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implemented -st and -tok functionality, updated -help

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This commit is contained in:
Annie
2025-02-20 16:07:44 -05:00
parent 56134cba48
commit 0aea539095
3 changed files with 128 additions and 71 deletions
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1
Makefile
View File

@ -44,3 +44,4 @@ clean:
rm -f $(EXE)
rm -f flex.h
rm -f *.tok
rm -f *.st

175
runner.c
View File

@ -2,96 +2,151 @@
int main(int argc, char *argv[]) {
char *check_input;
int token;
FILE *output;
if (argc == 1 || argc > 3) {
fprintf(stderr, "invalid input with 1, >3, or non .alpha arg \n");
return -1; //no alpha file or too many args
if (argc == 1) {
fprintf(stderr, "INVALID INPUT: Include a .alpha file or use -help for more inputs \n");
return -1;
} else if (argc == 2) {
//can be either -help or .alpha file
if (is_help(argv[1])) {
return 0;
} else if (is_alpha_file(argv[1], strlen(argv[1])) != 0) {
} else if (is_alpha_file(argv[1], strlen(argv[1])) == 0) {
//run flex for now
no_flag = SET_FLAG; //no argument but valid input
alpha_file = fopen(argv[1], "r");
} else {
fprintf(stderr, "INVALID INPUT: Include a .alpha file or use -help for more inputs\n");
return -1;
}
arg = NO_ARG; //no argument but valid input
yyin = fopen(argv[1], "r");
} else {
check_input = is_tok(argc, argv);
if (strcmp(CHECK_OTHER, check_input) == 0 || strcmp(INVALID_ARG, check_input) == 0) {
fprintf(stderr, "check_other or invalid_arg \n");
return -1; //invalid argument (need to update as we add more valid arguments)
//last input must be .alpha
if (is_alpha_file(argv[argc - 1], strlen(argv[argc - 1])) != 0) {
fprintf(stderr, "INVALID INPUT: Include a .alpha file at end of input or use -help for more inputs \n");
return -1;
} else {
//now check that other args are valid (flags will not be null if flag is present)
for (int i = 1; i < argc - 1; i++) {
if (check_flag(argv[i], argv[argc - 1]) != 0) {
fprintf(stderr, "INVALID FLAG(S): Use -help to view valid inputs \n");
return -1;
}
}
alpha_file = fopen(argv[argc - 1], "r");
}
output = fopen(check_input, "w");
arg = TOK_ARG; //it is a -tok arg with a valid alpha file at argv[2]
yyin = fopen(argv[2], "r");
}
while (0 != (token = yylex())) {
if (arg == TOK_ARG) {
fprintf(output, "%d %d %3d \"%s\"\n", line_number, column_number, token, yytext);
return run(alpha_file);
}
int check_flag(char *arg, char* alpha) {
if (strcmp("-tok", arg) == 0) {
if (tok_flag == NULL) {
return new_file(arg, alpha);
}
if(token == COMMENT){
for (int i = 0; i < yyleng; i++) {
if(yytext[i] == '\n'){
line_number++;
column_number = 0;
}
column_number++;
}
continue;
fprintf(stderr, "FLAGS REPEAT\n");
return -1;
} else if (strcmp("-st", arg) == 0) {
if (st_flag == NULL) {
return new_file(arg, alpha);
}
fprintf(stderr, "FLAGS REPEAT\n");
return -1;
} else {
fprintf(stderr, "INVALID FLAG: Use -help for valid inputs\n");
return -1;
}
}
int run(FILE *alpha) {
int token;
//check that file exists
if (alpha == NULL) {
fprintf(stderr, "INPUT FILE NOT FOUND\n");
return -1;
}
yyin = alpha;
while (0 != (token = yylex())) {
if (tok_flag != NULL) {
fprintf(tok_flag, "%d %d %3d \"%s\"\n", line_number, column_number, token, yytext);
}
if(token == COMMENT){
for (int i = 0; i < yyleng; i++) {
if(yytext[i] == '\n'){
line_number++;
column_number = 0;
}
column_number++;
}
continue;
}
column_number += yyleng;
}
if (st_flag != NULL) {
//output symbol table, file pointer is
fprintf(st_flag, "just checking that this works \n");
}
if (yyin != NULL) {
fclose(yyin);
}
if (output != NULL && arg == TOK_ARG) {
fclose(output);
if (tok_flag != NULL) {
fclose(tok_flag);
}
return 0;
}
bool is_help(char * input) {
if (strcmp(input, "-help") == 0) {
printf("HELP:\nHow to run the alpha compiler:\n./alpha [options] program\nValid options:\n-tok output the token number, token, line number, and column number for each of the tokens to the .tok file\n");
printf("%s", HELP);
return true;
}
return false;
}
char *is_tok(int argc, char *argv[]) {
if (argc == 3 && strcmp("-tok", argv[1]) == 0) {
char *input_prog = argv[2];
int file_len = strlen(input_prog);
//check that input program is a .alpha file
if (is_alpha_file(input_prog, file_len) != 0) {
return INVALID_ARG;
}
const char *basename = input_prog;
const char *slash = strrchr(input_prog, '/');
if (slash != NULL) {
basename = slash + 1;
}
// Calculate lengths
int basename_len = strlen(basename);
char* FILE_tok = calloc(basename_len - ALPHA_OFFSET + TOK_LEN + 2, sizeof(char));
// Copy filename and add .tok extension
strncpy(FILE_tok, basename, basename_len - ALPHA_OFFSET);
//fprintf(stderr, "hello");
strcat(FILE_tok, ".tok");
return FILE_tok;
int new_file(char *arg, char *alpha) {
int type_len;
const char *basename = alpha;
const char *slash = strchr(alpha, '/');
while (slash != NULL) {
basename = slash + 1;
slash = strchr(basename, '/');
}
return CHECK_OTHER;
if (strcmp(arg, "-tok") == 0) {
type_len = TOK_LEN;
} else if (strcmp(arg, "-st") == 0) {
type_len = ST_LEN;
} else {
fprintf(stderr, "INVALID FLAG: Use -help to view valid inputs\n");
return -1;
}
// calculate lengths
int basename_len = strlen(basename);
char *file_name = calloc(basename_len - ALPHA_OFFSET + type_len + 2, sizeof(char));
//coy filename and add extension
strncpy(file_name, basename, basename_len - ALPHA_OFFSET);
strcat(file_name, ".");
strcat(file_name, arg + 1);
if (strcmp(arg, "-tok") == 0) {
tok_flag = fopen(file_name, "w");
} else if (strcmp(arg, "-st") == 0) {
st_flag = fopen(file_name, "w");
}
return 0;
}
int is_alpha_file(char *file, int file_len) {
if (strcmp(".alpha", file + sizeof(char) * (file_len - ALPHA_OFFSET)) != 0) {
int is_alpha_file(char *alpha, int file_len) {
if (strcmp(".alpha", alpha + sizeof(char) * (file_len - ALPHA_OFFSET)) != 0) {
return -1; //not alpha file
}
return 0; //is alpha file

