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-rw-r--r--vendor/github.com/d5/tengo/stdlib/json/decode.go374
-rw-r--r--vendor/github.com/d5/tengo/stdlib/json/encode.go147
-rw-r--r--vendor/github.com/d5/tengo/stdlib/json/scanner.go559
3 files changed, 0 insertions, 1080 deletions
diff --git a/vendor/github.com/d5/tengo/stdlib/json/decode.go b/vendor/github.com/d5/tengo/stdlib/json/decode.go
deleted file mode 100644
index 5a3fe6c7..00000000
--- a/vendor/github.com/d5/tengo/stdlib/json/decode.go
+++ /dev/null
@@ -1,374 +0,0 @@
-// A modified version of Go's JSON implementation.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
- "strconv"
- "unicode"
- "unicode/utf16"
- "unicode/utf8"
-
- "github.com/d5/tengo/objects"
-)
-
-// Decode parses the JSON-encoded data and returns the result object.
-func Decode(data []byte) (objects.Object, error) {
- var d decodeState
- err := checkValid(data, &d.scan)
- if err != nil {
- return nil, err
- }
-
- d.init(data)
- d.scan.reset()
- d.scanWhile(scanSkipSpace)
-
- return d.value()
-}
-
-// decodeState represents the state while decoding a JSON value.
-type decodeState struct {
- data []byte
- off int // next read offset in data
- opcode int // last read result
- scan scanner
-}
-
-// readIndex returns the position of the last byte read.
-func (d *decodeState) readIndex() int {
- return d.off - 1
-}
-
-const phasePanicMsg = "JSON decoder out of sync - data changing underfoot?"
-
-func (d *decodeState) init(data []byte) *decodeState {
- d.data = data
- d.off = 0
- return d
-}
-
-// scanNext processes the byte at d.data[d.off].
-func (d *decodeState) scanNext() {
- if d.off < len(d.data) {
- d.opcode = d.scan.step(&d.scan, d.data[d.off])
- d.off++
- } else {
- d.opcode = d.scan.eof()
- d.off = len(d.data) + 1 // mark processed EOF with len+1
- }
-}
-
-// scanWhile processes bytes in d.data[d.off:] until it
-// receives a scan code not equal to op.
-func (d *decodeState) scanWhile(op int) {
- s, data, i := &d.scan, d.data, d.off
- for i < len(data) {
- newOp := s.step(s, data[i])
- i++
- if newOp != op {
- d.opcode = newOp
- d.off = i
- return
- }
- }
-
- d.off = len(data) + 1 // mark processed EOF with len+1
- d.opcode = d.scan.eof()
-}
-
-func (d *decodeState) value() (objects.Object, error) {
- switch d.opcode {
- default:
- panic(phasePanicMsg)
-
- case scanBeginArray:
- o, err := d.array()
- if err != nil {
- return nil, err
- }
-
- d.scanNext()
-
- return o, nil
-
- case scanBeginObject:
- o, err := d.object()
- if err != nil {
- return nil, err
- }
-
- d.scanNext()
-
- return o, nil
-
- case scanBeginLiteral:
- return d.literal()
- }
-}
-
-func (d *decodeState) array() (objects.Object, error) {
- var arr []objects.Object
- for {
- // Look ahead for ] - can only happen on first iteration.
- d.scanWhile(scanSkipSpace)
- if d.opcode == scanEndArray {
- break
- }
-
- o, err := d.value()
- if err != nil {
- return nil, err
- }
- arr = append(arr, o)
-
- // Next token must be , or ].
- if d.opcode == scanSkipSpace {
- d.scanWhile(scanSkipSpace)
- }
- if d.opcode == scanEndArray {
- break
- }
- if d.opcode != scanArrayValue {
- panic(phasePanicMsg)
- }
- }
-
- return &objects.Array{Value: arr}, nil
-}
-
-func (d *decodeState) object() (objects.Object, error) {
- m := make(map[string]objects.Object)
- for {
- // Read opening " of string key or closing }.
- d.scanWhile(scanSkipSpace)
- if d.opcode == scanEndObject {
- // closing } - can only happen on first iteration.
- break
- }
- if d.opcode != scanBeginLiteral {
- panic(phasePanicMsg)
- }
-
- // Read string key.
