/
typedef.go
110 lines (98 loc) · 3.63 KB
/
typedef.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/compile"
// typedefGenerator generates code to serialize and deserialize typedefs.
type typedefGenerator struct{}
func (t *typedefGenerator) Reader(g Generator, spec *compile.TypedefSpec) (string, error) {
name := readerFuncName(g, spec)
err := g.EnsureDeclared(
`
<$wire := import "go.uber.org/thriftrw/wire">
<$x := newVar "x">
<$w := newVar "w">
func <.Name>(<$w> <$wire>.Value) (<typeReference .Spec>, error) {
var <$x> <typeName .Spec>
err := <$x>.FromWire(<$w>)
<if isStructType .Spec.Target ->
return &<$x>, err
<- else ->
return <$x>, err
<- end>
}
`,
struct {
Name string
Spec *compile.TypedefSpec
}{Name: name, Spec: spec},
)
return name, wrapGenerateError(spec.ThriftName(), err)
}
// typedef generates code for the given typedef.
func typedef(g Generator, spec *compile.TypedefSpec) error {
err := g.DeclareFromTemplate(
`
<$fmt := import "fmt">
<$wire := import "go.uber.org/thriftrw/wire">
<$typedefType := typeReference .>
<formatDoc .Doc>type <typeName .> <typeName .Target>
<$v := newVar "v">
<$x := newVar "x">
// ToWire translates <typeName .> into a Thrift-level intermediate
// representation. This intermediate representation may be serialized
// into bytes using a ThriftRW protocol implementation.
func (<$v> <$typedefType>) ToWire() (<$wire>.Value, error) {
<$x> := (<typeReference .Target>)(<$v>)
return <toWire .Target $x>
}
// String returns a readable string representation of <typeName .>.
func (<$v> <$typedefType>) String() string {
<$x> := (<typeReference .Target>)(<$v>)
return <$fmt>.Sprint(<$x>)
}
<$w := newVar "w">
// FromWire deserializes <typeName .> from its Thrift-level
// representation. The Thrift-level representation may be obtained
// from a ThriftRW protocol implementation.
func (<$v> *<typeName .>) FromWire(<$w> <$wire>.Value) error {
<if isStructType . ->
return (<typeReference .Target>)(<$v>).FromWire(<$w>)
<- else ->
<$x>, err := <fromWire .Target $w>
*<$v> = (<$typedefType>)(<$x>)
return err
<- end>
}
<$lhs := newVar "lhs">
<$rhs := newVar "rhs">
// Equals returns true if this <typeName .> is equal to the provided
// <typeName .>.
func (<$lhs> <$typedefType>) Equals(<$rhs> <$typedefType>) bool {
<if isStructType . ->
return (<typeReference .Target>)(<$lhs>).Equals((<typeReference .Target>)(<$rhs>))
<- else ->
return <equals .Target $lhs $rhs>
<- end>
}
`,
spec,
)
return wrapGenerateError(spec.Name, err)
}