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<div class="title">Using namespaces </div> </div>
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<div class="textblock"><p>Namespaces can be used to group related functions and other entities together. Doing so avoids potential conflicts with other entities that happen to use the same name, but is otherwise unrelated.</p>
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<p>Namespaces can be used in the application registered interface, as well as in the <a class="el" href="doc_global_namespace.html">scripts</a>.</p>
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<h1><a class="anchor" id="doc_adv_namespace_reg"></a>
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Registering the interface with namespaces</h1>
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<p>To register a function, or other entity in a specific namespace, the application should first call the method <a class="el" href="classas_i_script_engine.html#a605f114814f1f64804c04391816d948b">SetDefaultNamespace</a> to define the desired namespace. After that the registration follows the normal procedure as described in the <a class="el" href="doc_register_api_topic.html">chapter on registering the interface</a>.</p>
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<div class="fragment"><div class="line"><span class="keywordtype">void</span> RegisterInNamespace(<a class="code" href="classas_i_script_engine.html">asIScriptEngine</a> *engine)</div>
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<div class="line">{</div>
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<div class="line"> <span class="keywordtype">int</span> r;</div>
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<div class="line"> </div>
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<div class="line"> <span class="comment">// Register the type and function in the namespace</span></div>
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<div class="line"> r = engine-><a class="code" href="classas_i_script_engine.html#a605f114814f1f64804c04391816d948b">SetDefaultNamespace</a>(<span class="stringliteral">"myspace"</span>); assert( r >= 0 );</div>
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<div class="line"> r = engine-><a class="code" href="classas_i_script_engine.html#a29c6c087c8c5b5cdb6271cfd161cc5a6">RegisterObjectType</a>(<span class="stringliteral">"mytype"</span>, 0, <a class="code" href="angelscript_8h.html#a855d86fa9ee15b9f75e553ee376b5c7aa9450e038342b36c745858d2e5ae4b861">asOBJ_REF</a>); assert( r >= 0 );</div>
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<div class="line"> r = engine-><a class="code" href="classas_i_script_engine.html#a2f84b9b51733f22c68b8448b02c2f1c7">RegisterGlobalFunction</a>(<span class="stringliteral">"void myfunc()"</span>, <a class="code" href="angelscript_8h.html#a78f8f2c7f1c88b12e74a5ac47b4184ae">asFUNCTION</a>(myfunc), <a class="code" href="angelscript_8h.html#a3ec92ea3c4762e44c2df788ceccdd1e4a68ae43cc91cdfc3fa4590c9e6164e4f4">asCALL_CDECL</a>); assert( r >= 0 );</div>
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<div class="line">}</div>
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</div><!-- fragment --><p>If desired nested namespaces can also be used by separating them with the scoping token, ::, e.g. SetDefaultNamespace("outer::inner");</p>
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<h1><a class="anchor" id="doc_adv_namespace_enum"></a>
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Finding entities in namespaces</h1>
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<p>As namespaces allow multiple declarations with the same signature, it is necessary to specify in which namespace a search for an entity is to be done. This is also done with the SetDefaultNamespace method. This applies to both the <a class="el" href="classas_i_script_engine.html#a605f114814f1f64804c04391816d948b">engine</a> and the <a class="el" href="classas_i_script_module.html#ab8629af79cee8212d0d244314d36f42a">module</a> interfaces.</p>
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<div class="fragment"><div class="line"><span class="keywordtype">void</span> FindFuncInNamespace(<a class="code" href="classas_i_script_module.html">asIScriptModule</a> *module)</div>
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<div class="line">{</div>
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<div class="line"> <span class="keywordtype">int</span> r;</div>
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<div class="line"> </div>
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<div class="line"> <span class="comment">// Look for the function in the namespace, i.e. myspace::myfunc</span></div>
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<div class="line"> r = module-><a class="code" href="classas_i_script_module.html#ab8629af79cee8212d0d244314d36f42a">SetDefaultNamespace</a>(<span class="stringliteral">"myspace"</span>); assert( r >= 0 );</div>
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<div class="line"> <a class="code" href="classas_i_script_function.html">asIScriptFunction</a> *func1 = module-><a class="code" href="classas_i_script_module.html#a81d727c9677b683942b6087df4ce95ad">GetFunctionByName</a>(<span class="stringliteral">"myfunc"</span>);</div>
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<div class="line"> </div>
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<div class="line"> <span class="comment">// When searching for a matching declaration the default namespace is also</span></div>
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<div class="line"> <span class="comment">// used unless an explicit namespace is given in the declaration itself.</span></div>
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<div class="line"> <a class="code" href="classas_i_script_function.html">asIScriptFunction</a> *funcA = module-><a class="code" href="classas_i_script_module.html#ab4754d55d8667aefbed135b4794d461b">GetFunctionByDecl</a>(<span class="stringliteral">"void myfunc()"</span>);</div>
