c6cd0e0c21
1) Added new file map.go, map_test.go 2) Added Map, Hash Method to Item interface 3) Implemented Hash Method for every stack items (Boolean, Array, Int, ...)
56 lines
1.3 KiB
Go
56 lines
1.3 KiB
Go
package stack
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import (
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"fmt"
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)
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// Boolean represents a boolean value on the stack
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type Boolean struct {
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*abstractItem
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val bool
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}
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//NewBoolean returns a new boolean stack item
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func NewBoolean(val bool) *Boolean {
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return &Boolean{
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&abstractItem{},
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val,
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}
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}
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// Boolean overrides the default implementation
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// by the abstractItem, returning a Boolean struct
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func (b *Boolean) Boolean() (*Boolean, error) {
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return b, nil
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}
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// Value returns the underlying boolean value
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func (b *Boolean) Value() bool {
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return b.val
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}
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// Not returns a Boolean whose underlying value is flipped.
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// If the value is True, it is flipped to False and viceversa
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func (b *Boolean) Not() *Boolean {
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return NewBoolean(!b.Value())
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}
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// And returns a Boolean whose underlying value is obtained
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// by applying the && operator to two Booleans' values.
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func (b *Boolean) And(a *Boolean) *Boolean {
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c := b.Value() && a.Value()
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return NewBoolean(c)
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}
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// Or returns a Boolean whose underlying value is obtained
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// by applying the || operator to two Booleans' values.
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func (b *Boolean) Or(a *Boolean) *Boolean {
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c := b.Value() || a.Value()
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return NewBoolean(c)
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}
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// Hash overrides the default abstract hash method.
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func (b *Boolean) Hash() (string, error) {
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data := fmt.Sprintf("%T %v", b, b.Value())
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return KeyGenerator([]byte(data))
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}
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