/*
* Internal buffer looks like this.
* num[0] op[0] num[1] op[1] num[2]
* If priority of op[0] is higher than op[1], (num[0] op[0] num[1]) is computed,
* otherwise (num[1] op[1] num[2]) is computed.
* Then, the next op and num is read from the script.
* Num is an immediate value, a variable or a bracketed expression.
*/
void ScriptHandler::readNextOp(const char** buf, int* op, int* num)
{
bool minus_flag = false;
SKIP_SPACE(*buf);
const char* buf_start = *buf;
if (op) {
if ((*buf)[0] == '+') *op = OP_PLUS;
else if ((*buf)[0] == '-') *op = OP_MINUS;
else if ((*buf)[0] == '*') *op = OP_MULT;
else if ((*buf)[0] == '/') *op = OP_DIV;
else if ((*buf)[0] == 'm'
&& (*buf)[1] == 'o'
&& (*buf)[2] == 'd'
&& ((*buf)[3] == ' '
|| (*buf)[3] == '\t'
|| (*buf)[3] == '$'
|| (*buf)[3] == '%'
|| (*buf)[3] == '?'
|| ((*buf)[3] >= '0' && (*buf)[3] <= '9')))
*op = OP_MOD;
else {
*op = OP_INVALID;
return;
}
if (*op == OP_MOD) *buf += 3;
else (*buf)++;
SKIP_SPACE(*buf);
}
else {
if ((*buf)[0] == '-') {
minus_flag = true;
(*buf)++;
SKIP_SPACE(*buf);
}
}
if ((*buf)[0] == '(') {
(*buf)++;
*num = parseIntExpression(buf);
if (minus_flag) *num = -*num;
SKIP_SPACE(*buf);
if ((*buf)[0] != ')') errorAndExit(") is not found.");
(*buf)++;
}
else {
*num = parseInt(buf);
if (minus_flag) *num = -*num;
if (current_variable.type == VAR_NONE) {
if (op) *op = OP_INVALID;
*buf = buf_start;
}
}
}
int ScriptHandler::readInt()
{
string_buffer.trunc(0);
end_status = END_NONE;
current_variable.type = VAR_NONE;
current_script = next_script;
SKIP_SPACE(current_script);
const char* buf = current_script;
int ret = parseIntExpression(&buf);
next_script = checkComma(buf);
return ret;
}
int StereotypeDefinitionParser::parseIntExpression()
{
Token token;
token = d->m_scanner->read();
if (token.type() == Token::TokenOperator && token.subtype() == OPERATOR_MINUS) {
return -parseIntExpression();
} else {
bool ok = false;
if (token.type() == Token::TokenInteger) {
int value = token.text().toInt(&ok);
QMT_CHECK(ok);
return value;
} else {
throw StereotypeDefinitionParserError(QStringLiteral("Expected integer constant."), token.sourcePos());
}
}
}
ScriptHandler::array_ref ScriptHandler::parseArray(const char** buf)
{
SKIP_SPACE(*buf);
(*buf)++; // skip '?'
int no = parseInt(buf);
SKIP_SPACE(*buf);
h_index_t indices;
while (**buf == '[') {
(*buf)++;
indices.push_back(parseIntExpression(buf));
SKIP_SPACE(*buf);
if (**buf != ']') errorAndExit("parseArray: no ']' is found.");
(*buf)++;
}
return std::make_pair(no, indices);
}
int ScriptHandler::parseArray( char **buf, struct ArrayVariable &array )
{
SKIP_SPACE( *buf );
(*buf)++; // skip '?'
int no = parseInt( buf );
SKIP_SPACE( *buf );
array.num_dim = 0;
while ( **buf == '[' ){
(*buf)++;
array.dim[array.num_dim] = parseIntExpression(buf);
array.num_dim++;
SKIP_SPACE( *buf );
if ( **buf != ']' ) errorAndExit( "parseArray: missing ']'." );
(*buf)++;
}
for ( int i=array.num_dim ; i<20 ; i++ ) array.dim[i] = 0;
return no;
}
int StereotypeDefinitionParser::parseIntProperty()
{
expectColon();
return parseIntExpression();
}
