mirror of
https://github.com/godotengine/godot
synced 2024-07-20 07:37:31 +00:00
d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
352 lines
16 KiB
C++
352 lines
16 KiB
C++
/**************************************************************************/
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/* gdscript_translation_parser_plugin.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 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 "gdscript_translation_parser_plugin.h"
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#include "core/io/resource_loader.h"
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#include "modules/gdscript/gdscript.h"
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void GDScriptEditorTranslationParserPlugin::get_recognized_extensions(List<String> *r_extensions) const {
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GDScriptLanguage::get_singleton()->get_recognized_extensions(r_extensions);
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}
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Error GDScriptEditorTranslationParserPlugin::parse_file(const String &p_path, Vector<String> *r_ids, Vector<Vector<String>> *r_ids_ctx_plural) {
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// Extract all translatable strings using the parsed tree from GDSriptParser.
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// The strategy is to find all ExpressionNode and AssignmentNode from the tree and extract strings if relevant, i.e
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// Search strings in ExpressionNode -> CallNode -> tr(), set_text(), set_placeholder() etc.
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// Search strings in AssignmentNode -> text = "__", tooltip_text = "__" etc.
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Error err;
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Ref<Resource> loaded_res = ResourceLoader::load(p_path, "", ResourceFormatLoader::CACHE_MODE_REUSE, &err);
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if (err) {
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ERR_PRINT("Failed to load " + p_path);
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return err;
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}
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ids = r_ids;
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ids_ctx_plural = r_ids_ctx_plural;
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Ref<GDScript> gdscript = loaded_res;
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String source_code = gdscript->get_source_code();
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GDScriptParser parser;
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err = parser.parse(source_code, p_path, false);
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if (err != OK) {
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ERR_PRINT("Failed to parse with GDScript with GDScriptParser.");
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return err;
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}
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// Traverse through the parsed tree from GDScriptParser.
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GDScriptParser::ClassNode *c = parser.get_tree();
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_traverse_class(c);
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return OK;
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}
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void GDScriptEditorTranslationParserPlugin::_traverse_class(const GDScriptParser::ClassNode *p_class) {
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for (int i = 0; i < p_class->members.size(); i++) {
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const GDScriptParser::ClassNode::Member &m = p_class->members[i];
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// There are 7 types of Member, but only class, function and variable can contain translatable strings.
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switch (m.type) {
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case GDScriptParser::ClassNode::Member::CLASS:
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_traverse_class(m.m_class);
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break;
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case GDScriptParser::ClassNode::Member::FUNCTION:
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_traverse_function(m.function);
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break;
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case GDScriptParser::ClassNode::Member::VARIABLE:
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_read_variable(m.variable);
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break;
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default:
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break;
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}
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}
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}
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void GDScriptEditorTranslationParserPlugin::_traverse_function(const GDScriptParser::FunctionNode *p_func) {
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_traverse_block(p_func->body);
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}
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void GDScriptEditorTranslationParserPlugin::_read_variable(const GDScriptParser::VariableNode *p_var) {
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_assess_expression(p_var->initializer);
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}
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void GDScriptEditorTranslationParserPlugin::_traverse_block(const GDScriptParser::SuiteNode *p_suite) {
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if (!p_suite) {
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return;
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}
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const Vector<GDScriptParser::Node *> &statements = p_suite->statements;
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for (int i = 0; i < statements.size(); i++) {
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GDScriptParser::Node *statement = statements[i];
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// Statements with Node type constant, break, continue, pass, breakpoint are skipped because they can't contain translatable strings.
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switch (statement->type) {
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case GDScriptParser::Node::VARIABLE:
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_assess_expression(static_cast<GDScriptParser::VariableNode *>(statement)->initializer);
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break;
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case GDScriptParser::Node::IF: {
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GDScriptParser::IfNode *if_node = static_cast<GDScriptParser::IfNode *>(statement);
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_assess_expression(if_node->condition);
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//FIXME : if the elif logic is changed in GDScriptParser, then this probably will have to change as well. See GDScriptParser::TreePrinter::print_if().
