Commit Graph

364 Commits

Author SHA1 Message Date
Yorick Peterse 9b8e9f49c6 Support for lexing empty attribute values.
This ensures that Oga can lex the following properly:

    <input value="" />

Previously Ragel would stop upon finding the empty string. This was caused due
to the string rules being declared as following:

    string_dquote = (dquote ^dquote+ dquote);
    string_squote = (squote ^squote+ squote);

These rules only match strings _with_ content, not without. Since Ragel stops
consuming input the moment it finds unhandled data this resulted in incorrect
tokens being emitted.
2014-09-03 23:10:50 +02:00
Yorick Peterse dc5874f5aa Show XML parsing errors when using IO as input.
Previously this wouldn't display anything due to the IO object being exhausted.
To fix this the input has to be wound back to the start, which means re-reading
it. Sadly I can't think of a way around this that doesn't require buffering
lines while parsing them (which massively increases memory usage).
2014-09-03 22:52:59 +02:00
Yorick Peterse bd31379c85 Fixed processing of nested predicates.
This ensures that nested predicates and functions that depend on predicates are
processed correctly.
2014-09-03 20:56:07 +02:00
Yorick Peterse 3196050978 Specs for nested predicates & self axis. 2014-09-03 20:55:55 +02:00
Yorick Peterse 2b96d65103 XPath "self" axis inside predicates.
The "self" axis should use the current context node when inside a predicate.
2014-09-03 09:40:17 +02:00
Yorick Peterse 71f2b42074 Convenience methods for parsing XML/HTML. 2014-09-03 09:31:48 +02:00
Yorick Peterse efc3827865 Extended the inline JS lexer spec. 2014-09-03 09:26:12 +02:00
Yorick Peterse 145315c26a Spec for inline JS and CDATA tags. 2014-09-03 00:34:10 +02:00
Yorick Peterse f268af5bc6 Fixed token position in the inline JS spec. 2014-09-03 00:30:27 +02:00
Yorick Peterse 868df603ab Added spec for inline JS + comments. 2014-09-03 00:26:45 +02:00
Yorick Peterse 07617a9c47 Failing spec for lexing inline Javascript. 2014-09-02 22:50:36 +02:00
Yorick Peterse 9649b50cc9 XML module for more easily querying using XPath. 2014-09-02 20:16:52 +02:00
Yorick Peterse ad34ab47a0 Support for binding/evaluating XPath variables. 2014-09-02 19:04:02 +02:00
Yorick Peterse 5a0e8c5480 Lexing/parsing of XPath variable references. 2014-09-02 10:52:08 +02:00
Yorick Peterse 5de37bdf81 Support for the XPath ">=" operator. 2014-09-01 22:45:01 +02:00
Yorick Peterse 099227901a Support for the XPath "<=" operator. 2014-09-01 22:40:50 +02:00
Yorick Peterse 6eacf74da4 Fixed comparing node equality in XPath expressions
Previously this would take the text of the entire node set, not of the first
node in the set.
2014-09-01 22:34:18 +02:00
Yorick Peterse 8884db8cb6 Support for the XPath ">" operator. 2014-09-01 22:23:35 +02:00
Yorick Peterse 6b45a03cb4 Support for the XPath "<" operator. 2014-09-01 22:20:32 +02:00
Yorick Peterse e1d9e62b72 Support for the XPath "!=" operator. 2014-09-01 20:48:11 +02:00
Yorick Peterse 9e5f15787d Support for the XPath "=" operator. 2014-09-01 18:57:12 +02:00
Yorick Peterse 1a6c0f0d35 Renamed various XPath operator specs. 2014-09-01 18:50:13 +02:00
Yorick Peterse a70645fb89 Support for the XPath sub/- operator. 2014-08-29 09:41:17 +02:00
Yorick Peterse 89686b6cff Support for the XPath mul/* operator. 2014-08-29 09:36:40 +02:00
Yorick Peterse 034b360d13 Support for the XPath "mod" operator. 2014-08-29 09:31:11 +02:00
Yorick Peterse 78c8cd1323 Support for the XPath "div" operator. 2014-08-28 23:05:12 +02:00
