Johnni Winther
13c4ad23c5
This adds the static type of the switch statement expression to the AST to better support optimizations based on the possible runtime values of the switch expression. TEST=existing Change-Id: Ief35b687150401100d8c96721a026e9f0911b3b4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/301063 Reviewed-by: Alexander Markov <alexmarkov@google.com> Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Jens Johansen <jensj@google.com> Reviewed-by: Mayank Patke <fishythefish@google.com>
23 lines
849 B
Plaintext
23 lines
849 B
Plaintext
library /*isNonNullableByDefault*/;
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//
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// Problems in library:
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//
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// pkg/front_end/testcases/patterns/switchExpression_empty.dart:5:16: Error: The type 'dynamic' is not exhaustively matched by the switch cases since it doesn't match 'Object()'.
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// Try adding a wildcard pattern or cases that match 'Object()'.
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// f(x) => switch(x) {};
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// ^
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//
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import self as self;
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import "dart:_internal" as _in;
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static method f(dynamic x) → dynamic
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return let final Never #t1 = block {
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Never #t2;
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#L1:
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switch(x) /* isExplicitlyExhaustive, dynamic */ {
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#L2:
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default:
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throw new _in::ReachabilityError::•("`null` encountered as case in a switch expression with a non-nullable type.");
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}
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} =>#t2 in throw new _in::ReachabilityError::•("`null` encountered as the result from expression with type `Never`.");
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