Add initial files

exercises/02/vslc/include/nodetypes.h

@@ -0,0 +1,37 @@
+#ifndef NODETYPES_H
+#define NODETYPES_H
+typedef enum {
+    PROGRAM,
+    GLOBAL_LIST,
+    GLOBAL,
+    STATEMENT_LIST,
+    PRINT_LIST,
+    EXPRESSION_LIST,
+    VARIABLE_LIST,
+    ARGUMENT_LIST,
+    PARAMETER_LIST,
+    DECLARATION_LIST,
+    FUNCTION,
+    STATEMENT,
+    BLOCK,
+    ASSIGNMENT_STATEMENT,
+    ADD_STATEMENT,
+    SUBTRACT_STATEMENT,
+    MULTIPLY_STATEMENT,
+    DIVIDE_STATEMENT,
+    RETURN_STATEMENT,
+    PRINT_STATEMENT,
+    NULL_STATEMENT,
+    IF_STATEMENT,
+    WHILE_STATEMENT,
+    EXPRESSION,
+    RELATION,
+    DECLARATION,
+    PRINT_ITEM,
+    IDENTIFIER_DATA,
+    NUMBER_DATA,
+    STRING_DATA
+} node_index_t;
+
+extern char *node_string[26];
+#endif