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How to use parseCExpr method of ast Package

Best Syzkaller code snippet using ast.parseCExpr

parser.go

Source:parser.go

...178	name := p.parseIdent()179	p.expect(tokInt, tokIdent, tokCExpr)180	var val *Int181	if p.tok == tokCExpr {182		val = p.parseCExpr()183	} else {184		val = p.parseInt()185	}186	return &Define{187		Pos:   pos0,188		Name:  name,189		Value: val,190	}191}192func (p *parser) parseInclude() *Include {193	pos0 := p.pos194	p.consume(tokInclude)195	return &Include{196		Pos:  pos0,197		File: p.parseString(),198	}199}200func (p *parser) parseIncdir() *Incdir {201	pos0 := p.pos202	p.consume(tokIncdir)203	return &Incdir{204		Pos: pos0,205		Dir: p.parseString(),206	}207}208func (p *parser) parseResource() *Resource {209	pos0 := p.pos210	p.consume(tokResource)211	name := p.parseIdent()212	p.consume(tokLBrack)213	base := p.parseType()214	p.consume(tokRBrack)215	var values []*Int216	if p.tryConsume(tokColon) {217		values = append(values, p.parseInt())218		for p.tryConsume(tokComma) {219			values = append(values, p.parseInt())220		}221	}222	return &Resource{223		Pos:    pos0,224		Name:   name,225		Base:   base,226		Values: values,227	}228}229func (p *parser) parseCall(name *Ident) *Call {230	c := &Call{231		Pos:      name.Pos,232		Name:     name,233		CallName: callName(name.Name),234	}235	p.consume(tokLParen)236	for p.tok != tokRParen {237		c.Args = append(c.Args, p.parseField())238		p.expect(tokComma, tokRParen)239		p.tryConsume(tokComma)240	}241	p.consume(tokRParen)242	if p.tok != tokNewLine {243		c.Ret = p.parseType()244	}245	return c246}247func callName(s string) string {248	pos := strings.IndexByte(s, '$')249	if pos == -1 {250		return s251	}252	return s[:pos]253}254func (p *parser) parseFlags(name *Ident) Node {255	p.consume(tokEq)256	switch p.tok {257	case tokInt, tokIdent:258		return p.parseIntFlags(name)259	case tokString:260		return p.parseStrFlags(name)261	default:262		p.expect(tokInt, tokIdent, tokString)263		return nil264	}265}266func (p *parser) parseIntFlags(name *Ident) *IntFlags {267	values := []*Int{p.parseInt()}268	for p.tryConsume(tokComma) {269		values = append(values, p.parseInt())270	}271	return &IntFlags{272		Pos:    name.Pos,273		Name:   name,274		Values: values,275	}276}277func (p *parser) parseStrFlags(name *Ident) *StrFlags {278	values := []*String{p.parseString()}279	for p.tryConsume(tokComma) {280		values = append(values, p.parseString())281	}282	return &StrFlags{283		Pos:    name.Pos,284		Name:   name,285		Values: values,286	}287}288func (p *parser) parseStruct(name *Ident) *Struct {289	str := &Struct{290		Pos:  name.Pos,291		Name: name,292	}293	closing := tokRBrace294	if p.tok == tokLBrack {295		str.IsUnion = true296		closing = tokRBrack297	}298	p.next()299	p.consume(tokNewLine)300	for {301		newBlock := false302		for p.tok == tokNewLine {303			newBlock = true304			p.next()305		}306		comments := p.parseCommentBlock()307		if p.tryConsume(closing) {308			str.Comments = comments309			break310		}311		fld := p.parseField()312		fld.NewBlock = newBlock313		fld.Comments = comments314		str.Fields = append(str.Fields, fld)315		p.consume(tokNewLine)316	}317	if p.tryConsume(tokLBrack) {318		str.Attrs = append(str.Attrs, p.parseIdent())319		for p.tryConsume(tokComma) {320			str.Attrs = append(str.Attrs, p.parseIdent())321		}322		p.consume(tokRBrack)323	}324	return str325}326func (p *parser) parseCommentBlock() []*Comment {327	var comments []*Comment328	for p.tok == tokComment {329		comments = append(comments, p.parseComment())330		p.consume(tokNewLine)331		for p.tryConsume(tokNewLine) {332		}333	}334	return comments335}336func (p *parser) parseField() *Field {337	name := p.parseIdent()338	return &Field{339		Pos:  name.Pos,340		Name: name,341		Type: p.parseType(),342	}343}344func (p *parser) parseType() *Type {345	arg := &Type{346		Pos: p.pos,347	}348	allowColon := false349	switch p.tok {350	case tokInt:351		allowColon = true352		arg.Value, arg.ValueHex = p.parseIntValue()353	case tokIdent:354		allowColon = true355		arg.Ident = p.lit356	case tokString:357		arg.String = p.lit358	default:359		p.expect(tokInt, tokIdent, tokString)360	}361	p.next()362	if allowColon && p.tryConsume(tokColon) {363		arg.HasColon = true364		arg.Pos2 = p.pos365		switch p.tok {366		case tokInt:367			arg.Value2, arg.Value2Hex = p.parseIntValue()368		case tokIdent:369			arg.Ident2 = p.lit370		default:371			p.expect(tokInt, tokIdent)372		}373		p.next()374	}375	arg.Args = p.parseTypeList()376	return arg377}378func (p *parser) parseTypeList() []*Type {379	var args []*Type380	if p.tryConsume(tokLBrack) {381		args = append(args, p.parseType())382		for p.tryConsume(tokComma) {383			args = append(args, p.parseType())384		}385		p.consume(tokRBrack)386	}387	return args388}389func (p *parser) parseIdent() *Ident {390	p.expect(tokIdent)391	ident := &Ident{392		Pos:  p.pos,393		Name: p.lit,394	}395	p.next()396	return ident397}398func (p *parser) parseString() *String {399	p.expect(tokString)400	str := &String{401		Pos:   p.pos,402		Value: p.lit,403	}404	p.next()405	return str406}407func (p *parser) parseInt() *Int {408	i := &Int{409		Pos: p.pos,410	}411	switch p.tok {412	case tokInt:413		i.Value, i.ValueHex = p.parseIntValue()414	case tokIdent:415		i.Ident = p.lit416	default:417		p.expect(tokInt, tokIdent)418	}419	p.next()420	return i421}422func (p *parser) parseIntValue() (uint64, bool) {423	if v, err := strconv.ParseUint(p.lit, 10, 64); err == nil {424		return v, false425	}426	if len(p.lit) > 2 && p.lit[0] == '0' && p.lit[1] == 'x' {427		if v, err := strconv.ParseUint(p.lit[2:], 16, 64); err == nil {428			return v, true429		}430	}431	panic(fmt.Sprintf("scanner returned bad integer %q", p.lit))432}433func (p *parser) parseCExpr() *Int {434	i := &Int{435		Pos:   p.pos,436		CExpr: p.lit,437	}438	p.consume(tokCExpr)439	return i440}...

