How to use Parse method of ast Package

Best Syzkaller code snippet using ast.Parse

parser.go

Source:parser.go Github

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1// Copyright 2009 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE_GO file.4// Package parser implements a parser for Go source files. Input may be5// provided in a variety of forms (see the various Parse* functions); the6// output is an abstract syntax tree (AST) representing the Go source. The7// parser is invoked through one of the Parse* functions.8//9package parser10import (11 "fmt"12 "relish/compiler/ast"13 "relish/compiler/scanner"14 "relish/compiler/token"15)16// The mode parameter to the Parse* functions is a set of flags (or 0).17// They control the amount of source code parsed and other optional18// parser functionality.19//20const (21 PackageClauseOnly uint = 1 << iota // parsing stops after package clause22 ImportsOnly // parsing stops after import declarations23 ParseComments // parse comments and add them to AST24 Trace // print a trace of parsed productions25 DeclarationErrors // report declaration errors26)27// The parser structure holds the parser's internal state.28type parser struct {29 file *token.File30 scanner.ErrorVector31 scanner scanner.Scanner32 // Tracing/debugging33 mode uint // parsing mode34 trace bool // == (mode & Trace != 0)35 indent uint // indentation used for tracing output36 // Comments37 comments []*ast.CommentGroup38 leadComment *ast.CommentGroup // last lead comment39 lineComment *ast.CommentGroup // last line comment40 // Next token41 pos token.Pos // token position42 tok token.Token // one token look-ahead43 lit string // token literal44 // Non-syntactic parser control45 exprLev int // < 0: in control clause, >= 0: in expression46 // Ordinary identifer scopes47 pkgScope *ast.Scope // pkgScope.Outer == nil48 topScope *ast.Scope // top-most scope; may be pkgScope49 unresolved []*ast.Ident // unresolved identifiers50 imports []*ast.ImportSpec // list of imports51 // Label scope52 // (maintained by open/close LabelScope)53 labelScope *ast.Scope // label scope for current function54 targetStack [][]*ast.Ident // stack of unresolved labels55}56// scannerMode returns the scanner mode bits given the parser's mode bits.57func scannerMode(mode uint) uint {58 var m uint = scanner.InsertSemis59 if mode&ParseComments != 0 {60 m |= scanner.ScanComments61 }62 return m63}64func (p *parser) init(fset *token.FileSet, filename string, src []byte, mode uint) {65 p.file = fset.AddFile(filename, fset.Base(), len(src))66 p.scanner.Init(p.file, src, p, scannerMode(mode))67 p.mode = mode68 p.trace = mode&Trace != 0 // for convenience (p.trace is used frequently)69 p.next()70 // set up the pkgScope here (as opposed to in parseFile) because71 // there are other parser entry points (ParseExpr, etc.)72 p.openScope()73 p.pkgScope = p.topScope74 // for the same reason, set up a label scope75 p.openLabelScope()76}77// ----------------------------------------------------------------------------78// Scoping support79func (p *parser) openScope() {80 p.topScope = ast.NewScope(p.topScope)81}82func (p *parser) closeScope() {83 p.topScope = p.topScope.Outer84}85func (p *parser) openLabelScope() {...

