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SupportedParser.go
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/
SupportedParser.go
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package parser
import (
"github.com/tutuvss/sip/core"
"github.com/tutuvss/sip/header"
)
/** SIPParser for Supported header.
*/
type SupportedParser struct {
HeaderParser
}
/** Creates a new instance of SupportedParser
* @param supported the header to parse
*/
func NewSupportedParser(supported string) *SupportedParser {
this := &SupportedParser{}
this.HeaderParser.super(supported)
return this
}
/** Constructor
* @param lexer the lexer to use to parse the header
*/
func NewSupportedParserFromLexer(lexer core.Lexer) *SupportedParser {
this := &SupportedParser{}
this.HeaderParser.superFromLexer(lexer)
return this
}
/** parse the String message
* @return SIPHeader (Supported object)
* @throws SIPParseException if the message does not respect the spec.
*/
func (this *SupportedParser) Parse() (sh header.Header, ParseException error) {
supportedList := header.NewSupportedList()
var ch byte
lexer := this.GetLexer()
this.HeaderName(TokenTypes_SUPPORTED)
for ch, _ = lexer.LookAheadK(0); ch != '\n'; ch, _ = lexer.LookAheadK(0) {
lexer.SPorHT()
supported := header.NewSupported()
supported.SetHeaderName(core.SIPHeaderNames_SUPPORTED)
// Parsing the option tag
lexer.Match(TokenTypes_ID)
token := lexer.GetNextToken()
supported.SetOptionTag(token.GetTokenValue())
lexer.SPorHT()
supportedList.PushBack(supported)
for ch, _ = lexer.LookAheadK(0); ch == ','; ch, _ = lexer.LookAheadK(0) {
lexer.Match(',')
lexer.SPorHT()
supported = header.NewSupported()
// Parsing the option tag
lexer.Match(TokenTypes_ID)
token = lexer.GetNextToken()
supported.SetOptionTag(token.GetTokenValue())
lexer.SPorHT()
supportedList.PushBack(supported)
}
}
return supportedList, nil
}