From: Tom Tromey <tom@tromey.com>
To: gdb-patches@sourceware.org
Cc: Tom Tromey <tom@tromey.com>
Subject: [PATCH v2 17/18] Use generic_emit_char in Pascal
Date: Thu, 17 Feb 2022 15:05:45 -0700 [thread overview]
Message-ID: <20220217220547.3874030-18-tom@tromey.com> (raw)
In-Reply-To: <20220217220547.3874030-1-tom@tromey.com>
This changes the Pascal to use generic_emit_char and generic_printstr.
The output isn't identical, though it does pass the Pascal tests
(during which I learned that FPC does not work with gold...).
I think this is an improvement, nevertheless, because the Pascal
expression parser accepts the C-style output that is now generated.
---
gdb/p-lang.c | 134 +++++++--------------------------------------------
gdb/p-lang.h | 12 -----
2 files changed, 18 insertions(+), 128 deletions(-)
diff --git a/gdb/p-lang.c b/gdb/p-lang.c
index 70ff404bac3..6afaada6a68 100644
--- a/gdb/p-lang.c
+++ b/gdb/p-lang.c
@@ -143,31 +143,23 @@ pascal_is_string_type (struct type *type,int *length_pos, int *length_size,
return 0;
}
-/* See p-lang.h. */
-
-void
-pascal_language::print_one_char (int c, struct ui_file *stream,
- int *in_quotes) const
+/* A callback function for generic_emit_char and generic_printstr that
+ escapes characters Pascal style. */
+
+static void
+pascal_emit_char (obstack_wide_file *stream,
+ gdb_wint_t w,
+ gdb::array_view<const gdb_byte> orig,
+ int width,
+ enum bfd_endian byte_order,
+ int quoter,
+ bool *need_escapep)
{
- if (c == '\'' || ((unsigned int) c <= 0xff && (PRINT_LITERAL_FORM (c))))
- {
- if (!(*in_quotes))
- fputs_filtered ("'", stream);
- *in_quotes = 1;
- if (c == '\'')
- {
- fputs_filtered ("''", stream);
- }
- else
- fprintf_filtered (stream, "%c", c);
- }
+ if (w == LCST ('\''))
+ fputs_filtered ("''", stream);
else
- {
- if (*in_quotes)
- fputs_filtered ("'", stream);
- *in_quotes = 0;
- fprintf_filtered (stream, "#%d", (unsigned int) c);
- }
+ default_emit_wchar (stream, w, orig, width, byte_order, quoter,
+ need_escapep);
}
/* See language.h. */
@@ -176,11 +168,7 @@ void
pascal_language::printchar (int c, struct type *type,
struct ui_file *stream) const
{
- int in_quotes = 0;
-
- print_one_char (c, stream, &in_quotes);
- if (in_quotes)
- fputs_filtered ("'", stream);
+ generic_emit_char (c, type, stream, '\'', nullptr, pascal_emit_char);
}
\f
@@ -228,94 +216,8 @@ pascal_language::printstr (struct ui_file *stream, struct type *elttype,
const char *encoding, int force_ellipses,
const struct value_print_options *options) const
{
- enum bfd_endian byte_order = type_byte_order (elttype);
- unsigned int i;
- unsigned int things_printed = 0;
- int in_quotes = 0;
- int need_comma = 0;
- int width;
-
- /* Preserve ELTTYPE's original type, just set its LENGTH. */
- check_typedef (elttype);
- width = TYPE_LENGTH (elttype);
-
- /* If the string was not truncated due to `set print elements', and
- the last byte of it is a null, we don't print that, in traditional C
- style. */
- if ((!force_ellipses) && length > 0
- && extract_unsigned_integer (string + (length - 1) * width, width,
- byte_order) == 0)
- length--;
-
- if (length == 0)
- {
- fputs_filtered ("''", stream);
- return;
- }
-
- for (i = 0; i < length && things_printed < options->print_max; ++i)
- {
- /* Position of the character we are examining
- to see whether it is repeated. */
- unsigned int rep1;
- /* Number of repetitions we have detected so far. */
- unsigned int reps;
- unsigned long int current_char;
-
- QUIT;
-
- if (need_comma)
- {
- fputs_filtered (", ", stream);
- need_comma = 0;
- }
-
- current_char = extract_unsigned_integer (string + i * width, width,
- byte_order);
-
- rep1 = i + 1;
- reps = 1;
- while (rep1 < length
