97 lines
1.3 KiB
Go
97 lines
1.3 KiB
Go
package jsonpath
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// Integer Stack
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type intStack struct {
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values []int
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}
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func newIntStack() *intStack {
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return &intStack{
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values: make([]int, 0, 100),
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}
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}
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func (s *intStack) len() int {
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return len(s.values)
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}
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func (s *intStack) push(r int) {
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s.values = append(s.values, r)
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}
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func (s *intStack) pop() (int, bool) {
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if s.len() == 0 {
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return 0, false
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}
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v, _ := s.peek()
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s.values = s.values[:len(s.values)-1]
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return v, true
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}
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func (s *intStack) peek() (int, bool) {
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if s.len() == 0 {
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return 0, false
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}
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v := s.values[len(s.values)-1]
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return v, true
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}
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// Interface Stack
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type stack struct {
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values []interface{}
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}
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func newStack() *stack {
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return &stack{
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values: make([]interface{}, 0, 100),
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}
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}
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func (s *stack) len() int {
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return len(s.values)
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}
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func (s *stack) push(r interface{}) {
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s.values = append(s.values, r)
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}
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func (s *stack) pop() (interface{}, bool) {
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if s.len() == 0 {
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return nil, false
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}
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v, _ := s.peek()
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s.values = s.values[:len(s.values)-1]
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return v, true
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}
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func (s *stack) peek() (interface{}, bool) {
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if s.len() == 0 {
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return nil, false
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}
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v := s.values[len(s.values)-1]
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return v, true
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}
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func (s *stack) clone() *stack {
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d := stack{
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values: make([]interface{}, s.len()),
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}
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copy(d.values, s.values)
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return &d
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}
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func (s *stack) toArray() []interface{} {
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return s.values
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}
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