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/* vi:set ts=8 sts=4 sw=4:
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*
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* VIM - Vi IMproved by Bram Moolenaar
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*
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* Do ":help uganda" in Vim to read copying and usage conditions.
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* Do ":help credits" in Vim to see a list of people who contributed.
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* See README.txt for an overview of the Vim source code.
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*/
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/*
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* ex_eval.c: functions for Ex command line for the +eval feature.
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*/
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#include "vim.h"
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#if defined(FEAT_EVAL) || defined(PROTO)
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static void free_msglist __ARGS((struct msglist *l));
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static int throw_exception __ARGS((void *, int, char_u *));
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static char_u *get_end_emsg __ARGS((struct condstack *cstack));
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/*
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* Exception handling terms:
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*
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* :try ":try" command \
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* ... try block |
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* :catch RE ":catch" command |
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* ... catch clause |- try conditional
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* :finally ":finally" command |
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* ... finally clause |
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* :endtry ":endtry" command /
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*
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* The try conditional may have any number of catch clauses and at most one
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* finally clause. A ":throw" command can be inside the try block, a catch
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* clause, the finally clause, or in a function called or script sourced from
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* there or even outside the try conditional. Try conditionals may be nested.
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*/
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/*
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* Configuration whether an exception is thrown on error or interrupt. When
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* the preprocessor macros below evaluate to FALSE, an error (did_emsg) or
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* interrupt (got_int) under an active try conditional terminates the script
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* after the non-active finally clauses of all active try conditionals have been
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* executed. Otherwise, errors and/or interrupts are converted into catchable
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* exceptions (did_throw additionally set), which terminate the script only if
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* not caught. For user exceptions, only did_throw is set. (Note: got_int can
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* be set asyncronously afterwards by a SIGINT, so did_throw && got_int is not
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* a reliant test that the exception currently being thrown is an interrupt
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* exception. Similarly, did_emsg can be set afterwards on an error in an
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* (unskipped) conditional command inside an inactive conditional, so did_throw
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* && did_emsg is not a reliant test that the exception currently being thrown
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* is an error exception.) - The macros can be defined as expressions checking
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* for a variable that is allowed to be changed during execution of a script.
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*/
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#if 0
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/* Expressions used for testing during the development phase. */
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# define THROW_ON_ERROR (!eval_to_number("$VIMNOERRTHROW"))
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# define THROW_ON_INTERRUPT (!eval_to_number("$VIMNOINTTHROW"))
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# define THROW_TEST
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#else
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/* Values used for the Vim release. */
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# define THROW_ON_ERROR TRUE
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# define THROW_ON_INTERRUPT TRUE
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#endif
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static void catch_exception __ARGS((except_T *excp));
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static void finish_exception __ARGS((except_T *excp));
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static void discard_exception __ARGS((except_T *excp, int was_finished));
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static void report_pending __ARGS((int action, int pending, void *value));
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/*
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* When several errors appear in a row, setting "force_abort" is delayed until
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* the failing command returned. "cause_abort" is set to TRUE meanwhile, in
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* order to indicate that situation. This is useful when "force_abort" was set
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* during execution of a function call from an expression: the aborting of the
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* expression evaluation is done without producing any error messages, but all
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* error messages on parsing errors during the expression evaluation are given
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* (even if a try conditional is active).
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*/
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static int cause_abort = FALSE;
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/*
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* Return TRUE when immediately aborting on error, or when an interrupt
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* occurred or an exception was thrown but not caught. Use for ":{range}call"
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* to check whether an aborted function that does not handle a range itself
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* should be called again for the next line in the range. Also used for
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* cancelling expression evaluation after a function call caused an immediate
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* abort. Note that the first emsg() call temporarily resets "force_abort"
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* until the throw point for error messages has been reached. That is, during
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* cancellation of an expression evaluation after an aborting function call or
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* due to a parsing error, aborting() always returns the same value.
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*/
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int
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aborting()
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{
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return (did_emsg && force_abort) || got_int || did_throw;
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}
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/*
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* The value of "force_abort" is temporarily reset by the first emsg() call
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* during an expression evaluation, and "cause_abort" is used instead. It might
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* be necessary to restore "force_abort" even before the throw point for the
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* error message has been reached. update_force_abort() should be called then.
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*/
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void
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update_force_abort()
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{
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if (cause_abort)
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force_abort = TRUE;
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}
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/*
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* Return TRUE if a command with a subcommand resulting in "retcode" should
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* abort the script processing. Can be used to suppress an autocommand after
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* execution of a failing subcommand as long as the error message has not been
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* displayed and actually caused the abortion.
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*/
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int
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should_abort(retcode)
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int retcode;
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{
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return ((retcode == FAIL && trylevel != 0 && !emsg_silent) || aborting());
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}
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/*
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* Return TRUE if a function with the "abort" flag should not be considered
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* ended on an error. This means that parsing commands is continued in order
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* to find finally clauses to be executed, and that some errors in skipped
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* commands are still reported.
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*/
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int
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aborted_in_try()
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{
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/* This function is only called after an error. In this case, "force_abort"
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* determines whether searching for finally clauses is necessary. */
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return force_abort;
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}
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/*
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* cause_errthrow(): Cause a throw of an error exception if appropriate.
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* Return TRUE if the error message should not be displayed by emsg().
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* Sets "ignore", if the emsg() call should be ignored completely.
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*
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* When several messages appear in the same command, the first is usually the
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* most specific one and used as the exception value. The "severe" flag can be
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* set to TRUE, if a later but severer message should be used instead.
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*/
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int
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cause_errthrow(mesg, severe, ignore)
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char_u *mesg;
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int severe;
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int *ignore;
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{
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struct msglist *elem;
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struct msglist **plist;
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/*
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* Do nothing when displaying the interrupt message or reporting an
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* uncaught exception (which has already been discarded then) at the top
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* level. Also when no exception can be thrown. The message will be
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* displayed by emsg().
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*/
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if (suppress_errthrow)
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return FALSE;
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/*
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* If emsg() has not been called previously, temporarily reset
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* "force_abort" until the throw point for error messages has been
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* reached. This ensures that aborting() returns the same value for all
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* errors that appear in the same command. This means particularly that
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* for parsing errors during expression evaluation emsg() will be called
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* multiply, even when the expression is evaluated from a finally clause
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* that was activated due to an aborting error, interrupt, or exception.
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*/
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if (!did_emsg)
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{
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cause_abort = force_abort;
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force_abort = FALSE;
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}
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/*
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* If no try conditional is active and no exception is being thrown and
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* there has not been an error in a try conditional or a throw so far, do
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* nothing (for compatibility of non-EH scripts). The message will then
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* be displayed by emsg(). When ":silent!" was used and we are not
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* currently throwing an exception, do nothing. The message text will
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* then be stored to v:errmsg by emsg() without displaying it.
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*/
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if (((trylevel == 0 && !cause_abort) || emsg_silent) && !did_throw)
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return FALSE;
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/*
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* Ignore an interrupt message when inside a try conditional or when an
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* exception is being thrown or when an error in a try conditional or
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* throw has been detected previously. This is important in order that an
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* interrupt exception is catchable by the innermost try conditional and
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* not replaced by an interrupt message error exception.
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*/
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if (mesg == (char_u *)_(e_interr))
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{
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*ignore = TRUE;
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return TRUE;
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}
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/*
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* Ensure that all commands in nested function calls and sourced files
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* are aborted immediately.
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*/
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cause_abort = TRUE;
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/*
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* When an exception is being thrown, some commands (like conditionals) are
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* not skipped. Errors in those commands may affect what of the subsequent
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* commands are regarded part of catch and finally clauses. Catching the
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* exception would then cause execution of commands not intended by the
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* user, who wouldn't even get aware of the problem. Therefor, discard the
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* exception currently being thrown to prevent it from being caught. Just
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* execute finally clauses and terminate.
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*/
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if (did_throw)
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{
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/* When discarding an interrupt exception, reset got_int to prevent the
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* same interrupt being converted to an exception again and discarding
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* the error exception we are about to throw here. */
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if (current_exception->type == ET_INTERRUPT)
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got_int = FALSE;
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discard_current_exception();
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}
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#ifdef THROW_TEST
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if (!THROW_ON_ERROR)
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{
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/*
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* Print error message immediately without searching for a matching
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* catch clause; just finally clauses are executed before the script
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* is terminated.
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*/
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return FALSE;
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}
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else
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#endif
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{
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/*
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* Prepare the throw of an error exception, so that everything will
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* be aborted (except for executing finally clauses), until the error
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* exception is caught; if still uncaught at the top level, the error
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* message will be displayed and the script processing terminated
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* then. - This function has no access to the conditional stack.
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* Thus, the actual throw is made after the failing command has
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* returned. - Throw only the first of several errors in a row, except
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* a severe error is following.
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*/
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if (msg_list != NULL)
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{
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plist = msg_list;
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while (*plist != NULL)
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plist = &(*plist)->next;
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elem = (struct msglist *)alloc((unsigned)sizeof(struct msglist));
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if (elem == NULL)
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{
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suppress_errthrow = TRUE;
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EMSG(_(e_outofmem));
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}
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else
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{
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elem->msg = vim_strsave(mesg);
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if (elem->msg == NULL)
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{
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vim_free(elem);
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suppress_errthrow = TRUE;
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EMSG(_(e_outofmem));
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}
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else
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{
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elem->next = NULL;
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elem->throw_msg = NULL;
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*plist = elem;
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if (plist == msg_list || severe)
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{
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char_u *tmsg;
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/* Skip the extra "Vim " prefix for message "E458". */
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tmsg = elem->msg;
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if (STRNCMP(tmsg, "Vim E", 5) == 0
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&& VIM_ISDIGIT(tmsg[5])
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&& VIM_ISDIGIT(tmsg[6])
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&& VIM_ISDIGIT(tmsg[7])
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&& tmsg[8] == ':'
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&& tmsg[9] == ' ')
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(*msg_list)->throw_msg = &tmsg[4];
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else
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(*msg_list)->throw_msg = tmsg;
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}
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}
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}
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}
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return TRUE;
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}
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}
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/*
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* Free a "msg_list" and the messages it contains.
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*/
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static void
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306 |
free_msglist(l)
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struct msglist *l;
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{
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309 |
struct msglist *messages, *next;
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messages = l;
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while (messages != NULL)
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{
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next = messages->next;
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vim_free(messages->msg);
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vim_free(messages);
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messages = next;
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}
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}
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/*
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322 |
* Throw the message specified in the call to cause_errthrow() above as an
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323 |
* error exception. If cstack is NULL, postpone the throw until do_cmdline()
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324 |
* has returned (see do_one_cmd()).
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*/
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326 |
void
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327 |
do_errthrow(cstack, cmdname)
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328 |
struct condstack *cstack;
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329 |
char_u *cmdname;
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330 |
{
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331 |
/*
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332 |
* Ensure that all commands in nested function calls and sourced files
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* are aborted immediately.
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*/
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335 |
if (cause_abort)
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336 |
{
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cause_abort = FALSE;
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force_abort = TRUE;
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339 |
}
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340 |
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341 |
/* If no exception is to be thrown or the conversion should be done after
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342 |
* returning to a previous invocation of do_one_cmd(), do nothing. */
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343 |
if (msg_list == NULL || *msg_list == NULL)
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344 |
return;
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345 |
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346 |
if (throw_exception(*msg_list, ET_ERROR, cmdname) == FAIL)
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347 |
free_msglist(*msg_list);
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348 |
else
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349 |
{
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350 |
if (cstack != NULL)
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351 |
do_throw(cstack);
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else
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353 |
need_rethrow = TRUE;
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354 |
}
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355 |
*msg_list = NULL;
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356 |
}
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357 |
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358 |
/*
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359 |
* do_intthrow(): Replace the current exception by an interrupt or interrupt
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|
360 |
* exception if appropriate. Return TRUE if the current exception is discarded,
|
|
|
361 |
* FALSE otherwise.
|
|
|
362 |
*/
|
|
|
363 |
int
|
|
|
364 |
do_intthrow(cstack)
|
|
|
365 |
struct condstack *cstack;
|
|
|
366 |
{
|
|
|
367 |
/*
|
|
|
368 |
* If no interrupt occurred or no try conditional is active and no exception
|
|
|
369 |
* is being thrown, do nothing (for compatibility of non-EH scripts).
|
|
|
370 |
*/
|
|
|
371 |
if (!got_int || (trylevel == 0 && !did_throw))
|
|
|
372 |
return FALSE;
|
|
|
373 |
|
|
|
374 |
#ifdef THROW_TEST /* avoid warning for condition always true */
|
|
|
375 |
if (!THROW_ON_INTERRUPT)
|
|
|
376 |
{
|
|
|
377 |
/*
|
|
|
378 |
* The interrupt aborts everything except for executing finally clauses.
|
|
|
379 |
* Discard any user or error or interrupt exception currently being
|
|
|
380 |
* thrown.
|
|
|
381 |
*/
|
|
|
382 |
if (did_throw)
|
|
|
383 |
discard_current_exception();
|
|
|
384 |
}
|
|
|
385 |
else
|
|
|
386 |
#endif
|
|
|
387 |
{
|
|
|
388 |
/*
|
|
|
389 |
* Throw an interrupt exception, so that everything will be aborted
|
|
|
390 |
* (except for executing finally clauses), until the interrupt exception
|
|
|
391 |
* is caught; if still uncaught at the top level, the script processing
|
|
|
392 |
* will be terminated then. - If an interrupt exception is already
|
|
|
393 |
* being thrown, do nothing.
|
|
|
394 |
*
|
|
|
395 |
*/
|
|
|
396 |
if (did_throw)
|
|
|
397 |
{
|
|
|
398 |
if (current_exception->type == ET_INTERRUPT)
|
|
|
399 |
return FALSE;
|
|
|
400 |
|
|
|
401 |
/* An interrupt exception replaces any user or error exception. */
|
|
|
402 |
discard_current_exception();
|
|
|
403 |
}
|
|
|
404 |
if (throw_exception("Vim:Interrupt", ET_INTERRUPT, NULL) != FAIL)
|
|
|
405 |
do_throw(cstack);
|
|
|
406 |
}
|
|
|
407 |
|
|
|
408 |
return TRUE;
|
|
|
409 |
}
|
|
|
410 |
|
|
|
411 |
|
|
|
412 |
/*
|
|
|
413 |
* Throw a new exception. Return FAIL when out of memory or it was tried to
|
|
|
414 |
* throw an illegal user exception. "value" is the exception string for a user
|
|
|
415 |
* or interrupt exception, or points to a message list in case of an error
|
|
|
416 |
* exception.
