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author | Duco van Amstel <helcaraxan@gmail.com> | 2018-11-18 00:28:29 +0000 |
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committer | Duco van Amstel <helcaraxan@gmail.com> | 2018-11-18 01:10:15 +0000 |
commit | 692bb8faa7c4000953b0622a77126193f8fd0383 (patch) | |
tree | b0966b9aa86eb8d02d423221bed21893959de4eb /vendor/github.com/BurntSushi/toml/parse.go | |
parent | 455a0fc2394ea52955ed386663ded9a9dceab83f (diff) | |
download | matterbridge-msglm-692bb8faa7c4000953b0622a77126193f8fd0383.tar.gz matterbridge-msglm-692bb8faa7c4000953b0622a77126193f8fd0383.tar.bz2 matterbridge-msglm-692bb8faa7c4000953b0622a77126193f8fd0383.zip |
Upgrade logrus / testify to stable versions
Diffstat (limited to 'vendor/github.com/BurntSushi/toml/parse.go')
-rw-r--r-- | vendor/github.com/BurntSushi/toml/parse.go | 592 |
1 files changed, 0 insertions, 592 deletions
diff --git a/vendor/github.com/BurntSushi/toml/parse.go b/vendor/github.com/BurntSushi/toml/parse.go deleted file mode 100644 index 50869ef9..00000000 --- a/vendor/github.com/BurntSushi/toml/parse.go +++ /dev/null @@ -1,592 +0,0 @@ -package toml - -import ( - "fmt" - "strconv" - "strings" - "time" - "unicode" - "unicode/utf8" -) - -type parser struct { - mapping map[string]interface{} - types map[string]tomlType - lx *lexer - - // A list of keys in the order that they appear in the TOML data. - ordered []Key - - // the full key for the current hash in scope - context Key - - // the base key name for everything except hashes - currentKey string - - // rough approximation of line number - approxLine int - - // A map of 'key.group.names' to whether they were created implicitly. - implicits map[string]bool -} - -type parseError string - -func (pe parseError) Error() string { - return string(pe) -} - -func parse(data string) (p *parser, err error) { - defer func() { - if r := recover(); r != nil { - var ok bool - if err, ok = r.(parseError); ok { - return - } - panic(r) - } - }() - - p = &parser{ - mapping: make(map[string]interface{}), - types: make(map[string]tomlType), - lx: lex(data), - ordered: make([]Key, 0), - implicits: make(map[string]bool), - } - for { - item := p.next() - if item.typ == itemEOF { - break - } - p.topLevel(item) - } - - return p, nil -} - -func (p *parser) panicf(format string, v ...interface{}) { - msg := fmt.Sprintf("Near line %d (last key parsed '%s'): %s", - p.approxLine, p.current(), fmt.Sprintf(format, v...)) - panic(parseError(msg)) -} - -func (p *parser) next() item { - it := p.lx.nextItem() - if it.typ == itemError { - p.panicf("%s", it.val) - } - return it -} - -func (p *parser) bug(format string, v ...interface{}) { - panic(fmt.Sprintf("BUG: "+format+"\n\n", v...)) -} - -func (p *parser) expect(typ itemType) item { - it := p.next() - p.assertEqual(typ, it.typ) - return it -} - -func (p *parser) assertEqual(expected, got itemType) { - if expected != got { - p.bug("Expected '%s' but got '%s'.", expected, got) - } -} - -func (p *parser) topLevel(item item) { - switch item.typ { - case itemCommentStart: - p.approxLine = item.line - p.expect(itemText) - case itemTableStart: - kg := p.next() - p.approxLine = kg.line - - var key Key - for ; kg.typ != itemTableEnd && kg.typ != itemEOF; kg = p.next() { - key = append(key, p.keyString(kg)) - } - p.assertEqual(itemTableEnd, kg.typ) - - p.establishContext(key, false) - p.setType("", tomlHash) - p.ordered = append(p.ordered, key) - case itemArrayTableStart: - kg := p.next() - p.approxLine = kg.line - - var key Key - for ; kg.typ != itemArrayTableEnd && kg.typ != itemEOF; kg = p.next() { - key = append(key, p.keyString(kg)) - } - p.assertEqual(itemArrayTableEnd, kg.typ) - - p.establishContext(key, true) - p.setType("", tomlArrayHash) - p.ordered = append(p.ordered, key) - case itemKeyStart: - kname := p.next() - p.approxLine = kname.line - p.currentKey = p.keyString(kname) - - val, typ := p.value(p.next()) - p.setValue(p.currentKey, val) - p.setType(p.currentKey, typ) - p.ordered = append(p.ordered, p.context.add(p.currentKey)) - p.currentKey = "" - default: - p.bug("Unexpected type at top level: %s", item.typ) - } -} - -// Gets a string for a key (or part of a key in a table name). -func (p *parser) keyString(it item) string { - switch it.typ { - case itemText: - return it.val - case itemString, itemMultilineString, - itemRawString, itemRawMultilineString: - s, _ := p.value(it) - return s.