parseCExpr

Using AI Code Generation

1import (2func main() {3	src := []byte(`package main4	import "fmt"5	func main() {6		fmt.Println("Hello, playground")7	}`)8	f, err := parser.ParseFile(fset, "hello.go", src, parser.ImportsOnly)9	if err != nil {10		fmt.Println(err)11	}12	for _, s := range f.Imports {13		fmt.Println(s.Path.Value)14	}15}16import (17func main() {18	src := []byte(`package main19	import "fmt"20	func main() {21		fmt.Println("Hello, playground")22	}`)23	f, err := parser.ParseFile(fset, "hello.go", src, parser.ImportsOnly)24	if err != nil {25		fmt.Println(err)26	}27	for _, s := range f.Imports {28		fmt.Println(s.Path.Value)29	}30}31import (32func main() {33	src := []byte(`package main34	import "fmt"35	func main() {36		fmt.Println("Hello, playground")37	}`)38	f, err := parser.ParseFile(fset, "hello.go", src, parser.ImportsOnly)39	if err != nil {40		fmt.Println(err)41	}42	for _, s := range f.Imports {43		fmt.Println(s.Path.Value)44	}45}

parseCExpr

Using AI Code Generation

1import (2func main() {3    func main() {4    }`5    f, err := parser.ParseFile(fset, "", src, 0)6    if err != nil {7        panic(err)8    }9    ast.Print(fset, f)10    expr := f.Decls[0].(*ast.FuncDecl).Body.List[2].(*ast.AssignStmt).Rhs[0]11    fmt.Println(ast.Print(fset, expr))12}13func main() {14}15import (16func main() {17    func main() {18    }`19    f, err := parser.ParseFile(fset, "", src, 0)20    if err != nil {21        panic(err)22    }23    ast.Print(fset, f)24    expr := f.Decls[0].(*ast.FuncDecl).Body.List[2].(*ast.AssignStmt).Rhs[0]25    fmt.Println(ast.Print(fset, expr))26}27func main() {28}

parseCExpr

Using AI Code Generation

1import (2func main() {3	expr := "a+b*(c+d)"4	a := ast.New()5	p := parser.New(expr, 0)6	p.ParseCExpr(a)7	fmt.Println(a)8}9&{0xc0000a4000 0xc0000a4020 0xc0000a4040 0xc0000a4060 0xc0000a4080 0xc0000a40a0 0xc0000a40c0 0xc0000a40e0 0xc0000a4100 0xc0000a4120 0xc0000a4140 0xc0000a4160 0xc0000a4180 0xc0000a41a0 0xc0000a41c0 0xc0000a41e0 0xc0000a4200 0xc0000a4220 0xc0000a4240 0xc0000a4260 0xc0000a4280 0xc0000a42a0 0xc0000a42c0 0xc0000a42e0 0xc0000a4300 0xc0000a4320 0xc0000a4340 0xc0000a4360 0xc0000a4380 0xc0000a43a0 0xc0000a43c0 0xc0000a43e0 0xc0000a4400 0xc0000a4420 0xc0000a4440 0xc0000a4460 0xc0000a4480 0xc0000a44a0 0xc0000a44

parseCExpr

Using AI Code Generation

1import (2func main() {3 ast1 := ast.NewAst()4 result := ast1.ParseCExpr("2+3")5 fmt.Println(result)6}7{+ 2 3}

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