|
|
|
417 |
*/
|
|
|
418 |
static int
|
|
|
419 |
throw_exception(value, type, cmdname)
|
|
|
420 |
void *value;
|
|
|
421 |
int type;
|
|
|
422 |
char_u *cmdname;
|
|
|
423 |
{
|
|
|
424 |
except_T *excp;
|
|
|
425 |
char_u *p, *mesg, *val;
|
|
|
426 |
int cmdlen;
|
|
|
427 |
|
|
|
428 |
/*
|
|
|
429 |
* Disallow faking Interrupt or error exceptions as user exceptions. They
|
|
|
430 |
* would be treated differently from real interrupt or error exceptions when
|
|
|
431 |
* no active try block is found, see do_cmdline().
|
|
|
432 |
*/
|
|
|
433 |
if (type == ET_USER)
|
|
|
434 |
{
|
|
|
435 |
if (STRNCMP((char_u *)value, "Vim", 3) == 0 &&
|
|
|
436 |
(((char_u *)value)[3] == NUL || ((char_u *)value)[3] == ':' ||
|
|
|
437 |
((char_u *)value)[3] == '('))
|
|
|
438 |
{
|
|
|
439 |
EMSG(_("E608: Cannot :throw exceptions with 'Vim' prefix"));
|
|
|
440 |
goto fail;
|
|
|
441 |
}
|
|
|
442 |
}
|
|
|
443 |
|
|
|
444 |
excp = (except_T *)alloc((unsigned)sizeof(except_T));
|
|
|
445 |
if (excp == NULL)
|
|
|
446 |
goto nomem;
|
|
|
447 |
|
|
|
448 |
if (type == ET_ERROR)
|
|
|
449 |
{
|
|
|
450 |
/* Store the original message and prefix the exception value with
|
|
|
451 |
* "Vim:" or, if a command name is given, "Vim(cmdname):". */
|
|
|
452 |
excp->messages = (struct msglist *)value;
|
|
|
453 |
mesg = excp->messages->throw_msg;
|
|
|
454 |
if (cmdname != NULL && *cmdname != NUL)
|
|
|
455 |
{
|
|
|
456 |
cmdlen = (int)STRLEN(cmdname);
|
|
|
457 |
excp->value = vim_strnsave((char_u *)"Vim(",
|
|
|
458 |
4 + cmdlen + 2 + (int)STRLEN(mesg));
|
|
|
459 |
if (excp->value == NULL)
|
|
|
460 |
goto nomem;
|
|
|
461 |
STRCPY(&excp->value[4], cmdname);
|
|
|
462 |
STRCPY(&excp->value[4 + cmdlen], "):");
|
|
|
463 |
val = excp->value + 4 + cmdlen + 2;
|
|
|
464 |
}
|
|
|
465 |
else
|
|
|
466 |
{
|
|
|
467 |
excp->value = vim_strnsave((char_u *)"Vim:", 4 + (int)STRLEN(mesg));
|
|
|
468 |
if (excp->value == NULL)
|
|
|
469 |
goto nomem;
|
|
|
470 |
val = excp->value + 4;
|
|
|
471 |
}
|
|
|
472 |
|
|
|
473 |
/* msg_add_fname may have been used to prefix the message with a file
|
|
|
474 |
* name in quotes. In the exception value, put the file name in
|
|
|
475 |
* parentheses and move it to the end. */
|
|
|
476 |
for (p = mesg; ; p++)
|
|
|
477 |
{
|
|
|
478 |
if (*p == NUL
|
|
|
479 |
|| (*p == 'E'
|
|
|
480 |
&& VIM_ISDIGIT(p[1])
|
|
|
481 |
&& (p[2] == ':'
|
|
|
482 |
|| (VIM_ISDIGIT(p[2])
|
|
|
483 |
&& (p[3] == ':'
|
|
|
484 |
|| (VIM_ISDIGIT(p[3])
|
|
|
485 |
&& p[4] == ':'))))))
|
|
|
486 |
{
|
|
|
487 |
if (*p == NUL || p == mesg)
|
|
|
488 |
STRCAT(val, mesg); /* 'E123' missing or at beginning */
|
|
|
489 |
else
|
|
|
490 |
{
|
|
|
491 |
/* '"filename" E123: message text' */
|
|
|
492 |
if (mesg[0] != '"' || p-2 < &mesg[1] ||
|
|
|
493 |
p[-2] != '"' || p[-1] != ' ')
|
|
|
494 |
/* "E123:" is part of the file name. */
|
|
|
495 |
continue;
|
|
|
496 |
|
|
|
497 |
STRCAT(val, p);
|
|
|
498 |
p[-2] = NUL;
|
|
|
499 |
sprintf((char *)(val + STRLEN(p)), " (%s)", &mesg[1]);
|
|
|
500 |
p[-2] = '"';
|
|
|
501 |
}
|
|
|
502 |
break;
|
|
|
503 |
}
|
|
|
504 |
}
|
|
|
505 |
}
|
|
|
506 |
else
|
|
|
507 |
excp->value = value;
|
|
|
508 |
|
|
|
509 |
excp->type = type;
|
|
|
510 |
excp->throw_name = vim_strsave(sourcing_name == NULL
|
|
|
511 |
? (char_u *)"" : sourcing_name);
|
|
|
512 |
if (excp->throw_name == NULL)
|
|
|
513 |
{
|
|
|
514 |
if (type == ET_ERROR)
|
|
|
515 |
vim_free(excp->value);
|
|
|
516 |
goto nomem;
|
|
|
517 |
}
|
|
|
518 |
excp->throw_lnum = sourcing_lnum;
|
|
|
519 |
|
|
|
520 |
if (p_verbose >= 13 || debug_break_level > 0)
|
|
|
521 |
{
|
|
|
522 |
int save_msg_silent = msg_silent;
|
|
|
523 |
|
|
|
524 |
if (debug_break_level > 0)
|
|
|
525 |
msg_silent = FALSE; /* display messages */
|
|
|
526 |
else
|
|
|
527 |
verbose_enter();
|
|
|
528 |
++no_wait_return;
|
|
|
529 |
if (debug_break_level > 0 || *p_vfile == NUL)
|
|
|
530 |
msg_scroll = TRUE; /* always scroll up, don't overwrite */
|
|
|
531 |
|
|
|
532 |
smsg((char_u *)_("Exception thrown: %s"), excp->value);
|
|
|
533 |
msg_puts((char_u *)"\n"); /* don't overwrite this either */
|
|
|
534 |
|
|
|
535 |
if (debug_break_level > 0 || *p_vfile == NUL)
|
|
|
536 |
cmdline_row = msg_row;
|
|
|
537 |
--no_wait_return;
|
|
|
538 |
if (debug_break_level > 0)
|
|
|
539 |
msg_silent = save_msg_silent;
|
|
|
540 |
else
|
|
|
541 |
verbose_leave();
|
|
|
542 |
}
|
|
|
543 |
|
|
|
544 |
current_exception = excp;
|
|
|
545 |
return OK;
|
|
|
546 |
|
|
|
547 |
nomem:
|
|
|
548 |
vim_free(excp);
|
|
|
549 |
suppress_errthrow = TRUE;
|
|
|
550 |
EMSG(_(e_outofmem));
|
|
|
551 |
fail:
|
|
|
552 |
current_exception = NULL;
|
|
|
553 |
return FAIL;
|
|
|
554 |
}
|
|
|
555 |
|
|
|
556 |
/*
|
|
|
557 |
* Discard an exception. "was_finished" is set when the exception has been
|
|
|
558 |
* caught and the catch clause has been ended normally.
|
|
|
559 |
*/
|
|
|
560 |
static void
|
|
|
561 |
discard_exception(excp, was_finished)
|
|
|
562 |
except_T *excp;
|
|
|
563 |
int was_finished;
|
|
|
564 |
{
|
|
|
565 |
char_u *saved_IObuff;
|
|
|
566 |
|
|
|
567 |
if (excp == NULL)
|
|
|
568 |
{
|
|
|
569 |
EMSG(_(e_internal));
|
|
|
570 |
return;
|
|
|
571 |
}
|
|
|
572 |
|
|
|
573 |
if (p_verbose >= 13 || debug_break_level > 0)
|
|
|
574 |
{
|
|
|
575 |
int save_msg_silent = msg_silent;
|
|
|
576 |
|
|
|
577 |
saved_IObuff = vim_strsave(IObuff);
|
|
|
578 |
if (debug_break_level > 0)
|
|
|
579 |
msg_silent = FALSE; /* display messages */
|
|
|
580 |
else
|
|
|
581 |
verbose_enter();
|
|
|
582 |
++no_wait_return;
|
|
|
583 |
if (debug_break_level > 0 || *p_vfile == NUL)
|
|
|
584 |
msg_scroll = TRUE; /* always scroll up, don't overwrite */
|
|
|
585 |
smsg(was_finished
|
|
|
586 |
? (char_u *)_("Exception finished: %s")
|
|
|
587 |
: (char_u *)_("Exception discarded: %s"),
|
|
|
588 |
excp->value);
|
|
|
589 |
msg_puts((char_u *)"\n"); /* don't overwrite this either */
|
|
|
590 |
if (debug_break_level > 0 || *p_vfile == NUL)
|
|
|
591 |
cmdline_row = msg_row;
|
|
|
592 |
--no_wait_return;
|
|
|
593 |
if (debug_break_level > 0)
|
|
|
594 |
msg_silent = save_msg_silent;
|
|
|
595 |
else
|
|
|
596 |
verbose_leave();
|
|
|
597 |
STRCPY(IObuff, saved_IObuff);
|
|
|
598 |
vim_free(saved_IObuff);
|
|
|
599 |
}
|
|
|
600 |
if (excp->type != ET_INTERRUPT)
|
|
|
601 |
vim_free(excp->value);
|
|
|
602 |
if (excp->type == ET_ERROR)
|
|
|
603 |
free_msglist(excp->messages);
|
|
|
604 |
vim_free(excp->throw_name);
|
|
|
605 |
vim_free(excp);
|
|
|
606 |
}
|
|
|
607 |
|
|
|
608 |
/*
|
|
|
609 |
* Discard the exception currently being thrown.
|
|
|
610 |
*/
|
|
|
611 |
void
|
|
|
612 |
discard_current_exception()
|
|
|
613 |
{
|
|
|
614 |
discard_exception(current_exception, FALSE);
|
|
|
615 |
current_exception = NULL;
|
|
|
616 |
did_throw = FALSE;
|
|
|
617 |
need_rethrow = FALSE;
|
|
|
618 |
}
|
|
|
619 |
|
|
|
620 |
/*
|
|
|
621 |
* Put an exception on the caught stack.
|
|
|
622 |
*/
|
|
|
623 |
static void
|
|
|
624 |
catch_exception(excp)
|
|
|
625 |
except_T *excp;
|
|
|
626 |
{
|
|
|
627 |
excp->caught = caught_stack;
|
|
|
628 |
caught_stack = excp;
|
|
|
629 |
set_vim_var_string(VV_EXCEPTION, excp->value, -1);
|
|
|
630 |
if (*excp->throw_name != NUL)
|
|
|
631 |
{
|
|
|
632 |
if (excp->throw_lnum != 0)
|
|
|
633 |
vim_snprintf((char *)IObuff, IOSIZE, _("%s, line %ld"),
|
|
|
634 |
excp->throw_name, (long)excp->throw_lnum);
|
|
|
635 |
else
|
|
|
636 |
vim_snprintf((char *)IObuff, IOSIZE, "%s", excp->throw_name);
|
|
|
637 |
set_vim_var_string(VV_THROWPOINT, IObuff, -1);
|
|
|
638 |
}
|
|
|
639 |
else
|
|
|
640 |
/* throw_name not set on an exception from a command that was typed. */
|
|
|
641 |
set_vim_var_string(VV_THROWPOINT, NULL, -1);
|
|
|
642 |
|
|
|
643 |
if (p_verbose >= 13 || debug_break_level > 0)
|
|
|
644 |
{
|
|
|
645 |
int save_msg_silent = msg_silent;
|
|
|
646 |
|
|
|
647 |
if (debug_break_level > 0)
|
|
|
648 |
msg_silent = FALSE; /* display messages */
|
|
|
649 |
else
|
|
|
650 |
verbose_enter();
|
|
|
651 |
++no_wait_return;
|
|
|
652 |
if (debug_break_level > 0 || *p_vfile == NUL)
|
|
|
653 |
msg_scroll = TRUE; /* always scroll up, don't overwrite */
|
|
|
654 |
|
|
|
655 |
smsg((char_u *)_("Exception caught: %s"), excp->value);
|
|
|
656 |
msg_puts((char_u *)"\n"); /* don't overwrite this either */
|
|
|
657 |
|
|
|
658 |
if (debug_break_level > 0 || *p_vfile == NUL)
|
|
|
659 |
cmdline_row = msg_row;
|
|
|
660 |
--no_wait_return;
|
|
|
661 |
if (debug_break_level > 0)
|
|
|
662 |
msg_silent = save_msg_silent;
|
|
|
663 |
else
|
|
|
664 |
verbose_leave();
|
|
|
665 |
}
|
|
|
666 |
}
|
|
|
667 |
|
|
|
668 |
/*
|
|
|
669 |
* Remove an exception from the caught stack.
|
|
|
670 |
*/
|
|
|
671 |
static void
|
|
|
672 |
finish_exception(excp)
|
|
|
673 |
except_T *excp;
|
|
|
674 |
{
|
|
|
675 |
if (excp != caught_stack)
|
|
|
676 |
EMSG(_(e_internal));
|
|
|
677 |
caught_stack = caught_stack->caught;
|
|
|
678 |
if (caught_stack != NULL)
|
|
|
679 |
{
|
|
|
680 |
set_vim_var_string(VV_EXCEPTION, caught_stack->value, -1);
|
|
|
681 |
if (*caught_stack->throw_name != NUL)
|
|
|
682 |
{
|
|
|
683 |
if (caught_stack->throw_lnum != 0)
|
|
|
684 |
vim_snprintf((char *)IObuff, IOSIZE,
|
|
|
685 |
_("%s, line %ld"), caught_stack->throw_name,
|
|
|
686 |
(long)caught_stack->throw_lnum);
|
|
|
687 |
else
|
|
|
688 |
vim_snprintf((char *)IObuff, IOSIZE, "%s",
|
|
|
689 |
caught_stack->throw_name);
|
|
|
690 |
set_vim_var_string(VV_THROWPOINT, IObuff, -1);
|
|
|
691 |
}
|
|
|
692 |
else
|
|
|
693 |
/* throw_name not set on an exception from a command that was
|
|
|
694 |
* typed. */
|
|
|
695 |
set_vim_var_string(VV_THROWPOINT, NULL, -1);
|
|
|
696 |
}
|
|
|
697 |
else
|
|
|
698 |
{
|
|
|
699 |
set_vim_var_string(VV_EXCEPTION, NULL, -1);
|
|
|
700 |
set_vim_var_string(VV_THROWPOINT, NULL, -1);
|
|
|
701 |
}
|
|
|
702 |
|
|
|
703 |
/* Discard the exception, but use the finish message for 'verbose'. */
|
|
|
704 |
discard_exception(excp, TRUE);
|
|
|
705 |
}
|
|
|
706 |
|
|
|
707 |
/*
|
|
|
708 |
* Flags specifying the message displayed by report_pending.
