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bistromathic: demonstrate caret-diagnostics

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* examples/c/bistromathic/parse.y (user_context): We need the current
line.
(yyreport_syntax_error): Quote the guilty line, with squiggles.
* examples/c/bistromathic/bistromathic.test: Adjust.
This commit is contained in:
Akim Demaille
2020-07-11 14:30:15 +02:00
parent c47e1174d4
commit dc72b3566d
6 changed files with 86 additions and 13 deletions
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46
examples/c/bistromathic/bistromathic.test
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@@ -101,14 +101,28 @@ cat >input <<EOF
EOF
run 0 '> *
> ''
err: 1.1: syntax error: expected end of file or - or ( or exit or number or function etc., before *'
err: 1.1: syntax error: expected end of file or - or ( or exit or number or function etc., before *
err: 1 | *
err: | ^'
# Underline long errors.
cat >input <<EOF
123 123456
EOF
run 0 '> 123 123456
> ''
err: 1.5-10: syntax error: expected end of file or + or - or * or / or ^ before number
err: 1 | 123 123456
err: | ^~~~~~'
cat >input <<EOF
1 + 2 * * 3
EOF
run 0 '> 1 + 2 * * 3
> ''
err: 1.9: syntax error: expected - or ( or number or function or variable before *'
err: 1.9: syntax error: expected - or ( or number or function or variable before *
err: 1 | 1 + 2 * * 3
err: | ^'
cat >input <<EOF
1 / 0
@@ -132,8 +146,14 @@ run 0 '> ((1 ++ 2) ** 3)
1332
> ''
err: 1.6: syntax error: expected - or ( or number or function or variable before +
err: 1 | ((1 ++ 2) ** 3)
err: | ^
err: 2.5: syntax error: expected - or ( or number or function or variable before +
err: 2.16: syntax error: expected - or ( or number or function or variable before *'
err: 2 | (1 ++ 2) + (3 ** 4)
err: | ^
err: 2.16: syntax error: expected - or ( or number or function or variable before *
err: 2 | (1 ++ 2) + (3 ** 4)
err: | ^'
# The rule "( error )" should work even if there are no tokens between "(" and ")".
cat >input <<EOF
@@ -142,7 +162,9 @@ EOF
run 0 '> ()
666
> ''
err: 1.2: syntax error: expected - or ( or number or function or variable before )'
err: 1.2: syntax error: expected - or ( or number or function or variable before )
err: 1 | ()
err: | ^'
cat >input <<EOF
@@ -189,6 +211,8 @@ err: LAC: checking lookahead function: S5
err: LAC: checking lookahead variable: S6
err: LAC: checking lookahead NEG: Err
err: 1.2: syntax error: expected - or ( or number or function or variable before +
err: 1 | (+_)
err: | ^
err: LAC: initial context discarded due to error recovery
err: Shifting token error (1.2: )
err: Entering state 10
@@ -286,7 +310,9 @@ run 0 '> (1+
( - atan cos exp ln number sin sqrt
> (1+
> ''
err: 1.4: syntax error: expected - or ( or number or function or variable before end of file'
err: 1.4: syntax error: expected - or ( or number or function or variable before end of file
err: 1 | (1+
err: | ^'
# Check the completion of a word.
sed -e 's/\\t/ /g' >input <<EOF
@@ -294,7 +320,9 @@ sed -e 's/\\t/ /g' >input <<EOF
EOF
run 0 '> (atan ( ''
> ''
err: 1.9: syntax error: expected - or ( or number or function or variable before end of file'
err: 1.9: syntax error: expected - or ( or number or function or variable before end of file
err: 1 | (atan ( ''
err: | ^'
# Check the completion at the very beginning.
sed -e 's/\\t/ /g' >input <<EOF
@@ -314,6 +342,8 @@ EOF
run -n 0 '> 1++ ''
> ''
err: 1.3: syntax error: expected - or ( or number or function or variable before +
err: 1 | 1++ ''
err: | ^
'
# And even when the error was recovered from.
@@ -323,5 +353,9 @@ EOF
run -n 0 '> (1++2) + 3 + ''
> ''
err: 1.4: syntax error: expected - or ( or number or function or variable before +
err: 1 | (1++2) + 3 + ''
err: | ^
err: 1.15: syntax error: expected - or ( or number or function or variable before end of file
err: 1 | (1++2) + 3 + ''
err: | ^
'