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Remove non-valued return

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(cherry picked from commit 42e515f43523ffbfe0b28c2f3f5c342e4d4b1c1d)
This commit is contained in:
Octavia Togami
2020-02-25 16:13:44 -08:00
committed by MattBDev
parent 8c385b0593
commit 6d9f30e6a6
4 changed files with 31 additions and 10 deletions
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6
worldedit-core/src/main/java/com/sk89q/worldedit/internal/expression/Expression.java
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@ -34,6 +34,8 @@ import java.time.Instant;
import java.util.List;
import java.util.Objects;
import static com.google.common.base.Preconditions.checkNotNull;
/**
* Compiles and evaluates expressions.
*
@ -119,7 +121,9 @@ public class Expression {
Instant deadline = Instant.now().plusMillis(timeout);
// evaluation exceptions are thrown out of this method
return compiledExpression.execute(new ExecutionData(slots, functions, deadline));
Double result = compiledExpression.execute(new ExecutionData(slots, functions, deadline));
checkNotNull(result, "Expression must result in a value");
return result;
}
public void optimize() {

9
worldedit-core/src/main/java/com/sk89q/worldedit/internal/expression/invoke/CompilingVisitor.java
View File

@ -227,19 +227,12 @@ class CompilingVisitor extends ExpressionBaseVisitor<MethodHandle> {
@Override
public MethodHandle visitReturnStatement(ExpressionParser.ReturnStatementContext ctx) {
// MH:returnValue = (ExecutionData)Double
MethodHandle returnValue;
if (ctx.value != null) {
returnValue = evaluate(ctx.value).handle;
} else {
returnValue = defaultResult();
}
return MethodHandles.filterArguments(
// take the (Double)Double return statement
RETURN_STATEMENT_BASE,
0,
// map the Double back to ExecutionData via the returnValue
returnValue
evaluate(ctx.value).handle
);
}