(newstr(var->value), list_copy(0, val), VAR_SET);
+    }
+    else
+    {
+        val = list_copy(0, val);
+    }
+
+    string_free(var);
+    /* The 'unique' variable is freed in 'call_rule'. */
+    list_free(sorted);
+
+    return val;
+
+}
+
+void init_property_set()
+{
+    {
+        char* args[] = { "raw-properties", "*", 0 };
+        declare_native_rule("property-set", "create", args, property_set_create, 1);
+    }
+}