/*
** $Id: lcode.h,v 1.48.1.1 2007/12/27 13:02:25 roberto Exp $
** Code generator for Lua
** See Copyright Notice in lua.h
*/

#ifndef lcode_h
#define lcode_h

#include "llex.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lparser.h"


/*
** Marks the end of a patch list. It is an invalid value both as an absolute
** address, and as a list link (would link an element to itself).
*/
#define NO_JUMP (-1)


/*
** grep "ORDER OPR" if you change these enums
*/
typedef enum BinOpr {
  OPR_ADD, OPR_SUB, OPR_MUL, OPR_DIV, OPR_MOD, OPR_POW,
  OPR_CONCAT,
  OPR_NE, OPR_EQ,
  OPR_LT, OPR_LE, OPR_GT, OPR_GE,
  OPR_AND, OPR_OR,
  OPR_NOBINOPR
} BinOpr;


typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;


#define getcode(fs,e)	((fs)->f->code[(e)->u.s.info])

#define luaK_codeAsBx(fs,o,A,sBx)	luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)

#define luaK_setmultret(fs,e)	luaK_setreturns(fs, e, LUA_MULTRET)

LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s);
LUAI_FUNC int luaK_numberK (FuncState *fs, lua_Number r);
LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
LUAI_FUNC int luaK_jump (FuncState *fs);
LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
LUAI_FUNC int luaK_getlabel (FuncState *fs);
LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v);
LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_sending_chat_message");
	// Call callbacks
	lua_pushstring(L, message.c_str());
	runCallbacks(1, RUN_CALLBACKS_MODE_OR_SC);
	return readParam<bool>(L, -1);
}

bool ScriptApiClient::on_receiving_message(const std::string &message)
{
	SCRIPTAPI_PRECHECKHEADER

	// Get core.registered_on_chat_messages
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_receiving_chat_message");
	// Call callbacks
	lua_pushstring(L, message.c_str());
	runCallbacks(1, RUN_CALLBACKS_MODE_OR_SC);
	return readParam<bool>(L, -1);
}

void ScriptApiClient::on_damage_taken(int32_t damage_amount)
{
	SCRIPTAPI_PRECHECKHEADER

	// Get core.registered_on_chat_messages
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_damage_taken");
	// Call callbacks
	lua_pushinteger(L, damage_amount);
	runCallbacks(1, RUN_CALLBACKS_MODE_OR_SC);
}

void ScriptApiClient::on_hp_modification(int32_t newhp)
{
	SCRIPTAPI_PRECHECKHEADER

	// Get core.registered_on_chat_messages
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_hp_modification");
	// Call callbacks
	lua_pushinteger(L, newhp);
	runCallbacks(1, RUN_CALLBACKS_MODE_OR_SC);
}

void ScriptApiClient::on_death()
{
	SCRIPTAPI_PRECHECKHEADER

	// Get registered shutdown hooks
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_death");
	// Call callbacks
	runCallbacks(0, RUN_CALLBACKS_MODE_FIRST);
}

void ScriptApiClient::environment_step(float dtime)
{
	SCRIPTAPI_PRECHECKHEADER

	// Get core.registered_globalsteps
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_globalsteps");
	// Call callbacks
	lua_pushnumber(L, dtime);
	try {
		runCallbacks(1, RUN_CALLBACKS_MODE_FIRST);
	} catch (LuaError &e) {
		getClient()->setFatalError(std::string("Client environment_step: ") + e.what() + "\n"
				+ script_get_backtrace(L));
	}
}

void ScriptApiClient::on_formspec_input(const std::string &formname,
	const StringMap &fields)
{
	SCRIPTAPI_PRECHECKHEADER

	// Get core.registered_on_chat_messages
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_formspec_input");
	// Call callbacks
	// param 1
	lua_pushstring(L, formname.c_str());
	// param 2
	lua_newtable(L);
	StringMap::const_iterator it;
	for (it = fields.begin(); it != fields.end(); ++it) {
		const std::string &name = it->first;
		const std::string &value = it->second;
		lua_pushstring(L, name.c_str());
		lua_pushlstring(L, value.c_str(), value.size());
		lua_settable(L, -3);
	}
	runCallbacks(2, RUN_CALLBACKS_MODE_OR_SC);
}

bool ScriptApiClient::on_dignode(v3s16 p, MapNode node)
{
	SCRIPTAPI_PRECHECKHEADER

	const NodeDefManager *ndef = getClient()->ndef();

	// Get core.registered_on_dignode
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_dignode");

	// Push data
	push_v3s16(L, p);
	pushnode(L, node, ndef);

	// Call functions
	runCallbacks(2, RUN_CALLBACKS_MODE_OR);
	return lua_toboolean(L, -1);
}

bool ScriptApiClient::on_punchnode(v3s16 p, MapNode node)
{
	SCRIPTAPI_PRECHECKHEADER

	const NodeDefManager *ndef = getClient()->ndef();

	// Get core.registered_on_punchgnode
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_punchnode");

	// Push data
	push_v3s16(L, p);
	pushnode(L, node, ndef);

	// Call functions
	runCallbacks(2, RUN_CALLBACKS_MODE_OR);
	return readParam<bool>(L, -1);
}

bool ScriptApiClient::on_placenode(const PointedThing &pointed, const ItemDefinition &item)
{
	SCRIPTAPI_PRECHECKHEADER

	// Get core.registered_on_placenode
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_placenode");

	// Push data
	push_pointed_thing(L, pointed, true);
	push_item_definition(L, item);

	// Call functions
	runCallbacks(2, RUN_CALLBACKS_MODE_OR);
	return readParam<bool>(L, -1);
}

bool ScriptApiClient::on_item_use(const ItemStack &item, const PointedThing &pointed)
{
	SCRIPTAPI_PRECHECKHEADER

	// Get core.registered_on_item_use
	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_item_use");

	// Push data
	LuaItemStack::create(L, item);
	push_pointed_thing(L, pointed, true);

	// Call functions
	runCallbacks(2, RUN_CALLBACKS_MODE_OR);
	return readParam<bool>(L, -1);
}

bool ScriptApiClient::on_inventory_open(Inventory *inventory)
{
	SCRIPTAPI_PRECHECKHEADER

	lua_getglobal(L, "core");
	lua_getfield(L, -1, "registered_on_inventory_open");

	std::vector<const InventoryList*> lists = inventory->getLists();
	std::vector<const InventoryList*>::iterator iter = lists.begin();
	lua_createtable(L, 0, lists.size());
	for (; iter != lists.end(); iter++) {
		const char* name = (*iter)->getName().c_str();
		lua_pushstring(L, name);
		push_inventory_list(L, inventory, name);
		lua_rawset(L, -3);
	}

	runCallbacks(1, RUN_CALLBACKS_MODE_OR);
	return readParam<bool>(L, -1);
}

void ScriptApiClient::setEnv(ClientEnvironment *env)
{
	ScriptApiBase::setEnv(env);
}