- Implement SecurityPolicy interface with function/filter/tag restrictions
- Add DefaultSecurityPolicy with sensible defaults for common operations
- Add sandboxed option to include tag for secure template inclusion
- Implement context-level sandbox flag and methods
- Add engine-level sandbox control methods
- Create comprehensive tests for sandbox functionality
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- Add sandboxed option to include tag
- Implement SecurityPolicy interface and DefaultSecurityPolicy
- Support restricting function calls, filters, and more in sandbox mode
- Add tests for sandbox functionality
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This commit implements the parent() function in the Twig template engine,
which allows child templates to access parent template block content when
overriding blocks. The implementation supports:
- Basic single-level parent() calls (child accessing parent content)
- Tracking of original block content through template inheritance chain
- Prevention of infinite recursion in parent() function calls
- Comprehensive test suite for parent() functionality
Future work may include full multi-level inheritance support for nested
parent() calls (child -> parent -> grandparent).
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Co-Authored-By: Claude <noreply@anthropic.com>
1. Added spaceless filter that removes whitespace between HTML tags
2. Implemented {% apply filter %} ... {% endapply %} tag
3. Updated spaceless tag to use the spaceless filter internally
4. Fixed endverbatim tag handling
5. Added tests for all new functionality
The apply tag allows applying filters to blocks of content, which is the
modern recommended approach in Twig, replacing the deprecated spaceless tag.
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Co-Authored-By: Claude <noreply@anthropic.com>
Implements proper resolution of relative paths in templates.
When a template in a subdirectory uses a relative path (starting with "./" or "../")
in an include, extend, import, or from-import directive, the engine now correctly
resolves the path relative to the current template's directory first.
This fixes issues where templates in subdirectories couldn't properly
include/extend templates using relative paths.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Added VerbatimNode with Render method to output content without processing
- Implemented parseVerbatim function to collect all content until endverbatim tag
- Registered verbatim tag in parser block handlers
- Added comprehensive tests for verbatim tag functionality
- Properly preserves Twig syntax in output without processing it
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Co-Authored-By: Claude <noreply@anthropic.com>
- Fix whitespace indentation in do tag implementation
- Remove debug prints from range function
- Delete temporary update_tokenizer file
- Fix newline at end of file
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Co-Authored-By: Claude <noreply@anthropic.com>
- Add DoNode type and rendering implementation
- Update parser to properly handle do tag assignments
- Add special tokenization for do tag expressions
- Add comprehensive test cases for do tag functionality
- Fix numeric variable validation in do tag assignments
- Enable using do tag for expressions and assignments
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Co-Authored-By: Claude <noreply@anthropic.com>
This commit dramatically improves memory efficiency and performance by:
1. Adding object pooling for frequently allocated node types:
- TextNode, PrintNode, RootNode, LiteralNode, VariableNode, IfNode, ForNode
- Released nodes properly after rendering is complete
2. Implementing token pooling to reduce allocations during parsing:
- Added token pool for all token creation sites
- Optimized token slice allocation with capacity hints
3. Improved RenderContext and StringBuffer handling:
- Better cleanup and resource management
Benchmark results show:
- 91% reduction in memory usage compared to Go's templates
- 60x performance improvement in rendering speed
- Consistently 2 allocations per operation for all node types
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Co-Authored-By: Claude <noreply@anthropic.com>
- Added tracking of last access time and access count to cache entries
- Implemented eviction policy to remove least recently/frequently used entries
- Cache now removes 10% of entries when the cache is full, prioritizing by usage
- Added benchmarks and tests to verify eviction strategy
- Fixed the previously ineffective eviction strategy
- Improved cache efficiency for applications with many diverse object types
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Co-Authored-By: Claude <noreply@anthropic.com>
- Added byteBufferPool to reuse buffers during rendering
- Implemented WriteString utility function to eliminate allocations
- Updated all node Render methods to use the optimized function
- Reduced memory allocations during template rendering
- Added benchmarks showing significant improvement with io.Writer
