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133 lines
2.7 KiB
133 lines
2.7 KiB
lexer grammar t012lexerXMLLexer;
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options {
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language = Python;
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}
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@header {
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from cStringIO import StringIO
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}
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@lexer::init {
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self.outbuf = StringIO()
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}
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@lexer::members {
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def output(self, line):
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self.outbuf.write(line.encode('utf-8') + "\n")
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}
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DOCUMENT
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: XMLDECL? WS? DOCTYPE? WS? ELEMENT WS?
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;
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fragment DOCTYPE
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:
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'<!DOCTYPE' WS rootElementName=GENERIC_ID
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{self.output("ROOTELEMENT: "+rootElementName.text)}
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WS
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(
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( 'SYSTEM' WS sys1=VALUE
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{self.output("SYSTEM: "+sys1.text)}
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| 'PUBLIC' WS pub=VALUE WS sys2=VALUE
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{self.output("PUBLIC: "+pub.text)}
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{self.output("SYSTEM: "+sys2.text)}
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)
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( WS )?
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)?
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( dtd=INTERNAL_DTD
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{self.output("INTERNAL DTD: "+dtd.text)}
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)?
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'>'
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;
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fragment INTERNAL_DTD : '[' (options {greedy=false;} : .)* ']' ;
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fragment PI :
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'<?' target=GENERIC_ID WS?
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{self.output("PI: "+target.text)}
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( ATTRIBUTE WS? )* '?>'
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;
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fragment XMLDECL :
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'<?' ('x'|'X') ('m'|'M') ('l'|'L') WS?
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{self.output("XML declaration")}
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( ATTRIBUTE WS? )* '?>'
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;
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fragment ELEMENT
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: ( START_TAG
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(ELEMENT
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| t=PCDATA
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{self.output("PCDATA: \""+$t.text+"\"")}
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| t=CDATA
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{self.output("CDATA: \""+$t.text+"\"")}
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| t=COMMENT
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{self.output("Comment: \""+$t.text+"\"")}
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| pi=PI
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)*
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END_TAG
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| EMPTY_ELEMENT
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)
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;
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fragment START_TAG
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: '<' WS? name=GENERIC_ID WS?
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{self.output("Start Tag: "+name.text)}
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( ATTRIBUTE WS? )* '>'
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;
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fragment EMPTY_ELEMENT
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: '<' WS? name=GENERIC_ID WS?
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{self.output("Empty Element: "+name.text)}
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( ATTRIBUTE WS? )* '/>'
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;
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fragment ATTRIBUTE
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: name=GENERIC_ID WS? '=' WS? value=VALUE
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{self.output("Attr: "+name.text+"="+value.text)}
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;
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fragment END_TAG
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: '</' WS? name=GENERIC_ID WS? '>'
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{self.output("End Tag: "+name.text)}
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;
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fragment COMMENT
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: '<!--' (options {greedy=false;} : .)* '-->'
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;
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fragment CDATA
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: '<![CDATA[' (options {greedy=false;} : .)* ']]>'
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;
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fragment PCDATA : (~'<')+ ;
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fragment VALUE :
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( '\"' (~'\"')* '\"'
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| '\'' (~'\'')* '\''
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)
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;
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fragment GENERIC_ID
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: ( LETTER | '_' | ':')
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( options {greedy=true;} : LETTER | '0'..'9' | '.' | '-' | '_' | ':' )*
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;
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fragment LETTER
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: 'a'..'z'
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| 'A'..'Z'
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;
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fragment WS :
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( ' '
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| '\t'
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| ( '\n'
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| '\r\n'
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| '\r'
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)
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)+
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;
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