1366 lines
32 KiB
C++
1366 lines
32 KiB
C++
/*************************************************************************/
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/* gd_tokenizer.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "gd_tokenizer.h"
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#include "gd_functions.h"
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#include "io/marshalls.h"
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#include "map.h"
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#include "print_string.h"
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const char *GDTokenizer::token_names[TK_MAX] = {
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"Empty",
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"Identifier",
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"Constant",
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"Self",
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"Built-In Type",
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"Built-In Func",
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"In",
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"'=='",
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"'!='",
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"'<'",
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"'<='",
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"'>'",
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"'>='",
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"'and'",
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"'or'",
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"'not'",
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"'+'",
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"'-'",
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"'*'",
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"'/'",
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"'%'",
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"'<<'",
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"'>>'",
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"'='",
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"'+='",
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"'-='",
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"'*='",
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"'/='",
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"'%='",
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"'<<='",
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"'>>='",
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"'&='",
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"'|='",
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"'^='",
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"'&'",
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"'|'",
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"'^'",
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"'~'",
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//"Plus Plus",
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//"Minus Minus",
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"if",
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"elif",
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"else",
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"for",
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"do",
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"while",
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"switch (reserved)",
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"case (reserved)",
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"break",
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"continue",
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"pass",
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"return",
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"func",
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"class",
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"extends",
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"onready",
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"tool",
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"static",
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"export",
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"setget",
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"const",
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"var",
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"preload",
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"assert",
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"yield",
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"signal",
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"breakpoint",
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"'['",
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"']'",
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"'{'",
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"'}'",
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"'('",
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"')'",
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"','",
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"';'",
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"'.'",
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"'?'",
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"':'",
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"'\\n'",
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"PI",
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"Error",
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"EOF",
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"Cursor"
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};
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const char *GDTokenizer::get_token_name(Token p_token) {
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ERR_FAIL_INDEX_V(p_token, TK_MAX, "<error>");
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return token_names[p_token];
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}
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static bool _is_text_char(CharType c) {
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return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_';
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}
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static bool _is_number(CharType c) {
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return (c >= '0' && c <= '9');
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}
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static bool _is_hex(CharType c) {
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return (c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F');
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}
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void GDTokenizerText::_make_token(Token p_type) {
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TokenData &tk = tk_rb[tk_rb_pos];
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tk.type = p_type;
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tk.line = line;
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tk.col = column;
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tk_rb_pos = (tk_rb_pos + 1) % TK_RB_SIZE;
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}
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void GDTokenizerText::_make_identifier(const StringName &p_identifier) {
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TokenData &tk = tk_rb[tk_rb_pos];
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tk.type = TK_IDENTIFIER;
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tk.identifier = p_identifier;
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tk.line = line;
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tk.col = column;
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tk_rb_pos = (tk_rb_pos + 1) % TK_RB_SIZE;
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}
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void GDTokenizerText::_make_built_in_func(GDFunctions::Function p_func) {
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TokenData &tk = tk_rb[tk_rb_pos];
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tk.type = TK_BUILT_IN_FUNC;
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tk.func = p_func;
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tk.line = line;
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tk.col = column;
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tk_rb_pos = (tk_rb_pos + 1) % TK_RB_SIZE;
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}
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void GDTokenizerText::_make_constant(const Variant &p_constant) {
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TokenData &tk = tk_rb[tk_rb_pos];
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tk.type = TK_CONSTANT;
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tk.constant = p_constant;
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tk.line = line;
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tk.col = column;
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tk_rb_pos = (tk_rb_pos + 1) % TK_RB_SIZE;
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}
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void GDTokenizerText::_make_type(const Variant::Type &p_type) {
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TokenData &tk = tk_rb[tk_rb_pos];
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tk.type = TK_BUILT_IN_TYPE;
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tk.vtype = p_type;
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tk.line = line;
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tk.col = column;
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tk_rb_pos = (tk_rb_pos + 1) % TK_RB_SIZE;
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}
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void GDTokenizerText::_make_error(const String &p_error) {
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error_flag = true;
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last_error = p_error;
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TokenData &tk = tk_rb[tk_rb_pos];
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tk.type = TK_ERROR;
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tk.constant = p_error;
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tk.line = line;
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tk.col = column;
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tk_rb_pos = (tk_rb_pos + 1) % TK_RB_SIZE;
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}
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void GDTokenizerText::_make_newline(int p_spaces) {
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TokenData &tk = tk_rb[tk_rb_pos];
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tk.type = TK_NEWLINE;
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tk.constant = p_spaces;
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tk.line = line;
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tk.col = column;
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tk_rb_pos = (tk_rb_pos + 1) % TK_RB_SIZE;
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}
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void GDTokenizerText::_advance() {
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if (error_flag) {
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//parser broke
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_make_error(last_error);
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return;
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}
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if (code_pos >= len) {
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_make_token(TK_EOF);
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return;
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}
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#define GETCHAR(m_ofs) ((m_ofs + code_pos) >= len ? 0 : _code[m_ofs + code_pos])
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#define INCPOS(m_amount) \
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{ \
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code_pos += m_amount; \
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column += m_amount; \
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}
