* more consistent API.
*/
+#include <iostream>
#include <list>
#include <map>
#include <string>
THREAD = LUA_TTHREAD
};
- enum Status
+ enum Result
{
SUCCESS = 0,
YIELD = LUA_YIELD,
/**
* This is the most prominent abstraction on top of the standard Lua API.
- * A Value object represents a value on the stack. More specifically, it
+ * A Slot object represents a value on the stack. More specifically, it
* represents a position on the stack. The distinction is only important
- * when values are moved around on the stack or if the Value represents a
+ * when objects are moved around on the stack or if the Slot represents a
* negative index on the stack (the value of which will change as things are
* pushed onto and popped from the stack).
*/
- struct Value
+ struct Slot
{
/**
* You have direct access to the index of the value on the stack being
/**
- * A default-constructed Value is invalid until a valid Value is
- * assigned to it. The only method that should be called on such a
- * Value is isValid(), otherwise chaos may ensue. In this case, the
- * Value will be invalid even if index is manually changed to a valid
- * index. You have to index the script itself to get a valid Value.
+ * A default-constructed Slot is invalid until a valid Slot is assigned
+ * to it. The only method that should be called on such a Slot is
+ * isValid(), otherwise chaos may ensue. In this case, the Slot will be
+ * invalid even if index is manually changed to a valid index. You have
+ * to index the script itself to get a valid Slot.
*/
- Value(lua_State* s = 0, int i = 0) :
+ Slot(lua_State* s = 0, int i = 0) :
index(i),
- state(s) {}
+ mState(s) {}
/**
* A copied value presently points to the same value, except the real
* copied into the new value object.
*/
- Value(const Value& copy) :
+ Slot(const Slot& copy) :
index(copy.getRealIndex()),
- state(copy.state) {}
+ mState(copy.mState) {}
// check the type of the value
- bool isBoolean() const { return (bool)lua_isboolean(state, index); }
- bool isFunction() const { return (bool)lua_isfunction(state, index); }
- bool isNil() const { return (bool)lua_isnil(state, index); }
- bool isNone() const { return (bool)lua_isnone(state, index); }
- bool isValid() const { return state != 0 && !isNone(); }
- bool isNoneOrNil() const { return (bool)lua_isnoneornil(state, index); }
- bool isNumber() const { return (bool)lua_isnumber(state, index); }
- bool isString() const { return (bool)lua_isstring(state, index); }
- bool isTable() const { return (bool)lua_istable(state, index); }
- bool isThread() const { return (bool)lua_isthread(state, index); }
- bool isData() const { return (bool)lua_isuserdata(state, index); }
- bool isLightData() const { return (bool)lua_islightuserdata(state, index); }
+ bool isBoolean() const { return (bool)lua_isboolean(mState, index); }
+ bool isFunction() const { return (bool)lua_isfunction(mState, index); }
+ bool isNil() const { return (bool)lua_isnil(mState, index); }
+ bool isNone() const { return (bool)lua_isnone(mState, index); }
+ bool isValid() const { return mState != 0 && !isNone(); }
+ bool isNoneOrNil() const { return (bool)lua_isnoneornil(mState, index); }
+ bool isNumber() const { return (bool)lua_isnumber(mState, index); }
+ bool isString() const { return (bool)lua_isstring(mState, index); }
+ bool isTable() const { return (bool)lua_istable(mState, index); }
+ bool isThread() const { return (bool)lua_isthread(mState, index); }
+ bool isData() const { return (bool)lua_isuserdata(mState, index); }
+ bool isLightData() const { return (bool)lua_islightuserdata(mState, index); }
/**
* Check the value and throw an error if its the wrong type. There's a
{
if (type != getType())
{
- luaL_typerror(state, index, lua_typename(state, type));
+ luaL_typerror(mState, index, lua_typename(mState, type));
}
}
void throwError(const char* error)
{
- luaL_argerror(state, index, error);
+ luaL_argerror(mState, index, error);
}
- Value& requireBoolean()
+ Slot& requireBoolean()
{
- if (!isBoolean()) luaL_typerror(state, index, "boolean");
+ if (!isBoolean()) luaL_typerror(mState, index, "boolean");
return *this;
}
- Value& requireNumber()
+ Slot& requireNumber()
{
- if (!isNumber()) luaL_typerror(state, index, "number");
+ if (!isNumber()) luaL_typerror(mState, index, "number");
return *this;
}
- Value& requireString()
+ Slot& requireString()