(string) - default: - p.bug("Unexpected key type: %s", it.typ) - panic("unreachable") - } -} - -// value translates an expected value from the lexer into a Go value wrapped -// as an empty interface. -func (p *parser) value(it item) (interface{}, tomlType) { - switch it.typ { - case itemString: - return p.replaceEscapes(it.val), p.typeOfPrimitive(it) - case itemMultilineString: - trimmed := stripFirstNewline(stripEscapedWhitespace(it.val)) - return p.replaceEscapes(trimmed), p.typeOfPrimitive(it) - case itemRawString: - return it.val, p.typeOfPrimitive(it) - case itemRawMultilineString: - return stripFirstNewline(it.val), p.typeOfPrimitive(it) - case itemBool: - switch it.val { - case "true": - return true, p.typeOfPrimitive(it) - case "false": - return false, p.typeOfPrimitive(it) - } - p.bug("Expected boolean value, but got '%s'.", it.val) - case itemInteger: - if !numUnderscoresOK(it.val) { - p.panicf("Invalid integer %q: underscores must be surrounded by digits", - it.val) - } - val := strings.Replace(it.val, "_", "", -1) - num, err := strconv.ParseInt(val, 10, 64) - if err != nil { - // Distinguish integer values. Normally, it'd be a bug if the lexer - // provides an invalid integer, but it's possible that the number is - // out of range of valid values (which the lexer cannot determine). - // So mark the former as a bug but the latter as a legitimate user - // error. - if e, ok := err.(*strconv.NumError); ok && - e.Err == strconv.ErrRange { - - p.panicf("Integer '%s' is out of the range of 64-bit "+ - "signed integers.", it.val) - } else { - p.bug("Expected integer value, but got '%s'.", it.val) - } - } - return num, p.typeOfPrimitive(it) - case itemFloat: - parts := strings.FieldsFunc(it.val, func(r rune) bool { - switch r { - case '.', 'e', 'E': - return true - } - return false - }) - for _, part := range parts { - if !numUnderscoresOK(part) { - p.panicf("Invalid float %q: underscores must be "+ - "surrounded by digits", it.val) - } - } - if !numPeriodsOK(it.val) { - // As a special case, numbers like '123.' or '1.e2', - // which are valid as far as Go/strconv are concerned, - // must be rejected because TOML says that a fractional - // part consists of '.' followed by 1+ digits. - p.panicf("Invalid float %q: '.' must be followed "+ - "by one or more digits", it.val) - } - val := strings.Replace(it.val, "_", "", -1) - num, err := strconv.ParseFloat(val, 64) - if err != nil { - if e, ok := err.(*strconv.NumError); ok && - e.Err == strconv.ErrRange { - - p.panicf("Float '%s' is out of the range of 64-bit "+ - "IEEE-754 floating-point numbers.", it.val) - } else { - p.panicf("Invalid float value: %q", it.val) - } - } - return num, p.typeOfPrimitive(it) - case itemDatetime: - var t time.Time - var ok bool - var err error - for _, format := range []string{ - "2006-01-02T15:04:05Z07:00", - "2006-01-02T15:04:05", - "2006-01-02", - } { - t, err = time.ParseInLocation(format, it.val, time.Local) - if err == nil { - ok = true - break - } - } - if !ok { - p.panicf("Invalid TOML Datetime: %q.", it.val) - } - return t, p.typeOfPrimitive(it) - case itemArray: - array := make([]interface{}, 0) - types := make([]tomlType, 0) - - for it = p.next(); it.typ != itemArrayEnd; it = p.next() { - if it.typ == itemCommentStart { - p.expect(itemText) - continue - } - - val, typ := p.value(it) - array = append(array, val) - types = append(types, typ) - } - return array, p.typeOfArray(types) - case itemInlineTableStart: - var ( - hash = make(map[string]interface{}) - outerContext = p.context - outerKey = p.currentKey - ) - - p.context = append(p.context, p.currentKey) - p.currentKey = "" - for it := p.next(); it.typ != itemInlineTableEnd; it = p.next() { - if it.typ != itemKeyStart { - p.bug("Expected key start but instead found %q, around line %d", - it.val, p.approxLine) - } - if it.typ == itemCommentStart { - p.expect(itemText) - continue - } - - // retrieve key - k := p.next() - p.approxLine = k.line - kname := p.keyString(k) - - // retrieve