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annotate interpreter.cpp @ 6:1b575145197e

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interpreter is now a class instead of a namespace with functions
author John W. Eaton <jwe@octave.org>
date Thu, 23 May 2019 07:41:18 -0400
parents 0e154787183d
children 04867eba6428
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1 #include <iostream>
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2 #include <string>
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3
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4 #include <unistd.h>
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6 #include "interpreter.h"
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7 #include "parser.h"
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8
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9 #include "main.h"
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10 #include "gui-main.h"
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11 #include "tty-main.h"
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13 namespace calc
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14 {
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15 interpreter *interpreter::the_interpreter = nullptr;
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17 interpreter::interpreter (void)
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18 {
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19 if (the_interpreter)
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20 {
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21 std::cerr << "multiple interpreters are not possible!" << std::endl;
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22 exit (1);
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23 }
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25 the_interpreter = this;
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26
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27 parser::init ();
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28 }
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30 interpreter::~interpreter (void)
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31 {
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32 parser::fini ();
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33 }
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35 int interpreter::parse_and_execute (const std::string& line)
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36 {
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37 return parser::parse_and_execute (line);
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38 }
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39
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40 void interpreter::emit_result (double value)
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41 {
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42 // Simulate a delay in calculation.
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43 sleep (1);
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44
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45 if (calc::tty_mode)
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46 tty::emit_result (value);
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47 else
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48 gui::emit_result (value);
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49 }
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50
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51 void interpreter::emit_error (const char *msg)
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52 {
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53 if (calc::tty_mode)
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54 tty::emit_error (msg);
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55 else
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56 gui::emit_error (msg);
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57 }
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58 }