diff options
Diffstat (limited to '')
-rw-r--r-- | dependencies/pkg/mod/github.com/goccy/go-yaml@v1.9.6/token/token.go | 1036 |
1 files changed, 1036 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/github.com/goccy/go-yaml@v1.9.6/token/token.go b/dependencies/pkg/mod/github.com/goccy/go-yaml@v1.9.6/token/token.go new file mode 100644 index 0000000..796b522 --- /dev/null +++ b/dependencies/pkg/mod/github.com/goccy/go-yaml@v1.9.6/token/token.go @@ -0,0 +1,1036 @@ +package token + +import ( + "fmt" + "strings" +) + +// Character type for character +type Character byte + +const ( + // SequenceEntryCharacter character for sequence entry + SequenceEntryCharacter Character = '-' + // MappingKeyCharacter character for mapping key + MappingKeyCharacter Character = '?' + // MappingValueCharacter character for mapping value + MappingValueCharacter Character = ':' + // CollectEntryCharacter character for collect entry + CollectEntryCharacter Character = ',' + // SequenceStartCharacter character for sequence start + SequenceStartCharacter Character = '[' + // SequenceEndCharacter character for sequence end + SequenceEndCharacter Character = ']' + // MappingStartCharacter character for mapping start + MappingStartCharacter Character = '{' + // MappingEndCharacter character for mapping end + MappingEndCharacter Character = '}' + // CommentCharacter character for comment + CommentCharacter Character = '#' + // AnchorCharacter character for anchor + AnchorCharacter Character = '&' + // AliasCharacter character for alias + AliasCharacter Character = '*' + // TagCharacter character for tag + TagCharacter Character = '!' + // LiteralCharacter character for literal + LiteralCharacter Character = '|' + // FoldedCharacter character for folded + FoldedCharacter Character = '>' + // SingleQuoteCharacter character for single quote + SingleQuoteCharacter Character = '\'' + // DoubleQuoteCharacter character for double quote + DoubleQuoteCharacter Character = '"' + // DirectiveCharacter character for directive + DirectiveCharacter Character = '%' + // SpaceCharacter character for space + SpaceCharacter Character = ' ' + // LineBreakCharacter character for line break + LineBreakCharacter Character = '\n' +) + +// Type type identifier for token +type Type int + +const ( + // UnknownType reserve for invalid type + UnknownType Type = iota + // DocumentHeaderType type for DocumentHeader token + DocumentHeaderType + // DocumentEndType type for DocumentEnd token + DocumentEndType + // SequenceEntryType type for SequenceEntry token + SequenceEntryType + // MappingKeyType type for MappingKey token + MappingKeyType + // MappingValueType type for MappingValue token + MappingValueType + // MergeKeyType type for MergeKey token + MergeKeyType + // CollectEntryType type for CollectEntry token + CollectEntryType + // SequenceStartType type for SequenceStart token + SequenceStartType + // SequenceEndType type for SequenceEnd token + SequenceEndType + // MappingStartType type for MappingStart token + MappingStartType + // MappingEndType type for MappingEnd token + MappingEndType + // CommentType type for Comment token + CommentType + // AnchorType type for Anchor token + AnchorType + // AliasType type for Alias token + AliasType + // TagType type for Tag token + TagType + // LiteralType type for Literal token + LiteralType + // FoldedType type for Folded token + FoldedType + // SingleQuoteType type for SingleQuote token + SingleQuoteType + // DoubleQuoteType type for DoubleQuote token + DoubleQuoteType + // DirectiveType type for Directive token + DirectiveType + // SpaceType type for Space token + SpaceType + // NullType type for Null token + NullType + // InfinityType type for Infinity token + InfinityType + // NanType type for Nan token + NanType + // IntegerType type for Integer token + IntegerType + // BinaryIntegerType type for BinaryInteger token + BinaryIntegerType + // OctetIntegerType type for OctetInteger token + OctetIntegerType + // HexIntegerType type for HexInteger token + HexIntegerType + // FloatType type for Float token + FloatType + // StringType type for String token + StringType + // BoolType type for Bool token + BoolType +) + +// String type identifier to text +func (t Type) String() string { + switch t { + case UnknownType: + return "Unknown" + case DocumentHeaderType: + return "DocumentHeader" + case DocumentEndType: + return "DocumentEnd" + case SequenceEntryType: + return "SequenceEntry" + case MappingKeyType: + return "MappingKey" + case MappingValueType: + return "MappingValue" + case MergeKeyType: + return "MergeKey" + case CollectEntryType: + return "CollectEntry" + case SequenceStartType: + return "SequenceStart" + case SequenceEndType: + return "SequenceEnd" + case MappingStartType: + return "MappingStart" + case MappingEndType: + return "MappingEnd" + case CommentType: + return "Comment" + case AnchorType: + return "Anchor" + case AliasType: + return "Alias" + case TagType: + return "Tag" + case LiteralType: + return "Literal" + case FoldedType: + return "Folded" + case SingleQuoteType: + return "SingleQuote" + case DoubleQuoteType: + return "DoubleQuote" + case DirectiveType: + return "Directive" + case SpaceType: + return "Space" + case StringType: + return "String" + case BoolType: + return "Bool" + case IntegerType: + return "Integer" + case BinaryIntegerType: + return "BinaryInteger" + case OctetIntegerType: + return "OctetInteger" + case HexIntegerType: + return "HexInteger" + case FloatType: + return "Float" + case NullType: + return "Null" + case InfinityType: + return "Infinity" + case NanType: + return "Nan" + } + return "" +} + +// CharacterType type for character category +type CharacterType int + +const ( + // CharacterTypeIndicator type of indicator character + CharacterTypeIndicator CharacterType = iota + // CharacterTypeWhiteSpace type of white space character + CharacterTypeWhiteSpace + // CharacterTypeMiscellaneous type of miscellaneous character + CharacterTypeMiscellaneous + // CharacterTypeEscaped type of escaped character + CharacterTypeEscaped +) + +// String character type identifier to text +func (c CharacterType) String() string { + switch c { + case CharacterTypeIndicator: + return "Indicator" + case CharacterTypeWhiteSpace: + return "WhiteSpcae" + case CharacterTypeMiscellaneous: + return "Miscellaneous" + case CharacterTypeEscaped: + return "Escaped" + } + return "" +} + +// Indicator type for indicator +type Indicator int + +const ( + // NotIndicator not indicator + NotIndicator Indicator = iota + // BlockStructureIndicator indicator for block structure ( '-', '?', ':' ) + BlockStructureIndicator + // FlowCollectionIndicator indicator for flow collection ( '[', ']', '{', '}', ',' ) + FlowCollectionIndicator + // CommentIndicator indicator for comment ( '#' ) + CommentIndicator + // NodePropertyIndicator indicator for node property ( '!', '&', '*' ) + NodePropertyIndicator + // BlockScalarIndicator indicator for block scalar ( '|', '>' ) + BlockScalarIndicator + // QuotedScalarIndicator indicator for quoted scalar ( ''', '"' ) + QuotedScalarIndicator + // DirectiveIndicator indicator for directive ( '%' ) + DirectiveIndicator + // InvalidUseOfReservedIndicator indicator for invalid use of reserved keyword ( '@', '`' ) + InvalidUseOfReservedIndicator +) + +// String indicator to text +func (i Indicator) String() string { + switch i { + case NotIndicator: + return "NotIndicator" + case BlockStructureIndicator: + return "BlockStructure" + case FlowCollectionIndicator: + return "FlowCollection" + case CommentIndicator: + return "Comment" + case NodePropertyIndicator: + return "NodeProperty" + case BlockScalarIndicator: + return "BlockScalar" + case QuotedScalarIndicator: + return "QuotedScalar" + case DirectiveIndicator: + return "Directive" + case InvalidUseOfReservedIndicator: + return "InvalidUseOfReserved" + } + return "" +} + +var ( + reservedNullKeywords = []string{ + "null", + "Null", + "NULL", + "~", + } + reservedBoolKeywords = []string{ + "true", + "True", + "TRUE", + "false", + "False", + "FALSE", + } + reservedInfKeywords = []string{ + ".inf", + ".Inf", + ".INF", + "-.inf", + "-.Inf", + "-.INF", + } + reservedNanKeywords = []string{ + ".nan", + ".NaN", + ".NAN", + } + reservedKeywordMap = map[string]func(string, string, *Position) *Token{} +) + +func reservedKeywordToken(typ Type, value, org string, pos *Position) *Token { + return &Token{ + Type: typ, + CharacterType: CharacterTypeMiscellaneous, + Indicator: NotIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +func init() { + for _, keyword := range reservedNullKeywords { + reservedKeywordMap[keyword] = func(value, org string, pos *Position) *Token { + return reservedKeywordToken(NullType, value, org, pos) + } + } + for _, keyword := range reservedBoolKeywords { + reservedKeywordMap[keyword] = func(value, org string, pos *Position) *Token { + return reservedKeywordToken(BoolType, value, org, pos) + } + } + for _, keyword := range reservedInfKeywords { + reservedKeywordMap[keyword] = func(value, org string, pos *Position) *Token { + return reservedKeywordToken(InfinityType, value, org, pos) + } + } + for _, keyword := range reservedNanKeywords { + reservedKeywordMap[keyword] = func(value, org string, pos *Position) *Token { + return reservedKeywordToken(NanType, value, org, pos) + } + } +} + +// ReservedTagKeyword type of reserved tag keyword +type ReservedTagKeyword string + +const ( + // IntegerTag `!!int` tag + IntegerTag ReservedTagKeyword = "!!int" + // FloatTag `!!float` tag + FloatTag ReservedTagKeyword = "!!float" + // NullTag `!!null` tag + NullTag ReservedTagKeyword = "!!null" + // SequenceTag `!!seq` tag + SequenceTag ReservedTagKeyword = "!!seq" + // MappingTag `!!map` tag + MappingTag ReservedTagKeyword = "!!map" + // StringTag `!!str` tag + StringTag ReservedTagKeyword = "!!str" + // BinaryTag `!!binary` tag + BinaryTag ReservedTagKeyword = "!!binary" + // OrderedMapTag `!!omap` tag + OrderedMapTag ReservedTagKeyword = "!!omap" + // SetTag `!!set` tag + SetTag ReservedTagKeyword = "!!set" + // TimestampTag `!!timestamp` tag + TimestampTag ReservedTagKeyword = "!!timestamp" +) + +var ( + // ReservedTagKeywordMap map for reserved tag keywords + ReservedTagKeywordMap = map[ReservedTagKeyword]func(string, string, *Position) *Token{ + IntegerTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + FloatTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + NullTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + SequenceTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + MappingTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + StringTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + BinaryTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + OrderedMapTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + SetTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + TimestampTag: func(value, org string, pos *Position) *Token { + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } + }, + } +) + +type numType int + +const ( + numTypeNone numType = iota + numTypeBinary + numTypeOctet + numTypeHex + numTypeFloat +) + +type numStat struct { + isNum bool + typ numType +} + +func getNumberStat(str string) *numStat { + stat := &numStat{} + if str == "" { + return stat + } + if str == "-" || str == "." || str == "+" || str == "_" { + return stat + } + if str[0] == '_' { + return stat + } + dotFound := false + isNegative := false + isExponent := false + if str[0] == '-' { + isNegative = true + } + for idx, c := range str { + switch c { + case 'x': + if (isNegative && idx == 2) || (!isNegative && idx == 1) { + continue + } + case 'o': + if (isNegative && idx == 2) || (!isNegative && idx == 1) { + continue + } + case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9': + continue + case 'a', 'b', 'c', 'd', 'e', 'f', 'A', 'B', 'C', 'D', 'E', 'F': + if (len(str) > 2 && str[0] == '0' && str[1] == 'x') || + (len(str) > 3 && isNegative && str[1] == '0' && str[2] == 'x') { + // hex number + continue + } + if c == 'b' && ((isNegative && idx == 2) || (!isNegative && idx == 1)) { + // binary number + continue + } + if (c == 'e' || c == 'E') && dotFound { + // exponent + isExponent = true + continue + } + case '.': + if dotFound { + // multiple dot + return stat + } + dotFound = true + continue + case '-': + if idx == 0 || isExponent { + continue + } + case '+': + if idx == 0 || isExponent { + continue + } + case '_': + continue + } + return stat + } + stat.isNum = true + switch { + case dotFound: + stat.typ = numTypeFloat + case strings.HasPrefix(str, "0b") || strings.HasPrefix(str, "-0b"): + stat.typ = numTypeBinary + case strings.HasPrefix(str, "0x") || strings.HasPrefix(str, "-0x"): + stat.typ = numTypeHex + case strings.HasPrefix(str, "0o") || strings.HasPrefix(str, "-0o"): + stat.typ = numTypeOctet + case (len(str) > 1 && str[0] == '0') || (len(str) > 1 && str[0] == '-' && str[1] == '0'): + stat.typ = numTypeOctet + } + return stat +} + +func looksLikeTimeValue(value string) bool { + for i, c := range value { + switch c { + case ':', '1', '2', '3', '4', '5', '6', '7', '8', '9': + continue + case '0': + if i == 0 { + return false + } + continue + } + return false + } + return true +} + +// IsNeedQuoted whether need quote for passed string or not +func IsNeedQuoted(value string) bool { + if value == "" { + return true + } + if _, exists := reservedKeywordMap[value]; exists { + return true + } + if stat := getNumberStat(value); stat.isNum { + return true + } + first := value[0] + switch first { + case '*', '&', '[', '{', '}', ']', ',', '!', '|', '>', '%', '\'', '"': + return true + } + last := value[len(value)-1] + switch last { + case ':': + return true + } + if looksLikeTimeValue(value) { + return true + } + for i, c := range value { + switch c { + case '#', '\\': + return true + case ':': + if i+1 < len(value) && value[i+1] == ' ' { + return true + } + } + } + return false +} + +// LiteralBlockHeader detect literal block scalar header +func LiteralBlockHeader(value string) string { + lbc := DetectLineBreakCharacter(value) + + switch { + case !strings.Contains(value, lbc): + return "" + case strings.HasSuffix(value, fmt.Sprintf("%s%s", lbc, lbc)): + return "|+" + case strings.HasSuffix(value, lbc): + return "|" + default: + return "|-" + } +} + +// New create reserved keyword token or number token and other string token +func New(value string, org string, pos *Position) *Token { + fn := reservedKeywordMap[value] + if fn != nil { + return fn(value, org, pos) + } + if stat := getNumberStat(value); stat.isNum { + tk := &Token{ + Type: IntegerType, + CharacterType: CharacterTypeMiscellaneous, + Indicator: NotIndicator, + Value: value, + Origin: org, + Position: pos, + } + switch stat.typ { + case numTypeFloat: + tk.Type = FloatType + case numTypeBinary: + tk.Type = BinaryIntegerType + case numTypeOctet: + tk.Type = OctetIntegerType + case numTypeHex: + tk.Type = HexIntegerType + } + return tk + } + return String(value, org, pos) +} + +// Position type for position in YAML document +type Position struct { + Line int + Column int + Offset int + IndentNum int + IndentLevel int +} + +// String position to text +func (p *Position) String() string { + return fmt.Sprintf("[level:%d,line:%d,column:%d,offset:%d]", p.IndentLevel, p.Line, p.Column, p.Offset) +} + +// Token type for token +type Token struct { + Type Type + CharacterType CharacterType + Indicator Indicator + Value string + Origin string + Position *Position + Next *Token + Prev *Token +} + +// PreviousType previous token type +func (t *Token) PreviousType() Type { + if t.Prev != nil { + return t.Prev.Type + } + return UnknownType +} + +// NextType next token type +func (t *Token) NextType() Type { + if t.Next != nil { + return t.Next.Type + } + return UnknownType +} + +// AddColumn append column number to current position of column +func (t *Token) AddColumn(col int) { + if t == nil { + return + } + t.Position.Column += col +} + +// Clone copy token ( preserve Prev/Next reference ) +func (t *Token) Clone() *Token { + if t == nil { + return nil + } + copied := *t + if t.Position != nil { + pos := *(t.Position) + copied.Position = &pos + } + return &copied +} + +// Tokens type of token collection +type Tokens []*Token + +func (t *Tokens) add(tk *Token) { + tokens := *t + if len(tokens) == 0 { + tokens = append(tokens, tk) + } else { + last := tokens[len(tokens)-1] + last.Next = tk + tk.Prev = last + tokens = append(tokens, tk) + } + *t = tokens +} + +// Add append new some tokens +func (t *Tokens) Add(tks ...*Token) { + for _, tk := range tks { + t.add(tk) + } +} + +// Dump dump all token structures for debugging +func (t Tokens) Dump() { + for _, tk := range t { + fmt.Printf("- %+v\n", tk) + } +} + +// String create token for String +func String(value string, org string, pos *Position) *Token { + return &Token{ + Type: StringType, + CharacterType: CharacterTypeMiscellaneous, + Indicator: NotIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +// SequenceEntry create token for SequenceEntry +func SequenceEntry(org string, pos *Position) *Token { + return &Token{ + Type: SequenceEntryType, + CharacterType: CharacterTypeIndicator, + Indicator: BlockStructureIndicator, + Value: string(SequenceEntryCharacter), + Origin: org, + Position: pos, + } +} + +// MappingKey create token for MappingKey +func MappingKey(pos *Position) *Token { + return &Token{ + Type: MappingKeyType, + CharacterType: CharacterTypeIndicator, + Indicator: BlockStructureIndicator, + Value: string(MappingKeyCharacter), + Origin: string(MappingKeyCharacter), + Position: pos, + } +} + +// MappingValue create token for MappingValue +func MappingValue(pos *Position) *Token { + return &Token{ + Type: MappingValueType, + CharacterType: CharacterTypeIndicator, + Indicator: BlockStructureIndicator, + Value: string(MappingValueCharacter), + Origin: string(MappingValueCharacter), + Position: pos, + } +} + +// CollectEntry create token for CollectEntry +func CollectEntry(org string, pos *Position) *Token { + return &Token{ + Type: CollectEntryType, + CharacterType: CharacterTypeIndicator, + Indicator: FlowCollectionIndicator, + Value: string(CollectEntryCharacter), + Origin: org, + Position: pos, + } +} + +// SequenceStart create token for SequenceStart +func SequenceStart(org string, pos *Position) *Token { + return &Token{ + Type: SequenceStartType, + CharacterType: CharacterTypeIndicator, + Indicator: FlowCollectionIndicator, + Value: string(SequenceStartCharacter), + Origin: org, + Position: pos, + } +} + +// SequenceEnd create token for SequenceEnd +func SequenceEnd(org string, pos *Position) *Token { + return &Token{ + Type: SequenceEndType, + CharacterType: CharacterTypeIndicator, + Indicator: FlowCollectionIndicator, + Value: string(SequenceEndCharacter), + Origin: org, + Position: pos, + } +} + +// MappingStart create token for MappingStart +func MappingStart(org string, pos *Position) *Token { + return &Token{ + Type: MappingStartType, + CharacterType: CharacterTypeIndicator, + Indicator: FlowCollectionIndicator, + Value: string(MappingStartCharacter), + Origin: org, + Position: pos, + } +} + +// MappingEnd create token for MappingEnd +func MappingEnd(org string, pos *Position) *Token { + return &Token{ + Type: MappingEndType, + CharacterType: CharacterTypeIndicator, + Indicator: FlowCollectionIndicator, + Value: string(MappingEndCharacter), + Origin: org, + Position: