/*- * SPDX-License-Identifier: BSD-4-Clause * * Copyright (c) 1985 Sun Microsystems, Inc. * Copyright (c) 1980, 1993 * The Regents of the University of California. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #define BACKSLASH '\\' #define bufsize 200 /* size of internal buffers */ #define sc_size 5000 /* size of save_com buffer */ #define label_offset 2 /* number of levels a label is placed to left * of code */ #define false 0 #define true 1 extern FILE *input; /* the fid for the input file */ extern FILE *output; /* the output file */ #define CHECK_SIZE_CODE(desired_size) \ if (e_code + (desired_size) >= l_code) { \ int nsize = l_code-s_code + 400 + desired_size; \ int code_len = e_code-s_code; \ codebuf = (char *) realloc(codebuf, nsize); \ if (codebuf == NULL) \ err(1, NULL); \ e_code = codebuf + code_len + 1; \ l_code = codebuf + nsize - 5; \ s_code = codebuf + 1; \ } #define CHECK_SIZE_COM(desired_size) \ if (e_com + (desired_size) >= l_com) { \ int nsize = l_com-s_com + 400 + desired_size; \ int com_len = e_com - s_com; \ int blank_pos; \ if (last_bl != NULL) \ blank_pos = last_bl - combuf; \ else \ blank_pos = -1; \ combuf = (char *) realloc(combuf, nsize); \ if (combuf == NULL) \ err(1, NULL); \ e_com = combuf + com_len + 1; \ if (blank_pos > 0) \ last_bl = combuf + blank_pos; \ l_com = combuf + nsize - 5; \ s_com = combuf + 1; \ } #define CHECK_SIZE_LAB(desired_size) \ if (e_lab + (desired_size) >= l_lab) { \ int nsize = l_lab-s_lab + 400 + desired_size; \ int label_len = e_lab - s_lab; \ labbuf = (char *) realloc(labbuf, nsize); \ if (labbuf == NULL) \ err(1, NULL); \ e_lab = labbuf + label_len + 1; \ l_lab = labbuf + nsize - 5; \ s_lab = labbuf + 1; \ } #define CHECK_SIZE_TOKEN(desired_size) \ if (e_token + (desired_size) >= l_token) { \ int nsize = l_token-s_token + 400 + desired_size; \ int token_len = e_token - s_token; \ tokenbuf = (char *) realloc(tokenbuf, nsize); \ if (tokenbuf == NULL) \ err(1, NULL); \ e_token = tokenbuf + token_len + 1; \ l_token = tokenbuf + nsize - 5; \ s_token = tokenbuf + 1; \ } extern char *labbuf; /* buffer for label */ extern char *s_lab; /* start ... */ extern char *e_lab; /* .. and end of stored label */ extern char *l_lab; /* limit of label buffer */ extern char *codebuf; /* buffer for code section */ extern char *s_code; /* start ... */ extern char *e_code; /* .. and end of stored code */ extern char *l_code; /* limit of code section */ extern char *combuf; /* buffer for comments */ extern char *s_com; /* start ... */ extern char *e_com; /* ... and end of stored comments */ extern char *l_com; /* limit of comment buffer */ #define token s_token extern char *tokenbuf; /* the last token scanned */ extern char *s_token; extern char *e_token; extern char *l_token; extern char *in_buffer; /* input buffer */ extern char *in_buffer_limit; /* the end of the input buffer */ extern char *buf_ptr; /* ptr to next character to be taken * from in_buffer */ extern char *buf_end; /* ptr to first after last char in * in_buffer */ extern char sc_buf[sc_size]; /* input text is saved here when looking * for the brace after an if, while, etc */ extern char *save_com; /* start of the comment stored in * sc_buf */ extern char *sc_end; /* pointer into save_com buffer */ extern char *bp_save; /* saved value of buf_ptr when taking * input from save_com */ extern char *be_save; /* similarly saved value of buf_end */ struct options { int blanklines_around_conditional_compilation; int blanklines_after_declarations_at_proctop; /* this is vaguely * similar to blanklines_after_decla except * that in only applies to the first set of * declarations in a procedure (just after * the first '{') and it causes a blank line * to be generated even if there are no * declarations */ int blanklines_after_declarations; int blanklines_after_procs; int blanklines_before_blockcomments; int leave_comma; /* if true, never break declarations after * commas */ int btype_2; /* when true, brace should be on same line * as if, while, etc */ int Bill_Shannon; /* true iff a blank should always be * inserted after sizeof */ int comment_delimiter_on_blankline; int decl_com_ind; /* the column in which comments after * declarations should be put */ int cuddle_else; /* true if else should cuddle up to '}' */ int continuation_indent; /* set to the indentation between the * edge of code and continuation lines */ float case_indent; /* The distance to indent case labels from the * switch statement */ int com_ind; /* the column in which comments to the right * of code should start */ int decl_indent; /* column to indent declared identifiers to */ int ljust_decl; /* true if declarations should be left * justified */ int unindent_displace; /* comments not to the right of code * will be placed this many * indentation levels to the left of * code */ int extra_expression_indent; /* true if continuation lines from * the expression part of "if(e)", * "while(e)", "for(e;e;e)" should be * indented an extra tab stop so that they * don't conflict with the code that follows */ int else_if; /* True iff else if pairs should be handled * specially */ int function_brace_split; /* split function declaration and * brace onto separate lines */ int format_col1_comments; /* If comments which start in column 1 * are to be magically reformatted (just * like comments that begin in later columns) */ int format_block_comments; /* true if comments beginning with * `/ * \n' are