| 1 |
adcroft |
1.1 |
/* |
| 2 |
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BISON Parser to recognise name definition records. |
| 3 |
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A name definiton record ( or def ) has form |
| 4 |
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variable(s) :: decription text |
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It is only recognised when in the comment section of a |
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code. All lines of the form above are treat as def |
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records. All other comment or executable statements are |
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ignored. |
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| 12 |
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*/ |
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%{ |
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#include "stdio.h" |
| 15 |
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#include "string.h" |
| 16 |
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int Lno; int Cno; |
| 17 |
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int i; |
| 18 |
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#include "GLOBALS.h" |
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%} |
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| 22 |
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%union { |
| 23 |
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int LineNo; |
| 24 |
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char *symbolName; |
| 25 |
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} |
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%token <LineNo> COMMENT_START |
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%token <LineNo> DESCRIP_DELIM |
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%token <LineNo> COMMA |
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%token <LineNo> SPACE |
| 31 |
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%token <LineNo> PUNCT |
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%token <LineNo> EOL |
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%token <symbolName> NAME |
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%token <symbolName> DESCRIP_TEXT |
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%% |
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input: /* empty */ |
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| input comment_statement |
| 40 |
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; |
| 41 |
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| 42 |
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/* |
| 43 |
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Definition statements |
| 44 |
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*/ |
| 45 |
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comment_statement: def_with_terminal_names |
| 46 |
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| def_with_to_be_continued_names |
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| def_with_no_names |
| 48 |
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| other_comment |
| 49 |
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; |
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| 51 |
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def_with_terminal_names: COMMENT_START general_text descript { /* Cases that are possible : Actions |
| 52 |
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1. Names open && descrip open : add names, add descrip, close names |
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2. Names closed && descrip open : close descrip, close previous, |
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log previous, start new, open descrip, |
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add descrip, open names, add names, |
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close names. |
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3. Names closed && descrip closed: start new, open descrip, |
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add descrip, open names, add names, |
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close names. |
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*/ |
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/* fprintf(stdout,"def_with_terminal_names: line %d\n",Lno); */ |
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/* Get the current line names */ |
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/* Get the current line description text */ |
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def_with_terminal_names(); |
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/* Free names and descript */ |
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for(i=namecount-1;i>=0;--i) { |
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free(namearr[i]); |
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} |
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namecount=0; |
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for(i=descriptcount-1;i>=0;--i) { |
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free(descriparr[i]); |
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} |
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descriptcount=0; |
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} |
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; |
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def_with_to_be_continued_names: COMMENT_START general_text COMMA descript { |
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/* |
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Cases that are possible : Actions |
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1. Names open && descrip open : add names, add descrip |
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2. Names closed && descrip open : close descrip, close previous, |
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log previous, start new, open descrip, |
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add descrip, open names, add names. |
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3. Names closed && descrip closed: start new, open descrip, |
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add descrip, open names, add names. |
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*/ |
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/* fprintf(stdout,"def_with_to_be_continued_names: line %d\n",Lno); */ |
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/* Get the current line names */ |
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/* Get the current line description text */ |
| 90 |
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def_with_to_be_continued_names(); |
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/* Free names and descript */ |
| 92 |
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for(i=namecount-1;i>=0;--i) { |
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free(namearr[i]); |
| 94 |
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} |
| 95 |
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namecount=0; |
| 96 |
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for(i=descriptcount-1;i>=0;--i) { |
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free(descriparr[i]); |
| 98 |
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} |
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descriptcount=0; |
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} |
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; |
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def_with_no_names: COMMENT_START punct_only_text descript {/* |
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Cases that are possible : Actions |
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1. Names open && descrip open : add descrip |
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2. Names closed && descrip open : add descrip |
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3. Names closed && descrip closed: syntax error |