|
|
|
709 |
*/
|
|
|
710 |
#define RP_MAKE 0
|
|
|
711 |
#define RP_RESUME 1
|
|
|
712 |
#define RP_DISCARD 2
|
|
|
713 |
|
|
|
714 |
/*
|
|
|
715 |
* Report information about something pending in a finally clause if required by
|
|
|
716 |
* the 'verbose' option or when debugging. "action" tells whether something is
|
|
|
717 |
* made pending or something pending is resumed or discarded. "pending" tells
|
|
|
718 |
* what is pending. "value" specifies the return value for a pending ":return"
|
|
|
719 |
* or the exception value for a pending exception.
|
|
|
720 |
*/
|
|
|
721 |
static void
|
|
|
722 |
report_pending(action, pending, value)
|
|
|
723 |
int action;
|
|
|
724 |
int pending;
|
|
|
725 |
void *value;
|
|
|
726 |
{
|
|
|
727 |
char_u *mesg;
|
|
|
728 |
char *s;
|
|
|
729 |
int save_msg_silent;
|
|
|
730 |
|
|
|
731 |
|
|
|
732 |
switch (action)
|
|
|
733 |
{
|
|
|
734 |
case RP_MAKE:
|
|
|
735 |
mesg = (char_u *)_("%s made pending");
|
|
|
736 |
break;
|
|
|
737 |
case RP_RESUME:
|
|
|
738 |
mesg = (char_u *)_("%s resumed");
|
|
|
739 |
break;
|
|
|
740 |
/* case RP_DISCARD: */
|
|
|
741 |
default:
|
|
|
742 |
mesg = (char_u *)_("%s discarded");
|
|
|
743 |
break;
|
|
|
744 |
}
|
|
|
745 |
|
|
|
746 |
switch (pending)
|
|
|
747 |
{
|
|
|
748 |
case CSTP_NONE:
|
|
|
749 |
return;
|
|
|
750 |
|
|
|
751 |
case CSTP_CONTINUE:
|
|
|
752 |
s = ":continue";
|
|
|
753 |
break;
|
|
|
754 |
case CSTP_BREAK:
|
|
|
755 |
s = ":break";
|
|
|
756 |
break;
|
|
|
757 |
case CSTP_FINISH:
|
|
|
758 |
s = ":finish";
|
|
|
759 |
break;
|
|
|
760 |
case CSTP_RETURN:
|
|
|
761 |
/* ":return" command producing value, allocated */
|
|
|
762 |
s = (char *)get_return_cmd(value);
|
|
|
763 |
break;
|
|
|
764 |
|
|
|
765 |
default:
|
|
|
766 |
if (pending & CSTP_THROW)
|
|
|
767 |
{
|
|
|
768 |
vim_snprintf((char *)IObuff, IOSIZE,
|
|
|
769 |
(char *)mesg, _("Exception"));
|
|
|
770 |
mesg = vim_strnsave(IObuff, (int)STRLEN(IObuff) + 4);
|
|
|
771 |
STRCAT(mesg, ": %s");
|
|
|
772 |
s = (char *)((except_T *)value)->value;
|
|
|
773 |
}
|
|
|
774 |
else if ((pending & CSTP_ERROR) && (pending & CSTP_INTERRUPT))
|
|
|
775 |
s = _("Error and interrupt");
|
|
|
776 |
else if (pending & CSTP_ERROR)
|
|
|
777 |
s = _("Error");
|
|
|
778 |
else /* if (pending & CSTP_INTERRUPT) */
|
|
|
779 |
s = _("Interrupt");
|
|
|
780 |
}
|
|
|
781 |
|
|
|
782 |
save_msg_silent = msg_silent;
|
|
|
783 |
if (debug_break_level > 0)
|
|
|
784 |
msg_silent = FALSE; /* display messages */
|
|
|
785 |
++no_wait_return;
|
|
|
786 |
msg_scroll = TRUE; /* always scroll up, don't overwrite */
|
|
|
787 |
smsg(mesg, (char_u *)s);
|
|
|
788 |
msg_puts((char_u *)"\n"); /* don't overwrite this either */
|
|
|
789 |
cmdline_row = msg_row;
|
|
|
790 |
--no_wait_return;
|
|
|
791 |
if (debug_break_level > 0)
|
|
|
792 |
msg_silent = save_msg_silent;
|
|
|
793 |
|
|
|
794 |
if (pending == CSTP_RETURN)
|
|
|
795 |
vim_free(s);
|
|
|
796 |
else if (pending & CSTP_THROW)
|
|
|
797 |
vim_free(mesg);
|
|
|
798 |
}
|
|
|
799 |
|
|
|
800 |
/*
|
|
|
801 |
* If something is made pending in a finally clause, report it if required by
|
|
|
802 |
* the 'verbose' option or when debugging.
|
|
|
803 |
*/
|
|
|
804 |
void
|
|
|
805 |
report_make_pending(pending, value)
|
|
|
806 |
int pending;
|
|
|
807 |
void *value;
|
|
|
808 |
{
|
|
|
809 |
if (p_verbose >= 14 || debug_break_level > 0)
|
|
|
810 |
{
|
|
|
811 |
if (debug_break_level <= 0)
|
|
|
812 |
verbose_enter();
|
|
|
813 |
report_pending(RP_MAKE, pending, value);
|
|
|
814 |
if (debug_break_level <= 0)
|
|
|
815 |
verbose_leave();
|
|
|
816 |
}
|
|
|
817 |
}
|
|
|
818 |
|
|
|
819 |
/*
|
|
|
820 |
* If something pending in a finally clause is resumed at the ":endtry", report
|
|
|
821 |
* it if required by the 'verbose' option or when debugging.
|
|
|
822 |
*/
|
|
|
823 |
void
|
|
|
824 |
report_resume_pending(pending, value)
|
|
|
825 |
int pending;
|
|
|
826 |
void *value;
|
|
|
827 |
{
|
|
|
828 |
if (p_verbose >= 14 || debug_break_level > 0)
|
|
|
829 |
{
|
|
|
830 |
if (debug_break_level <= 0)
|
|
|
831 |
verbose_enter();
|
|
|
832 |
report_pending(RP_RESUME, pending, value);
|
|
|
833 |
if (debug_break_level <= 0)
|
|
|
834 |
verbose_leave();
|
|
|
835 |
}
|
|
|
836 |
}
|
|
|
837 |
|
|
|
838 |
/*
|
|
|
839 |
* If something pending in a finally clause is discarded, report it if required
|
|
|
840 |
* by the 'verbose' option or when debugging.
|
|
|
841 |
*/
|
|
|
842 |
void
|
|
|
843 |
report_discard_pending(pending, value)
|
|
|
844 |
int pending;
|
|
|
845 |
void *value;
|
|
|
846 |
{
|
|
|
847 |
if (p_verbose >= 14 || debug_break_level > 0)
|
|
|
848 |
{
|
|
|
849 |
if (debug_break_level <= 0)
|
|
|
850 |
verbose_enter();
|
|
|
851 |
report_pending(RP_DISCARD, pending, value);
|
|
|
852 |
if (debug_break_level <= 0)
|
|
|
853 |
verbose_leave();
|
|
|
854 |
}
|
|
|
855 |
}
|
|
|
856 |
|
|
|
857 |
|
|
|
858 |
/*
|
|
|
859 |
* ":if".
|
|
|
860 |
*/
|
|
|
861 |
void
|
|
|
862 |
ex_if(eap)
|
|
|
863 |
exarg_T *eap;
|
|
|
864 |
{
|
|
|
865 |
int error;
|
|
|
866 |
int skip;
|
|
|
867 |
int result;
|
|
|
868 |
struct condstack *cstack = eap->cstack;
|
|
|
869 |
|
|
|
870 |
if (cstack->cs_idx == CSTACK_LEN - 1)
|
|
|
871 |
eap->errmsg = (char_u *)N_("E579: :if nesting too deep");
|
|
|
872 |
else
|
|
|
873 |
{
|
|
|
874 |
++cstack->cs_idx;
|
|
|
875 |
cstack->cs_flags[cstack->cs_idx] = 0;
|
|
|
876 |
|
|
|
877 |
/*
|
|
|
878 |
* Don't do something after an error, interrupt, or throw, or when there
|
|
|
879 |
* is a surrounding conditional and it was not active.
|
|
|
880 |
*/
|
|
|
881 |
skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0
|
|
|
882 |
&& !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE));
|
|
|
883 |
|
|
|
884 |
result = eval_to_bool(eap->arg, &error, &eap->nextcmd, skip);
|
|
|
885 |
|
|
|
886 |
if (!skip && !error)
|
|
|
887 |
{
|
|
|
888 |
if (result)
|
|
|
889 |
cstack->cs_flags[cstack->cs_idx] = CSF_ACTIVE | CSF_TRUE;
|
|
|
890 |
}
|
|
|
891 |
else
|
|
|
892 |
/* set TRUE, so this conditional will never get active */
|
|
|
893 |
cstack->cs_flags[cstack->cs_idx] = CSF_TRUE;
|
|
|
894 |
}
|
|
|
895 |
}
|
|
|
896 |
|
|
|
897 |
/*
|
|
|
898 |
* ":endif".
|
|
|
899 |
*/
|
|
|
900 |
void
|
|
|
901 |
ex_endif(eap)
|
|
|
902 |
exarg_T *eap;
|
|
|
903 |
{
|
|
|
904 |
did_endif = TRUE;
|
|
|
905 |
if (eap->cstack->cs_idx < 0
|
|
|
906 |
|| (eap->cstack->cs_flags[eap->cstack->cs_idx]
|
|
|
907 |
& (CSF_WHILE | CSF_FOR | CSF_TRY)))
|
|
|
908 |
eap->errmsg = (char_u *)N_("E580: :endif without :if");
|
|
|
909 |
else
|
|
|
910 |
{
|
|
|
911 |
/*
|
|
|
912 |
* When debugging or a breakpoint was encountered, display the debug
|
|
|
913 |
* prompt (if not already done). This shows the user that an ":endif"
|
|
|
914 |
* is executed when the ":if" or a previous ":elseif" was not TRUE.
|
|
|
915 |
* Handle a ">quit" debug command as if an interrupt had occurred before
|
|
|
916 |
* the ":endif". That is, throw an interrupt exception if appropriate.
|
|
|
917 |
* Doing this here prevents an exception for a parsing error being
|
|
|
918 |
* discarded by throwing the interrupt exception later on.
|
|
|
919 |
*/
|
|
|
920 |
if (!(eap->cstack->cs_flags[eap->cstack->cs_idx] & CSF_TRUE)
|
|
|
921 |
&& dbg_check_skipped(eap))
|
|
|
922 |
(void)do_intthrow(eap->cstack);
|
|
|
923 |
|
|
|
924 |
--eap->cstack->cs_idx;
|
|
|
925 |
}
|
|
|
926 |
}
|
|
|
927 |
|
|
|
928 |
/*
|
|
|
929 |
* ":else" and ":elseif".
|
|
|
930 |
*/
|
|
|
931 |
void
|
|
|
932 |
ex_else(eap)
|
|
|
933 |
exarg_T *eap;
|
|
|
934 |
{
|
|
|
935 |
int error;
|
|
|
936 |
int skip;
|
|
|
937 |
int result;
|
|
|
938 |
struct condstack *cstack = eap->cstack;
|
|
|
939 |
|
|
|
940 |
/*
|
|
|
941 |
* Don't do something after an error, interrupt, or throw, or when there is
|
|
|
942 |
* a surrounding conditional and it was not active.
|
|
|
943 |
*/
|
|
|
944 |
skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0
|
|
|
945 |
&& !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE));
|
|
|
946 |
|
|
|
947 |
if (cstack->cs_idx < 0
|
|
|
948 |
|| (cstack->cs_flags[cstack->cs_idx]
|
|
|
949 |
& (CSF_WHILE | CSF_FOR | CSF_TRY)))
|
|
|
950 |
{
|
|
|
951 |
if (eap->cmdidx == CMD_else)
|
|
|
952 |
{
|
|
|
953 |
eap->errmsg = (char_u *)N_("E581: :else without :if");
|
|
|
954 |
return;
|
|
|
955 |
}
|
|
|
956 |
eap->errmsg = (char_u *)N_("E582: :elseif without :if");
|
|
|
957 |
skip = TRUE;
|
|
|
958 |
}
|
|
|
959 |
else if (cstack->cs_flags[cstack->cs_idx] & CSF_ELSE)
|
|
|
960 |
{
|
|
|
961 |
if (eap->cmdidx == CMD_else)
|
|
|
962 |
{
|
|
|
963 |
eap->errmsg = (char_u *)N_("E583: multiple :else");
|
|
|
964 |
return;
|
|
|
965 |
}
|
|
|
966 |
eap->errmsg = (char_u *)N_("E584: :elseif after :else");
|
|
|
967 |
skip = TRUE;
|
|
|
968 |
}
|
|
|
969 |
|
|
|
970 |
/* if skipping or the ":if" was TRUE, reset ACTIVE, otherwise set it */
|
|
|
971 |
if (skip || cstack->cs_flags[cstack->cs_idx] & CSF_TRUE)
|
|
|
972 |
{
|
|
|
973 |
if (eap->errmsg == NULL)
|
|
|
974 |
cstack->cs_flags[cstack->cs_idx] = CSF_TRUE;
|
|
|
975 |
skip = TRUE; /* don't evaluate an ":elseif" */
|
|
|
976 |
}
|
|
|
977 |
else
|
|
|
978 |
cstack->cs_flags[cstack->cs_idx] = CSF_ACTIVE;
|
|
|
979 |
|
|
|
980 |
/*
|
|
|
981 |
* When debugging or a breakpoint was encountered, display the debug prompt
|
|
|
982 |
* (if not already done). This shows the user that an ":else" or ":elseif"
|
|
|
983 |
* is executed when the ":if" or previous ":elseif" was not TRUE. Handle
|
|
|
984 |
* a ">quit" debug command as if an interrupt had occurred before the
|
|
|
985 |
* ":else" or ":elseif". That is, set "skip" and throw an interrupt
|
|
|
986 |
* exception if appropriate. Doing this here prevents that an exception
|
|
|
987 |
* for a parsing errors is discarded when throwing the interrupt exception
|
|
|
988 |
* later on.
