#pragma once

#include <cstddef>

#include <functional>
#include <optional>
#include <string>
#include <vector>

/// Just enough of CMake's syntax to find and edit a command call in a CMakeLists.txt or a settings
/// file without disturbing anything else in it: comments, layout and line endings stay as they
/// were.
namespace breeze::cmake
{

	/// One argument of a call. begin/end are byte offsets of the argument as written (quotes
	/// included); text is its value without the quotes.
	struct Token
	{
		std::size_t begin = 0;
		std::size_t end = 0;
		std::string text;
		bool quoted = false;
	};

	/// A command call: name(args...). begin/end span the whole call, "name(" through ")".
	struct Call
	{
		std::string name;
		std::size_t begin = 0;
		std::size_t end = 0;
		std::vector<Token> args;
	};

	/// Every call in `text`, in order, whose name `wanted` accepts. Comments, quoted strings and
	/// the arguments of other calls are never mistaken for calls.
	std::vector<Call> findCalls(const std::string& text,
								const std::function<bool(const std::string&)>& wanted);

	/// The first set(<variable> ...) call.
	std::optional<Call> findSet(const std::string& text, const std::string& variable);

	/// `value` as a quoted CMake argument.
	std::string quote(const std::string& value);

	/// Replaces the token's text in `text` (offsets of later tokens are stale afterwards).
	void replaceToken(std::string& text, const Token& token, const std::string& replacement);

}