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*/ |
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/* fprintf(stdout,"def_with_no_names: line %d\n",Lno); */ |
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/* Get the current line description text */ |
| 111 |
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def_with_no_names(); |
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/* Free names and descript */ |
| 113 |
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for(i=namecount-1;i>=0;--i) { |
| 114 |
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free(namearr[i]); |
| 115 |
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} |
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namecount=0; |
| 117 |
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for(i=descriptcount-1;i>=0;--i) { |
| 118 |
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free(descriparr[i]); |
| 119 |
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} |
| 120 |
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descriptcount=0; |
| 121 |
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} |
| 122 |
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| COMMENT_START descript {/* fprintf(stdout,"def_with_no_names: line %d\n",Lno); */ |
| 123 |
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/* Get the current line description text */ |
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def_with_no_names(); |
| 125 |
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/* Free names and descript */ |
| 126 |
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for(i=namecount-1;i>=0;--i) { |
| 127 |
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free(namearr[i]); |
| 128 |
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} |
| 129 |
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namecount=0; |
| 130 |
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for(i=descriptcount-1;i>=0;--i) { |
| 131 |
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free(descriparr[i]); |
| 132 |
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} |
| 133 |
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descriptcount=0; |
| 134 |
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} |
| 135 |
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; |
| 136 |
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| 137 |
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other_comment: COMMENT_START general_text EOL { /* Free names and descript */ |
| 138 |
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for(i=namecount-1;i>=0;--i) { |
| 139 |
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free(namearr[i]); |
| 140 |
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} |
| 141 |
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namecount=0; |
| 142 |
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for(i=descriptcount-1;i>=0;--i) { |
| 143 |
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free(descriparr[i]); |
| 144 |
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} |
| 145 |
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descriptcount=0; |
| 146 |
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} |
| 147 |
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| COMMENT_START EOL { /* Free names and descript */ |
| 148 |
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for(i=namecount-1;i>=0;--i) { |
| 149 |
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free(namearr[i]); |
| 150 |
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} |
| 151 |
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namecount=0; |
| 152 |
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for(i=descriptcount-1;i>=0;--i) { |
| 153 |
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free(descriparr[i]); |
| 154 |
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} |
| 155 |
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descriptcount=0; |
| 156 |
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} |
| 157 |
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; |
| 158 |
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| 159 |
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/* |
| 160 |
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One record of the name_list block |
| 161 |
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*/ |
| 162 |
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general_text: general_text general_text_element |
| 163 |
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| general_text_element {} |
| 164 |
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; |
| 165 |
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| 166 |
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general_text_element: NAME {} |
| 167 |
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| punct_only_text {} |
| 168 |
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; |
| 169 |
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| 170 |
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punct_only_text : punct_only_text punct_text_element |
| 171 |
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| punct_text_element {} |
| 172 |
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; |
| 173 |
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punct_text_element: COMMA {} |
| 175 |
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| non_comma_punct_text {} |
| 176 |
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; |
| 177 |
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| 178 |
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non_comma_punct_text: space_list {} |
| 179 |
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| PUNCT {} |
| 180 |
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; |
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space_list: space_list space_element |
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| space_element |
| 184 |
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; |
| 185 |
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| 186 |
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space_element: SPACE {} |
| 187 |
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; |
| 188 |
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| 189 |
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descript: DESCRIP_DELIM general_text EOL { /* Get the description text */ } |
| 190 |
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| DESCRIP_DELIM EOL {} |
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; |
| 192 |
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| 193 |
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%% |
| 194 |
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| 195 |
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/* Buffers for storing name blocks and definition blocks */ |
| 196 |
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#define MAX_NLIST 1000 |
| 197 |
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char *nlist[MAX_NLIST]; |
| 198 |
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int nlc=0; |
| 199 |
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| 200 |
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#define MAX_DLIST 10000 |
| 201 |
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char *dlist[MAX_DLIST]; |
| 202 |
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int dlc=0; |
| 203 |
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| 204 |
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Getcommerror(s) |
| 205 |
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char *s; |
| 206 |
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{ |
| 207 |
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printf("Error: %s. Line no. %d\n",s,Lno); |
| 208 |
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} |
| 209 |
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| 210 |
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def_with_terminal_names() |
| 211 |
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/* |
