9b878c91eb
Reviewers: mislav.bradac, teon.banek Reviewed By: teon.banek Subscribers: pullbot Differential Revision: https://phabricator.memgraph.io/D1079
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
#include "console.hpp"
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#include <algorithm>
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#include <iostream>
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#include <iterator>
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#include <sstream>
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#include <vector>
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#include "communication/result_stream_faker.hpp"
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#include "query/exceptions.hpp"
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#include "query/interpreter.hpp"
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#include "query/typed_value.hpp"
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#include "utils/algorithm.hpp"
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#include "utils/exceptions.hpp"
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#ifdef HAS_READLINE
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#include "readline/history.h"
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#include "readline/readline.h"
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/**
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* Helper function that reads a line from the
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* standard input using the 'readline' lib.
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* Adds support for history and reverse-search.
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*
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* @param prompt The prompt to display.
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* @return A single command the user entered.
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* Possibly empty.
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*/
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std::string ReadLine(const char *prompt) {
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char *line = readline(prompt);
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if (!line) return "";
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if (*line) add_history(line);
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std::string r_val(line);
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free(line);
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return r_val;
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}
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#else
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std::string ReadLine(const char *prompt) {
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std::cout << prompt;
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std::string line;
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std::getline(std::cin, line);
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return line;
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}
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#endif // HAS_READLINE
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void query::Repl(GraphDb &db) {
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std::cout
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<< "Welcome to *Awesome* Memgraph Read Evaluate Print Loop (AM-REPL)"
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<< std::endl;
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while (true) {
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std::string command = ReadLine(">");
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if (command.size() == 0) continue;
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// special commands
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if (command == "quit") break;
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query::Interpreter interpeter;
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// regular cypher queries
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try {
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GraphDbAccessor dba(db);
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ResultStreamFaker results;
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interpeter(command, dba, {}, false).PullAll(results);
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std::cout << results;
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dba.Commit();
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} catch (const query::SyntaxException &e) {
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std::cout << "SYNTAX EXCEPTION: " << e.what() << std::endl;
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} catch (const query::LexingException &e) {
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std::cout << "LEXING EXCEPTION: " << e.what() << std::endl;
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} catch (const query::SemanticException &e) {
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std::cout << "SEMANTIC EXCEPTION: " << e.what() << std::endl;
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} catch (const query::QueryRuntimeException &e) {
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std::cout << "RUNTIME EXCEPTION: " << e.what() << std::endl;
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} catch (const query::TypedValueException &e) {
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std::cout << "TYPED VALUE EXCEPTION: " << e.what() << std::endl;
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} catch (const query::HintedAbortError &e) {
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std::cout << "HINTED ABORT ERROR: " << e.what() << std::endl;
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} catch (const utils::NotYetImplemented &e) {
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std::cout << e.what() << std::endl;
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}
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}
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}
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