1 files changed, 220 insertions, 0 deletions
diff --git a/test/stress/parsego.go b/test/stress/parsego.go
new file mode 100644
index 000000000..a781f1993
--- /dev/null
+++ b/test/stress/parsego.go
@@ -0,0 +1,220 @@
+// Copyright 2013 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 main
+
+import (
+	"go/ast"
+	"go/parser"
+	"go/token"
+	"os"
+	"path"
+	"runtime"
+	"strings"
+)
+
+func isGoFile(dir os.FileInfo) bool {
+	return !dir.IsDir() &&
+		!strings.HasPrefix(dir.Name(), ".") && // ignore .files
+		path.Ext(dir.Name()) == ".go"
+}
+
+func isPkgFile(dir os.FileInfo) bool {
+	return isGoFile(dir) &&
+		!strings.HasSuffix(dir.Name(), "_test.go") // ignore test files
+}
+
+func pkgName(filename string) string {
+	file, err := parser.ParseFile(token.NewFileSet(), filename, nil, parser.PackageClauseOnly)
+	if err != nil || file == nil {
+		return ""
+	}
+	return file.Name.Name
+}
+
+func parseDir(dirpath string) map[string]*ast.Package {
+	// the package name is the directory name within its parent.
+	// (use dirname instead of path because dirname is clean; it
+	// has no trailing '/')
+	_, pkgname := path.Split(dirpath)
+
+	// filter function to select the desired .go files
+	filter := func(d os.FileInfo) bool {
+		if isPkgFile(d) {
+			// Some directories contain main packages: Only accept
+			// files that belong to the expected package so that
+			// parser.ParsePackage doesn't return "multiple packages
+			// found" errors.
+			// Additionally, accept the special package name
+			// fakePkgName if we are looking at cmd documentation.
+			name := pkgName(dirpath + "/" + d.Name())
+			return name == pkgname
+		}
+		return false
+	}
+
+	// get package AST
+	pkgs, err := parser.ParseDir(token.NewFileSet(), dirpath, filter, parser.ParseComments)
+	if err != nil {
+		println("parse", dirpath, err.Error())
+		panic("go ParseDir fail: " + err.Error())
+	}
+	return pkgs
+}
+
+func stressParseGo() {
+	pkgroot := runtime.GOROOT() + "/src/pkg/"
+	for {
+		m := make(map[string]map[string]*ast.Package)
+		for _, pkg := range packages {
+			m[pkg] = parseDir(pkgroot + pkg)
+			Println("parsed go package", pkg)
+		}
+	}
+}
+
+// find . -type d -not -path "./exp" -not -path "./exp/*" -printf "\t\"%p\",\n" | sort | sed "s/\.\///" | grep -v testdata
+var packages = []string{
+	"archive",
+	"archive/tar",
+	"archive/zip",
+	"bufio",
+	"builtin",
+	"bytes",
+	"compress",
+	"compress/bzip2",
+	"compress/flate",
+	"compress/gzip",
+	"compress/lzw",
+	"compress/zlib",
+	"container",
+	"container/heap",
+	"container/list",
+	"container/ring",
+	"crypto",
+	"crypto/aes",
+	"crypto/cipher",
+	"crypto/des",
+	"crypto/dsa",
+	"crypto/ecdsa",
+	"crypto/elliptic",
+	"crypto/hmac",
+	"crypto/md5",
+	"crypto/rand",
+	"crypto/rc4",
+	"crypto/rsa",
+	"crypto/sha1",
+	"crypto/sha256",
+	"crypto/sha512",
+	"crypto/subtle",
+	"crypto/tls",
+	"crypto/x509",
+	"crypto/x509/pkix",
+	"database",
+	"database/sql",
+	"database/sql/driver",
+	"debug",
+	"debug/dwarf",
+	"debug/elf",
+	"debug/gosym",
+	"debug/macho",
+	"debug/pe",
+	"encoding",
+	"encoding/ascii85",
+	"encoding/asn1",
+	"encoding/base32",
+	"encoding/base64",
+	"encoding/binary",
+	"encoding/csv",
+	"encoding/gob",
+	"encoding/hex",
+	"encoding/json",
+	"encoding/pem",
+	"encoding/xml",
+	"errors",
+	"expvar",
+	"flag",
+	"fmt",
+	"go",
+	"go/ast",
+	"go/build",
+	"go/doc",
+	"go/format",
+	"go/parser",
+	"go/printer",
+	"go/scanner",
+	"go/token",
+	"hash",
+	"hash/adler32",
+	"hash/crc32",
+	"hash/crc64",
+	"hash/fnv",
+	"html",
+	"html/template",
+	"image",
+	"image/color",
+	"image/draw",
+	"image/gif",
+	"image/jpeg",
+	"image/png",
+	"index",
+	"index/suffixarray",
+	"io",
+	"io/ioutil",
+	"log",
+	"log/syslog",
+	"math",
+	"math/big",
+	"math/cmplx",
+	"math/rand",
+	"mime",
+	"mime/multipart",
+	"net",
+	"net/http",
+	"net/http/cgi",
+	"net/http/cookiejar",
+	"net/http/fcgi",
+	"net/http/httptest",
+	"net/http/httputil",
+	"net/http/pprof",
+	"net/mail",
+	"net/rpc",
+	"net/rpc/jsonrpc",
+	"net/smtp",
+	"net/textproto",
+	"net/url",
+	"os",
+	"os/exec",
+	"os/signal",
+	"os/user",
+	"path",
+	"path/filepath",
+	"reflect",
+	"regexp",
+	"regexp/syntax",
+	"runtime",
+	"runtime/cgo",
+	"runtime/debug",
+	"runtime/pprof",
+	"runtime/race",
+	"sort",
+	"strconv",
+	"strings",
+	"sync",
+	"sync/atomic",
+	"syscall",
+	"testing",
+	"testing/iotest",
+	"testing/quick",
+	"text",
+	"text/scanner",
+	"text/tabwriter",
+	"text/template",
+	"text/template/parse",
+	"time",
+	"unicode",
+	"unicode/utf16",
+	"unicode/utf8",
+	"unsafe",
+}