Features

Features

Source generation

• Generates a complete Delphi unit or C# source file from a JSON object or array.
• Supports nested objects, scalar arrays, object arrays, nested arrays, and two-dimensional matrices.
• Reuses compatible object models and merges fields found across array elements.
• Produces valid target-language identifiers and escapes or transforms reserved words.
• Supports configurable class and property naming.
• Emits the imports/usings required by the inferred types.

Type inference

• Integer: Integer or Int64 in Delphi; int or long in C#.
• Fractional number: Double in Delphi; double in C#.
• Boolean: Boolean in Delphi; bool in C#.
• String: string in both languages.
• ISO date: TDate in Delphi; DateOnly in C#.
• ISO date-time: TDateTime in Delphi; DateTime in C#.
• ISO time: TTime in Delphi; TimeOnly in C#.
• GUID string: TGUID in Delphi; Guid in C#.
• URI string: TURI in Delphi; Uri in C#.
• Null: merged with other observations and represented through the model's nullability information.

Numeric observations are promoted when compatible. Nullability is propagated through arrays, including nested arrays. More than two array dimensions are currently rejected.

Collections and matrices

• Delphi collections use TList<T> or TObjectList<T> with generated lifetime-management code.
• Scalar matrices use TMatrix<T>.
• Object matrices use TObjectMatrix<T>, which owns row lists and their contained objects.
• C# matrices use a generated Matrix<T> based on List<List<T>> and work with System.Text.Json.
• Jagged row lengths are allowed; conflicting leaf types are diagnosed.

Delphi JSON round trips

Generated Delphi classes inherit from TJsonDTO. The runtime provides:

• AsJson for serialization and deserialization;
• Clone<T> through a JSON round trip;
• generic list reflection without leaking internal list implementation details;
• optional JSON-name attributes;
• zero-date suppression through [SuppressZero];
• explicit object-matrix load/save support;
• ISO-8601 date handling and pretty printing.

Desktop application

The VCL application provides:

• simultaneous selectable Delphi, C#, BSON, and minified-JSON outputs;
• syntax highlighting appropriate to the selected language;
• JSON formatting and file open/save commands;
• JSON structure visualization;
• bundled demo-data browser;
• VCL or FMX demo-project generation using the current JSON;
• settings dialogs for both language backends;
• path-aware error selection in the JSON editor;
• asynchronous GitHub release checks.

Known boundaries

• Input must have an object or array at the root.
• An empty array has no observable element type; generation can only use an unknown placeholder until a type is available.
• Arrays deeper than two dimensions are not supported.
• Semantic string detection is intentionally conservative and based on recognizable date, time, GUID, and URI formats.