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537 lines (283 loc) · 18.5 KB
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%{
#include<stdio.h>
#include<string.h>
#include "ast.h"
FILE *html;
int ingraphics=0, ingraphicx=0, intabularx=0, incaption=0, insubcaption=0, inmultirow=0, inurl=0, inmathtools=0, inamsmath=0, inbalance=0, inenumerate=0, inleft=0;
int tablecolumn=0;
char table_align[100];
int fig_count=0, tab_count=0, section_count=0, sub_count=0, i=0,j;
char* ch=NULL, *ch1=NULL;
int value = 0;
char *ans;
char *str;
int countf;
struct newnode{
struct treenode **node;
struct newnode *next;
}*front=NULL;
int yylex();
void yyerror(char* s);
struct treenode** push(struct newnode **front, int num){
struct newnode *tnode = NULL;
if( ( tnode = (struct newnode*)malloc( sizeof(struct newnode) ) ) == NULL ) {
return NULL;
}
struct treenode **tn;
if( ( tn = (struct treenode**)malloc( num * sizeof(struct treenode*) ) ) == NULL ) {
return NULL;
}
tnode->node= tn;
tnode->next=*front;
*front=tnode;
return (*front)->node;
}
struct fig_array{
char* name;
int counter;
}arr[500];
%}
%union{
char* arr;
struct treenode * asnode;
}
%type <asnode> statement doctype pretype maiin doclabel package imagetag cap fig_label incgraphics graphic_option
%type <asnode> sectiontype subsection left leftbracepower leftbrace maths lcr
%type <asnode> tabular table_label caption_option table item content textword
%start statement
%token DOCUMENTCLASS
%token BEGINDOC
%token ENDDOC ACMART
%token TITLE SECTION LBRACE RBRACE ARTICLE LETTER PROC SUBSECTION DOUBLEBS PARA LSQR
%token USEPKG GRAPHICS GRAPHICX TABULARX CAPTION SUBCAPTION MULTIROW URL MATHTOOLS AMSMATH BALANCE INCGRAPHICS RSQR
%token BEGINFIG ENDFIG FIGCAPTION LABEL BOLD ITALIC UNDERLINE BEGINENUM ITEM ENDENUM ENUMERATE BEGINTABLE ENDTABLE REF
%token BEGINTABULAR ENDTABULAR AMPERSAND LEFT RIGHT CENTER VBAR DOLLAR SUMMATION FRACTION INTEGRATION SQRT UNDERSCORE POWER
%token <arr> WORD GREEK
%%
statement: doctype pretype BEGINDOC content maiin ENDDOC
{$$ = addnode('N',"statement",NULL,-1,returnChild( push(&front,7),6, $1,$2, addnode('T',"BEGINDOC","<body>\n",-1,NULL), $4, $5, addnode('T',"ENDDOC","</html>\n",-1,NULL) ) );
printf("level order traverse ------ \n"); dfs($$, html);}
;
doctype: DOCUMENTCLASS graphic_option LBRACE doclabel RBRACE
{ $$ = addnode('N',"doctype","<html> <head>\n",-1, returnChild( push(&front,6), 5, addnode('T',"DOCUMENTCLASS",NULL,-1,NULL),$2,addnode('T',"LBRACE",NULL,-1,NULL),
$4,addnode('T',"RBRACE",NULL,-1,NULL) ) );}
;
doclabel: ARTICLE {$$ = addnode('N',"doclabel",NULL, -1, returnChild( push(&front, 2),1, addnode('T',"Article",NULL,-1,NULL) ) ); }
| PROC {$$ = addnode('N',"doclabel",NULL, -1, returnChild( push(&front, 2),1, addnode('T',"Proc",NULL,-1,NULL) ) ); }
| LETTER {$$ = addnode('N',"doclabel",NULL,-1, returnChild( push(&front, 2),1, addnode('T',"Letter",NULL,-1,NULL) ) ); }
| ACMART {$$ = addnode('N',"doclabel",NULL,-1, returnChild( push(&front, 2),1, addnode('T',"Acmart",NULL,-1,NULL) ) );}
