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RetryAfterParser.go
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/
RetryAfterParser.go
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package parser
import (
"github.com/tutuvss/sip/core"
"github.com/tutuvss/sip/header"
)
/** SIPParser for RetryAfter header.
*/
type RetryAfterParser struct {
HeaderParser
}
/** Creates a new instance of RetryAfterParser
* @param retryAfter the header to parse
*/
func NewRetryAfterParser(retryAfter string) *RetryAfterParser {
this := &RetryAfterParser{}
this.HeaderParser.super(retryAfter)
return this
}
/** Constructor
* @param lexer the lexer to use to parse the header
*/
func NewRetryAfterParserFromLexer(lexer core.Lexer) *RetryAfterParser {
this := &RetryAfterParser{}
this.HeaderParser.superFromLexer(lexer)
return this
}
/** parse the String message
* @return SIPHeader (RetryAfter object)
* @throws SIPParseException if the message does not respect the spec.
*/
func (this *RetryAfterParser) Parse() (sh header.Header, ParseException error) {
retryAfter := header.NewRetryAfter()
var ch byte
lexer := this.GetLexer()
this.HeaderName(TokenTypes_RETRY_AFTER)
// mandatory delatseconds:
var ds int
if ds, ParseException = lexer.Number(); ParseException != nil {
return nil, ParseException
}
retryAfter.SetRetryAfter(ds)
lexer.SPorHT()
if ch, _ = lexer.LookAheadK(0); ch == '(' {
comment, _ := lexer.Comment()
retryAfter.SetComment(comment)
}
lexer.SPorHT()
for ch, _ = lexer.LookAheadK(0); ch == ';'; ch, _ = lexer.LookAheadK(0) {
lexer.Match(';')
lexer.SPorHT()
lexer.Match(TokenTypes_ID)
token := lexer.GetNextToken()
value := token.GetTokenValue()
if value == "duration" {
lexer.Match('=')
lexer.SPorHT()
var duration int
if duration, ParseException = lexer.Number(); ParseException != nil {
return nil, ParseException
}
retryAfter.SetDuration(duration)
} else {
lexer.SPorHT()
lexer.Match('=')
lexer.SPorHT()
lexer.Match(TokenTypes_ID)
secondToken := lexer.GetNextToken()
secondValue := secondToken.GetTokenValue()
retryAfter.SetParameter(value, secondValue)
}
lexer.SPorHT()
}
return retryAfter, nil
}