Compiler/lexical analyzer: Difference between revisions
→{{header|ATS}}
Line 1,021:
=={{header|ATS}}==
One interesting feature of this implementation is my liberal use of a pushback buffer for input characters. This kept the code modular and easier to write.
<lang ATS>(********************************************************************)
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(********************************************************************)</lang>
{{out}}
<pre>$ patscc -O2 -DATS_MEMALLOC_GCBDW -o lex lex-in-ATS.dats -lgc && ./lex compiler-tests/testcase3.t
5 16 Keyword_print
5 40 Op_subtract
6 16 Keyword_putc
6 40 Op_less
7 16 Keyword_if
7 40 Op_greater
8 16 Keyword_else
8 40 Op_lessequal
9 16 Keyword_while
9 40 Op_greaterequal
10 16 LeftBrace
10 40 Op_equal
11 16 RightBrace
11 40 Op_notequal
12 16 LeftParen
12 40 Op_and
13 16 RightParen
13 40 Op_or
14 16 Op_subtract
14 40 Semicolon
15 16 Op_not
15 40 Comma
16 16 Op_multiply
16 40 Op_assign
17 16 Op_divide
17 40 Integer 42
18 16 Op_mod
18 40 String "String literal"
19 16 Op_add
19 40 Identifier variable_name
20 26 Integer 10
21 26 Integer 92
22 26 Integer 32
23 1 End_of_input</pre>
=={{header|AWK}}==
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