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struct.go
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struct.go
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// Copyright (c) 2018 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package gen
import (
"go.uber.org/thriftrw/ast"
"go.uber.org/thriftrw/compile"
)
// structGenerator generates code to serialize and deserialize structs.
type structGenerator struct{}
func (s *structGenerator) Reader(g Generator, spec *compile.StructSpec) (string, error) {
name := readerFuncName(g, spec)
err := g.EnsureDeclared(
`
<$wire := import "go.uber.org/thriftrw/wire">
<$v := newVar "v">
<$w := newVar "w">
func <.Name>(<$w> <$wire>.Value) (<typeReference .Spec>, error) {
var <$v> <typeName .Spec>
err := <$v>.FromWire(<$w>)
return &<$v>, err
}
`,
struct {
Name string
Spec *compile.StructSpec
}{Name: name, Spec: spec},
)
return name, wrapGenerateError(spec.ThriftName(), err)
}
func structure(g Generator, spec *compile.StructSpec) error {
name, err := goName(spec)
if err != nil {
return err
}
fg := fieldGroupGenerator{
Namespace: NewNamespace(),
Name: name,
Doc: spec.Doc,
Fields: spec.Fields,
IsUnion: spec.Type == ast.UnionType,
IsException: spec.Type == ast.ExceptionType,
}
if err := fg.Generate(g); err != nil {
return wrapGenerateError(spec.ThriftName(), err)
}
if spec.Type == ast.ExceptionType {
err := g.DeclareFromTemplate(
`
<$v := newVar "v">
func (<$v> *<typeName .>) Error() string {
return <$v>.String()
}
`, spec)
if err != nil {
return wrapGenerateError(spec.ThriftName(), err)
}
}
return nil
// TODO(abg): For all struct types, handle the case where fields are named
// ToWire or FromWire.
// TODO(abg): For exceptions, handle the case where a field is named
// Error.
}