1/*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1985 Sun Microsystems, Inc. 5 * Copyright (c) 1980, 1993 6 * The Regents of the University of California. All rights reserved. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37 38#define BACKSLASH '\\' 39#define bufsize 200 /* size of internal buffers */ 40#define sc_size 5000 /* size of save_com buffer */ 41#define label_offset 2 /* number of levels a label is placed to left 42 * of code */ 43 44 45#define false 0 46#define true 1 47 48 49extern FILE *input; /* the fid for the input file */ 50extern FILE *output; /* the output file */ 51 52#define CHECK_SIZE_CODE(desired_size) \ 53 if (e_code + (desired_size) >= l_code) { \ 54 int nsize = l_code-s_code + 400 + desired_size; \ 55 int code_len = e_code-s_code; \ 56 codebuf = (char *) realloc(codebuf, nsize); \ 57 if (codebuf == NULL) \ 58 err(1, NULL); \ 59 e_code = codebuf + code_len + 1; \ 60 l_code = codebuf + nsize - 5; \ 61 s_code = codebuf + 1; \ 62 } 63#define CHECK_SIZE_COM(desired_size) \ 64 if (e_com + (desired_size) >= l_com) { \ 65 int nsize = l_com-s_com + 400 + desired_size; \ 66 int com_len = e_com - s_com; \ 67 int blank_pos; \ 68 if (last_bl != NULL) \ 69 blank_pos = last_bl - combuf; \ 70 else \ 71 blank_pos = -1; \ 72 combuf = (char *) realloc(combuf, nsize); \ 73 if (combuf == NULL) \ 74 err(1, NULL); \ 75 e_com = combuf + com_len + 1; \ 76 if (blank_pos > 0) \ 77 last_bl = combuf + blank_pos; \ 78 l_com = combuf + nsize - 5; \ 79 s_com = combuf + 1; \ 80 } 81#define CHECK_SIZE_LAB(desired_size) \ 82 if (e_lab + (desired_size) >= l_lab) { \ 83 int nsize = l_lab-s_lab + 400 + desired_size; \ 84 int label_len = e_lab - s_lab; \ 85 labbuf = (char *) realloc(labbuf, nsize); \ 86 if (labbuf == NULL) \ 87 err(1, NULL); \ 88 e_lab = labbuf + label_len + 1; \ 89 l_lab = labbuf + nsize - 5; \ 90 s_lab = labbuf + 1; \ 91 } 92#define CHECK_SIZE_TOKEN(desired_size) \ 93 if (e_token + (desired_size) >= l_token) { \ 94 int nsize = l_token-s_token + 400 + desired_size; \ 95 int token_len = e_token - s_token; \ 96 tokenbuf = (char *) realloc(tokenbuf, nsize); \ 97 if (tokenbuf == NULL) \ 98 err(1, NULL); \ 99 e_token = tokenbuf + token_len + 1; \ 100 l_token = tokenbuf + nsize - 5; \ 101 s_token = tokenbuf + 1; \ 102 } 103 104extern char *labbuf; /* buffer for label */ 105extern char *s_lab; /* start ... */ 106extern char *e_lab; /* .. and end of stored label */ 107extern char *l_lab; /* limit of label buffer */ 108 109extern char *codebuf; /* buffer for code section */ 110extern char *s_code; /* start ... */ 111extern char *e_code; /* .. and end of stored code */ 112extern char *l_code; /* limit of code section */ 113 114extern char *combuf; /* buffer for comments */ 115extern char *s_com; /* start ... */ 116extern char *e_com; /* ... and end of stored comments */ 117extern char *l_com; /* limit of comment buffer */ 118 119#define token s_token 120extern char *tokenbuf; /* the last token scanned */ 121extern char *s_token; 122extern char *e_token; 123extern char *l_token; 124 125extern char *in_buffer; /* input buffer */ 126extern char *in_buffer_limit; /* the end of the input buffer */ 127extern char *buf_ptr; /* ptr to next character to be taken 128 * from in_buffer */ 129extern char *buf_end; /* ptr to first after last char in 130 * in_buffer */ 131 132extern char sc_buf[sc_size]; /* input text is saved here when looking 133 * for the brace after an if, while, etc */ 134extern char *save_com; /* start of the comment stored in 135 * sc_buf */ 136extern char *sc_end; /* pointer into save_com buffer */ 137 138extern char *bp_save; /* saved value of buf_ptr when taking 139 * input from save_com */ 140extern char *be_save; /* similarly saved value of buf_end */ 141 142 143struct options { 144 int blanklines_around_conditional_compilation; 145 int blanklines_after_declarations_at_proctop; /* this is vaguely 146 * similar to blanklines_after_decla except 147 * that in only applies to the first