core: new DocAny() factory function

Author: arnaud65110

src/core/mormot.core.variants.pas

@@ -3735,6 +3735,10 @@ function DocDictCopy(const v: variant): IDocDict; overload;
 function DocDictCopy(const dv: TDocVariantData;
   model: TDocVariantModel): IDocDict; overload;
 
+/// create a self-owned IDocDict/IDocList from a JSON object/array content
+// - if json is something else than an object or array, returns nil
+function DocAny(const json: RawUtf8; model: TDocVariantModel): IDocAny;
+
 var
   /// default TDocVariant model for IDocList/IDocDict
   DocAnyDefaultModel: TDocVariantModel = mFastFloat;
@@ -11613,6 +11617,22 @@ function DocDictFromKeys(const keys: array of RawUtf8; const value: variant;
   result := d;
 end;
 
+{ IDocAny factories functions }
+
+function DocAny(const json: RawUtf8; model: TDocVariantModel): IDocAny;
+begin
+  result := nil;
+  case GetFirstJsonToken(pointer(json)) of
+    jtObjectStart:
+      result := DocDict(model);
+    jtArrayStart:
+      result := DocList(model);
+  else
+    exit;
+  end;
+  result.SetJson(json);
+end;
+
 
 { TDocAny }
 

src/mormot.commit.inc

@@ -1 +1 @@
-'2.3.13156'
+'2.3.13157'