| 1 |
/* |
| 2 |
BISON Parser to recognise name definition records. |
| 3 |
A name definiton record ( or def ) has form |
| 4 |
|
| 5 |
variable(s) :: decription text |
| 6 |
|
| 7 |
It is only recognised when in the comment section of a |
| 8 |
code. All lines of the form above are treat as def |
| 9 |
records. All other comment or executable statements are |
| 10 |
ignored. |
| 11 |
|
| 12 |
*/ |
| 13 |
%{ |
| 14 |
#include "stdio.h" |
| 15 |
#include "string.h" |
| 16 |
int Lno; int Cno; |
| 17 |
int i; |
| 18 |
#include "GLOBALS.h" |
| 19 |
%} |
| 20 |
|
| 21 |
|
| 22 |
%union { |
| 23 |
int LineNo; |
| 24 |
char *symbolName; |
| 25 |
} |
| 26 |
|
| 27 |
%token <LineNo> COMMENT_START |
| 28 |
%token <LineNo> DESCRIP_DELIM |
| 29 |
%token <LineNo> COMMA |
| 30 |
%token <LineNo> SPACE |
| 31 |
%token <LineNo> PUNCT |
| 32 |
%token <LineNo> EOL |
| 33 |
%token <symbolName> NAME |
| 34 |
%token <symbolName> DESCRIP_TEXT |
| 35 |
|
| 36 |
%% |
| 37 |
|
| 38 |
input: /* empty */ |
| 39 |
| input comment_statement |
| 40 |
; |
| 41 |
|
| 42 |
/* |
| 43 |
Definition statements |
| 44 |
*/ |
| 45 |
comment_statement: def_with_terminal_names |
| 46 |
| def_with_to_be_continued_names |
| 47 |
| def_with_no_names |
| 48 |
| other_comment |
| 49 |
; |
| 50 |
|
| 51 |
def_with_terminal_names: COMMENT_START general_text descript { /* Cases that are possible : Actions |
| 52 |
1. Names open && descrip open : add names, add descrip, close names |
| 53 |
2. Names closed && descrip open : close descrip, close previous, |
| 54 |
log previous, start new, open descrip, |
| 55 |
add descrip, open names, add names, |
| 56 |
close names. |
| 57 |
3. Names closed && descrip closed: start new, open descrip, |
| 58 |
add descrip, open names, add names, |
| 59 |
close names. |
| 60 |
*/ |
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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]); |
| 68 |
} |
| 69 |
namecount=0; |
| 70 |
for(i=descriptcount-1;i>=0;--i) { |
| 71 |
free(descriparr[i]); |
| 72 |
} |
| 73 |
descriptcount=0; |
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} |
| 75 |
; |
| 76 |
|
| 77 |
def_with_to_be_continued_names: COMMENT_START general_text COMMA descript { |
| 78 |
/* |
| 79 |
Cases that are possible : Actions |
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1. Names open && descrip open : add names, add descrip |
| 81 |
2. Names closed && descrip open : close descrip, close previous, |
| 82 |
log previous, start new, open descrip, |
| 83 |
add descrip, open names, add names. |
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3. Names closed && descrip closed: start new, open descrip, |
| 85 |
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 |
def_with_to_be_continued_names(); |
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/* Free names and descript */ |
| 92 |
for(i=namecount-1;i>=0;--i) { |
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free(namearr[i]); |
| 94 |
} |
| 95 |
namecount=0; |
| 96 |
for(i=descriptcount-1;i>=0;--i) { |
| 97 |
free(descriparr[i]); |
| 98 |
} |
| 99 |
descriptcount=0; |
| 100 |
} |
| 101 |
; |
| 102 |
|
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def_with_no_names: COMMENT_START punct_only_text descript {/* |
| 104 |
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 |
| 107 |
3. Names closed && descrip closed: syntax error |
| 108 |
*/ |
| 109 |
/* fprintf(stdout,"def_with_no_names: line %d\n",Lno); */ |
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/* Get the current line description text */ |
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def_with_no_names(); |
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/* Free names and descript */ |
| 113 |
for(i=namecount-1;i>=0;--i) { |
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free(namearr[i]); |
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} |
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namecount=0; |
| 117 |
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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| COMMENT_START descript {/* fprintf(stdout,"def_with_no_names: line %d\n",Lno); */ |
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/* Get the current line description text */ |
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def_with_no_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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|
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other_comment: COMMENT_START general_text EOL { /* 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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| COMMENT_START EOL { /* 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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|
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/* |
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One record of the name_list block |
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*/ |
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general_text: general_text general_text_element |
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| general_text_element {} |
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; |
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|
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general_text_element: NAME {} |
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| punct_only_text {} |
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; |
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|
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punct_only_text : punct_only_text punct_text_element |
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| punct_text_element {} |
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; |
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|
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punct_text_element: COMMA {} |
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| non_comma_punct_text {} |
