+GQuark
+ LTTV_FILTER_TRACE,
+ LTTV_FILTER_TRACESET,
+ LTTV_FILTER_TRACEFILE,
+ LTTV_FILTER_STATE,
+ LTTV_FILTER_EVENT,
+ LTTV_FILTER_NAME,
+ LTTV_FILTER_CATEGORY,
+ LTTV_FILTER_TIME,
+ LTTV_FILTER_TSC,
+ LTTV_FILTER_PID,
+ LTTV_FILTER_PPID,
+ LTTV_FILTER_C_TIME,
+ LTTV_FILTER_I_TIME,
+ LTTV_FILTER_P_NAME,
+ LTTV_FILTER_EX_MODE,
+ LTTV_FILTER_EX_SUBMODE,
+ LTTV_FILTER_P_STATUS,
+ LTTV_FILTER_CPU;
+
+/**
+ * Assign a new tree for the current expression
+ * or sub expression
+ * @return pointer of lttv_filter_tree
+ */
+lttv_filter_tree* lttv_filter_tree_new() {
+ lttv_filter_tree* tree;
+
+ tree = g_new(lttv_filter_tree,1);
+ tree->node = g_new(lttv_expression,1);
+ tree->node->type = LTTV_UNDEFINED_EXPRESSION;
+ tree->left = LTTV_TREE_IDLE;
+ tree->right = LTTV_TREE_IDLE;
+
+ return tree;
+}
+
+/**
+ * Destroys the tree and his sub-trees
+ * @param tree Tree which must be destroyed
+ */
+void lttv_filter_tree_destroy(lttv_filter_tree* tree) {
+
+ if(tree->left == LTTV_TREE_LEAF) g_free(tree->l_child.leaf);
+ else if(tree->left == LTTV_TREE_NODE) lttv_filter_tree_destroy(tree->l_child.t);
+
+ if(tree->right == LTTV_TREE_LEAF) g_free(tree->r_child.leaf);
+ else if(tree->right == LTTV_TREE_NODE) lttv_filter_tree_destroy(tree->r_child.t);
+
+ g_free(tree->node);
+ g_free(tree);
+}
+
+/**
+ * Parse through filtering field hierarchy as specified
+ * by user. This function compares each value to
+ * predetermined quarks
+ * @param fp The field path list
+ * @return success/failure of operation
+ */
+gboolean
+parse_field_path(GPtrArray* fp) {
+
+ GString* f = NULL;
+ if(fp->len < 2) return FALSE;
+ g_assert(f=g_ptr_array_index(fp,0)); //list_first(fp)->data;
+
+ if(g_quark_try_string(f->str) == LTTV_FILTER_EVENT) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_NAME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_CATEGORY) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_TIME) {
+ // offset = &((LttEvent*)NULL)->event_time);
+ }
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_TSC) {
+ // offset = &((LttEvent*)NULL)->event_cycle_count);
+ }
+ else { /* core.xml specified options */
+
+ }
+ } else if(g_quark_try_string(f->str) == LTTV_FILTER_TRACEFILE) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_NAME) {}
+ else return FALSE;
+ } else if(g_quark_try_string(f->str) == LTTV_FILTER_TRACE) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_NAME) {}
+ else return FALSE;
+
+ } else if(g_quark_try_string(f->str) == LTTV_FILTER_STATE) {
+ f=g_ptr_array_index(fp,1);
+ if(g_quark_try_string(f->str) == LTTV_FILTER_PID) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_PPID) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_C_TIME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_I_TIME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_P_NAME) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_EX_MODE) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_EX_SUBMODE) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_P_STATUS) {}
+ else if(g_quark_try_string(f->str) == LTTV_FILTER_CPU) {}
+ else return FALSE;
+
+ } else {
+ g_warning("Unrecognized field in filter string");
+ return FALSE;
+ }
+ return TRUE;
+}
+