Exceptions/Catch an exception thrown in a nested call: Difference between revisions
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(→{{header|Lasso}}: Output?) |
(→{{header|Lasso}}: Added stdout to code and output to example.) |
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=={{header|Lasso}}== |
=={{header|Lasso}}== |
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{{output?|Lasso}} |
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Lasso currently does not currently have a try mechanic — but we can easily add one like so. |
Lasso currently does not currently have a try mechanic — but we can easily add one like so. |
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handle => { |
handle => { |
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// Only relay error if it's not the specified exception |
// Only relay error if it's not the specified exception |
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#error |
if(#error) => { |
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if(#error->get(2) == #exception) => { |
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stdoutnl('Handled exception: '+#error->get(2)) |
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else |
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stdoutnl('Throwing exception: '+#error->get(2)) |
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fail(:#error) |
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} |
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} |
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} |
} |
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protect => { |
protect => { |
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define foo => { |
define foo => { |
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stdoutnl('foo') |
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try('U0') => { bar } |
try('U0') => { bar } |
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try('U0') => { bar } |
try('U0') => { bar } |
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define bar => { |
define bar => { |
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stdoutnl('- bar') |
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baz() |
baz() |
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} |
} |
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define baz => { |
define baz => { |
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stdoutnl(' - baz') |
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var(bazzed) ? fail('U1') | $bazzed = true |
var(bazzed) ? fail('U1') | $bazzed = true |
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fail('U0') |
fail('U0') |
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}</lang> |
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} |
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Output: |
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<lang Lasso>foo |
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- bar |
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- baz |
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Handled exception: U0 |
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- bar |
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- baz |
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Throwing exception: U1</lang> |
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Error Stack: |
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<lang Lasso>U1 |
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13:2 error.lasso |
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38:19 Debugger |
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33:5 Debugger |
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28:20 Debugger |
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21:9 Debugger |
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18:9 Debugger |
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6:5 Debugger</lang> |
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=={{header|Lua}}== |
=={{header|Lua}}== |
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