370 lines
16 KiB
C++
370 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 "../gdscript.h"
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#include "../gdscript_analyzer.h"
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#include "core/io/resource_loader.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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ERR_FAIL_COND_V_MSG(err != OK, err, "Failed to parse GDScript with GDScriptParser.");
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GDScriptAnalyzer analyzer(&parser);
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err = analyzer.analyze();
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ERR_FAIL_COND_V_MSG(err != OK, err, "Failed to analyze GDScript with GDScriptAnalyzer.");
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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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bool GDScriptEditorTranslationParserPlugin::_is_constant_string(const GDScriptParser::ExpressionNode *p_expression) {
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ERR_FAIL_NULL_V(p_expression, false);
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return p_expression->is_constant && (p_expression->reduced_value.get_type() == Variant::STRING || p_expression->reduced_value.get_type() == Variant::STRING_NAME);
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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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const 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<const GDScriptParser::VariableNode *>(statement)->initializer);
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break;
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case GDScriptParser::Node::IF: {
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const GDScriptParser::IfNode *if_node = static_cast<const 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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const GDScriptParser::ForNode *for_node = static_cast<const 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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const GDScriptParser::WhileNode *while_node = static_cast<const 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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const GDScriptParser::MatchNode *match_node = static_cast<const 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<const 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<const 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<const 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<const 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(const 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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const GDScriptParser::ArrayNode *array_node = static_cast<const 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<const GDScriptParser::AssignmentNode *>(p_expression));
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break;
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case GDScriptParser::Node::BINARY_OPERATOR: {
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const GDScriptParser::BinaryOpNode *binary_op_node = static_cast<const 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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const GDScriptParser::CallNode *call_node = static_cast<const 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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const GDScriptParser::DictionaryNode *dict_node = static_cast<const 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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const GDScriptParser::TernaryOpNode *ternary_op_node = static_cast<const 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(const 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<const GDScriptParser::IdentifierNode *>(p_assignment->assignee)->name;
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} else if (p_assignment->assignee->type == GDScriptParser::Node::SUBSCRIPT) {
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const GDScriptParser::SubscriptNode *subscript = static_cast<const GDScriptParser::SubscriptNode *>(p_assignment->assignee);
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if (subscript->is_attribute && subscript->attribute) {
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assignee_name = subscript->attribute->name;
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} else if (subscript->index && _is_constant_string(subscript->index)) {
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assignee_name = subscript->index->reduced_value;
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}
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}
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if (assignee_name != StringName() && assignment_patterns.has(assignee_name) && _is_constant_string(p_assignment->assigned_value)) {
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// If the assignment is towards one of the extract patterns (text, tooltip_text etc.), and the value is a constant string, we collect the string.
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ids->push_back(p_assignment->assigned_value->reduced_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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const GDScriptParser::CallNode *call_node = static_cast<const GDScriptParser::CallNode *>(p_assignment->assigned_value);
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if (!call_node->arguments.is_empty() && call_node->arguments[0]->type == GDScriptParser::Node::ARRAY) {
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const GDScriptParser::ArrayNode *array_node = static_cast<const 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_constant_strings(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 a constant string, 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(const 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 (_is_constant_string(p_call->arguments[i])) {
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id_ctx_plural.write[i] = p_call->arguments[i]->reduced_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 (_is_constant_string(p_call->arguments[indices[i]])) {
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id_ctx_plural.write[i] = p_call->arguments[indices[i]]->reduced_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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if (_is_constant_string(p_call->arguments[0])) {
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ids->push_back(p_call->arguments[0]->reduced_value);
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}
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} else if (second_arg_patterns.has(function_name)) {
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if (_is_constant_string(p_call->arguments[1])) {
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ids->push_back(p_call->arguments[1]->reduced_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_constant_strings(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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const GDScriptParser::CallNode *call_node = static_cast<const GDScriptParser::CallNode *>(p_call->arguments[0]);
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if (call_node->arguments[0]->type == GDScriptParser::Node::ARRAY) {
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const GDScriptParser::ArrayNode *array_node = static_cast<const 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_constant_strings(array_node->elements[i]);
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}
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}
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}
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if (p_call->callee && p_call->callee->type == GDScriptParser::Node::SUBSCRIPT) {
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const GDScriptParser::SubscriptNode *subscript_node = static_cast<const GDScriptParser::SubscriptNode *>(p_call->callee);
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if (subscript_node->base && subscript_node->base->type == GDScriptParser::Node::CALL) {
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const GDScriptParser::CallNode *call_node = static_cast<const GDScriptParser::CallNode *>(subscript_node->base);
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_extract_from_call(call_node);
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}
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}
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}
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void GDScriptEditorTranslationParserPlugin::_extract_fd_constant_strings(const GDScriptParser::ExpressionNode *p_expression) {
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// Extract the name in "extension ; name".
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if (_is_constant_string(p_expression)) {
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String arg_val = p_expression->reduced_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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