// ------------------------------------------------------------------------------------------------
int ParseTokenAsInt(const Token& t, const char*& err_out)
{
err_out = NULL;
if (t.Type() != TokenType_DATA) {
err_out = "expected TOK_DATA token";
return 0;
}
if(t.IsBinary())
{
const char* data = t.begin();
if (data[0] != 'I') {
err_out = "failed to parse I(nt), unexpected data type (binary)";
return 0;
}
BE_NCONST int32_t ival = SafeParse<int32_t>(data+1, t.end());
AI_SWAP4(ival);
return static_cast<int>(ival);
}
ai_assert(static_cast<size_t>(t.end() - t.begin()) > 0);
const char* out;
const int intval = strtol10(t.begin(),&out);
if (out != t.end()) {
err_out = "failed to parse ID";
return 0;
}
return intval;
}
// ------------------------------------------------------------------------------------------------
// read an array of ints
void ParseVectorDataArray(std::vector<int>& out, const Element& el)
{
out.resize( 0 );
const TokenList& tok = el.Tokens();
if(tok.empty()) {
ParseError("unexpected empty element",&el);
}
if(tok[0]->IsBinary()) {
const char* data = tok[0]->begin(), *end = tok[0]->end();
char type;
uint32_t count;
ReadBinaryDataArrayHead(data, end, type, count, el);
if(!count) {
return;
}
if (type != 'i') {
ParseError("expected int array (binary)",&el);
}
std::vector<char> buff;
ReadBinaryDataArray(type, count, data, end, buff, el);
ai_assert(data == end);
ai_assert(buff.size() == count * 4);
out.reserve(count);
const int32_t* ip = reinterpret_cast<const int32_t*>(&buff[0]);
for (unsigned int i = 0; i < count; ++i, ++ip) {
BE_NCONST int32_t val = *ip;
AI_SWAP4(val);
out.push_back(val);
}
return;
}
const size_t dim = ParseTokenAsDim(*tok[0]);
// see notes in ParseVectorDataArray()
out.reserve(dim);
const Scope& scope = GetRequiredScope(el);
const Element& a = GetRequiredElement(scope,"a",&el);
for (TokenList::const_iterator it = a.Tokens().begin(), end = a.Tokens().end(); it != end; ) {
const int ival = ParseTokenAsInt(**it++);
out.push_back(ival);
}
}
// ------------------------------------------------------------------------------------------------
uint32_t ReadWord(const char* input, const char*& cursor, const char* end)
{
if(Offset(cursor, end) < 4) {
TokenizeError("cannot ReadWord, out of bounds",input, cursor);
}
uint32_t word = *reinterpret_cast<const uint32_t*>(cursor);
AI_SWAP4(word);
cursor += 4;
return word;
}
// ------------------------------------------------------------------------------------------------
uint32_t ReadWord(const char* input, const char*& cursor, const char* end) {
const size_t k_to_read = sizeof( uint32_t );
if(Offset(cursor, end) < k_to_read ) {
TokenizeError("cannot ReadWord, out of bounds",input, cursor);
}
uint32_t word;
::memcpy(&word, cursor, 4);
AI_SWAP4(word);
cursor += k_to_read;
return word;
}
// ------------------------------------------------------------------------------------------------
std::string ParseTokenAsString(const Token& t, const char*& err_out)
{
err_out = NULL;
if (t.Type() != TokenType_DATA) {
err_out = "expected TOK_DATA token";
return "";
}
if(t.IsBinary())
{
const char* data = t.begin();
if (data[0] != 'S') {
err_out = "failed to parse S(tring), unexpected data type (binary)";
return "";
}
// read string length
BE_NCONST int32_t len = SafeParse<int32_t>(data+1, t.end());
AI_SWAP4(len);
ai_assert(t.end() - data == 5 + len);
return std::string(data + 5, len);
}
const size_t length = static_cast<size_t>(t.end() - t.begin());
if(length < 2) {
err_out = "token is too short to hold a string";
return "";
}
const char* s = t.begin(), *e = t.end() - 1;
if (*s != '\"' || *e != '\"') {
err_out = "expected double quoted string";
return "";
}
return std::string(s+1,length-2);
}
