/**************************************************************************/
/*  gdscript_tokenizer_buffer.h                                           */
/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
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#ifndef GDSCRIPT_TOKENIZER_BUFFER_H
#define GDSCRIPT_TOKENIZER_BUFFER_H

#include "gdscript_tokenizer.h"

class GDScriptTokenizerBuffer : public GDScriptTokenizer {
public:
	enum CompressMode {
		COMPRESS_NONE,
		COMPRESS_ZSTD,
	};

	enum {
		TOKEN_BYTE_MASK = 0x80,
		TOKEN_BITS = 8,
		TOKEN_MASK = (1 << (TOKEN_BITS - 1)) - 1,
	};

	Vector<StringName> identifiers;
	Vector<Variant> constants;
	Vector<int> continuation_lines;
	HashMap<int, int> token_lines;
	HashMap<int, int> token_columns;
	Vector<Token> tokens;
	int current = 0;
	uint32_t current_line = 1;

	bool multiline_mode = false;
	List<int> indent_stack;
	List<List<int>> indent_stack_stack; // For lambdas, which require manipulating the indentation point.
	int pending_indents = 0;
	bool last_token_was_newline = false;

#ifdef TOOLS_ENABLED
	HashMap<int, CommentData> dummy;
#endif // TOOLS_ENABLED

	static int _token_to_binary(const Token &p_token, Vector<uint8_t> &r_buffer, int p_start, HashMap<StringName, uint32_t> &r_identifiers_map, HashMap<Variant, uint32_t, VariantHasher, VariantComparator> &r_constants_map);
	Token _binary_to_token(const uint8_t *p_buffer);

public:
	Error set_code_buffer(const Vector<uint8_t> &p_buffer);
	static Vector<uint8_t> parse_code_string(const String &p_code, CompressMode p_compress_mode);

	virtual int get_cursor_line() const override;
	virtual int get_cursor_column() const override;
	virtual void set_cursor_position(int p_line, int p_column) override;
	virtual void set_multiline_mode(bool p_state) override;
	virtual bool is_past_cursor() const override;
	virtual void push_expression_indented_block() override; // For lambdas, or blocks inside expressions.
	virtual void pop_expression_indented_block() override; // For lambdas, or blocks inside expressions.
	virtual bool is_text() override { return false; }

#ifdef TOOLS_ENABLED
	virtual const HashMap<int, CommentData> &get_comments() const override {
		return dummy;
	}
#endif // TOOLS_ENABLED

	virtual Token scan() override;
};

#endif // GDSCRIPT_TOKENIZER_BUFFER_H