/
run.go
351 lines (336 loc) · 8.22 KB
/
run.go
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package interp
import (
"errors"
"flag"
"fmt"
"go/ast"
"go/build"
"go/importer"
"go/parser"
"go/token"
"go/types"
"os"
"path/filepath"
"reflect"
"strconv"
"strings"
"time"
"github.com/goplus/interp/internal/gopfile"
"github.com/goplus/reflectx"
"golang.org/x/tools/go/packages"
"golang.org/x/tools/go/ssa"
"golang.org/x/tools/go/ssa/ssautil"
)
var (
ErrNoPackage = errors.New("no package")
ErrPackage = errors.New("package contain errors")
ErrNotFoundMain = errors.New("not found main package")
)
var (
UnsafeSizes types.Sizes
)
// func loadFile2(input string, src interface{}) (*ssa.Package, error) {
// if !filepath.IsAbs(input) {
// wd, _ := os.Getwd()
// input = filepath.Join(wd, input)
// }
// const mode = parser.AllErrors | parser.ParseComments
// fset := token.NewFileSet()
// f, err := parser.ParseFile(fset, input, src, mode)
// if err != nil {
// return nil, err
// }
// cfg := &loader.Config{}
// cfg.Fset = fset
// cfg.CreateFromFiles(input, f)
// iprog, err := cfg.Load()
// if err != nil {
// return nil, err
// }
// prog := ssautil.CreateProgram(iprog, ssa.SanityCheckFunctions)
// prog.Build()
// var mainPkg *ssa.Package
// if len(iprog.Created) > 0 {
// mainPkg = prog.Package(iprog.Created[0].Pkg)
// } else {
// if pkgs := ssautil.MainPackages(prog.AllPackages()); len(pkgs) > 0 {
// mainPkg = pkgs[0]
// }
// }
// if mainPkg == nil {
// return nil, ErrNotFoundMain
// }
// return mainPkg, nil
// }
func loadFile(input string, src interface{}) (*ssa.Package, error) {
if !filepath.IsAbs(input) {
wd, _ := os.Getwd()
input = filepath.Join(wd, input)
}
const mode = parser.AllErrors | parser.ParseComments
fset := token.NewFileSet()
f, err := parser.ParseFile(fset, input, src, mode)
if err != nil {
return nil, err
}
if f.Name.Name != "main" {
return nil, ErrNotFoundMain
}
var hasOtherPkgs bool
for _, im := range f.Imports {
v, _ := strconv.Unquote(im.Path.Value)
if !externPackages[v] {
hasOtherPkgs = true
break
}
}
if !hasOtherPkgs {
pkg := types.NewPackage("main", "")
var chkerr error
ssapkg, _, err := ssautil.BuildPackage(&types.Config{
Importer: importer.Default(),
Error: func(err error) {
fmt.Fprintln(os.Stderr, err)
chkerr = ErrPackage
},
}, fset, pkg, []*ast.File{f}, 0) //ssa.SanityCheckFunctions)
if chkerr != nil {
return nil, chkerr
}
if err != nil {
return nil, err
}
ssapkg.Build()
return ssapkg, nil
}
cfg := &packages.Config{
Fset: fset,
Mode: packages.NeedName | packages.NeedDeps | packages.LoadTypes | packages.NeedSyntax | packages.NeedTypesInfo | packages.NeedTypesSizes,
}
cfg.ParseFile = func(fset *token.FileSet, filename string, src []byte) (*ast.File, error) {
if filename == input {
return f, nil
}
return parser.ParseFile(fset, filename, src, mode)
}
list, err := packages.Load(cfg, input)
if err != nil {
return nil, err
}
if len(list) == 0 {
return nil, ErrNoPackage
}
if packages.PrintErrors(list) > 0 {
return nil, ErrPackage
}
list[0].ID = "main"
list[0].PkgPath = "main"
// hack fix types.Types.Path() command-line-arguments
v := reflect.ValueOf(list[0].Types).Elem()
reflectx.Field(v, 0).SetString("main")
prog, pkgs := ssautil.AllPackages(list, ssa.SanityCheckFunctions)
prog.Build()
mainPkgs := ssautil.MainPackages(pkgs)
if len(mainPkgs) == 0 {
return nil, ErrNotFoundMain
}
return mainPkgs[0], nil
}
func loadPkg(input string) (*ssa.Package, error) {
wd, _ := os.Getwd()
p, err := build.Import(input, wd, 0)
if err != nil {
return nil, err
}
if p.Name != "main" {
return nil, ErrNotFoundMain
}
var hasOtherPkgs bool
for _, im := range p.Imports {
if !externPackages[im] {
hasOtherPkgs = true
break
}
}
if !hasOtherPkgs {
const mode = parser.AllErrors | parser.ParseComments
fset := token.NewFileSet()
var files []*ast.File
for _, fname := range p.GoFiles {
filename := filepath.Join(p.Dir, fname)
f, err := parser.ParseFile(fset, filename, nil, mode)
if err != nil {
return nil, err
}
files = append(files, f)
}