- start := d.readIndex()
- d.scanWhile(scanContinue)
- item := d.data[start:d.readIndex()]
- key, ok := unquote(item)
- if !ok {
- panic(phasePanicMsg)
- }
-
- // Read : before value.
- if d.opcode == scanSkipSpace {
- d.scanWhile(scanSkipSpace)
- }
- if d.opcode != scanObjectKey {
- panic(phasePanicMsg)
- }
- d.scanWhile(scanSkipSpace)
-
- // Read value.
- o, err := d.value()
- if err != nil {
- return nil, err
- }
-
- m[key] = o
-
- // Next token must be , or }.
- if d.opcode == scanSkipSpace {
- d.scanWhile(scanSkipSpace)
- }
- if d.opcode == scanEndObject {
- break
- }
- if d.opcode != scanObjectValue {
- panic(phasePanicMsg)
- }
- }
-
- return &objects.Map{Value: m}, nil
-}
-
-func (d *decodeState) literal() (objects.Object, error) {
- // All bytes inside literal return scanContinue op code.
- start := d.readIndex()
- d.scanWhile(scanContinue)
-
- item := d.data[start:d.readIndex()]
-
- switch c := item[0]; c {
- case 'n': // null
- return objects.UndefinedValue, nil
-
- case 't', 'f': // true, false
- if c == 't' {
- return objects.TrueValue, nil
- }
- return objects.FalseValue, nil
-
- case '"': // string
- s, ok := unquote(item)
- if !ok {
- panic(phasePanicMsg)
- }
- return &objects.String{Value: s}, nil
-
- default: // number
- if c != '-' && (c < '0' || c > '9') {
- panic(phasePanicMsg)
- }
-
- n, _ := strconv.ParseFloat(string(item), 10)
- return &objects.Float{Value: n}, nil
- }
-}
-
-// getu4 decodes \uXXXX from the beginning of s, returning the hex value,
-// or it returns -1.
-func getu4(s []byte) rune {
- if len(s) < 6 || s[0] != '\\' || s[1] != 'u' {
- return -1
- }
- var r rune
- for _, c := range s[2:6] {
- switch {
- case '0' <= c && c <= '9':
- c = c - '0'
- case 'a' <= c && c <= 'f':
- c = c - 'a' + 10
- case 'A' <= c && c <= 'F':
- c = c - 'A' + 10
- default:
- return -1
- }
- r = r*16 + rune(c)
- }
- return r
-}
-
-// unquote converts a quoted JSON string literal s into an actual string t.
-// The rules are different than for Go, so cannot use strconv.Unquote.
-func unquote(s []byte) (t string, ok bool) {
- s, ok = unquoteBytes(s)
- t = string(s)
- return
-}
-
-func unquoteBytes(s []byte) (t []byte, ok bool) {
- if len(s) < 2 || s[0] != '"' || s[len(s)-1] != '"' {
- return
- }
- s = s[1 : len(s)-1]
-
- // Check for unusual characters. If there are none,
- // then no unquoting is needed, so return a slice of the
- // original bytes.
- r := 0
- for r < len(s) {
- c := s[r]
- if c == '\\' || c == '"' || c < ' ' {
- break
- }
- if c < utf8.RuneSelf {
- r++
- continue
- }
- rr, size := utf8.DecodeRune(s[r:])
- if rr == utf8.RuneError && size == 1 {
- break
- }
- r += size
- }
- if r == len(s) {
- return s, true
- }
-
- b := make([]byte, len(s)+2*utf8.UTFMax)
- w := copy(b, s[0:r])
- for r < len(s) {
- // Out of room? Can only happen if s is full of
- // malformed UTF-8 and we're replacing each
- // byte with RuneError.
- if w >= len(b)-2*utf8.UTFMax {
- nb := make([]byte, (len(b)+utf8.UTFMax)*2)
- copy(nb, b[0:w])
- b = nb
- }
- switch c := s[r]; {
- case c == '\\':
- r++
- if r >= len(s) {
- return
- }
- switch s[r] {
- default:
- return
- case '"', '\\', '/', '\'':
- b[w] = s[r]
- r++
- w++
- case 'b':
- b[w] = '\b'
- r++
- w++
- case 'f':
- b[w] = '\f'
- r++
- w++
- case 'n':
- b[w] = '\n'
- r++
- w++
- case 'r':
- b[w] = '\r'
- r++
- w++
- case 't':
- b[w] = '\t'
- r++
- w++
- case 'u':
- r--
- rr := getu4(s[r:])
- if rr < 0 {
- return
- }
- r += 6
- if utf16.IsSurrogate(rr) {
- rr1 := getu4(s[r:])
- if dec := utf16.DecodeRune(rr, rr1); dec != unicode.ReplacementChar {
- // A valid pair; consume.