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while (true) {
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bool is_node_path = false;
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StringMode string_mode = STRING_DOUBLE_QUOTE;
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switch (GETCHAR(0)) {
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case 0:
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_make_token(TK_EOF);
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break;
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case '\\':
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INCPOS(1);
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if (GETCHAR(0) == '\r') {
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INCPOS(1);
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}
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if (GETCHAR(0) != '\n') {
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_make_error("Expected newline after '\\'.");
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return;
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}
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INCPOS(1);
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line++;
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while (GETCHAR(0) == ' ' || GETCHAR(0) == '\t') {
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INCPOS(1);
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}
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continue;
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case '\t':
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case '\r':
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case ' ':
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INCPOS(1);
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continue;
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case '\n': {
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line++;
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INCPOS(1);
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column = 1;
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int i = 0;
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while (GETCHAR(i) == ' ' || GETCHAR(i) == '\t') {
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i++;
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}
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_make_newline(i);
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return;
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}
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#if 1 //py style tokenizer
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case '#': { // line comment skip
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while (GETCHAR(0) != '\n') {
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code_pos++;
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if (GETCHAR(0) == 0) { //end of file
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//_make_error("Unterminated Comment");
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_make_token(TK_EOF);
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return;
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}
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}
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INCPOS(1);
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column = 1;
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line++;
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int i = 0;
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while (GETCHAR(i) == ' ' || GETCHAR(i) == '\t') {
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i++;
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}
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_make_newline(i);
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return;
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} break;
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#endif
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case '/': {
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switch (GETCHAR(1)) {
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#if 0 // c style tokenizer
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case '*': { // block comment
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int pos = code_pos+2;
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int new_line=line;
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int new_col=column+2;
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while(true) {
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if (_code[pos]=='0') {
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_make_error("Unterminated Comment");
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code_pos=pos;
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return;
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}
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if (_code[pos]=='*' && _code[pos+1]=='/') {
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new_col+=2;
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pos+=2; //compensate
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break;
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} else if (_code[pos]=='\n') {
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new_line++;
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new_col=1;
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} else {
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new_col++;
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}
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pos++;
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}
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column=new_col;
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line=new_line;
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code_pos=pos;
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continue;
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} break;
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case '/': { // line comment skip
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while(GETCHAR(0)!='\n') {
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code_pos++;
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if (GETCHAR(0)==0) { //end of file
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_make_error("Unterminated Comment");
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return;
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}
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}
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INCPOS(1);
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column=1;
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line++;
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continue;
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} break;
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#endif
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case '=': { // diveq
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_make_token(TK_OP_ASSIGN_DIV);
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INCPOS(1);
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} break;
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default:
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_make_token(TK_OP_DIV);
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}
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} break;
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case '=': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_EQUAL);
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INCPOS(1);
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} else
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_make_token(TK_OP_ASSIGN);
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} break;
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case '<': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_LESS_EQUAL);
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INCPOS(1);
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} else if (GETCHAR(1) == '<') {
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if (GETCHAR(2) == '=') {
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_make_token(TK_OP_ASSIGN_SHIFT_LEFT);
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INCPOS(1);
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} else {
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_make_token(TK_OP_SHIFT_LEFT);
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}
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INCPOS(1);
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} else
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_make_token(TK_OP_LESS);
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} break;
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case '>': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_GREATER_EQUAL);
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INCPOS(1);
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} else if (GETCHAR(1) == '>') {
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if (GETCHAR(2) == '=') {
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_make_token(TK_OP_ASSIGN_SHIFT_RIGHT);
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INCPOS(1);
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} else {
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_make_token(TK_OP_SHIFT_RIGHT);
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}
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INCPOS(1);
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} else {
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_make_token(TK_OP_GREATER);
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}
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} break;
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case '!': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_NOT_EQUAL);
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INCPOS(1);
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} else {
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_make_token(TK_OP_NOT);
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}
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} break;
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//case '"' //string - no strings in shader
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//case '\'' //string - no strings in shader
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case '{':
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_make_token(TK_CURLY_BRACKET_OPEN);
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break;
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case '}':
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_make_token(TK_CURLY_BRACKET_CLOSE);
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break;
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case '[':
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_make_token(TK_BRACKET_OPEN);
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break;
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case ']':
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_make_token(TK_BRACKET_CLOSE);
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break;
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case '(':
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_make_token(TK_PARENTHESIS_OPEN);
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break;
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case ')':
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_make_token(TK_PARENTHESIS_CLOSE);
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break;
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case ',':
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_make_token(TK_COMMA);
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break;
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case ';':
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_make_token(TK_SEMICOLON);
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break;
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case '?':
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_make_token(TK_QUESTION_MARK);
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break;
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case ':':
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_make_token(TK_COLON); //for methods maybe but now useless.
