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AllowParser.go
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AllowParser.go
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package parser
import (
"sip/core"
"sip/header"
)
/** SIPParser for Allow header.
*/
type AllowParser struct {
HeaderParser
}
/**
* Creates a new instance of AllowParser
* @param allow the header to parse
*/
func NewAllowParser(allow string) *AllowParser {
this := &AllowParser{}
this.HeaderParser.super(allow)
return this
}
/** Constructor
* @param lexer the lexer to use to parse the header
*/
func NewAllowParserFromLexer(lexer core.Lexer) *AllowParser {
this := &AllowParser{}
this.HeaderParser.superFromLexer(lexer)
return this
}
/** parse the Allow String header
* @return Header (AllowList object)
* @throws SIPParseException if the message does not respect the spec.
*/
func (this *AllowParser) Parse() (sh header.Header, ParseException error) {
allowList := header.NewAllowList()
var ch byte
lexer := this.GetLexer()
this.HeaderName(TokenTypes_ALLOW)
allow := header.NewAllow()
allow.SetHeaderName(core.SIPHeaderNames_ALLOW)
lexer.SPorHT()
lexer.Match(TokenTypes_ID)
token := lexer.GetNextToken()
allow.SetMethod(token.GetTokenValue())
allowList.PushBack(allow)
lexer.SPorHT()
for ch, _ = lexer.LookAheadK(0); ch == ','; ch, _ = lexer.LookAheadK(0) {
lexer.Match(',')
lexer.SPorHT()
allow = header.NewAllow()
lexer.Match(TokenTypes_ID)
token = lexer.GetNextToken()
allow.SetMethod(token.GetTokenValue())
allowList.PushBack(allow)
lexer.SPorHT()
}
lexer.SPorHT()
lexer.Match('\n')
return allowList, nil
}