- r += 6
- w += utf8.EncodeRune(b[w:], dec)
- break
- }
- // Invalid surrogate; fall back to replacement rune.
- rr = unicode.ReplacementChar
- }
- w += utf8.EncodeRune(b[w:], rr)
- }
-
- // Quote, control characters are invalid.
- case c == '"', c < ' ':
- return
-
- // ASCII
- case c < utf8.RuneSelf:
- b[w] = c
- r++
- w++
-
- // Coerce to well-formed UTF-8.
- default:
- rr, size := utf8.DecodeRune(s[r:])
- r += size
- w += utf8.EncodeRune(b[w:], rr)
- }
- }
- return b[0:w], true
-}
diff --git a/vendor/github.com/d5/tengo/stdlib/json/encode.go b/vendor/github.com/d5/tengo/stdlib/json/encode.go
deleted file mode 100644
index 2b8b17eb..00000000
--- a/vendor/github.com/d5/tengo/stdlib/json/encode.go
+++ /dev/null
@@ -1,147 +0,0 @@
-// A modified version of Go's JSON implementation.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import (
- "encoding/base64"
- "errors"
- "math"
- "strconv"
-
- "github.com/d5/tengo/objects"
-)
-
-// Encode returns the JSON encoding of the object.
-func Encode(o objects.Object) ([]byte, error) {
- var b []byte
-
- switch o := o.(type) {
- case *objects.Array:
- b = append(b, '[')
- len1 := len(o.Value) - 1
- for idx, elem := range o.Value {
- eb, err := Encode(elem)
- if err != nil {
- return nil, err
- }
- b = append(b, eb...)
- if idx < len1 {
- b = append(b, ',')
- }
- }
- b = append(b, ']')
- case *objects.ImmutableArray:
- b = append(b, '[')
- len1 := len(o.Value) - 1
- for idx, elem := range o.Value {
- eb, err := Encode(elem)
- if err != nil {
- return nil, err
- }
- b = append(b, eb...)
- if idx < len1 {
- b = append(b, ',')
- }
- }
- b = append(b, ']')
- case *objects.Map:
- b = append(b, '{')
- len1 := len(o.Value) - 1
- idx := 0
- for key, value := range o.Value {
- b = strconv.AppendQuote(b, key)
- b = append(b, ':')
- eb, err := Encode(value)
- if err != nil {
- return nil, err
- }
- b = append(b, eb...)
- if idx < len1 {
- b = append(b, ',')
- }
- idx++
- }
- b = append(b, '}')
- case *objects.ImmutableMap:
- b = append(b, '{')
- len1 := len(o.Value) - 1
- idx := 0
- for key, value := range o.Value {
- b = strconv.AppendQuote(b, key)
- b = append(b, ':')
- eb, err := Encode(value)
- if err != nil {
- return nil, err
- }
- b = append(b, eb...)
- if idx < len1 {
- b = append(b, ',')
- }
- idx++
- }
- b = append(b, '}')
- case *objects.Bool:
- if o.IsFalsy() {
- b = strconv.AppendBool(b, false)
- } else {
- b = strconv.AppendBool(b, true)
- }
- case *objects.Bytes:
- b = append(b, '"')
- encodedLen := base64.StdEncoding.EncodedLen(len(o.Value))
- dst := make([]byte, encodedLen)
- base64.StdEncoding.Encode(dst, o.Value)
- b = append(b, dst...)
- b = append(b, '"')
- case *objects.Char:
- b = strconv.AppendInt(b, int64(o.Value), 10)
- case *objects.Float:
- var y []byte
-
- f := o.Value
- if math.IsInf(f, 0) || math.IsNaN(f) {
- return nil, errors.New("unsupported float value")
- }
-
- // Convert as if by ES6 number to string conversion.
- // This matches most other JSON generators.
