#pragma once
#include <optional>
#include <string>
#include <vector>
#include "utils.h"
namespace jinja {
// allow differentiate between user input strings and template strings
// transformations should handle this information as follows:
// - one-to-one (e.g., uppercase, lowercase): preserve is_input flag
// - one-to-many (e.g., strip): if input string is marked as is_input, all resulting parts should be marked as is_input
// - many-to-one (e.g., concat): if ALL input parts are marked as is_input, resulting part should be marked as is_input
struct string_part {
bool is_input = false; // may skip parsing special tokens if true
std::string val;
bool is_uppercase() const;
bool is_lowercase() const;
};
struct string {
std::vector<string_part> parts;
string() = default;
string(const std::string & v, bool user_input = false) {
parts.push_back({user_input, v});
}
string(int v) {
parts.push_back({false, std::to_string(v)});
}
string(double v) {
parts.push_back({false, std::to_string(v)});
}
// mark all parts as user input
void mark_input();
std::string str() const;
size_t length() const;
void hash_update(hasher & hash) const noexcept;
bool all_parts_are_input() const;
bool is_uppercase() const;
bool is_lowercase() const;
// mark this string as input if other has ALL parts as input
void mark_input_based_on(const string & other);
string & append(const string & other);
// in-place transformations
string uppercase();
string lowercase();
string capitalize();
string titlecase();
string strip(bool left, bool right, std::optional<const std::string_view> chars = std::nullopt);
};
} // namespace jinja