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Implement the housekeeping verbs, and stop the REPL spinning after an error

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NEW, CLR, CONT, SWAP, TRON, TROFF and HELP. None is in the Go reference, so
what each means here is recorded beside it.

Testing CONT turned up a hang that predates this: the runtime's error class is
deliberately sticky, and with run_finished_mode REPL every later step
re-entered REPL and printed READY -- overwriting the QUIT that end of input
had just set. An interactive session that hit one runtime error printed READY
forever instead of exiting.

RESTORE and RENUMBER are deferred with reasons; RESTORE turns out to need a
DATA pointer this port does not have, which is a defect in its own right.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
Andrew Kesterson
2026-07-31 12:07:50 -04:00
parent f4007d80d4
commit bfac13ff87
11 changed files with 658 additions and 1 deletions
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9
src/verbs.h
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@@ -28,6 +28,15 @@ akerr_ErrorContext AKERR_NOIGNORE *akbasic_parse_let(struct akbasic_Parser *pars
akerr_ErrorContext AKERR_NOIGNORE *akbasic_parse_poke(struct akbasic_Parser *parser, akbasic_ASTLeaf **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_parse_read(struct akbasic_Parser *parser, akbasic_ASTLeaf **dest);
/* Verb handlers -- src/runtime_housekeeping.c */
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_clr(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_cont(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_help(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_new(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_swap(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_troff(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_tron(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
/* Verb handlers -- src/runtime_commands.c */
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_auto(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);
akerr_ErrorContext AKERR_NOIGNORE *akbasic_cmd_data(struct akbasic_Runtime *obj, akbasic_ASTLeaf *expr, akbasic_Value *lval, akbasic_Value *rval, akbasic_Value **dest);