Enum Opcode

pub enum Opcode {
    NOP = 0,
    ADD = 1,
    SUB = 2,
    MPY = 3,
    DIV = 4,
    MOD = 5,
    INS = 6,
    OTS = 7,
    INI = 8,
    OTI = 9,
    HLT = 10,
    LDI = 11,
    MOV = 12,
    LDA = 13,
    MVA = 14,
    LRF = 15,
    CPT = 16,
    PSH = 17,
    POP = 18,
    INC = 19,
    DEC = 20,
    ICP = 21,
    DCP = 22,
    JMP = 23,
    CMP = 24,
    JNE = 25,
    JE = 26,
    JLT = 27,
    JGT = 28,
    CHK = 29,
    JNZ = 30,
    JZ = 31,
    CALL = 32,
    RET = 33,
    SCMP = 34,
    SLEN = 35,
    ORG = 36,
    IRG = 37,
    DBG = 38,
    EXG = 39,
    RAND = 40,
}

Defines various opcodes

Variants

NOP = 0

No operation

ADD = 1

Add the values of two registers

SUB = 2

Subtract the value of one register from another

MPY = 3

Multiply the values of two registers

DIV = 4

Divide the value of one register by another

MOD = 5

Calculates the value of one register modulus another

INS = 6

Reads a string from stdin and puts it into memory pointed to by an argument register

OTS = 7

Prints out a string pointed to by an argument register

INI = 8

Reads an integer from stdin and puts it into memory pointed to by an argument register

OTI = 9

Prints out an integer pointed to by an argument register

HLT = 10

Stops execution of a program

LDI = 11

Loads an immediate value into a register

MOV = 12

Copies the value of one register into another

LDA = 13

Loads the word at an address into a register

MVA = 14

Loads the word pointed to by a register into another register

LRF = 15

Loads the word in a register into memory

CPT = 16

Copies the value pointed to by one register into memory pointed to by another

PSH = 17

Pushes the value of a register onto the stack

POP = 18

Pops the value on top of the stack into a register

INC = 19

Increments the value of a register

DEC = 20

Decrements the value of a register

ICP = 21

Increments the value pointed to by a register

DCP = 22

Decrements the value pointed to by a register

JMP = 23

Unconditional jump

CMP = 24

Compares the values of two registers and sets the proper flags

JNE = 25

Jumps if the equals flag is not set

JE = 26

Jumps if the equals flag is set

JLT = 27

Jumps if the less-than flag is set

JGT = 28

Jumps if the greater-than flag is set

CHK = 29

Checks a register and sets the proper flags

JNZ = 30

Jumps if the zero flag is not set

JZ = 31

Jumps if the zero flag is set

CALL = 32

Calls a subroutine

RET = 33

Returns from a subroutine

SCMP = 34

Compares two strings and sets the proper flags

SLEN = 35

Takes the length of a string pointed to by a register and puts it into another register

ORG = 36

Prints the value of a register to stdout

IRG = 37

Reads a value from stdin and puts it into a register

DBG = 38

Prints out the values of all registers

EXG = 39

Exchanges the values of two registers

RAND = 40

Puts a random integer into the argument register

Implementations

impl Opcode

pub fn from_id(id: u8) -> Self

Returns an Opcode instance corresponding to a one-byte ID

Arguments

• id - The ID matching the desired opcode

Panics

This method will panic if the argument ID does not match any defined opcode.

pub fn from_name(name: &str) -> Self

Returns an Opcode instance corresponding to a name string

Arguments

• name - The name of the desired opcode

Panics

This method will panic if the argument name does not match any defined opcode

pub fn get_id(&self) -> u8

Returns the ID of the Opcode

Trait Implementations

impl Clone for Opcode

fn clone(&self) -> Opcode

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Opcode

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl FromPrimitive for Opcode

fn from_i64(n: i64) -> Option<Self>

Converts an i64 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u64(n: u64) -> Option<Self>

Converts an u64 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_isize(n: isize) -> Option<Self>

Converts an isize to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i8(n: i8) -> Option<Self>

Converts an i8 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i16(n: i16) -> Option<Self>

Converts an i16 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i32(n: i32) -> Option<Self>

Converts an i32 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_i128(n: i128) -> Option<Self>

Converts an i128 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_usize(n: usize) -> Option<Self>

Converts a usize to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u8(n: u8) -> Option<Self>

Converts an u8 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u16(n: u16) -> Option<Self>

Converts an u16 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u32(n: u32) -> Option<Self>

Converts an u32 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_u128(n: u128) -> Option<Self>

Converts an u128 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_f32(n: f32) -> Option<Self>

Converts a f32 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

fn from_f64(n: f64) -> Option<Self>

Converts a f64 to return an optional value of this type. If the value cannot be represented by this type, then None is returned.

impl FromStr for Opcode

type Err = String

Error type for the from_str method

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string and returns an Opcode instance matching the string wrapped in a Result instance

Arguments

• s - the string to parse

impl PartialEq for Opcode

fn eq(&self, other: &Opcode) -> bool

Compares two Opcodes and returns whether they are the same

Arguments

• other - The opcode to compare self to

fn ne(&self, other: &Opcode) -> bool

Compares two Opcodes and returns whether they are different

Arguments

• other - The opcode to compare self to

impl Copy for Opcode