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examples: lexcalc: demonstrate location tracking

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The bistromathic example should not use Flex, it makes it too complex.
But it was the only example to show location tracking with Flex.

* examples/c/lexcalc/lexcalc.test, examples/c/lexcalc/parse.y,
* examples/c/lexcalc/scan.l: Demonstrate location tracking as is done
in bistromathic.
This commit is contained in:
Akim Demaille
2020-02-29 09:54:34 +01:00
parent b870d5fee4
commit 388e12ac0f
8 changed files with 46 additions and 16 deletions
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7
examples/c/lexcalc/lexcalc.test
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@@ -29,4 +29,9 @@ run -noerr 0 9 -p
cat >input <<EOF
(1+2) *
EOF
run 1 'err: syntax error, unexpected end-of-line, expecting ( or number'
run 1 'err: 1.8-2.0: syntax error, unexpected end-of-line, expecting ( or number'
cat >input <<EOF
1 / (2 - 2)
EOF
run 1 'err: 1.1-11: error: division by zero"