コード例 #1
0
        CallInfo _GetSelectPartCalls(ref string calls)
        {
            CallInfo ci = new CallInfo();
            {
                string colpart = Qa.NextPart(ref calls);
                if (0 == colpart.Length)
                {
                    throw new Exception("Expected value");
                }
                if ("-" == colpart || "+" == colpart)
                {
                    colpart += Qa.NextPart(ref calls);
                }
                string s;
                s = Qa.NextPart(ref calls);
                if ("(" == s)
                {
                    List <CallInfoArg> args = new List <CallInfoArg>(4);
                    {
                        string xcalls = calls;
                        if (")" == Qa.NextPart(ref xcalls))
                        {
                            calls   = xcalls;
                            ci.func = colpart;
                            ci.args = args;
                            return(ci);
                        }
                    }
                    for (; ;)
                    {
                        CallInfo    nestci = _GetSelectPartCalls(ref calls);
                        CallInfoArg arg    = new CallInfoArg();
                        if (nestci.func == null)
                        {
#if DEBUG
                            if (1 != nestci.args.Count)
                            {
                                throw new Exception("DEBUG:  (1 != nestci.args.Count)");
                            }
#endif
                            arg = nestci.args[0];
                        }
                        else
                        {
                            arg.nest = nestci;
                        }
                        args.Add(arg);
                        s = Qa.NextPart(ref calls);
                        if (0 == string.Compare("AS", s, true))
                        {
                            arg = new CallInfoArg();
                            {
                                StringBuilder sbas     = new StringBuilder();
                                int           asparens = 0;
                                for (; ;)
                                {
                                    s = Qa.NextPart(ref calls);
                                    if (0 == s.Length || "," == s)
                                    {
                                        //calls += s;
                                        break;
                                    }
                                    else if ("(" == s)
                                    {
                                        asparens++;
                                        sbas.Append(s);
                                    }
                                    else if (")" == s)
                                    {
                                        if (0 == asparens)
                                        {
                                            //calls += s;
                                            break;
                                        }
                                        asparens--;
                                        sbas.Append(s);
                                    }
                                    else
                                    {
                                        sbas.Append(s);
                                    }
                                }
                                if (0 == sbas.Length)
                                {
                                    throw new Exception("Expected type after AS");
                                }
                                {
                                    DbValue iterval = functools.AllocValue(mstring.Prepare("AS " + sbas.ToString()));
                                    // Need to copy the value out of the functools memory
                                    // so that it survives this map/reduce iteration...
                                    DbType      xtype;
                                    ByteSlice   iterbs = iterval.Eval(out xtype);
                                    List <byte> newbuf = new List <byte>(iterbs.Length);
                                    iterbs.AppendTo(newbuf);
                                    arg.value = new ImmediateValue(null, ByteSlice.Prepare(newbuf), xtype);
                                }
                                args.Add(arg);
                            }
                            //s = Qa.NextPart(ref calls);
                        }
                        if (s == ",")
                        {
                            continue;
                        }
                        if (s == ")")
                        {
                            string xnc = calls;
                            s = Qa.NextPart(ref xnc);
                            if (0 == s.Length || "," == s || ")" == s ||
                                0 == string.Compare(s, "AS", true))
                            {
                                ci.func = colpart;
                                ci.args = args;
                                return(ci);
                            }
                            else
                            {
                                throw new Exception("Unexpected: " + s);
                            }
                            break;
                        }
                        else
                        {
                            if (s.Length != 0)
                            {
                                throw new Exception("Unexpected: " + s);
                            }
                            throw new Exception("Unexpected end of select clause");
                        }
                    }
                    // Doesn't reach here.
                }
                else
                {
                    //if (0 == s.Length || "," == s || ")" == s)
                    {
                        calls = s + " " + calls; // Undo.