|
|
|
989 |
*/
|
|
|
990 |
if (!skip && dbg_check_skipped(eap) && got_int)
|
|
|
991 |
{
|
|
|
992 |
(void)do_intthrow(cstack);
|
|
|
993 |
skip = TRUE;
|
|
|
994 |
}
|
|
|
995 |
|
|
|
996 |
if (eap->cmdidx == CMD_elseif)
|
|
|
997 |
{
|
|
|
998 |
result = eval_to_bool(eap->arg, &error, &eap->nextcmd, skip);
|
|
|
999 |
/* When throwing error exceptions, we want to throw always the first
|
|
|
1000 |
* of several errors in a row. This is what actually happens when
|
|
|
1001 |
* a conditional error was detected above and there is another failure
|
|
|
1002 |
* when parsing the expression. Since the skip flag is set in this
|
|
|
1003 |
* case, the parsing error will be ignored by emsg(). */
|
|
|
1004 |
|
|
|
1005 |
if (!skip && !error)
|
|
|
1006 |
{
|
|
|
1007 |
if (result)
|
|
|
1008 |
cstack->cs_flags[cstack->cs_idx] = CSF_ACTIVE | CSF_TRUE;
|
|
|
1009 |
else
|
|
|
1010 |
cstack->cs_flags[cstack->cs_idx] = 0;
|
|
|
1011 |
}
|
|
|
1012 |
else if (eap->errmsg == NULL)
|
|
|
1013 |
/* set TRUE, so this conditional will never get active */
|
|
|
1014 |
cstack->cs_flags[cstack->cs_idx] = CSF_TRUE;
|
|
|
1015 |
}
|
|
|
1016 |
else
|
|
|
1017 |
cstack->cs_flags[cstack->cs_idx] |= CSF_ELSE;
|
|
|
1018 |
}
|
|
|
1019 |
|
|
|
1020 |
/*
|
|
|
1021 |
* Handle ":while" and ":for".
|
|
|
1022 |
*/
|
|
|
1023 |
void
|
|
|
1024 |
ex_while(eap)
|
|
|
1025 |
exarg_T *eap;
|
|
|
1026 |
{
|
|
|
1027 |
int error;
|
|
|
1028 |
int skip;
|
|
|
1029 |
int result;
|
|
|
1030 |
struct condstack *cstack = eap->cstack;
|
|
|
1031 |
|
|
|
1032 |
if (cstack->cs_idx == CSTACK_LEN - 1)
|
|
|
1033 |
eap->errmsg = (char_u *)N_("E585: :while/:for nesting too deep");
|
|
|
1034 |
else
|
|
|
1035 |
{
|
|
|
1036 |
/*
|
|
|
1037 |
* The loop flag is set when we have jumped back from the matching
|
|
|
1038 |
* ":endwhile" or ":endfor". When not set, need to initialise this
|
|
|
1039 |
* cstack entry.
|
|
|
1040 |
*/
|
|
|
1041 |
if ((cstack->cs_lflags & CSL_HAD_LOOP) == 0)
|
|
|
1042 |
{
|
|
|
1043 |
++cstack->cs_idx;
|
|
|
1044 |
++cstack->cs_looplevel;
|
|
|
1045 |
cstack->cs_line[cstack->cs_idx] = -1;
|
|
|
1046 |
}
|
|
|
1047 |
cstack->cs_flags[cstack->cs_idx] =
|
|
|
1048 |
eap->cmdidx == CMD_while ? CSF_WHILE : CSF_FOR;
|
|
|
1049 |
|
|
|
1050 |
/*
|
|
|
1051 |
* Don't do something after an error, interrupt, or throw, or when
|
|
|
1052 |
* there is a surrounding conditional and it was not active.
|
|
|
1053 |
*/
|
|
|
1054 |
skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0
|
|
|
1055 |
&& !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE));
|
|
|
1056 |
if (eap->cmdidx == CMD_while)
|
|
|
1057 |
{
|
|
|
1058 |
/*
|
|
|
1059 |
* ":while bool-expr"
|
|
|
1060 |
*/
|
|
|
1061 |
result = eval_to_bool(eap->arg, &error, &eap->nextcmd, skip);
|
|
|
1062 |
}
|
|
|
1063 |
else
|
|
|
1064 |
{
|
|
|
1065 |
void *fi;
|
|
|
1066 |
|
|
|
1067 |
/*
|
|
|
1068 |
* ":for var in list-expr"
|
|
|
1069 |
*/
|
|
|
1070 |
if ((cstack->cs_lflags & CSL_HAD_LOOP) != 0)
|
|
|
1071 |
{
|
|
|
1072 |
/* Jumping here from a ":continue" or ":endfor": use the
|
|
|
1073 |
* previously evaluated list. */
|
|
|
1074 |
fi = cstack->cs_forinfo[cstack->cs_idx];
|
|
|
1075 |
error = FALSE;
|
|
|
1076 |
}
|
|
|
1077 |
else
|
|
|
1078 |
{
|
|
|
1079 |
/* Evaluate the argument and get the info in a structure. */
|
|
|
1080 |
fi = eval_for_line(eap->arg, &error, &eap->nextcmd, skip);
|
|
|
1081 |
cstack->cs_forinfo[cstack->cs_idx] = fi;
|
|
|
1082 |
}
|
|
|
1083 |
|
|
|
1084 |
/* use the element at the start of the list and advance */
|
|
|
1085 |
if (!error && fi != NULL && !skip)
|
|
|
1086 |
result = next_for_item(fi, eap->arg);
|
|
|
1087 |
else
|
|
|
1088 |
result = FALSE;
|
|
|
1089 |
|
|
|
1090 |
if (!result)
|
|
|
1091 |
{
|
|
|
1092 |
free_for_info(fi);
|
|
|
1093 |
cstack->cs_forinfo[cstack->cs_idx] = NULL;
|
|
|
1094 |
}
|
|
|
1095 |
}
|
|
|
1096 |
|
|
|
1097 |
/*
|
|
|
1098 |
* If this cstack entry was just initialised and is active, set the
|
|
|
1099 |
* loop flag, so do_cmdline() will set the line number in cs_line[].
|
|
|
1100 |
* If executing the command a second time, clear the loop flag.
|
|
|
1101 |
*/
|
|
|
1102 |
if (!skip && !error && result)
|
|
|
1103 |
{
|
|
|
1104 |
cstack->cs_flags[cstack->cs_idx] |= (CSF_ACTIVE | CSF_TRUE);
|
|
|
1105 |
cstack->cs_lflags ^= CSL_HAD_LOOP;
|
|
|
1106 |
}
|
|
|
1107 |
else
|
|
|
1108 |
{
|
|
|
1109 |
cstack->cs_lflags &= ~CSL_HAD_LOOP;
|
|
|
1110 |
/* If the ":while" evaluates to FALSE or ":for" is past the end of
|
|
|
1111 |
* the list, show the debug prompt at the ":endwhile"/":endfor" as
|
|
|
1112 |
* if there was a ":break" in a ":while"/":for" evaluating to
|
|
|
1113 |
* TRUE. */
|
|
|
1114 |
if (!skip && !error)
|
|
|
1115 |
cstack->cs_flags[cstack->cs_idx] |= CSF_TRUE;
|
|
|
1116 |
}
|
|
|
1117 |
}
|
|
|
1118 |
}
|
|
|
1119 |
|
|
|
1120 |
/*
|
|
|
1121 |
* ":continue"
|
|
|
1122 |
*/
|
|
|
1123 |
void
|
|
|
1124 |
ex_continue(eap)
|
|
|
1125 |
exarg_T *eap;
|
|
|
1126 |
{
|
|
|
1127 |
int idx;
|
|
|
1128 |
struct condstack *cstack = eap->cstack;
|
|
|
1129 |
|
|
|
1130 |
if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0)
|
|
|
1131 |
eap->errmsg = (char_u *)N_("E586: :continue without :while or :for");
|
|
|
1132 |
else
|
|
|
1133 |
{
|
|
|
1134 |
/* Try to find the matching ":while". This might stop at a try
|
|
|
1135 |
* conditional not in its finally clause (which is then to be executed
|
|
|
1136 |
* next). Therefor, inactivate all conditionals except the ":while"
|
|
|
1137 |
* itself (if reached). */
|
|
|
1138 |
idx = cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, FALSE);
|
|
|
1139 |
if (idx >= 0 && (cstack->cs_flags[idx] & (CSF_WHILE | CSF_FOR)))
|
|
|
1140 |
{
|
|
|
1141 |
rewind_conditionals(cstack, idx, CSF_TRY, &cstack->cs_trylevel);
|
|
|
1142 |
|
|
|
1143 |
/*
|
|
|
1144 |
* Set CSL_HAD_CONT, so do_cmdline() will jump back to the
|
|
|
1145 |
* matching ":while".
|
|
|
1146 |
*/
|
|
|
1147 |
cstack->cs_lflags |= CSL_HAD_CONT; /* let do_cmdline() handle it */
|
|
|
1148 |
}
|
|
|
1149 |
else
|
|
|
1150 |
{
|
|
|
1151 |
/* If a try conditional not in its finally clause is reached first,
|
|
|
1152 |
* make the ":continue" pending for execution at the ":endtry". */
|
|
|
1153 |
cstack->cs_pending[idx] = CSTP_CONTINUE;
|
|
|
1154 |
report_make_pending(CSTP_CONTINUE, NULL);
|
|
|
1155 |
}
|
|
|
1156 |
}
|
|
|
1157 |
}
|
|
|
1158 |
|
|
|
1159 |
/*
|
|
|
1160 |
* ":break"
|
|
|
1161 |
*/
|
|
|
1162 |
void
|
|
|
1163 |
ex_break(eap)
|
|
|
1164 |
exarg_T *eap;
|
|
|
1165 |
{
|
|
|
1166 |
int idx;
|
|
|
1167 |
struct condstack *cstack = eap->cstack;
|
|
|
1168 |
|
|
|
1169 |
if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0)
|
|
|
1170 |
eap->errmsg = (char_u *)N_("E587: :break without :while or :for");
|
|
|
1171 |
else
|
|
|
1172 |
{
|
|
|
1173 |
/* Inactivate conditionals until the matching ":while" or a try
|
|
|
1174 |
* conditional not in its finally clause (which is then to be
|
|
|
1175 |
* executed next) is found. In the latter case, make the ":break"
|
|
|
1176 |
* pending for execution at the ":endtry". */
|
|
|
1177 |
idx = cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, TRUE);
|
|
|
1178 |
if (idx >= 0 && !(cstack->cs_flags[idx] & (CSF_WHILE | CSF_FOR)))
|
|
|
1179 |
{
|
|
|
1180 |
cstack->cs_pending[idx] = CSTP_BREAK;
|
|
|
1181 |
report_make_pending(CSTP_BREAK, NULL);
|
|
|
1182 |
}
|
|
|
1183 |
}
|
|
|
1184 |
}
|
|
|
1185 |
|
|
|
1186 |
/*
|
|
|
1187 |
* ":endwhile" and ":endfor"
|
|
|
1188 |
*/
|
|
|
1189 |
void
|
|
|
1190 |
ex_endwhile(eap)
|
|
|
1191 |
exarg_T *eap;
|
|
|
1192 |
{
|
|
|
1193 |
struct condstack *cstack = eap->cstack;
|
|
|
1194 |
int idx;
|
|
|
1195 |
char_u *err;
|
|
|
1196 |
int csf;
|
|
|
1197 |
int fl;
|
|
|
1198 |
|
|
|
1199 |
if (eap->cmdidx == CMD_endwhile)
|
|
|
1200 |
{
|
|
|
1201 |
err = e_while;
|
|
|
1202 |
csf = CSF_WHILE;
|
|
|
1203 |
}
|
|
|
1204 |
else
|
|
|
1205 |
{
|
|
|
1206 |
err = e_for;
|
|
|
1207 |
csf = CSF_FOR;
|
|
|
1208 |
}
|
|
|
1209 |
|
|
|
1210 |
if (cstack->cs_looplevel <= 0 || cstack->cs_idx < 0)
|
|
|
1211 |
eap->errmsg = err;
|
|
|
1212 |
else
|
|
|
1213 |
{
|
|
|
1214 |
fl = cstack->cs_flags[cstack->cs_idx];
|
|
|
1215 |
if (!(fl & csf))
|
|
|
1216 |
{
|
|
|
1217 |
/* If we are in a ":while" or ":for" but used the wrong endloop
|
|
|
1218 |
* command, do not rewind to the next enclosing ":for"/":while". */
|
|
|
1219 |
if (fl & CSF_WHILE)
|
|
|
1220 |
eap->errmsg = (char_u *)_("E732: Using :endfor with :while");
|
|
|
1221 |
else if (fl & CSF_FOR)
|
|
|
1222 |
eap->errmsg = (char_u *)_("E733: Using :endwhile with :for");
|
|
|
1223 |
}
|
|
|
1224 |
if (!(fl & (CSF_WHILE | CSF_FOR)))
|
|
|
1225 |
{
|
|
|
1226 |
if (!(fl & CSF_TRY))
|
|
|
1227 |
eap->errmsg = e_endif;
|
|
|
1228 |
else if (fl & CSF_FINALLY)
|
|
|
1229 |
eap->errmsg = e_endtry;
|
|
|
1230 |
/* Try to find the matching ":while" and report what's missing. */
|
|
|
1231 |
for (idx = cstack->cs_idx; idx > 0; --idx)
|
|
|
1232 |
{
|
|
|
1233 |
fl = cstack->cs_flags[idx];
|
|
|
1234 |
if ((fl & CSF_TRY) && !(fl & CSF_FINALLY))
|
|
|
1235 |
{
|
|
|
1236 |
/* Give up at a try conditional not in its finally clause.
|
|
|
1237 |
* Ignore the ":endwhile"/":endfor". */
|
|
|
1238 |
eap->errmsg = err;
|
|
|
1239 |
return;
|
|
|
1240 |
}
|
|
|
1241 |
if (fl & csf)
|
|
|
1242 |
break;
|
|
|
1243 |
}
|
|
|
1244 |
/* Cleanup and rewind all contained (and unclosed) conditionals. */
|
|
|
1245 |
(void)cleanup_conditionals(cstack, CSF_WHILE | CSF_FOR, FALSE);
|
|
|
1246 |
rewind_conditionals(cstack, idx, CSF_TRY, &cstack->cs_trylevel);
|
|
|
1247 |
}
|
|
|
1248 |
|
|
|
1249 |
/*
|
|
|
1250 |
* When debugging or a breakpoint was encountered, display the debug
|
|
|
1251 |
* prompt (if not already done). This shows the user that an
|
|
|
1252 |
* ":endwhile"/":endfor" is executed when the ":while" was not TRUE or
|
|
|
1253 |
* after a ":break". Handle a ">quit" debug command as if an
|
|
|
1254 |
* interrupt had occurred before the ":endwhile"/":endfor". That is,
|
|
|
1255 |
* throw an interrupt exception if appropriate. Doing this here
|
|
|
1256 |
* prevents that an exception for a parsing error is discarded when
|
|
|
1257 |
* throwing the interrupt exception later on.
