180 lines
4.6 KiB
C++
180 lines
4.6 KiB
C++
/*
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* This file is a part of EZC -- Easy templating in C++ library
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* and is distributed under the BSD 3-Clause licence.
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* Author: Tomasz Sowa <t.sowa@ttmath.org>
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*/
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/*
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* Copyright (c) 2007-2021, Tomasz Sowa
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name Tomasz Sowa nor the names of contributors to this
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* project may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef headerfile_ezc_item
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#define headerfile_ezc_item
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#include <vector>
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#include <string>
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namespace Ezc
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{
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struct Item
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{
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enum Type
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{
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item_none, item_container, item_text, item_function, item_if, item_if_def, item_if_not_def,
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item_for, item_else, item_end, item_err, item_include, item_comment,
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item_def, item_def_if_not_set, item_let, item_let_if_not_set,
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item_filter, item_ezc, item_block, item_return
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};
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struct Function
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{
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bool is_function; // if true then we have a function parameter, if false then we have a string parameter
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std::wstring name; // a function or parameter name
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std::vector<std::wstring> fields; // any number of additional fields after a dot e.g. [name.field1.field2]
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std::wstring postfix; // a function can have an additional postfix in its name
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// e.g. [my_function:my_postfix]
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std::vector<Function*> parameters; // if is_function is true then it is a function and can have 'parameters'
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// if is_function is empty then 'parameters' is empty too
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void * fun_cache; // only valid if is_function is true
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Item * item_block;
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void * base_obj;
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int method_index;
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int arg; // used if name is numeric (if no then is equal -1)
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Function()
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{
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is_function = false;
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fun_cache = 0;
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item_block = 0;
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base_obj = 0;
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method_index = -1;
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arg = -1;
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}
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~Function()
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{
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Clear();
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}
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Function(const Function & f)
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{
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operator=(f);
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}
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Function & operator=(const Function & f)
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{
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is_function = f.is_function;
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name = f.name;
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fields = f.fields;
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postfix = f.postfix;
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fun_cache = f.fun_cache;
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item_block = f.item_block;
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base_obj = f.base_obj;
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method_index = f.method_index;
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arg = f.arg;
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for(size_t i=0 ; i<f.parameters.size() ; ++i)
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parameters.push_back(new Function(*f.parameters[i]));
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return *this;
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}
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Function & AddNewParam()
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{
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parameters.push_back(new Function());
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return *parameters.back();
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}
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void Clear()
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{
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for(size_t i=0 ; i<parameters.size() ; ++i)
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delete parameters[i];
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fields.clear();
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parameters.clear();
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name.clear();
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postfix.clear();
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fun_cache = 0;
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item_block = 0;
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base_obj = 0;
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method_index = -1;
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arg = -1;
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is_function = false;
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}
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};
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Type type;
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std::wstring text; // used in: item_text
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std::wstring file_name; // used in: item_include (as a file name)
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std::vector<Item*> item_tab; // childs
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bool has_function; // the [return] statement can be without a function
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Function function;
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Item();
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Item(const Item & i);
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Item & operator=(const Item & i);
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void CopyItemTable(const Item & i);
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~Item();
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Item * AddItem(const Item * porg = 0);
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Item * AddItem(const Item & porg);
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void ClearItems();
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Type LastItemType();
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void DeleteLastItem();
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void Clear();
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void ClearCache();
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private:
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void ClearCache(Item::Function & function);
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};
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} // namespace Ezc
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#endif
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