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[src/trunk]: src/usr.bin/indent indent: extract the output state from the par...
details: https://anonhg.NetBSD.org/src/rev/46e947100fda
branches: trunk
changeset: 375903:46e947100fda
user: rillig <rillig%NetBSD.org@localhost>
date: Sat May 20 11:53:53 2023 +0000
description:
indent: extract the output state from the parser state
The parser state depends on the preprocessing lines, the output state
shouldn't.
diffstat:
usr.bin/indent/debug.c | 9 +++------
usr.bin/indent/indent.c | 10 +++++-----
usr.bin/indent/indent.h | 24 ++++++++++++++++--------
usr.bin/indent/io.c | 44 +++++++++++++++++++++-----------------------
usr.bin/indent/lexi.c | 6 +++---
usr.bin/indent/pr_comment.c | 6 +++---
6 files changed, 51 insertions(+), 48 deletions(-)
diffs (truncated from 302 to 300 lines):
diff -r aa0a6000996a -r 46e947100fda usr.bin/indent/debug.c
--- a/usr.bin/indent/debug.c Sat May 20 11:19:17 2023 +0000
+++ b/usr.bin/indent/debug.c Sat May 20 11:53:53 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: debug.c,v 1.18 2023/05/20 11:19:17 rillig Exp $ */
+/* $NetBSD: debug.c,v 1.19 2023/05/20 11:53:53 rillig Exp $ */
/*-
* Copyright (c) 2023 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: debug.c,v 1.18 2023/05/20 11:19:17 rillig Exp $");
+__RCSID("$NetBSD: debug.c,v 1.19 2023/05/20 11:53:53 rillig Exp $");
#include <stdarg.h>
@@ -117,7 +117,7 @@ const char *const paren_level_cast_name[
"(no cast)",
};
-static const char *const line_kind_name[] = {
+const char *const line_kind_name[] = {
"other",
"#if",
"#endif",
@@ -328,9 +328,6 @@ debug_parser_state(lexer_symbol lsym)
debug_ps_enum(spaced_expr_psym, psym_name);
debug_ps_int(quest_level);
- debug_ps_enum(line_kind, line_kind_name);
- debug_ps_enum(prev_line_kind, line_kind_name);
-
prev_ps = ps;
}
diff -r aa0a6000996a -r 46e947100fda usr.bin/indent/indent.c
--- a/usr.bin/indent/indent.c Sat May 20 11:19:17 2023 +0000
+++ b/usr.bin/indent/indent.c Sat May 20 11:53:53 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: indent.c,v 1.298 2023/05/20 10:46:21 rillig Exp $ */
+/* $NetBSD: indent.c,v 1.299 2023/05/20 11:53:53 rillig Exp $ */
/*-
* SPDX-License-Identifier: BSD-4-Clause
@@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: indent.c,v 1.298 2023/05/20 10:46:21 rillig Exp $");
+__RCSID("$NetBSD: indent.c,v 1.299 2023/05/20 11:53:53 rillig Exp $");
#include <sys/param.h>
#include <err.h>
@@ -751,7 +751,7 @@ process_rbrace(void)
}
if (ps.tos == 2 && code.len == 1 && code.st[0] == '}')
- ps.line_kind = lk_func_end;
+ out.line_kind = lk_func_end;
parse(psym_rbrace);
}
@@ -978,7 +978,7 @@ process_preprocessing(void)
state_stack[ifdef_level++] = ps;
else
diag(1, "#if stack overflow");
- ps.line_kind = lk_if;
+ out.line_kind = lk_if;
} else if (substring_starts_with(dir, "el")) { /* else, elif */
if (ifdef_level <= 0)
@@ -992,7 +992,7 @@ process_preprocessing(void)
diag(1, "Unmatched #endif");
else
ifdef_level--;
- ps.line_kind = lk_endif;
+ out.line_kind = lk_endif;
} else {
if (!substring_equals(dir, "pragma") &&
diff -r aa0a6000996a -r 46e947100fda usr.bin/indent/indent.h
--- a/usr.bin/indent/indent.h Sat May 20 11:19:17 2023 +0000
+++ b/usr.bin/indent/indent.h Sat May 20 11:53:53 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: indent.h,v 1.155 2023/05/20 11:19:17 rillig Exp $ */
+/* $NetBSD: indent.h,v 1.156 2023/05/20 11:53:53 rillig Exp $ */
/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
@@ -264,6 +264,9 @@ typedef struct paren_level_props {
/*
* The parser state determines the layout of the formatted text.
