EVAL/VALID?

Assesses validity of the code from the perspective of decoding

Input stack: code

Output stack: 1 or 0

EVAL/VALID? will only verify if PumpkinDB will be able to interpret the code. However, it won't assess any other properties pertaining to its validity.

Generally speaking, this word is only reserved for some special cases as EVAL will fail upon trying to evaluate incorrect code anyway.

PumpkinDB> 1 EVAL/VALID?
0x00
PumpkinDB> 'DUP EVAL/VALID?
0x01
PumpkinDB> [1 DUP] EVAL/VALID?
0x01

Allocation

Allocates for parsing the binary representation of the program.

Errors

EmptyStack error if there is less than one item on the stack

Tests

positive : [1] EVAL/VALID?.
negative : 1 EVAL/VALID? NOT.
empty_stack : [EVAL/VALID?] TRY UNWRAP 0x04 EQUAL?.

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