Parse local variables

TODO

@@ -1,9 +1,12 @@
 # Intermediate code generation
 
-- To access named parameters and local variables inside a procedure, IR should
-  be able to reference them. During the generation the needed information (e.g.
-  offsets or registers) can be extracted from the symbol table and saved in the
-  operands.
+- To access named parameters inside a procedure, IR should be able to reference
+  them. During the generation the needed information (e.g. offsets or registers)
+  can be extracted from the symbol table and saved in the operands.
+- Glue always generates the same intermediate variable (LocalVariable 0) for
+  local variables. (LocalVariable 0) is handled the same as temporary variables
+  that are currently saved only in registers. There space on the stack allocated
+  for local variables.
 
 # ELF generation
 
@@ -15,3 +18,9 @@
 - Each temporary variable gets a tn register where n is the variable index. If
   there more variables the allocation will fail with out of bounds runtime
   error. Implement spill over.
+- The allocator puts temporary and local variables into the same registers,
+  causing conflicts.
+
+# Language
+
+- Array support.