Proyecto-Titulo/obelisk
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Finished parsing facts

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This commit is contained in:
Martin Araneda 2022-11-09 16:49:58 -03:00
parent 2d8f697f73
commit 18cd9c5933
1 changed files with 49 additions and 12 deletions
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61
src/parser.cpp
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@ -293,7 +293,9 @@ std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::parseFact()
bool getEntity {true};
std::vector<std::string> leftEntities;
std::vector<std::string> rightEntities;
std::string entityName {""};
std::string verb {""};
getNextToken();
while (true) //left side of fact
{
@ -305,14 +307,24 @@ std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::parseFact()
{
// open a double quote
syntax.push('"');
getNextToken();
}
else if (syntax.top() == '"')
{
// close a double quote
syntax.pop();
leftEntities.push_back(entityName);
if (verb == "")
{
leftEntities.push_back(entityName);
}
else
{
rightEntities.push_back(entityName);
}
entityName = "";
getEntity = false;
getEntity = false;
getNextToken();
continue;
}
}
@ -328,25 +340,50 @@ std::unique_ptr<obelisk::ExpressionAST> obelisk::Parser::parseFact()
}
else
{
// and
if (getCurrentToken() == ')')
{
// TODO: throw an error if verb is empty
// TODO: throw an error if rightEntities has 0 elements
break;
}
if (getCurrentToken() == '"')
{
// TODO: throw and error because there is an unexpected double quote.
break;
}
if (getLexer()->getIdentifier() == "and")
{
getNextToken();
getEntity = true;
continue;
}
else
{
verb = getLexer()->getIdentifier();
getEntity = true;
continue;
}
}
/*if (getCurrentToken() == ')') // TODO: break if not string and not "and"
{
// TODO: save the verb
break;
}*/
}
return nullptr;
}
void handleAction()
void obelisk::Parser::handleAction()
{
}
void handleRule()
void obelisk::Parser::handleRule()
{
}
void handleFact()
void obelisk::Parser::handleFact()
{
parseFact();
}
void obelisk::Parser::insertFact()
{
}