Switch to modules

1 files changed, 0 insertions, 750 deletions

diff --git a/vendor/github.com/pelletier/go-toml/lexer.go b/vendor/github.com/pelletier/go-toml/lexer.go
deleted file mode 100644
index d11de42..0000000
--- a/vendor/github.com/pelletier/go-toml/lexer.go
+++ /dev/null
@@ -1,750 +0,0 @@
-// TOML lexer.
-//
-// Written using the principles developed by Rob Pike in
-// http://www.youtube.com/watch?v=HxaD_trXwRE
-
-package toml
-
-import (
-	"bytes"
-	"errors"
-	"fmt"
-	"regexp"
-	"strconv"
-	"strings"
-)
-
-var dateRegexp *regexp.Regexp
-
-// Define state functions
-type tomlLexStateFn func() tomlLexStateFn
-
-// Define lexer
-type tomlLexer struct {
-	inputIdx          int
-	input             []rune // Textual source
-	currentTokenStart int
-	currentTokenStop  int
-	tokens            []token
-	depth             int
-	line              int
-	col               int
-	endbufferLine     int
-	endbufferCol      int
-}
-
-// Basic read operations on input
-
-func (l *tomlLexer) read() rune {
-	r := l.peek()
-	if r == '\n' {
-		l.endbufferLine++
-		l.endbufferCol = 1
-	} else {
-		l.endbufferCol++
-	}
-	l.inputIdx++
-	return r
-}
-
-func (l *tomlLexer) next() rune {
-	r := l.read()
-
-	if r != eof {
-		l.currentTokenStop++
-	}
-	return r
-}
-
-func (l *tomlLexer) ignore() {
-	l.currentTokenStart = l.currentTokenStop
-	l.line = l.endbufferLine
-	l.col = l.endbufferCol
-}
-
-func (l *tomlLexer) skip() {
-	l.next()
-	l.ignore()
-}
-
-func (l *tomlLexer) fastForward(n int) {
-	for i := 0; i < n; i++ {
-		l.next()
-	}
-}
-
-func (l *tomlLexer) emitWithValue(t tokenType, value string) {
-	l.tokens = append(l.tokens, token{
-		Position: Position{l.line, l.col},
-		typ:      t,
-		val:      value,
-	})
-	l.ignore()
-}
-
-func (l *tomlLexer) emit(t tokenType) {
-	l.emitWithValue(t, string(l.input[l.currentTokenStart:l.currentTokenStop]))
-}
-
-func (l *tomlLexer) peek() rune {
-	if l.inputIdx >= len(l.input) {
-		return eof
-	}
-	return l.input[l.inputIdx]
-}
-
-func (l *tomlLexer) peekString(size int) string {
-	maxIdx := len(l.input)
-	upperIdx := l.inputIdx + size // FIXME: potential overflow
-	if upperIdx > maxIdx {
-		upperIdx = maxIdx
-	}
-	return string(l.input[l.inputIdx:upperIdx])
-}
-
-func (l *tomlLexer) follow(next string) bool {
-	return next == l.peekString(len(next))
-}
-
-// Error management
-
-func (l *tomlLexer) errorf(format string, args ...interface{}) tomlLexStateFn {
-	l.tokens = append(l.tokens, token{
-		Position: Position{l.line, l.col},
-		typ:      tokenError,
-		val:      fmt.Sprintf(format, args...),
-	})
-	return nil
-}
-
-// State functions
-
-func (l *tomlLexer) lexVoid() tomlLexStateFn {
-	for {
-		next := l.peek()
-		switch next {
-		case '[':
-			return l.lexTableKey
-		case '#':
-			return l.lexComment(l.lexVoid)
-		case '=':
-			return l.lexEqual
-		case '\r':
-			fallthrough
-		case '\n':
-			l.skip()
-			continue
-		}
-
