- Add syntax
- Desugars to if-else chain in HIR lowering (both compilers)
- No new HIR/C backend nodes needed — reuses hIf/hBinary/hBlock
- Supports integer, char, and enum tag dispatch
- Case body can be single statement (no braces required)
- Add statement for function-level deferred execution
- Deferred expressions run in LIFO order on function exit (return or implicit)
- Bootstrap: desugar defers in hir_lower.nim (inject before return + end of func)
- Selfhost: emit defers in c_backend.bux via CEmitter defer stack
- Both: add tkDefer token, skDefer AST node, hDefer HIR node
- Parser, lexer, sema, token files updated in both bootstrap/ and src/
Parser would hang (infinite loop) when encountering newline tokens
inside certain constructs because expect() returns without advancing
position when the expected token doesn't match.
Fixed 5 places in parseBaseType, parsePrimaryPattern, parseTypeParams,
parseParamList, and parseUseDecl by adding newline-skipping at the
start of each iteration.
Verified: compiler no longer hangs/crashes on all 3 real-world apps
from apps/ (boko-framework, jwt-pitbul, nexus).
- examples/borrow.bux: working borrow expression example
- tests/borrow_test.nim: add 4 new tests for borrow & @[Shared]
- parser.nim: fix borrow parsing order (& before mut)
- Build verified: example compiles and runs
dimgigov