to be reformatted */ int indent_parameters; int ind_size; /* the size of one indentation level */ int block_comment_max_col; int local_decl_indent; /* like decl_indent but for locals */ int lineup_to_parens_always; /* if true, do not attempt to keep * lined-up code within the margin */ int lineup_to_parens; /* if true, continued code within parens * will be lined up to the open paren */ int pointer_as_binop; /* if true, the pointer dereference operator * will be treated as a binary operator */ int proc_calls_space; /* If true, procedure calls look like: * foo (bar) rather than foo(bar) */ int procnames_start_line; /* if true, the names of procedures * being defined get placed in column 1 (ie. * a newline is placed between the type of * the procedure and its name) */ int space_after_cast; /* "b = (int) a" vs "b = (int)a" */ int star_comment_cont; /* true iff comment continuation lines * should have stars at the beginning of * each line. */ int swallow_optional_blanklines; int auto_typedefs; /* set true to recognize identifiers * ending in "_t" like typedefs */ int tabsize; /* the size of a tab */ int max_col; /* the maximum allowable line length */ int use_tabs; /* set true to use tabs for spacing, false * uses all spaces */ int verbose; /* when true, non-essential error messages * are printed */ }; extern struct options opt; extern int found_err; extern int n_real_blanklines; extern int prefix_blankline_requested; extern int postfix_blankline_requested; extern int break_comma; /* when true and not in parens, break after a * comma */ extern float case_ind; /* indentation level to be used for a "case * n:" */ extern int code_lines; /* count of lines with code */ extern int had_eof; /* set to true when input is exhausted */ extern int line_no; /* the current line number. */ extern int inhibit_formatting; /* true if INDENT OFF is in effect */ extern int suppress_blanklines;/* set iff following blanklines should be * suppressed */ #define STACKSIZE 256 struct parser_state { int last_token; int p_stack[STACKSIZE]; /* this is the parsers stack */ int il[STACKSIZE]; /* this stack stores indentation levels */ float cstk[STACKSIZE];/* used to store case stmt indentation levels */ int box_com; /* set to true when we are in a "boxed" * comment. In that case, the first non-blank * char should be lined up with the / in / followed by * */ int comment_delta; /* used to set up indentation for all lines * of a boxed comment after the first one */ int n_comment_delta;/* remembers how many columns there were * before the start of a box comment so that * forthcoming lines of the comment are * indented properly */ int cast_mask; /* indicates which close parens potentially * close off casts */ int not_cast_mask; /* indicates which close parens definitely * close off something else than casts */ int block_init; /* true iff inside a block initialization */ int block_init_level; /* The level of brace nesting in an * initialization */ int last_nl; /* this is true if the last thing scanned was * a newline */ int in_or_st; /* Will be true iff there has been a * declarator (e.g. int or char) and no left * paren since the last semicolon. When true, * a '{' is starting a structure definition or * an initialization list */ int bl_line; /* set to 1 by dump_line if the line is blank */ int col_1; /* set to true if the last token started in * column 1 */ int com_col; /* this is the column in which the current * comment should start */ int com_lines; /* the number of lines with comments, set by * dump_line */ int dec_nest; /* current nesting level for structure or init */ int decl_on_line; /* set to true if this line of code has part * of a declaration on it */ int i_l_follow; /* the level to which ind_level should be set * after the current line is printed */ int in_decl; /* set to true when we are in a declaration * stmt. The processing of braces is then * slightly different */ int in_stmt; /* set to 1 while in a stmt */ int ind_level; /* the current indentation level */ int ind_stmt; /* set to 1 if next line should have an extra * indentation level because we are in the * middle of a stmt */ int last_u_d; /* set to true after scanning a token which * forces a following operator to be unary */ int out_coms; /* the number of comments processed, set by * pr_comment */ int out_lines; /* the number of lines written, set by * dump_line */ int p_l_follow; /* used to remember how to indent following * statement */ int paren_level; /* parenthesization level. used to indent * within statements */ short paren_indents[20]; /* column positions of each paren */ int pcase; /* set to 1 if the current line label is a * case. It is printed differently from a * regular label */ int search_brace; /* set to true by parse when it is necessary * to buffer up all info up to the start of a * stmt after an if, while, etc */ int use_ff; /* set to one if the current line should be * terminated with a form feed */ int want_blank; /* set to true when the following token should * be prefixed by a blank. (Said prefixing is * ignored in some cases.) */ int keyword; /* the type of a keyword or 0 */ int dumped_decl_indent; int in_parameter_declaration; int tos; /* pointer to top of stack */ char procname[100]; /* The name of the current procedure */ int just_saw_decl; }; extern struct parser_state ps; extern int ifdef_level; extern struct parser_state state_stack[5]; extern struct parser_state match_state[5];