pkg := types.NewPackage("main", "")
var chkerr error
ssapkg, _, err := ssautil.BuildPackage(&types.Config{
Importer: importer.Default(),
Error: func(err error) {
fmt.Fprintln(os.Stderr, err)
chkerr = ErrPackage
},
}, fset, pkg, files, ssa.SanityCheckFunctions)
if chkerr != nil {
return nil, chkerr
}
if err != nil {
return nil, err
}
ssapkg.Build()
return ssapkg, nil
}
cfg := &packages.Config{
Mode: packages.NeedName | packages.NeedDeps | packages.LoadTypes | packages.NeedSyntax | packages.NeedTypesInfo | packages.NeedTypesSizes,
}
list, err := packages.Load(cfg, input)
if err != nil {
return nil, err
}
if len(list) == 0 {
return nil, ErrNoPackage
}
if packages.PrintErrors(list) > 0 {
return nil, ErrPackage
}
prog, pkgs := ssautil.AllPackages(list, ssa.SanityCheckFunctions)
prog.Build()
mainPkgs := ssautil.MainPackages(pkgs)
if len(mainPkgs) == 0 {
return nil, ErrNotFoundMain
}
return mainPkgs[0], nil
}
func Run(mode Mode, input string, args []string) error {
if strings.HasSuffix(input, ".go") {
return RunFile(mode, input, nil, args)
}
pkg, err := loadPkg(input)
if err != nil {
return err
}
return RunPkg(pkg, mode, input, "main", args)
}
func foundPkg(pkg string) (*build.Package, error) {
if filepath.IsAbs(pkg) {
return build.ImportDir(pkg, build.FindOnly)
} else {
return build.Import(pkg, ".", build.FindOnly)
}
}
func RunTest(mode Mode, input string, args []string) error {
p, err := foundPkg(input)
if err != nil {
return fmt.Errorf("not found pkg: %v", err)
}
if p.Dir != "." {
os.Chdir(p.Dir)
}
pkgpath, pkgs, err := LoadTest(".")
if err != nil {
return err
}
if len(pkgs) == 0 {
fmt.Printf("?\t%s [no test files]\n", pkgpath)
return nil
}
RunTestPkg(pkgs, mode, pkgpath, args)
return nil
}
func RunFile(mode Mode, filename string, src interface{}, args []string) error {
ext := filepath.Ext(filename)
switch ext {
case ".gop":
data, err := gopfile.Build(filename, src)
if err != nil {
return err
}
src = data
}
pkg, err := loadFile(filename, src)
if err != nil {
return err
}
return RunPkg(pkg, mode, filename, "main", args)
}
func LoadTest(input string) (string, []*ssa.Package, error) {
cfg := &packages.Config{
Mode: packages.NeedName | packages.NeedDeps | packages.LoadTypes | packages.NeedSyntax | packages.NeedTypesInfo | packages.NeedTypesSizes,
Tests: true,
}
list, err := packages.Load(cfg, input)
if err != nil {
return "", nil, err
}
var foundError bool
for _, v := range list {
if len(v.Errors) > 0 {
for _, err := range v.Errors {
fmt.Fprintln(os.Stderr, err)
}
foundError = true
}
}
if foundError {
return "", nil, errors.New("build failed")
}
prog, ppkgs := ssautil.AllPackages(list, ssa.SanityCheckFunctions)
prog.Build()
var pkgs []*ssa.Package
for _, p := range ppkgs {
if p == nil {
continue
}
pkgs = append(pkgs, p)
}
if len(pkgs) == 0 {
return "", nil, errors.New("not found package")
}
return pkgs[0].Pkg.Path(), pkgs, nil
}
func RunTestPkg(pkgs []*ssa.Package, mode Mode, input string, args []string) {
var testPkgs []*ssa.Package
for _, pkg := range pkgs {
if p := CreateTestMainPackage(pkg); p != nil {
testPkgs = append(testPkgs, p)
}
}
os.Args = []string{input}
if args != nil {
os.Args = append(os.Args, args...)
}
var failed bool
start := time.Now()
defer func() {
sec := time.Since(start).Seconds()
if failed {
fmt.Printf("FAIL\t%s %0.3fs\n", input, sec)
} else {
fmt.Printf("ok\t%s %0.3fs\n", input, sec)
}
}()
if len(testPkgs) == 0 {
fmt.Println("testing: warning: no tests to run")
}
for _, pkg := range testPkgs {
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
if code := Interpret(pkg, mode, "main"); code != 0 {
failed = true
}
}
}
func RunPkg(mainPkg *ssa.Package, mode Mode, input string, entry string, args []string) error {
// reset os args and flag
os.Args = []string{input}
if args != nil {
os.Args = append(os.Args, args...)
}
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
exitCode := Interpret(mainPkg, mode, entry)
if exitCode != 0 {
return fmt.Errorf("interpreting %v: exit code was %d", input, exitCode)
}
return nil
}