Data Structures & Metadata

These instructions handle dynamic memory allocation for complex types. Objects and arrays in LightVM are allocated on the heap; when using these opcodes, ensure that your program manages references correctly to avoid memory overhead. Metadata operations (length, typeof) allow for runtime type introspection and data validation.

Opcode	Arguments	Operands (stack)	Description
make_obj	count	k1, v1, ... kn, vn	Create Object from n key-value pairs in stack
make_array	count	v1, v2, ... vn	Create an Array of n elements in a stack
access	prop_name	target_obj	Access Object's properties
access_index	-	target_arr, index	Access Array elements by index on the stack
length	-	val	Check the length of a string or the number of items in an array/object
typeof	-	val	Get the data type from the top value of the stack
concat	-	val1, val2	Combine two values (usually strings)