bydgoszczscript

simple, fast and efficient programming language
git clone git://git.kocotian.pl/bydgoszczscript.git
Log | Files | Refs | README | LICENSE

commit 9dadeea516058a663fe91dc3530dd1d8f9d19469
Author: kocotian <kocotian@kocotian.pl>
Date:   Wed, 26 May 2021 13:25:33 +0200

Initial commit

Diffstat:
ALICENSE | 674+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
AMakefile | 26++++++++++++++++++++++++++
AREADME | 10++++++++++
Absc.c | 118+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Acompile.c | 55+++++++++++++++++++++++++++++++++++++++++++++++++++++++
Aconfig.h | 5+++++
Aerrwarn.c | 81+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Ainclude/arg.h | 50++++++++++++++++++++++++++++++++++++++++++++++++++
Ainclude/compile.h | 31+++++++++++++++++++++++++++++++
Ainclude/errwarn.h | 28++++++++++++++++++++++++++++
Ainclude/str.h | 34++++++++++++++++++++++++++++++++++
Ainclude/token.h | 53+++++++++++++++++++++++++++++++++++++++++++++++++++++
Ainclude/util.h | 19+++++++++++++++++++
Alicenses/LIBSL | 25+++++++++++++++++++++++++
Asamples/fibbonaci.bs | 22++++++++++++++++++++++
Asamples/witajswiat.bs | 6++++++
Astr.c | 38++++++++++++++++++++++++++++++++++++++
Atoken.c | 86+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Autil.c | 36++++++++++++++++++++++++++++++++++++
19 files changed, 1397 insertions(+), 0 deletions(-)

diff --git a/LICENSE b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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If not, see <http://www.gnu.org/licenses/>. + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + <program> Copyright (C) <year> <name of author> + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +<http://www.gnu.org/licenses/>. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +<http://www.gnu.org/philosophy/why-not-lgpl.html>. diff --git a/Makefile b/Makefile @@ -0,0 +1,26 @@ +# bydgoszczscript - simple, fast and efficient programming language +# Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +all: bsc + +bsc: bsc.c util.c str.c compile.c token.c errwarn.c + ${CC} -std=c99 -pedantic -Wall -Wextra -Wconversion -Iinclude -o $@ $^ + +clean: + rm -f bsc + +.PHONY: all clean diff --git a/README b/README @@ -0,0 +1,10 @@ +bydgoszczscript +=============== + +bydgoszczscript is a simple, fast and efficient programming language. + +building: + $ make + +samples: + $ ls samples diff --git a/bsc.c b/bsc.c @@ -0,0 +1,118 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#include <fcntl.h> +#include <stdio.h> +#include <string.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +#include <arg.h> +#include <str.h> +#include <util.h> + +#include <compile.h> + +/* function prototypes */ +static ssize_t readfile(const char *filename, char *data, size_t len); +static void usage(void); + +/* global variables */ +char *argv0; +#include "config.h" + +/* function declarations */ +static ssize_t +readfile(const char *filename, char *data, size_t len) +{ + int fd; + ssize_t rb; + + if ((fd = open(filename, O_RDONLY)) < 0) + return (ssize_t)fd; + if ((rb = read(fd, data, len)) < 0) + return rb; + if ((fd = close(fd)) < 0) + return fd; + return rb; +} + +static void +usage(void) +{ + die("usage: %s [-h]", argv0); +} + +/* main */ +int +main(int argc, char *argv[]) +{ + int i; + char data[640 * 1024]; + ssize_t rb; + File f; + + ARGBEGIN { + /* fallthrough */ + case 'h': default: + usage(); + break; + } ARGEND + + if (!argc) { +#if STDIN_IF_NO_ARGS + f.line = 0; + strncpy(f.filename, "<stdin>", PATH_MAX); + while ((rb = read(STDIN_FILENO, data, LEN(data))) > 1) { + ++(f.line); + f.content.data = data; f.content.len = (unsigned)rb; + f.pos = 0; + f.curtok.type = TokenNULL; + f.curtok.c.data = data; + f.curtok.c.len = 0; + f.curline.data = data; + f.curline.len = (size_t)(strchr(data, '\n') - data); + f.outfd = STDOUT_FILENO; + compile(f); + } +#else + usage(); +#endif + } else for (i = 0; i < argc; ++i) { + if ((rb = readfile(argv[i], data, LEN(data))) < 0) + die("readfile:"); + f.content.data = data; f.content.len = (unsigned)rb; + f.pos = 0; + f.line = 1; + strncpy(f.filename, argv[i], PATH_MAX); + f.curtok.type = TokenNULL; + f.curtok.c.data = data; + f.curtok.c.len = 0; + f.curline.data = data; + f.curline.len = (size_t)(strchr(data, '\n') - data); + f.outfd = STDOUT_FILENO; + compile(f); + } +} + +/* +** vim: number relativenumber ts=4 sw=4 +*/ diff --git a/compile.c b/compile.c @@ -0,0 +1,55 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#define _XOPEN_SOURCE 700 +#define _POSIX_C_SOURCE 200809L + +#include <compile.h> +#include <stddef.h> +#include <stdio.h> + +#include <errwarn.h> +#include <str.h> + +static Token *enextToken(File *f); + +static Token * +enextToken(File *f) +{ + Token *r; + if ((r = nextToken(f)) == NULL) + errwarn(*f, 1, "unexpected end of input"); + return r; +} + +void +compile(File f) +{ + Token *t; + while ((t = nextToken(&f)) != NULL) { + if (!(Strccmp(t->c, "wykorzystaj"))) { + t = enextToken(&f); + dprintf(f.outfd, "#include <%.*s.h>\n", + (int)t->c.len, t->c.data); + } else { + errwarn(f, 1, "unexpected token"); + } + } +} diff --git a/config.h b/config.h @@ -0,0 +1,5 @@ +/* use colored errors and warnings */ +#define COLOR 1 + +/* if no arguments given, use standard input mode */ +#define STDIN_IF_NO_ARGS 1 diff --git a/errwarn.c b/errwarn.c @@ -0,0 +1,81 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#include <errwarn.h> + +#include <stdio.h> +#include <stdlib.h> +#include <stdarg.h> + +#include "config.h" + +void +errwarn(File f, int isError, const char *fmt, ...) +{ + va_list ap; + ssize_t i; + + fprintf(stderr, +#if COLOR + "\033[0;1m" +#endif + "%s:%d:%ld: " +#if COLOR + "\033[1;3%cm" +#endif + "%s: " +#if COLOR + "\033[0m" +#endif + , + f.filename, f.line, (f.curtok.c.data - f.curline.data) + 1, +#if COLOR + isError ? '1' : '3', +#endif + isError ? "error" : "warning"); + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + + fprintf(stderr, "\n % 4d | %.*s\n | ", + f.line, (int)f.curline.len, f.curline.data); + + for (i = 0; i < f.curtok.c.data - f.curline.data; ++i) { + fprintf(stderr, " "); + } + + fprintf(stderr, +#if COLOR + "\033[1;3%cm" +#endif + "^~~~~" +#if COLOR + "\033[0m" +#endif + "\n" +#if COLOR + , isError ? '1' : '3' +#endif + ); + + if (isError) + exit(1); +} diff --git a/include/arg.h b/include/arg.h @@ -0,0 +1,50 @@ +/* See licenses/LIBSL file for copyright and license details. */ +/* + * Copy me if you can. + * by 20h + */ + +#ifndef ARG_H__ +#define ARG_H__ + +extern char *argv0; + +/* use main(int argc, char *argv[]) */ +#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ + argv[0] && argv[0][0] == '-'\ + && argv[0][1];\ + argc--, argv++) {\ + char argc_;\ + char **argv_;\ + int brk_;\ + if (argv[0][1] == '-' && argv[0][2] == '\0') {\ + argv++;\ + argc--;\ + break;\ + }\ + for (brk_ = 0, argv[0]++, argv_ = argv;\ + argv[0][0] && !brk_;\ + argv[0]++) {\ + if (argv_ != argv)\ + break;\ + argc_ = argv[0][0];\ + switch (argc_) + +#define ARGEND }\ + } + +#define ARGC() argc_ + +#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\ + ((x), abort(), (char *)0) :\ + (brk_ = 1, (argv[0][1] != '\0')?