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break;
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case '^': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_ASSIGN_BIT_XOR);
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INCPOS(1);
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} else {
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_make_token(TK_OP_BIT_XOR);
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}
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} break;
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case '~':
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_make_token(TK_OP_BIT_INVERT);
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break;
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case '&': {
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if (GETCHAR(1) == '&') {
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_make_token(TK_OP_AND);
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INCPOS(1);
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} else if (GETCHAR(1) == '=') {
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_make_token(TK_OP_ASSIGN_BIT_AND);
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INCPOS(1);
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} else {
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_make_token(TK_OP_BIT_AND);
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}
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} break;
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case '|': {
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if (GETCHAR(1) == '|') {
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_make_token(TK_OP_OR);
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INCPOS(1);
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} else if (GETCHAR(1) == '=') {
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_make_token(TK_OP_ASSIGN_BIT_OR);
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INCPOS(1);
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} else {
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_make_token(TK_OP_BIT_OR);
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}
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} break;
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case '*': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_ASSIGN_MUL);
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INCPOS(1);
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} else {
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_make_token(TK_OP_MUL);
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}
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} break;
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case '+': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_ASSIGN_ADD);
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INCPOS(1);
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//} else if (GETCHAR(1)=='+') {
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// _make_token(TK_OP_PLUS_PLUS);
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// INCPOS(1);
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} else {
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_make_token(TK_OP_ADD);
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}
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|
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|
} break;
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case '-': {
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if (GETCHAR(1) == '=') {
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_make_token(TK_OP_ASSIGN_SUB);
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INCPOS(1);
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//} else if (GETCHAR(1)=='-') {
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// _make_token(TK_OP_MINUS_MINUS);
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// INCPOS(1);
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} else {
|
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_make_token(TK_OP_SUB);
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}
|
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} break;
|
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case '%': {
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|
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if (GETCHAR(1) == '=') {
|
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_make_token(TK_OP_ASSIGN_MOD);
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INCPOS(1);
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|
} else {
|
|
_make_token(TK_OP_MOD);
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|
}
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|
} break;
|
|
case '@':
|
|
if (CharType(GETCHAR(1)) != '"' && CharType(GETCHAR(1)) != '\'') {
|
|
_make_error("Unexpected '@'");
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|
return;
|
|
}
|
|
INCPOS(1);
|
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is_node_path = true;
|
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|
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case '\'':
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case '"': {
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if (GETCHAR(0) == '\'')
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string_mode = STRING_SINGLE_QUOTE;
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|
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int i = 1;
|
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if (string_mode == STRING_DOUBLE_QUOTE && GETCHAR(i) == '"' && GETCHAR(i + 1) == '"') {
|
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i += 2;
|
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string_mode = STRING_MULTILINE;
|
|
}
|
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|
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String str;
|
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while (true) {
|
|
if (CharType(GETCHAR(i)) == 0) {
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|
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_make_error("Unterminated String");
|
|
return;
|
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} else if (string_mode == STRING_DOUBLE_QUOTE && CharType(GETCHAR(i)) == '"') {
