96 lines
2.4 KiB
Go
96 lines
2.4 KiB
Go
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/*
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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 build
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import (
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"log"
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"os"
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"strings"
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"golang.org/x/tools/go/packages"
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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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"github.com/goplus/llgo/cl"
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llssa "github.com/goplus/llgo/ssa"
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)
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type Mode int
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const (
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ModeBuild Mode = iota
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ModeInstall
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)
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// -----------------------------------------------------------------------------
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const (
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loadFiles = packages.NeedName | packages.NeedFiles | packages.NeedCompiledGoFiles
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loadImports = loadFiles | packages.NeedImports
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loadTypes = loadImports | packages.NeedTypes | packages.NeedTypesSizes
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loadSyntax = loadTypes | packages.NeedSyntax | packages.NeedTypesInfo
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)
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func Do(args []string, mode Mode) {
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flags, patterns := parseArgs(args)
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cfg := &packages.Config{
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Mode: loadSyntax | packages.NeedExportFile,
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BuildFlags: flags,
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}
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if patterns == nil {
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patterns = []string{"."}
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}
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initial, err := packages.Load(cfg, patterns...)
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check(err)
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// Create SSA-form program representation.
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_, ssaPkgs := ssautil.AllPackages(initial, ssa.SanityCheckFunctions)
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llssa.Initialize(llssa.InitAll)
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prog := llssa.NewProgram(nil)
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for i, ssaPkg := range ssaPkgs {
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pkg := initial[i]
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if ssaPkg == nil { // TODO(xsw): error handling
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log.Panicf("cannot build SSA for package %s", pkg)
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}
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ssaPkg.Build()
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ret, err := cl.NewPackage(prog, ssaPkg, pkg.Syntax)
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check(err)
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if mode == ModeInstall {
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os.WriteFile(pkg.ExportFile+".ll", []byte(ret.String()), 0644)
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}
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}
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}
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func parseArgs(args []string) (flags, patterns []string) {
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for i, arg := range args {
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if !strings.HasPrefix(arg, "-") {
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return args[:i], args[i:]
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}
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}
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return args, nil
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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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// -----------------------------------------------------------------------------
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