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<div class="line"> <a class="code" href="classas_i_script_function.html">asIScriptFunction</a> *funcB = module-><a class="code" href="classas_i_script_module.html#ab4754d55d8667aefbed135b4794d461b">GetFunctionByDecl</a>(<span class="stringliteral">"void myspace::myfunc()"</span>);</div>
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<div class="line"> </div>
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<div class="line"> assert( funcA == funcB );</div>
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<div class="line">}</div>
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</div><!-- fragment --> </div></div><!-- contents -->
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</div><!-- PageDoc -->
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</div><!-- doc-content -->
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<div class="ttc" id="aclassas_i_script_module_html_ab4754d55d8667aefbed135b4794d461b"><div class="ttname"><a href="classas_i_script_module.html#ab4754d55d8667aefbed135b4794d461b">asIScriptModule::GetFunctionByDecl</a></div><div class="ttdeci">virtual asIScriptFunction * GetFunctionByDecl(const char *decl) const =0</div><div class="ttdoc">Returns the function by its declaration.</div></div>
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<div class="ttc" id="aclassas_i_script_engine_html_a29c6c087c8c5b5cdb6271cfd161cc5a6"><div class="ttname"><a href="classas_i_script_engine.html#a29c6c087c8c5b5cdb6271cfd161cc5a6">asIScriptEngine::RegisterObjectType</a></div><div class="ttdeci">virtual int RegisterObjectType(const char *obj, int byteSize, asDWORD flags)=0</div><div class="ttdoc">Registers a new object type.</div></div>
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<div class="ttc" id="aangelscript_8h_html_a855d86fa9ee15b9f75e553ee376b5c7aa9450e038342b36c745858d2e5ae4b861"><div class="ttname"><a href="angelscript_8h.html#a855d86fa9ee15b9f75e553ee376b5c7aa9450e038342b36c745858d2e5ae4b861">asOBJ_REF</a></div><div class="ttdeci">@ asOBJ_REF</div><div class="ttdoc">A reference type.</div><div class="ttdef"><b>Definition:</b> angelscript.h:250</div></div>
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<div class="ttc" id="aclassas_i_script_engine_html_a605f114814f1f64804c04391816d948b"><div class="ttname"><a href="classas_i_script_engine.html#a605f114814f1f64804c04391816d948b">asIScriptEngine::SetDefaultNamespace</a></div><div class="ttdeci">virtual int SetDefaultNamespace(const char *nameSpace)=0</div><div class="ttdoc">Sets the current default namespace for registrations and searches.</div></div>
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<div class="ttc" id="aclassas_i_script_engine_html"><div class="ttname"><a href="classas_i_script_engine.html">asIScriptEngine</a></div><div class="ttdoc">The engine interface.</div><div class="ttdef"><b>Definition:</b> angelscript.h:1092</div></div>
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<div class="ttc" id="aclassas_i_script_module_html_a81d727c9677b683942b6087df4ce95ad"><div class="ttname"><a href="classas_i_script_module.html#a81d727c9677b683942b6087df4ce95ad">asIScriptModule::GetFunctionByName</a></div><div class="ttdeci">virtual asIScriptFunction * GetFunctionByName(const char *name) const =0</div><div class="ttdoc">Returns the function by its name.</div></div>
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<div class="ttc" id="aclassas_i_script_engine_html_a2f84b9b51733f22c68b8448b02c2f1c7"><div class="ttname"><a href="classas_i_script_engine.html#a2f84b9b51733f22c68b8448b02c2f1c7">asIScriptEngine::RegisterGlobalFunction</a></div><div class="ttdeci">virtual int RegisterGlobalFunction(const char *declaration, const asSFuncPtr &funcPointer, asDWORD callConv, void *auxiliary=0)=0</div><div class="ttdoc">Registers a global function.</div></div>
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<div class="ttc" id="aangelscript_8h_html_a78f8f2c7f1c88b12e74a5ac47b4184ae"><div class="ttname"><a href="angelscript_8h.html#a78f8f2c7f1c88b12e74a5ac47b4184ae">asFUNCTION</a></div><div class="ttdeci">#define asFUNCTION(f)</div><div class="ttdoc">Returns an asSFuncPtr representing the function specified by the name.</div><div class="ttdef"><b>Definition:</b> angelscript.h:675</div></div>
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<div class="ttc" id="aclassas_i_script_function_html"><div class="ttname"><a href="classas_i_script_function.html">asIScriptFunction</a></div><div class="ttdoc">The interface for a script function description.</div><div class="ttdef"><b>Definition:</b> angelscript.h:3823</div></div>
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<div class="ttc" id="aclassas_i_script_module_html"><div class="ttname"><a href="classas_i_script_module.html">asIScriptModule</a></div><div class="ttdoc">The interface to the script modules.</div><div class="ttdef"><b>Definition:</b> angelscript.h:2218</div></div>
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<div class="ttc" id="aangelscript_8h_html_a3ec92ea3c4762e44c2df788ceccdd1e4a68ae43cc91cdfc3fa4590c9e6164e4f4"><div class="ttname"><a href="angelscript_8h.html#a3ec92ea3c4762e44c2df788ceccdd1e4a68ae43cc91cdfc3fa4590c9e6164e4f4">asCALL_CDECL</a></div><div class="ttdeci">@ asCALL_CDECL</div><div class="ttdoc">A cdecl function.</div><div class="ttdef"><b>Definition:</b> angelscript.h:226</div></div>
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<div class="ttc" id="aclassas_i_script_module_html_ab8629af79cee8212d0d244314d36f42a"><div class="ttname"><a href="classas_i_script_module.html#ab8629af79cee8212d0d244314d36f42a">asIScriptModule::SetDefaultNamespace</a></div><div class="ttdeci">virtual int SetDefaultNamespace(const char *nameSpace)=0</div><div class="ttdoc">Sets the default namespace that should be used in the following calls.</div></div>
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<li class="footer">Generated on Sat Dec 5 2020 23:20:24 for AngelScript by
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.18 </li>
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