23
runner.h
View File

@ -1,14 +1,9 @@
#define ALPHA_OFFSET 6
#define TOK_LEN 3
//returns for is_tok
#define INVALID_ARG "invalid"
#define CHECK_OTHER "diff"
//argument type in main
#define NO_ARG 0
#define DIFF_ARG 1
#define TOK_ARG 2
#define ST_LEN 2
#define HELP "HELP:\nHow to run the alpha compiler:\n./alpha [options] program\nValid options:\n-tok output the token number, token, line number, and column number for each of the tokens to the .tok file\n-st output the symbol table for the program to the .st file\n"
//use to set flags for arg types
#define SET_FLAG 1
#include <string.h>
#include <stdio.h>
@ -21,8 +16,14 @@ extern int line_number, column_number;
extern char *yytext;
extern FILE *yyin;
int arg;
FILE *alpha_file;
FILE *tok_flag = NULL;
FILE *st_flag = NULL;
int no_flag = 0;
int main(int argc, char* argv[]);
char *is_tok(int argc, char* argv[]);
int is_alpha_file(char *file, int file_len);
int new_file(char *arg, char *alpha);
int is_alpha_file(char *alpha, int file_len);
bool is_help(char * input);
int run(FILE*alpha);
int check_flag(char * arg, char* alpha);