*
+ * At each '#if', the parser state is copied so that the corresponding '#else'
+ * lines start in the same state.
+ *
* In a function body, the number of block braces determines the indentation
* of statements and declarations.
*
@@ -394,6 +397,14 @@ extern struct parser_state {
} declaration;
bool blank_line_after_decl;
+ /* Comments */
+
+ bool curr_col_1; /* whether the current token started in column
+ * 1 of the original input */
+ bool next_col_1;
+} ps;
+
+extern struct output_state {
enum line_kind {
lk_other,
lk_if, /* #if, #ifdef, #ifndef */
@@ -405,12 +416,9 @@ extern struct parser_state {
* line; used for inserting blank lines */
enum line_kind prev_line_kind;
- /* Comments */
-
- bool curr_col_1; /* whether the current token started in column
- * 1 of the original input */
- bool next_col_1;
-} ps;
+ struct buffer indent_off_text; /* text from between 'INDENT OFF' and
+ * 'INDENT ON', both inclusive */
+} out;
#define array_length(array) (sizeof(array) / sizeof((array)[0]))
@@ -425,6 +433,7 @@ void debug_buffers(void);
extern const char *const lsym_name[];
extern const char *const psym_name[];
extern const char *const paren_level_cast_name[];
+extern const char *const line_kind_name[];
#else
#define debug_noop() do { } while (false)
#define debug_printf(fmt, ...) debug_noop()
@@ -442,7 +451,6 @@ int ind_add(int, const char *, size_t);
void inp_skip(void);
char inp_next(void);
-void clear_indent_off_text(void);
lexer_symbol lexi(void);
void diag(int, const char *, ...) __printflike(2, 3);
diff -r aa0a6000996a -r 46e947100fda usr.bin/indent/io.c
--- a/usr.bin/indent/io.c Sat May 20 11:19:17 2023 +0000
+++ b/usr.bin/indent/io.c Sat May 20 11:53:53 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: io.c,v 1.182 2023/05/20 11:19:17 rillig Exp $ */
+/* $NetBSD: io.c,v 1.183 2023/05/20 11:53:53 rillig Exp $ */
/*-
* SPDX-License-Identifier: BSD-4-Clause
@@ -38,18 +38,17 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: io.c,v 1.182 2023/05/20 11:19:17 rillig Exp $");
+__RCSID("$NetBSD: io.c,v 1.183 2023/05/20 11:53:53 rillig Exp $");
#include <stdio.h>
#include "indent.h"
struct buffer inp;
-static struct buffer indent_off_text; /* text from between 'INDENT OFF' and
- * 'INDENT ON', both inclusive */
-static unsigned wrote_newlines = 2; /* 0 in the middle of a line, 1 after
- * a single '\n', > 1 means there were
- * (n - 1) blank lines above */
+struct output_state out;
+static unsigned wrote_newlines = 2; /* 0 in the middle of a line, 1 after a
+ * single '\n', > 1 means there were (n
+ * - 1) blank lines above */
static int paren_indent;
@@ -139,19 +138,24 @@ output_indent(int old_ind, int new_ind)
static bool
want_blank_line(void)
{
+ debug_println("%s: %s -> %s", __func__,
+ line_kind_name[out.prev_line_kind], line_kind_name[out.line_kind]);
+
if (ps.blank_line_after_decl && ps.declaration == decl_no) {
ps.blank_line_after_decl = false;
return true;
}
if (opt.blanklines_around_conditional_compilation) {
- if (ps.prev_line_kind != lk_if && ps.line_kind == lk_if)
+ if (out.prev_line_kind != lk_if && out.line_kind == lk_if)
return true;
- if (ps.prev_line_kind == lk_endif && ps.line_kind != lk_endif)