;
pretype: USEPKG LBRACE package RBRACE pretype
{ $$= addnode( 'N', "pretype", NULL, -1, returnChild( push(&front, 6), 5, addnode('T',"USEPKG",NULL,-1,NULL), addnode('T',"LBRACE",NULL,-1,NULL), $3, addnode('T',"RBRACE",NULL,-1,NULL),
$5 ) );}
|TITLE LBRACE textword RBRACE pretype
{$$= addnode('N', "titletype", NULL, -1, returnChild( push(&front, 6),5, addnode('T', "TITLE", "<title>" ,-1,NULL), addnode('T', "LBRACE", NULL ,-1,NULL), $3,
addnode('T',"RBRACE","</title></head>\n",-1, NULL),$5 ) );}
| {$$ = addnode('N',"pretype",NULL, -1, returnChild( push(&front, 2),1, addnode('T', "EMPTY", NULL,-1, NULL) ) );}
;
package: GRAPHICS{ingraphics=1;}
{$$= addnode('N', "package", NULL, -1, returnChild( push(&front, 2),1, addnode('T', "GRAPHICS", NULL, -1, NULL) ) );}
|GRAPHICX{ingraphicx=1;}
{$$= addnode('N', "package", NULL, -1,returnChild( push(&front, 2),1, addnode('T', "GRAPHICX", NULL,-1, NULL) ) );}
| TABULARX{intabularx=1;}
{$$= addnode('N', "package", NULL, -1, returnChild( push(&front, 2),1, addnode('T', "TABULARX", NULL, -1, NULL) ) );}
| CAPTION{incaption=1;}
{$$= addnode('N', "package", NULL, -1, returnChild( push(&front, 2),1, addnode('T', "CAPTION", NULL, -1, NULL) ) );}
| SUBCAPTION{insubcaption=1;}
{$$= addnode('N', "package", NULL,-1, returnChild( push(&front, 2),1, addnode('T', "SUBCAPTION", NULL, -1, NULL) ) );}
| MULTIROW{inmultirow=1;}
{$$= addnode('N', "package", NULL, -1, returnChild( push(&front, 2),1, addnode('T', "MULTIROW", NULL, -1,NULL) ) );}
| URL{inurl=1;}
{$$= addnode('N', "package", NULL, -1, returnChild( push(&front, 2),1, addnode('T', "URL", NULL,-1, NULL) ) );}
| MATHTOOLS{inmathtools=1;}
{$$= addnode('N', "package", NULL,-1, returnChild( push(&front, 2),1, addnode('T', "MATHTOOLS", NULL,-1, NULL) ) );}
| AMSMATH{inamsmath=1;}
{$$= addnode('N', "package", NULL,-1, returnChild( push(&front, 2),1, addnode('T', "AMSMATH", NULL,-1, NULL) ) );}
| BALANCE{inbalance=1;}
{$$= addnode('N', "package", NULL, -1,returnChild( push(&front, 2),1, addnode('T', "BALANCE", NULL, -1,NULL) ) );}
| ENUMERATE{inenumerate=1;}
{$$= addnode('N', "package", NULL, -1,returnChild( push(&front, 2),1, addnode('T', "ENUMERATE", NULL, -1,NULL) ) );}
;
imagetag: INCGRAPHICS incgraphics imagetag
{$$= addnode( 'N', "imagetag", NULL, -1, returnChild( push(&front, 4),3, addnode('T',"INCGRAPHICS",NULL,-1, NULL), $2, $3 ) );}
| FIGCAPTION graphic_option cap imagetag
{$$= addnode( 'N', "imagetag", NULL, -1,returnChild( push(&front, 5),4, addnode('T',"FIGCAPTION",NULL,-1,NULL), $2, $3,$4 ) );}
| LABEL fig_label imagetag
{$$= addnode( 'N', "imagetag", NULL, -1,returnChild( push(&front, 4),3, addnode('T',"LABEL",NULL,-1,NULL), $2, $3 ) );}
|
{$$ = addnode('N',"imagetag",NULL, -1, returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL, -1, NULL)));}
;
cap: LBRACE textword RBRACE
{$$= addnode( 'N', "cap", NULL,-1, returnChild( push(&front, 4),3, addnode('T',"LBRACE","<figcaption>",-1,NULL), $2, addnode('T',"RBRACE","</figcaption>",-1,NULL) ) );}
