45e1d57536
- Decision recorded in CURRENT_TASK: replace with (no compat alias) - EBNF: add match_expr/pattern/guard; note legacy peek removal - Guides/Reference: update examples and wording (null-coalesce/safe-access sugar via match)
34 lines
2.0 KiB
Markdown
34 lines
2.0 KiB
Markdown
# Nyash Language Reference – Index
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This is the entry point for Nyash language documentation.
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- Full Language Reference (2025): reference/language/LANGUAGE_REFERENCE_2025.md
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- Syntax Cheat Sheet: quick-reference/syntax-cheatsheet.md
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- Phase 12.7 Grammar Specs (ternary, sugar; peek → match に統合):
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- Overview: development/roadmap/phases/phase-12.7/grammar-specs/README.md
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- Token/Grammar: development/roadmap/phases/phase-12.7/ancp-specs/ANCP-Token-Specification-v1.md
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- Sugar Transformations (?., ??, |> and friends): parser/sugar.rs (source) and tools/nyfmt/NYFMT_POC_ROADMAP.md
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- Match Expression (pattern matching): see the Language Reference and EBNF (peek was replaced by match)
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Statement separation and semicolons
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- See: reference/language/statements.md — newline as primary separator; semicolons optional for multiple statements on one line; minimal ASI rules.
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Imports and namespaces
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- See: reference/language/using.md — `using` syntax, runner resolution, and style guidance.
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Grammar (EBNF)
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- See: reference/language/EBNF.md — Stage‑2 grammar specification used by parser implementations.
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- Unified Members (stored/computed/once/birth_once): see reference/language/EBNF.md “Box Members (Phase 15)” and the Language Reference section. Default ON (disable with `NYASH_ENABLE_UNIFIED_MEMBERS=0`).
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Member exceptions and handlers (Stage‑3)
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- Postfix `catch/cleanup` may be attached to computed/once/birth_once/method blocks when Stage‑3 is enabled. Stored members (plain `name: Type [= expr]`) do not support handlers.
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Related implementation notes
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- Tokenizer: src/tokenizer.rs
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- Parser (expressions/statements): src/parser/expressions.rs, src/parser/statements.rs
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- MIR Lowering (expressions): src/mir/builder/exprs.rs and friends
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Navigation tips
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- The “reference/language/LANGUAGE_REFERENCE_2025.md” is the canonical long‑form reference; use the Cheat Sheet for quick syntax lookup.
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- Phase 12.7 files capture the finalized sugar and new constructs (match (replaces peek), ternary, null‑safe).
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