Yolk

A stack based Virtual Machine for executing eggshell

Implemented Instructions

Instruction	First Argument	Second Argument
ASSIGN	name: Name
BINOP	operation: [add, and, ...]
BINOP_INPLACE	operation: Operation	name: Name
COMPARE	test_mode: [equal, less, ...]
DECLARE	name: Name	type: Name (optional)
.DEFINE	name: Name	type: Name (optional)
.DEFINE_END
EXEC	arg_count: uint
JUMP	label: uint
JUMP_IF_TRUE	label: uint
JUMP_IF_FALSE	label: uint
.LABEL	label: uint
LOAD	name: Name
NEGATE
NOT
PIPELINE	mode: [begin, next, end]
PRINT
PUSH_BOOL	value: [true, false]
PUSH_INT	value: int
PUSH_NUM	value: Number
PUSH_STR	value: Quoted

*EXEC is only implemented in mock execution mode

Todo Instructions

• .DEFINE
• SCOPE_BLOCK push/pop
• CALL
• BUILD_LIST
• SLICE
• BUILD_MAP
• SELECT
• BUILD_SET
• ASSERT
• ...

Implemented Binary Operators

• add
• subtract
• multiply
• divide
• int_divide
• power
• modulus
• concat
• and
• or

Todo Operators

• curry
• ...

Implemented Types

• Number: Arbitrary precision rational numbers
• Int: 64-bit signed integers
• String: UTF-8 encoded strings
• Bool: boolean value; true or false

TODO Types

• Struct
• List
• Map
• Set
• Callable