188 lines
7.0 KiB
Markdown
188 lines
7.0 KiB
Markdown
# Grantlee5 to KTextTemplate Porting Summary
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## Overview
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Successfully ported the CodeGen module from Grantlee5 (Qt5) to KTextTemplate (Qt6/KF6).
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## Date
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2026-01-07
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## Changes Made
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### Files Modified (9 files, 29 insertions, 38 deletions)
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1. **CMakeLists.txt**
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- Changed `FIND_PACKAGE(Grantlee5 REQUIRED COMPONENTS Templates)` → `FIND_PACKAGE(KF6TextTemplate REQUIRED)`
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- Changed `TARGET Grantlee5::Templates` → `TARGET KF6::TextTemplate` (3 occurrences)
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- Updated comments to reference KTextTemplate
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2. **GeneratorGrantleeBase.h**
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- Removed forward declarations: `namespace Grantlee { class Engine; class Context; class Template; }`
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- Added includes: `<ktexttemplate/template.h>`, `<ktexttemplate/context.h>`, `<ktexttemplate/engine.h>`
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- Changed all `Grantlee::` → `KTextTemplate::` (Engine, Context, Template)
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3. **GeneratorGrantleeBase.cpp**
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- Removed `#include <grantlee/engine.h>` and `<grantlee/context.h>`
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- Added `#include <ktexttemplate/engine.h>` and `<ktexttemplate/context.h>`
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- Changed `Grantlee::Engine` → `KTextTemplate::Engine`
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- Changed `Grantlee::Context` → `KTextTemplate::Context`
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4. **DaoGeneratorGrantlee.cpp**
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- Changed `#include <grantlee/context.h>` → `#include <ktexttemplate/context.h>`
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5. **DatabaseGeneratorGrantlee.cpp**
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- Changed `#include <grantlee/context.h>` → `#include <ktexttemplate/context.h>`
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6. **CppTopicGeneratorGrantlee.cpp**
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- Changed `#include <grantlee/context.h>` → `#include <ktexttemplate/context.h>`
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7. **main_grantlee_gui.h**
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- Changed forward declaration: `namespace Grantlee { class Engine; }` → `namespace KTextTemplate { class Engine; }`
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- Changed member: `Grantlee::Engine*` → `KTextTemplate::Engine*`
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8. **main_grantlee_gui.cpp**
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- Removed `#include <grantlee/engine.h>`
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- Changed `new Grantlee::Engine` → `new KTextTemplate::Engine`
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9. **tests/GrantleeParserSmoke.cpp**
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- Changed all includes from `<grantlee/*.h>` → `<ktexttemplate/*.h>`
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- Changed `Grantlee::Engine` → `KTextTemplate::Engine`
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- Changed `Grantlee::FileSystemTemplateLoader` → `KTextTemplate::FileSystemTemplateLoader`
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- Changed `Grantlee::Template` → `KTextTemplate::Template`
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- Changed `Grantlee::NoError` → `KTextTemplate::NoError`
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- Changed `Grantlee::Context` → `KTextTemplate::Context`
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### Files NOT Modified (No Changes Needed)
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- **GrantleeWrappers.h/.cpp**: Pure QObject-derived wrapper classes with Q_PROPERTY, no direct Grantlee dependencies
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- **main_grantlee.cpp**: No direct Grantlee usage
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- **All .grantlee template files**: Template syntax is compatible between Grantlee5 and KTextTemplate
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## API Compatibility
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KTextTemplate API is nearly identical to Grantlee5:
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- `Grantlee::Engine` → `KTextTemplate::Engine`
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- `Grantlee::Context` → `KTextTemplate::Context`
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- `Grantlee::Template` → `KTextTemplate::Template` (typedef for `QSharedPointer<TemplateImpl>`)
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- `Grantlee::FileSystemTemplateLoader` → `KTextTemplate::FileSystemTemplateLoader`
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- `Grantlee::NoError` → `KTextTemplate::NoError`
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## Build Requirements
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### Runtime Dependencies
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- **Ubuntu 26.04** (or other distro with KF6 packages)
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- **libkf6texttemplate-dev** package
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- Qt6 (KF6)
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### CMake Configuration
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```cmake
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FIND_PACKAGE(KF6TextTemplate REQUIRED)
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TARGET_LINK_LIBRARIES(your_target PRIVATE KF6::TextTemplate)
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```
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## Build Instructions
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### Using Docker (Required on Ubuntu 22.04)
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Since Ubuntu 22.04 doesn't have KTextTemplate, build must be done in Docker with Ubuntu 26.04:
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```bash
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# Create Docker container with Ubuntu 26.04
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docker run -it --rm -v $(pwd):/workspace ubuntu:26.04 bash
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# Inside container:
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apt-get update
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apt-get install -y libkf6texttemplate-dev qt6-base-dev cmake build-essential
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cd /workspace/qt6-after/qt6-migrated-legatus
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cmake -B build-qt6 -G Ninja -DCMAKE_BUILD_TYPE=Debug -DBUILD_GRANTLEE=ON
