gdb/
2008-08-16 Vladimir Prus <vladimir@codesourcery.com> Thiago Jung Bauermann <bauerman@br.ibm.com> * cli-script.c (read_next_line): Add parse_commands argument. (recurse_read_control_structure): Adapt to new read_next_line signature. (read_command_lines): Add parse_commands argument. (define_command): Adapt to new read_command_lines signature. (document_command): Likewise. * breakpoint.c (commands_command): Likewise. * defs.h (read_command_lines): Adjust function prototype. testsuite/ 2008-08-16 Thiago Jung Bauermann <bauerman@br.ibm.com> * gdb.base/define.exp: Test indented command documentation. * gdb.python/python.exp: Test indented multi-line command.
This commit is contained in:
Thiago Jung Bauermann
parent
24209737f0
commit
311a4e6b7b
7 changed files with 143 additions and 75 deletions
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@ -839,14 +839,19 @@ realloc_body_list (struct command_line *command, int new_length)
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command->body_count = new_length;
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}
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/* Read one line from the input stream. If the command is an "else" or
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"end", return such an indication to the caller. */
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/* Read one line from the input stream. If the command is an "end",
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return such an indication to the caller. If PARSE_COMMANDS is true,
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strip leading whitespace (trailing whitespace is always stripped)
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in the line, attempt to recognize GDB control commands, and also
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return an indication if the command is an "else" or a nop.
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Otherwise, only "end" is recognized. */
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static enum misc_command_type
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read_next_line (struct command_line **command)
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read_next_line (struct command_line **command, int parse_commands)
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{
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char *p, *p1, *prompt_ptr, control_prompt[256];
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int i = 0;
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int not_handled = 0;
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if (control_level >= 254)
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error (_("Control nesting too deep!"));
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@ -869,81 +874,91 @@ read_next_line (struct command_line **command)
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if (p == NULL)
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return end_command;
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/* Strip leading and trailing whitespace. */
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while (*p == ' ' || *p == '\t')
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p++;
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if (parse_commands)
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{
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/* Strip leading whitespace. */
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while (*p == ' ' || *p == '\t')
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p++;
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}
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/* Strip trailing whitespace. */
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p1 = p + strlen (p);
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while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
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p1--;
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/* Blanks and comments don't really do anything, but we need to
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distinguish them from else, end and other commands which can be
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executed. */
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if (p1 == p || p[0] == '#')
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return nop_command;
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/* Is this the end of a simple, while, or if control structure? */
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if (p1 - p == 3 && !strncmp (p, "end", 3))
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return end_command;
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/* Is the else clause of an if control structure? */
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if (p1 - p == 4 && !strncmp (p, "else", 4))
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return else_command;
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if (parse_commands)
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{
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/* Blanks and comments don't really do anything, but we need to
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distinguish them from else, end and other commands which can be
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executed. */
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if (p1 == p || p[0] == '#')
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return nop_command;
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/* Check for while, if, break, continue, etc and build a new command
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line structure for them. */
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if (p1 - p > 5 && !strncmp (p, "while", 5))
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{
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char *first_arg;
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first_arg = p + 5;
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while (first_arg < p1 && isspace (*first_arg))
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first_arg++;
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*command = build_command_line (while_control, first_arg);
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/* Is the else clause of an if control structure? */
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if (p1 - p == 4 && !strncmp (p, "else", 4))
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return else_command;
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/* Check for while, if, break, continue, etc and build a new command
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line structure for them. */
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if (p1 - p > 5 && !strncmp (p, "while", 5))
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{
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char *first_arg;
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first_arg = p + 5;
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while (first_arg < p1 && isspace (*first_arg))
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first_arg++;
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*command = build_command_line (while_control, first_arg);
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}
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else if (p1 - p > 2 && !strncmp (p, "if", 2))
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{
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char *first_arg;
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first_arg = p + 2;
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while (first_arg < p1 && isspace (*first_arg))
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first_arg++;
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*command = build_command_line (if_control, first_arg);
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}
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else if (p1 - p >= 8 && !strncmp (p, "commands", 8))
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{
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char *first_arg;
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first_arg = p + 8;
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while (first_arg < p1 && isspace (*first_arg))
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first_arg++;
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*command = build_command_line (commands_control, first_arg);
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}
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else if (p1 - p == 6 && !strncmp (p, "python", 6))
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{
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/* Note that we ignore the inline "python command" form
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here. */
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*command = build_command_line (python_control, "");
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}
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else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
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{
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*command = (struct command_line *)
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xmalloc (sizeof (struct command_line));
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(*command)->next = NULL;
