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Chandler Carruth
fccb349af4
This is a re-do of #7888 Outside a call, the grammar scoped a name as a type or a variable by its capitalization. A theme could not distinguish a type from a value with the same spelling, or a parameter, a member, or an implemented interface from any other name. Pointer member access `->` was scoped as a result arrow, which scoped `Lookup` in `regions->Lookup(x)` as a type. `entity.name.type` now applies only in a type position (after `:`, `->`, `as`, `adapt`, or `require`, or in an `impl`) and to the name a nominal declaration declares. A qualifier, in a declared name like `fn N.Base(T: type).F()` or in a type, is `entity.name.scope-resolution` nested in `entity.name.type`. As in the parser, a name is a qualifier when its parameter lists are followed by `.`. Parameters, `let` bindings, choice alternatives, members, implemented interfaces, primitive types, `import`, and the strings naming a builtin or a library have their own scopes, and brackets use the C++ grammar's scopes. A `->` written directly after its operand is member access; no result arrow in the repository is written that way. The sample palette renders each scope that depends on context differently, and `tmlanguage.py` now supports nested captures. In 17 of the 19 themes measured, the VS Code built-ins plus One Dark Pro, Night Owl, Tokyo Night, and Nord, 13% to 27% of the characters in hand-written Carbon change color or style. A theme loses a color where `.` is now punctuation, where word operators like `as` are no longer control-flow keywords, or where a name outside a type position is no longer a type. Assisted-by: Claude Code
Developer Utilities
This directory collects tools and utilities that may be useful to both Carbon developers and developers writing Carbon code.
Editor Support
Other Editors
Any editor that supports Language server protocol and/or tree-sitter is
supported. The editor just needs to be configured manually.
bazel build //toolchain produces the language server binary.
utils/tree_sitter contains the tree-sitter grammar.