                        //ci.func = null;
                        CallInfoArg arg;
                        arg = new CallInfoArg();
                        //arg.s = colpart;
                        if (colpart.Length > 0 &&
                            (char.IsLetter(colpart[0]) || '_' == colpart[0]))
                        {
                            int icol = DbColumn.IndexOf(cols, colpart);
                            if (-1 == icol)
                            {
                                throw new Exception("No such column named " + colpart);
                            }
                            arg.value = new ColValue(this, cols[icol]);
                        }
                        else
                        {
                            DbTypeID  typeid;
                            ByteSlice bs = Types.LiteralToValue(colpart, out typeid);
                            arg.value = new ImmediateValue(null, bs, DbType.Prepare(bs.Length, typeid));
                        }
                        ci.args    = new CallInfoArg[1];
                        ci.args[0] = arg;
                        return(ci);
                    }

                    /*else
                     * {
                     *  throw new Exception("Unexpected: " + s);
                     * }*/
                }
            }
        }
コード例 #2
0
ファイル: SelectClause.cs プロジェクト: erisonliang/qizmt
        CallInfo _GetSelectPartCalls(ref string calls)
        {
            CallInfo ci = new CallInfo();
            {
                string colpart = Qa.NextPart(ref calls);
                if (0 == colpart.Length)
                {
                    throw new Exception("Expected value");
                }
                if ("-" == colpart || "+" == colpart)
                {
                    colpart += Qa.NextPart(ref calls);
                }
                string s;
                s = Qa.NextPart(ref calls);
                if ("(" == s)
                {
                    List<CallInfoArg> args = new List<CallInfoArg>(4);
                    {
                        string xcalls = calls;
                        if (")" == Qa.NextPart(ref xcalls))
                        {
                            calls = xcalls;
                            ci.func = colpart;
                            ci.args = args;
                            return ci;
                        }
                    }
                    for (; ; )
                    {
                        CallInfo nestci = _GetSelectPartCalls(ref calls);
                        CallInfoArg arg = new CallInfoArg();
                        if (nestci.func == null)
                        {
#if DEBUG
                            if (1 != nestci.args.Count)
                            {
                                throw new Exception("DEBUG:  (1 != nestci.args.Count)");
                            }
#endif
                            arg = nestci.args[0];
                        }
                        else
                        {
                            arg.nest = nestci;
                        }
                        args.Add(arg);
                        s = Qa.NextPart(ref calls);
                        if (0 == string.Compare("AS", s, true))
                        {
                            arg = new CallInfoArg();
                            {
                                StringBuilder sbas = new StringBuilder();
                                int asparens = 0;
                                for (; ; )
                                {
                                    s = Qa.NextPart(ref calls);
                                    if (0 == s.Length || "," == s)
                                    {
                                        //calls += s;
                                        break;
                                    }
                                    else if ("(" == s)
                                    {
                                        asparens++;
                                        sbas.Append(s);
                                    }
                                    else if (")" == s)
                                    {
                                        if (0 == asparens)
                                        {
                                            //calls += s;
                                            break;
                                        }
                                        asparens--;
                                        sbas.Append(s);
                                    }
                                    else
                                    {
                                        sbas.Append(s);
                                    }
                                }
                                if (0 == sbas.Length)
                                {
                                    throw new Exception("Expected type after AS");
                                }
                                {
                                    DbValue iterval = functools.AllocValue(mstring.Prepare("AS " + sbas.ToString()));
                                    // Need to copy the value out of the functools memory
                                    // so that it survives this map/reduce iteration...
                                    DbType xtype;
                                    ByteSlice iterbs = iterval.Eval(out xtype);
                                    List<byte> newbuf = new List<byte>(iterbs.Length);
                                    iterbs.AppendTo(newbuf);
                                    arg.value = new ImmediateValue(null, ByteSlice.Prepare(newbuf), xtype);
                                }
                                args.Add(arg);
                            }
                            //s = Qa.NextPart(ref calls);
                        }
                        if (s == ",")
                        {
                            continue;
                        }
                        if (s == ")")
                        {
                            string xnc = calls;
                            s = Qa.NextPart(ref xnc);
                            if (0 == s.Length || "," == s || ")" == s
                                || 0 == string.Compare(s, "AS", true))
                            {
                                ci.func = colpart;
                                ci.args = args;
                                return ci;
                            }
                            else
                            {
                                throw new Exception("Unexpected: " + s);
                            }
                            break;
                        }
                        else
                        {
                            if (s.Length != 0)
                            {
                                throw new Exception("Unexpected: " + s);
                            }
                            throw new Exception("Unexpected end of select clause");
                        }
                    }
                    // Doesn't reach here.
                }
                else
                {
                    //if (0 == s.Length || "," == s || ")" == s)
                    {
                        calls = s + " " + calls; // Undo.
                        //ci.func = null;
                        CallInfoArg arg;
                        arg = new CallInfoArg();
                        //arg.s = colpart;
                        if (colpart.Length > 0
                            && (char.IsLetter(colpart[0]) || '_' == colpart[0]))
                        {
                            int icol = DbColumn.IndexOf(cols, colpart);
                            if (-1 == icol)
                            {
                                throw new Exception("No such column named " + colpart);
                            }
                            arg.value = new ColValue(this, cols[icol]);
                        }
                        else
                        {
                            DbTypeID typeid;
                            ByteSlice bs = Types.LiteralToValue(colpart, out typeid);
                            arg.value = new ImmediateValue(null, bs, DbType.Prepare(bs.Length, typeid));
                        }
                        ci.args = new CallInfoArg[1];
                        ci.args[0] = arg;
                        return ci;
                    }
                    /*else
                    {
                        throw new Exception("Unexpected: " + s);
                    }*/
                }
            }
        }