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Fix destructuring alternation

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Attempting to use the existing FORK_OPT opcode resulted in difficulty
knowing when to pop an error message off the stack and when not to. This
commit makes DESTRUCTURE_ALT a real opcode that is identical to
FORK_OPT, except for never pushing the error message onto the stack when
continuing from an error backtrack.

Some small changes were necessary to the DUP/POP behavior surrounding
destructuring to accomodate this.
This commit is contained in:
William Langford committed 2018-08-17 23:15:48 -04:00
1 parent 3dc5f4e948
commit 0673dee1b3
4 files changed
+122 -21
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tests/jq.test
+101
View File
@@ -726,6 +726,107 @@ null
[4, 5, null, null, 7, null]
[null, null, null, null, null, "foo"]
# Destructuring DUP/POP issues
.[] | . as {a:$a} ?// {a:$a} ?// {a:$a} | $a
[[3],[4],[5],6]
# Runtime error: "jq: Cannot index array with string \"c\""
.[] as {a:$a} ?// {a:$a} ?// {a:$a} | $a
[[3],[4],[5],6]
# Runtime error: "jq: Cannot index array with string \"c\""
[[3],[4],[5],6][] | . as {a:$a} ?// {a:$a} ?// {a:$a} | $a
null
# Runtime error: "jq: Cannot index array with string \"c\""
[[3],[4],[5],6] | .[] as {a:$a} ?// {a:$a} ?// {a:$a} | $a
null
# Runtime error: "jq: Cannot index array with string \"c\""
.[] | . as {a:$a} ?// {a:$a} ?// $a | $a
[[3],[4],[5],6]
[3]
[4]
[5]
6
.[] as {a:$a} ?// {a:$a} ?// $a | $a
[[3],[4],[5],6]
[3]
[4]
[5]
6
[[3],[4],[5],6][] | . as {a:$a} ?// {a:$a} ?// $a | $a
null
[3]
[4]
[5]
6
[[3],[4],[5],6] | .[] as {a:$a} ?// {a:$a} ?// $a | $a
null
[3]
[4]
[5]
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.[] | . as {a:$a} ?// $a ?// {a:$a} | $a
[[3],[4],[5],6]
[3]
[4]
[5]
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.[] as {a:$a} ?// $a ?// {a:$a} | $a
[[3],[4],[5],6]
[3]
[4]
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[[3],[4],[5],6][] | . as {a:$a} ?// $a ?// {a:$a} | $a
null
[3]
[4]
[5]
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[[3],[4],[5],6] | .[] as {a:$a} ?// $a ?// {a:$a} | $a
null
[3]
[4]
[5]
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.[] | . as $a ?// {a:$a} ?// {a:$a} | $a
[[3],[4],[5],6]
[3]
[4]
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.[] as $a ?// {a:$a} ?// {a:$a} | $a
[[3],[4],[5],6]
[3]
[4]
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[[3],[4],[5],6][] | . as $a ?// {a:$a} ?// {a:$a} | $a
null
[3]
[4]
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[[3],[4],[5],6] | .[] as $a ?// {a:$a} ?// {a:$a} | $a
null
[3]
[4]
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. as $dot|any($dot[];not)
[1,2,3,4,true,false,1,2,3,4,5]
true