234 lines
5.6 KiB
Markdown
234 lines
5.6 KiB
Markdown
## v4.8.0
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### New Features
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- Add `p_parse_inner_XXX()` APIs that accept a caller-provided set of follow
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tokens. These behave the same as `p_parse_XXX()` by parsing starting at the
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given start rule, but instead of expecting the rest of the input to match
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the start rule they allow specifying a set of tokens that may follow the
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start rule.
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- Add `p_set_position()` API to set the current text position stored in the
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context. Useful for setting the initial text position to something other
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than `(1, 1)` for a nested parse operation.
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- Add `p_input_index()` API to get the current input text byte offset.
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- Add `p_set_input_index()` API to set the current input text byte offset.
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Useful together with `p_set_position()` to rewind the input part-way through
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a parse in order to re-read an earlier section of the input.
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## v4.7.0
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### New Features
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- Support parser rule user code blocks in tree generation mode.
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### Fixes
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- propane.vim: do not highlight rule components as propane keywords
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## v4.6.0
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### New Features
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- Add lexer user code API to access matched input text positions
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- Track rule component text positions and add parser user code API to access
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### Fixes
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- Fixed a few user guide and source comments related to text input positions
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## v4.5.0
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### New Features
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- Add `noline` grammar statement to skip emitting `#line` directives
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- Attempt to autodetect target language (D/C++) in extra/vim/syntax/propane.vim
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### Fixes
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- Fix #line reset directives
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- Update keyword list in extra/vim/syntax/propane.vim
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- Fix propane.vim keyword detection
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## v4.4.0
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### New Features
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- Add p_value_get() / p_value_get_XXX() accessors
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## v4.3.0
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### New Features
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- Use #line for user code blocks to report input grammar position for errors.
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## v4.2.0
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### New Features
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- Add support for a custom lex function.
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## v4.1.0
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### New Features
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- Add `p_context_delete()` and `p_tree_delete()` for D targets.
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## v4.0.0
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### New Features
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- Add `context_user_fields` statement to allow custom context user fields.
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- Add `token_user_fields` statement to allow custom token user fields.
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- Add `on_token_node` statement to allow custom code when constructing token nodes.
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- Add `free_token_node` statement to allow custom code when freeing token nodes.
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- Add `p_context_delete()`.
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- Allow `drop` patterns to execute lexer user code blocks.
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### Breaking Changes
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- Replace `p_context_init()` with `p_context_new()` and `p_context_delete()`.
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- Renamed `p_free_tree()` to `p_tree_delete()`.
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- The `free_token_node` statement now takes a user code block instead of a
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function name parameter.
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## v3.0.0
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### New Features
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- Add support for multiple starting rules (#38)
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- Add `p_free_tree()` functions to reclaim generated tree memory
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- Add `free_token_node` grammar statement to reclaim user-allocated memory stored in a Token tree node `pvalue` field
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- Add valgrind memory leak tests to unit tests
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- Fix build issues for C++ to officially support C++ target output
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### Improvements
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- Document `p_lex()` and `p_token_info_t` in user guide (#37)
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### Breaking Changes
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- Rename AST generation mode to tree generation mode (see [UPGRADING.md](UPGRADING.md))
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## v2.3.0
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### New Features
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- Add \D, \S, \w, \W special character classes
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### Improvements
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- Include line numbers for pattern errors
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- Improve performance in a few places
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- Parallelize parser table generation on Linux hosts
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- Add github workflow to run unit tests
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### Fixes
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- Fix a couple clang warnings for C backend
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- Fix C backend not fully initializing pvalues when multiple ptypes are used with different sizes.
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- Fix some user guide examples
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## v2.2.1
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### Fixes
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- Fix GC issue for D backend when AST is enabled (#36)
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## v2.2.0
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### Improvements
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- Allow multiple lexer modes to be specified for a lexer pattern (#35)
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- Document p_decode_code_point() API function (#34)
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## v2.1.1
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### Fixes
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- Field aliases for AST node fields could alias incorrect field when multiple rule alternatives present for one rule set (#33)
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## v2.1.0
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### Improvements
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- Report rule name and line number for conflicting AST node field positions errors (#32)
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## v2.0.0
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### Improvements
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- Log conflicting rules on reduce/reduce conflict (#31)
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- Use 1-based row and column values for position values (#30)
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### Fixes
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- Fix named optional rules (#29)
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### Upgrading
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- Adjust all uses of p_position_t row and col values to expect 1-based instead
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of 0-based values.
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## v1.5.1
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### Improvements
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- Improve performance (#28)
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## v1.5.0
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### New Features
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- Track start and end text positions for tokens and rules in AST node structures (#27)
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- Add warnings for shift/reduce conflicts to log file (#25)
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- Add -w command line switch to treat warnings as errors and output to stderr (#26)
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- Add rule field aliases (#24)
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### Improvements
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- Show line numbers of rules on conflict (#23)
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## v1.4.0
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### New Features
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- Allow user to specify AST node name prefix or suffix
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- Allow specifying the start rule name
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- Allow rule terms to be marked as optional
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### Improvements
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- Give a better error message when a referenced ptype has not been declared
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## v1.3.0
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### New Features
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- Add AST generation (#22)
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## v1.2.0
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### New Features
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- Allow one line user code blocks (#21)
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- Add backslash escape codes (#19)
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- Add API to access unexpected token found (#18)
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- Add token_names API (#17)
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- Add D example to user guide for p_context_init() (#16)
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- Allow user termination from lexer code blocks (#15)
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### Fixes
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- Fix generator hang when state transition cycle is present (#20)
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## v1.1.0
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### New Features
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- Add user parser terminations (#13)
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- Document generated parser API in user guide (#14)
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## v1.0.0
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- Initial release
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