-		if isSpace(next) {
-			l.skip()
-		}
-
-		if l.depth > 0 {
-			return l.lexRvalue
-		}
-
-		if isKeyStartChar(next) {
-			return l.lexKey
-		}
-
-		if next == eof {
-			l.next()
-			break
-		}
-	}
-
-	l.emit(tokenEOF)
-	return nil
-}
-
-func (l *tomlLexer) lexRvalue() tomlLexStateFn {
-	for {
-		next := l.peek()
-		switch next {
-		case '.':
-			return l.errorf("cannot start float with a dot")
-		case '=':
-			return l.lexEqual
-		case '[':
-			l.depth++
-			return l.lexLeftBracket
-		case ']':
-			l.depth--
-			return l.lexRightBracket
-		case '{':
-			return l.lexLeftCurlyBrace
-		case '}':
-			return l.lexRightCurlyBrace
-		case '#':
-			return l.lexComment(l.lexRvalue)
-		case '"':
-			return l.lexString
-		case '\'':
-			return l.lexLiteralString
-		case ',':
-			return l.lexComma
-		case '\r':
-			fallthrough
-		case '\n':
-			l.skip()
-			if l.depth == 0 {
-				return l.lexVoid
-			}
-			return l.lexRvalue
-		case '_':
-			return l.errorf("cannot start number with underscore")
-		}
-
-		if l.follow("true") {
-			return l.lexTrue
-		}
-
-		if l.follow("false") {
-			return l.lexFalse
-		}
-
-		if l.follow("inf") {
-			return l.lexInf
-		}
-
-		if l.follow("nan") {
-			return l.lexNan
-		}
-
-		if isSpace(next) {
-			l.skip()
-			continue
-		}
-
-		if next == eof {
-			l.next()
-			break
-		}
-
-		possibleDate := l.peekString(35)
-		dateMatch := dateRegexp.FindString(possibleDate)
-		if dateMatch != "" {
-			l.fastForward(len(dateMatch))
-			return l.lexDate
-		}
-
-		if next == '+' || next == '-' || isDigit(next) {
-			return l.lexNumber
-		}
-
-		if isAlphanumeric(next) {
-			return l.lexKey
-		}
-
-		return l.errorf("no value can start with %c", next)
-	}
-
-	l.emit(tokenEOF)
-	return nil
-}
-
-func (l *tomlLexer) lexLeftCurlyBrace() tomlLexStateFn {
-	l.next()
-	l.emit(tokenLeftCurlyBrace)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexRightCurlyBrace() tomlLexStateFn {
-	l.next()
-	l.emit(tokenRightCurlyBrace)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexDate() tomlLexStateFn {
-	l.emit(tokenDate)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexTrue() tomlLexStateFn {
-	l.fastForward(4)
-	l.emit(tokenTrue)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexFalse() tomlLexStateFn {
-	l.fastForward(5)
-	l.emit(tokenFalse)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexInf() tomlLexStateFn {
-	l.fastForward(3)
-	l.emit(tokenInf)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexNan() tomlLexStateFn {
-	l.fastForward(3)
-	l.emit(tokenNan)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexEqual() tomlLexStateFn {
-	l.next()
-	l.emit(tokenEqual)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexComma() tomlLexStateFn {
-	l.next()
-	l.emit(tokenComma)
-	return l.lexRvalue
-}
-
-// Parse the key and emits its value without escape sequences.
-// bare keys, basic string keys and literal string keys are supported.
