Mercurial > jwe > qt-gui-with-push-parser
annotate tty-main.cpp @ 19:9e2211f5f293 default tip
NOTES: more updates
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 28 May 2019 23:06:08 -0400 |
| parents | 894be158b32d |
| children |
| rev | line source |
|---|---|
| 0 | 1 #include <iostream> |
| 2 #include <string> | |
| 3 | |
| 4 #include <cstdio> | |
| 5 #include <cstdlib> | |
| 6 | |
| 7 #include <readline/readline.h> | |
| 8 #include <readline/history.h> | |
| 9 | |
| 10 #include "tty-main.h" | |
| 11 | |
|
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new interpreter and qt_interpreter objects
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12 #include "interpreter.h" |
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0e154787183d
new interpreter and qt_interpreter objects
John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
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13 #include "parser.h" |
| 0 | 14 |
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822a2fe5bb51
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15 namespace calc |
| 0 | 16 { |
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parents:
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diff
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17 int tty_main (int, char **) |
| 0 | 18 { |
| 19 std::cout | |
| 20 << "Example Calculator.\n" | |
| 21 << "Available operations: + - * / ^ ()\n" | |
| 22 << "Semicolon terminates statement.\n" | |
| 23 << "GNU Readline available for history editing.\n" << std::endl; | |
| 24 | |
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interpreter is now a class instead of a namespace with functions
John W. Eaton <jwe@octave.org>
parents:
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25 calc::interpreter interp; |
| 0 | 26 |
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894be158b32d
define parser as a class and eliminate some global variables
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parents:
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diff
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27 calc::parser& parser = interp.get_parser (); |
|
894be158b32d
define parser as a class and eliminate some global variables
John W. Eaton <jwe@octave.org>
parents:
10
diff
changeset
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28 |
| 0 | 29 for (;;) |
| 30 { | |
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894be158b32d
define parser as a class and eliminate some global variables
John W. Eaton <jwe@octave.org>
parents:
10
diff
changeset
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31 char *tmp = readline (parser.beg_of_stmt () ? ">> " : ""); |
| 0 | 32 |
| 33 if (! tmp) | |
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print newline on EOF in tty mode
John W. Eaton <jwe@octave.org>
parents:
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diff
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34 { |
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69f5d5e42d2b
print newline on EOF in tty mode
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parents:
9
diff
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35 std::cout << "\n"; |
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69f5d5e42d2b
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parents:
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36 break; |
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69f5d5e42d2b
print newline on EOF in tty mode
John W. Eaton <jwe@octave.org>
parents:
9
diff
changeset
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37 } |
| 0 | 38 |
| 39 if (*tmp) | |
| 40 { | |
| 41 add_history (tmp); | |
| 42 using_history (); | |
| 43 } | |
| 44 | |
| 45 std::string line = tmp; | |
| 46 | |
| 47 free (tmp); | |
| 48 | |
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1b575145197e
interpreter is now a class instead of a namespace with functions
John W. Eaton <jwe@octave.org>
parents:
4
diff
changeset
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49 int status = interp.parse_and_execute (line); |
| 0 | 50 |
| 51 if (status < 0) | |
| 52 break; | |
| 53 } | |
| 54 | |
| 55 return 0; | |
| 56 } | |
| 57 } |