{
- if (!isString()) luaL_typerror(state, index, "string");
+ if (!isString()) luaL_typerror(mState, index, "string");
return *this;
}
- Value& requireTable()
+ Slot& requireTable()
{
- if (!isTable()) luaL_typerror(state, index, "table");
+ if (!isTable()) luaL_typerror(mState, index, "table");
return *this;
}
- Value& requireFunction()
+ Slot& requireFunction()
{
- if (!isFunction()) luaL_typerror(state, index, "function");
+ if (!isFunction()) luaL_typerror(mState, index, "function");
return *this;
}
- Value& requireData()
+ Slot& requireData()
{
- if (!isData()) luaL_typerror(state, index, "data");
+ if (!isData()) luaL_typerror(mState, index, "data");
return *this;
}
- Value& requireNil()
+ Slot& requireNil()
{
- if (!isNil()) luaL_typerror(state, index, "nil");
+ if (!isNil()) luaL_typerror(mState, index, "nil");
return *this;
}
- Value& requireThread()
+ Slot& requireThread()
{
- if (!isThread()) luaL_typerror(state, index, "thread");
+ if (!isThread()) luaL_typerror(mState, index, "thread");
return *this;
}
Type getType() const
{
- return (Type)lua_type(state, index);
+ return (Type)lua_type(mState, index);
}
/**
std::string getTypeName() const
{
- return std::string(luaL_typename(state, index));
+ return std::string(luaL_typename(mState, index));
}
size_t getLength() const
{
- return lua_objlen(state, index);
+ return lua_objlen(mState, index);
}
int getRealIndex() const
{
- if (index < 0) return lua_gettop(state) + 1 + index;
+ if (index < 0) return lua_gettop(mState) + 1 + index;
else return index;
}
const void* getIdentifier() const
{
- return lua_topointer(state, index);
+ return lua_topointer(mState, index);
}
- bool operator == (const Value& rhs) const
+ bool operator == (const Slot& rhs) const
{
- return (bool)lua_equal(state, index, rhs.index);
+ return (bool)lua_equal(mState, index, rhs.index);
}
- bool operator != (const Value& rhs) const
+ bool operator != (const Slot& rhs) const
{
return !(*this == rhs);
}
- bool operator < (const Value& rhs) const
+ bool operator < (const Slot& rhs) const
{
- return (bool)lua_lessthan(state, index, rhs.index);
+ return (bool)lua_lessthan(mState, index, rhs.index);
}
- bool operator <= (const Value& rhs) const
+ bool operator <= (const Slot& rhs) const
{
return *this < rhs || *this == rhs;
}
- bool operator > (const Value& rhs) const
+ bool operator > (const Slot& rhs) const
{
return !(*this <= rhs);
}
- bool operator >= (const Value& rhs) const
+ bool operator >= (const Slot& rhs) const
{
return !(*this < rhs);
}
operator bool () const
{
- return (bool)lua_toboolean(state, index);
+ return (bool)lua_toboolean(mState, index);
}
- Value& operator = (const Value& rhs)
+ Slot& operator = (const Slot& rhs)
{
rhs.pushCopy();
replaceWithTop();
{
if (isNumber())
{
- value = (T)lua_tointeger(state, index);
+ value = (T)lua_tointeger(mState, index);
return true;
}
return false;
{
if (isNumber())
{
- value = (float)lua_tonumber(state, index);
+ value = (float)lua_tonumber(mState, index);
return true;
}
return false;
{
if (isNumber())
{
- value = (double)lua_tonumber(state, index);
+ value = (double)lua_tonumber(mState, index);
return true;
}
return false;
{
if (isBoolean())
{
- value = (bool)lua_toboolean(state, index);
+ value = (bool)lua_toboolean(mState, index);
return true;
}
return false;
if (isString())
{
size_t size;
- const char* str = lua_tolstring(state, index, &size);
+ const char* str = lua_tolstring(mState, index, &size);
value.assign(str, size);
return true;
}
array.clear();
- Value value(state, -1);
+ Slot value(mState, -1);
int realIndex = getRealIndex();
bool done = false;
for (int i = 1; !done; ++i)
{
- lua_rawgeti(state, realIndex, i);
+ lua_rawgeti(mState, realIndex, i);
T v;
if (value.get(v)) array.push_back(v);
else done = true;
- lua_pop(state, 1);
+ lua_pop(mState, 1);
}
return true;
dictionary.clear();
- Value key(state, -2);
- Value value(state, -1);
+ Slot key(mState, -2);
+ Slot value(mState, -1);
int realIndex = getRealIndex();
- lua_pushnil(state);
- while (lua_next(state, realIndex) != 0)
+ lua_pushnil(mState);
+ while (lua_next(mState, realIndex) != 0)
{
std::string k;
if (!key.isNumber() && key.get(k))
T v;
if (value.get(v)) dictionary[k] = v;
}
- lua_pop(state, 1);
+ lua_pop(mState, 1);
}
- lua_pop(state, 1);
+ lua_pop(mState, 1);
return true;
}
-
/**
* Copy the value and push the copy to the stack.
