iframe-proxy | Sunbelt Computer Software

215 lines (158 loc) · 3.13 KB

	"github.com/antonmedv/expr/internal/file"
type Program struct {
	Source    *file.Source
	Locations []file.Location
	Constants []interface{}
	Bytecode  []int
func (program *Program) Disassemble() string {
	for ip < len(program.Bytecode) {
		op := program.Bytecode[ip]
		readArg := func() int {
			if ip+1 >= len(program.Bytecode) {
				return 0
			i := program.Bytecode[ip]
			return i
		code := func(label string) {
			out += fmt.Sprintf("%v\t%v\n", pp, label)
		jump := func(label string) {
			a := readArg()
			out += fmt.Sprintf("%v\t%v\t%v\t(%v)\n", pp, label, a, ip+int(a))
		back := func(label string) {
			a := readArg()
			out += fmt.Sprintf("%v\t%v\t%v\t(%v)\n", pp, label, a, ip-int(a))
		argument := func(label string) {
			a := readArg()
			out += fmt.Sprintf("%v\t%v\t%v\n", pp, label, a)
		constant := func(label string) {
			a := readArg()
			var c interface{}
			if int(a) < len(program.Constants) {
				c = program.Constants[a]
			if r, ok := c.(*regexp.Regexp); ok {
				c = r.String()
			out += fmt.Sprintf("%v\t%v\t%v\t%#v\n", pp, label, a, c)
		switch op {
		case OpPush:
			constant("OpPush")
		case OpPop:
			code("OpPop")
		case OpRot:
			code("OpRot")
		case OpFetch:
			constant("OpFetch")
		case OpFetchMap:
			constant("OpFetchMap")
		case OpTrue:
			code("OpTrue")
		case OpFalse:
			code("OpFalse")
		case OpNil:
			code("OpNil")
		case OpNegate:
			code("OpNegate")
		case OpNot:
			code("OpNot")
		case OpEqual:
			code("OpEqual")
		case OpEqualInt:
			code("OpEqualInt")
		case OpEqualString:
			code("OpEqualString")
		case OpJump:
			jump("OpJump")
		case OpJumpIfTrue:
			jump("OpJumpIfTrue")
		case OpJumpIfFalse:
			jump("OpJumpIfFalse")
		case OpJumpBackward:
			back("OpJumpBackward")
		case OpIn:
			code("OpIn")
		case OpLess:
			code("OpLess")
		case OpMore:
			code("OpMore")
		case OpLessOrEqual:
			code("OpLessOrEqual")
		case OpMoreOrEqual:
			code("OpMoreOrEqual")
		case OpAdd:
			code("OpAdd")
		case OpSubtract:
			code("OpSubtract")
		case OpMultiply:
			code("OpMultiply")
		case OpDivide:
			code("OpDivide")
		case OpModulo:
			code("OpModulo")
		case OpExponent:
			code("OpExponent")
		case OpRange:
			code("OpRange")
		case OpMatches:
			code("OpMatches")
		case OpMatchesConst:
			constant("OpMatchesConst")
		case OpContains:
			code("OpContains")
		case OpStartsWith:
			code("OpStartsWith")
		case OpEndsWith:
			code("OpEndsWith")
		case OpIndex:
			code("OpIndex")
		case OpSlice:
			code("OpSlice")
		case OpProperty:
			constant("OpProperty")
		case OpCall:
			constant("OpCall")
		case OpCallFast:
			constant("OpCallFast")
		case OpMethod:
			constant("OpMethod")
		case OpArray:
			code("OpArray")
		case OpMap:
			code("OpMap")
		case OpLen:
			code("OpLen")
		case OpCast:
			argument("OpCast")
		case OpStore:
			constant("OpStore")
		case OpLoad:
			constant("OpLoad")
		case OpInc:
			constant("OpInc")
		case OpBegin:
			code("OpBegin")
		case OpEnd:
			code("OpEnd")
			out += fmt.Sprintf("%v\t%#x\n", pp, op)
	return out

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