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package_text.go

Source:package_text.go Github

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1package gocode2import (3 "bytes"4 "errors"5 "fmt"6 "go/ast"7 "go/token"8 "strconv"9 "text/scanner"10)11//-------------------------------------------------------------------------12// gc_parser13//14// The following part of the code may contain portions of the code from the Go15// standard library, which tells me to retain their copyright notice:16//17// Copyright (c) 2009 The Go Authors. All rights reserved.18//19// Redistribution and use in source and binary forms, with or without20// modification, are permitted provided that the following conditions are21// met:22//23// * Redistributions of source code must retain the above copyright24// notice, this list of conditions and the following disclaimer.25// * Redistributions in binary form must reproduce the above26// copyright notice, this list of conditions and the following disclaimer27// in the documentation and/or other materials provided with the28// distribution.29// * Neither the name of Google Inc. nor the names of its30// contributors may be used to endorse or promote products derived from31// this software without specific prior written permission.32//33// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS34// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT35// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR36// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT37// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,38// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT39// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,40// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY41// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT42// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE43// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.44//-------------------------------------------------------------------------45type gc_parser struct {46 scanner scanner.Scanner47 tok rune48 lit string49 path_to_name map[string]string50 beautify bool51 pfc *package_file_cache52}53func (p *gc_parser) init(data []byte, pfc *package_file_cache) {54 p.scanner.Init(bytes.NewReader(data))55 p.scanner.Error = func(_ *scanner.Scanner, msg string) { p.error(msg) }56 p.scanner.Mode = scanner.ScanIdents | scanner.ScanInts | scanner.ScanStrings |57 scanner.ScanComments | scanner.ScanChars | scanner.SkipComments58 p.scanner.Whitespace = 1<<'\t' | 1<<' ' | 1<<'\r' | 1<<'\v' | 1<<'\f'59 p.scanner.Filename = "package.go"60 p.next()61 // and the built-in "unsafe" package to the path_to_name map62 p.path_to_name = map[string]string{"unsafe": "unsafe"}63 p.pfc = pfc64}65func (p *gc_parser) next() {66 p.tok = p.scanner.Scan()67 switch p.tok {68 case scanner.Ident, scanner.Int, scanner.String:69 p.lit = p.scanner.TokenText()70 default:71 p.lit = ""72 }73}74func (p *gc_parser) error(msg string) {75 panic(errors.New(msg))76}77func (p *gc_parser) errorf(format string, args ...interface{}) {78 p.error(fmt.Sprintf(format, args...))79}80func (p *gc_parser) expect(tok rune) string {81 lit := p.lit82 if p.tok != tok {83 p.errorf("expected %s, got %s (%q)", scanner.TokenString(tok),84 scanner.TokenString(p.tok), lit)85 }86 p.next()87 return lit88}89func (p *gc_parser) expect_keyword(keyword string) {90 lit := p.expect(scanner.Ident)91 if lit != keyword {92 p.errorf("expected keyword: %s, got: %q", keyword, lit)93 }94}95func (p *gc_parser) expect_special(what string) {96 i := 097 for i < len(what) {98 if p.tok != rune(what[i]) {99 break100 }101 nc := p.scanner.Peek()102 if i != len(what)-1 && nc <= ' ' {103 break104 }105 p.next()106 i++107 }108 if i < len(what) {109 p.errorf("expected: %q, got: %q", what, what[0:i])110 }111}112// dotIdentifier = "?" | ( ident | '·' ) { ident | int | '·' } .113// we're doing lexer job here, kind of114func (p *gc_parser) parse_dot_ident() string {115 if p.tok == '?' {116 p.next()117 return "?"118 }119 ident := ""120 sep := 'x'121 i, j := 0, -1122 for (p.tok == scanner.Ident || p.tok == scanner.Int || p.tok == '·') && sep > ' ' {123 ident += p.lit124 if p.tok == '·' {125 ident += "·"126 j = i127 i++128 }129 i += len(p.lit)130 