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_traverse_block(if_node->true_block);
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_traverse_block(if_node->false_block);
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break;
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}
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case GDScriptParser::Node::FOR: {
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GDScriptParser::ForNode *for_node = static_cast<GDScriptParser::ForNode *>(statement);
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_assess_expression(for_node->list);
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_traverse_block(for_node->loop);
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break;
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}
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case GDScriptParser::Node::WHILE: {
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GDScriptParser::WhileNode *while_node = static_cast<GDScriptParser::WhileNode *>(statement);
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_assess_expression(while_node->condition);
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_traverse_block(while_node->loop);
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break;
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}
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case GDScriptParser::Node::MATCH: {
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GDScriptParser::MatchNode *match_node = static_cast<GDScriptParser::MatchNode *>(statement);
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_assess_expression(match_node->test);
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for (int j = 0; j < match_node->branches.size(); j++) {
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_traverse_block(match_node->branches[j]->block);
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}
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break;
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}
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case GDScriptParser::Node::RETURN:
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_assess_expression(static_cast<GDScriptParser::ReturnNode *>(statement)->return_value);
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break;
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case GDScriptParser::Node::ASSERT:
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_assess_expression((static_cast<GDScriptParser::AssertNode *>(statement))->condition);
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break;
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case GDScriptParser::Node::ASSIGNMENT:
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_assess_assignment(static_cast<GDScriptParser::AssignmentNode *>(statement));
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break;
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default:
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if (statement->is_expression()) {
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_assess_expression(static_cast<GDScriptParser::ExpressionNode *>(statement));
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}
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break;
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}
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}
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}
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void GDScriptEditorTranslationParserPlugin::_assess_expression(GDScriptParser::ExpressionNode *p_expression) {
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// Explore all ExpressionNodes to find CallNodes which contain translation strings, such as tr(), set_text() etc.
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// tr() can be embedded quite deep within multiple ExpressionNodes so need to dig down to search through all ExpressionNodes.
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if (!p_expression) {
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return;
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}
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// ExpressionNode of type await, cast, get_node, identifier, literal, preload, self, subscript, unary are ignored as they can't be CallNode
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// containing translation strings.
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switch (p_expression->type) {
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case GDScriptParser::Node::ARRAY: {
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GDScriptParser::ArrayNode *array_node = static_cast<GDScriptParser::ArrayNode *>(p_expression);
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for (int i = 0; i < array_node->elements.size(); i++) {
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_assess_expression(array_node->elements[i]);
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}
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break;
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}
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case GDScriptParser::Node::ASSIGNMENT:
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_assess_assignment(static_cast<GDScriptParser::AssignmentNode *>(p_expression));
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break;
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case GDScriptParser::Node::BINARY_OPERATOR: {
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GDScriptParser::BinaryOpNode *binary_op_node = static_cast<GDScriptParser::BinaryOpNode *>(p_expression);
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_assess_expression(binary_op_node->left_operand);
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_assess_expression(binary_op_node->right_operand);
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break;
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}
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case GDScriptParser::Node::CALL: {
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GDScriptParser::CallNode *call_node = static_cast<GDScriptParser::CallNode *>(p_expression);
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_extract_from_call(call_node);
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for (int i = 0; i < call_node->arguments.size(); i++) {
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_assess_expression(call_node->arguments[i]);
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}
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} break;
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case GDScriptParser::Node::DICTIONARY: {
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GDScriptParser::DictionaryNode *dict_node = static_cast<GDScriptParser::DictionaryNode *>(p_expression);
