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Delphi Converters
Many companies today face the challenge that their existing Delphi systems are still being used productively, but are becoming increasingly difficult to maintain and only partially integrable with modern technologies. At the same time, it is becoming harder and harder to find experienced Delphi developers.
In addition, many of these applications have evolved over decades and implement business-critical processes. A complete redevelopment would often involve high risks, long development times, and significant costs.
In such cases, it is worth considering a gradual migration of the existing systems.
How the d2c Converters*) Work
The converters offered here primarily operate on the level of individual Delphi projects, modules, or units.
Their goal is not to automatically analyze, restructure, or fully migrate entire software systems including their overall architecture, nor are they intended for automatic GUI redevelopment. Instead, the tools focus on translating existing Delphi source code as directly and transparently as possible.
The module-based approach offers several practical advantages:
| Advantage | Description |
|---|---|
| High transparency | The generated code remains close to the original |
| Good maintainability | Developers can selectively adapt individual modules |
| Gradual migration | Units can be converted separately |
| Reduced risk | No deep automatic architectural modifications |
| Better debuggability | Errors can be traced more easily |
Objectives of the Conversion
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Control always remains with the developer. The tools support the migration process, but they do not replace the developer's technical and architectural decision-making responsibility.
Alternatives to Using the Converters
Other approaches may also be considered for achieving these goals:
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Which method is appropriate depends primarily on project size, complexity, and the available resources.
Advantages of the Converters Compared to Manual Porting
A completely manual porting of large Delphi projects is often extremely time-consuming and error-prone.
Automated conversion provides:
| Advantage | Description |
|---|---|
| Time savings | Large code bases can be migrated automatically |
| Consistency | Uniform target code |
| Traceability | Original structure is preserved |
| Maintainability | Modernized target platforms |
| Risk reduction | Fewer manual errors |
| Gradual migration | No complete rewrite required |
Advantages of the Converters Compared to AI-Based Porting
AI systems can provide valuable support for code porting. However, especially in large projects, consistency is crucial.
A purely AI-based system may translate the same Delphi constructs differently in multiple places. In addition, AI-based approaches may introduce unjustified omissions, inconsistent translations, or forget previously established translation patterns.
Converters such as Delphi2Cpp, on the other hand, operate rule-based and generate reproducible results with stable translation patterns.
| Advantage | Description |
|---|---|
| No "black box converter" | Translation results are reproducible |
| Transparent code | The translated code resembles the original |
| Consistent translations | Identical constructs are handled identically |
| Stability | Translation rules do not change randomly |
| Good controllability | Developers retain oversight of the generated code |
The Ideal Solution Is a Combination of Converters and AI
In practice, the combination of rule-based conversion and AI assistance complements each other particularly well.
The converters handle the large amount of mechanical translation work and generate a consistent technical foundation. AI can then provide targeted assistance for more difficult special cases.
These include, for example:
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This combined approach merges the advantages of both worlds: stable and reproducible base conversion on the one hand, and flexible intelligent assistance on the other.
| Advantage | Description |
|---|---|
| High degree of automation | Large parts of the migration are handled automatically |
| AI support for special cases | Difficult or complex areas can be improved selectively |
| Consistent foundation | The converter generates uniform initial code |
| Faster modernization | Post-processing effort is significantly reduced |
| Improved code quality | Additional checks and safeguards can be added |
| Flexible further development | The generated code can be modernized gradually |
Conclusion
The d2c converters*) are not intended to be a fully automatic replacement for software development. However, they provide a powerful tool for transferring existing Delphi code bases into modern target languages in a structured, transparent, and significantly less labor-intensive manner.
Especially for large and long-established Delphi applications, this approach can help preserve existing investments while simultaneously opening the path toward modern development environments and platforms.
Lizening
*) The term "d2c converters" refers to the tools Delphi2Cpp, Delphi2CB, Aurora2Cpp, and Delphi2C#.