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LibSQL: Add better error handling to evaluate and execute methods

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There was a lot of `VERIFY_NOT_REACHED` error handling going on. Fixed
most of those.

A bit of a caveat is that after every `evaluate` call for expressions
that are part of a statement the error status of the `SQLResult` return
value must be called.
This commit is contained in:
Jan de Visser
2021-10-23 10:46:33 -04:00
committed by Andreas Kling
parent 0cfb5eec32
commit 9022cf99ff
Notes: sideshowbarker 2024-07-18 01:54:09 +09:00 
Author: https://github.com/JanDeVisser
Commit: https://github.com/SerenityOS/serenity/commit/9022cf99ffd
Pull-request: https://github.com/SerenityOS/serenity/pull/10598
Reviewed-by: https://github.com/trflynn89 ✅
5 changed files with 125 additions and 55 deletions
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4
Userland/Libraries/LibSQL/AST/Select.cpp
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@@ -39,12 +39,16 @@ RefPtr<SQLResult> Select::execute(ExecutionContext& context) const
context.current_row = &row;
if (where_clause()) {
auto where_result = where_clause()->evaluate(context);
if (context.result->has_error())
return context.result;
if (!where_result)
continue;
}
tuple.clear();
for (auto& col : columns) {
auto value = col.expression()->evaluate(context);
if (context.result->has_error())
return context.result;
tuple.append(value);
}
context.result->append(tuple);