com.hypixel.hytale.server.npc.util.expression

Package: com.hypixel.hytale.server.npc.util.expression

Runtime expression evaluator used by the NPC behavior system. Expressions in NPC role JSON assets (e.g. dynamic numeric or boolean values) are compiled into stack-based instruction sequences and executed against a Scope that provides variable bindings and functions. The system supports numbers, strings, booleans, and typed arrays, with a standard library of math and utility functions.

Types

Type	Kind	Description
Expression	class	Entry point for compiling and executing expression strings.
ExecutionContext	class	Stack-based virtual machine that executes compiled instruction sequences.
Scope	interface	Contract for variable and function providers used during compilation and execution.
StdScope	class	Symbol-table-backed scope implementation with parent chain resolution.
StdLib	class	Singleton standard library scope providing built-in constants and functions.
ValueType	enum	Discriminant for the eight value types the expression system supports.