|
|
|
1258 |
*/
|
|
|
1259 |
else if (cstack->cs_flags[cstack->cs_idx] & CSF_TRUE
|
|
|
1260 |
&& !(cstack->cs_flags[cstack->cs_idx] & CSF_ACTIVE)
|
|
|
1261 |
&& dbg_check_skipped(eap))
|
|
|
1262 |
(void)do_intthrow(cstack);
|
|
|
1263 |
|
|
|
1264 |
/*
|
|
|
1265 |
* Set loop flag, so do_cmdline() will jump back to the matching
|
|
|
1266 |
* ":while" or ":for".
|
|
|
1267 |
*/
|
|
|
1268 |
cstack->cs_lflags |= CSL_HAD_ENDLOOP;
|
|
|
1269 |
}
|
|
|
1270 |
}
|
|
|
1271 |
|
|
|
1272 |
|
|
|
1273 |
/*
|
|
|
1274 |
* ":throw expr"
|
|
|
1275 |
*/
|
|
|
1276 |
void
|
|
|
1277 |
ex_throw(eap)
|
|
|
1278 |
exarg_T *eap;
|
|
|
1279 |
{
|
|
|
1280 |
char_u *arg = eap->arg;
|
|
|
1281 |
char_u *value;
|
|
|
1282 |
|
|
|
1283 |
if (*arg != NUL && *arg != '|' && *arg != '\n')
|
|
|
1284 |
value = eval_to_string_skip(arg, &eap->nextcmd, eap->skip);
|
|
|
1285 |
else
|
|
|
1286 |
{
|
|
|
1287 |
EMSG(_(e_argreq));
|
|
|
1288 |
value = NULL;
|
|
|
1289 |
}
|
|
|
1290 |
|
|
|
1291 |
/* On error or when an exception is thrown during argument evaluation, do
|
|
|
1292 |
* not throw. */
|
|
|
1293 |
if (!eap->skip && value != NULL)
|
|
|
1294 |
{
|
|
|
1295 |
if (throw_exception(value, ET_USER, NULL) == FAIL)
|
|
|
1296 |
vim_free(value);
|
|
|
1297 |
else
|
|
|
1298 |
do_throw(eap->cstack);
|
|
|
1299 |
}
|
|
|
1300 |
}
|
|
|
1301 |
|
|
|
1302 |
/*
|
|
|
1303 |
* Throw the current exception through the specified cstack. Common routine
|
|
|
1304 |
* for ":throw" (user exception) and error and interrupt exceptions. Also
|
|
|
1305 |
* used for rethrowing an uncaught exception.
|
|
|
1306 |
*/
|
|
|
1307 |
void
|
|
|
1308 |
do_throw(cstack)
|
|
|
1309 |
struct condstack *cstack;
|
|
|
1310 |
{
|
|
|
1311 |
int idx;
|
|
|
1312 |
int inactivate_try = FALSE;
|
|
|
1313 |
|
|
|
1314 |
/*
|
|
|
1315 |
* Cleanup and inactivate up to the next surrounding try conditional that
|
|
|
1316 |
* is not in its finally clause. Normally, do not inactivate the try
|
|
|
1317 |
* conditional itself, so that its ACTIVE flag can be tested below. But
|
|
|
1318 |
* if a previous error or interrupt has not been converted to an exception,
|
|
|
1319 |
* inactivate the try conditional, too, as if the conversion had been done,
|
|
|
1320 |
* and reset the did_emsg or got_int flag, so this won't happen again at
|
|
|
1321 |
* the next surrounding try conditional.
|
|
|
1322 |
*/
|
|
|
1323 |
if (did_emsg && !THROW_ON_ERROR)
|
|
|
1324 |
{
|
|
|
1325 |
inactivate_try = TRUE;
|
|
|
1326 |
did_emsg = FALSE;
|
|
|
1327 |
}
|
|
|
1328 |
if (got_int && !THROW_ON_INTERRUPT)
|
|
|
1329 |
{
|
|
|
1330 |
inactivate_try = TRUE;
|
|
|
1331 |
got_int = FALSE;
|
|
|
1332 |
}
|
|
|
1333 |
idx = cleanup_conditionals(cstack, 0, inactivate_try);
|
|
|
1334 |
if (idx >= 0)
|
|
|
1335 |
{
|
|
|
1336 |
/*
|
|
|
1337 |
* If this try conditional is active and we are before its first
|
|
|
1338 |
* ":catch", set THROWN so that the ":catch" commands will check
|
|
|
1339 |
* whether the exception matches. When the exception came from any of
|
|
|
1340 |
* the catch clauses, it will be made pending at the ":finally" (if
|
|
|
1341 |
* present) and rethrown at the ":endtry". This will also happen if
|
|
|
1342 |
* the try conditional is inactive. This is the case when we are
|
|
|
1343 |
* throwing an exception due to an error or interrupt on the way from
|
|
|
1344 |
* a preceding ":continue", ":break", ":return", ":finish", error or
|
|
|
1345 |
* interrupt (not converted to an exception) to the finally clause or
|
|
|
1346 |
* from a preceding throw of a user or error or interrupt exception to
|
|
|
1347 |
* the matching catch clause or the finally clause.
|
|
|
1348 |
*/
|
|
|
1349 |
if (!(cstack->cs_flags[idx] & CSF_CAUGHT))
|
|
|
1350 |
{
|
|
|
1351 |
if (cstack->cs_flags[idx] & CSF_ACTIVE)
|
|
|
1352 |
cstack->cs_flags[idx] |= CSF_THROWN;
|
|
|
1353 |
else
|
|
|
1354 |
/* THROWN may have already been set for a catchable exception
|
|
|
1355 |
* that has been discarded. Ensure it is reset for the new
|
|
|
1356 |
* exception. */
|
|
|
1357 |
cstack->cs_flags[idx] &= ~CSF_THROWN;
|
|
|
1358 |
}
|
|
|
1359 |
cstack->cs_flags[idx] &= ~CSF_ACTIVE;
|
|
|
1360 |
cstack->cs_exception[idx] = current_exception;
|
|
|
1361 |
}
|
|
|
1362 |
#if 0
|
|
|
1363 |
/* TODO: Add optimization below. Not yet done because of interface
|
|
|
1364 |
* problems to eval.c and ex_cmds2.c. (Servatius) */
|
|
|
1365 |
else
|
|
|
1366 |
{
|
|
|
1367 |
/*
|
|
|
1368 |
* There are no catch clauses to check or finally clauses to execute.
|
|
|
1369 |
* End the current script or function. The exception will be rethrown
|
|
|
1370 |
* in the caller.
|
|
|
1371 |
*/
|
|
|
1372 |
if (getline_equal(eap->getline, eap->cookie, get_func_line))
|
|
|
1373 |
current_funccal->returned = TRUE;
|
|
|
1374 |
elseif (eap->get_func_line == getsourceline)
|
|
|
1375 |
((struct source_cookie *)eap->cookie)->finished = TRUE;
|
|
|
1376 |
}
|
|
|
1377 |
#endif
|
|
|
1378 |
|
|
|
1379 |
did_throw = TRUE;
|
|
|
1380 |
}
|
|
|
1381 |
|
|
|
1382 |
/*
|
|
|
1383 |
* ":try"
|
|
|
1384 |
*/
|
|
|
1385 |
void
|
|
|
1386 |
ex_try(eap)
|
|
|
1387 |
exarg_T *eap;
|
|
|
1388 |
{
|
|
|
1389 |
int skip;
|
|
|
1390 |
struct condstack *cstack = eap->cstack;
|
|
|
1391 |
|
|
|
1392 |
if (cstack->cs_idx == CSTACK_LEN - 1)
|
|
|
1393 |
eap->errmsg = (char_u *)N_("E601: :try nesting too deep");
|
|
|
1394 |
else
|
|
|
1395 |
{
|
|
|
1396 |
++cstack->cs_idx;
|
|
|
1397 |
++cstack->cs_trylevel;
|
|
|
1398 |
cstack->cs_flags[cstack->cs_idx] = CSF_TRY;
|
|
|
1399 |
cstack->cs_pending[cstack->cs_idx] = CSTP_NONE;
|
|
|
1400 |
|
|
|
1401 |
/*
|
|
|
1402 |
* Don't do something after an error, interrupt, or throw, or when there
|
|
|
1403 |
* is a surrounding conditional and it was not active.
|
|
|
1404 |
*/
|
|
|
1405 |
skip = did_emsg || got_int || did_throw || (cstack->cs_idx > 0
|
|
|
1406 |
&& !(cstack->cs_flags[cstack->cs_idx - 1] & CSF_ACTIVE));
|
|
|
1407 |
|
|
|
1408 |
if (!skip)
|
|
|
1409 |
{
|
|
|
1410 |
/* Set ACTIVE and TRUE. TRUE means that the corresponding ":catch"
|
|
|
1411 |
* commands should check for a match if an exception is thrown and
|
|
|
1412 |
* that the finally clause needs to be executed. */
|
|
|
1413 |
cstack->cs_flags[cstack->cs_idx] |= CSF_ACTIVE | CSF_TRUE;
|
|
|
1414 |
|
|
|
1415 |
/*
|
|
|
1416 |
* ":silent!", even when used in a try conditional, disables
|
|
|
1417 |
* displaying of error messages and conversion of errors to
|
|
|
1418 |
* exceptions. When the silent commands again open a try
|
|
|
1419 |
* conditional, save "emsg_silent" and reset it so that errors are
|
|
|
1420 |
* again converted to exceptions. The value is restored when that
|
|
|
1421 |
* try conditional is left. If it is left normally, the commands
|
|
|
1422 |
* following the ":endtry" are again silent. If it is left by
|
|
|
1423 |
* a ":continue", ":break", ":return", or ":finish", the commands
|
|
|
1424 |
* executed next are again silent. If it is left due to an
|
|
|
1425 |
* aborting error, an interrupt, or an exception, restoring
|
|
|
1426 |
* "emsg_silent" does not matter since we are already in the
|
|
|
1427 |
* aborting state and/or the exception has already been thrown.
|
|
|
1428 |
* The effect is then just freeing the memory that was allocated
|
|
|
1429 |
* to save the value.
|
|
|
1430 |
*/
|
|
|
1431 |
if (emsg_silent)
|
|
|
1432 |
{
|
|
|
1433 |
eslist_T *elem;
|
|
|
1434 |
|
|
|
1435 |
elem = (eslist_T *)alloc((unsigned)sizeof(struct eslist_elem));
|
|
|
1436 |
if (elem == NULL)
|
|
|
1437 |
EMSG(_(e_outofmem));
|
|
|
1438 |
else
|
|
|
1439 |
{
|
|
|
1440 |
elem->saved_emsg_silent = emsg_silent;
|
|
|
1441 |
elem->next = cstack->cs_emsg_silent_list;
|
|
|
1442 |
cstack->cs_emsg_silent_list = elem;
|
|
|
1443 |
cstack->cs_flags[cstack->cs_idx] |= CSF_SILENT;
|
|
|
1444 |
emsg_silent = 0;
|
|
|
1445 |
}
|
|
|
1446 |
}
|
|
|
1447 |
}
|
|
|
1448 |
|
|
|
1449 |
}
|
|
|
1450 |
}
|
|
|
1451 |
|
|
|
1452 |
/*
|
|
|
1453 |
* ":catch /{pattern}/" and ":catch"
|
|
|
1454 |
*/
|
|
|
1455 |
void
|
|
|
1456 |
ex_catch(eap)
|
|
|
1457 |
exarg_T *eap;
|
|
|
1458 |
{
|
|
|
1459 |
int idx = 0;
|
|
|
1460 |
int give_up = FALSE;
|
|
|
1461 |
int skip = FALSE;
|
|
|
1462 |
int caught = FALSE;
|
|
|
1463 |
char_u *end;
|
|
|
1464 |
int save_char = 0;
|
|
|
1465 |
char_u *save_cpo;
|
|
|
1466 |
regmatch_T regmatch;
|
|
|
1467 |
int prev_got_int;
|
|
|
1468 |
struct condstack *cstack = eap->cstack;
|
|
|
1469 |
char_u *pat;
|
|
|
1470 |
|
|
|
1471 |
if (cstack->cs_trylevel <= 0 || cstack->cs_idx < 0)
|
|
|
1472 |
{
|
|
|
1473 |
eap->errmsg = (char_u *)N_("E603: :catch without :try");
|
|
|
1474 |
give_up = TRUE;
|
|
|
1475 |
}
|
|
|
1476 |
else
|
|
|
1477 |
{
|
|
|
1478 |
if (!(cstack->cs_flags[cstack->cs_idx] & CSF_TRY))
|
|
|
1479 |
{
|
|
|
1480 |
/* Report what's missing if the matching ":try" is not in its
|
|
|
1481 |
* finally clause. */
|
|
|
1482 |
eap->errmsg = get_end_emsg(cstack);
|
|
|
1483 |
skip = TRUE;
|
|
|
1484 |
}
|
|
|
1485 |
for (idx = cstack->cs_idx; idx > 0; --idx)
|
|
|
1486 |
if (cstack->cs_flags[idx] & CSF_TRY)
|
|
|
1487 |
break;
|
|
|
1488 |
if (cstack->cs_flags[idx] & CSF_FINALLY)
|
|
|
1489 |
{
|
|
|
1490 |
/* Give up for a ":catch" after ":finally" and ignore it.
|
|
|
1491 |
* Just parse. */
|
|
|
1492 |
eap->errmsg = (char_u *)N_("E604: :catch after :finally");
|
|
|
1493 |
give_up = TRUE;
|
|
|
1494 |
}
|
|
|
1495 |
else
|
|
|
1496 |
rewind_conditionals(cstack, idx, CSF_WHILE | CSF_FOR,
|
|
|
1497 |
&cstack->cs_looplevel);
|
|
|
1498 |
}
|
|
|
1499 |
|
|
|
1500 |
if (ends_excmd(*eap->arg)) /* no argument, catch all errors */
|
|
|
1501 |
{
|
|
|
1502 |
pat = (char_u *)".*";
|
|
|
1503 |
end = NULL;
|
|
|
1504 |
eap->nextcmd = find_nextcmd(eap->arg);
|
|
|
1505 |
}
|
|
|
1506 |
else
|
|
|
1507 |
{
|
|
|
1508 |
pat = eap->arg + 1;
|
|
|
1509 |
end = skip_regexp(pat, *eap->arg, TRUE, NULL);
|
|
|
1510 |
}
|
|
|
1511 |
|
|
|
1512 |
if (!give_up)
|
|
|
1513 |
{
|
|
|
1514 |
/*
|
|
|
1515 |
* Don't do something when no exception has been thrown or when the
|
|
|
1516 |
* corresponding try block never got active (because of an inactive
|
|
|
1517 |
* surrounding conditional or after an error or interrupt or throw).
|
|
|
1518 |
*/
|
|
|
1519 |
if (!did_throw || !(cstack->cs_flags[idx] & CSF_TRUE))
|
|
|
1520 |
skip = TRUE;
|
|
|
1521 |
|
|
|
1522 |
/*
|
|
|
1523 |
* Check for a match only if an exception is thrown but not caught by
|
|
|
1524 |
* a previous ":catch". An exception that has replaced a discarded
|
|
|
1525 |
* exception is not checked (THROWN is not set then).