- abs := math.Abs(f)
- fmt := byte('f')
- if abs != 0 {
- if abs < 1e-6 || abs >= 1e21 {
- fmt = 'e'
- }
- }
- y = strconv.AppendFloat(y, f, fmt, -1, 64)
- if fmt == 'e' {
- // clean up e-09 to e-9
- n := len(y)
- if n >= 4 && y[n-4] == 'e' && y[n-3] == '-' && y[n-2] == '0' {
- y[n-2] = y[n-1]
- y = y[:n-1]
- }
- }
-
- b = append(b, y...)
- case *objects.Int:
- b = strconv.AppendInt(b, o.Value, 10)
- case *objects.String:
- b = strconv.AppendQuote(b, o.Value)
- case *objects.Time:
- y, err := o.Value.MarshalJSON()
- if err != nil {
- return nil, err
- }
- b = append(b, y...)
- case *objects.Undefined:
- b = append(b, "null"...)
- default:
- // unknown type: ignore
- }
-
- return b, nil
-}
diff --git a/vendor/github.com/d5/tengo/stdlib/json/scanner.go b/vendor/github.com/d5/tengo/stdlib/json/scanner.go
deleted file mode 100644
index 8fc6776d..00000000
--- a/vendor/github.com/d5/tengo/stdlib/json/scanner.go
+++ /dev/null
@@ -1,559 +0,0 @@
-// A modified version of Go's JSON implementation.
-
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package json
-
-import "strconv"
-
-func checkValid(data []byte, scan *scanner) error {
- scan.reset()
- for _, c := range data {
- scan.bytes++
- if scan.step(scan, c) == scanError {
- return scan.err
- }
- }
- if scan.eof() == scanError {
- return scan.err
- }
- return nil
-}
-
-// A SyntaxError is a description of a JSON syntax error.
-type SyntaxError struct {
- msg string // description of error
- Offset int64 // error occurred after reading Offset bytes
-}
-
-func (e *SyntaxError) Error() string { return e.msg }
-
-// A scanner is a JSON scanning state machine.
-// Callers call scan.reset() and then pass bytes in one at a time
-// by calling scan.step(&scan, c) for each byte.
-// The return value, referred to as an opcode, tells the
-// caller about significant parsing events like beginning
-// and ending literals, objects, and arrays, so that the
-// caller can follow along if it wishes.
-// The return value scanEnd indicates that a single top-level
-// JSON value has been completed, *before* the byte that
-// just got passed in. (The indication must be delayed in order
-// to recognize the end of numbers: is 123 a whole value or
-// the beginning of 12345e+6?).
-type scanner struct {
- // The step is a func to be called to execute the next transition.
- // Also tried using an integer constant and a single func
- // with a switch, but using the func directly was 10% faster
- // on a 64-bit Mac Mini, and it's nicer to read.
- step func(*scanner, byte) int
-
- // Reached end of top-level value.
- endTop bool
-
- // Stack of what we're in the middle of - array values, object keys, object values.
- parseState []int
-
- // Error that happened, if any.
- err error
-
- // total bytes consumed, updated by decoder.Decode
- bytes int64
-}
-
-// These values are returned by the state transition functions
-// assigned to scanner.state and the method scanner.eof.
-// They give details about the current state of the scan that
-// callers might be interested to know about.
-// It is okay to ignore the return value of any particular
-// call to scanner.state: if one call returns scanError,
-// every subsequent call will return scanError too.
-const (
- // Continue.
- scanContinue = iota // uninteresting byte
- scanBeginLiteral // end implied by next result != scanContinue
- scanBeginObject // begin object
- scanObjectKey // just finished object key (string)
- scanObjectValue // just finished non-last object value
- scanEndObject // end object (implies scanObjectValue if possible)
- scanBeginArray // begin array
- scanArrayValue // just finished array value
- scanEndArray // end array (implies scanArrayValue if possible)
- scanSkipSpace // space byte; can skip; known to be last "continue" result
-
- // Stop.
- scanEnd // top-level value ended *before* this byte; known to be first "stop" result
- scanError // hit an error, scanner.err.
-)
-
-// These values are stored in the parseState stack.
-// They give the current state of a composite value
-// being scanned. If the parser is inside a nested value
-// the parseState describes the nested state, outermost at entry 0.
-const (
- parseObjectKey = iota // parsing object key (before colon)
- parseObjectValue // parsing object value (after colon)
- parseArrayValue // parsing array value
-)
-
-// reset prepares the scanner for use.
