struct String read_line(struct Value * string){
//TODO: make robust if line is >= size_t characters.
// read line takes a string to display as prompt
// but displays it without quotes
string->type = TYPE_KEYWORD;
print(*string);
string->type = TYPE_STRING;
struct String input = {
.length = 0,
.body = NULL
};
char c;
while ((c = getchar()) != '\n' && c != EOF){
if (c == 0) {
ERROR("Null byte in input file");
} else if(c != '\n'){
RESIZE(input.body, input.length + 1);
input.body[input.length] = c;
input.length++;
}
}
if (input.length == 0) {
ERROR("Input closed");
}
RESIZE(input.body, input.length + 1);
input.body[input.length] = 0;
assert(string_is_sane(&input));
return input;
}
struct Tokens * tokenize(struct String file, struct Tokens *content){
assert(string_is_sane(&file));
int counter = 0;
while (counter < file.length){
char c = file.body[counter];
if(c != ' ' && c != '\n'){
struct Token t = {
.data = {
.length = 0,
.body = NULL
}
};
assert(string_is_sane(&t.data));
if(is_a_open_parens(c)){
t.type = 'o';
}
else if(is_a_close_parens(c)){
t.type = 'c';
}
else if(is_a_bracket(c)){
t.type = 'b';
}
else if(is_a_end_bracket(c)){
t.type = 'e';
}
else if(is_a_number(c)){
t.type = 'n';
while(is_a_number(c) || c == dot_const){
RESIZE(t.data.body, t.data.length+1);
t.data.body[t.data.length] = file.body[counter];
t.data.length++;
counter++;
c = file.body[counter];
}
RESIZE(t.data.body, t.data.length+1);
t.data.body[t.data.length] = 0;
assert(string_is_sane(&t.data));
counter--;
}
else if(is_a_quote(c)){
t.type = 's';
counter++;
char s = file.body[counter];
while(!is_a_quote(s)){
RESIZE(t.data.body, t.data.length+1);
t.data.body[t.data.length] = file.body[counter];
t.data.length++;
counter++;
s = file.body[counter];
}
RESIZE(t.data.body, t.data.length+1);
t.data.body[t.data.length] = 0;
assert(string_is_sane(&t.data));
}
else if(is_a_function(c)){
t.type = c;
}
else if(is_a_letter(c)){
t.type = 'k';
while(is_a_letter(c)){
RESIZE(t.data.body, t.data.length+1);
t.data.body[t.data.length] = file.body[counter];
t.data.length++;
counter++;
c = file.body[counter];
}
RESIZE(t.data.body, t.data.length+1);
t.data.body[t.data.length] = 0;
assert(string_is_sane(&t.data));
counter--;
}
content->tokens[content->length] = t;
content->length++;
}
counter++;
}
return content;
}