-func (l *tomlLexer) lexKey() tomlLexStateFn {
-	growingString := ""
-
-	for r := l.peek(); isKeyChar(r) || r == '\n' || r == '\r'; r = l.peek() {
-		if r == '"' {
-			l.next()
-			str, err := l.lexStringAsString(`"`, false, true)
-			if err != nil {
-				return l.errorf(err.Error())
-			}
-			growingString += str
-			l.next()
-			continue
-		} else if r == '\'' {
-			l.next()
-			str, err := l.lexLiteralStringAsString(`'`, false)
-			if err != nil {
-				return l.errorf(err.Error())
-			}
-			growingString += str
-			l.next()
-			continue
-		} else if r == '\n' {
-			return l.errorf("keys cannot contain new lines")
-		} else if isSpace(r) {
-			break
-		} else if !isValidBareChar(r) {
-			return l.errorf("keys cannot contain %c character", r)
-		}
-		growingString += string(r)
-		l.next()
-	}
-	l.emitWithValue(tokenKey, growingString)
-	return l.lexVoid
-}
-
-func (l *tomlLexer) lexComment(previousState tomlLexStateFn) tomlLexStateFn {
-	return func() tomlLexStateFn {
-		for next := l.peek(); next != '\n' && next != eof; next = l.peek() {
-			if next == '\r' && l.follow("\r\n") {
-				break
-			}
-			l.next()
-		}
-		l.ignore()
-		return previousState
-	}
-}
-
-func (l *tomlLexer) lexLeftBracket() tomlLexStateFn {
-	l.next()
-	l.emit(tokenLeftBracket)
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexLiteralStringAsString(terminator string, discardLeadingNewLine bool) (string, error) {
-	growingString := ""
-
-	if discardLeadingNewLine {
-		if l.follow("\r\n") {
-			l.skip()
-			l.skip()
-		} else if l.peek() == '\n' {
-			l.skip()
-		}
-	}
-
-	// find end of string
-	for {
-		if l.follow(terminator) {
-			return growingString, nil
-		}
-
-		next := l.peek()
-		if next == eof {
-			break
-		}
-		growingString += string(l.next())
-	}
-
-	return "", errors.New("unclosed string")
-}
-
-func (l *tomlLexer) lexLiteralString() tomlLexStateFn {
-	l.skip()
-
-	// handle special case for triple-quote
-	terminator := "'"
-	discardLeadingNewLine := false
-	if l.follow("''") {
-		l.skip()
-		l.skip()
-		terminator = "'''"
-		discardLeadingNewLine = true
-	}
-
-	str, err := l.lexLiteralStringAsString(terminator, discardLeadingNewLine)
-	if err != nil {
-		return l.errorf(err.Error())
-	}
-
-	l.emitWithValue(tokenString, str)
-	l.fastForward(len(terminator))
-	l.ignore()
-	return l.lexRvalue
-}
-
-// Lex a string and return the results as a string.
-// Terminator is the substring indicating the end of the token.
-// The resulting string does not include the terminator.
-func (l *tomlLexer) lexStringAsString(terminator string, discardLeadingNewLine, acceptNewLines bool) (string, error) {
-	growingString := ""
-
-	if discardLeadingNewLine {
-		if l.follow("\r\n") {
-			l.skip()
-			l.skip()
-		} else if l.peek() == '\n' {
-			l.skip()
-		}
-	}
-
-	for {
-		if l.follow(terminator) {
-			return growingString, nil
-		}
-
-		if l.follow("\\") {
-			l.next()
-			switch l.peek() {
-			case '\r':
-				fallthrough
-			case '\n':
-				fallthrough
-			case '\t':
-				fallthrough
-			case ' ':
-				// skip all whitespace chars following backslash
-				for strings.ContainsRune("\r\n\t ", l.peek()) {
-					l.next()
-				}
-			case '"':
-				growingString += "\""
-				l.next()
-			case 'n':
-				growingString += "\n"