|
|
break;
|
|
} else if (string_mode == STRING_SINGLE_QUOTE && CharType(GETCHAR(i)) == '\'') {
|
|
break;
|
|
} else if (string_mode == STRING_MULTILINE && CharType(GETCHAR(i)) == '\"' && CharType(GETCHAR(i + 1)) == '\"' && CharType(GETCHAR(i + 2)) == '\"') {
|
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i += 2;
|
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break;
|
|
} else if (string_mode != STRING_MULTILINE && CharType(GETCHAR(i)) == '\n') {
|
|
_make_error("Unexpected EOL at String.");
|
|
return;
|
|
} else if (CharType(GETCHAR(i)) == 0xFFFF) {
|
|
//string ends here, next will be TK
|
|
i--;
|
|
break;
|
|
} else if (CharType(GETCHAR(i)) == '\\') {
|
|
//escaped characters...
|
|
i++;
|
|
CharType next = GETCHAR(i);
|
|
if (next == 0) {
|
|
_make_error("Unterminated String");
|
|
return;
|
|
}
|
|
CharType res = 0;
|
|
|
|
switch (next) {
|
|
|
|
case 'a': res = 7; break;
|
|
case 'b': res = 8; break;
|
|
case 't': res = 9; break;
|
|
case 'n': res = 10; break;
|
|
case 'v': res = 11; break;
|
|
case 'f': res = 12; break;
|
|
case 'r': res = 13; break;
|
|
case '\'': res = '\''; break;
|
|
case '\"': res = '\"'; break;
|
|
case '\\': res = '\\'; break;
|
|
case '/':
|
|
res = '/';
|
|
break; //wtf
|
|
|
|
case 'u': {
|
|
//hexnumbarh - oct is deprecated
|
|
i += 1;
|
|
for (int j = 0; j < 4; j++) {
|
|
CharType c = GETCHAR(i + j);
|
|
if (c == 0) {
|
|
_make_error("Unterminated String");
|
|
return;
|
|
}
|
|
if (!((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F'))) {
|
|
|
|
_make_error("Malformed hex constant in string");
|
|
return;
|
|
}
|
|
CharType v;
|
|
if (c >= '0' && c <= '9') {
|
|
v = c - '0';
|
|
} else if (c >= 'a' && c <= 'f') {
|
|
v = c - 'a';
|
|
v += 10;
|
|
} else if (c >= 'A' && c <= 'F') {
|
|
v = c - 'A';
|
|
v += 10;
|
|
} else {
|
|
ERR_PRINT("BUG");
|
|
v = 0;
|
|
}
|
|
|
|
res <<= 4;
|
|
res |= v;
|
|
}
|
|
i += 3;
|
|
|
|
} break;
|
|
default: {
|
|
|
|
_make_error("Invalid escape sequence");
|
|
return;
|
|
} break;
|
|
}
|
|
|
|
str += res;
|
|
|
|
} else {
|
|
if (CharType(GETCHAR(i)) == '\n') {
|
|
line++;
|
|
column = 1;
|
|
}
|
|
|
|
str += CharType(GETCHAR(i));
|
|
}
|
|
i++;
|
|
}
|
|
INCPOS(i);
|
|
|
|
if (is_node_path) {
|
|
_make_constant(NodePath(str));
|
|
} else {
|
|
_make_constant(str);
|
|
}
|
|
|
|
} break;
|
|
case 0xFFFF: {
|
|
_make_token(TK_CURSOR);
|
|
} break;
|
|
default: {
|
|
|
|
if (_is_number(GETCHAR(0)) || (GETCHAR(0) == '.' && _is_number(GETCHAR(1)))) {
|
|
// parse number
|
|
bool period_found = false;
|
|
bool exponent_found = false;
|
|
bool hexa_found = false;
|
|
bool sign_found = false;
|
|
|
|
String str;
|
|
int i = 0;
|
|
|
|
while (true) {
|
|
if (GETCHAR(i) == '.') {
|
|
if (period_found || exponent_found) {
|
|
_make_error("Invalid numeric constant at '.'");
|
|
return;
|
|
}
|
|
period_found = true;
|
|
} else if (GETCHAR(i) == 'x') {
|
|
if (hexa_found || str.length() != 1 || !((i == 1 && str[0] == '0') || (i == 2 && str[1] == '0' && str[0] == '-'))) {
|
|
_make_error("Invalid numeric constant at 'x'");
|
|
return;
|
|
}
|
|
hexa_found = true;
|
|
} else if (!hexa_found && GETCHAR(i) == 'e') {
|
|
if (hexa_found || exponent_found) {
|
|
_make_error("Invalid numeric constant at 'e'");
|
|
return;
|
|
}
|
|
exponent_found = true;
|
|
} else if (_is_number(GETCHAR(i))) {
|
|
//all ok
|
|
} else if (hexa_found && _is_hex(GETCHAR(i))) {
|
|
|
|
} else if ((GETCHAR(i) == '-' || GETCHAR(i) == '+') && exponent_found) {
|
|
if (sign_found) {
|
|
_make_error("Invalid numeric constant at '-'");
|
|
return;
|
|
}
|
|
sign_found = true;
|
|
} else
|
|
break;
|
|
|
|
str += CharType(GETCHAR(i));
|
|
i++;
|
|
}
|
|
|
|
if (!(_is_number(str[str.length() - 1]) || (hexa_found && _is_hex(str[str.length() - 1])))) {
|
|
_make_error("Invalid numeric constant: " + str);
|
|
return;
|
|
}
|
|
|
|
INCPOS(str.length());
|
|
if (hexa_found) {
|
|
int val = str.hex_to_int();
|
|
_make_constant(val);
|
|
} else if (period_found || exponent_found) {
|
|
real_t val = str.to_double();
|
|
//print_line("*%*%*%*% to convert: "+str+" result: "+rtos(val));
|
|
_make_constant(val);
|
|
} else {
|
|
int val = str.to_int();
|
|
_make_constant(val);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (GETCHAR(0) == '.') {
|
|
//parse period
|
|
_make_token(TK_PERIOD);
|
|
break;
|
|
}
|
|
|
|
if (_is_text_char(GETCHAR(0))) {
|
|
// parse identifier
|
|
String str;
|
|
str += CharType(GETCHAR(0));
|
|
|
|
int i = 1;
|
|
while (_is_text_char(GETCHAR(i))) {
|
|
str += CharType(GETCHAR(i));
|
|
i++;
|
|
}
|
|
|
|
bool identifier = false;
|
|
|
|
if (str == "null") {
|
|
_make_constant(Variant());
|
|
|
|
} else if (str == "true") {
|
|
_make_constant(true);
|
|
|
|
} else if (str == "false") {
|
|
_make_constant(false);
|
|
} else {
|
|
|
|
bool found = false;
|
|
|
|
struct _bit {
|
|
Variant::Type type;
|
|
const char *text;
|
|
};
|
|
//built in types
|
|
|
|
static const _bit type_list[] = {
|
|
//types
|
|
{ Variant::BOOL, "bool" },
|
|
{ Variant::INT, "int" },
|
|
{ Variant::REAL, "float" },
|
|
{ Variant::STRING, "String" },
|
|
{ Variant::VECTOR2, "Vector2" },
|
|
{ Variant::RECT2, "Rect2" },
|
|
{ Variant::MATRIX32, "Matrix32" },
|
|
{ Variant::VECTOR3, "Vector3" },
|
|
{ Variant::_AABB, "AABB" },
|
|
{ Variant::_AABB, "Rect3" },
|
|
{ Variant::PLANE, "Plane" },
|
|
{ Variant::QUAT, "Quat" },
|
|
{ Variant::MATRIX3, "Matrix3" },
|
|
{ Variant::TRANSFORM, "Transform" },
|
|
{ Variant::COLOR, "Color" },
|
|
{ Variant::IMAGE, "Image" },
|
|
{ Variant::_RID, "RID" },
|
|
{ Variant::OBJECT, "Object" },
|
|
{ Variant::INPUT_EVENT, "InputEvent" },
|
|
{ Variant::NODE_PATH, "NodePath" },
|
|
{ Variant::DICTIONARY, "Dictionary" },
|
|
{ Variant::ARRAY, "Array" },
|
|
{ Variant::RAW_ARRAY, "RawArray" },
|
|
{ Variant::INT_ARRAY, "IntArray" },
|
|
{ Variant::REAL_ARRAY, "FloatArray" },
|
|
{ Variant::STRING_ARRAY, "StringArray" },
|
|
{ Variant::VECTOR2_ARRAY, "Vector2Array" },
|
|
{ Variant::VECTOR3_ARRAY, "Vector3Array" },
|
|
{ Variant::COLOR_ARRAY, "ColorArray" },
|
|
{ Variant::VARIANT_MAX, NULL },
|
|
};
|
|
|
|
{
|
|
|
|
int idx = 0;
|
|
|
|
while (type_list[idx].text) {
|
|
|
|
if (str == type_list[idx].text) {
|
|
_make_type(type_list[idx].type);
|
|
found = true;
|
|
break;
|
|
}
|
|
idx++;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
|
|
//built in func?
