Changeset c3437d9 in mainline for uspace/app/bithenge/transform.c

Timestamp:

2012-08-04T03:51:15Z (12 years ago)

Author:

Sean Bartell <wingedtachikoma@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

0ce0103

Parents:

e3f2765

Message:

Bithenge: add do{}while() transforms

File:

• uspace/app/bithenge/transform.c (modified) (3 diffs)

uspace/app/bithenge/transform.c

@@ -201 +201 @@
         for (int i = 0; i < out->num_params; i++)
                 bithenge_node_inc_ref(out->params[i]);
+        bithenge_node_dec_ref(out->current_node);
         out->current_node = scope->current_node;
         if (out->current_node)
@@ -474 +475 @@
 bithenge_transform_t bithenge_known_length_transform = {
         &known_length_ops, 1, 1
+};
+
+static int nonzero_boolean_apply(bithenge_transform_t *self,
+    bithenge_scope_t *scope, bithenge_node_t *in, bithenge_node_t **out)
+{
+        if (bithenge_node_type(in) != BITHENGE_NODE_INTEGER)
+                return EINVAL;
+        bool value = bithenge_integer_node_value(in) != 0;
+        return bithenge_new_boolean_node(out, value);
+}
+
+static const bithenge_transform_ops_t nonzero_boolean_ops = {
+        .apply = nonzero_boolean_apply,
+        .destroy = transform_indestructible,
+};
+
+/** A transform that converts integers to booleans, true if nonzero. */
+bithenge_transform_t bithenge_nonzero_boolean_transform = {
+        &nonzero_boolean_ops, 1, 0
 };
 
@@ -602 +622 @@
         {"ascii", &bithenge_ascii_transform},
         {"known_length", &bithenge_known_length_transform},
+        {"nonzero_boolean", &bithenge_nonzero_boolean_transform},
         {"uint8", &bithenge_uint8_transform},
         {"uint16le", &bithenge_uint16le_transform},