How to use parseDollarToken method of json Package

Best Go-testdeep code snippet using json.parseDollarToken

lex.go

Source:lex.go Github

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...193 }194 if dollarToken == "" {195 return '$'196 }197 token, value := j.parseDollarToken(dollarToken, j.pos, false)198 if token == OPERATOR {199 lval.string = value.(string)200 return OPERATOR201 }202 lval.value = value203 j.moveHoriz(1+len(dollarToken), 1+utf8.RuneCountInString(dollarToken))204 return token205 default:206 if r >= 'A' && r <= 'Z' {207 operator, ok := j.parseOperator()208 if !ok {209 return 0210 }211 j.pushPos(j.lastTokenPos)212 lval.string = operator213 return OPERATOR214 }215 }216 return int(r)217}218func hex(b []byte) (rune, bool) {219 var r rune220 for i := 0; i < 4; i++ {221 r <<= 4222 switch {223 case b[i] >= '0' && b[i] <= '9':224 r += rune(b[i]) - '0'225 case b[i] >= 'a' && b[i] <= 'f':226 r += rune(b[i]) - 'a' + 10227 case b[i] >= 'A' && b[i] <= 'F':228 r += rune(b[i]) - 'A' + 10229 default:230 return 0, false231 }232 }233 return r, true234}235func (j *json) parseString() (string, bool) {236 // j.buf[j.pos.bpos] == '"' → caller responsibility237 var b *strings.Builder238 from := j.pos.bpos + 1239 savePos := j.pos240 appendBuffer := func(r rune) {241 if b == nil {242 b = &strings.Builder{}243 b.Write(j.buf[from : j.pos.bpos-1])244 }245 b.WriteRune(r)246 }247str:248 for {249 r, ok := j.getRune()250 if !ok {251 break252 }253 switch r {254 case '"':255 if b == nil {256 return string(j.buf[from:j.pos.bpos]), true257 }258 return b.String(), true259 case '\\':260 r, ok := j.getRune()261 if !ok {262 break str263 }264 switch r {265 case '"', '\\', '/':266 appendBuffer(r)267 case 'b':268 appendBuffer('\b')269 case 'f':270 appendBuffer('\f')271 case 'n':272 appendBuffer('\n')273 case 'r':274 appendBuffer('\r')275 case 't':276 appendBuffer('\t')277 case 'u':278 if j.remain() >= 5 {279 r, ok = hex(j.buf[j.pos.bpos+1 : j.pos.bpos+5])280 if ok {281 appendBuffer(r)282 j.pos = j.pos.incHoriz(4)283 break284 }285 }286 fallthrough287 default:288 j.fatal("invalid escape sequence")289 return "", false290 }291 default: //nolint: gocritic292 if r < ' ' || r > utf8.MaxRune {293 j.fatal("invalid character in string")294 return "", false295 }296 fallthrough297 case '\n', '\r', '\t': // not normally accepted by JSON spec298 if b != nil {299 b.WriteRune(r)300 }301 }302 }303 j.fatal("unterminated string", savePos)304 return "", false305}306func (j *json) parseRawString() (string, bool) {307 // j.buf[j.pos.bpos] == first non-ws rune after 'r' → caller responsibility308 savePos := j.pos309 startDelim, _ := j.getRune() // cannot fail, caller called j.skipWs()310 var endDelim rune311 switch startDelim {312 case '(':313 endDelim = ')'314 case '{':315 endDelim = '}'316 case '[':317 endDelim = ']'318 case '<':319 endDelim = '>'320 default:321 if startDelim == '_' ||322 (!unicode.IsPunct(startDelim) && !unicode.IsSymbol(startDelim)) {323 j.fatal(fmt.Sprintf("invalid r delimiter %q, should be either a punctuation or a symbol rune, excluding '_'",324 startDelim))325 return "", false326 }327 endDelim = startDelim328 }329 from := j.pos.bpos + j.curSize330 for innerDelim := 0; ; {331 r, ok := j.getRune()332 if !ok {333 break334 }335 switch r {336 case startDelim:337 if startDelim == endDelim {338 return string(j.buf[from:j.pos.bpos]), true339 }340 innerDelim++341 case endDelim:342 if innerDelim == 0 {343 return