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/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2015
* Parses and analyses the doc strings.
* Stores the parsing results in the AST annotations and reports errors.
*/
#include <libsolidity/analysis/DocStringAnalyser.h>
#include <libsolidity/ast/AST.h>
#include <libsolidity/parsing/DocStringParser.h>
using namespace std;
using namespace dev;
using namespace dev::solidity;
bool DocStringAnalyser::analyseDocStrings(SourceUnit const& _sourceUnit)
{
m_errorOccured = false;
_sourceUnit.accept(*this);
return !m_errorOccured;
}
bool DocStringAnalyser::visit(ContractDefinition const& _node)
{
static const set<string> validTags = set<string>{"author", "title", "dev", "notice", "why3"};
parseDocStrings(_node, _node.annotation(), validTags, "contracts");
return true;
}
bool DocStringAnalyser::visit(FunctionDefinition const& _node)
{
handleCallable(_node, _node, _node.annotation());
return true;
}
bool DocStringAnalyser::visit(ModifierDefinition const& _node)
{
handleCallable(_node, _node, _node.annotation());
return true;
}
bool DocStringAnalyser::visit(EventDefinition const& _node)
{
handleCallable(_node, _node, _node.annotation());
return true;
}
bool DocStringAnalyser::visitNode(ASTNode const& _node)
{
if (auto node = dynamic_cast<Statement const*>(&_node))
{
static const set<string> validTags = {"why3"};
parseDocStrings(*node, node->annotation(), validTags, "statements");
}
return true;
}
void DocStringAnalyser::handleCallable(
CallableDeclaration const& _callable,
Documented const& _node,
DocumentedAnnotation& _annotation
)
{
static const set<string> validTags = set<string>{"author", "dev", "notice", "return", "param", "why3"};
parseDocStrings(_node, _annotation, validTags, "functions");
set<string> validParams;
for (auto const& p: _callable.parameters())
validParams.insert(p->name());
if (_callable.returnParameterList())
for (auto const& p: _callable.returnParameterList()->parameters())
validParams.insert(p->name());
auto paramRange = _annotation.docTags.equal_range("param");
for (auto i = paramRange.first; i != paramRange.second; ++i)
if (!validParams.count(i->second.paramName))
appendError(
"Documented parameter \"" +
i->second.paramName +
"\" not found in the parameter list of the function."
);
}
void DocStringAnalyser::parseDocStrings(
Documented const& _node,
DocumentedAnnotation& _annotation,
set<string> const& _validTags,
string const& _nodeName
)
{
DocStringParser parser;
if (_node.documentation() && !_node.documentation()->empty())
{
if (!parser.parse(*_node.documentation(), m_errors))
m_errorOccured = true;
_annotation.docTags = parser.tags();
}
for (auto const& docTag: _annotation.docTags)
if (!_validTags.count(docTag.first))
appendError("Doc tag @" + docTag.first + " not valid for " + _nodeName + ".");
}
void DocStringAnalyser::appendError(string const& _description)
{
auto err = make_shared<Error>(Error::Type::DocstringParsingError);
*err << errinfo_comment(_description);
m_errors.push_back(err);
m_errorOccured = true;
}
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