forked from sridharv/gomobile-java
/
bind.go
129 lines (119 loc) · 2.44 KB
/
bind.go
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// Copyright 2014 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package bind implements a code generator for gobind.
//
// See the documentation on the gobind command for usage details
// and the list of currently supported types.
// (http://godoc.org/golang.org/x/mobile/cmd/gobind)
package bind
// TODO(crawshaw): slice support
// TODO(crawshaw): channel support
import (
"bytes"
"go/format"
"go/token"
"go/types"
"io"
)
type (
GeneratorConfig struct {
Writer io.Writer
Fset *token.FileSet
Pkg *types.Package
AllPkg []*types.Package
}
fileType int
)
const (
Java fileType = iota
JavaC
JavaH
ObjcM
ObjcH
ObjcGoH
)
// GenJava generates a Java API from a Go package.
func GenJava(conf *GeneratorConfig, javaPkg string, ft fileType) error {
buf := new(bytes.Buffer)
g := &javaGen{
javaPkg: javaPkg,
generator: &generator{
printer: &printer{buf: buf, indentEach: []byte(" ")},
fset: conf.Fset,
allPkg: conf.AllPkg,
pkg: conf.Pkg,
},
}
g.init()
var err error
switch ft {
case Java:
err = g.genJava()
case JavaC:
err = g.genC()
case JavaH:
err = g.genH()
default:
panic("invalid fileType")
}
if err != nil {
return err
}
_, err = io.Copy(conf.Writer, buf)
return err
}
// GenGo generates a Go stub to support foreign language APIs.
func GenGo(conf *GeneratorConfig) error {
buf := new(bytes.Buffer)
g := &goGen{
generator: &generator{
printer: &printer{buf: buf, indentEach: []byte("\t")},
fset: conf.Fset,
allPkg: conf.AllPkg,
pkg: conf.Pkg,
},
}
g.init()
if err := g.gen(); err != nil {
return err
}
src := buf.Bytes()
srcf, err := format.Source(src)
if err != nil {
conf.Writer.Write(src) // for debugging
return err
}
_, err = conf.Writer.Write(srcf)
return err
}
// GenObjc generates the Objective-C API from a Go package.
func GenObjc(conf *GeneratorConfig, prefix string, ft fileType) error {
buf := new(bytes.Buffer)
g := &objcGen{
generator: &generator{
printer: &printer{buf: buf, indentEach: []byte("\t")},
fset: conf.Fset,
allPkg: conf.AllPkg,
pkg: conf.Pkg,
},
prefix: prefix,
}
g.init()
var err error
switch ft {
case ObjcH:
err = g.genH()
case ObjcM:
err = g.genM()
case ObjcGoH:
err = g.genGoH()
default:
panic("invalid fileType")
}
if err != nil {
return err
}
_, err = io.Copy(conf.Writer, buf)
return err
}