preparing node

Makefile

@@ -1,4 +1,4 @@
-OBJECTS= ./build/compiler.o ./build/cprocess.o ./build/lexer.o ./build/token.o ./build/lex_process.o ./build/parser.o ./build/helpers/buffer.o ./build/helpers/vector.o
+OBJECTS= ./build/compiler.o ./build/cprocess.o ./build/lexer.o ./build/token.o ./build/lex_process.o ./build/parser.o ./build/node.o ./build/helpers/buffer.o ./build/helpers/vector.o
 INCLUDES= -I./
 
 all: ${OBJECTS}
@@ -22,6 +22,9 @@ all: ${OBJECTS}
 ./build/parser.o: ./parser.c
 	gcc ./parser.c ${INCLUDES} -o ./build/parser.o -g -c
 
+./build/node.o: ./node.c
+	gcc ./node.c ${INCLUDES} -o ./build/node.o -g -c
+
 ./build/helpers/buffer.o: ./helpers/buffer.c
 	gcc ./helpers/buffer.c ${INCLUDES} -o ./build/helpers/buffer.o -g -c
 

node.c

@@ -0,0 +1,42 @@
+#include "compiler.h"
+#include "helpers/vector.h"
+#include <assert.h>
+
+struct vector *node_vector = NULL;
+struct vector *node_vector_root = NULL;
+
+void node_set_vector(struct vector *vec, struct vector *root_vec)
+{
+    node_vector = vec;
+    node_vector_root = root_vec;
+}
+
+void node_push(struct node *node)
+{
+    vector_push(node_vector, &node);
+}
+
+struct node *node_peek_or_null()
+{
+    return vector_back_ptr_or_null(node_vector);
+}
+
+struct node *node_peek()
+{
+    return *(struct node **)(vector_back(node_vector));
+}
+
+struct node *node_pop()
+{
+    struct node *last_node = vector_back_ptr(node_vector);
+    struct node *last_node_root = vector_empty(node_vector) ? NULL : vector_back_ptr(node_vector_root);
+
+    vector_pop(node_vector);
+
+    if (last_node == last_node_root)
+    {
+        vector_pop(node_vector_root);
+    }
+
+    return last_node;
+}