prometheus/pkg/textparse/lex.l.go

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// Code generated by golex. DO NOT EDIT.
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// Copyright 2017 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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package textparse
import (
"fmt"
"math"
"strconv"
"unicode/utf8"
"github.com/prometheus/prometheus/pkg/value"
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)
const (
lstateInit = iota
lstateName
lstateValue
lstateTimestamp
lstateLabels
lstateLName
lstateLValue
lstateLValueIn
)
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// Lex is called by the parser generated by "go tool yacc" to obtain each
// token. The method is opened before the matching rules block and closed at
// the end of the file.
func (l *lexer) Lex() int {
l.state = lstateInit
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if l.i >= len(l.b) {
return eof
}
c := l.b[l.i]
l.ts = nil
l.mstart = l.nextMstart
l.offsets = l.offsets[:0]
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yystate0:
switch yyt := l.state; yyt {
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default:
panic(fmt.Errorf(`invalid start condition %d`, yyt))
case 0: // start condition: INITIAL
goto yystart1
case 1: // start condition: lstateName
goto yystart7
case 2: // start condition: lstateValue
goto yystart10
case 3: // start condition: lstateTimestamp
goto yystart16
case 4: // start condition: lstateLabels
goto yystart21
case 5: // start condition: lstateLName
goto yystart26
case 6: // start condition: lstateLValue
goto yystart30
case 7: // start condition: lstateLValueIn
goto yystart33
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}
goto yystate0 // silence unused label error
goto yystate1 // silence unused label error
yystate1:
c = l.next()
yystart1:
switch {
default:
goto yyabort
case c == '#':
goto yystate4
case c == ':' || c >= 'A' && c <= 'Z' || c == '_' || c >= 'a' && c <= 'z':
goto yystate6
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case c == '\t' || c == '\n' || c == '\r' || c == ' ':
goto yystate3
case c == '\x00':
goto yystate2
}
yystate2:
c = l.next()
goto yyrule1
yystate3:
c = l.next()
switch {
default:
goto yyrule3
case c == '\t' || c == '\n' || c == '\r' || c == ' ':
goto yystate3
}
yystate4:
c = l.next()
switch {
default:
goto yyabort
case c == '\n':
goto yystate5
case c >= '\x01' && c <= '\t' || c == '\v' || c == '\f' || c >= '\x0e' && c <= 'ÿ':
goto yystate4
}
yystate5:
c = l.next()
goto yyrule2
yystate6:
c = l.next()
switch {
default:
goto yyrule4
case c >= '0' && c <= ':' || c >= 'A' && c <= 'Z' || c == '_' || c >= 'a' && c <= 'z':
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goto yystate6
}
goto yystate7 // silence unused label error
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yystate7:
c = l.next()
yystart7:
switch {
default:
goto yyabort
case c == '\t' || c == ' ':
goto yystate8
case c == '{':
goto yystate9
}
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yystate8:
c = l.next()
switch {
default:
goto yyrule6
case c == '\t' || c == ' ':
goto yystate8
case c == '{':
goto yystate9
}
yystate9:
c = l.next()
goto yyrule5
goto yystate10 // silence unused label error
yystate10:
c = l.next()
yystart10:
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switch {
default:
goto yyabort
case c == 'N':
goto yystate13
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case c == '\t' || c == ' ':
goto yystate12
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case c >= '\x01' && c <= '\b' || c == '\v' || c == '\f' || c >= '\x0e' && c <= '\x1f' || c >= '!' && c <= 'M' || c >= 'O' && c <= 'ÿ':
goto yystate11
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}
yystate11:
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c = l.next()
switch {
default:
goto yyrule17
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case c >= '\x01' && c <= '\b' || c == '\v' || c == '\f' || c >= '\x0e' && c <= '\x1f' || c >= '!' && c <= 'ÿ':
goto yystate11
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}
yystate12:
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c = l.next()
switch {
default:
goto yyrule15
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case c == '\t' || c == ' ':
goto yystate12
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}
yystate13:
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c = l.next()
switch {
default:
goto yyrule17
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case c == 'a':
goto yystate14
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case c >= '\x01' && c <= '\b' || c == '\v' || c == '\f' || c >= '\x0e' && c <= '\x1f' || c >= '!' && c <= '`' || c >= 'b' && c <= 'ÿ':
goto yystate11
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}
yystate14:
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c = l.next()
switch {
default:
goto yyrule17
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case c == 'N':
goto yystate15
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case c >= '\x01' && c <= '\b' || c == '\v' || c == '\f' || c >= '\x0e' && c <= '\x1f' || c >= '!' && c <= 'M' || c >= 'O' && c <= 'ÿ':
goto yystate11
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}
yystate15:
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c = l.next()
switch {
default:
goto yyrule16
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case c >= '\x01' && c <= '\b' || c == '\v' || c == '\f' || c >= '\x0e' && c <= '\x1f' || c >= '!' && c <= 'ÿ':
goto yystate11
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}
goto yystate16 // silence unused label error
yystate16:
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c = l.next()
yystart16:
switch {
default:
goto yyabort
case c == '\n' || c == '\r':
goto yystate19
case c == '\t' || c == ' ':
goto yystate18
case c == '\x00':
goto yystate17
case c >= '0' && c <= '9':
goto yystate20
}
yystate17:
c = l.next()
goto yyrule21
yystate18:
c = l.next()
switch {
default:
goto yyrule18
case c == '\t' || c == ' ':
goto yystate18
}
yystate19:
c = l.next()
switch {
default:
goto yyrule20
case c == '\n' || c == '\r':
goto yystate19
}
yystate20:
c = l.next()
switch {
default:
goto yyrule19
case c >= '0' && c <= '9':
goto yystate20
}
goto yystate21 // silence unused label error
yystate21:
c = l.next()
yystart21:
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switch {
default:
goto yyrule9
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case c == ',':
