mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#include <libsolidity/lsp/DocumentHoverHandler.h>
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#include <libsolidity/lsp/Utils.h>
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#include <fmt/format.h>
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namespace solidity::lsp
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{
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using namespace std;
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using namespace solidity::lsp;
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using namespace solidity::langutil;
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using namespace solidity::frontend;
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namespace
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{
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struct MarkdownBuilder
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{
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stringstream result;
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MarkdownBuilder& solidityCode(string const& _code)
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{
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auto constexpr SolidityLanguageId = "solidity";
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result << "```" << SolidityLanguageId << '\n' << _code << "\n```\n\n";
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return *this;
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}
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MarkdownBuilder& paragraph(string const& _text)
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{
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if (!_text.empty())
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{
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result << _text << '\n';
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if (_text.back() != '\n') // We want double-LF to ensure constructing a paragraph.
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result << '\n';
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}
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return *this;
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}
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};
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}
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void DocumentHoverHandler::operator()(MessageID _id, Json::Value const& _args)
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{
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auto const [sourceUnitName, lineColumn] = HandlerBase(*this).extractSourceUnitNameAndLineColumn(_args);
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auto const [sourceNode, sourceOffset] = m_server.astNodeAndOffsetAtSourceLocation(sourceUnitName, lineColumn);
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MarkdownBuilder markdown{};
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auto rangeToHighlight = toRange(sourceNode->location());
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// Try getting the type definition of the underlying AST node, if available.
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if (auto const* expression = dynamic_cast<Expression const*>(sourceNode))
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{
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if (auto const* declaration = ASTNode::referencedDeclaration(*expression))
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if (declaration->type())
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markdown.solidityCode(declaration->type()->toString(false));
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}
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else if (auto const* declaration = dynamic_cast<Declaration const*>(sourceNode))
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{
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if (declaration->type())
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markdown.solidityCode(declaration->type()->toString(false));
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}
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else if (auto const* identifierPath = dynamic_cast<IdentifierPath const*>(sourceNode))
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{
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for (size_t i = 0; i < identifierPath->path().size(); ++i)
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{
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if (identifierPath->pathLocations()[i].containsOffset(sourceOffset))
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{
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rangeToHighlight = toRange(identifierPath->pathLocations()[i]);
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if (i < identifierPath->annotation().pathDeclarations.size())
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{
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Declaration const* declaration = identifierPath->annotation().pathDeclarations[i];
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if (declaration && declaration->type())
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markdown.solidityCode(declaration->type()->toString(false));
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if (auto const* structurallyDocumented = dynamic_cast<StructurallyDocumented const*>(declaration))
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if (structurallyDocumented->documentation()->text())
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markdown.paragraph(*structurallyDocumented->documentation()->text());
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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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// If this AST node contains documentation itself, append it.
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if (auto const* documented = dynamic_cast<StructurallyDocumented const*>(sourceNode))
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{
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if (documented->documentation())
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markdown.paragraph(*documented->documentation()->text());
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}
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auto tooltipText = markdown.result.str();
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if (tooltipText.empty())
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{
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client().reply(_id, Json::nullValue);
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return;
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}
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Json::Value reply = Json::objectValue;
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reply["range"] = rangeToHighlight;
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reply["contents"]["kind"] = "markdown";
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reply["contents"]["value"] = std::move(tooltipText);
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client().reply(_id, reply);
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}
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}
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