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It's unfortunate that we can even do that...
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1068 99668b35-9821-0410-8761-19e4c4f06640
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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
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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
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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
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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
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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
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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
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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
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1059 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1054 99668b35-9821-0410-8761-19e4c4f06640
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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
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1051 99668b35-9821-0410-8761-19e4c4f06640
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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
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1040 99668b35-9821-0410-8761-19e4c4f06640
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pointer alignment
git-svn-id: https://pugixml.googlecode.com/svn/trunk@1039 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1038 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1035 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1033 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1030 99668b35-9821-0410-8761-19e4c4f06640
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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
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1022 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1020 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1017 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1016 99668b35-9821-0410-8761-19e4c4f06640
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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
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1010 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@1003 99668b35-9821-0410-8761-19e4c4f06640
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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
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@997 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@991 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@988 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@986 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@985 99668b35-9821-0410-8761-19e4c4f06640
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Temp folder is the root folder on Windows; writing to the folder may require administrator rights.
We can't use current folder for temporaries because tests from different configurations can be running
in parallel, but executable folder is always safe since we only run each executable once.
git-svn-id: https://pugixml.googlecode.com/svn/trunk@984 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@982 99668b35-9821-0410-8761-19e4c4f06640
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Introduce a notable behavior change in default parsing mode: documents without a
document element node are now considered invalid. This is technically a breaking change,
however the amount of documents it affects is very small, all parsed data still persists,
and lack of this check results in very confusing behavior in a number of cases.
In order to be able to parse documents without an element node, a fragment parsing flag is
introduced.
Parsing a buffer in fragment mode treats the buffer as a fragment of a valid XML.
As a consequence, top-level PCDATA is added to the tree; additionally, there are no
restrictions on the number of nodes -- so documents without a document element are considered
valid.
Due to the way parsing works internally, load_buffer_inplace occasionally can not preserve
the document contents if it's parsed in a fragment mode. While unfortunate, this problem is
fundamental; since the use case is relatively obscure, hopefully documenting this shortcoming
will be enough.
git-svn-id: https://pugixml.googlecode.com/svn/trunk@980 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@979 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@978 99668b35-9821-0410-8761-19e4c4f06640
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Parsing used to work on a non null-terminated buffer, inserting a fake null terminator to increase performance.
This makes it impossible to implement fragment parsing that preserves PCDATA contents (as witnessed by some
tests for boundary conditions that actually depended on this behavior).
Since almost all uses result in us allocating an internal buffer anyway, the new policy is to make sure all buffers
that are allocated by pugixml are null-terminated - the only exception now is external calls to load_buffer_inplace
that don't trigger encoding conversion.
git-svn-id: https://pugixml.googlecode.com/svn/trunk@977 99668b35-9821-0410-8761-19e4c4f06640
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In case a test sets memory-management functions to perform custom testing and fails midway,
all subsequent tests that rely on custom memory handling (i.e. threshold) can fail unexpectedly.
Setting up the functions before every test fixes this, making all tests self-contained.
git-svn-id: https://pugixml.googlecode.com/svn/trunk@976 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: https://pugixml.googlecode.com/svn/trunk@973 99668b35-9821-0410-8761-19e4c4f06640
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This expands and replaces the Travis-specific makefile by adding more options and correctly tracking header dependencies.
Also add wchar_t mode test to Travis configuration.
git-svn-id: http://pugixml.googlecode.com/svn/trunk@971 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: http://pugixml.googlecode.com/svn/trunk@969 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: http://pugixml.googlecode.com/svn/trunk@963 99668b35-9821-0410-8761-19e4c4f06640
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(autodetection is not implemented yet)
git-svn-id: http://pugixml.googlecode.com/svn/trunk@962 99668b35-9821-0410-8761-19e4c4f06640
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xml_node_iterator in terms of internals
git-svn-id: http://pugixml.googlecode.com/svn/trunk@960 99668b35-9821-0410-8761-19e4c4f06640
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xml_text::as_int. This is effectively a form of strtol with base 0, but without octal support.
git-svn-id: http://pugixml.googlecode.com/svn/trunk@958 99668b35-9821-0410-8761-19e4c4f06640
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git-svn-id: http://pugixml.googlecode.com/svn/trunk@953 99668b35-9821-0410-8761-19e4c4f06640
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of the same size due to pointer-sized alignment
git-svn-id: http://pugixml.googlecode.com/svn/trunk@946 99668b35-9821-0410-8761-19e4c4f06640
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msvc6)
git-svn-id: http://pugixml.googlecode.com/svn/trunk@939 99668b35-9821-0410-8761-19e4c4f06640
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