ParsingResult Parser::ParseInstruction(InstructionBlock& body, TokIterator& it) {
ParsingResult io_res = ParseIOInstr(body, it);
if(io_res != NOT_MATCHED) {
return io_res;
}
ParsingResult contr_flow_res = ParseControlFlowInstr(body, it);
if(contr_flow_res != NOT_MATCHED) {
return contr_flow_res;
}
ParsingResult assign_res = ParseAssignment(body, it);
if(assign_res != NOT_MATCHED) {
return assign_res;
}
FuncCallCreator func_call_creator;
ParsingResult func_res = ParseFuncCallHeader(func_call_creator, it);
if(func_res != NOT_MATCHED) {
if(func_res == INCORRECT) {
return INCORRECT;
}
body.AddInstruction(PtrVisitable(new FuncCall(func_call_creator.Create())));
return CORRECT;
}
ParsingResult return_expr_res = ParseReturnExpr(body, it);
if(return_expr_res != NOT_MATCHED) {
return return_expr_res;
}
return NOT_MATCHED;
}
/* localexpression
* ::= assignment | returnexpr
* */
static shared_ptr<ExprAST> ParseLocalExpression() {
if (CurTok == T_RETURN)
return ParseReturnExpr();
if (CurTok == T_IDENTIFIER)
return ParseAssignmentExpr();
if (CurTok == T_WHILE)
return ParseWhileExpr();
if (CurTok == T_IF)
return ParseIfExpr();
return 0;
}
