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# TOP IDE Global Summary Report (Sept 2025 - Feb 2026)

## Executive Overview

Over the past six months, the ETSI TOP IDE has undergone a significant modernization and feature expansion phase, primarily driven by the **TTF::045** task force. The project successfully migrated to **Java 21**, implemented foundational support for **ASN.1 and YANG**, and introduced a new **TTCN-3 rendering engine**.

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## 1. Major Technical Milestones

### **Java 21 & Infrastructure Modernization**

*   **Java 21 Migration:** The entire IDE stack, target platforms, and build configurations were updated to Java 21 (#147).

*   **Dependency Decoupling:** The monolithic `TDLHelper` was decoupled to reduce artifact sizes and improve modularity.

*   **Build Reliability:** Fixed several CI/CD pipeline issues and OCL dependency resolution bugs.

### **Core Language & Meta-model Evolution**

*   **Syntactic Ambiguity Resolution:** Resolved critical ambiguities in `CastDataUse` and `DataElementUse` that were hindering code completion.

*   **New Language Features:** Added direct support for negative numbers (negation) and refined OCL constraints for complex behaviors.

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## 2. Key Feature Progress

### **Conversion & Interoperability**

*   **TP to TD Conversion (Epic #34):** Developed a new UI-driven mechanism to convert Test Purposes (TP) into Test Descriptions (TD), including identifier substitution and traceability options.

*   **TTCN-3 Rendering (Epic #27):** Implemented a new, standalone Java-based renderer to translate TDL models into TTCN-3 test cases, supporting complex mappings like reductions and extensions.

*   **ASN.1 & YANG Support:** Validated the `ASN1C` and `pycrate` tools and added dedicated TDL type libraries for ASN.1 and YANG definitions.

### **User Experience (UX) & Editor Intelligence**

*   **Semantic Editor:** Introduced semantic highlighting for events and improved content assist for complex data structures.

*   **Performance:** Implemented a validation toggle and refactored the validator to prevent UI freezes during intensive editing sessions.

*   **Rich Hover:** Enhanced hover providers to show recursive structural data for instances and message arguments.

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## 3. Strategic & Methodological Insights (from TTF Notes)

*   **TDL Philosophy:** Maintained a focus on "strong typing," leading to discussions on requiring explicit type-casting for inferred parameters.

*   **Abstract States:** Consensus reached on reusing `Initial` and `Final` annotations for verdict handling, avoiding unnecessary meta-model bloat.

*   **Local Scope Variables:** Decision to prioritize component-bound variables over behavior-local variables to keep the language manageable for users.

*   **Default Timers:** Move toward using annotations for wait timers to keep the core specification lightweight while meeting user requirements for timeout management.

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## 4. Quantitative Performance

*   **Commits:** 85+

*   **Issues Resolved:** 30+ (Project Level)

*   **Epics with Active Progress:** 16 (Group Level)

*   **New Priority Items:** 25

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## 5. Roadmap & Future Outlook (2026)

*   **Documentation:** Prioritizing the TR and Wiki updates for ASN.1 and OpenAPI importers.

*   **VS Code Support:** Preliminary work has begun on exploring a TDL plugin for the Visual Studio Code platform (Epic #32).

*   **Validation Rigor:** Further implementation of mandatory/optional field checks at the execution level.

**Conclusion:** The project is in a strong state of transition from a modeling-centric tool to a robust, execution-ready IDE integrated into modern CI/CD workflows.