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builtin.go
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builtin.go
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// Copyright 2021 Muvaffak Onus
//
// 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 cmd
import (
"fmt"
"go/types"
"github.com/pkg/errors"
"github.com/muvaf/typewriter/pkg/packages"
"github.com/muvaf/typewriter/pkg/traverser"
)
func NewProducers(cache *packages.Cache, im *packages.Imports) FuncGenerator {
return &Producers{
cache: cache,
imports: im,
}
}
// Producers generates a function for every merged type of the given type that will
// let you produce those remote types from the local one.
type Producers struct {
cache *packages.Cache
imports *packages.Imports
}
func (p *Producers) Generate(source *types.Named, cm *packages.CommentMarkers) (map[string]interface{}, error) {
merged := cm.SectionContents[packages.SectionMerged]
if len(merged) == 0 {
return nil, nil
}
result := ""
for _, target := range merged {
targetType, err := p.cache.GetTypeWithFullPath(target)
if err != nil {
return nil, errors.Wrap(err, "cannot get target type")
}
fn := traverser.NewPrinter(p.imports, traverser.NewGeneric(p.imports))
funcName := fmt.Sprintf("Generate%s", targetType.Obj().Name())
generated, err := fn.Print(funcName, source, targetType, nil)
if err != nil {
return nil, errors.Wrap(err, "cannot wrap function")
}
result += fmt.Sprintf("%s\n", generated)
}
return map[string]interface{}{
"Producers": result,
}, nil
}