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UnsupportedParser.go
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UnsupportedParser.go
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package parser
import (
"sip/core"
"sip/header"
)
/** SIPParser for Unsupported header.
*/
type UnsupportedParser struct {
HeaderParser
}
/** Creates a new instance of UnsupportedParser
* @param unsupported - Unsupported header to parse
*/
func NewUnsupportedParser(unsupported string) *UnsupportedParser {
this := &UnsupportedParser{}
this.HeaderParser.super(unsupported)
return this
}
/** Constructor
* @param lexer - the lexer to use to parse the header
*/
func NewUnsupportedParserFromLexer(lexer core.Lexer) *UnsupportedParser {
this := &UnsupportedParser{}
this.HeaderParser.superFromLexer(lexer)
return this
}
/** parse the String message
* @return SIPHeader (Unsupported object)
* @throws SIPParseException if the message does not respect the spec.
*/
func (this *UnsupportedParser) Parse() (sh header.Header, ParseException error) {
unsupportedList := header.NewUnsupportedList()
var ch byte
lexer := this.GetLexer()
this.HeaderName(TokenTypes_UNSUPPORTED)
for ch, _ = lexer.LookAheadK(0); ch != '\n'; ch, _ = lexer.LookAheadK(0) {
lexer.SPorHT()
unsupported := header.NewUnsupported()
unsupported.SetHeaderName(core.SIPHeaderNames_UNSUPPORTED)
// Parsing the option tag
lexer.Match(TokenTypes_ID)
token := lexer.GetNextToken()
unsupported.SetOptionTag(token.GetTokenValue())
lexer.SPorHT()
unsupportedList.PushBack(unsupported)
for ch, _ = lexer.LookAheadK(0); ch == ','; ch, _ = lexer.LookAheadK(0) {
lexer.Match(',')
lexer.SPorHT()
unsupported = header.NewUnsupported()
// Parsing the option tag
lexer.Match(TokenTypes_ID)
token = lexer.GetNextToken()
unsupported.SetOptionTag(token.GetTokenValue())
lexer.SPorHT()
unsupportedList.PushBack(unsupported)
}
}
return unsupportedList, nil
}