How to use Ident method of kconfig Package

Best Syzkaller code snippet using kconfig.Ident

kconfig.go

Source:kconfig.go Github

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...100 includes []*parser101 stack []*Menu102 cur *Menu103 baseDir string104 helpIdent int105}106func Parse(target *targets.Target, file string) (*KConfig, error) {107 data, err := ioutil.ReadFile(file)108 if err != nil {109 return nil, fmt.Errorf("failed to open Kconfig file %v: %v", file, err)110 }111 return ParseData(target, data, file)112}113func ParseData(target *targets.Target, data []byte, file string) (*KConfig, error) {114 kp := &kconfigParser{115 parser: newParser(data, file),116 target: target,117 baseDir: filepath.Dir(file),118 }119 kp.parseFile()120 if kp.err != nil {121 return nil, kp.err122 }123 if len(kp.stack) == 0 {124 return nil, fmt.Errorf("no mainmenu in config")125 }126 root := kp.stack[0]127 kconf := &KConfig{128 Root: root,129 Configs: make(map[string]*Menu),130 }131 kconf.walk(root, nil, nil)132 return kconf, nil133}134func (kconf *KConfig) walk(m *Menu, dependsOn, visibleIf expr) {135 m.kconf = kconf136 m.dependsOn = exprAnd(dependsOn, m.dependsOn)137 m.visibleIf = exprAnd(visibleIf, m.visibleIf)138 if m.Kind == MenuConfig {139 kconf.Configs[m.Name] = m140 }141 for _, elem := range m.Elems {142 kconf.walk(elem, m.dependsOn, m.visibleIf)143 }144}145func (kp *kconfigParser) parseFile() {146 for kp.nextLine() {147 kp.parseLine()148 if kp.TryConsume("#") {149 _ = kp.ConsumeLine()150 }151 }152 kp.endCurrent()153}154func (kp *kconfigParser) parseLine() {155 if kp.eol() {156 return157 }158 if kp.helpIdent != 0 {159 if kp.identLevel() >= kp.helpIdent {160 _ = kp.ConsumeLine()161 return162 }163 kp.helpIdent = 0164 }165 if kp.TryConsume("#") {166 _ = kp.ConsumeLine()167 return168 }169 if kp.TryConsume("$") {170 _ = kp.Shell()171 return172 }173 ident := kp.Ident()174 if kp.TryConsume("=") || kp.TryConsume(":=") {175 // Macro definition, see:176 // https://www.kernel.org/doc/html/latest/kbuild/kconfig-macro-language.html177 // We don't use this for anything now.178 kp.ConsumeLine()179 return180 }181 kp.parseMenu(ident)182}183func (kp *kconfigParser) parseMenu(cmd string) {184 switch cmd {185 case "source":186 file, ok := kp.TryQuotedString()187 if !ok {188 file = kp.ConsumeLine()189 }190 kp.includeSource(file)191 case "mainmenu":192 kp.pushCurrent(&Menu{193 Kind: MenuConfig,194 prompts: []prompt{{text: kp.QuotedString()}},195 })196 case "comment":197 kp.newCurrent(&Menu{198 Kind: MenuComment,199 prompts: []prompt{{text: kp.QuotedString()}},200 })201 case "menu":202 kp.pushCurrent(&Menu{203 Kind: MenuGroup,204 prompts: []prompt{{text: kp.QuotedString()}},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)...

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