|
|
|
1526 |
*/
|
|
|
1527 |
if (!skip && (cstack->cs_flags[idx] & CSF_THROWN)
|
|
|
1528 |
&& !(cstack->cs_flags[idx] & CSF_CAUGHT))
|
|
|
1529 |
{
|
|
|
1530 |
if (end != NULL && *end != NUL && !ends_excmd(*skipwhite(end + 1)))
|
|
|
1531 |
{
|
|
|
1532 |
EMSG(_(e_trailing));
|
|
|
1533 |
return;
|
|
|
1534 |
}
|
|
|
1535 |
|
|
|
1536 |
/* When debugging or a breakpoint was encountered, display the
|
|
|
1537 |
* debug prompt (if not already done) before checking for a match.
|
|
|
1538 |
* This is a helpful hint for the user when the regular expression
|
|
|
1539 |
* matching fails. Handle a ">quit" debug command as if an
|
|
|
1540 |
* interrupt had occurred before the ":catch". That is, discard
|
|
|
1541 |
* the original exception, replace it by an interrupt exception,
|
|
|
1542 |
* and don't catch it in this try block. */
|
|
|
1543 |
if (!dbg_check_skipped(eap) || !do_intthrow(cstack))
|
|
|
1544 |
{
|
|
|
1545 |
/* Terminate the pattern and avoid the 'l' flag in 'cpoptions'
|
|
|
1546 |
* while compiling it. */
|
|
|
1547 |
if (end != NULL)
|
|
|
1548 |
{
|
|
|
1549 |
save_char = *end;
|
|
|
1550 |
*end = NUL;
|
|
|
1551 |
}
|
|
|
1552 |
save_cpo = p_cpo;
|
|
|
1553 |
p_cpo = (char_u *)"";
|
|
|
1554 |
regmatch.regprog = vim_regcomp(pat, TRUE);
|
|
|
1555 |
regmatch.rm_ic = FALSE;
|
|
|
1556 |
if (end != NULL)
|
|
|
1557 |
*end = save_char;
|
|
|
1558 |
p_cpo = save_cpo;
|
|
|
1559 |
if (regmatch.regprog == NULL)
|
|
|
1560 |
EMSG2(_(e_invarg2), pat);
|
|
|
1561 |
else
|
|
|
1562 |
{
|
|
|
1563 |
/*
|
|
|
1564 |
* Save the value of got_int and reset it. We don't want
|
|
|
1565 |
* a previous interruption cancel matching, only hitting
|
|
|
1566 |
* CTRL-C while matching should abort it.
|
|
|
1567 |
*/
|
|
|
1568 |
prev_got_int = got_int;
|
|
|
1569 |
got_int = FALSE;
|
|
|
1570 |
caught = vim_regexec_nl(®match, current_exception->value,
|
|
|
1571 |
(colnr_T)0);
|
|
|
1572 |
got_int |= prev_got_int;
|
|
|
1573 |
vim_free(regmatch.regprog);
|
|
|
1574 |
}
|
|
|
1575 |
}
|
|
|
1576 |
}
|
|
|
1577 |
|
|
|
1578 |
if (caught)
|
|
|
1579 |
{
|
|
|
1580 |
/* Make this ":catch" clause active and reset did_emsg, got_int,
|
|
|
1581 |
* and did_throw. Put the exception on the caught stack. */
|
|
|
1582 |
cstack->cs_flags[idx] |= CSF_ACTIVE | CSF_CAUGHT;
|
|
|
1583 |
did_emsg = got_int = did_throw = FALSE;
|
|
|
1584 |
catch_exception((except_T *)cstack->cs_exception[idx]);
|
|
|
1585 |
/* It's mandatory that the current exception is stored in the cstack
|
|
|
1586 |
* so that it can be discarded at the next ":catch", ":finally", or
|
|
|
1587 |
* ":endtry" or when the catch clause is left by a ":continue",
|
|
|
1588 |
* ":break", ":return", ":finish", error, interrupt, or another
|
|
|
1589 |
* exception. */
|
|
|
1590 |
if (cstack->cs_exception[cstack->cs_idx] != current_exception)
|
|
|
1591 |
EMSG(_(e_internal));
|
|
|
1592 |
}
|
|
|
1593 |
else
|
|
|
1594 |
{
|
|
|
1595 |
/*
|
|
|
1596 |
* If there is a preceding catch clause and it caught the exception,
|
|
|
1597 |
* finish the exception now. This happens also after errors except
|
|
|
1598 |
* when this ":catch" was after the ":finally" or not within
|
|
|
1599 |
* a ":try". Make the try conditional inactive so that the
|
|
|
1600 |
* following catch clauses are skipped. On an error or interrupt
|
|
|
1601 |
* after the preceding try block or catch clause was left by
|
|
|
1602 |
* a ":continue", ":break", ":return", or ":finish", discard the
|
|
|
1603 |
* pending action.
|
|
|
1604 |
*/
|
|
|
1605 |
cleanup_conditionals(cstack, CSF_TRY, TRUE);
|
|
|
1606 |
}
|
|
|
1607 |
}
|
|
|
1608 |
|
|
|
1609 |
if (end != NULL)
|
|
|
1610 |
eap->nextcmd = find_nextcmd(end);
|
|
|
1611 |
}
|
|
|
1612 |
|
|
|
1613 |
/*
|
|
|
1614 |
* ":finally"
|
|
|
1615 |
*/
|
|
|
1616 |
void
|
|
|
1617 |
ex_finally(eap)
|
|
|
1618 |
exarg_T *eap;
|
|
|
1619 |
{
|
|
|
1620 |
int idx;
|
|
|
1621 |
int skip = FALSE;
|
|
|
1622 |
int pending = CSTP_NONE;
|
|
|
1623 |
struct condstack *cstack = eap->cstack;
|
|
|
1624 |
|
|
|
1625 |
if (cstack->cs_trylevel <= 0 || cstack->cs_idx < 0)
|
|
|
1626 |
eap->errmsg = (char_u *)N_("E606: :finally without :try");
|
|
|
1627 |
else
|
|
|
1628 |
{
|
|
|
1629 |
if (!(cstack->cs_flags[cstack->cs_idx] & CSF_TRY))
|
|
|
1630 |
{
|
|
|
1631 |
eap->errmsg = get_end_emsg(cstack);
|
|
|
1632 |
for (idx = cstack->cs_idx - 1; idx > 0; --idx)
|
|
|
1633 |
if (cstack->cs_flags[idx] & CSF_TRY)
|
|
|
1634 |
break;
|
|
|
1635 |
/* Make this error pending, so that the commands in the following
|
|
|
1636 |
* finally clause can be executed. This overrules also a pending
|
|
|
1637 |
* ":continue", ":break", ":return", or ":finish". */
|
|
|
1638 |
pending = CSTP_ERROR;
|
|
|
1639 |
}
|
|
|
1640 |
else
|
|
|
1641 |
idx = cstack->cs_idx;
|
|
|
1642 |
|
|
|
1643 |
if (cstack->cs_flags[idx] & CSF_FINALLY)
|
|
|
1644 |
{
|
|
|
1645 |
/* Give up for a multiple ":finally" and ignore it. */
|
|
|
1646 |
eap->errmsg = (char_u *)N_("E607: multiple :finally");
|
|
|
1647 |
return;
|
|
|
1648 |
}
|
|
|
1649 |
rewind_conditionals(cstack, idx, CSF_WHILE | CSF_FOR,
|
|
|
1650 |
&cstack->cs_looplevel);
|
|
|
1651 |
|
|
|
1652 |
/*
|
|
|
1653 |
* Don't do something when the corresponding try block never got active
|
|
|
1654 |
* (because of an inactive surrounding conditional or after an error or
|
|
|
1655 |
* interrupt or throw) or for a ":finally" without ":try" or a multiple
|
|
|
1656 |
* ":finally". After every other error (did_emsg or the conditional
|
|
|
1657 |
* errors detected above) or after an interrupt (got_int) or an
|
|
|
1658 |
* exception (did_throw), the finally clause must be executed.
|
|
|
1659 |
*/
|
|
|
1660 |
skip = !(cstack->cs_flags[cstack->cs_idx] & CSF_TRUE);
|
|
|
1661 |
|
|
|
1662 |
if (!skip)
|
|
|
1663 |
{
|
|
|
1664 |
/* When debugging or a breakpoint was encountered, display the
|
|
|
1665 |
* debug prompt (if not already done). The user then knows that the
|
|
|
1666 |
* finally clause is executed. */
|
|
|
1667 |
if (dbg_check_skipped(eap))
|
|
|
1668 |
{
|
|
|
1669 |
/* Handle a ">quit" debug command as if an interrupt had
|
|
|
1670 |
* occurred before the ":finally". That is, discard the
|
|
|
1671 |
* original exception and replace it by an interrupt
|
|
|
1672 |
* exception. */
|
|
|
1673 |
(void)do_intthrow(cstack);
|
|
|
1674 |
}
|
|
|
1675 |
|
|
|
1676 |
/*
|
|
|
1677 |
* If there is a preceding catch clause and it caught the exception,
|
|
|
1678 |
* finish the exception now. This happens also after errors except
|
|
|
1679 |
* when this is a multiple ":finally" or one not within a ":try".
|
|
|
1680 |
* After an error or interrupt, this also discards a pending
|
|
|
1681 |
* ":continue", ":break", ":finish", or ":return" from the preceding
|
|
|
1682 |
* try block or catch clause.
|
|
|
1683 |
*/
|
|
|
1684 |
cleanup_conditionals(cstack, CSF_TRY, FALSE);
|
|
|
1685 |
|
|
|
1686 |
/*
|
|
|
1687 |
* Make did_emsg, got_int, did_throw pending. If set, they overrule
|
|
|
1688 |
* a pending ":continue", ":break", ":return", or ":finish". Then
|
|
|
1689 |
* we have particularly to discard a pending return value (as done
|
|
|
1690 |
* by the call to cleanup_conditionals() above when did_emsg or
|
|
|
1691 |
* got_int is set). The pending values are restored by the
|
|
|
1692 |
* ":endtry", except if there is a new error, interrupt, exception,
|
|
|
1693 |
* ":continue", ":break", ":return", or ":finish" in the following
|
|
|
1694 |
* finally clause. A missing ":endwhile", ":endfor" or ":endif"
|
|
|
1695 |
* detected here is treated as if did_emsg and did_throw had
|
|
|
1696 |
* already been set, respectively in case that the error is not
|
|
|
1697 |
* converted to an exception, did_throw had already been unset.
|
|
|
1698 |
* We must not set did_emsg here since that would suppress the
|
|
|
1699 |
* error message.
|
|
|
1700 |
*/
|
|
|
1701 |
if (pending == CSTP_ERROR || did_emsg || got_int || did_throw)
|
|
|
1702 |
{
|
|
|
1703 |
if (cstack->cs_pending[cstack->cs_idx] == CSTP_RETURN)
|
|
|
1704 |
{
|
|
|
1705 |
report_discard_pending(CSTP_RETURN,
|
|
|
1706 |
cstack->cs_rettv[cstack->cs_idx]);
|
|
|
1707 |
discard_pending_return(cstack->cs_rettv[cstack->cs_idx]);
|
|
|
1708 |
}
|
|
|
1709 |
if (pending == CSTP_ERROR && !did_emsg)
|
|
|
1710 |
pending |= (THROW_ON_ERROR) ? CSTP_THROW : 0;
|
|
|
1711 |
else
|
|
|
1712 |
pending |= did_throw ? CSTP_THROW : 0;
|
|
|
1713 |
pending |= did_emsg ? CSTP_ERROR : 0;
|
|
|
1714 |
pending |= got_int ? CSTP_INTERRUPT : 0;
|
|
|
1715 |
cstack->cs_pending[cstack->cs_idx] = pending;
|
|
|
1716 |
|
|
|
1717 |
/* It's mandatory that the current exception is stored in the
|
|
|
1718 |
* cstack so that it can be rethrown at the ":endtry" or be
|
|
|
1719 |
* discarded if the finally clause is left by a ":continue",
|
|
|
1720 |
* ":break", ":return", ":finish", error, interrupt, or another
|
|
|
1721 |
* exception. When emsg() is called for a missing ":endif" or
|
|
|
1722 |
* a missing ":endwhile"/":endfor" detected here, the
|
|
|
1723 |
* exception will be discarded. */
|
|
|
1724 |
if (did_throw && cstack->cs_exception[cstack->cs_idx]
|
|
|
1725 |
!= current_exception)
|
|
|
1726 |
EMSG(_(e_internal));
|
|
|
1727 |
}
|
|
|
1728 |
|
|
|
1729 |
/*
|
|
|
1730 |
* Set CSL_HAD_FINA, so do_cmdline() will reset did_emsg,
|
|
|
1731 |
* got_int, and did_throw and make the finally clause active.
|
|
|
1732 |
* This will happen after emsg() has been called for a missing
|
|
|
1733 |
* ":endif" or a missing ":endwhile"/":endfor" detected here, so
|
|
|
1734 |
* that the following finally clause will be executed even then.
|
|
|
1735 |
*/
|
|
|
1736 |
cstack->cs_lflags |= CSL_HAD_FINA;
|
|
|
1737 |
}
|
|
|
1738 |
}
|
|
|
1739 |
}
|
|
|
1740 |
|
|
|
1741 |
/*
|
|
|
1742 |
* ":endtry"
|
|
|
1743 |
*/
|
|
|
1744 |
void
|
|
|
1745 |
ex_endtry(eap)
|
|
|
1746 |
exarg_T *eap;
|
|
|
1747 |
{
|
|
|
1748 |
int idx;
|
|
|
1749 |
int skip;
|
|
|
1750 |
int rethrow = FALSE;
|
|
|
1751 |
int pending = CSTP_NONE;
|
|
|
1752 |
void *rettv = NULL;
|
|
|
1753 |
struct condstack *cstack = eap->cstack;
|
|
|
1754 |
|
|
|
1755 |
if (cstack->cs_trylevel <= 0 || cstack->cs_idx < 0)
|
|
|
1756 |
eap->errmsg = (char_u *)N_("E602: :endtry without :try");
|
|
|
1757 |
else
|
|
|
1758 |
{
|
|
|
1759 |
/*
|
|
|
1760 |
* Don't do something after an error, interrupt or throw in the try
|
|
|
1761 |
* block, catch clause, or finally clause preceding this ":endtry" or
|
|
|
1762 |
* when an error or interrupt occurred after a ":continue", ":break",
|
|
|
1763 |
* ":return", or ":finish" in a try block or catch clause preceding this
|
|
|
1764 |
* ":endtry" or when the try block never got active (because of an
|
|
|
1765 |
* inactive surrounding conditional or after an error or interrupt or
|
|
|
1766 |
* throw) or when there is a surrounding conditional and it has been
|
|
|
1767 |
* made inactive by a ":continue", ":break", ":return", or ":finish" in
|
|
|
1768 |
* the finally clause. The latter case need not be tested since then
|
|
|
1769 |
* anything pending has already been discarded. */
|
|
|
1770 |
skip = did_emsg || got_int || did_throw ||
|
|
|
1771 |
!(cstack->cs_flags[cstack->cs_idx] & CSF_TRUE);
|
|
|
1772 |
|
|
|
1773 |
if (!(cstack->cs_flags[cstack->cs_idx] & CSF_TRY))
|
|
|
1774 |
{
|
|
|
1775 |
eap->errmsg = get_end_emsg(cstack);
|
|
|
1776 |
/* Find the matching ":try" and report what's missing. */
|
|
|
1777 |
idx = cstack->cs_idx;
|
|
|
1778 |
do
|
|
|
1779 |
--idx;
|
|
|
1780 |
while (idx > 0 && !(cstack->cs_flags[idx] & CSF_TRY));
|
|
|
1781 |
rewind_conditionals(cstack, idx, CSF_WHILE | CSF_FOR,
|
|
|
1782 |
&cstack->cs_looplevel);
|
|
|
1783 |
skip = TRUE;
|
|
|
1784 |
|
|
|
1785 |
/*
|
|
|
1786 |
* If an exception is being thrown, discard it to prevent it from
|
|
|
1787 |
* being rethrown at the end of this function. It would be
|
|
|
1788 |
* discarded by the error message, anyway. Resets did_throw.