;
fig_label: LBRACE WORD {arr[i].name=$2; arr[i].counter= fig_count; i++;} RBRACE
{$$= addnode( 'N', "fig_label", NULL, -1,returnChild( push(&front, 4),3, addnode('T',"LBRACE",NULL,-1, NULL),addnode('T',"WORD",NULL,-1,NULL) , addnode('T',"RBRACE",NULL,-1, NULL) ) );}
;
maiin: sectiontype maiin
{$$= addnode( 'N', "maiin", NULL, -1,returnChild( push(&front, 3),2, $1, $2 ) );}
|
{$$= addnode( 'N', "maiin", "</body>\n", -1,returnChild( push(&front, 2),1, addnode('T', "empty", NULL, -1,NULL) ) );}
;
incgraphics: graphic_option LBRACE WORD RBRACE
{$$= addnode( 'N', "incgraphics", checkGraphics(ingraphicx, ingraphics), -1, returnChild( push(&front, 5),4, $1, addnode('T',"LBRACE","<img src ='",-1,NULL),
addnode('T',"WORD",$3, -1, NULL), addnode('T',"RBRACE",".jpeg'>",-1,NULL) ) );}
|
{$$ = addnode('N',"incgraphics",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1, NULL)));}
;
graphic_option: LSQR textword RSQR
{$$= addnode( 'N', "graphic_option", NULL, -1, returnChild( push(&front, 4),3, addnode('T',"LSQR",NULL,-1, NULL), addnode('T',"WORD",NULL,-1, NULL), addnode('T',"RSQR",NULL,-1, NULL) ));}
|
{$$ = addnode('N',"graphic_option",NULL, -1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1, NULL)));}
;
sectiontype: SECTION {section_count++; sub_count=0;} graphic_option LBRACE textword RBRACE content subsection
{$$= addnode( 'N', "sectiontype", NULL, -1, returnChild( push(&front, 11),10, addnode('T',"SECTION","\n<section>\n",-1,NULL), $3, addnode('T',"LBRACE","<h2>\n", -1,NULL),
addnode('T',"ADDED",NULL, section_count, NULL),$5, addnode('T',"RBRACE","</h2> \n<div>\n",-1,NULL), $7,addnode('T',"ADDED","</div>\n",-1,NULL), $8 ,
addnode('T',"ADDED","</section>\n",-1,NULL) ) );}
;
subsection: SUBSECTION {sub_count++;} graphic_option LBRACE textword RBRACE content subsection
{$$= addnode('N', "subsection", NULL, -1,returnChild(push(&front, 12),11, addnode('T',"SUBSECTION",NULL,-1,NULL),$3, addnode('T',"LBRACE","<h3>\n",-1,NULL),
addnode('T',"ADDED",NULL, section_count, NULL), addnode('T',"ADDED",".",-1, NULL), addnode('T',"ADDED",NULL, sub_count--, NULL),$5,addnode('T',"RBRACE","</h3>\n<div>\n",-1,NULL), $7,
addnode('T',"ADDED","</div>\n",-1,NULL), $8) );}
|
{$$ = addnode('N',"subsection",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL)));}
;
textword : WORD content
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,3),2,addnode('T',"WORD",$1,-1,NULL),$2));}
| DOUBLEBS content
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,3),2,addnode('T',"DOUBLEBS","<p> ",-1,NULL),$2));}
| PARA content
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,3),2,addnode('T',"PARA", "<br> ",-1,NULL),$2));}
| BOLD LBRACE textword RBRACE content
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,6),5,addnode('T',"BOLD", NULL,-1, NULL),addnode('T',"LBRACE","<b>",-1,NULL),$3, addnode('T',"RBRACE","</b>",-1,NULL),$5));}
| ITALIC LBRACE textword RBRACE content
