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POSWIG %ignore doesn't match template with typedef
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  1. POSWIG %ignore doesn't match template with typedef
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    copied!<p>I have a templated Vector (as in a mathematical vector, not a std::vector) class which can be instantiated with a size between 2 and 4. The definition is something like:</p> <pre><code>template &lt;uint32_t Size, typename StorageType&gt; class Vector { public: Vector(StorageType x, StorageType y); Vector(StorageType x, StorageType y, StorageType z); Vector(StorageType x, StorageType y, StorageType z, StorageType w); ... }; </code></pre> <p>In my SWIG file, I want to wrap a version which has a <code>Size</code> of <code>3</code> and a <code>StorageType</code> of <code>int8_t</code> and so I do</p> <pre><code>%module Vector %{ #include "Vector.h" %} %include "stdint.i" %include "Vector.h" %ignore Vector(int8_t, int8_t); %ignore Vector(int8_t, int8_t, int8_t, int8_t); %template(Vector3DInt8) PolyVox::Vector&lt;3,int8_t&gt;; </code></pre> <p>But it fails to <code>%ignore</code> the requested constructors.</p> <p>It seems that SWIG, inside the <code>%template</code> macro automatically 'strips off' typedefs from template parameters and so <code>%template(Vector3DInt8) PolyVox::Vector&lt;3,int8_t&gt;;</code> actually gets converted to <code>%template(Vector3DInt8) PolyVox::Vector&lt;3,unsigned char&gt;;</code>. Because of this, the <code>%ignore</code> doesn't match since <code>unsigned char</code> doesn't match <code>int8_t</code>.</p> <p>If I add a <code>static_assert()</code> inside one of the functions I want to be ignored, I get:</p> <pre><code>source/Vector.inl: In constructor ‘Vector&lt;Size, StorageType&gt;::Vector(StorageType, StorageType) [with unsigned int Size = 3u, StorageType = signed char]’: build/PolyVoxCorePYTHON_wrap.cxx:6446:100: instantiated from here source/Vector.inl:56:3: error: static assertion failed: "This constructor should only be used for vectors with two elements." </code></pre> <p>I've also tried to use <code>-notemplatereduce</code> but it seems to have no effect.</p> <p>Is there a way to get SWIG to correctly ignore the unwanted constructors?</p> <p>Edit: I'm using GCC 4.5 with SWIG 2.0.8</p> <p>Edit 2: Added <code>stdint.i</code> to <code>.i</code> file as it is needed for Python typemaps. Without the <code>stdint.i</code>, the <code>%ignore</code> works correctly but it is needed to actually use the bindings in Python.</p>
 

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