Yorick Peterse ced7f739fc Support for the XPath "add" / "+" operator. 2014-08-28 21:18:09 +02:00
Yorick Peterse 4fa40b58cf Support for the XPath "or" operator. 2014-08-28 21:01:12 +02:00
Yorick Peterse 4f189d9218 Support for the XPath "and" operator. 2014-08-28 09:42:55 +02:00
Yorick Peterse 809ed9bfa6 Handle boolean values in the boolean() function. 2014-08-28 09:36:21 +02:00
Yorick Peterse 543112dcdc Support for the XPath round() function. 2014-08-28 00:00:25 +02:00
Yorick Peterse a2b8e3c954 Support for the XPath ceiling() function. 2014-08-27 23:56:43 +02:00
Yorick Peterse c8fb1ad202 Support for the XPath floor() function. 2014-08-27 23:52:23 +02:00
Yorick Peterse 27d2b6c2c3 number() spec for converting empty strings. 2014-08-27 23:52:12 +02:00
Yorick Peterse 7c68f2a49b Raise for non node sets in the sum() function.
According to the XPath spec this function *can only* take node sets, nothing
else. Lets actually enforce that.
2014-08-27 23:47:19 +02:00
Yorick Peterse ac06670c24 Better conversion of types to numbers.
The XPath number() function should also be capable of converting booleans to
numbers, something it previously was not able to do. In order to do this
reliably we can't rely on the string() function as this would make it impossible
to distinguish between literal string values and booleans. This is due to
true(), which returns a TrueClass, being converted to the string "true". This
string in turn can't be converted to a float.
2014-08-27 23:38:47 +02:00
Yorick Peterse fcb28d5ae8 Specs for various XPath evaluator helper methods. 2014-08-27 23:37:12 +02:00
Yorick Peterse 022d8e0ada Extra test for sum() for default return values. 2014-08-27 23:07:38 +02:00
Yorick Peterse 30a5d01ebd Support for the XPath sum() function. 2014-08-27 23:05:04 +02:00
Yorick Peterse 585b3535b2 Support for the XPath lang() function. 2014-08-27 20:26:27 +02:00
Yorick Peterse 7c41fa814f Default attribute namespaces.
When an attribute is prefixed with "xml" the default namespace should be used
automatically. This namespace is not registered on element level by default as
this namespace isn't registered manually, instead it's a "magic" namespace. This
also ensures we match the behaviour of libxml more closely, hopefully reducing
confusion.
2014-08-27 20:24:40 +02:00
Yorick Peterse d2f991538d Support for the XPath true()/false() functions. 2014-08-27 09:37:28 +02:00
Yorick Peterse 4ef79bad90 Support for the XPath not() function. 2014-08-27 09:35:02 +02:00
Yorick Peterse e288ab88f5 Support for the XPath boolean() function. 2014-08-26 20:22:28 +02:00
Yorick Peterse 564f8859a0 Better XPath evaluation tests for numbers. 2014-08-26 20:22:18 +02:00
Yorick Peterse bcd138a15a Lexing of explicit negative/positive XPath numbers 2014-08-26 20:21:30 +02:00
Yorick Peterse 8295fa5783 Support for the XPath translate() function. 2014-08-26 18:14:44 +02:00
Yorick Peterse 7f3f626744 Support for the XPath normalize-space() function. 2014-08-26 00:06:58 +02:00
Yorick Peterse 06bed1cfdd Support for the XPath string-length() function. 2014-08-25 23:46:18 +02:00
Yorick Peterse a60057db5c Proper handling of decimals for string() calls.
When calling the string() XPath function floats with zero decimals (10.0, 5.0,
etc) should result in a string without any decimals. Ruby converts 10.0 to
"10.0" whereas XPath expects "10".
2014-08-25 23:21:36 +02:00
Yorick Peterse 6c0c5ab720 Revert "Return XPath integers as actual integers."
The particular case of string(10) having to return "10" instead of "10.0" will
be handled separately. Returning integers breaks behaviour/expectations
elsewhere.

