148 lines
3.3 KiB
Go
148 lines
3.3 KiB
Go
//go:build !llgo
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// +build !llgo
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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 blocks
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import (
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"bytes"
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"fmt"
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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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"log"
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"os"
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"path"
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"strings"
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"testing"
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"github.com/goplus/gogen/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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llssa "github.com/goplus/llgo/ssa"
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)
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func TestTestdefer(t *testing.T) {
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fromDir(t, "", "../_testdefer", func(name string) string {
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if strings.HasPrefix(name, "firstloop") {
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return "Loop"
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}
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return "main"
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})
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}
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func TestFirstLoop(t *testing.T) {
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blk := &ssa.BasicBlock{}
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blk.Index = 0
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blk.Preds = []*ssa.BasicBlock{blk}
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blk.Succs = []*ssa.BasicBlock{blk}
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infos := Infos([]*ssa.BasicBlock{blk})
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if infos[0].Kind != llssa.DeferInLoop {
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t.Fatal("TestFirstLoop")
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}
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}
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func fromDir(t *testing.T, sel, relDir string, fn func(string) string) {
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dir, err := os.Getwd()
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if err != nil {
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t.Fatal("Getwd failed:", err)
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}
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dir = path.Join(dir, relDir)
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fis, err := os.ReadDir(dir)
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if err != nil {
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t.Fatal("ReadDir failed:", err)
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}
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for _, fi := range fis {
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name := fi.Name()
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if !fi.IsDir() || strings.HasPrefix(name, "_") {
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continue
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}
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t.Run(name, func(t *testing.T) {
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testFrom(t, dir+"/"+name, sel, fn(name))
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})
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}
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}
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func testFrom(t *testing.T, pkgDir, sel, fn string) {
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if sel != "" && !strings.Contains(pkgDir, sel) {
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return
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}
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log.Println("Parsing", pkgDir)
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in := pkgDir + "/in.go"
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out := pkgDir + "/out.txt"
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b, err := os.ReadFile(out)
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if err != nil {
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t.Fatal("ReadFile failed:", err)
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}
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expected := string(b)
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testBlockInfo(t, nil, in, expected, fn)
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}
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func testBlockInfo(t *testing.T, src any, fname, expected, fn string) {
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t.Helper()
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fset := token.NewFileSet()
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f, err := parser.ParseFile(fset, fname, src, parser.ParseComments)
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if err != nil {
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t.Fatal("ParseFile failed:", err)
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}
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files := []*ast.File{f}
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name := f.Name.Name
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pkg := types.NewPackage(name, name)
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imp := packages.NewImporter(fset)
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foo, _, err := ssautil.BuildPackage(
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&types.Config{Importer: imp}, fset, pkg, files, ssa.SanityCheckFunctions|ssa.InstantiateGenerics|ssa.GlobalDebug)
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if err != nil {
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t.Fatal("BuildPackage failed:", err)
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}
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foo.WriteTo(os.Stderr)
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for _, member := range foo.Members {
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switch f := member.(type) {
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case *ssa.Function:
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if f.Name() == fn {
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f.WriteTo(os.Stderr)
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infos := Infos(f.Blocks)
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if v := resultOf(infos); v != expected {
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t.Fatalf("\n==> got:\n%s\n==> expected:\n%s\n", v, expected)
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}
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return
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}
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}
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}
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}
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func resultOf(infos []Info) string {
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var b bytes.Buffer
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i := 0
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for {
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fmt.Fprintf(&b, "%2d: %s\n", i, kinds[infos[i].Kind])
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if i = infos[i].Next; i < 0 {
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break
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}
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}
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return b.String()
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}
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var kinds = [...]string{
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llssa.DeferAlways: "always",
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llssa.DeferInCond: "cond",
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llssa.DeferInLoop: "loop",
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}
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