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For some reason reference to a fixed-size array works in two other places
but not in this one...
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These show up when building with Wcast-align for ARM.
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It now also moves parse result.
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Only happens on GCC 3.4 for some reason.
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name_sentry dtor results in multiple symbol definition errors in MSVC6.
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Since they don't contribute to the resulting value just skip them before
parsing. This matches the behavior of strtol/strtoll and results in more
intuitive behavior.
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Node type enum is not used as an array index anywhere else; the code is not
very readable and the value of this "optimization" is questionable.
The conditions are arranged so that in all normal cases the first comparison
returns true anyway.
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The minneg argument is supposed to be the absolute value of the minimum negative
representable number. In case of two-complement arithmetic, it's the same as the
value itself but it's better to be explicit and negate the argument.
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Share the implementation for different encodings. We still need two functions
because endian_swap on uint8_t is ambiguous...
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Instead of functions with different names (e.g. decode_utf8_block), split
utf_decoder class into multiple classes with ::process static function.
This makes it easier to share code for decoding different encodings.
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This does not affect correctness but makes code more uniform.
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Make sure the looping structure is the same as in decode_utf8_block.
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Instead of calling xml_document public functions just call implementation of
load_buffer_inplace_own. This makes it so we only call reset() once during
load_file/load.
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This matches the format strtol supports.
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This makes conversion significantly faster and removes more CRT dependencies;
in particular, to support long long pugixml only requires the type itself (and
the division operator...).
New implementation is up to 3x faster on short decimal numbers.
Note that unlike the old implementation, new implementation correctly handles
overflow and underflow and clamps the value to the representable range. This
means that there are some behavior changes - e.g. previously as_uint on "-1"
would return INT_MAX instead of 0.
In addition to CRT issues, for platforms with 64-bit long old implementation
incorrectly truncated from long to int or unsigned int, so even if CRT clamped
the values the result would have been incorrect.
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This does not really matter too much but it's better to be consistent.
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Also since this function is only used once and is not defined in regular mode
to avoid warnings this simplifies code a bit.
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Since we use manual integer conversion we know the length of the string.
This makes set_value(int) ~30% faster for 4-digit numbers.
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This makes it possible to avoid calling strlen if we already know the string
size.
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This reduces the amount of non-standard C++ functionality pugixml may be using
by avoiding sprintf with %lld; additionally this implementation is significantly
faster (4-5x) than sprintf, mostly due to avoiding format string parsing and
stream setup that commonly happens in CRT implementations.
This comes at the expense of requiring long long division/remainder operations
if PUGIXML_USE_LONG_LONG is defined which will surely bite me one day.
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Also add PUGIXML_COMPACT to pugiconfig.hpp
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Remove an extra branch.
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Change the expression to reference the array element indirectly. The memory
block can be bigger than the structure so it's invalid to use static data[]
size for bounds checking.
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To be more precise, the memory block is now aligned to be able to reliably
allocate objects with both double and pointer fields. If there is a platform
with a 4-byte double and a 4-byte pointer, the memory block alignment there will
stay the same after this change.
Fixes #48.
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Extract memory page size and block alignment into named constants.
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This makes the code slightly more readable, but more importantly it fixes a
false positive in Clang static analyzer.
Fixes #47.
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Apparently Clang 3.7 implements C++ DR 1748 that makes placement new with null
pointer undefined behavior. Which renders all C++ programs that rely on this
invalid. Which includes pugixml.
This is not very likely to happen in the wild because the allocations that are
subject to this in pugixml are relatively small, but tests break because of
this.
Fix the issue by adding null pointer checks (that are completely redundant in
all current compilers except Clang 3.7 but it's not like there is another
option).
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Work around a name lookup bug by pulling auto_deleter name in the local
scope. We could also move auto_deleter to pugi:: namespace, but that
pollutes it unnecessarily for other compilers.
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This makes get_value_* simpler and also works around DMC compilation issue.
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This makes code more consistent between wchar/utf8 mode.
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Extra argument 'hint' is used to start the attribute lookup; if the attribute
is not found the lookup is restarted from the beginning of the attriubte list.
This allows to optimize attribute lookups if you need to get many attributes
from the node and can make assumptions about the likely ordering. The code is
correct regardless of the order, but it is faster than using vanilla lookups
if the order matches the calling order.
Fixes #30.
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auto_deleter is now used in all modes so we can't exclude it from compilation.
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Now compact_string matches compact_pointer_parent.
Turns out PUGI__UNLIKELY is good at reordering conditions but usually does not
really affect performance. Since MSVC should treat "if" branches as taken and
does not support branch probabilities, don't use them if we don't need to.
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Instead of checking if the object being removed allocated a marker, mark the
marker block as deleted immediately upon allocation. This simplifies the logic
and prevents extra markers from being inserted if we allocate/deallocate the
same node indefinitely.
Also change marker pointer type to uint32_t*.
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First assignment uses a fast path; second assignment uses a specialized
path as well.
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When we deallocate nodes/attributes that allocated the marker we have to
adjust the size accordingly, and dismiss the marker in case it gets
overwritten with something else...
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Header is now just 2 bytes, with optional additonal 4 bytes that are only
allocated for every 85 nodes / 128 attributes.
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