Index: work/alien_formats/eagle/eagle_bin/test_parser/Makefile
===================================================================
--- work/alien_formats/eagle/eagle_bin/test_parser/Makefile	(revision 9537)
+++ work/alien_formats/eagle/eagle_bin/test_parser/Makefile	(revision 9538)
@@ -1,7 +1,9 @@
-CFLAGS = -Wall -g -ansi -pedantic
+CFLAGS = -Wall -g -ansi -pedantic -Dinline
 
-main: main.o eagle_bin.o
+main: main.o eagle_bin.o egb_tree.o
 
-main.o: main.c eagle_bin.h
+main.o: main.c eagle_bin.h egb_tree.h
 
 eagle_bin.o: eagle_bin.c eagle_bin.h
+
+egb_tree.o: egb_tree.c egb_tree.h
Index: work/alien_formats/eagle/eagle_bin/test_parser/egb_tree.c
===================================================================
--- work/alien_formats/eagle/eagle_bin/test_parser/egb_tree.c	(nonexistent)
+++ work/alien_formats/eagle/eagle_bin/test_parser/egb_tree.c	(revision 9538)
@@ -0,0 +1,26 @@
+#include "egb_tree.h"
+
+egb_node_t *egb_node_alloc(int id, const char *id_name)
+{
+	egb_node_t *nd = calloc(sizeof(egb_node_t), 1);
+	nd->id = id;
+	nd->id_name = id_name;
+	return id;
+}
+
+egb_node_t *egb_node_append(egb_node_t *parent, egb_node_t *node)
+{
+	node->parent = parent;
+	node->next = NULL;
+
+	if (parent->last_child == NULL) {
+		parent->last_child = node;
+		parent->first_child = node;
+	}
+	else {
+		parent->last_child->next = node;
+		parent->last_child = node;
+	}
+	return node;
+}
+
Index: work/alien_formats/eagle/eagle_bin/test_parser/egb_tree.h
===================================================================
--- work/alien_formats/eagle/eagle_bin/test_parser/egb_tree.h	(nonexistent)
+++ work/alien_formats/eagle/eagle_bin/test_parser/egb_tree.h	(revision 9538)
@@ -0,0 +1,18 @@
+/* eagle binary file tree representation */
+
+#include <genht/htss.h>
+
+typedef struct egb_node_s egb_node_t;
+
+struct egb_node_s {
+	int id;
+	const char *id_name;
+	htss_t props;
+	egb_node_t *parent;
+	egb_node_t *first_child, *last_child;
+};
+
+
+egb_node_t *egb_node_alloc(int id, const char *id_name);
+egb_node_t *egb_node_append(egb_node_t *parent, egb_node_t *node);
+