How to use parseExpr method of kconfig Package

Best Syzkaller code snippet using kconfig.parseExpr

kconfig.go

Source:kconfig.go

...205		})206	case "if":207		kp.pushCurrent(&Menu{208			Kind:      MenuGroup,209			visibleIf: kp.parseExpr(),210		})211	case "choice":212		kp.pushCurrent(&Menu{213			Kind: MenuChoice,214		})215	case "endmenu", "endif", "endchoice":216		kp.popCurrent()217	case "config", "menuconfig":218		kp.newCurrent(&Menu{219			Kind: MenuConfig,220			Name: kp.Ident(),221		})222	default:223		kp.parseConfigType(cmd)224	}225}226func (kp *kconfigParser) parseConfigType(typ string) {227	cur := kp.current()228	switch typ {229	case "tristate":230		cur.Type = TypeTristate231		kp.tryParsePrompt()232	case "def_tristate":233		cur.Type = TypeTristate234		kp.parseDefaultValue()235	case "bool":236		cur.Type = TypeBool237		kp.tryParsePrompt()238	case "def_bool":239		cur.Type = TypeBool240		kp.parseDefaultValue()241	case "int":242		cur.Type = TypeInt243		kp.tryParsePrompt()244	case "def_int":245		cur.Type = TypeInt246		kp.parseDefaultValue()247	case "hex":248		cur.Type = TypeHex249		kp.tryParsePrompt()250	case "def_hex":251		cur.Type = TypeHex252		kp.parseDefaultValue()253	case "string":254		cur.Type = TypeString255		kp.tryParsePrompt()256	case "def_string":257		cur.Type = TypeString258		kp.parseDefaultValue()259	default:260		kp.parseProperty(typ)261	}262}263func (kp *kconfigParser) parseProperty(prop string) {264	cur := kp.current()265	switch prop {266	case "prompt":267		kp.tryParsePrompt()268	case "depends":269		kp.MustConsume("on")270		cur.dependsOn = exprAnd(cur.dependsOn, kp.parseExpr())271	case "visible":272		kp.MustConsume("if")273		cur.visibleIf = exprAnd(cur.visibleIf, kp.parseExpr())274	case "select", "imply":275		_ = kp.Ident()276		if kp.TryConsume("if") {277			_ = kp.parseExpr()278		}279	case "option":280		// It can be 'option foo', or 'option bar="BAZ"'.281		kp.ConsumeLine()282	case "modules":283	case "optional":284	case "default":285		kp.parseDefaultValue()286	case "range":287		_, _ = kp.parseExpr(), kp.parseExpr() // from, to288		if kp.TryConsume("if") {289			_ = kp.parseExpr()290		}291	case "help", "---help---":292		// Help rules are tricky: end of help is identified by smaller indentation level293		// as would be rendered on a terminal with 8-column tabs setup, minus empty lines.294		for kp.nextLine() {295			if kp.eol() {296				continue297			}298			kp.helpIdent = kp.identLevel()299			kp.ConsumeLine()300			break301		}302	default:303		kp.failf("unknown line")304	}305}306func (kp *kconfigParser) includeSource(file string) {307	kp.newCurrent(nil)308	file = kp.expandString(file)309	file = filepath.Join(kp.baseDir, file)310	data, err := ioutil.ReadFile(file)311	if err != nil {312		kp.failf("%v", err)313		return314	}315	kp.includes = append(kp.includes, kp.parser)316	kp.parser = newParser(data, file)317	kp.parseFile()318	err = kp.err319	kp.parser = kp.includes[len(kp.includes)-1]320	kp.includes = kp.includes[:len(kp.includes)-1]321	if kp.err == nil {322		kp.err = err323	}324}325func (kp *kconfigParser) pushCurrent(m *Menu) {326	kp.endCurrent()327	kp.cur = m328	kp.stack = append(kp.stack, m)329}330func (kp *kconfigParser) popCurrent() {331	kp.endCurrent()332	if len(kp.stack) < 2 {333		kp.failf("unbalanced endmenu")334		return335	}336	last := kp.stack[len(kp.stack)-1]337	kp.stack = kp.stack[:len(kp.stack)-1]338	top := kp.stack[len(kp.stack)-1]339	last.Parent = top340	top.Elems = append(top.Elems, last)341}342func (kp *kconfigParser) newCurrent(m *Menu) {343	kp.endCurrent()344	kp.cur = m345}346func (kp *kconfigParser) current() *Menu {347	if kp.cur == nil {348		kp.failf("config property outside of config")349		return &Menu{}350	}351	return kp.cur352}353func (kp *kconfigParser) endCurrent() {354	if kp.cur == nil {355		return356	}357	if len(kp.stack) == 0 {358		kp.failf("unbalanced endmenu")359		return360	}361	top := kp.stack[len(kp.stack)-1]362	if top != kp.cur {363		kp.cur.Parent = top364		top.Elems = append(top.Elems, kp.cur)365	}366	kp.cur = nil367}368func (kp *kconfigParser) tryParsePrompt() {369	if str, ok := kp.TryQuotedString(); ok {370		prompt := prompt{371			text: str,372		}373		if kp.TryConsume("if") {374			prompt.cond = kp.parseExpr()375		}376		kp.current().prompts = append(kp.current().prompts, prompt)377	}378}379func (kp *kconfigParser) parseDefaultValue() {380	def := defaultVal{val: kp.parseExpr()}381	if kp.TryConsume("if") {382		def.cond = kp.parseExpr()383	}384	kp.current().defaults = append(kp.current().defaults, def)385}386func (kp *kconfigParser) expandString(str string) string {387	str = strings.Replace(str, "$(SRCARCH)", kp.target.KernelHeaderArch, -1)388	str = strings.Replace(str, "$SRCARCH", kp.target.KernelHeaderArch, -1)389	return str390}...