|
|
|
|
for (int i = 0; i < GDFunctions::FUNC_MAX; i++) {
|
|
|
|
if (str == GDFunctions::get_func_name(GDFunctions::Function(i))) {
|
|
|
|
_make_built_in_func(GDFunctions::Function(i));
|
|
found = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
//keywor
|
|
}
|
|
|
|
if (!found) {
|
|
|
|
struct _kws {
|
|
Token token;
|
|
const char *text;
|
|
};
|
|
|
|
static const _kws keyword_list[] = {
|
|
//ops
|
|
{ TK_OP_IN, "in" },
|
|
{ TK_OP_NOT, "not" },
|
|
{ TK_OP_OR, "or" },
|
|
{ TK_OP_AND, "and" },
|
|
//func
|
|
{ TK_PR_FUNCTION, "func" },
|
|
{ TK_PR_CLASS, "class" },
|
|
{ TK_PR_EXTENDS, "extends" },
|
|
{ TK_PR_ONREADY, "onready" },
|
|
{ TK_PR_TOOL, "tool" },
|
|
{ TK_PR_STATIC, "static" },
|
|
{ TK_PR_EXPORT, "export" },
|
|
{ TK_PR_SETGET, "setget" },
|
|
{ TK_PR_VAR, "var" },
|
|
{ TK_PR_PRELOAD, "preload" },
|
|
{ TK_PR_ASSERT, "assert" },
|
|
{ TK_PR_YIELD, "yield" },
|
|
{ TK_PR_SIGNAL, "signal" },
|
|
{ TK_PR_BREAKPOINT, "breakpoint" },
|
|
{ TK_PR_CONST, "const" },
|
|
//controlflow
|
|
{ TK_CF_IF, "if" },
|
|
{ TK_CF_ELIF, "elif" },
|
|
{ TK_CF_ELSE, "else" },
|
|
{ TK_CF_FOR, "for" },
|
|
{ TK_CF_WHILE, "while" },
|
|
{ TK_CF_DO, "do" },
|
|
{ TK_CF_SWITCH, "switch" },
|
|
{ TK_CF_CASE, "case" },
|
|
{ TK_CF_BREAK, "break" },
|
|
{ TK_CF_CONTINUE, "continue" },
|
|
{ TK_CF_RETURN, "return" },
|
|
{ TK_CF_PASS, "pass" },
|
|
{ TK_SELF, "self" },
|
|
{ TK_CONST_PI, "PI" },
|
|
{ TK_ERROR, NULL }
|
|
};
|
|
|
|
int idx = 0;
|
|
found = false;
|
|
|
|
while (keyword_list[idx].text) {
|
|
|
|
if (str == keyword_list[idx].text) {
|
|
_make_token(keyword_list[idx].token);
|
|
found = true;
|
|
break;
|
|
}
|
|
idx++;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
identifier = true;
|
|
}
|
|
|
|
if (identifier) {
|
|
_make_identifier(str);
|
|
}
|
|
INCPOS(str.length());
|
|
return;
|
|
}
|
|
|
|
_make_error("Unknown character");
|
|
return;
|
|
|
|
} break;
|
|
}
|
|
|
|
INCPOS(1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void GDTokenizerText::set_code(const String &p_code) {
|
|
|
|
code = p_code;
|
|
len = p_code.length();
|
|
if (len) {
|
|
_code = &code[0];
|
|
} else {
|
|
_code = NULL;
|
|
}
|
|
code_pos = 0;
|
|
line = 1; //it is stand-ar-ized that lines begin in 1 in code..
