13f0d3bec9* add `CLANG_C_TYPES` flag for generic C types * add `CLANG_C_KEYWORDS` flag for generic C keywords * add `CLANG_T_TYPES` flag for generic `xxx_t` types * more explicit regex testing * support for `u`, `U` and `u64` encoding prefixes * improve comment detection in diff output for js and c3 * change `get_c_identifier` API for consistency * add `is_c_identifier_start()` and `is_c_identifier_part()` * move `qe_haslower` to **util.c** * update C2 language keyword and type lists * improve Pike colorizer
287 lines
9.4 KiB
C
287 lines
9.4 KiB
C
/*
|
|
* Rust mode for QEmacs.
|
|
*
|
|
* Copyright (c) 2015-2024 Charlie Gordon.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qe.h"
|
|
#include "clang.h"
|
|
|
|
/* XXX: should handle :: */
|
|
|
|
static const char rust_keywords[] = {
|
|
/* keywords */
|
|
"_|as|box|break|const|continue|crate|else|enum|extern|"
|
|
"fn|for|if|impl|in|let|loop|match|mod|move|mut|"
|
|
"priv|proc|pub|ref|return|self|static|struct|trait|"
|
|
"type|typeof|unsafe|use|where|while|"
|
|
/* Constants */
|
|
"false|true|"
|
|
};
|
|
|
|
static const char rust_types[] = {
|
|
"bool|char|i8|i16|i32|i64|isize|u8|u16|u32|u64|usize|f32|f64|str|"
|
|
"String|PathBuf|None|Option|Result|Vec|List|Box|Cons|"
|
|
};
|
|
|
|
enum {
|
|
RUST_STYLE_DEFAULT = 0,
|
|
RUST_STYLE_PREPROCESS = QE_STYLE_PREPROCESS,
|
|
RUST_STYLE_COMMENT = QE_STYLE_COMMENT,
|
|
RUST_STYLE_REGEX = QE_STYLE_STRING_Q,
|
|
RUST_STYLE_STRING = QE_STYLE_STRING,
|
|
RUST_STYLE_STRING_Q = QE_STYLE_STRING_Q,
|
|
RUST_STYLE_NUMBER = QE_STYLE_NUMBER,
|
|
RUST_STYLE_KEYWORD = QE_STYLE_KEYWORD,
|
|
RUST_STYLE_TYPE = QE_STYLE_TYPE,
|
|
RUST_STYLE_FUNCTION = QE_STYLE_FUNCTION,
|
|
RUST_STYLE_VARIABLE = QE_STYLE_VARIABLE,
|
|
};
|
|
|
|
/* rust-mode colorization states */
|
|
enum {
|
|
IN_RUST_COMMENT = 0x01, /* multiline comment */
|
|
IN_RUST_STRING = 0x04, /* double-quoted string */
|
|
IN_RUST_STRING_Q = 0x08, /* single-quoted string */
|
|
};
|
|
|
|
static void rust_colorize_line(QEColorizeContext *cp,
|
|
const char32_t *str, int n,
|
|
QETermStyle *sbuf, ModeDef *syn)
|
|
{
|
|
int i = 0, start, i1, indent, state, style, klen;
|
|
char32_t c, delim;
|
|
char kbuf[64];
|
|
|
|
indent = cp_skip_blanks(str, 0, n);
|
|
|
|
state = cp->colorize_state;
|
|
|
|
start = i;
|
|
c = 0;
|
|
style = RUST_STYLE_DEFAULT;
|
|
|
|
if (i >= n)
|
|
goto the_end;
|
|
|
|
if (state) {
|
|
/* if already in a state, go directly in the code parsing it */
|
|
if (state & IN_RUST_COMMENT)
|
|
goto parse_comment;
|
|
if (state & IN_RUST_STRING)
|
|
goto parse_string;
|
|
if (state & IN_RUST_STRING_Q)
|
|
goto parse_string_q;
|
|
}
|
|
|
|
while (i < n) {
|
|
start = i;
|
|
c = str[i++];
|
|
switch (c) {
|
|
case '/':
|
|
if (str[i] == '*') {
|
|
/* multi-line comment */
|
|
i++;
|
|
parse_comment:
|
|
style = RUST_STYLE_COMMENT;
|
|
state |= IN_RUST_COMMENT;
|
|
for (; i < n; i++) {
|
|
if (str[i] == '*' && str[i + 1] == '/') {
|
|
i += 2;
|
|
state &= ~IN_RUST_COMMENT;
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
} else
|
|
if (str[i] == '/') {
|
|
/* line comment */
|
|
/* XXX: handle doc-comments introduced by /// or //! */
|
|
style = RUST_STYLE_COMMENT;
|
|
i = n;
|
|
break;
|
|
}
|
|
break;
|
|
case '#': /* preprocessor */
|
|
if (i == indent + 1) {
|
|
if (str[i] == '!') i++;
|
|
style = RUST_STYLE_PREPROCESS;
|
|
break;
|
|
}
|
|
break;
|
|
// case 'r': /* XXX: rust language r" regex " */
|
|
|
|
case '\'': /* character constant */
|
|
/* rust accepts quoted characters and quoted symbols */
|
|
if (i + 1 < n && (str[i] == '\\' || str[i+1] == '\''))
|
|
goto parse_string_q;
|
|
else
|
|
goto normal;
|
|
|
|
parse_string_q:
|
|
state |= IN_RUST_STRING_Q;
|
|
style = RUST_STYLE_STRING_Q;
|
|
delim = '\'';
|
|
goto string;
|
|
|
|
case '\"': /* string literal */
|
|
parse_string:
|
|
state |= IN_RUST_STRING;
|
|
style = RUST_STYLE_STRING;
|
|
delim = '\"';
|
|
string:
|
|
while (i < n) {
|
|
c = str[i++];
|
|
if (c == '\\') {
|
|
if (i >= n)
|
|
break;
|
|
i++;
|
|
} else
|
|
if (c == delim) {
|
|
state &= ~(IN_RUST_STRING | IN_RUST_STRING_Q);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
normal:
|
|
if (qe_isdigit(c)) {
|
|
int j;
|
|
// Integers:
|
|
// 0x[0-9a-fA-F_]+ //
|
|
// 0o[0-8_]+ //
|
|
// 0b[01_]+ //
|
|
// [0-9][0-9_]* //
|
|
// Floats:
|
|
// [0-9][0-9_]*\.[0-9_]*([eE][-\+]?[0-9_]+)?
