text: #pragma once
  
  
  #include "engine/array.h"
  #include "engine/hash_map.h"
  #include "engine/lumix.h"
  #include <cstring>
  
  
  namespace Lumix
  {
  
  
  class Animation;
  struct IAllocator;
  class OutputBlob;
  
  
  namespace Anim
  {
  
  
  typedef HashMap<u32, Animation*> AnimSet;
  
  
  struct RunningContext
  {
  	float time_delta;
  	u8* input;
  	IAllocator* allocator;
  	struct ComponentInstance* current;
  	struct Edge* edge;
  	AnimSet* anim_set;
  	OutputBlob* event_stream;
  	ComponentHandle controller;
  };
  
  
  
  struct InputDecl
  {
  	enum Type : int
  	{
  		// don't change order
  		FLOAT,
  		INT,
  		BOOL,
  		EMPTY
  	};
  
  	struct Constant
  	{
  		Type type = EMPTY;
  		union
  		{
  			float f_value;
  			int i_value;
  			bool b_value;
  		};
  		char name[32];
  	};
  
  	struct Input
  	{
  		Type type = EMPTY;
  		int offset;
  		char name[32];
  	};
  
  	Input inputs[32];
  	int inputs_count = 0;
  	Constant constants[32];
  	int constants_count = 0;
  
  
  	int inputFromLinearIdx(int idx) const
  	{
  		for (int i = 0; i < lengthOf(inputs); ++i)
  		{
  			if (inputs[i].type == EMPTY) continue;
  			if (idx == 0) return i;
  			--idx;
  		}
  		ASSERT(false);
  		return -1;
  	}
  
  
  	int inputToLinearIdx(int idx) const
  	{
  		int linear = 0;
  		for (int i = 0; i < lengthOf(inputs); ++i)
  		{
  			if (i == idx) return inputs[i].type == EMPTY ? -1 : linear;
  			if (inputs[i].type == EMPTY) continue;
  			++linear;
  		}
  		return -1;
  	}
  
  
  	int getSize() const
  	{
  		if (inputs_count == 0) return 0;
  		int size = 0;
  		for (const auto& input : inputs)
  		{
  			if(input.type != EMPTY) size = Math::maximum(size, input.offset + getSize(input.type));
  		}
  		return size;
  	}
  
  	int getSize(Type type) const
  	{
  		switch (type)
  		{
  			case FLOAT: return sizeof(float);
  			case INT: return sizeof(int);
  			case BOOL: return sizeof(bool);
  			default: ASSERT(false); return 1;
  		}
  	}
  
  	void recalculateOffsets()
  	{
  		if (inputs_count == 0) return;
  		int last_offset = 0;
  		for(auto& input : inputs)
  		{ 
  			if (input.type == EMPTY) continue;
  			input.offset = last_offset;
  			last_offset += getSize(input.type);
  		}
  	}
  
  	int getInputIdx(const char* name, int size) const
  	{
  		for (int i = 0; i < inputs_count; ++i)
  		{
  			if (strncmp(inputs[i].name, name, size) == 0) return i;
  		}
  		return -1;
  	}
  
  
  	int getConstantIdx(const char* name, int size) const
  	{
  		for (int i = 0; i < lengthOf(constants); ++i)
  		{
  			if (constants[i].type != Type::EMPTY && strncmp(constants[i].name, name, size) == 0) return i;
  		}
  		return -1;
  	}
  };
  
  
  struct Condition
  {
  	Condition(IAllocator& allocator);
  
  	bool operator()(RunningContext& rc);
  	bool compile(const char* expression, InputDecl& decl);
  
  	Array<u8> bytecode;
  };
  
  
  } // namespace Anim
  
  
  } // namespace Lumix