-				l.next()
-			case 'b':
-				growingString += "\b"
-				l.next()
-			case 'f':
-				growingString += "\f"
-				l.next()
-			case '/':
-				growingString += "/"
-				l.next()
-			case 't':
-				growingString += "\t"
-				l.next()
-			case 'r':
-				growingString += "\r"
-				l.next()
-			case '\\':
-				growingString += "\\"
-				l.next()
-			case 'u':
-				l.next()
-				code := ""
-				for i := 0; i < 4; i++ {
-					c := l.peek()
-					if !isHexDigit(c) {
-						return "", errors.New("unfinished unicode escape")
-					}
-					l.next()
-					code = code + string(c)
-				}
-				intcode, err := strconv.ParseInt(code, 16, 32)
-				if err != nil {
-					return "", errors.New("invalid unicode escape: \\u" + code)
-				}
-				growingString += string(rune(intcode))
-			case 'U':
-				l.next()
-				code := ""
-				for i := 0; i < 8; i++ {
-					c := l.peek()
-					if !isHexDigit(c) {
-						return "", errors.New("unfinished unicode escape")
-					}
-					l.next()
-					code = code + string(c)
-				}
-				intcode, err := strconv.ParseInt(code, 16, 64)
-				if err != nil {
-					return "", errors.New("invalid unicode escape: \\U" + code)
-				}
-				growingString += string(rune(intcode))
-			default:
-				return "", errors.New("invalid escape sequence: \\" + string(l.peek()))
-			}
-		} else {
-			r := l.peek()
-
-			if 0x00 <= r && r <= 0x1F && !(acceptNewLines && (r == '\n' || r == '\r')) {
-				return "", fmt.Errorf("unescaped control character %U", r)
-			}
-			l.next()
-			growingString += string(r)
-		}
-
-		if l.peek() == eof {
-			break
-		}
-	}
-
-	return "", errors.New("unclosed string")
-}
-
-func (l *tomlLexer) lexString() tomlLexStateFn {
-	l.skip()
-
-	// handle special case for triple-quote
-	terminator := `"`
-	discardLeadingNewLine := false
-	acceptNewLines := false
-	if l.follow(`""`) {
-		l.skip()
-		l.skip()
-		terminator = `"""`
-		discardLeadingNewLine = true
-		acceptNewLines = true
-	}
-
-	str, err := l.lexStringAsString(terminator, discardLeadingNewLine, acceptNewLines)
-
-	if err != nil {
-		return l.errorf(err.Error())
-	}
-
-	l.emitWithValue(tokenString, str)
-	l.fastForward(len(terminator))
-	l.ignore()
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) lexTableKey() tomlLexStateFn {
-	l.next()
-
-	if l.peek() == '[' {
-		// token '[[' signifies an array of tables
-		l.next()
-		l.emit(tokenDoubleLeftBracket)
-		return l.lexInsideTableArrayKey
-	}
-	// vanilla table key
-	l.emit(tokenLeftBracket)
-	return l.lexInsideTableKey
-}
-
-// Parse the key till "]]", but only bare keys are supported
-func (l *tomlLexer) lexInsideTableArrayKey() tomlLexStateFn {
-	for r := l.peek(); r != eof; r = l.peek() {
-		switch r {
-		case ']':
-			if l.currentTokenStop > l.currentTokenStart {
-				l.emit(tokenKeyGroupArray)
-			}
-			l.next()
-			if l.peek() != ']' {
-				break
-			}
-			l.next()
-			l.emit(tokenDoubleRightBracket)
-			return l.lexVoid
-		case '[':
-			return l.errorf("table array key cannot contain ']'")
-		default:
-			l.next()
-		}
-	}
-	return l.errorf("unclosed table array key")
-}
-
-// Parse the key till "]" but only bare keys are supported
-func (l *tomlLexer) lexInsideTableKey() tomlLexStateFn {
-	for r := l.peek(); r != eof; r = l.peek() {
-		switch r {
-		case ']':