goto yystate23
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case c == '\t' || c == ' ':
goto yystate22
case c == '}':
goto yystate25
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}
yystate22:
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c = l.next()
switch {
default:
goto yyrule7
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case c == '\t' || c == ' ':
goto yystate22
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}
yystate23:
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c = l.next()
switch {
default:
goto yyrule9
case c == '\t' || c == ' ':
goto yystate24
case c == '}':
goto yystate25
}
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yystate24:
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c = l.next()
switch {
default:
goto yyrule9
case c == '\t' || c == ' ':
goto yystate24
}
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yystate25:
c = l.next()
goto yyrule8
goto yystate26 // silence unused label error
yystate26:
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c = l.next()
yystart26:
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switch {
default:
goto yyabort
case c == '=':
goto yystate28
case c == '\t' || c == ' ':
goto yystate27
case c >= 'A' && c <= 'Z' || c == '_' || c >= 'a' && c <= 'z':
goto yystate29
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}
yystate27:
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c = l.next()
switch {
default:
goto yyabort
case c == '=':
goto yystate28
case c == '\t' || c == ' ':
goto yystate27
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}
yystate28:
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c = l.next()
goto yyrule11
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yystate29:
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c = l.next()
switch {
default:
goto yyrule10
case c >= '0' && c <= '9' || c >= 'A' && c <= 'Z' || c == '_' || c >= 'a' && c <= 'z':
goto yystate29
}
goto yystate30 // silence unused label error
yystate30:
c = l.next()
yystart30:
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switch {
default:
goto yyabort
case c == '"':
goto yystate32
case c == '\t' || c == ' ':
goto yystate31
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}
yystate31:
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c = l.next()
switch {
default:
goto yyrule12
case c == '\t' || c == ' ':
goto yystate31
}
yystate32:
c = l.next()
goto yyrule13
goto yystate33 // silence unused label error
yystate33:
c = l.next()
yystart33:
switch {
default:
goto yyabort
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case c == '"':
goto yystate35
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case c == '\\':
goto yystate36
case c >= '\x01' && c <= '!' || c >= '#' && c <= '[' || c >= ']' && c <= 'ÿ':
goto yystate34
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}
yystate34:
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c = l.next()
switch {
default:
goto yyabort
case c == '"':
goto yystate35
case c == '\\':
goto yystate36
case c >= '\x01' && c <= '!' || c >= '#' && c <= '[' || c >= ']' && c <= 'ÿ':
goto yystate34
}
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yystate35:
c = l.next()
goto yyrule14
yystate36:
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c = l.next()
switch {
default:
goto yyabort
case c >= '\x01' && c <= '\t' || c >= '\v' && c <= 'ÿ':
goto yystate34
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}
yyrule1: // \0
{
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return eof
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}
yyrule2: // #[^\r\n]*\n
{
l.mstart = l.i
goto yystate0
}
yyrule3: // [\r\n \t]+
{
l.mstart = l.i
goto yystate0
}
yyrule4: // {M}({M}|{D})*
{
l.state = lstateName
l.offsets = append(l.offsets, l.i)
l.mend = l.i
goto yystate0
}
yyrule5: // ([ \t]*)\{
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{
l.state = lstateLabels
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goto yystate0
}
yyrule6: // [ \t]+
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{
l.state = lstateValue
l.vstart = l.i
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goto yystate0
}
yyrule7: // [ \t]+
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goto yystate0
yyrule8: // ,?\}
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{
l.state = lstateValue
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l.mend = l.i
goto yystate0
}
yyrule9: // (,?[ \t]*)
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{
l.state = lstateLName
l.offsets = append(l.offsets, l.i)
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goto yystate0
}
yyrule10: // {L}({L}|{D})*
{
l.offsets = append(l.offsets, l.i)
goto yystate0
}
yyrule11: // [ \t]*=
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{
l.state = lstateLValue
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goto yystate0
}
yyrule12: // [ \t]+
goto yystate0
yyrule13: // \"
{
l.state = lstateLValueIn
l.offsets = append(l.offsets, l.i)
goto yystate0
}
yyrule14: // (\\.|[^\\"])*\"
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{
l.state = lstateLabels
if !utf8.Valid(l.b[l.offsets[len(l.offsets)-1] : l.i-1]) {
l.err = fmt.Errorf("invalid UTF-8 label value")
return -1
}
l.offsets = append(l.offsets, l.i-1)
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goto yystate0
}
yyrule15: // [ \t]+
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{
l.vstart = l.i
goto yystate0
}
yyrule16: // (NaN)
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{
l.val = math.Float64frombits(value.NormalNaN)
l.state = lstateTimestamp
goto yystate0
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}
yyrule17: // [^\n \t\r]+
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{
// We don't parse strictly correct floats as the conversion
// repeats the effort anyway.
l.val, l.err = strconv.ParseFloat(yoloString(l.b[l.vstart:l.i]), 64)
if l.err != nil {
return -1
}
l.state = lstateTimestamp
goto yystate0
}
yyrule18: // [ \t]+
{
l.tstart = l.i
goto yystate0
}
yyrule19: // {D}+
{
ts, err := strconv.ParseInt(yoloString(l.b[l.tstart:l.i]), 10, 64)
if err != nil {
l.err = err
return -1
}
l.ts = &ts
goto yystate0
}
yyrule20: // [\r\n]+
{
l.nextMstart = l.i
return 1
}
yyrule21: // \0
{
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return 1
}
panic("unreachable")
goto yyabort // silence unused label error
yyabort: // no lexem recognized
l.err = fmt.Errorf("no token found")
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return -1
}