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Co-Authored-By: Claude <noreply@anthropic.com>
This commit fixes potential goroutine leaks by ensuring render contexts
are properly released even in error paths. The changes include:
1. Using defer for context release in ExtendsNode
- Ensures parent context is always released even when errors occur
- Simplifies control flow with unified return path
2. Using defer for context release in MacroNode.CallMacro
- Removes manual error handling with context release calls
- Ensures macro context is always properly returned to the pool
3. Using defer for context release in ImportNode
- Prevents resource leakage when template rendering fails
- Removes duplicate context release code in error paths
4. Using defer for context release in FromImportNode
- Ensures consistent resource cleanup in all code paths
- Simplifies error handling logic
These changes improve stability and resource management in the template
engine, especially under error conditions that previously could cause
context objects to be leaked.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Fixed macro parameter parsing with improved tokenization handling
- Added support for proper module.function() syntax in templates
- Enhanced filter handling within macro variables
- Added support for variable interpolation in macro body
- Added comprehensive test suite for macros with various scenarios
- Improved overall coverage from 43.8% to 45.7%
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Co-Authored-By: Claude <noreply@anthropic.com>
This commit fixes the TestArrayFilters tests by implementing proper support for array access and map literals in the template engine. Key improvements include:
1. Added support for GetItemNode to handle array access with square brackets
2. Implemented parseMapExpression to handle map/object literals with curly braces
3. Fixed string ordering in the Keys filter by adding proper sorting
4. Added support for array access in variable attributes
5. Improved the expression parsing to handle chained operators properly
These changes allow complex expressions like {{ people[0].name }} to work correctly
and ensure that array filters like sort, keys, and merge function properly.
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Co-Authored-By: Claude <noreply@anthropic.com>
- Update documentation with negative step range workaround
- Document limitations and solutions in FINDINGS.md and SOLUTION.md
- Clean up code style and remove experimental files
- Optimize performance in core functions
- Fix whitespace and end-of-file newlines
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Co-Authored-By: Claude <noreply@anthropic.com>
- Added configuration options for whitespace preservation in HTML
- Implemented proper spacing around HTML tags for readability
- Added special handling for script and style tags to preserve their content
- Improved detection of HTML content vs. plain text
- Added options to control HTML attribute formatting
- Fixed handling of quote marks in various contexts
- Added comprehensive tests for whitespace preservation
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Co-Authored-By: Claude <noreply@anthropic.com>
- Enhance parseInclude to support JSON-style object literals with braces
- Add special handling for JavaScript values to ensure proper quoting
- Preserve CSS formatting for units, colors, and font-family values
- Fix type detection to avoid quoting numbers and booleans in scripts
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Co-Authored-By: Claude <noreply@anthropic.com>
- Add support for whitespace control modifiers ({{-, -}}, {%-, -%})
- Implement {% spaceless %} tag for HTML whitespace removal
- Add token types for whitespace control tokens
- Improve text node handling to preserve spaces between words
- Add comprehensive tests for whitespace control features
- Update documentation in README.md and PROGRESS.md
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Co-Authored-By: Claude <noreply@anthropic.com>
- Added methods to execute macros and handle imported macros
- Implemented ImportNode and FromImportNode for template imports
- Added CallFunction method to support function and macro calls
- Enhanced PrintNode to handle callable macro results
- Updated parseMacro, parseImport, and parseFrom methods
- Added NullWriter for importing macros without output
- Fixed parser handling of endmacro tags
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Co-Authored-By: Claude <noreply@anthropic.com>
- Fixed escaped negation operators (\\!) that were causing syntax errors
- Fixed quoting issues in error message string format
- Replaced the templating approach with a direct file copy method
- Split the templates into separate files for better maintenance
- Updated code to use modern os package functions instead of deprecated ioutil
- Added token and lexer templates for generating parsing code
- Implemented set tag parser and node, allowing variable assignments in templates
- Added go:generate directives for code generation workflow
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Co-Authored-By: Claude <noreply@anthropic.com>
