98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
#include "knowledge_base.h"
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#include "lexer.h"
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#include "obelisk.h"
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#include "parser.h"
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#include <iomanip>
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#include <iostream>
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#include <limits>
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#include <memory>
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static int mainLoop()
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{
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auto parser = std::unique_ptr<obelisk::Parser> {new obelisk::Parser()};
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std::unique_ptr<obelisk::KnowledgeBase> kb;
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try
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{
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kb = std::unique_ptr<obelisk::KnowledgeBase> {
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new obelisk::KnowledgeBase("cromer.kb")};
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}
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catch (obelisk::KnowledgeBaseException& exception)
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{
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std::cout << exception.what() << std::endl;
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return EXIT_FAILURE;
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}
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// Prime the first token.
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fprintf(stderr, "ready> ");
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parser->getNextToken();
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while (true)
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{
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fprintf(stderr, "ready> ");
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switch (parser->getCurrentToken())
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{
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case obelisk::Lexer::kTokenEof :
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return EXIT_SUCCESS;
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case ';' : // ignore top-level semicolons.
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std::cout << "Identifier: "
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<< parser->getLexer()->getIdentifier() << std::endl;
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std::cout << "Num: " << parser->getLexer()->getNumberValue()
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<< std::endl;
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parser->getNextToken();
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break;
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case obelisk::Lexer::kTokenFact :
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parser->handleFact(kb);
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break;
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case obelisk::Lexer::kTokenRule :
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// parser->handleRule();
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break;
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case obelisk::Lexer::kTokenAction :
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// parser->handleAction();
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break;
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default :
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parser->getNextToken();
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break;
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}
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}
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return EXIT_SUCCESS;
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}
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int main(int argc, char** argv)
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{
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for (int i = 1; i < argc; i++)
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{
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std::cout << argv[i] << std::endl;
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}
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// This can be used to store a double as 2 floats in the database, then restore it back to a double.
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// Inspired by Godot's double precision on the GPU to render large worlds.
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/*try
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{
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float first;
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float second;
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double var = 0.123456789012345;
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obelisk::KnowledgeBase* kb = new obelisk::KnowledgeBase("cromer.kb");
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kb->getFloat(first, second, var);
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std::cout << std::setprecision(std::numeric_limits<double>::digits10)
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<< "Double: " << var << std::endl
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<< "First: " << first << std::endl
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<< "Second: " << second << std::endl;
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var = 0.0;
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kb->getDouble(var, first, second);
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std::cout << std::setprecision(std::numeric_limits<double>::digits10)
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<< "Double: " << var << std::endl
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<< "First: " << first << std::endl
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<< "Second: " << second << std::endl;
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}
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catch (obelisk::KnowledgeBaseException& exception)
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{
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return EXIT_FAILURE;
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}*/
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return mainLoop();
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}
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