This reverts commit 431a253000.
2014-08-25 23:14:22 +02:00
Yorick Peterse a1a2190fe2 Support for the XPath substring() function. 2014-08-25 23:13:34 +02:00
Yorick Peterse 5382891106 Support for the XPath number() function. 2014-08-25 23:13:03 +02:00
Yorick Peterse b2ca18e127 Support for the XPath substring-after() function. 2014-08-25 22:19:13 +02:00
Yorick Peterse b9cdb4a72b Support for the XPath substring-before() function. 2014-08-25 22:11:05 +02:00
Yorick Peterse 83b873e3c1 Support for the XPath contains() function. 2014-08-25 21:52:33 +02:00
Yorick Peterse 5b65d6c31a Support for the xpath starts-with() function. 2014-08-25 09:43:06 +02:00
Yorick Peterse 276a5ab83b Support for lexing empty XPath strings. 2014-08-25 09:42:51 +02:00
Yorick Peterse b688c6dc1b Support for the XPath concat() function. 2014-08-23 20:24:18 +02:00
Yorick Peterse 431a253000 Return XPath integers as actual integers.
This is to ensure that calls such as string(10) return "10" and not "10.0". It
also saves integer -> float conversions when they're not needed.
2014-08-23 20:22:58 +02:00
Yorick Peterse b316fd3e1c Support for the XPath string() function. 2014-08-22 11:06:10 +02:00
Yorick Peterse ff8a4ad3aa Ignore comment nodes in NodeSet#text. 2014-08-22 11:05:39 +02:00
Yorick Peterse 99be3182ae Support for evaluating XPath floats. 2014-08-22 10:59:03 +02:00
Yorick Peterse 6ac3408a71 Match all node types when using node()
Previously this would only match element and text nodes.
2014-08-22 10:58:36 +02:00
Yorick Peterse da09f1296c Support for using namespace-uri() with attributes. 2014-08-21 22:36:18 +02:00
Yorick Peterse 0d41693bfc Support for using name() with attributes. 2014-08-21 21:05:06 +02:00
Yorick Peterse acc056eea4 Support for using local-name() on attributes. 2014-08-21 21:03:28 +02:00
Yorick Peterse 1dd6416bea Basic support for the XPath name() function. 2014-08-21 20:47:20 +02:00
Yorick Peterse 8cc0db2283 Support for the XPath namespace-uri() function. 2014-08-21 19:02:41 +02:00
Yorick Peterse 9e20b5ca3e Support for the XPath local-name() function. 2014-08-21 10:21:02 +02:00
Yorick Peterse 2deb7a6d84 Support for the XPath id() function.
This comes with the limitation that it *always* uses the "id" attribute. This is
due to Oga not supporting DTD parsing/evaluation.
2014-08-20 21:06:35 +02:00
Yorick Peterse d351bc26cc Support for the XPath count() function. 2014-08-20 10:16:06 +02:00
Yorick Peterse 709fa365e0 XPath support for last() + evaluator docs.
I really dislike using a stack as it introduces an internal state. Sadly there
doesn't seem to be an easy way around this.
2014-08-19 22:59:26 +02:00
Yorick Peterse 423af37422 Basic support for the XPath last() function. 2014-08-18 19:00:32 +02:00
Yorick Peterse 2817784e6b Support for the XPath pipe operator. 2014-08-17 22:04:08 +02:00
Yorick Peterse d1735750c1 Only store unique nodes in XML::NodeSet.
It's called a "set" after all.
2014-08-17 22:03:44 +02:00
Yorick Peterse bb503728af XPath support for processing instructions. 2014-08-16 22:37:57 +02:00
Yorick Peterse 0d7609da88 Support for parsing XML processing instructions. 2014-08-15 22:23:26 +02:00
Yorick Peterse 8f4eaf3823 Lexing of XML processing instructions. 2014-08-15 22:04:45 +02:00
Yorick Peterse ccd95d69d8 Support for the XPath comment() test. 2014-08-15 20:49:13 +02:00
Yorick Peterse 4e8cca258c Fixed lexing of XML CDATA tags. 2014-08-15 20:47:58 +02:00
Yorick Peterse 81edce2eb8 Fixed lexing of XML comments.
The previous setup would consume too much. For example the following HTML:

    <a><!--foo--><b><!--bar--></b></a>

would result in the following T_COMMENT token:

    "foo--><b><!--bar"

The new setup requires the marking of a start position. I'm not a huge fan of
this but there doesn't appear to be a way around this.
2014-08-15 20:42:32 +02:00
Yorick Peterse 4d7f224892 Support for the XPath text() type test. 2014-08-15 10:46:00 +02:00
Yorick Peterse 14aa420091 Use a new base class for XML text nodes.
The classes Text, Cdata and Comment now extend CharacterData instead of Text.
2014-08-15 10:43:16 +02:00
Yorick Peterse 24bc84e15e Added XML::Element#text_nodes.
This method returns all the text nodes directly nested in an element.
2014-08-15 10:07:49 +02:00
Yorick Peterse d0092b434d Removed Document#available_namespaces.
Namespaces aren't scoped per document but instead per element, thus this method
doesn't make that much sense. This also fixes the remaining, failing XPath test.
2014-08-14 23:12:33 +02:00
Yorick Peterse d34e4697de Match node types in node_matches?
The method XPath::Evaluator#node_matches? now has a special case to handle
"type-test" nodes. This in turn fixes a bunch of failing tests such as those for
the XPath query "parent::node()".
2014-08-14 22:54:19 +02:00
Yorick Peterse a437d67573 Renamed node_type to type_test. 2014-08-14 22:35:41 +02:00
Yorick Peterse 05f6fc2f8d Implement node() as a type test, not a function. 2014-08-14 22:30:14 +02:00
Yorick Peterse 6ad5170476 Support for lexing/parsing XPath type tests.
Unlike what I thought before syntax such as "node()" is not a function call.
Instead this is a special node test that tests the *types* of nodes, not their
names.
2014-08-14 21:51:58 +02:00
Yorick Peterse 23441bb5a4 Basic support for the XPath node() function. 2014-08-14 18:17:08 +02:00
Yorick Peterse f2fe2a4b47 Failing XPath spec for double slashes.
The lexer doesn't lex things correctly due to "//" and "/" both being separate
rules. As a result the lexer emits two T_SLASH tokens for queries such as
".//foo".
2014-08-13 00:37:12 +02:00
Yorick Peterse f4ae83498e Eval specs for the self axis short form. 2014-08-11 09:35:01 +02:00
Yorick Peterse ffcefa92a7 Eval specs for the descendant-or-self short axis.
This currently fails due to the node() function not being implemented just yet.
2014-08-11 09:33:09 +02:00
Yorick Peterse aef3e0f27e Evaluator specs for the attribute axis short form. 2014-08-11 09:32:45 +02:00
Yorick Peterse 4d956c9ef0 Support for the XPath "namespace" axis. 2014-08-11 00:58:57 +02:00
Yorick Peterse 873bd82273 Stricted matching of namespaced elements. 2014-08-11 00:47:07 +02:00
Yorick Peterse 78da274452 Updated XPath specs for better namespace handling. 2014-08-11 00:42:06 +02:00
Yorick Peterse 33c28f633b Proper namespace support for elements.
This is still a bit rough on the edges but already way better than the broken
setup I had before.
2014-08-11 00:41:36 +02:00
Yorick Peterse 04cbbdcf9e Proper namespace support for attributes.
This separates namespace handling into namespace names and namespace objects.
The namespace objects are retrieved from the element an attribute belongs to.
Once retrieved the namespace is cached, due to the overhead of retrieving
namespaces in large documents.
2014-08-11 00:40:17 +02:00
Yorick Peterse fe8f77cf45 Basic work for supporting namespace URIs. 2014-08-08 19:03:42 +02:00
