usr.bin/indent/indent_globs.h

   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  *      @(#)indent_globs.h      8.1 (Berkeley) 6/6/93
  38  * $FreeBSD: head/usr.bin/indent/indent_globs.h 337651 2018-08-11 19:20:06Z pstef $
  39  */
  40
  41 #define BACKSLASH '\\'
  42 #define bufsize 200             /* size of internal buffers */
  43 #define sc_size 5000            /* size of save_com buffer */
  44 #define label_offset 2          /* number of levels a label is placed to left
  45                                  * of code */
  46
  47
  48 #define false 0
  49 #define true  1
  50
  51
  52 extern FILE       *input;               /* the fid for the input file */
  53 extern FILE       *output;              /* the output file */
  54
  55 #define CHECK_SIZE_CODE(desired_size) \
  56         if (e_code + (desired_size) >= l_code) { \
  57             int nsize = l_code-s_code + 400 + desired_size; \
  58             int code_len = e_code-s_code; \
  59             codebuf = (char *) realloc(codebuf, nsize); \
  60             if (codebuf == NULL) \
  61                 err(1, NULL); \
  62             e_code = codebuf + code_len + 1; \
  63             l_code = codebuf + nsize - 5; \
  64             s_code = codebuf + 1; \
  65         }
  66 #define CHECK_SIZE_COM(desired_size) \
  67         if (e_com + (desired_size) >= l_com) { \
  68             int nsize = l_com-s_com + 400 + desired_size; \
  69             int com_len = e_com - s_com; \
  70             int blank_pos; \
  71             if (last_bl != NULL) \
  72                 blank_pos = last_bl - combuf; \
  73             else \
  74                 blank_pos = -1; \
  75             combuf = (char *) realloc(combuf, nsize); \
  76             if (combuf == NULL) \
  77                 err(1, NULL); \
  78             e_com = combuf + com_len + 1; \
  79             if (blank_pos > 0) \
  80                 last_bl = combuf + blank_pos; \
  81             l_com = combuf + nsize - 5; \
  82             s_com = combuf + 1; \
  83         }
  84 #define CHECK_SIZE_LAB(desired_size) \
  85         if (e_lab + (desired_size) >= l_lab) { \
  86             int nsize = l_lab-s_lab + 400 + desired_size; \
  87             int label_len = e_lab - s_lab; \
  88             labbuf = (char *) realloc(labbuf, nsize); \
  89             if (labbuf == NULL) \
  90                 err(1, NULL); \
  91             e_lab = labbuf + label_len + 1; \
  92             l_lab = labbuf + nsize - 5; \
  93             s_lab = labbuf + 1; \
  94         }
  95 #define CHECK_SIZE_TOKEN(desired_size) \
  96         if (e_token + (desired_size) >= l_token) { \
  97             int nsize = l_token-s_token + 400 + desired_size; \
  98             int token_len = e_token - s_token; \
  99             tokenbuf = (char *) realloc(tokenbuf, nsize); \
 100             if (tokenbuf == NULL) \
 101                 err(1, NULL); \
 102             e_token = tokenbuf + token_len + 1; \
 103             l_token = tokenbuf + nsize - 5; \
 104             s_token = tokenbuf + 1; \
 105         }
 106
 107 extern char       *labbuf;              /* buffer for label */
 108 extern char       *s_lab;               /* start ... */
 109 extern char       *e_lab;               /* .. and end of stored label */
 110 extern char       *l_lab;               /* limit of label buffer */
 111
 112 extern char       *codebuf;             /* buffer for code section */
 113 extern char       *s_code;              /* start ... */
 114 extern char       *e_code;              /* .. and end of stored code */
 115 extern char       *l_code;              /* limit of code section */
 116
 117 extern char       *combuf;              /* buffer for comments */
 118 extern char       *s_com;               /* start ... */
 119 extern char       *e_com;               /* ... and end of stored comments */
 120 extern char       *l_com;               /* limit of comment buffer */
 121
 122 #define token s_token
 123 extern char       *tokenbuf;            /* the last token scanned */
 124 extern char       *s_token;
 125 extern char       *e_token;
 126 extern char       *l_token;
 127
 128 extern char       *in_buffer;           /* input buffer */
 129 extern char       *in_buffer_limit;     /* the end of the input buffer */
 130 extern char       *buf_ptr;             /* ptr to next character to be taken
 131                                  * from in_buffer */
 132 extern char       *buf_end;             /* ptr to first after last char in
 133                                 * in_buffer */
 134
 135 extern char        sc_buf[sc_size];     /* input text is saved here when looking
 136                                  * for the brace after an if, while, etc */