string(j.buf[from:j.pos.bpos]), true344 }345 innerDelim--346 case '\n', '\r', '\t': // accept these raw bytes347 default:348 if r < ' ' || r > utf8.MaxRune {349 j.fatal("invalid character in raw string")350 return "", false351 }352 }353 }354 j.fatal("unterminated raw string", savePos)355 return "", false356}357// analyzeStringContent checks whether s contains $ prefix or not. If358// yes, it tries to parse it.359func (j *json) analyzeStringContent(s string, strPos Position, lval *yySymType) int {360 if len(s) <= 1 || !strings.HasPrefix(s, "$") {361 lval.string = s362 return STRING363 }364 // Double $$ at start of strings escape a $365 if strings.HasPrefix(s[1:], "$") {366 lval.string = s[1:]367 return STRING368 }369 // Check for placeholder ($1 or $name) or operator call as $^Empty370 // or $^Re(q<\d+>)371 token, value := j.parseDollarToken(s[1:], strPos, true)372 // in string, j.parseDollarToken can never return an OPERATOR373 // token. In case an operator is embedded in string, a SUB_PARSER is374 // returned instead.375 lval.value = value376 return token377}378const (379 numInt = 1 << iota380 numFloat381 numGoExt382)383var numBytes = [...]uint8{384 '+': numInt, '-': numInt,385 '0': numInt,386 '1': numInt,387 '2': numInt,388 '3': numInt,389 '4': numInt,390 '5': numInt,391 '6': numInt,392 '7': numInt,393 '8': numInt,394 '9': numInt,395 '_': numGoExt,396 // bases 2, 8, 16397 'b': numInt, 'B': numInt, 'o': numInt, 'O': numInt, 'x': numInt, 'X': numInt,398 'a': numInt, 'A': numInt,399 'c': numInt, 'C': numInt,400 'd': numInt, 'D': numInt,401 'e': numInt | numFloat, 'E': numInt | numFloat,402 'f': numInt, 'F': numInt,403 // floats404 '.': numFloat, 'p': numFloat, 'P': numFloat,405}406func (j *json) parseNumber() (float64, bool) {407 // j.buf[j.pos.bpos] == '[-+0-9.]' → caller responsibility408 numKind := numBytes[j.buf[j.pos.bpos]]409 i := j.pos.bpos + 1410 for l := len(j.buf); i < l; i++ {411 b := int(j.buf[i])412 if b >= len(numBytes) || numBytes[b] == 0 {413 break414 }415 numKind |= numBytes[b]416 }417 s := string(j.buf[j.pos.bpos:i])418 var (419 f float64420 err error421 )422 // Differentiate float/int parsing to accept old octal notation:423 // 0600 → 384 as int64, but 600 as float64424 if (numKind & numFloat) != 0 {425 // strconv.ParseFloat does not handle "_"426 var bf *big.Float427 bf, _, err = new(big.Float).Parse(s, 0)428 if err == nil {429 f, _ = bf.Float64()430 }431 } else { // numInt and/or numGoExt432 var int int64433 int, err = strconv.ParseInt(s, 0, 64)434 if err == nil {435 f = float64(int)436 }437 }438 if err != nil {439 j.fatal("invalid number")440 return 0, false441 }442 j.curSize = 0443 j.pos = j.pos.incHoriz(i - j.pos.bpos)444 return f, true445}446// parseDollarToken parses a $123 or $tag or $^Operator or447// $^Operator(PARAMS…) token. dollarToken is never empty, does not448// contain '$' and dollarPos is the '$' position.449func (j *json) parseDollarToken(dollarToken string, dollarPos Position, inString bool) (int, any) {450 firstRune, _ := utf8.DecodeRuneInString(dollarToken)451 // Test for $123452 if firstRune >= '0' && firstRune <= '9' {453 np, err := strconv.ParseUint(dollarToken, 10, 64)454 if err != nil {455 j.error("invalid numeric placeholder", dollarPos)456 return PLACEHOLDER, nil // continue parsing457 }458 if np == 0 {459 j.error(460 fmt.Sprintf(`invalid numeric placeholder "$%s", it should start at "$1"`, dollarToken),461 dollarPos)462 return PLACEHOLDER, nil // continue parsing463 }...