*/
void pushCopy() const
{
- lua_pushvalue(state, index);
+ lua_pushvalue(mState, index);
}
/**
void replaceWithTop()
{
- lua_replace(state, index);
+ lua_replace(mState, index);
}
void remove()
{
- lua_remove(state, index);
+ lua_remove(mState, index);
}
/**
void insertTopHere()
{
- lua_insert(state, index);
+ lua_insert(mState, index);
}
void pushMetatable() const
{
- lua_getmetatable(state, index);
+ lua_getmetatable(mState, index);
}
void pushField() const
{
- lua_gettable(state, index);
+ lua_gettable(mState, index);
}
void pushField(const std::string& name) const
{
- lua_getfield(state, index, name.c_str());
+ lua_getfield(mState, index, name.c_str());
+ }
+
+ void pushField(size_t index) const
+ {
+ lua_pushinteger(mState, lua_Integer(index));
+ pushField();
}
private:
- lua_State* state;
+ lua_State* mState;
};
if (mState) destroy();
mState = luaL_newstate();
lua_pushlightuserdata(mState, this);
- lua_setfield(mState, LUA_REGISTRYINDEX, "_script_obj");
+ lua_setfield(mState, LUA_REGISTRYINDEX, "Script_hh_Object");
}
}
- Status doString(const std::string& commands)
+ Result doString(const std::string& commands)
{
- return (Status)luaL_dostring(mState, commands.c_str());
+ return (Result)luaL_dostring(mState, commands.c_str());
}
- Status doFile(const std::string& file)
+ Result doFile(const std::string& file)
{
- return (Status)luaL_dofile(mState, file.c_str());
+ return (Result)luaL_dofile(mState, file.c_str());
}
lua_pushthread(mState);
}
- Status resume(int nargs)
+ Result resume(int nargs)
{
- return (Status)lua_resume(mState, nargs);
+ return (Result)lua_resume(mState, nargs);
}
- Status getStatus() const
+ Result getStatus() const
{
- return (Status)lua_status(mState);
+ return (Result)lua_status(mState);
}
int yield(int results)
* Get significant values.
*/
- Value getGlobalTable() const
+ Slot getGlobalTable() const
{
- return Value(mState, GLOBALS);
+ return Slot(mState, GLOBALS);
}
- Value getRegistryTable() const
+ Slot getRegistryTable() const
{
- return Value(mState, REGISTRY);
+ return Slot(mState, REGISTRY);
}
- Value getEnvironmentTable() const
+ Slot getEnvironmentTable() const
{
- return Value(mState, ENVIRONMENT);
+ return Slot(mState, ENVIRONMENT);
}
- Value getTop() const
+ Slot getTop() const
{
- return Value(mState, lua_gettop(mState));
+ return Slot(mState, lua_gettop(mState));
}
/**
/**
- * Concatenates the top-most n values on the stack.
+ * Concatenates the top-most n slots on the stack.
*/
- void concat(int n)
+ void concat(int n = 2)
{
lua_concat(mState, n);
}
lua_xmove(thread.mState, mState, n);
}
- Status pushCode(const std::string& filename)
+ Result pushCode(const std::string& filename)
{
- return (Status)luaL_loadfile(mState, filename.c_str());
+ return (Result)luaL_loadfile(mState, filename.c_str());
}
- Status pushCode(const std::string& name, const char* buffer, size_t size)
+ Result pushCode(const std::string& name, const char* buffer, size_t size)
{
- return (Status)luaL_loadbuffer(mState, buffer, size, name.c_str());
+ return (Result)luaL_loadbuffer(mState, buffer, size, name.c_str());
}
void* pushNewData(size_t size)
* is any number of return values, depending on the callee).
*/
- Status call(int nargs, int nresults = LUA_MULTRET)
+ Result call(int nargs = 0, int nresults = LUA_MULTRET)
{
- return (Status)lua_pcall(mState, nargs, nresults, 0);
+ return (Result)lua_pcall(mState, nargs, nresults, 0);
}
/**
- * Index into the stack to get a Value.
+ * Index into the stack to get a Slot.
*/
- Value operator [] (int index) const
+ Slot operator [] (int index) const
{
- return Value(mState, index);
+ return Slot(mState, index);
}
* Getting and setting fields of a table.
*/
- void get(const std::string& field, int index = GLOBALS) const
+ void pushField(const std::string& field, int index = GLOBALS) const
{
lua_getfield(mState, index, field.c_str());
}
const Function* function = (const Function*)lua_touserdata(state,
lua_upvalueindex(1));
- lua_getfield(state, LUA_REGISTRYINDEX, "_script_obj");
+ lua_getfield(state, LUA_REGISTRYINDEX, "Script_hh_Object");
Script* script = (Script*)lua_touserdata(state, -1);
lua_pop(state, 1);
};
+inline std::ostream& operator << (std::ostream& stream,
+ const Script::Slot& slot)
+{
+ if (slot.isString())
+ {
+ std::string str;
+ slot.get(str);
+ stream << str;
+ }
+ else if (slot.isBoolean())
+ {
+ if (slot) stream << "true";
+ else stream << "false";
+ }
+ else if (slot.isNil())
+ {
+ stream << "nil";
+ }
+ else
+ {
+ stream << slot.getTypeName() << " (" << slot.getIdentifier() << ")";
+ }
+
+ return stream;
+}
+
+
} // namespace Mf
#endif // _MOOF_SCRIPT_HH_
projects / chaz / yoink / blobdiff