Local Value Arrays

If the number of new locals to be protected is unknown at compile you can use the following macros that create protected arrays of values. One form creates the array on the stack using \_alloc() and so is useful inside one function call, the other puts the array in the heap and so can be used across functions. In both cases, you also need to declare a Value** variable to hold the pointer to the array.

Stack-resident Array

• value_local_array - allocates the array of Value* variables
• pop_value_local_array - dismisses the array of Value* variables

Heap-resident Array

• value_temp_array - allocates the array of Value* variables
• realloc_value_temp_array - resizes the array
• pop_value_temp_array - dismisses the array

Example

Value** items;
value_local_array(items, n);
for (int i = 0; i < n; i++)
  items[i] = Float::intern(data[i]);
pop_value_local_array(items);