102 lines
2.2 KiB
Go
102 lines
2.2 KiB
Go
/*
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* Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package llgen
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import (
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"go/ast"
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"go/parser"
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"go/token"
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"go/types"
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"os"
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"github.com/goplus/gogen/packages"
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"github.com/goplus/llgo/cl"
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"github.com/goplus/llgo/internal/mod"
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"golang.org/x/tools/go/ssa"
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"golang.org/x/tools/go/ssa/ssautil"
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llssa "github.com/goplus/llgo/ssa"
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)
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func Init() {
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llssa.Initialize(llssa.InitAll)
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llssa.SetDebug(llssa.DbgFlagAll)
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cl.SetDebug(cl.DbgFlagAll)
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}
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func PkgPath(dir string) string {
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_, pkgPath, err := mod.Load(dir)
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check(err)
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return pkgPath
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}
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func Do(pkgPath, inFile, outFile string) {
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ret := Gen(pkgPath, inFile, nil)
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err := os.WriteFile(outFile, []byte(ret), 0644)
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check(err)
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}
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func Gen(pkgPath, inFile string, src any) string {
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fset := token.NewFileSet()
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f, err := parser.ParseFile(fset, inFile, src, parser.ParseComments)
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check(err)
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files := []*ast.File{f}
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name := f.Name.Name
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if pkgPath == "" {
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pkgPath = name
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}
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pkg := types.NewPackage(pkgPath, name)
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imp := packages.NewImporter(fset)
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ssaPkg, _, err := ssautil.BuildPackage(
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&types.Config{Importer: imp}, fset, pkg, files, ssa.SanityCheckFunctions|ssa.InstantiateGenerics)
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check(err)
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if Verbose {
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ssaPkg.WriteTo(os.Stderr)
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}
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prog := llssa.NewProgram(nil)
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prog.SetRuntime(func() *types.Package {
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ret, _ := imp.Import(llssa.PkgRuntime)
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return ret
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})
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prog.SetPython(func() *types.Package {
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ret, _ := imp.Import(llssa.PkgPython)
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return ret
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})
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ret, err := cl.NewPackage(prog, ssaPkg, files)
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check(err)
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if prog.NeedPyInit { // call PyInit if needed
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ret.PyInit()
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}
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return ret.String()
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}
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func check(err error) {
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if err != nil {
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panic(err)
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}
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}
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var (
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Verbose = true
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)
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