pos, + } +} + +// Comment create token for Comment +func Comment(value string, org string, pos *Position) *Token { + return &Token{ + Type: CommentType, + CharacterType: CharacterTypeIndicator, + Indicator: CommentIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +// Anchor create token for Anchor +func Anchor(org string, pos *Position) *Token { + return &Token{ + Type: AnchorType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: string(AnchorCharacter), + Origin: org, + Position: pos, + } +} + +// Alias create token for Alias +func Alias(org string, pos *Position) *Token { + return &Token{ + Type: AliasType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: string(AliasCharacter), + Origin: org, + Position: pos, + } +} + +// Tag create token for Tag +func Tag(value string, org string, pos *Position) *Token { + fn := ReservedTagKeywordMap[ReservedTagKeyword(value)] + if fn != nil { + return fn(value, org, pos) + } + return &Token{ + Type: TagType, + CharacterType: CharacterTypeIndicator, + Indicator: NodePropertyIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +// Literal create token for Literal +func Literal(value string, org string, pos *Position) *Token { + return &Token{ + Type: LiteralType, + CharacterType: CharacterTypeIndicator, + Indicator: BlockScalarIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +// Folded create token for Folded +func Folded(value string, org string, pos *Position) *Token { + return &Token{ + Type: FoldedType, + CharacterType: CharacterTypeIndicator, + Indicator: BlockScalarIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +// SingleQuote create token for SingleQuote +func SingleQuote(value string, org string, pos *Position) *Token { + return &Token{ + Type: SingleQuoteType, + CharacterType: CharacterTypeIndicator, + Indicator: QuotedScalarIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +// DoubleQuote create token for DoubleQuote +func DoubleQuote(value string, org string, pos *Position) *Token { + return &Token{ + Type: DoubleQuoteType, + CharacterType: CharacterTypeIndicator, + Indicator: QuotedScalarIndicator, + Value: value, + Origin: org, + Position: pos, + } +} + +// Directive create token for Directive +func Directive(org string, pos *Position) *Token { + return &Token{ + Type: DirectiveType, + CharacterType: CharacterTypeIndicator, + Indicator: DirectiveIndicator, + Value: string(DirectiveCharacter), + Origin: org, + Position: pos, + } +} + +// Space create token for Space +func Space(pos *Position) *Token { + return &Token{ + Type: SpaceType, + CharacterType: CharacterTypeWhiteSpace, + Indicator: NotIndicator, + Value: string(SpaceCharacter), + Origin: string(SpaceCharacter), + Position: pos, + } +} + +// MergeKey create token for MergeKey +func MergeKey(org string, pos *Position) *Token { + return &Token{ + Type: MergeKeyType, + CharacterType: CharacterTypeMiscellaneous, + Indicator: NotIndicator, + Value: "<<", + Origin: org, + Position: pos, + } +} + +// DocumentHeader create token for DocumentHeader +func DocumentHeader(org string, pos *Position) *Token { + return &Token{ + Type: DocumentHeaderType, + CharacterType: CharacterTypeMiscellaneous, + Indicator: NotIndicator, + Value: "---", + Origin: org, + Position: pos, + } +} + +// DocumentEnd create token for DocumentEnd +func DocumentEnd(org string, pos *Position) *Token { + return &Token{ + Type: DocumentEndType, + CharacterType: CharacterTypeMiscellaneous, + Indicator: NotIndicator, + Value: "...", + Origin: org, + Position: pos, + } +} + +// DetectLineBreakCharacter detect line break character in only one inside scalar content scope. +func DetectLineBreakCharacter(src string) string { + nc := strings.Count(src, "\n") + rc := strings.Count(src, "\r") + rnc := strings.Count(src, "\r\n") + switch { + case nc == rnc && rc == rnc: + return "\r\n" + case rc > nc: + return "\r" + default: + return "\n" + } +} |