bytecode

Apr 13, 2024

Changes in this version

+ var ErrIndexValue = fmt.Errorf("%w: index not an integer", ErrPanic)

Apr 12, 2024

Changes in this version

+ var ErrBadRepetition = fmt.Errorf("%w: bad repetition count", ErrPanic)

type Opcode

+ const OpArrayRepeat

Apr 4, 2024

Changes in this version

+ const JumpPlaceholder

type Opcode

+ const OpJump

+ const OpJumpOnFalse

Apr 4, 2024

Changes in this version

+ var ErrSlice = fmt.Errorf("%w: invalid slice", ErrPanic)

type Opcode

+ const OpNone

+ const OpSlice

Apr 2, 2024

Changes in this version

+ var ErrBounds = fmt.Errorf("%w: index out of bounds", ErrPanic)

+ var ErrMapKey = fmt.Errorf("%w: no value for map key", ErrPanic)

type Opcode

+ const OpIndex

+ const OpSetIndex

Mar 31, 2024

Changes in this version

type Opcode

+ const OpMap

Mar 28, 2024

Changes in this version

type Opcode

+ const OpArray

+ const OpArrayConcatenate

Mar 18, 2024

Changes in this version

type Opcode

+ const OpStringConcatenate

+ const OpStringGreaterThan

+ const OpStringGreaterThanEqual

+ const OpStringLessThan

+ const OpStringLessThanEqual

Mar 18, 2024

Changes in this version

+ var ErrUnsupportedExpression = fmt.Errorf("%w: unsupported expression", ErrInternal)

type Opcode

+ const OpNumGreaterThan

+ const OpNumGreaterThanEqual

+ const OpNumLessThan

+ const OpNumLessThanEqual

Feb 22, 2024

Changes in this version

type Opcode

+ const OpEqual

+ const OpNotEqual

Feb 21, 2024

Changes in this version

type Opcode

+ const OpMinus

+ const OpNot

Feb 21, 2024

Changes in this version

type Opcode

+ const OpFalse

+ const OpTrue

Feb 19, 2024

Changes in this version

+ var ErrDivideByZero = fmt.Errorf("%w: division by zero", ErrPanic)

type Opcode

+ const OpDivide

+ const OpModulo

+ const OpMultiply

Feb 16, 2024

Changes in this version

+ var ErrInternal = errors.New("internal error")

+ var ErrPanic = errors.New("user error")

+ var ErrUnknownOpcode = fmt.Errorf("%w: unknown opcode", ErrInternal)

+ var ErrUnknownOperator = fmt.Errorf("%w: unknown operator", ErrInternal)

type Opcode

+ const OpAdd

+ const OpSubtract

Feb 12, 2024

Changes in this version

+ const GlobalsSize

+ const StackSize

+ var ErrStackOverflow = errors.New("stack overflow")

+ var ErrUndefinedVar = errors.New("undefined variable")

+ var ErrUnknownOp = errors.New("unknown opcode")

+ func Make(op Opcode, operands ...int) ([]byte, error)

+ func ReadOperands(def *OpDefinition, ins Instructions) ([]int, int)

+ func ReadUint16(ins Instructions) uint16

+ type Bytecode struct

+ Constants []value

+ Instructions Instructions

+ type Compiler struct

+ func NewCompiler() *Compiler

+ func (c *Compiler) Bytecode() *Bytecode

+ func (c *Compiler) Compile(node parser.Node) error

+ type Instructions []byte

+ func (ins Instructions) String() string

+ type OpDefinition struct

+ Name string

+ OperandWidths []int

+ func Lookup(op Opcode) (*OpDefinition, error)

+ type Opcode byte

+ const OpConstant

+ const OpGetGlobal

+ const OpSetGlobal

+ type Symbol struct

+ Index int

+ Name string

+ Scope SymbolScope

+ type SymbolScope string

+ const GlobalScope

+ type SymbolTable struct

+ func NewSymbolTable() *SymbolTable

+ func (s *SymbolTable) Define(name string) Symbol

+ func (s *SymbolTable) Resolve(name string) (Symbol, bool)

+ type VM struct

+ func NewVM(bytecode *Bytecode) *VM

+ func (vm *VM) Run() error