|
|
|
1789 |
* This does not affect the script termination due to the error
|
|
|
1790 |
* since "trylevel" is decremented after emsg() has been called.
|
|
|
1791 |
*/
|
|
|
1792 |
if (did_throw)
|
|
|
1793 |
discard_current_exception();
|
|
|
1794 |
}
|
|
|
1795 |
else
|
|
|
1796 |
{
|
|
|
1797 |
idx = cstack->cs_idx;
|
|
|
1798 |
|
|
|
1799 |
/*
|
|
|
1800 |
* If we stopped with the exception currently being thrown at this
|
|
|
1801 |
* try conditional since we didn't know that it doesn't have
|
|
|
1802 |
* a finally clause, we need to rethrow it after closing the try
|
|
|
1803 |
* conditional.
|
|
|
1804 |
*/
|
|
|
1805 |
if (did_throw && (cstack->cs_flags[idx] & CSF_TRUE)
|
|
|
1806 |
&& !(cstack->cs_flags[idx] & CSF_FINALLY))
|
|
|
1807 |
rethrow = TRUE;
|
|
|
1808 |
}
|
|
|
1809 |
|
|
|
1810 |
/* If there was no finally clause, show the user when debugging or
|
|
|
1811 |
* a breakpoint was encountered that the end of the try conditional has
|
|
|
1812 |
* been reached: display the debug prompt (if not already done). Do
|
|
|
1813 |
* this on normal control flow or when an exception was thrown, but not
|
|
|
1814 |
* on an interrupt or error not converted to an exception or when
|
|
|
1815 |
* a ":break", ":continue", ":return", or ":finish" is pending. These
|
|
|
1816 |
* actions are carried out immediately.
|
|
|
1817 |
*/
|
|
|
1818 |
if ((rethrow || (!skip
|
|
|
1819 |
&& !(cstack->cs_flags[idx] & CSF_FINALLY)
|
|
|
1820 |
&& !cstack->cs_pending[idx]))
|
|
|
1821 |
&& dbg_check_skipped(eap))
|
|
|
1822 |
{
|
|
|
1823 |
/* Handle a ">quit" debug command as if an interrupt had occurred
|
|
|
1824 |
* before the ":endtry". That is, throw an interrupt exception and
|
|
|
1825 |
* set "skip" and "rethrow". */
|
|
|
1826 |
if (got_int)
|
|
|
1827 |
{
|
|
|
1828 |
skip = TRUE;
|
|
|
1829 |
(void)do_intthrow(cstack);
|
|
|
1830 |
/* The do_intthrow() call may have reset did_throw or
|
|
|
1831 |
* cstack->cs_pending[idx].*/
|
|
|
1832 |
rethrow = FALSE;
|
|
|
1833 |
if (did_throw && !(cstack->cs_flags[idx] & CSF_FINALLY))
|
|
|
1834 |
rethrow = TRUE;
|
|
|
1835 |
}
|
|
|
1836 |
}
|
|
|
1837 |
|
|
|
1838 |
/*
|
|
|
1839 |
* If a ":return" is pending, we need to resume it after closing the
|
|
|
1840 |
* try conditional; remember the return value. If there was a finally
|
|
|
1841 |
* clause making an exception pending, we need to rethrow it. Make it
|
|
|
1842 |
* the exception currently being thrown.
|
|
|
1843 |
*/
|
|
|
1844 |
if (!skip)
|
|
|
1845 |
{
|
|
|
1846 |
pending = cstack->cs_pending[idx];
|
|
|
1847 |
cstack->cs_pending[idx] = CSTP_NONE;
|
|
|
1848 |
if (pending == CSTP_RETURN)
|
|
|
1849 |
rettv = cstack->cs_rettv[idx];
|
|
|
1850 |
else if (pending & CSTP_THROW)
|
|
|
1851 |
current_exception = cstack->cs_exception[idx];
|
|
|
1852 |
}
|
|
|
1853 |
|
|
|
1854 |
/*
|
|
|
1855 |
* Discard anything pending on an error, interrupt, or throw in the
|
|
|
1856 |
* finally clause. If there was no ":finally", discard a pending
|
|
|
1857 |
* ":continue", ":break", ":return", or ":finish" if an error or
|
|
|
1858 |
* interrupt occurred afterwards, but before the ":endtry" was reached.
|
|
|
1859 |
* If an exception was caught by the last of the catch clauses and there
|
|
|
1860 |
* was no finally clause, finish the exception now. This happens also
|
|
|
1861 |
* after errors except when this ":endtry" is not within a ":try".
|
|
|
1862 |
* Restore "emsg_silent" if it has been reset by this try conditional.
|
|
|
1863 |
*/
|
|
|
1864 |
(void)cleanup_conditionals(cstack, CSF_TRY | CSF_SILENT, TRUE);
|
|
|
1865 |
|
|
|
1866 |
--cstack->cs_idx;
|
|
|
1867 |
--cstack->cs_trylevel;
|
|
|
1868 |
|
|
|
1869 |
if (!skip)
|
|
|
1870 |
{
|
|
|
1871 |
report_resume_pending(pending,
|
|
|
1872 |
(pending == CSTP_RETURN) ? rettv :
|
|
|
1873 |
(pending & CSTP_THROW) ? (void *)current_exception : NULL);
|
|
|
1874 |
switch (pending)
|
|
|
1875 |
{
|
|
|
1876 |
case CSTP_NONE:
|
|
|
1877 |
break;
|
|
|
1878 |
|
|
|
1879 |
/* Reactivate a pending ":continue", ":break", ":return",
|
|
|
1880 |
* ":finish" from the try block or a catch clause of this try
|
|
|
1881 |
* conditional. This is skipped, if there was an error in an
|
|
|
1882 |
* (unskipped) conditional command or an interrupt afterwards
|
|
|
1883 |
* or if the finally clause is present and executed a new error,
|
|
|
1884 |
* interrupt, throw, ":continue", ":break", ":return", or
|
|
|
1885 |
* ":finish". */
|
|
|
1886 |
case CSTP_CONTINUE:
|
|
|
1887 |
ex_continue(eap);
|
|
|
1888 |
break;
|
|
|
1889 |
case CSTP_BREAK:
|
|
|
1890 |
ex_break(eap);
|
|
|
1891 |
break;
|
|
|
1892 |
case CSTP_RETURN:
|
|
|
1893 |
do_return(eap, FALSE, FALSE, rettv);
|
|
|
1894 |
break;
|
|
|
1895 |
case CSTP_FINISH:
|
|
|
1896 |
do_finish(eap, FALSE);
|
|
|
1897 |
break;
|
|
|
1898 |
|
|
|
1899 |
/* When the finally clause was entered due to an error,
|
|
|
1900 |
* interrupt or throw (as opposed to a ":continue", ":break",
|
|
|
1901 |
* ":return", or ":finish"), restore the pending values of
|
|
|
1902 |
* did_emsg, got_int, and did_throw. This is skipped, if there
|
|
|
1903 |
* was a new error, interrupt, throw, ":continue", ":break",
|
|
|
1904 |
* ":return", or ":finish". in the finally clause. */
|
|
|
1905 |
default:
|
|
|
1906 |
if (pending & CSTP_ERROR)
|
|
|
1907 |
did_emsg = TRUE;
|
|
|
1908 |
if (pending & CSTP_INTERRUPT)
|
|
|
1909 |
got_int = TRUE;
|
|
|
1910 |
if (pending & CSTP_THROW)
|
|
|
1911 |
rethrow = TRUE;
|
|
|
1912 |
break;
|
|
|
1913 |
}
|
|
|
1914 |
}
|
|
|
1915 |
|
|
|
1916 |
if (rethrow)
|
|
|
1917 |
/* Rethrow the current exception (within this cstack). */
|
|
|
1918 |
do_throw(cstack);
|
|
|
1919 |
}
|
|
|
1920 |
}
|
|
|
1921 |
|
|
|
1922 |
/*
|
|
|
1923 |
* enter_cleanup() and leave_cleanup()
|
|
|
1924 |
*
|
|
|
1925 |
* Functions to be called before/after invoking a sequence of autocommands for
|
|
|
1926 |
* cleanup for a failed command. (Failure means here that a call to emsg()
|
|
|
1927 |
* has been made, an interrupt occurred, or there is an uncaught exception
|
|
|
1928 |
* from a previous autocommand execution of the same command.)
|
|
|
1929 |
*
|
|
|
1930 |
* Call enter_cleanup() with a pointer to a cleanup_T and pass the same
|
|
|
1931 |
* pointer to leave_cleanup(). The cleanup_T structure stores the pending
|
|
|
1932 |
* error/interrupt/exception state.
|
|
|
1933 |
*/
|
|
|
1934 |
|
|
|
1935 |
/*
|
|
|
1936 |
* This function works a bit like ex_finally() except that there was not
|
|
|
1937 |
* actually an extra try block around the part that failed and an error or
|
|
|
1938 |
* interrupt has not (yet) been converted to an exception. This function
|
|
|
1939 |
* saves the error/interrupt/ exception state and prepares for the call to
|
|
|
1940 |
* do_cmdline() that is going to be made for the cleanup autocommand
|
|
|
1941 |
* execution.
|
|
|
1942 |
*/
|
|
|
1943 |
void
|
|
|
1944 |
enter_cleanup(csp)
|
|
|
1945 |
cleanup_T *csp;
|
|
|
1946 |
{
|
|
|
1947 |
int pending = CSTP_NONE;
|
|
|
1948 |
|
|
|
1949 |
/*
|
|
|
1950 |
* Postpone did_emsg, got_int, did_throw. The pending values will be
|
|
|
1951 |
* restored by leave_cleanup() except if there was an aborting error,
|
|
|
1952 |
* interrupt, or uncaught exception after this function ends.
|
|
|
1953 |
*/
|
|
|
1954 |
if (did_emsg || got_int || did_throw || need_rethrow)
|
|
|
1955 |
{
|
|
|
1956 |
csp->pending = (did_emsg ? CSTP_ERROR : 0)
|
|
|
1957 |
| (got_int ? CSTP_INTERRUPT : 0)
|
|
|
1958 |
| (did_throw ? CSTP_THROW : 0)
|
|
|
1959 |
| (need_rethrow ? CSTP_THROW : 0);
|
|
|
1960 |
|
|
|
1961 |
/* If we are currently throwing an exception (did_throw), save it as
|
|
|
1962 |
* well. On an error not yet converted to an exception, update
|
|
|
1963 |
* "force_abort" and reset "cause_abort" (as do_errthrow() would do).
|
|
|
1964 |
* This is needed for the do_cmdline() call that is going to be made
|
|
|
1965 |
* for autocommand execution. We need not save *msg_list because
|
|
|
1966 |
* there is an extra instance for every call of do_cmdline(), anyway.
|
|
|
1967 |
*/
|
|
|
1968 |
if (did_throw || need_rethrow)
|
|
|
1969 |
csp->exception = current_exception;
|
|
|
1970 |
else
|
|
|
1971 |
{
|
|
|
1972 |
csp->exception = NULL;
|
|
|
1973 |
if (did_emsg)
|
|
|
1974 |
{
|
|
|
1975 |
force_abort |= cause_abort;
|
|
|
1976 |
cause_abort = FALSE;
|
|
|
1977 |
}
|
|
|
1978 |
}
|
|
|
1979 |
did_emsg = got_int = did_throw = need_rethrow = FALSE;
|
|
|
1980 |
|
|
|
1981 |
/* Report if required by the 'verbose' option or when debugging. */
|
|
|
1982 |
report_make_pending(pending, csp->exception);
|
|
|
1983 |
}
|
|
|
1984 |
else
|
|
|
1985 |
{
|
|
|
1986 |
csp->pending = CSTP_NONE;
|
|
|
1987 |
csp->exception = NULL;
|
|
|
1988 |
}
|
|
|
1989 |
}
|
|
|
1990 |
|
|
|
1991 |
/*
|
|
|
1992 |
* See comment above enter_cleanup() for how this function is used.
|
|
|
1993 |
*
|
|
|
1994 |
* This function is a bit like ex_endtry() except that there was not actually
|
|
|
1995 |
* an extra try block around the part that failed and an error or interrupt
|
|
|
1996 |
* had not (yet) been converted to an exception when the cleanup autocommand
|
|
|
1997 |
* sequence was invoked.
|
|
|
1998 |
*
|
|
|
1999 |
* This function has to be called with the address of the cleanup_T structure
|
|
|
2000 |
* filled by enter_cleanup() as an argument; it restores the error/interrupt/
|
|
|
2001 |
* exception state saved by that function - except there was an aborting
|
|
|
2002 |
* error, an interrupt or an uncaught exception during execution of the
|
|
|
2003 |
* cleanup autocommands. In the latter case, the saved error/interrupt/
|
|
|
2004 |
* exception state is discarded.