\ + (&argv[0][1]) :\ + (argc--, argv++, argv[0]))) + +#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\ + (char *)0 :\ + (brk_ = 1, (argv[0][1] != '\0')?\ + (&argv[0][1]) :\ + (argc--, argv++, argv[0]))) + +#endif diff --git a/include/compile.h b/include/compile.h @@ -0,0 +1,31 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#ifndef _COMPILE_H +#define _COMPILE_H + +#include <linux/limits.h> +#include <sys/types.h> + +#include <token.h> + +void compile(File f); + +#endif diff --git a/include/errwarn.h b/include/errwarn.h @@ -0,0 +1,28 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#ifndef _ERRWARN_H +#define _ERRWARN_H + +#include <token.h> + +void errwarn(File f, int isError, const char *fmt, ...); + +#endif diff --git a/include/str.h b/include/str.h @@ -0,0 +1,34 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#ifndef _STR_H +#define _STR_H + +#include <sys/types.h> + +typedef struct String { + char *data; + size_t len; +} String; + +int Strcmp(String s1, String s2); +int Strccmp(const String s, const char *cs); + +#endif diff --git a/include/token.h b/include/token.h @@ -0,0 +1,53 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#ifndef _TOKEN_H +#define _TOKEN_H + +#include <linux/limits.h> +#include <sys/types.h> + +#include <str.h> + +typedef enum { + TokenNULL, + TokenIdentifier, TokenNumber, TokenString, + TokenOpeningParenthesis, TokenClosingParenthesis, + TokenColon, TokenSemicolon, +} TokenType; + +typedef struct Token { + TokenType type; + String c; +} Token; + +typedef struct File { + String content; + char filename[PATH_MAX]; + size_t pos; + int line; + Token curtok; + String curline; + int outfd; +} File; + +Token *nextToken(File *f); + +#endif diff --git a/include/util.h b/include/util.h @@ -0,0 +1,19 @@ +/* See licenses/LIBSL file for copyright and license details. */ + +#ifndef _UTIL_H +#define _UTIL_H + +#define MAX(A, B) ((signed)(A) > (signed)(B) ? (signed)(A) : (signed)(B)) +#define MIN(A, B) ((signed)(A) < (signed)(B) ? (signed)(A) : (signed)(B)) +#define BETWEEN(X, A, B) ((signed)(A) <= (signed)(X) && (signed)(X) <= (signed)(B)) + +#define UMAX(A, B) ((unsigned)(A) > (unsigned)(B) ? (unsigned)(A) : (unsigned)(B)) +#define UMIN(A, B) ((unsigned)(A) < (unsigned)(B) ? (unsigned)(A) : (unsigned)(B)) +#define UBETWEEN(X, A, B) ((unsigned)(A) <= (unsigned)(X) && (unsigned)(X) <= (unsigned)(B)) + +#define LEN(X) (sizeof (X) / sizeof (*X)) + +void die(const char *fmt, ...); +void *ecalloc(size_t nmemb, size_t size); + +#endif diff --git a/licenses/LIBSL b/licenses/LIBSL @@ -0,0 +1,25 @@ +MIT/X Consortium License + +© 2013-2019 Anselm R Garbe <anselm@garbe.ca> +© 2015-2019 Hiltjo Posthuma <hiltjo@codemadness.org> +© 2016 Markus Teich <markus.teich@stusta.mhn.de> +© 2015 Eric Pruitt <eric.pruitt@gmail.com> +© 2021 Kacper Kocot <kocotian@kocotian.pl> + +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. diff --git a/samples/fibbonaci.bs b/samples/fibbonaci.bs @@ -0,0 +1,22 @@ +wykorzystaj stdio + +poczatek miasta bonifacy przyjmuje (n przechowuje cyferki) oddaje cyferki + jesli n jest rowne 0 