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for (int i = 0; i < dict_node->elements.size(); i++) {
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_assess_expression(dict_node->elements[i].key);
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_assess_expression(dict_node->elements[i].value);
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}
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break;
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}
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case GDScriptParser::Node::TERNARY_OPERATOR: {
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GDScriptParser::TernaryOpNode *ternary_op_node = static_cast<GDScriptParser::TernaryOpNode *>(p_expression);
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_assess_expression(ternary_op_node->condition);
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_assess_expression(ternary_op_node->true_expr);
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_assess_expression(ternary_op_node->false_expr);
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break;
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}
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default:
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break;
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}
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}
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void GDScriptEditorTranslationParserPlugin::_assess_assignment(GDScriptParser::AssignmentNode *p_assignment) {
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// Extract the translatable strings coming from assignments. For example, get_node("Label").text = "____"
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StringName assignee_name;
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if (p_assignment->assignee->type == GDScriptParser::Node::IDENTIFIER) {
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assignee_name = static_cast<GDScriptParser::IdentifierNode *>(p_assignment->assignee)->name;
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} else if (p_assignment->assignee->type == GDScriptParser::Node::SUBSCRIPT) {
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assignee_name = static_cast<GDScriptParser::SubscriptNode *>(p_assignment->assignee)->attribute->name;
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}
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if (assignment_patterns.has(assignee_name) && p_assignment->assigned_value->type == GDScriptParser::Node::LITERAL) {
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// If the assignment is towards one of the extract patterns (text, tooltip_text etc.), and the value is a string literal, we collect the string.
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ids->push_back(static_cast<GDScriptParser::LiteralNode *>(p_assignment->assigned_value)->value);
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} else if (assignee_name == fd_filters && p_assignment->assigned_value->type == GDScriptParser::Node::CALL) {
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// FileDialog.filters accepts assignment in the form of PackedStringArray. For example,
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// get_node("FileDialog").filters = PackedStringArray(["*.png ; PNG Images","*.gd ; GDScript Files"]).
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GDScriptParser::CallNode *call_node = static_cast<GDScriptParser::CallNode *>(p_assignment->assigned_value);
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if (call_node->arguments[0]->type == GDScriptParser::Node::ARRAY) {
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GDScriptParser::ArrayNode *array_node = static_cast<GDScriptParser::ArrayNode *>(call_node->arguments[0]);
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// Extract the name in "extension ; name" of PackedStringArray.
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for (int i = 0; i < array_node->elements.size(); i++) {
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_extract_fd_literals(array_node->elements[i]);
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}
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}
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} else {
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// If the assignee is not in extract patterns or the assigned_value is not Literal type, try to see if the assigned_value contains tr().
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_assess_expression(p_assignment->assigned_value);
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}
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}
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void GDScriptEditorTranslationParserPlugin::_extract_from_call(GDScriptParser::CallNode *p_call) {
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// Extract the translatable strings coming from function calls. For example:
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// tr("___"), get_node("Label").set_text("____"), get_node("LineEdit").set_placeholder("____").
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StringName function_name = p_call->function_name;
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// Variables for extracting tr() and tr_n().
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Vector<String> id_ctx_plural;
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id_ctx_plural.resize(3);
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bool extract_id_ctx_plural = true;
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if (function_name == tr_func) {
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// Extract from tr(id, ctx).
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for (int i = 0; i < p_call->arguments.size(); i++) {
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if (p_call->arguments[i]->type == GDScriptParser::Node::LITERAL) {
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id_ctx_plural.write[i] = static_cast<GDScriptParser::LiteralNode *>(p_call->arguments[i])->value;
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} else {
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// Avoid adding something like tr("Flying dragon", var_context_level_1). We want to extract both id and context together.
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extract_id_ctx_plural = false;
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}
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}
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if (extract_id_ctx_plural) {
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ids_ctx_plural->push_back(id_ctx_plural);
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}
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} else if (function_name == trn_func) {
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// Extract from tr_n(id, plural, n, ctx).