-// It must be called before calling s.step.
-func (s *scanner) reset() {
- s.step = stateBeginValue
- s.parseState = s.parseState[0:0]
- s.err = nil
- s.endTop = false
-}
-
-// eof tells the scanner that the end of input has been reached.
-// It returns a scan status just as s.step does.
-func (s *scanner) eof() int {
- if s.err != nil {
- return scanError
- }
- if s.endTop {
- return scanEnd
- }
- s.step(s, ' ')
- if s.endTop {
- return scanEnd
- }
- if s.err == nil {
- s.err = &SyntaxError{"unexpected end of JSON input", s.bytes}
- }
- return scanError
-}
-
-// pushParseState pushes a new parse state p onto the parse stack.
-func (s *scanner) pushParseState(p int) {
- s.parseState = append(s.parseState, p)
-}
-
-// popParseState pops a parse state (already obtained) off the stack
-// and updates s.step accordingly.
-func (s *scanner) popParseState() {
- n := len(s.parseState) - 1
- s.parseState = s.parseState[0:n]
- if n == 0 {
- s.step = stateEndTop
- s.endTop = true
- } else {
- s.step = stateEndValue
- }
-}
-
-func isSpace(c byte) bool {
- return c == ' ' || c == '\t' || c == '\r' || c == '\n'
-}
-
-// stateBeginValueOrEmpty is the state after reading `[`.
-func stateBeginValueOrEmpty(s *scanner, c byte) int {
- if c <= ' ' && isSpace(c) {
- return scanSkipSpace
- }
- if c == ']' {
- return stateEndValue(s, c)
- }
- return stateBeginValue(s, c)
-}
-
-// stateBeginValue is the state at the beginning of the input.
-func stateBeginValue(s *scanner, c byte) int {
- if c <= ' ' && isSpace(c) {
- return scanSkipSpace
- }
- switch c {
- case '{':
- s.step = stateBeginStringOrEmpty
- s.pushParseState(parseObjectKey)
- return scanBeginObject
- case '[':
- s.step = stateBeginValueOrEmpty
- s.pushParseState(parseArrayValue)
- return scanBeginArray
- case '"':
- s.step = stateInString
- return scanBeginLiteral
- case '-':
- s.step = stateNeg
- return scanBeginLiteral
- case '0': // beginning of 0.123
- s.step = state0
- return scanBeginLiteral
- case 't': // beginning of true
- s.step = stateT
- return scanBeginLiteral
- case 'f': // beginning of false
- s.step = stateF
- return scanBeginLiteral
- case 'n': // beginning of null
- s.step = stateN
- return scanBeginLiteral
- }
- if '1' <= c && c <= '9' { // beginning of 1234.5
- s.step = state1
- return scanBeginLiteral
- }
- return s.error(c, "looking for beginning of value")
-}
-
-// stateBeginStringOrEmpty is the state after reading `{`.
-func stateBeginStringOrEmpty(s *scanner, c byte) int {
- if c <= ' ' && isSpace(c) {
- return scanSkipSpace
- }
- if c == '}' {
- n := len(s.parseState)
- s.parseState[n-1] = parseObjectValue
- return stateEndValue(s, c)
- }
- return stateBeginString(s, c)
-}
-
-// stateBeginString is the state after reading `{"key": value,`.
-func stateBeginString(s *scanner, c byte) int {
- if c <= ' ' && isSpace(c) {
- return scanSkipSpace
- }
- if c == '"' {
- s.step = stateInString
- return scanBeginLiteral
- }
- return s.error(c, "looking for beginning of object key string")
-}
-
-// stateEndValue is the state after completing a value,
-// such as after reading `{}` or `true` or `["x"`.
-func stateEndValue(s *scanner, c byte) int {
- n := len(s.parseState)
- if n == 0 {
- // Completed top-level before the current byte.