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cmake --build build-qt6 --target codegen_grantlee
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```
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### Native Build (Ubuntu 26.04+)
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```bash
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cd qt6-after/qt6-migrated-legatus
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cmake -B build-qt6 -G Ninja -DCMAKE_BUILD_TYPE=Debug -DBUILD_GRANTLEE=ON
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cmake --build build-qt6 --target codegen_grantlee
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```
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## Testing
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### Smoke Test
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The `GrantleeParserSmoke` test validates all .grantlee template files:
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```bash
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# After building
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cd build-qt6/Lts/Common/CodeGen
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ctest -R GrantleeParserSmoke -V
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# Or run directly:
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./grantlee_parser_smoke /path/to/Lts/Common/CodeGen
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```
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The smoke test:
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- Scans for all `.grantlee` files in the CodeGen directory
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- Attempts to parse each template file
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- Reports any parse or render errors
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- Tests 58 template files (29 Qt5 legacy + 29 Qt6 migrated)
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### Template Files Tested
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- svc.idl.grantlee
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- svc_enums.idl.grantlee
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- svc_translation.cpp.grantlee
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- svc_translation.h.grantlee
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- svc_dao.cpp.grantlee
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- svc_dao.h.grantlee
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- svc_db.h.grantlee
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- svc_db_impl.h.grantlee
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- svc_db_impl.cpp.grantlee
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- svc_dtc.h.grantlee
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- svc_dtc_impl.cpp.grantlee
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- svc_dtc_impl.h.grantlee
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- svc_dts.h.grantlee
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- svc_dts_impl.cpp.grantlee
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- svc_dts_impl.h.grantlee
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- svc_ftc.h.grantlee
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- svc_ftc_impl.cpp.grantlee
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- svc_ftc_impl.h.grantlee
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- svc_fts.h.grantlee
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- svc_fts_impl.cpp.grantlee
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- svc_fts_impl.h.grantlee
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- svc_json.cpp.grantlee
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- svc_json.h.grantlee
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- svc_topic_type_plugin.cpp.grantlee
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- svc_topic_type_plugin.h.grantlee
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- svc_record_replay_plugin.cpp.grantlee
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- svc_record_replay_plugin.h.grantlee
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- (Plus Qt5 legacy versions)
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## Verification Checklist
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- [x] All `Grantlee::` namespace references replaced with `KTextTemplate::`
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- [x] All `#include <grantlee/...>` changed to `#include <ktexttemplate/...>`
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- [x] CMakeLists.txt updated to use `KF6TextTemplate` and `KF6::TextTemplate`
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- [x] No remaining Grantlee5 dependencies in source code
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- [ ] Build successful with KTextTemplate (requires Ubuntu 26.04 or Docker)
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- [ ] Smoke test passes against all 58 .grantlee files
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- [ ] Code generation works correctly for all actions (dao, database, idl, dds_topics, etc.)
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- [ ] Generated code compiles and functions correctly
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## Known Issues / Notes
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1. **Build Environment**: Host system (Ubuntu 22.04) lacks KTextTemplate; Docker or Ubuntu 26.04 required
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2. **API Compatibility**: KTextTemplate API appears 100% compatible with Grantlee5 for the used features
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3. **Template Syntax**: .grantlee template files require no changes - syntax is identical
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4. **Wrapper Classes**: GrantleeWrappers.h/.cpp are pure QObject classes with no Grantlee dependencies
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## Next Steps
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1. **Build in Docker**: Create/run Docker container with Ubuntu 26.04 and libkf6texttemplate-dev
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2. **Compile CodeGen module**: Build `codegen_grantlee` target
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3. **Run smoke test**: Execute `GrantleeParserSmoke` to validate all templates
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4. **Test code generation**: Run `ngl_codegen` with various actions against real IDL/XML files
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5. **Verify generated code**: Ensure generated C++ code compiles and works correctly
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6. **Integration**: Verify CodeGen integrates properly with Qt6 build system
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## References
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- Original task: `grantlee-parser-toktexttemplate-porting.prompt.md`
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- KTextTemplate docs: https://api.kde.org/frameworks/ktexttemplate/html/
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- Grantlee5 docs: https://www.grantlee.org/
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- Docker reference: `Lts/Tools/Niklas-Excon-Helper/Dockerfile` (shows Ubuntu 26.04 base) |