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#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include "parse.h"
#include "hashtable.h"
void symbol_add_arg(sym_t* symbol, sym_t* arg) {
symbol->argCount += 1;
if (symbol->argCount == 1) {
symbol->args = malloc(sizeof(sym_t*));
}
else {
symbol->args = realloc(symbol->args, symbol->argCount * (sizeof(sym_t*)));
}
(symbol->args)[symbol->argCount - 1] = arg;
}
void symset_add_symbol(symset_t* symbolSet, sym_t* symbol) {
symbolSet->count += 1;
if (symbolSet->count == 1) {
symbolSet->symbols = malloc(sizeof(sym_t*));
}
else {
symbolSet->symbols = realloc(symbolSet->symbols, symbolSet->count * (sizeof(sym_t*)));
}
(symbolSet->symbols)[symbolSet->count - 1] = symbol;
}
symset_t* parse_symbols(char** str) {
symset_t* symbolSet = malloc(sizeof(symset_t));
symbolSet->count = 0;
while (1) {
/* clear whitespace */
while (!isalnum(**str) && **str != '(' && **str != ')' && **str != '\0') {
(*str)++;
}
if (**str == ')') {
(*str)++;
return symbolSet;
}
else if (**str == '\0') {
return symbolSet;
}
char* symbolName = calloc(30, sizeof(char));
int i = 0;
while (1) {
symbolName[i] = **str;
if (**str == ',' || **str == ';') {
(*str)++;
symbolName[i] = '\0';
sym_t* symbol = malloc(sizeof(sym_t));
symbol->province = LITERAL;
symbol->name = symbolName;
symbol->argCount = 0;
symset_add_symbol(symbolSet, symbol);
break;
}
else if (**str == '(') {
(*str)++;
symbolName[i] = '\0';
sym_t* symbol = malloc(sizeof(sym_t));
symbol->province = KEY_REF;
symbol->argCount = 0;
if(i > 1) {
symbol->name = symbolName;
}
else {
symbol->name = "root";
}
symset_t* symbols = parse_symbols(str);
for (int s = 0; s < symbols->count; s++) {
symbol_add_arg(symbol, symbols->symbols[s]);
}
symset_add_symbol(symbolSet, symbol);
break;
}
i++;
(*str)++;
}
}
}
sym_t* parse_symbol_final(char* str) {
char** strp = malloc(sizeof(char**));
*strp = str;
symset_t* finalSymset = parse_symbols(strp);
sym_t* root = malloc(sizeof(sym_t));
root->name = "root";
root->province = KEY_REF;
for (int s = 0; s < finalSymset->count; s++) {
symbol_add_arg(root, finalSymset->symbols[s]);
}
return root;
}
void write_symbol_visual(sym_t* symbol, int offset) {
for (int o = 0; o < offset; o++) {
printf(" ");
}
printf("%s (%s)\n", (char*)(symbol->name), symbol->province == 1 ? "KEY" : "LITERAL");
for (int i = 0; i < symbol->argCount; i++) {
write_symbol_visual(symbol->args[i], offset + 4);
}
}
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