|
|
column = 1; //the same holds for columns
|
|
tk_rb_pos = 0;
|
|
error_flag = false;
|
|
last_error = "";
|
|
for (int i = 0; i < MAX_LOOKAHEAD + 1; i++)
|
|
_advance();
|
|
}
|
|
|
|
GDTokenizerText::Token GDTokenizerText::get_token(int p_offset) const {
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, TK_ERROR);
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, TK_ERROR);
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
return tk_rb[ofs].type;
|
|
}
|
|
|
|
int GDTokenizerText::get_token_line(int p_offset) const {
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, -1);
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, -1);
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
return tk_rb[ofs].line;
|
|
}
|
|
|
|
int GDTokenizerText::get_token_column(int p_offset) const {
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, -1);
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, -1);
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
return tk_rb[ofs].col;
|
|
}
|
|
|
|
const Variant &GDTokenizerText::get_token_constant(int p_offset) const {
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, tk_rb[0].constant);
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, tk_rb[0].constant);
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
ERR_FAIL_COND_V(tk_rb[ofs].type != TK_CONSTANT, tk_rb[0].constant);
|
|
return tk_rb[ofs].constant;
|
|
}
|
|
StringName GDTokenizerText::get_token_identifier(int p_offset) const {
|
|
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, StringName());
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, StringName());
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
ERR_FAIL_COND_V(tk_rb[ofs].type != TK_IDENTIFIER, StringName());
|
|
return tk_rb[ofs].identifier;
|
|
}
|
|
|
|
GDFunctions::Function GDTokenizerText::get_token_built_in_func(int p_offset) const {
|
|
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, GDFunctions::FUNC_MAX);
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, GDFunctions::FUNC_MAX);
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
ERR_FAIL_COND_V(tk_rb[ofs].type != TK_BUILT_IN_FUNC, GDFunctions::FUNC_MAX);
|
|
return tk_rb[ofs].func;
|
|
}
|
|
|
|
Variant::Type GDTokenizerText::get_token_type(int p_offset) const {
|
|
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, Variant::NIL);
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, Variant::NIL);
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
ERR_FAIL_COND_V(tk_rb[ofs].type != TK_BUILT_IN_TYPE, Variant::NIL);
|
|
return tk_rb[ofs].vtype;
|
|
}
|
|
|
|
int GDTokenizerText::get_token_line_indent(int p_offset) const {
|
|
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, 0);
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, 0);
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
ERR_FAIL_COND_V(tk_rb[ofs].type != TK_NEWLINE, 0);
|
|
return tk_rb[ofs].constant;
|
|
}
|
|
|
|
String GDTokenizerText::get_token_error(int p_offset) const {
|
|
|
|
ERR_FAIL_COND_V(p_offset <= -MAX_LOOKAHEAD, String());
|
|
ERR_FAIL_COND_V(p_offset >= MAX_LOOKAHEAD, String());
|
|
|
|
int ofs = (TK_RB_SIZE + tk_rb_pos + p_offset - MAX_LOOKAHEAD - 1) % TK_RB_SIZE;
|
|
ERR_FAIL_COND_V(tk_rb[ofs].type != TK_ERROR, String());
|
|
return tk_rb[ofs].constant;
|
|
}
|
|
|
|
void GDTokenizerText::advance(int p_amount) {
|
|
|
|
ERR_FAIL_COND(p_amount <= 0);
|
|
for (int i = 0; i < p_amount; i++)
|
|
_advance();
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#define BYTECODE_VERSION 10
|
|
|
|
Error GDTokenizerBuffer::set_code_buffer(const Vector<uint8_t> &p_buffer) {
|
|
|
|
const uint8_t *buf = p_buffer.ptr();
|
|
int total_len = p_buffer.size();
|
|
ERR_FAIL_COND_V(p_buffer.size() < 24 || p_buffer[0] != 'G' || p_buffer[1] != 'D' || p_buffer[2] != 'S' || p_buffer[3] != 'C', ERR_INVALID_DATA);
|
|
|
|
int version = decode_uint32(&buf[4]);
|
|
if (version > BYTECODE_VERSION) {
|
|
ERR_EXPLAIN("Bytecode is too New! Please use a newer engine version.");
|
|
ERR_FAIL_COND_V(version > BYTECODE_VERSION, ERR_INVALID_DATA);
|
|
}
|
|