|
|
// [0-9][0-9_]*(\.[0-9_]*)?[eE][-\+]?[0-9_]+
|
|
// number suffixes:
|
|
static const char * const suffixes[] = {
|
|
"i8", "i16", "i32", "i64", "u8", "u16", "u32", "u64",
|
|
"f32", "f64",
|
|
};
|
|
if (c == '0' && str[i] == 'x' && qe_isxdigit_(str[i + 1])) {
|
|
for (i += 3; qe_isxdigit_(str[i]); i++)
|
|
continue;
|
|
} else
|
|
if (c == '0' && str[i] == 'o' && qe_isoctdigit_(str[i + 1])) {
|
|
for (i += 3; qe_isoctdigit_(str[i]); i++)
|
|
continue;
|
|
} else
|
|
if (c == '0' && str[i] == 'b' && qe_isbindigit_(str[i + 1])) {
|
|
for (i += 3; qe_isbindigit_(str[i]); i++)
|
|
continue;
|
|
} else {
|
|
while (qe_isdigit_(str[i]))
|
|
i++;
|
|
if (str[i] == '.' && qe_isdigit_(str[i + 1])) {
|
|
for (i += 2; qe_isdigit_(str[i]); i++)
|
|
continue;
|
|
}
|
|
if (str[i] == 'e' || str[i] == 'E') {
|
|
j = i + 1;
|
|
if (str[j] == '+' || str[j] == '-')
|
|
j++;
|
|
if (qe_isdigit_(str[j])) {
|
|
for (i = j + 1; qe_isdigit_(str[i]); i++)
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
if (qe_isalpha(str[i])) {
|
|
for (j = 0; j < countof(suffixes); j++) {
|
|
if (ustr_match_keyword(str + i, suffixes[j], &klen)) {
|
|
i += klen;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
style = RUST_STYLE_NUMBER;
|
|
break;
|
|
}
|
|
if (qe_isword(c) || c == '$') {
|
|
/* identifiers match:
|
|
* "[a-zA-Z_\x80-\xff][a-zA-Z_0-9\x80-\xff]*"
|
|
*/
|
|
i += get_c_identifier(kbuf, countof(kbuf), c, str, i, n, CLANG_RUST);
|
|
|
|
if (str[i] == '!'
|
|
&& (str[i + 1] == '(' || strequal(kbuf, "macro_rules"))) {
|
|
/* macro definition or invokation */
|
|
i += 1;
|
|
style = RUST_STYLE_PREPROCESS;
|
|
break;
|
|
}
|
|
|
|
if (strfind(syn->keywords, kbuf)) {
|
|
style = RUST_STYLE_KEYWORD;
|
|
break;
|
|
}
|
|
|
|
if ((start == 0 || str[start - 1] != '.')
|
|
&& !qe_findchar(".(:", str[i])
|
|
&& strfind(syn->types, kbuf)) {
|
|
style = RUST_STYLE_TYPE;
|
|
break;
|
|
}
|
|
i1 = cp_skip_blanks(str, i, n);
|
|
if (str[i1] == '(') {
|
|
/* function call */
|
|
/* XXX: different styles for call and definition */
|
|
style = RUST_STYLE_FUNCTION;
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
if (style) {
|
|
SET_STYLE(sbuf, start, i, style);
|
|
style = 0;
|
|
}
|
|
}
|
|
the_end:
|
|
/* set style on eol char */
|
|
SET_STYLE1(sbuf, n, style);
|
|
|
|
cp->colorize_state = state;
|
|
}
|
|
|
|
static ModeDef rust_mode = {
|
|
.name = "Rust",
|
|
.extensions = "rs",
|
|
.shell_handlers = "rustc",
|
|
.colorize_func = rust_colorize_line,
|
|
.colorize_flags = CLANG_RUST,
|
|
.keywords = rust_keywords,
|
|
.types = rust_types,
|
|
.indent_func = c_indent_line,
|
|
.auto_indent = 1,
|
|
.fallback = &c_mode,
|
|
};
|
|
|
|
static int rust_init(QEmacsState *qs)
|
|
{
|
|
qe_register_mode(qs, &rust_mode, MODEF_SYNTAX);
|
|
return 0;
|
|
}
|
|
|
|
qe_module_init(rust_init);
|