value - p.currentKey = kname - val, typ := p.value(p.next()) - // make sure we keep metadata up to date - p.setType(kname, typ) - p.ordered = append(p.ordered, p.context.add(p.currentKey)) - hash[kname] = val - } - p.context = outerContext - p.currentKey = outerKey - return hash, tomlHash - } - p.bug("Unexpected value type: %s", it.typ) - panic("unreachable") -} - -// numUnderscoresOK checks whether each underscore in s is surrounded by -// characters that are not underscores. -func numUnderscoresOK(s string) bool { - accept := false - for _, r := range s { - if r == '_' { - if !accept { - return false - } - accept = false - continue - } - accept = true - } - return accept -} - -// numPeriodsOK checks whether every period in s is followed by a digit. -func numPeriodsOK(s string) bool { - period := false - for _, r := range s { - if period && !isDigit(r) { - return false - } - period = r == '.' - } - return !period -} - -// establishContext sets the current context of the parser, -// where the context is either a hash or an array of hashes. Which one is -// set depends on the value of the `array` parameter. -// -// Establishing the context also makes sure that the key isn't a duplicate, and -// will create implicit hashes automatically. -func (p *parser) establishContext(key Key, array bool) { - var ok bool - - // Always start at the top level and drill down for our context. - hashContext := p.mapping - keyContext := make(Key, 0) - - // We only need implicit hashes for key[0:-1] - for _, k := range key[0 : len(key)-1] { - _, ok = hashContext[k] - keyContext = append(keyContext, k) - - // No key? Make an implicit hash and move on. - if !ok { - p.addImplicit(keyContext) - hashContext[k] = make(map[string]interface{}) - } - - // If the hash context is actually an array of tables, then set - // the hash context to the last element in that array. - // - // Otherwise, it better be a table, since this MUST be a key group (by - // virtue of it not being the last element in a key). - switch t := hashContext[k].(type) { - case []map[string]interface{}: - hashContext = t[len(t)-1] - case map[string]interface{}: - hashContext = t - default: - p.panicf("Key '%s' was already created as a hash.", keyContext) - } - } - - p.context = keyContext - if array { - // If this is the first element for this array, then allocate a new - // list of tables for it. - k := key[len(key)-1] - if _, ok := hashContext[k]; !ok { - hashContext[k] = make([]map[string]interface{}, 0, 5) - } - - // Add a new table. But make sure the key hasn't already been used - // for something else. - if hash, ok := hashContext[k].([]map[string]interface{}); ok { - hashContext[k] = append(hash, make(map[string]interface{})) - } else { - p.panicf("Key '%s' was already created and cannot be used as "+ - "an array.", keyContext) - } - } else { - p.setValue(key[len(key)-1], make(map[string]interface{})) - } - p.context = append(p.context, key[len(key)-1]) -} - -// setValue sets the given key to the given value in the current context. -// It will make sure that the key hasn't already been defined, account for -// implicit key groups. -func (p *parser) setValue(key string, value interface{}) { - var tmpHash interface{} - var ok bool - - hash := p.mapping - keyContext := make(Key, 0) - for _, k := range p.context { - keyContext = append(keyContext, k) - if tmpHash, ok = hash[k]; !ok { - p.bug("Context for key '%s' has not been established.", keyContext) - } - switch t := tmpHash.(type) { - case []map[string]interface{}: - // The context is a table of hashes. Pick the most recent table - // defined as the current hash. - hash = t[len(t)-1] - case map[string]interface{}: - hash = t - default: - p.bug("Expected hash to have type 'map[string]interface{}', but "+ - "it has '%T' instead.", tmpHash) - } - } - keyContext = append(keyContext, key) - - if _, ok := hash[key]; ok { - // Typically, if the given key has already been set, then we have - // to raise an error since duplicate keys are disallowed. However, - // it's possible that a key was previously defined implicitly. In this - // case, it is allowed to be redefined concretely. (See the - // `tests/valid/implicit-and-explicit-after.toml` test