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Seven copy-pasted statement-block loops collapse into
ParseBlock(terminators); five comma-separated expression-list loops
collapse into ParseExprList(close, allowEmpty), which also fixes
"arr[1 2] <- x" being silently accepted as arr[1,2] on the statement
path. Error recovery now lives in one place: syncToStatementStart skips
to the next statement-start/block-end token, so a bad statement no
longer swallows the first token of the following good one. Drop the
dead -1000/-1001 token check in ParsePrototypeArgs.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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emitPrototype now records each FUNCTION/PROCEDURE's pseudocode signature
(FuncSig: return type + per-param type/BYREF flag). CodeGen::
marshalCallArgs replaces the two verbatim-duplicated marshalling blocks
and dispatches on the declared signature instead of inferring BYREF from
pointer-typed LLVM params: BYVAL STRING params now receive the string
data pointer (no more runtime garbage), and BYVAL args are coerced to
the declared type (INTEGER->REAL args no longer emit invalid IR).
Top-level prototypes are pre-registered in compile(), so calls may
precede definitions; GenerateCall no longer fabricates i64 externs for
unknown names - an unregistered callee is a compile error. OUTPUT
reports an error when it cannot infer the expression type instead of
printing with the INTEGER format.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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All 11 builtins now live in one static {Name, Arity, ReturnTypeName}
table in CodeGen.cc: emitExpr checks arity against it (uniform
"Error: X expects N args" diagnostics) and getExprTypeInfo reads return
types from it, removing the duplicated hard-coded table.
LENGTH/MID/RIGHT/LEFT/LCASE/UCASE lose their lexer tokens and
ParseStringBuiltin; they parse as ordinary identifier calls exactly like
ASC/CHR/IS_NUM/NUM_TO_STR/STR_TO_NUM already did. Behavior note: these
six names are no longer reserved words.
AGENTS docs updated for the new builtin story and the batch-1 error
contract (exit codes, verifyModule, fixed descending FOR).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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ARCH.md holds the overview (pipeline, build/run, layout); details are
split into CONVENTIONS.md, EXTENDING.md, SUBSYSTEMS.md and PITFALLS.md.
All claims were verified against the source, most also empirically by
compiling and running test programs.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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