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Added EXIT opcode to make it possible to return exit codes to the shell. (0.21.4)

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This commit is contained in:
Johannes Findeisen 2025-10-04 13:02:29 +02:00
commit 9ac42c6ed1
8 changed files with 96 additions and 5 deletions
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19
src/parser.c
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@ -2070,6 +2070,25 @@ static void parse_simple_statement(Bytecode *bc, const char *src, size_t len, si
return;
}
/* exit statement: exit [expr]? */
if (strcmp(name, "exit") == 0) {
free(name);
skip_spaces(src, len, &local_pos);
size_t save_pos = local_pos;
if (emit_expression(bc, src, len, &local_pos)) {
/* expression result already on stack */
} else {
/* default exit code 0 */
local_pos = save_pos;
int ci = bytecode_add_constant(bc, make_int(0));
bytecode_add_instruction(bc, OP_LOAD_CONST, ci);
}
bytecode_add_instruction(bc, OP_EXIT, 0);
*pos = local_pos;
skip_to_eol(src, len, pos);
return;
}
/* break / continue */
if (strcmp(name, "break") == 0) {
free(name);