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; |
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|
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non_comma_punct_text: space_list {} |
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| PUNCT {} |
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; |
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|
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space_list: space_list space_element |
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| space_element |
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; |
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|
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space_element: SPACE {} |
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; |
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|
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descript: DESCRIP_DELIM general_text EOL { /* Get the description text */ } |
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| DESCRIP_DELIM EOL {} |
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; |
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|
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%% |
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|
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/* Buffers for storing name blocks and definition blocks */ |
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#define MAX_NLIST 1000 |
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char *nlist[MAX_NLIST]; |
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int nlc=0; |
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|
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#define MAX_DLIST 10000 |
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char *dlist[MAX_DLIST]; |
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int dlc=0; |
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|
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Getcommerror(s) |
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char *s; |
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{ |
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printf("Error: %s. Line no. %d\n",s,Lno); |
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} |
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|
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def_with_terminal_names() |
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/* |
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== Take action when a "def_with_terminal_names" pattern is recognised == |
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|
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Cases that are possible : Actions |
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================================:===================================== |
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1. Names open && descrip open : add names, add descrip, close names |
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This is the last record of a : |
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name block. It will have been : |
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preceeded by one or more name : |
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block records with continue : |
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markers. : |
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: |
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2. Names closed && descrip open : close descrip, close previous, |
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This is the start of a new : log previous, start new, open descrip, |
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name block. This name block : add descrip, open names, add names, |
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only has one name record. : close names. |
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Need to write out the : |
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preceeding name and descript : |
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blocks. : |
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: |
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3. Names closed && descrip closed : start new, open descrip, |
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This is right at start of : add descrip, open names, add names, |
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execution and this is the : close names. |
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first name block record. : |
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*/ |
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{ |
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int i,j,k;/* Loop counters */ |
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int sl; /* String length */ |
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|
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if ( name_open == 1 && descript_open == 1 ) { |
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/* Append to existing block and close names for that block */ |
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for (i=0;i<namecount;++i) { |
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nlist[i+nlc] = strdup(namearr[i]); |
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} |
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nlc=nlc+namecount; |
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for (i=0;i<descriptcount;++i) { |
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dlist[i+dlc] = strdup(descriparr[i]); |
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} |
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dlc=dlc+descriptcount; |
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/* Close names */ |
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name_open = 0; |
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} |
