Mercurial > vim
diff src/vim9compile.c @ 21717:ef3b31d510d2 v8.2.1408
patch 8.2.1408: Vim9: type casting not supported
Commit: https://github.com/vim/vim/commit/64d662d5fc2ff8af4dbf399ff02aa9d711cc9312
Author: Bram Moolenaar <Bram@vim.org>
Date: Sun Aug 9 19:02:50 2020 +0200
patch 8.2.1408: Vim9: type casting not supported
Problem: Vim9: type casting not supported.
Solution: Introduce type casting.
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Sun, 09 Aug 2020 19:15:03 +0200 |
| parents | 571832713efa |
| children | caf0286cf02b |
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line diff
--- a/src/vim9compile.c +++ b/src/vim9compile.c @@ -3402,6 +3402,56 @@ error_white_both(char_u *op, int len) } /* + * <type>expr7: runtime type check / conversion + */ + static int +compile_expr7t(char_u **arg, cctx_T *cctx, ppconst_T *ppconst) +{ + type_T *want_type = NULL; + + // Recognize <type> + if (**arg == '<' && eval_isnamec1((*arg)[1])) + { + int called_emsg_before = called_emsg; + + ++*arg; + want_type = parse_type(arg, cctx->ctx_type_list); + if (called_emsg != called_emsg_before) + return FAIL; + + if (**arg != '>') + { + if (*skipwhite(*arg) == '>') + semsg(_(e_no_white_before), ">"); + else + emsg(_("E1104: Missing >")); + return FAIL; + } + ++*arg; + if (may_get_next_line_error(*arg - 1, arg, cctx) == FAIL) + return FAIL; + } + + if (compile_expr7(arg, cctx, ppconst) == FAIL) + return FAIL; + + if (want_type != NULL) + { + garray_T *stack = &cctx->ctx_type_stack; + type_T *actual = ((type_T **)stack->ga_data)[stack->ga_len - 1]; + + if (check_type(want_type, actual, FALSE) == FAIL) + { + generate_ppconst(cctx, ppconst); + if (need_type(actual, want_type, -1, cctx, FALSE) == FAIL) + return FAIL; + } + } + + return OK; +} + +/* * * number multiplication * / number division * % number modulo @@ -3414,7 +3464,7 @@ compile_expr6(char_u **arg, cctx_T *cctx int ppconst_used = ppconst->pp_used; // get the first expression - if (compile_expr7(arg, cctx, ppconst) == FAIL) + if (compile_expr7t(arg, cctx, ppconst) == FAIL) return FAIL; /* @@ -3441,7 +3491,7 @@ compile_expr6(char_u **arg, cctx_T *cctx return FAIL; // get the second expression - if (compile_expr7(arg, cctx, ppconst) == FAIL) + if (compile_expr7t(arg, cctx, ppconst) == FAIL) return FAIL; if (ppconst->pp_used == ppconst_used + 2