int identifier_count = decode_uint32(&buf[8]);
|
|
int constant_count = decode_uint32(&buf[12]);
|
|
int line_count = decode_uint32(&buf[16]);
|
|
int token_count = decode_uint32(&buf[20]);
|
|
|
|
const uint8_t *b = buf;
|
|
|
|
b = &buf[24];
|
|
total_len -= 24;
|
|
|
|
identifiers.resize(identifier_count);
|
|
for (int i = 0; i < identifier_count; i++) {
|
|
|
|
int len = decode_uint32(b);
|
|
ERR_FAIL_COND_V(len > total_len, ERR_INVALID_DATA);
|
|
b += 4;
|
|
Vector<uint8_t> cs;
|
|
cs.resize(len);
|
|
for (int j = 0; j < len; j++) {
|
|
cs[j] = b[j] ^ 0xb6;
|
|
}
|
|
|
|
cs[cs.size() - 1] = 0;
|
|
String s;
|
|
s.parse_utf8((const char *)cs.ptr());
|
|
b += len;
|
|
total_len -= len + 4;
|
|
identifiers[i] = s;
|
|
}
|
|
|
|
constants.resize(constant_count);
|
|
for (int i = 0; i < constant_count; i++) {
|
|
|
|
Variant v;
|
|
int len;
|
|
Error err = decode_variant(v, b, total_len, &len);
|
|
if (err)
|
|
return err;
|
|
b += len;
|
|
total_len -= len;
|
|
constants[i] = v;
|
|
}
|
|
|
|
ERR_FAIL_COND_V(line_count * 8 > total_len, ERR_INVALID_DATA);
|
|
|
|
for (int i = 0; i < line_count; i++) {
|
|
|
|
uint32_t token = decode_uint32(b);
|
|
b += 4;
|
|
uint32_t linecol = decode_uint32(b);
|
|
b += 4;
|
|
|
|
lines.insert(token, linecol);
|
|
total_len -= 8;
|
|
}
|
|
|
|
tokens.resize(token_count);
|
|
|
|
for (int i = 0; i < token_count; i++) {
|
|
|
|
ERR_FAIL_COND_V(total_len < 1, ERR_INVALID_DATA);
|
|
|
|
if ((*b) & TOKEN_BYTE_MASK) { //little endian always
|
|
ERR_FAIL_COND_V(total_len < 4, ERR_INVALID_DATA);
|
|
|
|
tokens[i] = decode_uint32(b) & ~TOKEN_BYTE_MASK;
|
|
b += 4;
|
|
} else {
|
|
tokens[i] = *b;
|
|
b += 1;
|
|
total_len--;
|
|
}
|
|
}
|
|
|
|
token = 0;
|
|
|
|
return OK;
|
|
}
|
|
|
|
Vector<uint8_t> GDTokenizerBuffer::parse_code_string(const String &p_code) {
|
|
|
|
Vector<uint8_t> buf;
|
|
|
|
Map<StringName, int> identifier_map;
|
|
HashMap<Variant, int, VariantHasher> constant_map;
|
|
Map<uint32_t, int> line_map;
|
|
Vector<uint32_t> token_array;
|
|
|
|
GDTokenizerText tt;
|
|
tt.set_code(p_code);
|
|
int line = -1;
|
|
|
|
while (true) {
|
|
|
|
if (tt.get_token_line() != line) {
|
|
|
|
line = tt.get_token_line();
|
|
line_map[line] = token_array.size();
|
|
}
|
|
|
|
uint32_t token = tt.get_token();
|
|
switch (tt.get_token()) {
|
|
|
|
case TK_IDENTIFIER: {
|
|
StringName id = tt.get_token_identifier();
|
|
if (!identifier_map.has(id)) {
|
|
int idx = identifier_map.size();
|
|
identifier_map[id] = idx;
|
|
}
|
|
token |= identifier_map[id] << TOKEN_BITS;
|
|
} break;
|
|
case TK_CONSTANT: {
|
|
|
|
Variant c = tt.get_token_constant();
|
|
if (!constant_map.has(c)) {
|
|
int idx = constant_map.size();
|
|
constant_map[c] = idx;
|
|
}
|
|
token |= constant_map[c] << TOKEN_BITS;
|
|
} break;
|
|
case TK_BUILT_IN_TYPE: {
|
|
|
|
token |= tt.get_token_type() << TOKEN_BITS;
|
|
} break;
|
|
case TK_BUILT_IN_FUNC: {
|
|
|
|
token |= tt.get_token_built_in_func() << TOKEN_BITS;
|
|
|
|
} break;
|
|
case TK_NEWLINE: {
|
|
|
|
token |= tt.get_token_line_indent() << TOKEN_BITS;
|
|
} break;
|
|
case TK_ERROR: {
|
|
|
|
ERR_FAIL_V(Vector<uint8_t>());
|
|
} break;
|
|
default: {}
|
|
};
|
|
|
|
token_array.push_back(token);
|
|
|
|
if (tt.get_token() == TK_EOF)
|
|
break;
|
|
tt.advance();
|
|
}
|
|
|
|
//reverse maps
|
|
|
|
Map<int, StringName> rev_identifier_map;
|
|
for (Map<StringName, int>::Element *E = identifier_map.front(); E; E = E->next()) {
|
|
rev_identifier_map[E->get()] = E->key();
|
|
}
|
|
|
|
Map<int, Variant> rev_constant_map;
|
|
const Variant *K = NULL;
|
|
while ((K = constant_map.next(K))) {
|
|
rev_constant_map[constant_map[*K]] = *K;
|
|
}
|
|
|
|
Map<int, uint32_t> rev_line_map;
|
|
for (Map<uint32_t, int>::Element *E = line_map.front(); E; E = E->next()) {
|
|
rev_line_map[E->get()] = E->key();
|
|
}
|
|
|
|
//save header
|
|
buf.resize(24);
|
|
buf[0] = 'G';
|
|
buf[1] = 'D';
|
|
buf[2] = 'S';
|
|
buf[3] = 'C';
|
|
encode_uint32(BYTECODE_VERSION, &buf[4]);
|
|
encode_uint32(identifier_map.size(), &buf[8]);
|
|
encode_uint32(constant_map.size(), &buf[12]);
|
|