Yorick Peterse f002061aaa Extra type validation for XML::Element options. 2014-08-07 21:10:01 +02:00
Yorick Peterse b1388ff84a Ripped out inspect fuckery.
The old code used for generating Object#inspect values has been ripped out (for
the most part). The result is a non indented but far more compact #inspect
output. The code for this is also easier and doesn't break the signature of
Object#inspect.
2014-08-07 21:09:10 +02:00
Yorick Peterse 798372d099 Test for element attributes without namespaces. 2014-08-07 20:18:02 +02:00
Yorick Peterse 3b2279e410 Don't create empty Namespace nodes. 2014-08-07 20:16:46 +02:00
Yorick Peterse 97e59fe449 Use the Namespace class for namespaces vs Strings. 2014-08-07 20:03:26 +02:00
Yorick Peterse f653203220 Tests for the Namespace class. 2014-08-07 20:02:56 +02:00
Yorick Peterse 8e8ea64206 Fixed serializing of elements to XML. 2014-08-06 00:04:42 +02:00
Yorick Peterse d7df908649 Trimmed XML inspect values. 2014-08-05 23:57:12 +02:00
Yorick Peterse 26d4bdc5b1 Support for the XPath "self" axis. 2014-08-05 21:10:12 +02:00
Yorick Peterse 669ad25000 Corrected following-sibling spec description. 2014-08-05 19:28:47 +02:00
Yorick Peterse 8a9b26fa73 Basic support for the preceding-sibling xpath axis 2014-08-05 19:28:26 +02:00
Yorick Peterse e34a1ed481 Corrected specs for the "parent" xpath axis. 2014-08-05 19:26:01 +02:00
Yorick Peterse fc1d9776f3 Basic support for the XPath "preceding" axis. 2014-08-05 10:16:37 +02:00
Yorick Peterse 375f3d7870 Basic support for the XPath "parent" axis.
The usage of `parent::node()` is not yet supported.
2014-08-05 09:34:57 +02:00
Yorick Peterse a1f80b4995 Support for the "following-sibling" axis.
This also comes with some small cleanups regarding
XPath::Evaluator#node_matches?. This change removes the need to, every time,
also use can_match_node?() to prevent NoMethodError errors from popping up.
2014-08-04 21:51:51 +02:00
Yorick Peterse 57fcbbd0fc Allow Document#each_node to skip child nodes.
Child nodes can be skipped by throwing :skip_children.
2014-08-04 10:00:32 +02:00
Yorick Peterse ef1ad5406a Don't yield indexes in Document#each_node.
These indexes won't be used so there's no point in yielding them.
2014-08-04 09:08:39 +02:00
Yorick Peterse 4dc85df4e7 Corrected the XPath "following" axis specs. 2014-08-03 22:14:44 +02:00
Yorick Peterse 7fab231992 Unique spec node names for Document#each_node.
This makes it a little bit easier to see if the order is actually correct.
2014-08-01 22:09:08 +02:00
Yorick Peterse 8899542971 Better specs for Document#each_node. 2014-08-01 19:00:47 +02:00
Yorick Peterse 52a4375278 Prepare setup for *actual* following support.
The previous commit was nonsense as I didn't understand XPath's "following" axis
properly. This commit introduces proper tests and a note for future me so that I
can implement it properly.
2014-07-30 00:16:44 +02:00
Yorick Peterse 9a97d936e3 Support for the XPath "following" axis. 2014-07-29 23:09:16 +02:00
Yorick Peterse 023e7c6583 Spec for absolute XPath paths from elements. 2014-07-29 09:29:56 +02:00
Yorick Peterse 28f77b6d9b Corrected XPath attribute axis specs. 2014-07-28 00:43:52 +02:00
Yorick Peterse 23de57a3a0 Parse bare XPath node tests as child axes.
When parsing a bare node test such as "A" this is now parsed as following:

    (axis "child" (test nil "A"))

Instead of this:

    (test nil "A")