 137 extern char       *save_com;            /* start of the comment stored in
 138                                  * sc_buf */
 139 extern char       *sc_end;              /* pointer into save_com buffer */
 140
 141 extern char       *bp_save;             /* saved value of buf_ptr when taking
 142                                  * input from save_com */
 143 extern char       *be_save;             /* similarly saved value of buf_end */
 144
 145
 146 struct options {
 147     int         blanklines_around_conditional_compilation;
 148     int         blanklines_after_declarations_at_proctop; /* this is vaguely
 149                                  * similar to blanklines_after_decla except
 150                                  * that in only applies to the first set of
 151                                  * declarations in a procedure (just after
 152                                  * the first '{') and it causes a blank line
 153                                  * to be generated even if there are no
 154                                  * declarations */
 155     int         blanklines_after_declarations;
 156     int         blanklines_after_procs;
 157     int         blanklines_before_blockcomments;
 158     int         leave_comma;    /* if true, never break declarations after
 159                                  * commas */
 160     int         btype_2;        /* when true, brace should be on same line
 161                                  * as if, while, etc */
 162     int         Bill_Shannon;   /* true iff a blank should always be
 163                                  * inserted after sizeof */
 164     int         comment_delimiter_on_blankline;
 165     int         decl_com_ind;   /* the column in which comments after
 166                                  * declarations should be put */
 167     int         cuddle_else;    /* true if else should cuddle up to '}' */
 168     int         continuation_indent; /* set to the indentation between the
 169                                  * edge of code and continuation lines */
 170     float       case_indent;    /* The distance to indent case labels from the
 171                                  * switch statement */
 172     int         com_ind;        /* the column in which comments to the right
 173                                  * of code should start */
 174     int         decl_indent;    /* column to indent declared identifiers to */
 175     int         ljust_decl;     /* true if declarations should be left
 176                                  * justified */
 177     int         unindent_displace; /* comments not to the right of code
 178                                  * will be placed this many
 179                                  * indentation levels to the left of
 180                                  * code */
 181     int         extra_expression_indent; /* true if continuation lines from
 182                                  * the expression part of "if(e)",
 183                                  * "while(e)", "for(e;e;e)" should be
 184                                  * indented an extra tab stop so that they
 185                                  * don't conflict with the code that follows */
 186     int         else_if;        /* True iff else if pairs should be handled
 187                                  * specially */
 188     int         function_brace_split; /* split function declaration and
 189                                  * brace onto separate lines */
 190     int         format_col1_comments; /* If comments which start in column 1
 191                                  * are to be magically reformatted (just
 192                                  * like comments that begin in later columns) */
 193     int         format_block_comments; /* true if comments beginning with
 194                                  * `/ * \n' are to be reformatted */
 195     int         indent_parameters;
 196     int         ind_size;       /* the size of one indentation level */
 197     int         block_comment_max_col;
 198     int         local_decl_indent; /* like decl_indent but for locals */
 199     int         lineup_to_parens_always; /* if true, do not attempt to keep
 200                                  * lined-up code within the margin */
 201     int         lineup_to_parens; /* if true, continued code within parens
 202                                  * will be lined up to the open paren */
 203     int         proc_calls_space; /* If true, procedure calls look like:
 204                                  * foo (bar) rather than foo(bar) */
 205     int         procnames_start_line; /* if true, the names of procedures
 206                                  * being defined get placed in column 1 (ie.