encode_uint32(line_map.size(), &buf[16]);
|
|
encode_uint32(token_array.size(), &buf[20]);
|
|
|
|
//save identifiers
|
|
|
|
for (Map<int, StringName>::Element *E = rev_identifier_map.front(); E; E = E->next()) {
|
|
|
|
CharString cs = String(E->get()).utf8();
|
|
int len = cs.length() + 1;
|
|
int extra = 4 - (len % 4);
|
|
if (extra == 4)
|
|
extra = 0;
|
|
|
|
uint8_t ibuf[4];
|
|
encode_uint32(len + extra, ibuf);
|
|
for (int i = 0; i < 4; i++) {
|
|
buf.push_back(ibuf[i]);
|
|
}
|
|
for (int i = 0; i < len; i++) {
|
|
buf.push_back(cs[i] ^ 0xb6);
|
|
}
|
|
for (int i = 0; i < extra; i++) {
|
|
buf.push_back(0 ^ 0xb6);
|
|
}
|
|
}
|
|
|
|
for (Map<int, Variant>::Element *E = rev_constant_map.front(); E; E = E->next()) {
|
|
|
|
int len;
|
|
Error err = encode_variant(E->get(), NULL, len);
|
|
ERR_FAIL_COND_V(err != OK, Vector<uint8_t>());
|
|
int pos = buf.size();
|
|
buf.resize(pos + len);
|
|
encode_variant(E->get(), &buf[pos], len);
|
|
}
|
|
|
|
for (Map<int, uint32_t>::Element *E = rev_line_map.front(); E; E = E->next()) {
|
|
|
|
uint8_t ibuf[8];
|
|
encode_uint32(E->key(), &ibuf[0]);
|
|
encode_uint32(E->get(), &ibuf[4]);
|
|
for (int i = 0; i < 8; i++)
|
|
buf.push_back(ibuf[i]);
|
|
}
|
|
|
|
for (int i = 0; i < token_array.size(); i++) {
|
|
|
|
uint32_t token = token_array[i];
|
|
|
|
if (token & ~TOKEN_MASK) {
|
|
uint8_t buf4[4];
|
|
encode_uint32(token_array[i] | TOKEN_BYTE_MASK, &buf4[0]);
|
|
for (int j = 0; j < 4; j++) {
|
|
buf.push_back(buf4[j]);
|
|
}
|
|
} else {
|
|
buf.push_back(token);
|
|
}
|
|
}
|
|
|
|
return buf;
|
|
}
|
|
|
|
GDTokenizerBuffer::Token GDTokenizerBuffer::get_token(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
|
|
if (offset < 0 || offset >= tokens.size())
|
|
return TK_EOF;
|
|
|
|
return GDTokenizerBuffer::Token(tokens[offset] & TOKEN_MASK);
|
|
}
|
|
|
|
StringName GDTokenizerBuffer::get_token_identifier(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
|
|
ERR_FAIL_INDEX_V(offset, tokens.size(), StringName());
|
|
uint32_t identifier = tokens[offset] >> TOKEN_BITS;
|
|
ERR_FAIL_INDEX_V(identifier, identifiers.size(), StringName());
|
|
|
|
return identifiers[identifier];
|
|
}
|
|
|
|
GDFunctions::Function GDTokenizerBuffer::get_token_built_in_func(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
ERR_FAIL_INDEX_V(offset, tokens.size(), GDFunctions::FUNC_MAX);
|
|
return GDFunctions::Function(tokens[offset] >> TOKEN_BITS);
|
|
}
|
|
|
|
Variant::Type GDTokenizerBuffer::get_token_type(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
ERR_FAIL_INDEX_V(offset, tokens.size(), Variant::NIL);
|
|
|
|
return Variant::Type(tokens[offset] >> TOKEN_BITS);
|
|
}
|
|
|
|
int GDTokenizerBuffer::get_token_line(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
int pos = lines.find_nearest(offset);
|
|
|
|
if (pos < 0)
|
|
return -1;
|
|
if (pos >= lines.size())
|
|
pos = lines.size() - 1;
|
|
|
|
uint32_t l = lines.getv(pos);
|
|
return l & TOKEN_LINE_MASK;
|
|
}
|
|
int GDTokenizerBuffer::get_token_column(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
int pos = lines.find_nearest(offset);
|
|
if (pos < 0)
|
|
return -1;
|
|
if (pos >= lines.size())
|
|
pos = lines.size() - 1;
|
|
|
|
uint32_t l = lines.getv(pos);
|
|
return l >> TOKEN_LINE_BITS;
|
|
}
|
|
int GDTokenizerBuffer::get_token_line_indent(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
ERR_FAIL_INDEX_V(offset, tokens.size(), 0);
|
|
return tokens[offset] >> TOKEN_BITS;
|
|
}
|
|
const Variant &GDTokenizerBuffer::get_token_constant(int p_offset) const {
|
|
|
|
int offset = token + p_offset;
|
|
ERR_FAIL_INDEX_V(offset, tokens.size(), nil);
|
|
uint32_t constant = tokens[offset] >> TOKEN_BITS;
|
|
ERR_FAIL_INDEX_V(constant, constants.size(), nil);
|
|
return constants[constant];
|
|
}
|
|
String GDTokenizerBuffer::get_token_error(int p_offset) const {
|
|
|
|
ERR_FAIL_V(String());
|
|
}
|
|
|
|
void GDTokenizerBuffer::advance(int p_amount) {
|
|
|
|
ERR_FAIL_INDEX(p_amount + token, tokens.size());
|
|
token += p_amount;
|
|
}
|
|
GDTokenizerBuffer::GDTokenizerBuffer() {
|
|
|
|
token = 0;
|
|
}
|