sep = p.scanner.Peek()131 p.next()132 }133 // middot = \xc2\xb7134 if j != -1 && i > j+1 {135 c := ident[j+2]136 if c >= '0' && c <= '9' {137 ident = ident[0:j]138 }139 }140 return ident141}142// ImportPath = string_lit .143// quoted name of the path, but we return it as an identifier, taking an alias144// from 'pathToAlias' map, it is filled by import statements145func (p *gc_parser) parse_package() *ast.Ident {146 path, err := strconv.Unquote(p.expect(scanner.String))147 if err != nil {148 panic(err)149 }150 return ast.NewIdent(path)151}152// ExportedName = "@" ImportPath "." dotIdentifier .153func (p *gc_parser) parse_exported_name() *ast.SelectorExpr {154 p.expect('@')155 pkg := p.parse_package()156 if pkg.Name == "" {157 pkg.Name = "!" + p.pfc.name + "!" + p.pfc.defalias158 } else {159 pkg.Name = p.path_to_name[pkg.Name]160 }161 p.expect('.')162 name := ast.NewIdent(p.parse_dot_ident())163 return &ast.SelectorExpr{X: pkg, Sel: name}164}165// Name = identifier | "?" | ExportedName .166func (p *gc_parser) parse_name() (string, ast.Expr) {167 switch p.tok {168 case scanner.Ident:169 name := p.lit170 p.next()171 return name, ast.NewIdent(name)172 case '?':173 p.next()174 return "?", ast.NewIdent("?")175 case '@':176 en := p.parse_exported_name()177 return en.Sel.Name, en178 }179 p.error("name expected")180 return "", nil181}182// Field = Name Type [ string_lit ] .183func (p *gc_parser) parse_field() *ast.Field {184 var tag string185 name, _ := p.parse_name()186 typ := p.parse_type()187 if p.tok == scanner.String {188 tag = p.expect(scanner.String)189 }190 var names []*ast.Ident191 if name != "?" {192 names = []*ast.Ident{ast.NewIdent(name)}193 }194 return &ast.Field{195 Names: names,196 Type: typ,197 Tag: &ast.BasicLit{Kind: token.STRING, Value: tag},198 }199}200// Parameter = ( identifier | "?" ) [ "..." ] Type [ string_lit ] .201func (p *gc_parser) parse_parameter() *ast.Field {202 // name203 name, _ := p.parse_name()204 // type205 var typ ast.Expr206 if p.tok == '.' {207 p.expect_special("...")208 typ = &ast.Ellipsis{Elt: p.parse_type()}209 } else {210 typ = p.parse_type()211 }212 var tag string213 if p.tok == scanner.String {214 tag = p.expect(scanner.String)215 }216 return &ast.Field{217 Names: []*ast.Ident{ast.NewIdent(name)},218 Type: typ,219 Tag: &ast.BasicLit{Kind: token.STRING, Value: tag},220 }221}222// Parameters = "(" [ ParameterList ] ")" .223// ParameterList = { Parameter "," } Parameter .224func (p *gc_parser) parse_parameters() *ast.FieldList {225 flds := []*ast.Field{}226 parse_parameter := func() {227 par := p.parse_parameter()228 flds = append(flds, par)229 }230 p.expect('(')231 if p.tok != ')' {232 parse_parameter()233 for p.tok == ',' {234 p.next()235 parse_parameter()236 }237 }238 p.expect(')')239 return &ast.FieldList{List: flds}240}241// Signature = Parameters [ Result ] .242// Result = Type | Parameters .243func (p *gc_parser) parse_signature() *ast.FuncType {244 var params *ast.FieldList245 var results *ast.FieldList246 params = p.parse_parameters()247 switch p.tok {248 case scanner.Ident, '[', '*', '<', '@':249 fld := &ast.Field{Type: p.parse_type()}250 results = &ast.FieldList{List: []*ast.Field{fld}}251 case '(':252 results = p.parse_parameters()253 }254 return &ast.FuncType{Params: params, Results: results}255}256// MethodOrEmbedSpec = Name [ Signature ] .257func (p *gc_parser) parse_method_or_embed_spec() *ast.Field {258 name, nameexpr := p.parse_name()259 if p.tok == '(' {260 typ := p.parse_signature()261 return &ast.Field{262 Names: []*ast.Ident{ast.NewIdent(name)},263 Type: typ,264 }265 }266 return &ast.Field{267 Type: nameexpr,268 }269}270// int_lit = [ "-" | "+" ] { "0" ... "9" } .271func (p *gc_parser) parse_int() {272 switch p.tok {273 case '-', '+':274 p.next()275 }276 p.expect(scanner.Int)277}278// number = int_lit [ "p" int_lit ] .279func (p *gc_parser) parse_number() {280 p.parse_int()281 if p.lit == "p" {282 p.next()283 p.parse_int()284 }285}286//-------------------------------------------------------------------------------287// gc_parser.types288//-------------------------------------------------------------------------------289// InterfaceType = "interface" "{" [ MethodOrEmbedList ] "}" .290// MethodOrEmbedList = MethodOrEmbedSpec { ";" MethodOrEmbedSpec } .291func (p *gc_parser) parse_interface_type() ast.Expr {292 var methods []*ast.Field293 parse_method := func() {294 meth := p.parse_method_or_embed_spec()295 methods = append(methods, meth)296 }297 p.expect_keyword("interface")298 p.expect('{')299 if p.tok != '}' {300 parse_method()301 for p.tok == ';' {302 p.next()303 parse_method()304 }305 }306 p.expect('}')307 return &ast.InterfaceType{Methods: &ast.FieldList{List: methods}}308}309// StructType = "struct" "{" [ FieldList ] "}" .310// FieldList = Field { ";" Field } .311func (p *gc_parser) parse_struct_type() ast.Expr {312 var fields []*ast.Field313 parse_field := func() {314 fld := p.parse_field()315 fields = append(fields, fld)316 }317 p.expect_keyword("struct")318 p.expect('{')319 if p.tok != '}' {320 parse_field()321 for p.tok == ';' {322 p.next()323 parse_field()324 }325 }326 p.expect('}')327 return &ast.StructType{Fields: &ast.FieldList{List: fields}}328}329// MapType = "map" "[" Type "]" Type .330func (p *gc_parser) parse_map_type() ast.Expr {331 p.expect_keyword("map")332 p.expect('[')333 key := p.parse_type()334 p.expect(']')335 elt := p.parse_type()336 return &ast.MapType{Key: key, Value: elt}337}338// ChanType = ( "chan" [ "<-" ] | "<-" "chan" ) Type .339func (p *gc_parser) parse_chan_type() ast.Expr {340 dir := ast.SEND | ast.RECV341 if p.tok == scanner.Ident {342 p.expect_keyword("chan")343 if p.tok == '<' {344 p.expect_special("<-")345 dir = ast.SEND346 }347 } else {348 p.expect_special("<-")349 p.expect_keyword("chan")350 dir = ast.RECV351 }352 elt := p.parse_type()353 return &ast.ChanType{Dir: dir, Value: elt}354}355// ArrayOrSliceType = ArrayType | SliceType .356// ArrayType = "[" int_lit "]" Type .357// SliceType = "[" "]" Type .358func (p *gc_parser) parse_array_or_slice_type() ast.Expr {359 p.expect('[')360 if p.tok == ']' {361 // SliceType362 p.next() // skip ']'363 return &ast.ArrayType{Len: nil, Elt: p.parse_type()}364 }365 // ArrayType366 lit := p.expect(scanner.Int)367 p.expect(']')368 return &ast.ArrayType{369 Len: &ast.BasicLit{Kind: token.INT, Value: lit},370 Elt: p.parse_type(),371 }372}373// Type =374// BasicType | TypeName | ArrayType | SliceType | StructType |375// PointerType | FuncType | InterfaceType | MapType | ChanType |376// "(" Type ")" .377// BasicType = ident .378// TypeName = ExportedName .379// SliceType = "[" "]" Type .380// PointerType = "*" Type .381// FuncType = "func" Signature .382func (p *gc_parser) parse_type() ast.Expr {383 switch p.tok {384 case scanner.Ident:385 switch p.lit {386 case "struct":387 return p.parse_struct_type()388 case "func":389 p.next()390 return p.parse_signature()391 case "interface":392 return p.parse_interface_type()393 case "map":394 return p.parse_map_type()395 case "chan":396 return p.parse_chan_type()397 default:398 lit := p.lit399 p.next()400 return ast.NewIdent(lit)401 }402 case '@':403 return p.parse_exported_name()404 case '[':405 return p.parse_array_or_slice_type()406 case '*':407 p.next()408 return &ast.StarExpr{X: p.parse_type()}409 case '<':410 return p.parse_chan_type()411 case '(':412 p.next()413 typ := p.parse_type()414 p.expect(')')415 return typ416 }417 p.errorf("unexpected token: %s", scanner.TokenString(p.tok))418 return nil419}420//-------------------------------------------------------------------------------421// gc_parser.declarations422//-------------------------------------------------------------------------------423// ImportDecl = "import" identifier string_lit .424func (p *gc_parser) parse_import_decl() {425 p.expect_keyword("import")426 alias := p.expect(scanner.Ident)427 path := p.parse_package()428 fullName := "!" + path.Name + "!" + alias429 p.path_to_name[path.Name] = fullName430 p.pfc.add_package_to_scope(fullName, path.Name)431}432// ConstDecl = "const" ExportedName [ Type ] "=" Literal .433// Literal = bool_lit | int_lit | float_lit | complex_lit | string_lit .434// bool_lit = "true" | "false" .435// complex_lit = "(" float_lit "+" float_lit ")" .436// rune_lit = "(" int_lit "+" int_lit ")" .437// string_lit = `"` { unicode_char } `"` .438func (p *gc_parser) parse_const_decl() (string, *ast.GenDecl) {439 // TODO: do we really need