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2014-11-17Rename xml_document::load to load_stringArseny Kapoulkine
This should completely eliminate the confusion between load and load_file. Of course, for compatibility reasons we have to preserve the old variant - it will be deprecated in a future version and subsequently removed.
2014-11-17tests: Don't use /dev/ttyArseny Kapoulkine
The behavior on OSX is different - we don't get a I/O error so the test is useless.
2014-11-05Fix xml_node::offset_debug for corner casesArseny Kapoulkine
Computed offsets for documents with nodes that were added using append_buffer or newly appended nodes without name/value information were invalid.
2014-11-03:Merge remote-tracking branch 'upstream/master'Matthias Loy
2014-11-03tests: Add more XPath mod testsArseny Kapoulkine
2014-11-02Fix undefined behavior while calling memcpyArseny Kapoulkine
Calling memcpy(x, 0, 0) is technically undefined (although it should usually be a no-op).
2014-11-01tests: Improve test coverageArseny Kapoulkine
2014-10-30load_buffer_impl always checks if buffer is valid pointer and size > 0mloy
added some tests to force invalid buffer and size = 0
2014-10-27Optimize node printing by using raw pointersArseny Kapoulkine
This lets us do fewer null pointer checks (making printing 2% faster with -O3) and removes a lot of function calls (making printing 20% faster with -O0).
2014-10-27XPath: Optimize [position()=expr] and [last()]Arseny Kapoulkine
To get more benefits from constant predicate/filter optimization we rewrite [position()=expr] predicates into [expr] for numeric expressions. Right now the rewrite is only for entire expressions - it may be beneficial to split complex expressions like [position()=constant and expr] into [constant][expr] but that is more complicated. last() does not depend on the node set contents so is "constant" as far as our optimization is concerned so we can evaluate it once.
2014-10-26XPath: Optimize constant filters/predicatesArseny Kapoulkine
If a filter/predicate expression is a constant, we don't need to evaluate it for every nodeset element - we can evaluate it once and pick the right element or keep/discard the entire collection. If the expression is 1, we can early out on first node when evaluating the node set - queries like following::item[1] are now significantly faster. Additionally this change refactors filters/predicates to have additional metadata describing the expression type in _test field that is filled during optimization. Note that predicate_constant selection right now is very simple (but captures most common use cases except for maybe [last()]).
2014-10-26tests: Remove git2svn helper script!Arseny Kapoulkine
2014-10-26tests: Add a way for tests to verify allocation failureArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1081 99668b35-9821-0410-8761-19e4c4f06640
2014-10-25Fix node copying for some out of memory casesArseny Kapoulkine
A page can fail to allocate during attribute creation; this case was not previously handled. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1080 99668b35-9821-0410-8761-19e4c4f06640
2014-10-24tests: Fix test failure in PUGIXML_WCHAR_MODEArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1077 99668b35-9821-0410-8761-19e4c4f06640
2014-10-24tests: Add even more coverage testsArseny Kapoulkine
Also fix MSVC6 compilation (make convertions to function pointers explicit). git-svn-id: https://pugixml.googlecode.com/svn/trunk@1076 99668b35-9821-0410-8761-19e4c4f06640
2014-10-23tests: Add more tests for better coverageArseny Kapoulkine
More tests for out-of-memory and other edge conditions git-svn-id: https://pugixml.googlecode.com/svn/trunk@1075 99668b35-9821-0410-8761-19e4c4f06640
2014-10-23tests: Improve test coverageArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1074 99668b35-9821-0410-8761-19e4c4f06640
2014-10-21tests: Fix PUGIXML_WCHAR_MODE compilationArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1071 99668b35-9821-0410-8761-19e4c4f06640
2014-10-21tests: Assert on out-of-memory in testsArseny Kapoulkine
This should never happen but can improve debugging experience for work-in-progress changes since that avoids memcpy() into negative memory space (debugger can't backtrace from failed memcpy since it does not set up the stack frame). git-svn-id: https://pugixml.googlecode.com/svn/trunk@1070 99668b35-9821-0410-8761-19e4c4f06640
2014-10-21XPath: Make sure step_push is called with valid nodesArseny Kapoulkine
Some steps relied on step_push rejecting null inputs; this is no longer the case. Additionally stepping now more rigorously filters null inputs. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1069 99668b35-9821-0410-8761-19e4c4f06640
2014-10-20tests: Add a coverage test for unspecified_boolArseny Kapoulkine
It's unfortunate that we can even do that... git-svn-id: https://pugixml.googlecode.com/svn/trunk@1068 99668b35-9821-0410-8761-19e4c4f06640
2014-10-20XPath: Introduce _first/_any set evaluation modesArseny Kapoulkine
Sometimes when evaluating the node set we don't need the entire set and only need the first element in docorder or any element. In the absence of iterator support we can still use this information to short-circuit traversals. This does not have any effect on straightforward node collection queries, but frequently improves performance of complex queries with predicates etc. XMark benchmark gets 15x faster with some queries enjoying 100x speedup on 10 Mb dataset due to a significant complexity improvement. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1067 99668b35-9821-0410-8761-19e4c4f06640
2014-10-19XPath: Rename xml_node::select_single_node to ::select_nodeArseny Kapoulkine
select_node is shorter and mistyping nodes as node or vice versa should not lead to any issues since return types are substantially different. select_single_node method still works and will be deprecated with an attribute and removed at some point. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1065 99668b35-9821-0410-8761-19e4c4f06640
2014-10-19XPath: Introduce xpath_query::evaluate_nodeArseny Kapoulkine
This method is equivalent to xml_node::select_single_node. This makes select_single_node faster in certain cases by avoiding an allocation and - more importantly - paves the way for future step optimizations. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1064 99668b35-9821-0410-8761-19e4c4f06640