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Vector<int> indices;
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indices.push_back(0);
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indices.push_back(3);
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indices.push_back(1);
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for (int i = 0; i < indices.size(); i++) {
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if (indices[i] >= p_call->arguments.size()) {
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continue;
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}
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if (p_call->arguments[indices[i]]->type == GDScriptParser::Node::LITERAL) {
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id_ctx_plural.write[i] = static_cast<GDScriptParser::LiteralNode *>(p_call->arguments[indices[i]])->value;
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} else {
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extract_id_ctx_plural = false;
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}
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}
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if (extract_id_ctx_plural) {
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ids_ctx_plural->push_back(id_ctx_plural);
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}
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} else if (first_arg_patterns.has(function_name)) {
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// Extracting argument with only string literals. In other words, not extracting something like set_text("hello " + some_var).
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if (p_call->arguments[0]->type == GDScriptParser::Node::LITERAL) {
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ids->push_back(static_cast<GDScriptParser::LiteralNode *>(p_call->arguments[0])->value);
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}
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} else if (second_arg_patterns.has(function_name)) {
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if (p_call->arguments[1]->type == GDScriptParser::Node::LITERAL) {
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ids->push_back(static_cast<GDScriptParser::LiteralNode *>(p_call->arguments[1])->value);
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}
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} else if (function_name == fd_add_filter) {
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// Extract the 'JPE Images' in this example - get_node("FileDialog").add_filter("*.jpg; JPE Images").
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_extract_fd_literals(p_call->arguments[0]);
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} else if (function_name == fd_set_filter && p_call->arguments[0]->type == GDScriptParser::Node::CALL) {
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// FileDialog.set_filters() accepts assignment in the form of PackedStringArray. For example,
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// get_node("FileDialog").set_filters( PackedStringArray(["*.png ; PNG Images","*.gd ; GDScript Files"])).
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GDScriptParser::CallNode *call_node = static_cast<GDScriptParser::CallNode *>(p_call->arguments[0]);
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if (call_node->arguments[0]->type == GDScriptParser::Node::ARRAY) {
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GDScriptParser::ArrayNode *array_node = static_cast<GDScriptParser::ArrayNode *>(call_node->arguments[0]);
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for (int i = 0; i < array_node->elements.size(); i++) {
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_extract_fd_literals(array_node->elements[i]);
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}
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}
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}
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}
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void GDScriptEditorTranslationParserPlugin::_extract_fd_literals(GDScriptParser::ExpressionNode *p_expression) {
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// Extract the name in "extension ; name".
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if (p_expression->type == GDScriptParser::Node::LITERAL) {
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String arg_val = String(static_cast<GDScriptParser::LiteralNode *>(p_expression)->value);
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PackedStringArray arr = arg_val.split(";", true);
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if (arr.size() != 2) {
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ERR_PRINT("Argument for setting FileDialog has bad format.");
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return;
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}
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ids->push_back(arr[1].strip_edges());
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}
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}
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GDScriptEditorTranslationParserPlugin::GDScriptEditorTranslationParserPlugin() {
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assignment_patterns.insert("text");
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assignment_patterns.insert("placeholder_text");
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assignment_patterns.insert("tooltip_text");
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first_arg_patterns.insert("set_text");
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first_arg_patterns.insert("set_tooltip_text");
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first_arg_patterns.insert("set_placeholder");
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first_arg_patterns.insert("add_tab");
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first_arg_patterns.insert("add_check_item");
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first_arg_patterns.insert("add_item");
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first_arg_patterns.insert("add_multistate_item");
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first_arg_patterns.insert("add_radio_check_item");
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first_arg_patterns.insert("add_separator");
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first_arg_patterns.insert("add_submenu_item");
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second_arg_patterns.insert("set_tab_title");
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second_arg_patterns.insert("add_icon_check_item");
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second_arg_patterns.insert("add_icon_item");
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second_arg_patterns.insert("add_icon_radio_check_item");
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second_arg_patterns.insert("set_item_text");
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}
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