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typeacceptor.go
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/
typeacceptor.go
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// Copyright 2023 amanofbits
//
// 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 main
import (
"errors"
"fmt"
"go/ast"
"github.com/amanofbits/simser/internal/domain"
"golang.org/x/exp/maps"
)
type typeAcceptor map[string]uint8
func newTypeAcceptor(rawTypeList []string) (*typeAcceptor, error) {
if len(rawTypeList) == 0 {
return nil, errors.New("no input types")
}
st := map[string]uint8{}
for _, v := range rawTypeList {
if v == "" {
return nil, errors.Join(domain.ErrUnsupportedType, errors.New("empty type name in type list"))
}
st[v] = 0
}
return (*typeAcceptor)(&st), nil
}
func (st *typeAcceptor) Accepts(ts *ast.TypeSpec) bool {
if _, all := (*st)["all"]; len(*st) == 1 && all {
return true
}
_, ok := (*st)[ts.Name.Name]
if ok {
delete(*st, ts.Name.Name)
}
return ok
}
func (ts typeAcceptor) IsDrained() bool {
return len(ts) == 0
}
func (ta typeAcceptor) AcceptsAll() bool {
_, hasAll := ta["all"]
return len(ta) == 1 && hasAll
}
func (ts typeAcceptor) String() string { return fmt.Sprintf("%s", maps.Keys(ts)) }