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,6),5,addnode('T',"ITALIC", NULL,-1,NULL),addnode('T',"LBRACE","<i>",-1,NULL),$3, addnode('T',"RBRACE","</i>",-1,NULL),$5));}
| UNDERLINE LBRACE textword RBRACE content
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,6),5,addnode('T',"UNDERLINE", NULL,-1,NULL),addnode('T',"LBRACE","<u>",-1,NULL),$3, addnode('T',"RBRACE","</u>",-1,NULL),$5));}
| REF LBRACE WORD{ch=$3; j=0; int flag=1; while(1){ ch1= arr[j].name; if(strcmp(ch1,ch) == 0){ flag =0; ans = NULL;value= arr[j].counter; break;} if(j>100) break; j++; }
if(flag) {ans="??" ; value =-1;} } RBRACE content
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,6),5,addnode('T',"REF", NULL,-1,NULL),addnode('T',"LBRACE",NULL,-1,NULL),addnode('T',"WORD",ans,value,NULL),
addnode('T',"RBRACE",NULL,-1,NULL), $6));}
|
{$$ = addnode('N',"textword",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL) ));}
;
content: INCGRAPHICS{fig_count++; countf = fig_count; } incgraphics content
{$$ = addnode('N',"content",NULL,-1,returnChild(push(&front,7),6,addnode('T',"INCGRAPHICS",NULL,-1,NULL),addnode('T', "ADDED", "<figcaption>", -1,NULL),
addnode('T', "ADDED", "Figure: ", countf --,NULL), addnode('T', "ADDED", "</figcaption>", -1,NULL),$3, $4));}
| BEGINFIG{fig_count++; countf = fig_count;} graphic_option imagetag ENDFIG content
{$$ = addnode('N',"content",NULL,-1,returnChild(push(&front,9),8,addnode('T',"BEGINFIG","<figure>\n",-1,NULL),$3,addnode('T', "ADDED", "<figcaption>", -1,NULL),
addnode('T', "ADDED", "Figure: ", countf--,NULL), addnode('T', "ADDED", "</figcaption>", -1,NULL),$4,addnode('T',"ENDFIG","</figure>\n",-1,NULL),$6));}
| textword
{$$ = addnode('N',"content",NULL,-1,returnChild(push(&front,2),1,$1));}
| BEGINENUM graphic_option item ENDENUM content
{$$ = addnode('N',"content",NULL,-1,returnChild(push(&front,6),5,addnode('T',"BEGINENUM","<ol type='1'>\n",-1,NULL),$2,$3,addnode('T',"ENDENUM","</ol>\n",-1,NULL),$5));}
| BEGINTABLE {tab_count++; } graphic_option table ENDTABLE content
{$$ = addnode('N',"content",NULL,-1,returnChild(push(&front,7),6,addnode('T',"BEGINTABLE","\n<table>",-1,NULL),addnode('T',"ADDED","Table: ",tab_count,NULL),$3,$4,
addnode('T',"ENDTABLE","</table>\n",-1,NULL),$6));}
| DOLLAR maths DOLLAR content
{$$ = addnode('N',"content",NULL,-1,returnChild(push(&front,5),4,addnode('T',"DOLLAR",NULL,-1,NULL), $2,addnode('T',"DOLLAR",NULL,-1,NULL),$4));}
|LABEL LBRACE WORD {arr[i].name=$3; arr[i].counter= section_count; i++;} RBRACE content
{$$= addnode( 'N', "content", NULL, -1, returnChild( push(&front, 6),5, addnode('T', "LABEL", NULL, -1,NULL),addnode('T', "LBRACE", NULL, -1,NULL),
addnode('T', "WORD", NULL, -1,NULL), addnode('T', "RBRACE", NULL, -1,NULL), $6 ) ); }
;
item : ITEM textword item
{$$ = addnode('N',"item",NULL,-1,returnChild(push(&front,5),4,addnode('T',"ITEM","<li>",-1,NULL),$2,addnode('T',"ADDED","</li>\n",-1,NULL),$3));}
|
{$$ = addnode('N',"item",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL)));}
;