parseExpr

Using AI Code Generation

1import (2func main() {3	reader := bufio.NewReader(os.Stdin)4	fmt.Println("Enter kconfig file name: ")5	text, _ := reader.ReadString('6	text = strings.TrimSuffix(text, "7	fmt.Println("Enter the expression to search: ")8	text1, _ := reader.ReadString('9	text1 = strings.TrimSuffix(text1, "10	f, err := os.Open(text)11	if err != nil {12		fmt.Println("Error in opening the file")13	}14	defer f.Close()15	scanner := bufio.NewScanner(f)16	scanner.Split(bufio.ScanLines)17	for scanner.Scan() {18		txtlines = append(txtlines, scanner.Text())19	}

parseExpr

Using AI Code Generation

1import (2func main() {3	var (4	file, err := os.Open("config")5	if err != nil {6		fmt.Println("Error while opening file")7	}8	defer file.Close()9	scanner := bufio.NewScanner(file)10	for scanner.Scan() {11		line = scanner.Text()12		words = strings.Fields(line)13		if len(words) == 0 {14			fmt.Println("Empty line")15		} else {16			for _, word := range words {17				if strings.HasPrefix(word, "#") {18					fmt.Println("Comment")19				} else if strings.HasPrefix(word, "if") {20					fmt.Println("if statement")21				} else if strings.HasPrefix(word, "endif") {22					fmt.Println("endif statement")23				} else if strings.HasPrefix(word, "config") {24					fmt.Println("config statement")25				} else if strings.HasPrefix(word, "menuconfig") {26					fmt.Println("menuconfig statement")27				} else if strings.HasPrefix(word, "source") {28					fmt.Println("source statement")29				} else if strings.HasPrefix(word, "menu") {30					fmt.Println("menu statement")31				} else if strings.HasPrefix(word, "endmenu") {32					fmt.Println("endmenu statement")33				} else if strings.HasPrefix(word, "choice") {34					fmt.Println("choice statement")35				} else if strings.HasPrefix(word, "endchoice") {36					fmt.Println("endchoice statement")37				} else if strings.HasPrefix(word, "help") {38					fmt.Println("help statement")39				} else if strings.HasPrefix(word, "depends") {40					fmt.Println("depends statement")41				} else if strings.HasPrefix(word, "default") {42					fmt.Println("default statement")43				} else if strings.HasPrefix(word, "prompt") {44					fmt.Println("prompt statement")45				} else if strings.HasPrefix(word, "select") {46					fmt.Println("select statement")47				} else if strings.HasPrefix(word, "range")

parseExpr

Using AI Code Generation

1import (2func main() {3 k := kconfig.NewKConfig()4 k.ParseExpr("a || b && c || d")5 fmt.Println(k.Expression)6}

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