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(*command)->line = NULL;
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(*command)->control_type = break_control;
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(*command)->body_count = 0;
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(*command)->body_list = NULL;
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}
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else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
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{
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*command = (struct command_line *)
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xmalloc (sizeof (struct command_line));
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(*command)->next = NULL;
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(*command)->line = NULL;
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(*command)->control_type = continue_control;
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(*command)->body_count = 0;
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(*command)->body_list = NULL;
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}
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else
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not_handled = 1;
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}
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else if (p1 - p > 2 && !strncmp (p, "if", 2))
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{
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char *first_arg;
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first_arg = p + 2;
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while (first_arg < p1 && isspace (*first_arg))
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first_arg++;
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*command = build_command_line (if_control, first_arg);
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}
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else if (p1 - p >= 8 && !strncmp (p, "commands", 8))
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{
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char *first_arg;
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first_arg = p + 8;
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while (first_arg < p1 && isspace (*first_arg))
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first_arg++;
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*command = build_command_line (commands_control, first_arg);
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}
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else if (p1 - p == 6 && !strncmp (p, "python", 6))
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{
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/* Note that we ignore the inline "python command" form
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here. */
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*command = build_command_line (python_control, "");
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}
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else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
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{
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*command = (struct command_line *)
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xmalloc (sizeof (struct command_line));
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(*command)->next = NULL;
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(*command)->line = NULL;
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(*command)->control_type = break_control;
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(*command)->body_count = 0;
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(*command)->body_list = NULL;
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}
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else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
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{
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*command = (struct command_line *)
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xmalloc (sizeof (struct command_line));
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(*command)->next = NULL;
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(*command)->line = NULL;
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(*command)->control_type = continue_control;
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(*command)->body_count = 0;
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(*command)->body_list = NULL;
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}
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else
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if (!parse_commands || not_handled)
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{
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/* A normal command. */
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*command = (struct command_line *)
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@ -989,7 +1004,7 @@ recurse_read_control_structure (struct command_line *current_cmd)
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dont_repeat ();
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next = NULL;
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val = read_next_line (&next);
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val = read_next_line (&next, current_cmd->control_type != python_control);
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/* Just skip blanks and comments. */
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if (val == nop_command)
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@ -1071,12 +1086,16 @@ recurse_read_control_structure (struct command_line *current_cmd)
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/* Read lines from the input stream and accumulate them in a chain of
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struct command_line's, which is then returned. For input from a
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terminal, the special command "end" is used to mark the end of the
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input, and is not included in the returned chain of commands. */
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input, and is not included in the returned chain of commands.
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If PARSE_COMMANDS is true, strip leading whitespace (trailing whitespace
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is always stripped) in the line and attempt to recognize GDB control
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commands. Otherwise, only "end" is recognized. */
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#define END_MESSAGE "End with a line saying just \"end\"."
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struct command_line *
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read_command_lines (char *prompt_arg, int from_tty)
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read_command_lines (char *prompt_arg, int from_tty, int parse_commands)
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{
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struct command_line *head, *tail, *next;
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struct cleanup *old_chain;
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@ -1105,7 +1124,7 @@ read_command_lines (char *prompt_arg, int from_tty)
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while (1)
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{
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dont_repeat ();
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val = read_next_line (&next);
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val = read_next_line (&next, parse_commands);
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/* Ignore blank lines or comments. */
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if (val == nop_command)
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@ -1339,7 +1358,7 @@ define_command (char *comname, int from_tty)
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*tem = tolower (*tem);
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sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
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cmds = read_command_lines (tmpbuf, from_tty);
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cmds = read_command_lines (tmpbuf, from_tty, 1);
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if (c && c->class == class_user)
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free_command_lines (&c->user_commands);
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@ -1386,7 +1405,7 @@ document_command (char *comname, int from_tty)
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error (_("Command \"%s\" is built-in."), comname);
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sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
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doclines = read_command_lines (tmpbuf, from_tty);
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doclines = read_command_lines (tmpbuf, from_tty, 0);
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if (c->doc)
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xfree (c->doc);
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