actual const value? gocode doesn't use this440 p.expect_keyword("const")441 name := p.parse_exported_name()442 var typ ast.Expr443 if p.tok != '=' {444 typ = p.parse_type()445 }446 p.expect('=')447 // skip the value448 switch p.tok {449 case scanner.Ident:450 // must be bool, true or false451 p.next()452 case '-', '+', scanner.Int:453 // number454 p.parse_number()455 case '(':456 // complex_lit or rune_lit457 p.next() // skip '('458 if p.tok == scanner.Char {459 p.next()460 } else {461 p.parse_number()462 }463 p.expect('+')464 p.parse_number()465 p.expect(')')466 case scanner.Char:467 p.next()468 case scanner.String:469 p.next()470 default:471 p.error("expected literal")472 }473 return name.X.(*ast.Ident).Name, &ast.GenDecl{474 Tok: token.CONST,475 Specs: []ast.Spec{476 &ast.ValueSpec{477 Names: []*ast.Ident{name.Sel},478 Type: typ,479 Values: []ast.Expr{&ast.BasicLit{Kind: token.INT, Value: "0"}},480 },481 },482 }483}484// TypeDecl = "type" ExportedName Type .485func (p *gc_parser) parse_type_decl() (string, *ast.GenDecl) {486 p.expect_keyword("type")487 name := p.parse_exported_name()488 typ := p.parse_type()489 return name.X.(*ast.Ident).Name, &ast.GenDecl{490 Tok: token.TYPE,491 Specs: []ast.Spec{492 &ast.TypeSpec{493 Name: name.Sel,494 Type: typ,495 },496 },497 }498}499// VarDecl = "var" ExportedName Type .500func (p *gc_parser) parse_var_decl() (string, *ast.GenDecl) {501 p.expect_keyword("var")502 name := p.parse_exported_name()503 typ := p.parse_type()504 return name.X.(*ast.Ident).Name, &ast.GenDecl{505 Tok: token.VAR,506 Specs: []ast.Spec{507 &ast.ValueSpec{508 Names: []*ast.Ident{name.Sel},509 Type: typ,510 },511 },512 }513}514// FuncBody = "{" ... "}" .515func (p *gc_parser) parse_func_body() {516 p.expect('{')517 for i := 1; i > 0; p.next() {518 switch p.tok {519 case '{':520 i++521 case '}':522 i--523 }524 }525}526// FuncDecl = "func" ExportedName Signature [ FuncBody ] .527func (p *gc_parser) parse_func_decl() (string, *ast.FuncDecl) {528 // "func" was already consumed by lookahead529 name := p.parse_exported_name()530 typ := p.parse_signature()531 if p.tok == '{' {532 p.parse_func_body()533 }534 return name.X.(*ast.Ident).Name, &ast.FuncDecl{535 Name: name.Sel,536 Type: typ,537 }538}539func strip_method_receiver(recv *ast.FieldList) string {540 var sel *ast.SelectorExpr541 // find selector expression542 typ := recv.List[0].Type543 switch t := typ.(type) {544 case *ast.StarExpr:545 sel = t.X.(*ast.SelectorExpr)546 case *ast.SelectorExpr:547 sel = t548 }549 // extract package path550 pkg := sel.X.(*ast.Ident).Name551 // write back stripped type552 switch t := typ.(type) {553 case *ast.StarExpr:554 t.X = sel.Sel555 case *ast.SelectorExpr:556 recv.List[0].Type = sel.Sel557 }558 return pkg559}560// MethodDecl = "func" Receiver Name Signature .561// Receiver = "(" ( identifier | "?" ) [ "*" ] ExportedName ")" [ FuncBody ] .562func (p *gc_parser) parse_method_decl() (string, *ast.FuncDecl) {563 recv := p.parse_parameters()564 pkg := strip_method_receiver(recv)565 name, _ := p.parse_name()566 typ := p.parse_signature()567 if p.tok == '{' {568 p.parse_func_body()569 }570 return pkg, &ast.FuncDecl{571 Recv: recv,572 Name: ast.NewIdent(name),573 Type: typ,574 }575}576// Decl = [ ImportDecl | ConstDecl | TypeDecl | VarDecl | FuncDecl | MethodDecl ] "\n" .577func (p *gc_parser) parse_decl() (pkg string, decl ast.Decl) {578 switch p.lit {579 case "import":580 p.parse_import_decl()581 case "const":582 pkg, decl = p.parse_const_decl()583 case "type":584 pkg, decl = p.parse_type_decl()585 case "var":586 pkg, decl = p.parse_var_decl()587 case "func":588 p.next()589 if p.tok == '(' {590 pkg, decl = p.parse_method_decl()591 } else {592 pkg, decl = p.parse_func_decl()593 }594 }595 p.expect('\n')596 return597}598// Export = PackageClause { Decl } "$$" .599// PackageClause = "package" identifier [ "safe" ] "\n" .600func (p *gc_parser) parse_export(callback func(string, ast.Decl)) {601 p.expect_keyword("package")602 p.pfc.defalias = p.expect(scanner.Ident)603 if p.tok != '\n' {604 p.expect_keyword("safe")605 }606 p.expect('\n')607 for p.tok != '$' && p.tok != scanner.EOF {608 pkg, decl := p.parse_decl()609 if decl != nil {610 callback(pkg, decl)611 }612 }613}...