table: FIGCAPTION caption_option table
{$$ = addnode('N',"table",NULL,-1,returnChild(push(&front,4),3,addnode('T',"FIGCAPTION",NULL,-1,NULL),$2,$3));}
| BEGINTABULAR graphic_option LBRACE lcr RBRACE tabular table
{$$ = addnode('N',"table",NULL,-1,returnChild(push(&front,9),8,addnode('T',"BEGINTABLAR",NULL,-1,NULL),$2,addnode('T',"LBRACE",NULL,-1,NULL),$4,
addnode('T',"RBRACE","\n<tr> \n <td>",-1,NULL),$6, addnode('T', "ADDED", "</td>\n</tr>\n",-1, NULL),$7));}
| LABEL table_label table
{$$ = addnode('N',"table",NULL,-1,returnChild(push(&front,4),3,addnode('T',"LABEL",NULL,-1,NULL),$2,$3));}
|
{$$ = addnode('N',"table",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL)));}
;
caption_option: LBRACE textword RBRACE
{$$ = addnode('N',"caption_option",NULL,-1,returnChild(push(&front,4),3,addnode('T',"LBRACE","\n<caption>",-1,NULL),$2,addnode('T',"RBRACE","</caption>",-1,NULL)));}
| LSQR WORD RSQR LBRACE textword RBRACE
{$$ = addnode('N',"caption_option",NULL,-1,returnChild(push(&front,7),6,addnode('T',"LSQR",NULL,-1,NULL), addnode('T',"WORD",NULL,-1,NULL), addnode('T',"SQR",NULL,-1,NULL),
addnode('T',"LBRACE","\n<caption>",-1,NULL), $5,addnode('T',"RBRACE","</caption>",-1,NULL)));}
;
table_label : LBRACE WORD {arr[i].name=$2; arr[i].counter= tab_count; i++;} RBRACE
{$$ = addnode('N',"table_label",NULL,-1,returnChild(push(&front,4),3,addnode('T',"LBRACE",NULL,-1,NULL),addnode('T',"WORD",NULL,-1,NULL),addnode('T',"RBRACE",NULL,-1,NULL)));}
;
tabular: WORD tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,3),2,addnode('T',"WORD",$1,-1,NULL),$2));}
| BOLD LBRACE tabular RBRACE tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,6),5,addnode('T',"BOLD",NULL,-1,NULL),addnode('T',"LBRACE","<b>",-1,NULL),$3,addnode('T',"RBRACE","</b> ",-1,NULL),$5));}
| PARA tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,3),2,addnode('T',"PARA",NULL,-1,NULL),$2));}
| ITALIC LBRACE tabular RBRACE tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,6),5,addnode('T',"ITALIC",NULL,-1,NULL),addnode('T',"LBRACE","<i>",-1,NULL),$3,addnode('T',"RBRACE","</i> ",-1,NULL),$5));}
| UNDERLINE LBRACE tabular RBRACE tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,6),5,addnode('T',"UNDERLINE",NULL,-1,NULL),addnode('T',"LBRACE","<u>",-1,NULL),$3,addnode('T',"RBRACE","</u> ",-1,NULL),$5));}
| INCGRAPHICS incgraphics tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,4),3,addnode('T',"INCGRAPHICS",NULL,-1,NULL),$2,$3));}
| AMPERSAND tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,3),2,addnode('T',"AMPERSAND"," </td> \n <td>",-1,NULL),$2));}
| DOUBLEBS tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,3),2,addnode('T',"DOUBLEBS","</td> \n </tr> \n <tr> \n <td>",-1,NULL),$2));}
| ENDTABULAR
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,2),1,addnode('T',"ENDTABULAR",NULL,-1,NULL)));}
| DOLLAR maths DOLLAR tabular
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,5),4,addnode('T',"DOLLAR",NULL,-1,NULL),$2,addnode('T',"DOLLAR",NULL,-1,NULL),$4));}