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|
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if ( name_open == 0 && descript_open == 1 ) { |
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/* Flush previous name block and descrip block and start new blocks. */ |
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/* New name block is closed after this name record is added. */ |
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for (j=0;j<nlc;++j) { |
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fprintf(stdout,"%-50s",nlist[j]); |
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fprintf(stdout," {TEXT=\""); |
| 260 |
for (i=0;i<dlc;++i) { |
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/* Substitue " with a space for now because VarDic parser gets confused */ |
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sl=strlen(dlist[i]); |
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for (k=0;k<sl;++k) { |
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if ( dlist[i][k] == '"' ) { |
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dlist[i][k] = ' '; |
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} |
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} |
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fprintf(stdout,"%s",dlist[i]); |
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} |
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fprintf(stdout,"\";}\n"); |
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} |
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|
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/* Free up block strings */ |
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for (i=nlc-1;i>=0;--i){ free(nlist[i]); } ; nlc = 0; |
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for (i=dlc-1;i>=0;--i){ free(dlist[i]); } ; dlc = 0; |
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|
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/* Start new name block and descrip block */ |
| 278 |
name_open=0; descript_open=1; |
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nlc=0; dlc=0; |
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for (i=0;i<namecount;++i) { |
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nlist[i] = strdup(namearr[i]); |
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} |
| 283 |
nlc=nlc+namecount; |
| 284 |
for (i=0;i<descriptcount;++i) { |
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dlist[i] = strdup(descriparr[i]); |
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} |
| 287 |
dlc=dlc+descriptcount; |
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} |
| 289 |
|
| 290 |
if ( name_open == 0 && descript_open == 0 ) { |
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/* Start new name block and descrip block. */ |
| 292 |
/* New name block is closed after this name record is added. */ |
| 293 |
name_open=0; descript_open=1; |
| 294 |
nlc=0; dlc=0; |
| 295 |
for (i=0;i<namecount;++i) { |
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nlist[i] = strdup(namearr[i]); |
| 297 |
} |
| 298 |
nlc=nlc+namecount; |
| 299 |
for (i=0;i<descriptcount;++i) { |
| 300 |
dlist[i] = strdup(descriparr[i]); |
| 301 |
} |
| 302 |
dlc=dlc+descriptcount; |
| 303 |
} |
| 304 |
} |
| 305 |
def_with_to_be_continued_names() |
| 306 |
/* |
| 307 |
Cases that are possible : Actions |
| 308 |
=================================:====================================== |
| 309 |
1. Names open && descrip open : add names, add descrip |
| 310 |
This is a continuation of an : leave names open. |
| 311 |
already open name and : |
| 312 |
description block. : |
| 313 |
2. Names closed && descrip open : close descrip, close previous, |
| 314 |
This is the start of a new : log previous, start new, open descrip, |
| 315 |
name and description block. : add descrip, open names, add names. |
| 316 |
: leave names open. |
| 317 |
: |
| 318 |
3. Names closed && descrip closed: start new, open descrip, |
| 319 |
Beginning of parsing. First : add descrip, open names, add names. |
| 320 |
block encountered has cont. : leave names open. |
| 321 |
style name record. : |
| 322 |
*/ |
| 323 |
{ |
| 324 |
int i,j,k;/* Loop counters */ |
| 325 |
int sl; /* String length */ |
| 326 |
|
| 327 |
|
| 328 |
if ( name_open == 1 && descript_open == 1 ) { |
| 329 |
/* Append to existing block. Leave block open */ |
| 330 |
for (i=0;i<namecount;++i) { |
| 331 |
nlist[i+nlc] = strdup(namearr[i]); |
| 332 |
} |
| 333 |
nlc=nlc+namecount; |
| 334 |
for (i=0;i<descriptcount;++i) { |
| 335 |
dlist[i+dlc] = strdup(descriparr[i]); |
| 336 |
} |
| 337 |
dlc=dlc+descriptcount; |
| 338 |
} |
| 339 |
|
| 340 |
if ( name_open == 0 && descript_open == 1 ) { |
| 341 |
/* Flush previous name block and descrip block and start new blocks. */ |
| 342 |
/* New name block left open. */ |
| 343 |
for (j=0;j<nlc;++j) { |
| 344 |
fprintf(stdout,"%-50s",nlist[j]); |
| 345 |
fprintf(stdout," {TEXT=\""); |
| 346 |
for (i=0;i<dlc;++i) { |
| 347 |
/* Substitue " with a space for now because VarDic parser gets confused */ |
| 348 |
sl=strlen(dlist[i]); |
| 349 |
for (k=0;k<sl;++k) { |
| 350 |
if ( dlist[i][k] == '"' ) { |
| 351 |
dlist[i][k] = ' '; |
| 352 |
} |
| 353 |
} |
| 354 |
fprintf(stdout,"%s",dlist[i]); |
| 355 |
} |
| 356 |
fprintf(stdout,"\";}\n"); |
| 357 |
} |
| 358 |
|
| 359 |
/* Free up block strings */ |
| 360 |
for (i=nlc-1;i>=0;--i){ free(nlist[i]); } ; nlc = 0; |
| 361 |
for (i=dlc-1;i>=0;--i){ free(dlist[i]); } ; dlc = 0; |
| 362 |
|
| 363 |
/* Start new name block and descrip block */ |
| 364 |
/* Leave both open. */ |
| 365 |
name_open=1; descript_open=1; |
| 366 |
nlc=0; dlc=0; |
| 367 |
for (i=0;i<namecount;++i) { |
| 368 |
nlist[i] = strdup(namearr[i]); |
| 369 |
} |
| 370 |
nlc=nlc+namecount; |
| 371 |
for (i=0;i<descriptcount;++i) { |
| 372 |
dlist[i] = strdup(descriparr[i]); |
| 373 |
} |
| 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 |
} |
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