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2016csb1043.l
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2016csb1043.l
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D int|float|char|bool
key for|if|else|switch|const|struct
op [+\-*/%<>=]|"++"|"--"|"=="|"||"|"&&"|&
vname [*]*[a-z]([a-z]|[0-9])*?("[".*"]")?
nvname1 ({vname}*[_#%$?@A-Z]+{vname}*)+
nvname2 ([*]*[0-9]+[^ \n;]*({vname}|{nvname1})+)
fname [a-z_]+
nfname {fname}*[0-9A-Z#%$?@]+{fname}*
%{
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
/* Struct for identifying the type of declaration*/
struct check{
bool isComment ;
bool isFun ;
bool isVar_Dec ;
bool isStruct;
};
typedef struct check id;
id* parse;
int counter = 0,check=0;
//vector<id> parse;
%}
%%
int line_num = 1;
/* To know all the line numbers */
\n line_num++;
/* For passing on headers */
^[ ]*"#".* ;
/* Verifying for correct variable declarartion */
[ ]*{D}[*]*[ ]+([ ]*({vname})[ ]*([=][ ]*([0-9]+|(["'].*["']))?)?[,]?)+";" {
/*Check for Documentation */
if(counter==0 || (!parse[counter-1].isComment && !parse[counter-1].isStruct)){
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
printf("Line %d Variable declaration is not documented.\n",line_num);
}
//cout<<"Line "<<line_num<<" Variable declaration is not documented"<<endl;
//parse.push_back(id(3));
if(counter>0 && parse[counter-1].isStruct)
parse[counter].isStruct = true;
parse[counter++].isVar_Dec = true;
}
/* Verifying for incorrect variable declaration */
[ ]*{D}[ ]+([ ]*(({nvname1}|{nvname2})|{vname})[ ]*([=][ ]*([0-9]+|(["'].*["']))?)?[,]?)+";" {
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
//cout<<"Line "<<line_num<<" Variable name are of invalid syntax"<<endl;
printf("Line %d Variable names are of invalid syntax.\n",line_num);
/*Check for Documentation */
//varDefect(yytext);
if(counter==0 || (!parse[counter-1].isComment && !parse[counter-1].isStruct))
printf("Line %d Variable declaration is not documented.\n",line_num);
if(counter>0 && parse[counter-1].isStruct)
parse[counter].isStruct = true;
parse[counter++].isVar_Dec = true;
//printf("%s",yytext);
}
/* For knowing statements are comments */
"/*"([^*]|"*"+[^/])*"*"+"/" {
/*To keep check of line numbers */
int i ;
for(i=0;i<yyleng;i++){
if(yytext[i] == '\n')
line_num++;
}
/* Pushing is comment to vector list for checking of
proper documentation */
if(counter>0 && parse[counter-1].isStruct)
parse[counter].isStruct = true;
parse[counter++].isComment = true;
}
/* Verifying for proper function names */
^[ ]*{D}[' ']+{fname}[ ]*"("([ ]*{D}[*]*[ ]+{vname}[,]?)*")" { /* Check for Documentation */
if(counter==0 || !parse[counter-1].isComment){
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
printf("Line %d Function is not documented.\n",line_num);
}
parse[counter++].isFun = true;
}
/*Using special declaration of struct */
[ ]*struct[ ]* {
/* Check for Documentation */
if(counter==0 || !parse[counter-1].isComment){
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
printf("Line %d Structure is not documented.\n",line_num);
}
parse[counter++].isStruct = true;
}
/*Verifying for invalid function name */
^[ ]*{D}[' ']+{nfname}[ ]*"("([ ]*{D}[*]*[ ]+{vname}[,]?)*")" {
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
printf("Line %d Function name has invalid syntax\n",line_num);
/* Check for Documentation */
if(counter==0 || !parse[counter-1].isComment)
printf("Line %d Function is not documented.\n",line_num);
parse[counter++].isFun = true;
}
/*Verifying for invalid params */
^[ ]*{D}[' ']+{fname}[ ]*"("([ ]*{D}[*]*[ ]+(({nvname2}|{nvname1})|{vname})[,]?)*")" {
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
printf("Line %d Parameters passed has invalid syntax\n",line_num);
/* Check for Documentation */
if(counter==0 || !parse[counter-1].isComment)
printf("Line %d Function is not documented.\n",line_num);
parse[counter++].isFun = true;
}
/*Verifying for both invalid params and funvtion name */
^[ ]*{D}[' ']+[^(;]+"(".*")" {
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
printf("Line %d Function name has invalid syntax\n",line_num);
printf("Line %d Parameters passed has invalid syntax\n",line_num);
/* Check for Documentation */
if(counter==0 || !parse[counter-1].isComment)
printf("Line %d Function is not documented.\n",line_num);
parse[counter++].isFun = true;
}
/*Parsing out names written in double quotes or single */
[ ]*(\"|\').*(\"|\') ;
/* Parsing out valid identifers opeartors and numbers */
([0-9]+("."[0-9]+)?)|{op}|{vname} ;
/* To classify Invalid identifers */
({nvname1}|{nvname2})* {
check++;
if(check == 1)
printf("Coding conventions are violated at : \n");
printf("Line %d Not a valid Identifier name\n",line_num);
}
/* for passing on braces and whitespaces*/
[{} \t();:,"'] ;
%%
int main(int argc,char* argv[]){
parse = (id*)malloc(1000*sizeof(id));
yyin = fopen(argv[1],"r");
yyout = fopen("./c.txt","w");
yylex();
if(check == 0)
printf("Program meets the coding conventions !\n");
return 0;
}