static Dictionary <TAttr, object> ParseAttrs <TAttr>(Generator.Ctx ctx, IEnumerable <string> comments,
params TAttr[] firstLineDefaultKeys
)
where TAttr : struct
{
bool firstLine = true;
var lstDescr = new List <string>();
Dictionary <TAttr, object> attrs = null;
int iDefaultKey = (firstLineDefaultKeys.Length > 0) ? 0 : -1;
foreach (var txt in comments)
{
bool isKeyValueComment;
{
int iEqualSign = txt.IndexOf('=');
if (iEqualSign > 0)
{
isKeyValueComment = !Enumerable.Range(0, iEqualSign - 1).Any(i => char.IsWhiteSpace(txt[i]));
}
else
{
isKeyValueComment = false;
}
}
if ((firstLineDefaultKeys.Length == 0 || !firstLine) && !isKeyValueComment)
{
if (txt.Trim().Length == 0)
{
lstDescr.Clear();
}
else
{
lstDescr.Add(txt);
}
continue; // do not parse simple comment lines
}
foreach (Expr attr in Parser.ParseSequence(txt, comparison: StringComparison.InvariantCulture))
{
string attrName;
Expr attrValue;
if (attr.nodeType == ExprType.Equal)
{ // named attribute
var be = (BinaryExpr)attr;
if (be.left.nodeType == ExprType.Reference)
{
attrName = Convert.ToString(be.left);
}
else
{
var name = Generator.Generate(be.left, ctx);
if (OPs.KindOf(name) != ValueKind.Const)
{
ctx.Error("ParseAttrs: attribute name must be constant\t" + be.left.ToString());
}
attrName = Convert.ToString(name);
}
attrValue = be.right;
}
else if (firstLine && iDefaultKey >= 0)
{ // unnamed attributes possible in first line
attrs = attrs ?? new Dictionary <TAttr, object>();
attrs.Add(firstLineDefaultKeys[iDefaultKey], attr);
if (++iDefaultKey >= firstLineDefaultKeys.Length)
{
iDefaultKey = -1;
}
continue;
}
else
{
break; // it is simple comment to the end of line?
}
if (attrValue.nodeType != ExprType.Constant)
{
attrValue = new CallExpr(FuncDefs_Core._block, attrValue);
}
var value = Generator.Generate(attrValue, ctx);
if (OPs.KindOf(value) != ValueKind.Const)
{
ctx.Error(string.Format("ParseAttrs: attribute value must be constant\t{0}={1}", attrName, attrValue));
}
if (attrName != null)
{
if (!Enum.TryParse <TAttr>(attrName, out var attrKey))
{
throw new Generator.Exception($"Unrecognized attribute name, {attrName}={attrValue} // enum {typeof(TAttr)}");
}
attrs = attrs ?? new Dictionary <TAttr, object>();
Attr.Add(attrs, attrKey, value, false);
}
}
firstLine = false;
}
if (lstDescr.Count > 0)
{
attrs = attrs ?? new Dictionary <TAttr, object>();
if (!Enum.TryParse <TAttr>(nameof(Attr.Tbl.Description), out var attrDescription))
{
throw new Generator.Exception($"ParseAttrs: enum '{typeof(TAttr)}' does not contains value named '{nameof(Attr.Tbl.Description)}'");
}
attrs.Add(attrDescription, lstDescr);
}
return(attrs);
}
internal static SqlFuncPreprocessingCtx NewCodeLookupDict(SqlFuncPreprocessingCtx src, SqlInfo tmpl,
string descriptor, Dictionary <Attr.Col, object> descrFieldAttrs)
{
var select = tmpl.sql[SqlSectionExpr.Kind.Select];
var innerAttrs = new List <Dictionary <Attr.Col, object> >(select.args.Count + 1);
var sb = new StringBuilder();
foreach (var kind in SqlSectionExpr.EnumKinds())
{
var section = tmpl.sql[kind];
switch (kind)
{
case SqlSectionExpr.Kind.Select:
{
sb.AppendLine("SELECT");
var modFunc = src.ldr.ModifyFieldExpr(src, descriptor);
var unmFunc = src.ldr.ModifyFieldExpr(src, null);
var tmplInnerAttrs = (Dictionary <Attr.Col, object>[])tmpl.attrs[Attr.Tbl._columns_attrs];
for (int i = 0; i < select.args.Count; i++)
{
var attrs = tmplInnerAttrs[i];
if (i > 0)
{
sb.AppendLine(",");
}
object v;
if (Attr.GetBool(attrs, Attr.Col.FixedAlias))
{
v = unmFunc(select.args[i], attrs);
}
else
{
v = modFunc(select.args[i], attrs);
}
sb.Append($"\t{v}");
innerAttrs.Add(attrs);
}
sb.AppendLine();
}
break;
case SqlSectionExpr.Kind.From:
if (section != null)
{
sb.AppendLine(section.ToString());
}
else
{
sb.AppendLine($"FROM {descriptor}");
}
break;
default:
if (section != null)
{
sb.AppendLine(section.ToString());
}
break;
}
}
var tblAttrs = new Dictionary <Attr.Tbl, object>(tmpl.attrs);
var c = new SqlFuncPreprocessingCtx()
{
ldr = src.ldr,
actualityInDays = Attr.defaultActualityDays * 10,
arrayResults = true,
funcNamesPrefix = descriptor + "_DictData",
tblAttrs = tblAttrs,
queryText = sb.ToString(),
};
tblAttrs.Remove(Attr.Tbl.LookupTableTemplate);
string tmplDescr;
{
string srcTableComment = Attr.OneLineText(src.tblAttrs.Get(Attr.Tbl.Description));
string tmplDescrComment = Attr.OneLineText(descrFieldAttrs.Get(Attr.Col.Description));
if (tblAttrs.TryGetValue(Attr.Tbl.TemplateDescription, out var objTmplDescr))
{
tmplDescr = string.Format(Convert.ToString(objTmplDescr), descriptor, tmplDescrComment, srcTableComment);
}
else
{
tmplDescr = $"Instantiated lookup table for\t{descriptor}\t{tmplDescrComment}\t{srcTableComment}";
}
}
tblAttrs.Remove(Attr.Tbl.TemplateDescription);
tblAttrs[Attr.Tbl.FuncPrefix] = c.funcNamesPrefix;
Attr.Add(tblAttrs, Attr.Tbl.Description, tmplDescr, true);
if (!src.isTimed)
{
tblAttrs.Remove(Attr.Tbl.ActualityDays);
}
else if (!tblAttrs.ContainsKey(Attr.Tbl.ActualityDays))
{
tblAttrs.Add(Attr.Tbl.ActualityDays, c.actualityInDays);
}
tblAttrs[Attr.Tbl.ArrayResults] = true;
tblAttrs[Attr.Tbl._columns_attrs] = innerAttrs;
return(c);
}
