godot/core/string/string_builder.h

/*************************************************************************/
/*  string_builder.h                                                     */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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#ifndef STRING_BUILDER_H
#define STRING_BUILDER_H

#include "core/string/ustring.h"
#include "core/templates/vector.h"

class StringBuilder {
	uint32_t string_length = 0;

	Vector<String> strings;
	Vector<const char *> c_strings;

	// -1 means it's a Godot String
	// a natural number means C string.
	Vector<int32_t> appended_strings;

public:
	StringBuilder &append(const String &p_string);
	StringBuilder &append(const char *p_cstring);

	_FORCE_INLINE_ StringBuilder &operator+(const String &p_string) {
		return append(p_string);
	}

	_FORCE_INLINE_ StringBuilder &operator+(const char *p_cstring) {
		return append(p_cstring);
	}

	_FORCE_INLINE_ void operator+=(const String &p_string) {
		append(p_string);
	}

	_FORCE_INLINE_ void operator+=(const char *p_cstring) {
		append(p_cstring);
	}

	_FORCE_INLINE_ int num_strings_appended() const {
		return appended_strings.size();
	}

	_FORCE_INLINE_ uint32_t get_string_length() const {
		return string_length;
	}

	String as_string() const;

	_FORCE_INLINE_ operator String() const {
		return as_string();
	}

	StringBuilder() {}
};

#endif // STRING_BUILDER_H