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parseDollarToken

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1import (2func main() {3 var jsonBlob = []byte(`{"Name": "Platypus", "Order": "Monotremata"}`)4 type Animal struct {5 }6 err := json.Unmarshal(jsonBlob, &animal)7 if err != nil {8 fmt.Println("error:", err)9 }10 fmt.Printf("%+v11}12{Name:Platypus Order:Monotremata}13import (14func main() {15 var jsonBlob = []byte(`{"Name": "Platypus", "Order": "Monotremata"}`)16 type Animal struct {17 }18 err := json.Unmarshal(jsonBlob, &animal)19 if err != nil {20 fmt.Println("error:", err)21 }22 fmt.Printf("%+v23}24{Name:Platypus Order:Monotremata}25import (26func main() {27 var jsonBlob = []byte(`{"Name": "Platypus", "Order": "Monotremata"}`)28 type Animal struct {29 }30 err := json.Unmarshal(jsonBlob, &animal)31 if err != nil {32 fmt.Println("error:", err)33 }34 fmt.Printf("%+v35}36{Name:Platypus Order:Monotremata}37import (38func main() {39 var jsonBlob = []byte(`{"Name": "Platypus", "Order": "Monotremata"}`)40 type Animal struct {41 }42 err := json.Unmarshal(jsonBlob, &animal)43 if err != nil {44 fmt.Println("error:", err)45 }46 fmt.Printf("%+v47}

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parseDollarToken

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1import (2type Person struct {3}4func main() {5 data := []byte(`{"Name":"Bob","Age":32}`)6 json.Unmarshal(data, &p)7 fmt.Println(p)8}9import (10type Person struct {11}12func main() {13 data := []byte(`{"Name":"Bob","Age":32}`)14 json.Unmarshal(data, &p)15 fmt.Println(p)16}17import (18type Person struct {19}20func main() {21 data := []byte(`{"Name":"Bob","Age":32}`)22 json.Unmarshal(data, &p)23 fmt.Println(p)24}25import (26type Person struct {27}28func main() {29 data := []byte(`{"Name":"Bob","Age":32}`)30 json.Unmarshal(data, &p)31 fmt.Println(p)32}33import (34type Person struct {35}36func main() {37 data := []byte(`{"Name":"Bob","Age":32}`)38 json.Unmarshal(data, &p)39 fmt.Println(p)40}41import (

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parseDollarToken

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1import (2func main() {3 jsonString := `{"name":"John", "age":30, "cars":{"car1":"Ford", "car2":"BMW", "car3":"Fiat"}}`4 var result map[string]interface{}5 json.Unmarshal([]byte(jsonString), &result)6 fmt.Println(result)7 fmt.Println(result["name"])8 fmt.Println(result["age"])9 fmt.Println(result["cars"])10}

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parseDollarToken

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1import (2func main() {3 fmt.Println(json.ParseDollarToken(`{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}`))4}5import (6func main() {7 fmt.Println(json.ParseDollarToken(`{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}`))8}9import (10func main() {11 fmt.Println(json.ParseDollarToken(`{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}`))12}13import (14func main() {15 fmt.Println(json.ParseDollarToken(`{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}`))16}17import (18func main() {19 fmt.Println(json.ParseDollarToken(`{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}`))20}21import (22func main() {23 fmt.Println(json.ParseDollarToken(`{"jsonrpc": "2.0", "method": "subtract", "params": [42, 23], "id": 1}`))24}25import (26func main() {27 fmt.Println(json.ParseDollarToken(`{"jsonrpc": "2.0", "method

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