in `toml-test`.) - // - // But we have to make sure to stop marking it as an implicit. (So that - // another redefinition provokes an error.) - // - // Note that since it has already been defined (as a hash), we don't - // want to overwrite it. So our business is done. - if p.isImplicit(keyContext) { - p.removeImplicit(keyContext) - return - } - - // Otherwise, we have a concrete key trying to override a previous - // key, which is *always* wrong. - p.panicf("Key '%s' has already been defined.", keyContext) - } - hash[key] = value -} - -// setType sets the type of a particular value at a given key. -// It should be called immediately AFTER setValue. -// -// Note that if `key` is empty, then the type given will be applied to the -// current context (which is either a table or an array of tables). -func (p *parser) setType(key string, typ tomlType) { - keyContext := make(Key, 0, len(p.context)+1) - for _, k := range p.context { - keyContext = append(keyContext, k) - } - if len(key) > 0 { // allow type setting for hashes - keyContext = append(keyContext, key) - } - p.types[keyContext.String()] = typ -} - -// addImplicit sets the given Key as having been created implicitly. -func (p *parser) addImplicit(key Key) { - p.implicits[key.String()] = true -} - -// removeImplicit stops tagging the given key as having been implicitly -// created. -func (p *parser) removeImplicit(key Key) { - p.implicits[key.String()] = false -} - -// isImplicit returns true if the key group pointed to by the key was created -// implicitly. -func (p *parser) isImplicit(key Key) bool { - return p.implicits[key.String()] -} - -// current returns the full key name of the current context. -func (p *parser) current() string { - if len(p.currentKey) == 0 { - return p.context.String() - } - if len(p.context) == 0 { - return p.currentKey - } - return fmt.Sprintf("%s.%s", p.context, p.currentKey) -} - -func stripFirstNewline(s string) string { - if len(s) == 0 || s[0] != '\n' { - return s - } - return s[1:] -} - -func stripEscapedWhitespace(s string) string { - esc := strings.Split(s, "\\\n") - if len(esc) > 1 { - for i := 1; i < len(esc); i++ { - esc[i] = strings.TrimLeftFunc(esc[i], unicode.IsSpace) - } - } - return strings.Join(esc, "") -} - -func (p *parser) replaceEscapes(str string) string { - var replaced []rune - s := []byte(str) - r := 0 - for r < len(s) { - if s[r] != '\\' { - c, size := utf8.DecodeRune(s[r:]) - r += size - replaced = append(replaced, c) - continue - } - r += 1 - if r >= len(s) { - p.bug("Escape sequence at end of string.") - return "" - } - switch s[r] { - default: - p.bug("Expected valid escape code after \\, but got %q.", s[r]) - return "" - case 'b': - replaced = append(replaced, rune(0x0008)) - r += 1 - case 't': - replaced = append(replaced, rune(0x0009)) - r += 1 - case 'n': - replaced = append(replaced, rune(0x000A)) - r += 1 - case 'f': - replaced = append(replaced, rune(0x000C)) - r += 1 - case 'r': - replaced = append(replaced, rune(0x000D)) - r += 1 - case '"': - replaced = append(replaced, rune(0x0022)) - r += 1 - case '\\': - replaced = append(replaced, rune(0x005C)) - r += 1 - case 'u': - // At this point, we know we have a Unicode escape of the form - // `uXXXX` at [r, r+5). (Because the lexer guarantees this - // for us.) - escaped := p.asciiEscapeToUnicode(s[r+1 : r+5]) - replaced = append(replaced, escaped) - r += 5 - case 'U': - // At this point, we know we have a Unicode escape of the form - // `uXXXX` at [r, r+9). (Because the lexer guarantees this - // for us.) - escaped := p.asciiEscapeToUnicode(s[r+1 : r+9]) - replaced = append(replaced, escaped) - r += 9 - } - } - return string(replaced) -} - -func (p *parser) asciiEscapeToUnicode(bs []byte) rune { - s := string(bs) - hex, err := strconv.ParseUint(strings.ToLower(s), 16, 32) - if err != nil { - p.bug("Could not parse '%s' as a hexadecimal number, but the "+ - "lexer claims it's OK: %s", s, err) - } - if !utf8.ValidRune(rune(hex)) { - p.panicf("Escaped character '\\u%s' is not valid UTF-8.", s) - } - return rune(hex) -} - -func isStringType(ty itemType) bool { - return ty == itemString || ty == itemMultilineString || - ty == itemRawString || ty == itemRawMultilineString -} |