-			if l.currentTokenStop > l.currentTokenStart {
-				l.emit(tokenKeyGroup)
-			}
-			l.next()
-			l.emit(tokenRightBracket)
-			return l.lexVoid
-		case '[':
-			return l.errorf("table key cannot contain ']'")
-		default:
-			l.next()
-		}
-	}
-	return l.errorf("unclosed table key")
-}
-
-func (l *tomlLexer) lexRightBracket() tomlLexStateFn {
-	l.next()
-	l.emit(tokenRightBracket)
-	return l.lexRvalue
-}
-
-type validRuneFn func(r rune) bool
-
-func isValidHexRune(r rune) bool {
-	return r >= 'a' && r <= 'f' ||
-		r >= 'A' && r <= 'F' ||
-		r >= '0' && r <= '9' ||
-		r == '_'
-}
-
-func isValidOctalRune(r rune) bool {
-	return r >= '0' && r <= '7' || r == '_'
-}
-
-func isValidBinaryRune(r rune) bool {
-	return r == '0' || r == '1' || r == '_'
-}
-
-func (l *tomlLexer) lexNumber() tomlLexStateFn {
-	r := l.peek()
-
-	if r == '0' {
-		follow := l.peekString(2)
-		if len(follow) == 2 {
-			var isValidRune validRuneFn
-			switch follow[1] {
-			case 'x':
-				isValidRune = isValidHexRune
-			case 'o':
-				isValidRune = isValidOctalRune
-			case 'b':
-				isValidRune = isValidBinaryRune
-			default:
-				if follow[1] >= 'a' && follow[1] <= 'z' || follow[1] >= 'A' && follow[1] <= 'Z' {
-					return l.errorf("unknown number base: %s. possible options are x (hex) o (octal) b (binary)", string(follow[1]))
-				}
-			}
-
-			if isValidRune != nil {
-				l.next()
-				l.next()
-				digitSeen := false
-				for {
-					next := l.peek()
-					if !isValidRune(next) {
-						break
-					}
-					digitSeen = true
-					l.next()
-				}
-
-				if !digitSeen {
-					return l.errorf("number needs at least one digit")
-				}
-
-				l.emit(tokenInteger)
-
-				return l.lexRvalue
-			}
-		}
-	}
-
-	if r == '+' || r == '-' {
-		l.next()
-		if l.follow("inf") {
-			return l.lexInf
-		}
-		if l.follow("nan") {
-			return l.lexNan
-		}
-	}
-
-	pointSeen := false
-	expSeen := false
-	digitSeen := false
-	for {
-		next := l.peek()
-		if next == '.' {
-			if pointSeen {
-				return l.errorf("cannot have two dots in one float")
-			}
-			l.next()
-			if !isDigit(l.peek()) {
-				return l.errorf("float cannot end with a dot")
-			}
-			pointSeen = true
-		} else if next == 'e' || next == 'E' {
-			expSeen = true
-			l.next()
-			r := l.peek()
-			if r == '+' || r == '-' {
-				l.next()
-			}
-		} else if isDigit(next) {
-			digitSeen = true
-			l.next()
-		} else if next == '_' {
-			l.next()
-		} else {
-			break
-		}
-		if pointSeen && !digitSeen {
-			return l.errorf("cannot start float with a dot")
-		}
-	}
-
-	if !digitSeen {
-		return l.errorf("no digit in that number")
-	}
-	if pointSeen || expSeen {
-		l.emit(tokenFloat)
-	} else {
-		l.emit(tokenInteger)
-	}
-	return l.lexRvalue
-}
-
-func (l *tomlLexer) run() {
-	for state := l.lexVoid; state != nil; {
-		state = state()
-	}
-}
-
-func init() {
-	dateRegexp = regexp.MustCompile(`^\d{1,4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}(\.\d{1,9})?(Z|[+-]\d{2}:\d{2})`)
-}
-
-// Entry point
-func lexToml(inputBytes []byte) []token {
-	runes := bytes.Runes(inputBytes)
-	l := &tomlLexer{
-		input:         runes,
-		tokens:        make([]token, 0, 256),
-		line:          1,
-		col:           1,
-		endbufferLine: 1,
-		endbufferCol:  1,
-	}
-	l.run()
-	return l.tokens
-}