|
{$$ = addnode('N',"tabular",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL)));}
;
lcr: LEFT lcr
{$$ = addnode('N',"lcr",NULL,-1,returnChild(push(&front,3),2,addnode('T',"LEFT",NULL,-1,NULL),$2));}
| RIGHT lcr
{$$ = addnode('N',"lcr",NULL,-1,returnChild(push(&front,3),2,addnode('T',"RIGHT",NULL,-1,NULL),$2));}
| CENTER lcr
{$$ = addnode('N',"lcr",NULL,-1,returnChild(push(&front,3),2,addnode('T',"CENTER",NULL,-1,NULL),$2));}
| VBAR lcr
{$$ = addnode('N',"lcr",NULL,-1,returnChild(push(&front,3),2,addnode('T',"VBAR",NULL,-1,NULL),$2));}
|
{$$ = addnode('N',"lcr",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL)));}
;
maths: FRACTION LBRACE maths RBRACE LBRACE maths RBRACE maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,9),8,addnode('T',"FRACTION",NULL,-1,NULL),addnode('T',"LBRACE","\n(", -1,NULL),$3, addnode('T',"RBRACE",") ⁄ (",-1,NULL),
addnode('T',"LBRACE",NULL,-1,NULL),$6,addnode('T',"RBRACE",")\n",-1,NULL),$8));}
| SQRT left maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,4),3,addnode('T',"SQRT","√",-1,NULL),$2,$3));}
| SUMMATION maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,3),2,addnode('T',"SUMMATION","∑ ",-1,NULL),$2));}
| INTEGRATION maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,3),2,addnode('T',"INTEGRATION","∫ ",-1,NULL),$2));}
| UNDERSCORE leftbrace maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,4),3,addnode('T',"UNDERSCORE","<sub> ",-1,NULL),$2,$3));}
| POWER leftbracepower maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,4),3,addnode('T',"power","<sup> ",-1,NULL),$2,$3));}
| WORD maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,3),2,addnode('T',"WORD",$1,-1,NULL),$2));}
| GREEK maths
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,3),2,addnode('T',"GREEK",$1,-1,NULL),$2));}
|
{$$ = addnode('N',"maths",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL)));}
;
leftbrace: LBRACE maths RBRACE
{$$ = addnode('N',"leftbrace",NULL,-1,returnChild(push(&front,4),3,addnode('T',"LBRACE",NULL,-1,NULL),$2, addnode('T',"RBRACE","</sub>",-1,NULL)));}
| WORD
{$$ = addnode('N',"leftbracepower",NULL,-1,returnChild(push(&front,2),1,addnode('T',"WORD",strcat($1,"</sub>"),-1,NULL)));}
;
leftbracepower: LBRACE maths RBRACE
{$$ = addnode('N',"leftbracepower",NULL,-1,returnChild(push(&front,4),3,addnode('T',"LBRACE",NULL,-1,NULL),$2, addnode('T',"RBRACE","</sup>",-1,NULL)));}
| WORD
{$$ = addnode('N',"leftbracepower",NULL,-1,returnChild(push(&front,2),1,addnode('T',"WORD",strcat($1,"</sup>"),-1,NULL)));}
;
left: LBRACE maths RBRACE
{$$ = addnode('N',"left",NULL,-1,returnChild(push(&front,4),3,addnode('T',"LBRACE","(",-1,NULL),$2, addnode('T',"RBRACE",")",-1,NULL)));}
| {$$ = addnode('N',"left",NULL,-1,returnChild(push(&front,2),1,addnode('T',"EMPTY",NULL,-1,NULL)));}
;
%%
int main(int argc, char* argv[]){
char fname[100];
strcpy(fname, argv[1]);
html= fopen(fname, "w+");
return yyparse();
}
void yyerror (char *msg) {
fprintf(html, "%s\n",msg);
}