+ if (out.prev_line_kind == lk_endif
+ && out.line_kind != lk_endif)
return true;
}
- if (opt.blanklines_after_procs && ps.prev_line_kind == lk_func_end)
+ if (opt.blanklines_after_procs && out.prev_line_kind == lk_func_end)
return true;
- if (opt.blanklines_before_block_comments && ps.line_kind == lk_block_comment)
+ if (opt.blanklines_before_block_comments
+ && out.line_kind == lk_block_comment)
return true;
return false;
}
@@ -274,8 +278,8 @@ output_line(void)
if (indent_enabled == indent_last_off_line) {
indent_enabled = indent_on;
- output_range(indent_off_text.st, indent_off_text.len);
- indent_off_text.len = 0;
+ output_range(out.indent_off_text.st, out.indent_off_text.len);
+ out.indent_off_text.len = 0;
}
ps.decl_on_line = ps.in_decl; /* for proper comment indentation */
@@ -298,8 +302,8 @@ output_line(void)
}
ps.want_blank = false;
- ps.prev_line_kind = ps.line_kind;
- ps.line_kind = lk_other;
+ out.prev_line_kind = out.line_kind;
+ out.line_kind = lk_other;
}
static int
@@ -361,13 +365,7 @@ void
inp_read_line(void)
{
if (indent_enabled == indent_on)
- indent_off_text.len = 0;
- buf_add_chars(&indent_off_text, inp.mem, inp.len);
+ out.indent_off_text.len = 0;
+ buf_add_chars(&out.indent_off_text, inp.mem, inp.len);
inp_read_next_line(input);
}
-
-void
-clear_indent_off_text(void)
-{
- indent_off_text.len = 0;
-}
diff -r aa0a6000996a -r 46e947100fda usr.bin/indent/lexi.c
--- a/usr.bin/indent/lexi.c Sat May 20 11:19:17 2023 +0000
+++ b/usr.bin/indent/lexi.c Sat May 20 11:53:53 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: lexi.c,v 1.201 2023/05/20 01:28:14 rillig Exp $ */
+/* $NetBSD: lexi.c,v 1.202 2023/05/20 11:53:53 rillig Exp $ */
/*-
* SPDX-License-Identifier: BSD-4-Clause
@@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: lexi.c,v 1.201 2023/05/20 01:28:14 rillig Exp $");
+__RCSID("$NetBSD: lexi.c,v 1.202 2023/05/20 11:53:53 rillig Exp $");
#include <stdlib.h>
#include <string.h>
@@ -657,7 +657,7 @@ lexi(void)
enum indent_enabled prev = indent_enabled;
lex_indent_comment();
if (prev == indent_on && indent_enabled == indent_off)
- clear_indent_off_text();
+ out.indent_off_text.len = 0;
token_add_char(*inp.st++);
lsym = lsym_comment;
next_unary = ps.next_unary;
diff -r aa0a6000996a -r 46e947100fda usr.bin/indent/pr_comment.c
--- a/usr.bin/indent/pr_comment.c Sat May 20 11:19:17 2023 +0000
+++ b/usr.bin/indent/pr_comment.c Sat May 20 11:53:53 2023 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pr_comment.c,v 1.147 2023/05/20 11:19:17 rillig Exp $ */
+/* $NetBSD: pr_comment.c,v 1.148 2023/05/20 11:53:53 rillig Exp $ */
/*-
* SPDX-License-Identifier: BSD-4-Clause
@@ -38,7 +38,7 @@
*/
#include <sys/cdefs.h>
-__RCSID("$NetBSD: pr_comment.c,v 1.147 2023/05/20 11:19:17 rillig Exp $");
+__RCSID("$NetBSD: pr_comment.c,v 1.148 2023/05/20 11:53:53 rillig Exp $");
#include <string.h>
@@ -93,7 +93,7 @@ analyze_comment(bool *p_may_wrap, bool *
delim = false;
}
if (code.len == 0 && inp.st[strspn(inp.st, "*")] == '\n')
- ps.line_kind = lk_block_comment;
+ out.line_kind = lk_block_comment;
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