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Parse

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1import (2func main() {3 src := []byte(`package main4import "fmt"5func main() {6 fmt.Println("Hello, 世界")7}`)8 f, err := parser.ParseFile(fset, "hello.go", src, 0)9 if err != nil {10 fmt.Println(err)11 }12 ast.Print(fset, f)13}14import (15func main() {16 f, err := parser.ParseFile(fset, "hello.go", nil, parser.ParseComments)17 if err != nil {18 fmt.Println(err)19 }20 ast.Print(fset, f)21}22import (23func main() {24 pkgs, err := parser.ParseDir(fset, ".", nil, 0)25 if err != nil {26 fmt.Println(err)27 }28 for _, pkg := range pkgs {29 for _, f := range pkg.Files {30 ast.Print(fset, f)31 }32 }33}34import (35func main() {36 f, err := parser.ParseFile(fset, "hello.go", nil, parser.ParseComments)37 if err != nil {38 fmt.Println(err)39 }40 ast.Print(fset, f)41}42import (

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Parse

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1import (2func main() {3 f, err := parser.ParseFile(fset, "1.go", nil, parser.ParseComments)4 if err != nil {5 fmt.Println(err)6 }7 fmt.Println("Imports:")8 for _, s := range f.Imports {9 fmt.Println(s.Path.Value)10 }11}12import (13func main() {14 fmt.Println("Hello World")15}

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Parse

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1import (2func main() {3 f, err := parser.ParseFile(fset, "1.go", nil, parser.ParseComments)4 if err != nil {5 fmt.Println(err)6 }7 fmt.Println(f)8}9&{1.go [0xc0000a00e0 0xc0000a0100 0xc0000a0120 0xc0000a0140 0xc0000a0160 0xc0000a0180 0xc0000a01a0 0xc0000a01c0 0xc0000a01e0 0xc0000a0200 0xc0000a0220 0xc0000a0240 0xc0000a0260 0xc0000a0280 0xc0000a02a0 0xc0000a02c0 0xc0000a02e0 0xc0000a0300 0xc0000a0320 0xc0000a0340 0xc0000a0360 0xc0000a0380 0xc0000a03a0 0xc0000a03c0 0xc0000a03e0 0xc0000a0400 0xc0000a0420 0xc0000a0440 0xc0000a0460 0xc0000a0480 0xc0000a04a0 0xc0000a04c0 0xc0000a04e0 0xc0000a0500 0xc0000a0520 0xc0000a0540 0xc0000a0560 0xc0000a0580 0xc0000a05a0 0xc0000a05c0 0xc0000a05e0 0xc0000a0600 0xc0000a0620 0xc0000a0640 0

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1import (2func main() {3 src := []byte(`4import "fmt"5func main() {6 fmt.Println("Hello, world.")7}8 f, err := parser.ParseFile(fset, "hello.go", src, 0)9 if err != nil {10 fmt.Println(err)11 }12 ast.Print(fset, f)13}

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