According to the XPath specification both are identical and this simplifies some
of the code in the XPath evaluator.
2014-07-28 00:34:26 +02:00
Yorick Peterse 766b35d9ce Specs for descendant-or-self. 2014-07-25 21:23:52 +02:00
Yorick Peterse 6e2be78546 Rewrote context names of some XPath specs. 2014-07-25 00:49:13 +02:00
Yorick Peterse cdf48979d5 Re-organized XPath axis evaluation specs. 2014-07-24 21:42:05 +02:00
Yorick Peterse dd37b028a0 Support for the XPath descendant axis. 2014-07-24 09:49:05 +02:00
Yorick Peterse a0ecba6321 Support for the XPath child axis. 2014-07-22 21:25:02 +02:00
Yorick Peterse ec08b41737 Specs for various XPath::Evaluator helper methods. 2014-07-22 21:04:09 +02:00
Yorick Peterse 1f9d2ede95 Skip node matching for incompatible nodes. 2014-07-22 20:45:15 +02:00
Yorick Peterse 4142504101 Revert "Lex XPath axes without a node test."
Upon further investigation this change turned out to be useless. Nokogiri/libxml
does not allow the use of long axes without tests, instead it ends up
lexing/parsing such a value as a simple node test.

This reverts commit f699b0d097.
2014-07-22 15:53:00 +02:00
Yorick Peterse c43c38fab9 Emit node() calls for certain short axes.
An axes such as "." is the same as "self::node()". To simplify things on
parser/evaluator level we'll emit the corresponding tokens for a "node()"
function call for these axes.
2014-07-22 15:50:39 +02:00
Yorick Peterse f699b0d097 Lex XPath axes without a node test. 2014-07-20 07:57:45 +02:00
Yorick Peterse 488000438b Support for querying attributes using XPath. 2014-07-20 07:47:01 +02:00
Yorick Peterse d5569ead0b Use XML::Attribute for element attributes.
Instead of using a raw Hash Oga now uses the XML::Attribute class for storing
information about element attributes.

Attributes are stored as an Array of XML::Attribute instances. This allows the
attributes to be more easily modified. If they were stored as a Hash you'd not
only have to update the attributes themselves but also the Hash that contains
them.

While using an Array has a slight runtime cost in most cases the amount of
attributes is small enough that this doesn't really pose a problem. If webscale
performance is desired at some point in the future Oga could most likely cache
the lookup of an attribute. This however is something for the future.
2014-07-20 07:29:37 +02:00
Yorick Peterse ad4d7a4744 Rewrote an attribute spec.
This way the spec doesn't depend on the attributes object being a Hash.
2014-07-19 21:07:11 +02:00
Yorick Peterse ce86785da6 Added the XML::Attribute class.
This class will replace the use of raw Hash/String values for attributes in
upcoming commits.
2014-07-16 10:08:11 +02:00
Yorick Peterse e0544959ee Specs for the ancestor-or-self axis. 2014-07-15 09:37:47 +02:00
Yorick Peterse 9a8f53bb49 Use a shared example in the axes evaluation specs. 2014-07-15 09:35:13 +02:00
Yorick Peterse 580856dcf7 Cleaned up XPath specs using a shared example. 2014-07-15 09:34:11 +02:00
Yorick Peterse 30bbd2378e Basic specs for the "ancestor" axis. 2014-07-14 00:11:03 +02:00
Yorick Peterse 56982dd543 Fail early when processing (test) nodes.
If a certain segment yields no nodes the on_path() method should not process any
following segments.
2014-07-12 00:22:18 +02:00
Yorick Peterse be4f4ad744 Trimmed the XPath AST even further.
The excessive use of (path) nodes has been dropped and all parsing conflicts
have been dealt with.
2014-07-12 00:13:25 +02:00
Yorick Peterse c89fb571db Fixed typo in the XPath evaluator's wildcard spec. 2014-07-10 10:02:21 +02:00
Yorick Peterse a61540cfc5 XPath specs for wildcard names + namespaces. 2014-07-09 23:55:09 +02:00
Yorick Peterse 8fbc582547 XPath evaluation for name/namespace wildcards. 2014-07-09 22:09:20 +02:00
Yorick Peterse ed45058983 Basic support for evaluating XPath wildcards. 2014-07-09 20:06:31 +02:00