set of 148 * declarations in a procedure (just after 149 * the first '{') and it causes a blank line 150 * to be generated even if there are no 151 * declarations */ 152 int blanklines_after_declarations; 153 int blanklines_after_procs; 154 int blanklines_before_blockcomments; 155 int leave_comma; /* if true, never break declarations after 156 * commas */ 157 int btype_2; /* when true, brace should be on same line 158 * as if, while, etc */ 159 int Bill_Shannon; /* true iff a blank should always be 160 * inserted after sizeof */ 161 int comment_delimiter_on_blankline; 162 int decl_com_ind; /* the column in which comments after 163 * declarations should be put */ 164 int cuddle_else; /* true if else should cuddle up to '}' */ 165 int continuation_indent; /* set to the indentation between the 166 * edge of code and continuation lines */ 167 float case_indent; /* The distance to indent case labels from the 168 * switch statement */ 169 int com_ind; /* the column in which comments to the right 170 * of code should start */ 171 int decl_indent; /* column to indent declared identifiers to */ 172 int ljust_decl; /* true if declarations should be left 173 * justified */ 174 int unindent_displace; /* comments not to the right of code 175 * will be placed this many 176 * indentation levels to the left of 177 * code */ 178 int extra_expression_indent; /* true if continuation lines from 179 * the expression part of "if(e)", 180 * "while(e)", "for(e;e;e)" should be 181 * indented an extra tab stop so that they 182 * don't conflict with the code that follows */ 183 int else_if; /* True iff else if pairs should be handled 184 * specially */ 185 int function_brace_split; /* split function declaration and 186 * brace onto separate lines */ 187 int format_col1_comments; /* If comments which start in column 1 188 * are to be magically reformatted (just 189 * like comments that begin in later columns) */ 190 int format_block_comments; /* true if comments beginning with 191 * `/ * \n' are to be reformatted */ 192 int indent_parameters; 193 int ind_size; /* the size of one indentation level */ 194 int block_comment_max_col; 195 int local_decl_indent; /* like decl_indent but for locals */ 196 int lineup_to_parens_always; /* if true, do not attempt to keep 197 * lined-up code within the margin */ 198 int lineup_to_parens; /* if true, continued code within parens 199 * will be lined up to the open paren */ 200 int pointer_as_binop; /* if true, the pointer dereference operator 201 * will be treated as a binary operator */ 202 int proc_calls_space; /* If true, procedure calls look like: 203 * foo (bar) rather than foo(bar) */ 204 int procnames_start_line; /* if true, the names of procedures 205 * being defined get placed in column 1 (ie. 206 * a newline is placed between the type of 207 * the procedure and its name) */ 208 int space_after_cast; /* "b = (int) a" vs "b = (int)a" */ 209 int star_comment_cont; /* true iff comment continuation lines 210 * should have stars at the beginning of 211 * each line. */ 212 int swallow_optional_blanklines; 213 int auto_typedefs; /* set true to recognize identifiers 214 * ending in "_t" like typedefs */ 215 int tabsize; /* the size of a tab */ 216 int max_col; /* the maximum allowable line length */ 217 int use_tabs; /* set true to use tabs for spacing, false 218 * uses all spaces */ 219 int verbose; /* when true, non-essential error messages 220 * are printed */ 221}; 222extern struct options opt; 223 224extern int found_err; 225extern int n_real_blanklines; 226extern int prefix_blankline_requested; 227extern int postfix_blankline_requested; 228extern int break_comma; /* when true and not in parens, break after a 229 * comma */ 230extern float case_ind; /* indentation level to be used for a "case 231 * n:" */ 232extern int code_lines; /* count of lines with code */ 233extern int had_eof; /* set to true when input is exhausted */ 234extern int line_no; /* the current line number. */ 235extern int