71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
#ifndef __ANTHEM__TERM_VISITOR_H
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#define __ANTHEM__TERM_VISITOR_H
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#include <anthem/Utils.h>
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namespace anthem
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{
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////////////////////////////////////////////////////////////////////////////////////////////////////
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//
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// TermVisitor
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//
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////////////////////////////////////////////////////////////////////////////////////////////////////
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void throwErrorUnsupportedTerm(const char *statementType, const Clingo::AST::Term &term)
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{
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const auto errorMessage = std::string("“") + statementType + "” terms currently not supported";
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throwErrorAtLocation(term.location, errorMessage.c_str());
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throw std::runtime_error(errorMessage);
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////
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struct TermVisitor
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{
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void visit(const Clingo::Symbol &symbol, const Clingo::AST::Term &)
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{
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std::cout << symbol;
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}
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void visit(const Clingo::AST::Variable &, const Clingo::AST::Term &term)
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{
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throwErrorUnsupportedTerm("variable", term);
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}
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void visit(const Clingo::AST::UnaryOperation &, const Clingo::AST::Term &term)
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{
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throwErrorUnsupportedTerm("unary operation", term);
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}
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void visit(const Clingo::AST::BinaryOperation &, const Clingo::AST::Term &term)
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{
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throwErrorUnsupportedTerm("binary operation", term);
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}
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void visit(const Clingo::AST::Interval &, const Clingo::AST::Term &term)
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{
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throwErrorUnsupportedTerm("interval", term);
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}
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void visit(const Clingo::AST::Function &function, const Clingo::AST::Term &term)
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{
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std::cout << "[" << function.name << "]";
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throwErrorUnsupportedTerm("function", term);
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}
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void visit(const Clingo::AST::Pool &, const Clingo::AST::Term &term)
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{
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throwErrorUnsupportedTerm("pool", term);
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}
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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}
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#endif
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