| 212 |
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== Take action when a "def_with_terminal_names" pattern is recognised == |
| 213 |
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| 214 |
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Cases that are possible : Actions |
| 215 |
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================================:===================================== |
| 216 |
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1. Names open && descrip open : add names, add descrip, close names |
| 217 |
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This is the last record of a : |
| 218 |
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name block. It will have been : |
| 219 |
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preceeded by one or more name : |
| 220 |
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block records with continue : |
| 221 |
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markers. : |
| 222 |
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: |
| 223 |
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2. Names closed && descrip open : close descrip, close previous, |
| 224 |
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This is the start of a new : log previous, start new, open descrip, |
| 225 |
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name block. This name block : add descrip, open names, add names, |
| 226 |
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only has one name record. : close names. |
| 227 |
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Need to write out the : |
| 228 |
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preceeding name and descript : |
| 229 |
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blocks. : |
| 230 |
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: |
| 231 |
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3. Names closed && descrip closed : start new, open descrip, |
| 232 |
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This is right at start of : add descrip, open names, add names, |
| 233 |
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execution and this is the : close names. |
| 234 |
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first name block record. : |
| 235 |
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*/ |
| 236 |
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{ |
| 237 |
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int i,j,k;/* Loop counters */ |
| 238 |
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int sl; /* String length */ |
| 239 |
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| 240 |
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if ( name_open == 1 && descript_open == 1 ) { |
| 241 |
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/* Append to existing block and close names for that block */ |
| 242 |
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for (i=0;i<namecount;++i) { |
| 243 |
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nlist[i+nlc] = strdup(namearr[i]); |
| 244 |
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} |
| 245 |
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nlc=nlc+namecount; |
| 246 |
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for (i=0;i<descriptcount;++i) { |
| 247 |
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dlist[i+dlc] = strdup(descriparr[i]); |
| 248 |
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} |
| 249 |
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dlc=dlc+descriptcount; |
| 250 |
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/* Close names */ |
| 251 |
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name_open = 0; |
| 252 |
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} |
| 253 |
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| 254 |
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if ( name_open == 0 && descript_open == 1 ) { |
| 255 |
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/* Flush previous name block and descrip block and start new blocks. */ |
| 256 |
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/* New name block is closed after this name record is added. */ |
| 257 |
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for (j=0;j<nlc;++j) { |
| 258 |
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fprintf(stdout,"%-50s",nlist[j]); |
| 259 |
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fprintf(stdout," {TEXT=\""); |
| 260 |
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for (i=0;i<dlc;++i) { |
| 261 |
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/* Substitue " with a space for now because VarDic parser gets confused */ |
| 262 |
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sl=strlen(dlist[i]); |
| 263 |
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for (k=0;k<sl;++k) { |
| 264 |
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if ( dlist[i][k] == '"' ) { |
| 265 |
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dlist[i][k] = ' '; |
| 266 |
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} |
| 267 |
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} |
| 268 |
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fprintf(stdout,"%s",dlist[i]); |
| 269 |
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} |
| 270 |
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fprintf(stdout,"\";}\n"); |
| 271 |
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} |
| 272 |
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| 273 |
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/* Free up block strings */ |
| 274 |
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for (i=nlc-1;i>=0;--i){ free(nlist[i]); } ; nlc = 0; |
| 275 |
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for (i=dlc-1;i>=0;--i){ free(dlist[i]); } ; dlc = 0; |
| 276 |
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| 277 |
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/* Start new name block and descrip block */ |
| 278 |
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name_open=0; descript_open=1; |
| 279 |
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nlc=0; dlc=0; |
| 280 |
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for (i=0;i<namecount;++i) { |
| 281 |
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nlist[i] = strdup(namearr[i]); |
| 282 |
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} |
| 283 |
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nlc=nlc+namecount; |
| 284 |
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for (i=0;i<descriptcount;++i) { |
| 285 |
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dlist[i] = strdup(descriparr[i]); |
| 286 |
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} |
| 287 |
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dlc=dlc+descriptcount; |
| 288 |
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} |
| 289 |
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| 290 |
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if ( name_open == 0 && descript_open == 0 ) { |
| 291 |
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/* Start new name block and descrip block. */ |
| 292 |
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/* New name block is closed after this name record is added. */ |
| 293 |
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name_open=0; descript_open=1; |
| 294 |
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nlc=0; dlc=0; |
| 295 |
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for (i=0;i<namecount;++i) { |
| 296 |
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nlist[i] = strdup(namearr[i]); |
| 297 |
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} |
| 298 |
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nlc=nlc+namecount; |
| 299 |
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for (i=0;i<descriptcount;++i) { |
| 300 |
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dlist[i] = strdup(descriparr[i]); |
| 301 |
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} |