2014-10-18XPath: Extend the descendant-or-self optimizationArseny Kapoulkine
Use descendant-or-self::node() transformation for self, descendant and descendant-or-self axis. Self axis should be semi-frequent; descendant axes should not really be used with // but if they ever are the complexity of the step becomes quadratic so it's better to optimize this if possible. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1063 99668b35-9821-0410-8761-19e4c4f06640
2014-10-16tests: Disable tests that rely on ceil() on CLRArseny Kapoulkine
CLR x64 JIT does not implement ceil() properly (ceil(-0.1) returns positive zero instead of negative zero). Disable the relevant portions of tests so that everything else is green... git-svn-id: https://pugixml.googlecode.com/svn/trunk@1062 99668b35-9821-0410-8761-19e4c4f06640
2014-10-16XPath: Optimize attribute axis lookupArseny Kapoulkine
When looking for an attribute by name, finding the first attribute means we can stop looking since attribute names are unique. This makes some queries faster by 40%. Another very common pattern in XPath queries is finding an attribute with a specified value using a predicate (@name = 'value'). While we perform an optimal amount of traversal in that case, there is a substantial overhead with evaluating the nodes, saving and restoring the stack state, pushing the attribute node into a set, etc. Detecting this pattern allows us to use optimized code, resulting in up to 2x speedup for some queries. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1061 99668b35-9821-0410-8761-19e4c4f06640
2014-10-15XPath: Fix optimization bug with //name[last()]Arseny Kapoulkine
The actual condition for the optimization is invariance from context list -- this includes both position() and last(). Instead of splitting the posinv concept just include last() into non-posinv expressions - this requires sorting for boolean predicates that depend on last() and do not depend on position(). These cases should be very rare. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1060 99668b35-9821-0410-8761-19e4c4f06640
2014-10-14tests: Add a test for printing comments that contain --Arseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1059 99668b35-9821-0410-8761-19e4c4f06640
2014-10-05tests: Add XPath sorting testArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1054 99668b35-9821-0410-8761-19e4c4f06640
2014-10-05XPath: Implement optimized translate()Arseny Kapoulkine
translate() with constant arguments now uses a 128-byte table and a table lookup instead of searching characters in the source string. The table is generated during query optimization. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1052 99668b35-9821-0410-8761-19e4c4f06640
2014-10-05tests: Add XPath sorting tests and a simple test for numeric predicatesArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1051 99668b35-9821-0410-8761-19e4c4f06640
2014-10-03tests: Fix MSVC6 compilationArseny Kapoulkine
Also fixes PUGIXML_NO_STL compilation and makes it possible to build with any version of new Windows SDK. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1044 99668b35-9821-0410-8761-19e4c4f06640
2014-10-02tests: Add a test for out-of-memory during copyArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1040 99668b35-9821-0410-8761-19e4c4f06640
2014-10-02tests: Add a test to verify that xml_document object works with any valid ↵Arseny Kapoulkine
pointer alignment git-svn-id: https://pugixml.googlecode.com/svn/trunk@1039 99668b35-9821-0410-8761-19e4c4f06640
2014-10-02tests: Add missing tests to increase code coverageArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1038 99668b35-9821-0410-8761-19e4c4f06640
2014-10-01tests: Add XPath sorting tests for move/append_bufferArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1035 99668b35-9821-0410-8761-19e4c4f06640
2014-10-01tests: Add tests for copyless copy and related potential bugsArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1033 99668b35-9821-0410-8761-19e4c4f06640
2014-10-01tests: Fix allocator.cpp indentationArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1030 99668b35-9821-0410-8761-19e4c4f06640
2014-09-28tests: Add a test for stackless copyArseny Kapoulkine
This test has previously caused a stack overflow on x86/MSVC. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1028 99668b35-9821-0410-8761-19e4c4f06640
2014-09-23tests: Add one more XPath optimization testArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1022 99668b35-9821-0410-8761-19e4c4f06640
2014-09-23tests: More XPath testsArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1020 99668b35-9821-0410-8761-19e4c4f06640
2014-09-21tests: Fix PUGIXML_WCHAR_MODE buildArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1017 99668b35-9821-0410-8761-19e4c4f06640
2014-09-21tests: Add test for custom indentation stringsArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1016 99668b35-9821-0410-8761-19e4c4f06640
2014-09-21tests: Add a test for stackless write.Arseny Kapoulkine
This test previously caused a stack overflow on x86/MSVC. git-svn-id: https://pugixml.googlecode.com/svn/trunk@1015 99668b35-9821-0410-8761-19e4c4f06640
2014-09-12tests: Add git-svn reviving scriptArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1010 99668b35-9821-0410-8761-19e4c4f06640
2014-08-10tests: Add tests for node movementArseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1003 99668b35-9821-0410-8761-19e4c4f06640
2014-06-01Improve XPath allocator performanceArseny Kapoulkine
When allocating new pages, make sure that the page has at least 1/4 of the base page size free. This makes sure that we can do small allocations after big allocations (i.e. huge node lists) without doing a heap alloc. This is important because XPath stack code always reclaims extra pages after evaluating sub-expressions, so allocating a small chunk of memory and then rolling the state back is a common case (filtering a node list using a predicate usually does this). A better solution involves smarter allocation rollback strategy, but the implemented solution is simple and practical. git-svn-id: https://pugixml.googlecode.com/svn/trunk@999 99668b35-9821-0410-8761-19e4c4f06640
2014-04-02tests: Fix Mac OS X compilation.Arseny Kapoulkine
git-svn-id: https://pugixml.googlecode.com/svn/trunk@997 99668b35-9821-0410-8761-19e4c4f06640
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