Author: Anthony Burzillo
A product of Peter Fröhlich's Spring 2013 Compilers and Interpreters class at Johns Hopkins.
In our implementation, the SIMPLE language is a statically typed, imperative language with a single basic data type INTEGER as well as two constructive data types ARRAY and RECORD.
Check out the the grammar for the language, some of the tests, or the class website for more information about the SIMPLE language.
Consider the iffy program in tests/iffy.sim which writes 0 to the screen:
PROGRAM iffy;
VAR x, y, z : INTEGER;
BEGIN
x := 6;
IF x MOD 200 >= 56 THEN
WRITE 1
ELSE
WRITE 0
END
END iffy.
Print out all the tokens in a program:
$ ./sc -s tests/iffy.sim
PROGRAM@1
identifier<iffy>@1
;@1
VAR@2
identifier<x>@2
,@2
identifier<y>@2
,@2
identifier<z>@2
:@2
identifier<INTEGER>@2
...
WRITE@8
integer<0>@8
END@9
END@10
identifier<iffy>@10
.@10Create a graphical representation of the symbol table (with dot installed):
$ ./sc -t tests/iffy.sim | dot -T jpeg > table.jpg
Create a graphical representation of the syntax tree (with dot installed):
$ ./sc -a tests/iffy.sim | dot -T jpeg > tree.jpg
Run the program in with the interpreter:
$ ./sc -i tests/iffy.sim
0Create lazy AMD64 assembly code and run:
$ ./sc -l tests/iffy.sim > iffy.s
$ gcc -o iffy iffy.s
$ ./iffy
0Create intermediate code:
$ ./sc -m tests/iffy.sim
Binary(mov): $6 -> !0
Assign: !0 -> x
Binary(mov): $200 -> !1
Division: x / !1
Binary(mov): $56 -> !2
Compare: >%rdx !2
Conditional Jump: >= goto Label: 4540158288
Binary(mov): $1 -> !3
Write: !3
Unconditional Jump: goto Label: 4540158416
Label: 4540158288
Binary(mov): $0 -> !4
Write: !4
Label: 4540158416Create the flow graph block representation of the program (with dot installed):
$ ./sc -f tests/iffy.sim | dot -T jpeg > flow_graph.jpg
This program runs all of the executables in tests/ and reports on any that fail to run. test can be given any option and that option will be run on each executable.
Run the testing suite:
$ ./test
$$ Test 'args' was successful.
$$ Test 'arrassi' was successful.
$$ Test 'read_in' was successful.
...
$$ Test 't2' was successful.
+++++++++++++++++++++++++++++++++++++++++++
27 tests were run with 27 succesful, 0 failed.
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