- s.step = stateEndTop
- s.endTop = true
- return stateEndTop(s, c)
- }
- if c <= ' ' && isSpace(c) {
- s.step = stateEndValue
- return scanSkipSpace
- }
- ps := s.parseState[n-1]
- switch ps {
- case parseObjectKey:
- if c == ':' {
- s.parseState[n-1] = parseObjectValue
- s.step = stateBeginValue
- return scanObjectKey
- }
- return s.error(c, "after object key")
- case parseObjectValue:
- if c == ',' {
- s.parseState[n-1] = parseObjectKey
- s.step = stateBeginString
- return scanObjectValue
- }
- if c == '}' {
- s.popParseState()
- return scanEndObject
- }
- return s.error(c, "after object key:value pair")
- case parseArrayValue:
- if c == ',' {
- s.step = stateBeginValue
- return scanArrayValue
- }
- if c == ']' {
- s.popParseState()
- return scanEndArray
- }
- return s.error(c, "after array element")
- }
- return s.error(c, "")
-}
-
-// stateEndTop is the state after finishing the top-level value,
-// such as after reading `{}` or `[1,2,3]`.
-// Only space characters should be seen now.
-func stateEndTop(s *scanner, c byte) int {
- if !isSpace(c) {
- // Complain about non-space byte on next call.
- s.error(c, "after top-level value")
- }
- return scanEnd
-}
-
-// stateInString is the state after reading `"`.
-func stateInString(s *scanner, c byte) int {
- if c == '"' {
- s.step = stateEndValue
- return scanContinue
- }
- if c == '\\' {
- s.step = stateInStringEsc
- return scanContinue
- }
- if c < 0x20 {
- return s.error(c, "in string literal")
- }
- return scanContinue
-}
-
-// stateInStringEsc is the state after reading `"\` during a quoted string.
-func stateInStringEsc(s *scanner, c byte) int {
- switch c {
- case 'b', 'f', 'n', 'r', 't', '\\', '/', '"':
- s.step = stateInString
- return scanContinue
- case 'u':
- s.step = stateInStringEscU
- return scanContinue
- }
- return s.error(c, "in string escape code")
-}
-
-// stateInStringEscU is the state after reading `"\u` during a quoted string.
-func stateInStringEscU(s *scanner, c byte) int {
- if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
- s.step = stateInStringEscU1
- return scanContinue
- }
- // numbers
- return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateInStringEscU1 is the state after reading `"\u1` during a quoted string.
-func stateInStringEscU1(s *scanner, c byte) int {
- if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
- s.step = stateInStringEscU12
- return scanContinue
- }
- // numbers
- return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateInStringEscU12 is the state after reading `"\u12` during a quoted string.
-func stateInStringEscU12(s *scanner, c byte) int {
- if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
- s.step = stateInStringEscU123
- return scanContinue
- }
- // numbers
- return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateInStringEscU123 is the state after reading `"\u123` during a quoted string.
-func stateInStringEscU123(s *scanner, c byte) int {
- if '0' <= c && c <= '9' || 'a' <= c && c <= 'f' || 'A' <= c && c <= 'F' {
- s.step = stateInString
- return scanContinue
- }
- // numbers
- return s.error(c, "in \\u hexadecimal character escape")
-}
-
-// stateNeg is the state after reading `-` during a number.
-func stateNeg(s *scanner, c byte) int {
- if c == '0' {
- s.step = state0
- return scanContinue
- }
- if '1' <= c && c <= '9' {
- s.step = state1
- return scanContinue
- }
- return s.error(c, "in numeric literal")
-}
-
-// state1 is the state after reading a non-zero integer during a number,
-// such as after reading `1` or `100` but not `0`.
-func state1(s *scanner, c byte) int {
- if '0' <= c && c <= '9' {
- s.step = state1
- return scanContinue
- }
- return state0(s, c)
-}
-
-// state0 is the state after reading `0` during a number.
-func state0(s *scanner, c byte) int {
- if c == '.' {
- s.step = stateDot
- return scanContinue
- }
- if c == 'e' || c == 'E' {
- s.step = stateE
- return scanContinue
- }
- return stateEndValue(s, c)
-}
-
-// stateDot is the state after reading the integer and decimal point in a number,
-// such as after reading `1.`.
-func stateDot(s *scanner, c byte) int {
- if '0' <= c && c <= '9' {
- s.step = stateDot0
- return scanContinue
- }
- return s.error(c, "after decimal point in numeric literal")
-}
-
-// stateDot0 is the state after reading the integer, decimal point, and subsequent
-// digits of a number, such as after reading `3.14`.
