diff options
Diffstat (limited to 'gdb/ui-out.h')
-rw-r--r-- | gdb/ui-out.h | 142 |
1 files changed, 140 insertions, 2 deletions
diff --git a/gdb/ui-out.h b/gdb/ui-out.h index 6732f04..0bba128 100644 --- a/gdb/ui-out.h +++ b/gdb/ui-out.h @@ -53,6 +53,12 @@ enum ui_out_flag { ui_source_list = (1 << 0), fix_multi_location_breakpoint_output = (1 << 1), + /* For CLI output, this flag is set if unfiltered output is desired. + This should only be used by low-level formatting functions. */ + unfiltered_output = (1 << 2), + /* This indicates that %pF should be disallowed in a printf format + string. */ + disallow_ui_out_field = (1 << 3) }; DEF_ENUM_FLAGS_TYPE (ui_out_flag, ui_out_flags); @@ -68,6 +74,87 @@ enum ui_out_type ui_out_type_list }; +/* The possible kinds of fields. */ +enum class field_kind + { + SIGNED, + STRING, + }; + +/* The base type of all fields that can be emitted using %pF. */ + +struct base_field_s +{ + const char *name; + field_kind kind; +}; + +/* A signed integer field, to be passed to %pF in format strings. */ + +struct signed_field_s : base_field_s +{ + LONGEST val; +}; + +/* Construct a temporary signed_field_s on the caller's stack and + return a pointer to the constructed object. We use this because + it's not possible to pass a reference via va_args. */ + +static inline signed_field_s * +signed_field (const char *name, LONGEST val, + signed_field_s &&tmp = {}) +{ + tmp.name = name; + tmp.kind = field_kind::SIGNED; + tmp.val = val; + return &tmp; +} + +/* A string field, to be passed to %pF in format strings. */ + +struct string_field_s : base_field_s +{ + const char *str; +}; + +/* Construct a temporary string_field_s on the caller's stack and + return a pointer to the constructed object. We use this because + it's not possible to pass a reference via va_args. */ + +static inline string_field_s * +string_field (const char *name, const char *str, + string_field_s &&tmp = {}) +{ + tmp.name = name; + tmp.kind = field_kind::STRING; + tmp.str = str; + return &tmp; +} + +/* A styled string. */ + +struct styled_string_s +{ + /* The style. */ + ui_file_style style; + + /* The string. */ + const char *str; +}; + +/* Construct a temporary styled_string_s on the caller's stack and + return a pointer to the constructed object. We use this because + it's not possible to pass a reference via va_args. */ + +static inline styled_string_s * +styled_string (const ui_file_style &style, const char *str, + styled_string_s &&tmp = {}) +{ + tmp.style = style; + tmp.str = str; + return &tmp; +} + class ui_out { public: @@ -110,7 +197,55 @@ class ui_out void spaces (int numspaces); void text (const char *string); + + /* Output a printf-style formatted string. In addition to the usual + printf format specs, this supports a few GDB-specific + formatters: + + - '%pF' - output a field. + + The argument is a field, wrapped in any of the base_field_s + subclasses. signed_field for integer fields, string_field for + string fields. This is preferred over separate + uiout->field_signed(), uiout_>field_string() etc. calls when + the formatted message is translatable. E.g.: + + uiout->message (_("\nWatchpoint %pF deleted because the program has " + "left the block in\n" + "which its expression is valid.\n"), + signed_field ("wpnum", b->number)); + + - '%p[' - output the following text in a specified style. + '%p]' - output the following text in the default style. + + The argument to '%p[' is a ui_file_style pointer. The argument + to '%p]' must be nullptr. + + This is useful when you want to output some portion of a string + literal in some style. E.g.: + + uiout->message (_(" %p[<repeats %u times>%p]"), + metadata_style.style ().ptr (), + reps, repeats, nullptr); + + - '%ps' - output a styled string. + + The argument is the result of a call to styled_string. This is + useful when you want to output some runtime-generated string in + some style. E.g.: + + uiout->message (_("this is a target address %ps.\n"), + styled_string (address_style.style (), + paddress (gdbarch, pc))); + + Note that these all "abuse" the %p printf format spec, in order + to be compatible with GCC's printf format checking. This is OK + because code in GDB that wants to print a host address should use + host_address_to_string instead of %p. */ void message (const char *format, ...) ATTRIBUTE_PRINTF (2, 3); + void vmessage (const ui_file_style &in_style, + const char *format, va_list args) ATTRIBUTE_PRINTF (3, 0); + void wrap_hint (const char *identstring); void flush (); @@ -161,8 +296,9 @@ class ui_out ATTRIBUTE_PRINTF (6,0) = 0; virtual void do_spaces (int numspaces) = 0; virtual void do_text (const char *string) = 0; - virtual void do_message (const char *format, va_list args) - ATTRIBUTE_PRINTF (2,0) = 0; + virtual void do_message (const ui_file_style &style, + const char *format, va_list args) + ATTRIBUTE_PRINTF (3,0) = 0; virtual void do_wrap_hint (const char *identstring) = 0; virtual void do_flush () = 0; virtual void do_redirect (struct ui_file *outstream) = 0; @@ -174,6 +310,8 @@ class ui_out { return false; } private: + void call_do_message (const ui_file_style &style, const char *format, + ...); ui_out_flags m_flags; |