inhibit_formatting; /* true if INDENT OFF is in effect */ 236extern int suppress_blanklines;/* set iff following blanklines should be 237 * suppressed */ 238 239#define STACKSIZE 256 240 241struct parser_state { 242 int last_token; 243 int p_stack[STACKSIZE]; /* this is the parsers stack */ 244 int il[STACKSIZE]; /* this stack stores indentation levels */ 245 float cstk[STACKSIZE];/* used to store case stmt indentation levels */ 246 int box_com; /* set to true when we are in a "boxed" 247 * comment. In that case, the first non-blank 248 * char should be lined up with the / in / followed by * */ 249 int comment_delta; /* used to set up indentation for all lines 250 * of a boxed comment after the first one */ 251 int n_comment_delta;/* remembers how many columns there were 252 * before the start of a box comment so that 253 * forthcoming lines of the comment are 254 * indented properly */ 255 int cast_mask; /* indicates which close parens potentially 256 * close off casts */ 257 int not_cast_mask; /* indicates which close parens definitely 258 * close off something else than casts */ 259 int block_init; /* true iff inside a block initialization */ 260 int block_init_level; /* The level of brace nesting in an 261 * initialization */ 262 int last_nl; /* this is true if the last thing scanned was 263 * a newline */ 264 int in_or_st; /* Will be true iff there has been a 265 * declarator (e.g. int or char) and no left 266 * paren since the last semicolon. When true, 267 * a '{' is starting a structure definition or 268 * an initialization list */ 269 int bl_line; /* set to 1 by dump_line if the line is blank */ 270 int col_1; /* set to true if the last token started in 271 * column 1 */ 272 int com_col; /* this is the column in which the current 273 * comment should start */ 274 int com_lines; /* the number of lines with comments, set by 275 * dump_line */ 276 int dec_nest; /* current nesting level for structure or init */ 277 int decl_on_line; /* set to true if this line of code has part 278 * of a declaration on it */ 279 int i_l_follow; /* the level to which ind_level should be set 280 * after the current line is printed */ 281 int in_decl; /* set to true when we are in a declaration 282 * stmt. The processing of braces is then 283 * slightly different */ 284 int in_stmt; /* set to 1 while in a stmt */ 285 int ind_level; /* the current indentation level */ 286 int ind_stmt; /* set to 1 if next line should have an extra 287 * indentation level because we are in the 288 * middle of a stmt */ 289 int last_u_d; /* set to true after scanning a token which 290 * forces a following operator to be unary */ 291 int out_coms; /* the number of comments processed, set by 292 * pr_comment */ 293 int out_lines; /* the number of lines written, set by 294 * dump_line */ 295 int p_l_follow; /* used to remember how to indent following 296 * statement */ 297 int paren_level; /* parenthesization level. used to indent 298 * within statements */ 299 short paren_indents[20]; /* column positions of each paren */ 300 int pcase; /* set to 1 if the current line label is a 301 * case. It is printed differently from a 302 * regular label */ 303 int search_brace; /* set to true by parse when it is necessary 304 * to buffer up all info up to the start of a 305 * stmt after an if, while, etc */ 306 int use_ff; /* set to one if the current line should be 307 * terminated with a form feed */ 308 int want_blank; /* set to true when the following token should 309 * be prefixed by a blank. (Said prefixing is 310 * ignored in some cases.) */ 311 int keyword; /* the type of a keyword or 0 */ 312 int dumped_decl_indent; 313 int in_parameter_declaration; 314 int tos; /* pointer to top of stack */ 315 char procname[100]; /* The name of the current procedure */ 316 int just_saw_decl; 317}; 318 319extern struct parser_state ps; 320 321extern int ifdef_level; 322extern struct parser_state state_stack[5]; 323extern struct parser_state match_state[5]; 324