-func stateDot0(s *scanner, c byte) int {
- if '0' <= c && c <= '9' {
- return scanContinue
- }
- if c == 'e' || c == 'E' {
- s.step = stateE
- return scanContinue
- }
- return stateEndValue(s, c)
-}
-
-// stateE is the state after reading the mantissa and e in a number,
-// such as after reading `314e` or `0.314e`.
-func stateE(s *scanner, c byte) int {
- if c == '+' || c == '-' {
- s.step = stateESign
- return scanContinue
- }
- return stateESign(s, c)
-}
-
-// stateESign is the state after reading the mantissa, e, and sign in a number,
-// such as after reading `314e-` or `0.314e+`.
-func stateESign(s *scanner, c byte) int {
- if '0' <= c && c <= '9' {
- s.step = stateE0
- return scanContinue
- }
- return s.error(c, "in exponent of numeric literal")
-}
-
-// stateE0 is the state after reading the mantissa, e, optional sign,
-// and at least one digit of the exponent in a number,
-// such as after reading `314e-2` or `0.314e+1` or `3.14e0`.
-func stateE0(s *scanner, c byte) int {
- if '0' <= c && c <= '9' {
- return scanContinue
- }
- return stateEndValue(s, c)
-}
-
-// stateT is the state after reading `t`.
-func stateT(s *scanner, c byte) int {
- if c == 'r' {
- s.step = stateTr
- return scanContinue
- }
- return s.error(c, "in literal true (expecting 'r')")
-}
-
-// stateTr is the state after reading `tr`.
-func stateTr(s *scanner, c byte) int {
- if c == 'u' {
- s.step = stateTru
- return scanContinue
- }
- return s.error(c, "in literal true (expecting 'u')")
-}
-
-// stateTru is the state after reading `tru`.
-func stateTru(s *scanner, c byte) int {
- if c == 'e' {
- s.step = stateEndValue
- return scanContinue
- }
- return s.error(c, "in literal true (expecting 'e')")
-}
-
-// stateF is the state after reading `f`.
-func stateF(s *scanner, c byte) int {
- if c == 'a' {
- s.step = stateFa
- return scanContinue
- }
- return s.error(c, "in literal false (expecting 'a')")
-}
-
-// stateFa is the state after reading `fa`.
-func stateFa(s *scanner, c byte) int {
- if c == 'l' {
- s.step = stateFal
- return scanContinue
- }
- return s.error(c, "in literal false (expecting 'l')")
-}
-
-// stateFal is the state after reading `fal`.
-func stateFal(s *scanner, c byte) int {
- if c == 's' {
- s.step = stateFals
- return scanContinue
- }
- return s.error(c, "in literal false (expecting 's')")
-}
-
-// stateFals is the state after reading `fals`.
-func stateFals(s *scanner, c byte) int {
- if c == 'e' {
- s.step = stateEndValue
- return scanContinue
- }
- return s.error(c, "in literal false (expecting 'e')")
-}
-
-// stateN is the state after reading `n`.
-func stateN(s *scanner, c byte) int {
- if c == 'u' {
- s.step = stateNu
- return scanContinue
- }
- return s.error(c, "in literal null (expecting 'u')")
-}
-
-// stateNu is the state after reading `nu`.
-func stateNu(s *scanner, c byte) int {
- if c == 'l' {
- s.step = stateNul
- return scanContinue
- }
- return s.error(c, "in literal null (expecting 'l')")
-}
-
-// stateNul is the state after reading `nul`.
-func stateNul(s *scanner, c byte) int {
- if c == 'l' {
- s.step = stateEndValue
- return scanContinue
- }
- return s.error(c, "in literal null (expecting 'l')")
-}
-
-// stateError is the state after reaching a syntax error,
-// such as after reading `[1}` or `5.1.2`.
-func stateError(s *scanner, c byte) int {
- return scanError
-}
-
-// error records an error and switches to the error state.
-func (s *scanner) error(c byte, context string) int {
- s.step = stateError
- s.err = &SyntaxError{"invalid character " + quoteChar(c) + " " + context, s.bytes}
- return scanError
-}
-
-// quoteChar formats c as a quoted character literal
-func quoteChar(c byte) string {
- // special cases - different from quoted strings
- if c == '\'' {
- return `'\''`
- }
- if c == '"' {
- return `'"'`
- }
-
- // use quoted string with different quotation marks
- s := strconv.Quote(string(c))
- return "'" + s[1:len(s)-1] + "'"
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 14:12:08 +0000