 207                                  * a newline is placed between the type of
 208                                  * the procedure and its name) */
 209     int         space_after_cast; /* "b = (int) a" vs "b = (int)a" */
 210     int         star_comment_cont; /* true iff comment continuation lines
 211                                  * should have stars at the beginning of
 212                                  * each line. */
 213     int         swallow_optional_blanklines;
 214     int         auto_typedefs;  /* set true to recognize identifiers
 215                                  * ending in "_t" like typedefs */
 216     int         tabsize;        /* the size of a tab */
 217     int         max_col;        /* the maximum allowable line length */
 218     int         use_tabs;       /* set true to use tabs for spacing, false
 219                                  * uses all spaces */
 220     int         verbose;        /* when true, non-essential error messages
 221                                  * are printed */
 222 };
 223 extern struct options opt;
 224
 225 extern int         found_err;
 226 extern int         n_real_blanklines;
 227 extern int         prefix_blankline_requested;
 228 extern int         postfix_blankline_requested;
 229 extern int         break_comma; /* when true and not in parens, break after a
 230                                  * comma */
 231 extern float       case_ind;    /* indentation level to be used for a "case
 232                                  * n:" */
 233 extern int         code_lines;  /* count of lines with code */
 234 extern int         had_eof;     /* set to true when input is exhausted */
 235 extern int         line_no;     /* the current line number. */
 236 extern int         inhibit_formatting;  /* true if INDENT OFF is in effect */
 237 extern int         suppress_blanklines;/* set iff following blanklines should be
 238                                  * suppressed */
 239
 240 #define STACKSIZE 256
 241
 242 struct parser_state {
 243     int         last_token;
 244     int         p_stack[STACKSIZE];     /* this is the parsers stack */
 245     int         il[STACKSIZE];  /* this stack stores indentation levels */
 246     float       cstk[STACKSIZE];/* used to store case stmt indentation levels */
 247     int         box_com;        /* set to true when we are in a "boxed"
 248                                  * comment. In that case, the first non-blank
 249                                  * char should be lined up with the / in / followed by * */
 250     int         comment_delta;  /* used to set up indentation for all lines
 251                                  * of a boxed comment after the first one */
 252     int         n_comment_delta;/* remembers how many columns there were
 253                                  * before the start of a box comment so that
 254                                  * forthcoming lines of the comment are
 255                                  * indented properly */
 256     int         cast_mask;      /* indicates which close parens potentially
 257                                  * close off casts */
 258     int         not_cast_mask;  /* indicates which close parens definitely
 259                                  * close off something else than casts */
 260     int         block_init;     /* true iff inside a block initialization */
 261     int         block_init_level;       /* The level of brace nesting in an
 262                                          * initialization */
 263     int         last_nl;        /* this is true if the last thing scanned was
 264                                  * a newline */
 265     int         in_or_st;       /* Will be true iff there has been a
 266                                  * declarator (e.g. int or char) and no left
 267                                  * paren since the last semicolon. When true,
 268                                  * a '{' is starting a structure definition or
 269                                  * an initialization list */
 270     int         bl_line;        /* set to 1 by dump_line if the line is blank */
 271     int         col_1;          /* set to true if the last token started in
 272                                  * column 1 */
 273     int         com_col;        /* this is the column in which the current
 274                                  * comment should start */
 275     int         com_lines;      /* the number of lines with comments, set by
 276                                  * dump_line */
 277     int         dec_nest;       /* current nesting level for structure or init */
 278     int         decl_on_line;   /* set to true if this line of code has part
 279                                  * of a declaration on it */
 280     int         i_l_follow;     /* the level to which ind_level should be set
 281                                  * after the current line is printed */
 282     int         in_decl;        /* set to true when we are in a declaration
 283                                  * stmt.  The processing of braces is then
 284                                  * slightly different */
 285     int         in_stmt;        /* set to 1 while in a stmt */
 286     int         ind_level;      /* the current indentation level */
 287     int         ind_stmt;       /* set to 1 if next line should have an extra
 288                                  * indentation level because we are in the
 289                                  * middle of a stmt */
 290     int         last_u_d;       /* set to true after scanning a token which
 291                                  * forces a following operator to be unary */
 292     int         out_coms;       /* the number of comments processed, set by
 293                                  * pr_comment */
 294     int         out_lines;      /* the number of lines written, set by
 295                                  * dump_line */
 296     int         p_l_follow;     /* used to remember how to indent following
 297                                  * statement */
 298     int         paren_level;    /* parenthesization level. used to indent
 299                                  * within statements */
 300     short       paren_indents[20];      /* column positions of each paren */
 301     int         pcase;          /* set to 1 if the current line label is a
 302                                  * case.  It is printed differently from a
 303                                  * regular label */
 304     int         search_brace;   /* set to true by parse when it is necessary
 305                                  * to buffer up all info up to the start of a
 306                                  * stmt after an if, while, etc */
 307     int         use_ff;         /* set to one if the current line should be
 308                                  * terminated with a form feed */
 309     int         want_blank;     /* set to true when the following token should
 310                                  * be prefixed by a blank. (Said prefixing is
 311                                  * ignored in some cases.) */
 312     int         keyword;        /* the type of a keyword or 0 */
 313     int         dumped_decl_indent;
 314     int         in_parameter_declaration;
 315     int         tos;            /* pointer to top of stack */
 316     char        procname[100];  /* The name of the current procedure */
 317     int         just_saw_decl;
 318 };
 319 extern struct parser_state ps;
 320
 321 extern int         ifdef_level;
 322 extern struct parser_state state_stack[5];
 323 extern struct parser_state match_state[5];