albo n jest rowne 1 wtedy + oddaj n; + inaczej + oddaj ( + (zadzwon miasto bonifacy daj (n - 1)) + plus + (zadzwon miasto bonifacy daj (n - 2)) + ); + dosc +koniec miasta + +poczatek miasta bydgoszcz przyjmuje (argc przechowuje cyferki, wskaznik argv przechowuje literki) oddaje cyferki + zadzwon miasto puts daj ("ciag bonifacego :)"); + obywatel i przechowuje cyferki; + dla ustaw 0 dla i; i jest mniejsze niz 32; powieksz i: + zadzwon miasto bonifacy daj (i); + koniec dla + oddaj 0; +koniec miasta bygdoszcz diff --git a/samples/witajswiat.bs b/samples/witajswiat.bs @@ -0,0 +1,6 @@ +wykorzystaj stdio + +poczatek miasta bydgoszcz: + zadzwon miasto printf daj ("Hello, world!"); + oddaj 0; +koniec miasta diff --git a/str.c b/str.c @@ -0,0 +1,38 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#include <str.h> +#include <string.h> + +int +Strcmp(const String s1, const String s2) +{ + if (s1.len != s2.len) + return (int)(s1.len - s2.len); + return strncmp(s1.data, s2.data, s1.len); +} + +int +Strccmp(const String s, const char *cs) +{ + if (s.len != strlen(cs)) + return (int)(s.len - strlen(cs)); + return strncmp(s.data, cs, s.len); +} diff --git a/token.c b/token.c @@ -0,0 +1,86 @@ +/* + bydgoszczscript - simple, fast and efficient programming language + Copyright (C) 2021 Kacper Kocot <kocotian@kocotian.pl> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + +*/ + +#include <token.h> + +#include <ctype.h> +#include <stddef.h> +#include <string.h> + +#include <errwarn.h> +#include <util.h> + +Token * +nextToken(File *f) +#define CURCHAR (f->content.data[f->pos]) +#define i (f->pos) +#define NOT_OVERFLOW (i < f->content.len) +#define TYPE(T) (f->curtok.type = T) +{ + size_t initpos; + f->curtok.c.data += f->curtok.c.len; + f->curtok.c.len = 0; + f->curtok.type = TokenNULL; + while (isspace(CURCHAR) && NOT_OVERFLOW) { + if (CURCHAR == '\n') { + ++(f->line); + f->curline.data = &CURCHAR + 1; + f->curline.len = (size_t)(strchr(f->curline.data, '\n') - f->curline.data); + } + ++(f->curtok.c.data), ++i; + } + initpos = i; + if (!NOT_OVERFLOW) + return NULL; + /* Identifier */ + else if ((CURCHAR >= 'a' && CURCHAR <= 'z') + || (CURCHAR >= 'A' && CURCHAR <= 'Z')) { + TYPE(TokenIdentifier); + ++i; + while (((CURCHAR >= 'a' && CURCHAR <= 'z') + || (CURCHAR >= 'A' && CURCHAR <= 'Z') + || (CURCHAR >= '0' && CURCHAR <= '9')) + && NOT_OVERFLOW) ++i; + } + /* Number */ + else if (CURCHAR >= '0' && CURCHAR <= '9') { + TYPE(TokenNumber); + ++i; + while ((CURCHAR >= '0' && CURCHAR <= '9') + && NOT_OVERFLOW) ++i; + } + /* String */ + else if ((CURCHAR == '"')) { + TYPE(TokenString); + ++i; + while (CURCHAR != '"' && NOT_OVERFLOW) ++i; + ++i; + } + /* Other unexpected token */ + else { + errwarn(*f, 1, "unexpected token: '%c'", CURCHAR); + } + f->curtok.c.len = i - initpos; + return &(f->curtok); +} +#undef TYPE +#undef NOT_OVERFLOW +#undef i +#undef CURCHAR diff --git a/util.c b/util.c @@ -0,0 +1,36 @@ +/* See licenses/LIBSL file for copyright and license details. */ +#include <stdarg.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "util.h" + +void * +ecalloc(size_t nmemb, size_t size) +{ + void *p; + + if (!(p = calloc(nmemb, size))) + die("calloc:"); + return p; +} + +void +die(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + + if (fmt[0] && fmt[strlen(fmt) - 1] == ':') { + fputc(' ', stderr); + perror(NULL); + } else { + fputc('\n', stderr); + } + + exit(1); +}