/*
parse_statement
Checks the current token to be able to parse the correct statement
Parameters: none
Return: none
*/
void parse_statement(Tree &cst){
cst.add_branch_node("statement");
if(!(curr_token -> desc).compare("print")){
parse_print(cst);
}
else if(!(curr_token -> type).compare("identifier")){
parse_assingment(cst);
}
else if(types.find(curr_token -> desc) != types.end()){
parse_var_decl(cst);
}
else if(!(curr_token -> desc).compare("while")){
parse_while(cst);
}
else if(!(curr_token -> desc).compare("if")){
parse_if(cst);
}
else if(!(curr_token -> type).compare("open_block")){
parse_block(cst);
}
else{
std::cout << "Parse Error on line " << curr_token -> line_number
<< ".\nExpected statement, found " << curr_token -> desc
<< "\nStatements begin with:\n\tprint\n\tidentifier -- [a-z]\n\t"
<< "int, string, boolean\n\twhile\n\tif\n\t{"
<< "\n\nCompilation unsuccessful" << std::endl;
exit(EXIT_FAILURE);
}
cst.kill_all_children();
}
stmt_t parse_comp_stmt(tokenizer_t t) {
char * filename = cur_tok(t).filename;
int line = cur_tok(t).line_num;
eat_it(t, TOK_LBRACE);
stmt_list_t c = mk_stmt_list();
var_decl_list_t d = parse_var_decl(t);
stmt_t x;
while(cur_tok(t).kind != TOK_RBRACE) {
x = parse_stmt(t);
stmt_list_add(c, x);
}
eat_it(t, TOK_RBRACE);
return mk_stmt_compound(filename, line, d, c);
}