executor

Documentation

Index

• Constants
• func Eval(line string, ctx *script.ScriptContext) error
• func EvalBatch(r io.Reader, ctx *script.ScriptContext) error
• func NewScriptContext(getSession func() *session.Session, resetSession func() error, st *store.Store, ...) (script.ScriptContext, context.CancelFunc)
• type Instruction
• type Jump

Constants

const ScriptHelpText = `` /* 5625-byte string literal not displayed */

Functions

func Eval

func Eval(line string, ctx *script.ScriptContext) error

Evaluate a single line with provided context

func EvalBatch

func EvalBatch(r io.Reader, ctx *script.ScriptContext) error

Evaluate from input source line by line, passing each result to callback provided

func NewScriptContext

func NewScriptContext(
	getSession func() *session.Session,
	resetSession func() error,
	st *store.Store,
	writer io.Writer,
) (script.ScriptContext, context.CancelFunc)

Types

type Instruction

type Instruction struct {
	Text   string
	LineNo int
	Type   string
}

We strip out comments and blanks, so track original line# for debugging

type Jump

type Jump struct {
	TargetOnFalse int // If -> elif; elif -> else; while -> endwhile
	TargetOnEnd   int // If/elif/else -> endif; endwhile -> while; break -> endwhile; continue -> while
}

Keeps track of where the Program Counter (PC) should move next. PC is just the index of the slice of instructions. On true, we always execute the next immediate line.