|
|
|
2005 |
*/
|
|
|
2006 |
void
|
|
|
2007 |
leave_cleanup(csp)
|
|
|
2008 |
cleanup_T *csp;
|
|
|
2009 |
{
|
|
|
2010 |
int pending = csp->pending;
|
|
|
2011 |
|
|
|
2012 |
if (pending == CSTP_NONE) /* nothing to do */
|
|
|
2013 |
return;
|
|
|
2014 |
|
|
|
2015 |
/* If there was an aborting error, an interrupt, or an uncaught exception
|
|
|
2016 |
* after the corresponding call to enter_cleanup(), discard what has been
|
|
|
2017 |
* made pending by it. Report this to the user if required by the
|
|
|
2018 |
* 'verbose' option or when debugging. */
|
|
|
2019 |
if (aborting() || need_rethrow)
|
|
|
2020 |
{
|
|
|
2021 |
if (pending & CSTP_THROW)
|
|
|
2022 |
/* Cancel the pending exception (includes report). */
|
|
|
2023 |
discard_exception((except_T *)csp->exception, FALSE);
|
|
|
2024 |
else
|
|
|
2025 |
report_discard_pending(pending, NULL);
|
|
|
2026 |
|
|
|
2027 |
/* If an error was about to be converted to an exception when
|
|
|
2028 |
* enter_cleanup() was called, free the message list. */
|
|
|
2029 |
if (msg_list != NULL)
|
|
|
2030 |
{
|
|
|
2031 |
free_msglist(*msg_list);
|
|
|
2032 |
*msg_list = NULL;
|
|
|
2033 |
}
|
|
|
2034 |
}
|
|
|
2035 |
|
|
|
2036 |
/*
|
|
|
2037 |
* If there was no new error, interrupt, or throw between the calls
|
|
|
2038 |
* to enter_cleanup() and leave_cleanup(), restore the pending
|
|
|
2039 |
* error/interrupt/exception state.
|
|
|
2040 |
*/
|
|
|
2041 |
else
|
|
|
2042 |
{
|
|
|
2043 |
/*
|
|
|
2044 |
* If there was an exception being thrown when enter_cleanup() was
|
|
|
2045 |
* called, we need to rethrow it. Make it the exception currently
|
|
|
2046 |
* being thrown.
|
|
|
2047 |
*/
|
|
|
2048 |
if (pending & CSTP_THROW)
|
|
|
2049 |
current_exception = csp->exception;
|
|
|
2050 |
|
|
|
2051 |
/*
|
|
|
2052 |
* If an error was about to be converted to an exception when
|
|
|
2053 |
* enter_cleanup() was called, let "cause_abort" take the part of
|
|
|
2054 |
* "force_abort" (as done by cause_errthrow()).
|
|
|
2055 |
*/
|
|
|
2056 |
else if (pending & CSTP_ERROR)
|
|
|
2057 |
{
|
|
|
2058 |
cause_abort = force_abort;
|
|
|
2059 |
force_abort = FALSE;
|
|
|
2060 |
}
|
|
|
2061 |
|
|
|
2062 |
/*
|
|
|
2063 |
* Restore the pending values of did_emsg, got_int, and did_throw.
|
|
|
2064 |
*/
|
|
|
2065 |
if (pending & CSTP_ERROR)
|
|
|
2066 |
did_emsg = TRUE;
|
|
|
2067 |
if (pending & CSTP_INTERRUPT)
|
|
|
2068 |
got_int = TRUE;
|
|
|
2069 |
if (pending & CSTP_THROW)
|
|
|
2070 |
need_rethrow = TRUE; /* did_throw will be set by do_one_cmd() */
|
|
|
2071 |
|
|
|
2072 |
/* Report if required by the 'verbose' option or when debugging. */
|
|
|
2073 |
report_resume_pending(pending,
|
|
|
2074 |
(pending & CSTP_THROW) ? (void *)current_exception : NULL);
|
|
|
2075 |
}
|
|
|
2076 |
}
|
|
|
2077 |
|
|
|
2078 |
|
|
|
2079 |
/*
|
|
|
2080 |
* Make conditionals inactive and discard what's pending in finally clauses
|
|
|
2081 |
* until the conditional type searched for or a try conditional not in its
|
|
|
2082 |
* finally clause is reached. If this is in an active catch clause, finish
|
|
|
2083 |
* the caught exception.
|
|
|
2084 |
* Return the cstack index where the search stopped.
|
|
|
2085 |
* Values used for "searched_cond" are (CSF_WHILE | CSF_FOR) or CSF_TRY or 0,
|
|
|
2086 |
* the latter meaning the innermost try conditional not in its finally clause.
|
|
|
2087 |
* "inclusive" tells whether the conditional searched for should be made
|
|
|
2088 |
* inactive itself (a try conditional not in its finally claused possibly find
|
|
|
2089 |
* before is always made inactive). If "inclusive" is TRUE and
|
|
|
2090 |
* "searched_cond" is CSF_TRY|CSF_SILENT, the saved former value of
|
|
|
2091 |
* "emsg_silent", if reset when the try conditional finally reached was
|
|
|
2092 |
* entered, is restored (unsed by ex_endtry()). This is normally done only
|
|
|
2093 |
* when such a try conditional is left.
|
|
|
2094 |
*/
|
|
|
2095 |
int
|
|
|
2096 |
cleanup_conditionals(cstack, searched_cond, inclusive)
|
|
|
2097 |
struct condstack *cstack;
|
|
|
2098 |
int searched_cond;
|
|
|
2099 |
int inclusive;
|
|
|
2100 |
{
|
|
|
2101 |
int idx;
|
|
|
2102 |
int stop = FALSE;
|
|
|
2103 |
|
|
|
2104 |
for (idx = cstack->cs_idx; idx >= 0; --idx)
|
|
|
2105 |
{
|
|
|
2106 |
if (cstack->cs_flags[idx] & CSF_TRY)
|
|
|
2107 |
{
|
|
|
2108 |
/*
|
|
|
2109 |
* Discard anything pending in a finally clause and continue the
|
|
|
2110 |
* search. There may also be a pending ":continue", ":break",
|
|
|
2111 |
* ":return", or ":finish" before the finally clause. We must not
|
|
|
2112 |
* discard it, unless an error or interrupt occurred afterwards.
|
|
|
2113 |
*/
|
|
|
2114 |
if (did_emsg || got_int || (cstack->cs_flags[idx] & CSF_FINALLY))
|
|
|
2115 |
{
|
|
|
2116 |
switch (cstack->cs_pending[idx])
|
|
|
2117 |
{
|
|
|
2118 |
case CSTP_NONE:
|
|
|
2119 |
break;
|
|
|
2120 |
|
|
|
2121 |
case CSTP_CONTINUE:
|
|
|
2122 |
case CSTP_BREAK:
|
|
|
2123 |
case CSTP_FINISH:
|
|
|
2124 |
report_discard_pending(cstack->cs_pending[idx], NULL);
|
|
|
2125 |
cstack->cs_pending[idx] = CSTP_NONE;
|
|
|
2126 |
break;
|
|
|
2127 |
|
|
|
2128 |
case CSTP_RETURN:
|
|
|
2129 |
report_discard_pending(CSTP_RETURN,
|
|
|
2130 |
cstack->cs_rettv[idx]);
|
|
|
2131 |
discard_pending_return(cstack->cs_rettv[idx]);
|
|
|
2132 |
cstack->cs_pending[idx] = CSTP_NONE;
|
|
|
2133 |
break;
|
|
|
2134 |
|
|
|
2135 |
default:
|
|
|
2136 |
if (cstack->cs_flags[idx] & CSF_FINALLY)
|
|
|
2137 |
{
|
|
|
2138 |
if (cstack->cs_pending[idx] & CSTP_THROW)
|
|
|
2139 |
{
|
|
|
2140 |
/* Cancel the pending exception. This is in the
|
|
|
2141 |
* finally clause, so that the stack of the
|
|
|
2142 |
* caught exceptions is not involved. */
|
|
|
2143 |
discard_exception((except_T *)
|
|
|
2144 |
cstack->cs_exception[idx],
|
|
|
2145 |
FALSE);
|
|
|
2146 |
}
|
|
|
2147 |
else
|
|
|
2148 |
report_discard_pending(cstack->cs_pending[idx],
|
|
|
2149 |
NULL);
|
|
|
2150 |
cstack->cs_pending[idx] = CSTP_NONE;
|
|
|
2151 |
}
|
|
|
2152 |
break;
|
|
|
2153 |
}
|
|
|
2154 |
}
|
|
|
2155 |
|
|
|
2156 |
/*
|
|
|
2157 |
* Stop at a try conditional not in its finally clause. If this try
|
|
|
2158 |
* conditional is in an active catch clause, finish the caught
|
|
|
2159 |
* exception.
|
|
|
2160 |
*/
|
|
|
2161 |
if (!(cstack->cs_flags[idx] & CSF_FINALLY))
|
|
|
2162 |
{
|
|
|
2163 |
if ((cstack->cs_flags[idx] & CSF_ACTIVE)
|
|
|
2164 |
&& (cstack->cs_flags[idx] & CSF_CAUGHT))
|
|
|
2165 |
finish_exception((except_T *)cstack->cs_exception[idx]);
|
|
|
2166 |
/* Stop at this try conditional - except the try block never
|
|
|
2167 |
* got active (because of an inactive surrounding conditional
|
|
|
2168 |
* or when the ":try" appeared after an error or interrupt or
|
|
|
2169 |
* throw). */
|
|
|
2170 |
if (cstack->cs_flags[idx] & CSF_TRUE)
|
|
|
2171 |
{
|
|
|
2172 |
if (searched_cond == 0 && !inclusive)
|
|
|
2173 |
break;
|
|
|
2174 |
stop = TRUE;
|
|
|
2175 |
}
|
|
|
2176 |
}
|
|
|
2177 |
}
|
|
|
2178 |
|
|
|
2179 |
/* Stop on the searched conditional type (even when the surrounding
|
|
|
2180 |
* conditional is not active or something has been made pending).
|
|
|
2181 |
* If "inclusive" is TRUE and "searched_cond" is CSF_TRY|CSF_SILENT,
|
|
|
2182 |
* check first whether "emsg_silent" needs to be restored. */
|
|
|
2183 |
if (cstack->cs_flags[idx] & searched_cond)
|
|
|
2184 |
{
|
|
|
2185 |
if (!inclusive)
|
|
|
2186 |
break;
|
|
|
2187 |
stop = TRUE;
|
|
|
2188 |
}
|
|
|
2189 |
cstack->cs_flags[idx] &= ~CSF_ACTIVE;
|
|
|
2190 |
if (stop && searched_cond != (CSF_TRY | CSF_SILENT))
|
|
|
2191 |
break;
|
|
|
2192 |
|
|
|
2193 |
/*
|
|
|
2194 |
* When leaving a try conditional that reset "emsg_silent" on its
|
|
|
2195 |
* entry after saving the original value, restore that value here and
|
|
|
2196 |
* free the memory used to store it.
|
|
|
2197 |
*/
|
|
|
2198 |
if ((cstack->cs_flags[idx] & CSF_TRY)
|
|
|
2199 |
&& (cstack->cs_flags[idx] & CSF_SILENT))
|
|
|
2200 |
{
|
|
|
2201 |
eslist_T *elem;
|
|
|
2202 |
|
|
|
2203 |
elem = cstack->cs_emsg_silent_list;
|
|
|
2204 |
cstack->cs_emsg_silent_list = elem->next;
|
|
|
2205 |
emsg_silent = elem->saved_emsg_silent;
|
|
|
2206 |
vim_free(elem);
|
|
|
2207 |
cstack->cs_flags[idx] &= ~CSF_SILENT;
|
|
|
2208 |
}
|
|
|
2209 |
if (stop)
|
|
|
2210 |
break;
|
|
|
2211 |
}
|
|
|
2212 |
return idx;
|
|
|
2213 |
}
|
|
|
2214 |
|
|
|
2215 |
/*
|
|
|
2216 |
* Return an appropriate error message for a missing endwhile/endfor/endif.
|
|
|
2217 |
*/
|
|
|
2218 |
static char_u *
|
|
|
2219 |
get_end_emsg(cstack)
|
|
|
2220 |
struct condstack *cstack;
|
|
|
2221 |
{
|
|
|
2222 |
if (cstack->cs_flags[cstack->cs_idx] & CSF_WHILE)
|
|
|
2223 |
return e_endwhile;
|
|
|
2224 |
if (cstack->cs_flags[cstack->cs_idx] & CSF_FOR)
|
|
|
2225 |
return e_endfor;
|
|
|
2226 |
return e_endif;
|
|
|
2227 |
}
|
|
|
2228 |
|
|
|
2229 |
|
|
|
2230 |
/*
|
|
|
2231 |
* Rewind conditionals until index "idx" is reached. "cond_type" and
|
|
|
2232 |
* "cond_level" specify a conditional type and the address of a level variable
|
|
|
2233 |
* which is to be decremented with each skipped conditional of the specified
|
|
|
2234 |
* type.
|
|
|
2235 |
* Also free "for info" structures where needed.
|
|
|
2236 |
*/
|
|
|
2237 |
void
|
|
|
2238 |
rewind_conditionals(cstack, idx, cond_type, cond_level)
|
|
|
2239 |
struct condstack *cstack;
|
|
|
2240 |
int idx;
|
|
|
2241 |
int cond_type;
|
|
|
2242 |
int *cond_level;
|
|
|
2243 |
{
|
|
|
2244 |
while (cstack->cs_idx > idx)
|
|
|
2245 |
{
|
|
|
2246 |
if (cstack->cs_flags[cstack->cs_idx] & cond_type)
|
|
|
2247 |
--*cond_level;
|
|
|
2248 |
if (cstack->cs_flags[cstack->cs_idx] & CSF_FOR)
|
|
|
2249 |
free_for_info(cstack->cs_forinfo[cstack->cs_idx]);
|
|
|
2250 |
--cstack->cs_idx;
|
|
|
2251 |
}
|
|
|
2252 |
}
|
|
|
2253 |
|
|
|
2254 |
/*
|
|
|
2255 |
* ":endfunction" when not after a ":function"
|
|
|
2256 |
*/
|
|
|
2257 |
/*ARGSUSED*/
|
|
|
2258 |
void
|
|
|
2259 |
ex_endfunction(eap)
|
|
|
2260 |
exarg_T *eap;
|
|
|
2261 |
{
|
|
|
2262 |
EMSG(_("E193: :endfunction not inside a function"));
|
|
|
2263 |
}
|
|
|
2264 |
|
|
|
2265 |
/*
|
|
|
2266 |
* Return TRUE if the string "p" looks like a ":while" or ":for" command.
|
|
|
2267 |
*/
|
|
|
2268 |
int
|
|
|
2269 |
has_loop_cmd(p)
|
|
|
2270 |
char_u *p;
|
|
|
2271 |
{
|
|
|
2272 |
p = skipwhite(p);
|
|
|
2273 |
while (*p == ':')
|
|
|
2274 |
p = skipwhite(p + 1);
|
|
|
2275 |
if ((p[0] == 'w' && p[1] == 'h')
|
|
|
2276 |
|| (p[0] == 'f' && p[1] == 'o' && p[2] == 'r'))
|
|
|
2277 |
return TRUE;
|
|
|
2278 |
return FALSE;
|
|
|
2279 |
}
|
|
|
2280 |
|
|
|
2281 |
#endif /* FEAT_EVAL */
|