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#!/usr/bin/ruby
# encoding: utf-8
require 'antlr3/test/functional'
class XMLLexerTest < ANTLR3::Test::Functional
inline_grammar( <<-'END' )
lexer grammar XML;
options { language = Ruby; }
@members {
include ANTLR3::Test::CaptureOutput
include ANTLR3::Test::RaiseErrors
def quote(text)
text = text.gsub(/\"/, '\\"')
\%("#{ text }")
end
}
DOCUMENT
: XMLDECL? WS? DOCTYPE? WS? ELEMENT WS?
;
fragment DOCTYPE
:
'<!DOCTYPE' WS rootElementName=GENERIC_ID
{say("ROOTELEMENT: " + $rootElementName.text)}
WS
(
( 'SYSTEM' WS sys1=VALUE
{say("SYSTEM: " + $sys1.text)}
| 'PUBLIC' WS pub=VALUE WS sys2=VALUE
{say("PUBLIC: " + $pub.text)}
{say("SYSTEM: " + $sys2.text)}
)
( WS )?
)?
( dtd=INTERNAL_DTD
{say("INTERNAL DTD: " + $dtd.text)}
)?
'>'
;
fragment INTERNAL_DTD : '[' (options {greedy=false;} : .)* ']' ;
fragment PI :
'<?' target=GENERIC_ID WS?
{say("PI: " + $target.text)}
( ATTRIBUTE WS? )* '?>'
;
fragment XMLDECL :
'<?' ('x'|'X') ('m'|'M') ('l'|'L') WS?
{say("XML declaration")}
( ATTRIBUTE WS? )* '?>'
;
fragment ELEMENT
: ( START_TAG
(ELEMENT
| t=PCDATA
{say("PCDATA: " << quote($t.text))}
| t=CDATA
{say("CDATA: " << quote($t.text))}
| t=COMMENT
{say("Comment: " << quote($t.text))}
| pi=PI
)*
END_TAG
| EMPTY_ELEMENT
)
;
fragment START_TAG
: '<' WS? name=GENERIC_ID WS?
{say("Start Tag: " + $name.text)}
( ATTRIBUTE WS? )* '>'
;
fragment EMPTY_ELEMENT
: '<' WS? name=GENERIC_ID WS?
{say("Empty Element: " + $name.text)}
( ATTRIBUTE WS? )* '/>'
;
fragment ATTRIBUTE
: name=GENERIC_ID WS? '=' WS? value=VALUE
{say("Attr: " + $name.text + " = "+ $value.text)}
;
fragment END_TAG
: '</' WS? name=GENERIC_ID WS? '>'
{say("End Tag: " + $name.text)}
;
fragment COMMENT
: '<!--' (options {greedy=false;} : .)* '-->'
;
fragment CDATA
: '<![CDATA[' (options {greedy=false;} : .)* ']]>'
;
fragment PCDATA : (~'<')+ ;
fragment VALUE :
( '\"' (~'\"')* '\"'
| '\'' (~'\'')* '\''
)
;
fragment GENERIC_ID
: ( LETTER | '_' | ':')
( options {greedy=true;} : LETTER | '0'..'9' | '.' | '-' | '_' | ':' )*
;
fragment LETTER
: 'a'..'z'
| 'A'..'Z'
;
fragment WS :
( ' '
| '\t'
| ( '\n'
| '\r\n'
| '\r'
)
)+
;
END
it "should be valid" do
lexer = XML::Lexer.new( <<-'END'.fixed_indent( 0 ) )
<?xml version='1.0'?>
<!DOCTYPE component [
<!ELEMENT component (PCDATA|sub)*>
<!ATTLIST component
attr CDATA #IMPLIED
attr2 CDATA #IMPLIED
>
<!ELMENT sub EMPTY>
]>
<component attr="val'ue" attr2='val"ue'>
<!-- This is a comment -->
Text
<![CDATA[huhu]]>
öäüß
&
<
<?xtal cursor='11'?>
<sub/>
<sub></sub>
</component>
END
lexer.map { |tk| tk }
lexer.output.should == <<-'END'.fixed_indent( 0 )
XML declaration
Attr: version = '1.0'
ROOTELEMENT: component
INTERNAL DTD: [
<!ELEMENT component (PCDATA|sub)*>
<!ATTLIST component
attr CDATA #IMPLIED
attr2 CDATA #IMPLIED
>
<!ELMENT sub EMPTY>
]
Start Tag: component
Attr: attr = "val'ue"
Attr: attr2 = 'val"ue'
PCDATA: "
"
Comment: "<!-- This is a comment -->"
PCDATA: "
Text
"
CDATA: "<![CDATA[huhu]]>"
PCDATA: "
öäüß
&
<
"
PI: xtal
Attr: cursor = '11'
PCDATA: "
"
Empty Element: sub
PCDATA: "
"
Start Tag: sub
End Tag: sub
PCDATA: "
"
End Tag: component
END
end
end
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