| 302 |
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dlc=dlc+descriptcount; |
| 303 |
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} |
| 304 |
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} |
| 305 |
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def_with_to_be_continued_names() |
| 306 |
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/* |
| 307 |
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Cases that are possible : Actions |
| 308 |
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=================================:====================================== |
| 309 |
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1. Names open && descrip open : add names, add descrip |
| 310 |
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This is a continuation of an : leave names open. |
| 311 |
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already open name and : |
| 312 |
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description block. : |
| 313 |
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2. Names closed && descrip open : close descrip, close previous, |
| 314 |
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This is the start of a new : log previous, start new, open descrip, |
| 315 |
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name and description block. : add descrip, open names, add names. |
| 316 |
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: leave names open. |
| 317 |
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: |
| 318 |
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3. Names closed && descrip closed: start new, open descrip, |
| 319 |
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Beginning of parsing. First : add descrip, open names, add names. |
| 320 |
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block encountered has cont. : leave names open. |
| 321 |
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style name record. : |
| 322 |
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*/ |
| 323 |
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{ |
| 324 |
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int i,j,k;/* Loop counters */ |
| 325 |
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int sl; /* String length */ |
| 326 |
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| 327 |
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| 328 |
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if ( name_open == 1 && descript_open == 1 ) { |
| 329 |
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/* Append to existing block. Leave block open */ |
| 330 |
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for (i=0;i<namecount;++i) { |
| 331 |
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nlist[i+nlc] = strdup(namearr[i]); |
| 332 |
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} |
| 333 |
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nlc=nlc+namecount; |
| 334 |
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for (i=0;i<descriptcount;++i) { |
| 335 |
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dlist[i+dlc] = strdup(descriparr[i]); |
| 336 |
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} |
| 337 |
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dlc=dlc+descriptcount; |
| 338 |
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} |
| 339 |
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| 340 |
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if ( name_open == 0 && descript_open == 1 ) { |
| 341 |
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/* Flush previous name block and descrip block and start new blocks. */ |
| 342 |
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/* New name block left open. */ |
| 343 |
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for (j=0;j<nlc;++j) { |
| 344 |
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fprintf(stdout,"%-50s",nlist[j]); |
| 345 |
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fprintf(stdout," {TEXT=\""); |
| 346 |
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for (i=0;i<dlc;++i) { |
| 347 |
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/* Substitue " with a space for now because VarDic parser gets confused */ |
| 348 |
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sl=strlen(dlist[i]); |
| 349 |
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for (k=0;k<sl;++k) { |
| 350 |
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if ( dlist[i][k] == '"' ) { |
| 351 |
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dlist[i][k] = ' '; |
| 352 |
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} |
| 353 |
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} |
| 354 |
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fprintf(stdout,"%s",dlist[i]); |
| 355 |
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} |
| 356 |
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fprintf(stdout,"\";}\n"); |
| 357 |
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} |
| 358 |
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| 359 |
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/* Free up block strings */ |
| 360 |
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for (i=nlc-1;i>=0;--i){ free(nlist[i]); } ; nlc = 0; |
| 361 |
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for (i=dlc-1;i>=0;--i){ free(dlist[i]); } ; dlc = 0; |
| 362 |
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| 363 |
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/* Start new name block and descrip block */ |
| 364 |
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/* Leave both open. */ |
| 365 |
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name_open=1; descript_open=1; |
| 366 |
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nlc=0; dlc=0; |
| 367 |
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for (i=0;i<namecount;++i) { |
| 368 |
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nlist[i] = strdup(namearr[i]); |
| 369 |
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} |
| 370 |
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nlc=nlc+namecount; |
| 371 |
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for (i=0;i<descriptcount;++i) { |
| 372 |
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dlist[i] = strdup(descriparr[i]); |
| 373 |
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|
} |
| 374 |
|
|
dlc=dlc+descriptcount; |
| 375 |
|
|
} |
| 376 |
|
|
|
| 377 |
|
|
if ( name_open == 0 && descript_open == 0 ) { |
| 378 |
|
|
/* Start new name block and descrip block. */ |
| 379 |
|
|
/* Leave both open. */ |
| 380 |
|
|
name_open=1; descript_open=1; |
| 381 |
|
|
nlc=0; dlc=0; |
| 382 |
|
|
for (i=0;i<namecount;++i) { |
| 383 |
|
|
nlist[i] = strdup(namearr[i]); |
| 384 |
|
|
} |
| 385 |
|
|
nlc=nlc+namecount; |
| 386 |
|
|
for (i=0;i<descriptcount;++i) { |
| 387 |
|
|
dlist[i] = strdup(descriparr[i]); |
| 388 |
|
|
} |
| 389 |
|
|
dlc=dlc+descriptcount; |
| 390 |
|
|
} |
| 391 |
|
|
|
| 392 |
|
|
} |
| 393 |
|
|
|
| 394 |
|
|
def_with_no_names() |
| 395 |
|
|
/* |
| 396 |
|
|
Cases that are possible : Actions |
| 397 |
|
|
==============================:============== |
| 398 |
|
|
1. Names open && descrip open : add descrip |
| 399 |
|
|
: |
| 400 |
|
|
2. Names closed && descrip open : add descrip |
| 401 |
|
|
: |
| 402 |
|
|
3. Names closed && descrip closed: syntax error |
| 403 |
|
|
|
| 404 |
|
|
*/ |
| 405 |
|
|
{ |
| 406 |
|
|
if ( descript_open == 1 ) { |
| 407 |
|
|
/* Append to existing block */ |
| 408 |
|
|
for (i=0;i<descriptcount;++i) { |
| 409 |
|
|
dlist[i+dlc] = strdup(descriparr[i]); |
| 410 |
|
|
} |
| 411 |
|
|
dlc=dlc+descriptcount; |
| 412 |
|
|
} |
| 413 |
|
|
|
| 414 |
|
|
if ( descript_open == 0 ) { |
| 415 |
|
|
/* Description but no names */ |
| 416 |
|
|
/* Ignore with warning */ |
| 417 |
|
|
fprintf(stderr,"WARNING: Line no. %d looks like a description, but no name block is active.\n",Lno-1); |
| 418 |
|
|
} |
| 419 |
|
|
|
| 420 |
|
|
} |
| 421 |
|
|
|
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