- && extract_unsigned_integer (string + rep1 * width, width,
- byte_order) == current_char)
- {
- ++rep1;
- ++reps;
- }
-
- if (reps > options->repeat_count_threshold)
- {
- if (in_quotes)
- {
- fputs_filtered ("', ", stream);
- in_quotes = 0;
- }
- printchar (current_char, elttype, stream);
- fprintf_filtered (stream, " %p[<repeats %u times>%p]",
- metadata_style.style ().ptr (),
- reps, nullptr);
- i = rep1 - 1;
- things_printed += options->repeat_count_threshold;
- need_comma = 1;
- }
- else
- {
- if ((!in_quotes) && (PRINT_LITERAL_FORM (current_char)))
- {
- fputs_filtered ("'", stream);
- in_quotes = 1;
- }
- print_one_char (current_char, stream, &in_quotes);
- ++things_printed;
- }
- }
-
- /* Terminate the quotes if necessary. */
- if (in_quotes)
- fputs_filtered ("'", stream);
-
- if (force_ellipses || i < length)
- fputs_filtered ("...", stream);
+ generic_printstr (stream, elttype, string, length, encoding, force_ellipses,
+ '\'', 0, options, pascal_emit_char);
}
/* Single instance of the Pascal language class. */
diff --git a/gdb/p-lang.h b/gdb/p-lang.h
index b831bde0af6..79f8fd7c28d 100644
--- a/gdb/p-lang.h
+++ b/gdb/p-lang.h
@@ -109,18 +109,6 @@ class pascal_language : public language_defn
/* See language.h. */
- void emitchar (int ch, struct type *chtype,
- struct ui_file *stream, int quoter) const
- {
- int in_quotes = 0;
-
- print_one_char (ch, stream, &in_quotes);
- if (in_quotes)
- fputs_filtered ("'", stream);
- }
-
- /* See language.h. */
-
void printchar (int ch, struct type *chtype,
struct ui_file *stream) const override;
--
2.31.1
next prev parent reply other threads:[~2022-02-17 22:05 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-17 22:05 [PATCH v2 00/18] Refactor character printing Tom Tromey
2022-02-17 22:05 ` [PATCH v2 01/18] Fix latent quote char bug in generic_printstr Tom Tromey
2022-02-17 22:05 ` [PATCH v2 02/18] Boolify need_escape in generic_emit_char Tom Tromey
2022-02-17 22:05 ` [PATCH v2 03/18] Remove c_emit_char Tom Tromey
2022-02-17 22:05 ` [PATCH v2 04/18] Remove c_printstr Tom Tromey
2022-02-17 22:05 ` [PATCH v2 05/18] Don't use wchar_printable in print_wchar Tom Tromey
2022-02-22 15:36 ` Andrew Burgess
2022-10-10 16:39 ` Tom Tromey
2022-02-17 22:05 ` [PATCH v2 06/18] Fix a latent bug " Tom Tromey
2022-02-17 22:05 ` [PATCH v2 07/18] Remove language_defn::emitchar Tom Tromey
2022-02-17 22:05 ` [PATCH v2 08/18] Add gdb_iswcntrl Tom Tromey
2022-02-17 22:05 ` [PATCH v2 09/18] Include \0 in printable wide characters Tom Tromey
2022-02-23 13:49 ` Andrew Burgess
2022-02-23 22:28 ` Tom Tromey
2022-02-23 23:59 ` Tom Tromey
2022-02-17 22:05 ` [PATCH v2 10/18] Use a ui_file in print_wchar Tom Tromey
2022-02-17 22:05 ` [PATCH v2 11/18] Add an emitter callback to generic_printstr and generic_emit_char Tom Tromey
2022-02-17 22:05 ` [PATCH v2 12/18] Add a default encoding to generic_emit_char and generic_printstr Tom Tromey
2022-02-17 22:05 ` [PATCH v2 13/18] Change generic_emit_char to print the quotes Tom Tromey
2022-02-17 22:05 ` [PATCH v2 14/18] Use generic_emit_char in Rust Tom Tromey
2022-02-17 22:05 ` [PATCH v2 15/18] Use generic_emit_char in Ada Tom Tromey
2022-02-17 22:05 ` [PATCH v2 16/18] Use generic_emit_char in Modula-2 Tom Tromey
2022-02-23 20:17 ` Gaius Mulley
2022-03-16 12:29 ` [PATCH] Additional modula2 tests Gaius Mulley
2022-04-07 14:21 ` Tom Tromey
2022-04-09 23:16 ` Gaius Mulley
2022-04-11 19:45 ` [PATCH v1] Array access in Modula-2 Gaius Mulley
2022-02-17 22:05 ` Tom Tromey [this message]
2022-02-17 22:05 ` [PATCH v2 18/18] Simplify Fortran string printing Tom Tromey
2022-10-10 17:37 ` [PATCH v2 00/18] Refactor character printing Tom Tromey
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