/
default_effector.go
45 lines (37 loc) · 1.36 KB
/
default_effector.go
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// Copyright 2018 The casbin Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package effect
// DefaultEffector is default effector for Casbin.
type DefaultEffector struct {
}
// NewDefaultEffector is the constructor for DefaultEffector.
func NewDefaultEffector() *DefaultEffector {
e := DefaultEffector{}
return &e
}
func (e *DefaultEffector) NewStream(expr string, cap int) EffectorStream {
if !(cap > 0) {
panic("cap should be greater than 0")
}
var res bool
if expr == "some(where (p_eft == allow))" || expr == "some(where (p_eft == allow)) && !some(where (p_eft == deny))" || expr == "priority(p_eft) || deny" {
res = false
} else if expr == "!some(where (p_eft == deny))" {
res = true
} else {
panic("unsupported effect: " + expr)
}
des := &DefaultEffectorStream{false, res, expr, 0, cap, make([]int, 0)}
return des
}