static Prototype* LoadBinary(lua_State* L, Input* input, const char* name)
{
Header header;
size_t length = Input_ReadBlock(input, &header, sizeof(header));
if (length < sizeof(Header))
{
return NULL;
}
// Check that the buffer is a compiled Lua chunk.
if (header.magic[0] != '\033')
{
return NULL;
}
// Check for compatible platform
if (header.endianness != 1 ||
header.intSize != sizeof(int) ||
header.sizetSize != sizeof(size_t) ||
header.numberSize != sizeof(lua_Number))
{
return NULL;
}
char* data = Input_Read(input, &length);
Prototype* prototype = Prototype_Create(L, data, length, name);
Free(L, data, length);
return prototype;
}
Prototype* Function_CreatePrototype(lua_State* L, Function* function, String* source)
{
int convertedCodeSize = Prototype_GetConvertedCodeSize( function->code, function->codeSize );
Prototype* prototype = Prototype_Create(
L,
function->codeSize,
convertedCodeSize,
function->numConstants,
function->numFunctions,
function->numUpValues);
PushPrototype(L, prototype);
// Store the up values.
memcpy(prototype->upValue, function->upValue, sizeof(String*) * function->numUpValues);
// Store the code.
memcpy(prototype->code, function->code, function->codeSize * sizeof(Instruction));
// Store the source information.
prototype->source = source;
Gc_IncrementReference(&L->gc, prototype, prototype->source);
memcpy(prototype->sourceLine, function->sourceLine, function->codeSize * sizeof(int));
// Store the functions.
for (int i = 0; i < function->numFunctions; ++i)
{
prototype->prototype[i] = Function_CreatePrototype(L, function->function[i], source);
Gc_IncrementReference(&L->gc, prototype, prototype->prototype[i]);
}
// Store the constants.
Value key;
SetNil(&key);
Table* constants = function->constants;
const Value* value;
while (value = Table_Next(L, constants, &key))
{
int i;
if (!Value_GetIsInteger(value, &i))
{
ASSERT(0);
}
if (Value_GetIsTable(&key) && key.table == constants)
{
// The table itself is used to indicate nil values since nil values
// cannot be saved in the table.
SetNil(&prototype->constant[i]);
}
else
{
prototype->constant[i] = key;
}
Gc_IncrementReference(&L->gc, prototype, &prototype->constant[i]);
}
prototype->varArg = function->varArg;
prototype->numParams = function->numParams;
prototype->maxStackSize = function->maxStackSize;
prototype->numUpValues = function->numUpValues;
prototype->lineDefined = 0;
prototype->lastLineDefined = 0;
//PrintFunction(prototype);
ASSERT( (L->stackTop - 1)->object == prototype );
Pop(L, 1);
return prototype;
}
