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ruby-ll: full support for parsing doctypes.

This commit is contained in:
Yorick Peterse 2015-02-13 18:55:11 +01:00
parent 71aefb53cc
commit 15a3ab9ba5
1 changed files with 63 additions and 6 deletions
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69
lib/oga/xml/parser.rll
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@ -1,3 +1,25 @@
%header
{
##
# DOM parser for both XML and HTML.
#
# This parser does not produce a dedicated AST, instead it emits XML nodes
# directly. Basic usage of this parser is as following:
#
# parser = Oga::XML::Parser.new('<foo></foo>')
# document = parser.parse
#
# To enable HTML parsing you'd use the following instead:
#
# parser = Oga::XML::Parser.new('<foo></foo>', :html => true)
# document = parser.parse
#
# In both cases you can use either a String or an IO as the parser input. IO
# instances will result in lower memory overhead, especially when parsing large
# files.
#
}
%name Oga::XML::Parser;
%terminals T_TEXT T_STRING_SQUOTE T_STRING_DQUOTE T_STRING_BODY;
@ -8,12 +30,12 @@
%terminals T_PROC_INS_START T_PROC_INS_NAME T_PROC_INS_END;
document
= expressions
| _
= expressions { on_document(val[0]) }
| _ { on_document }
;
expressions
= expression expressions
= expression expressions { val[0] + val[1] }
| _
;
@ -31,10 +53,20 @@ expression
# <!DOCTYPE html PUBLIC "foo" "bar">
# <!DOCTYPE html PUBLIC "foo" "bar">
# <!DOCTYPE html [ ... ]>
doctype
= T_DOCTYPE_START T_DOCTYPE_NAME doctype_follow
{
val[2]
name = val[1]
follow = val[2]
on_doctype(
:name => name,
:type => follow[0],
:public_id => follow[1],
:system_id => follow[2],
:inline_rules => follow[3]
)
}
;
@ -56,6 +88,7 @@ doctype_inline_follow
doctype_types
= string doctype_types_follow { [val[0], val[1]] }
| T_DOCTYPE_END { nil }
;
doctype_types_follow
@ -64,6 +97,8 @@ doctype_types_follow
;
# Strings
#
# This parses both (empty) single and double quoted strings.
string
= T_STRING_DQUOTE string_dquote_follow { val[1] }
@ -85,8 +120,8 @@ string_body
;
string_body_follow
= T_STRING_BODY string_body { val[0] + val[1] }
| _ { '' }
= T_STRING_BODY string_body_follow { val[0] + val[1] }
| _ { '' }
;
%inner
@ -133,4 +168,26 @@ string_body_follow
def on_doctype(options = {})
return Doctype.new(options)
end
##
# @param [Array] children
# @return [Oga::XML::Document]
#
def on_document(children = [])
document = Document.new(:type => @lexer.html ? :html : :xml)
children.each do |child|
if child.is_a?(Doctype)
document.doctype = child
elsif child.is_a?(XmlDeclaration)
document.xml_declaration = child
else
document.children << child
end
end
return document
end
}