Johnni Winther
c6347389d2
This moves pattern variable assignments of fully matched expressions into the case body. This will help backends (dart2js in particular) to reason about the code flow. Closes #54115 Change-Id: I598a384a829f16e91ab2d6a309499cf20b9cc121 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/339122 Commit-Queue: Johnni Winther <johnniwinther@google.com> Reviewed-by: Jens Johansen <jensj@google.com>
67 lines
2.4 KiB
Plaintext
67 lines
2.4 KiB
Plaintext
library;
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import self as self;
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import "dart:core" as core;
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import "dart:math" as math;
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abstract sealed class Shape extends core::Object {
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synthetic constructor •() → self::Shape
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: super core::Object::•()
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;
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abstract method calculateArea() → core::double;
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}
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class Square extends core::Object implements self::Shape {
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final field core::double length;
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constructor •(core::double length) → self::Square
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: self::Square::length = length, super core::Object::•()
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;
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method calculateArea() → core::double
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return this.{self::Square::length}{core::double}.{core::double::*}(this.{self::Square::length}{core::double}){(core::num) → core::double};
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}
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class Circle extends core::Object implements self::Shape {
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final field core::double radius;
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constructor •(core::double radius) → self::Circle
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: self::Circle::radius = radius, super core::Object::•()
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;
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method calculateArea() → core::double
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return #C1.{core::double::*}(this.{self::Circle::radius}{core::double}){(core::num) → core::double}.{core::double::*}(this.{self::Circle::radius}{core::double}){(core::num) → core::double};
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}
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static method calculateArea(self::Shape shape) → core::double
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return block {
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core::double #t1;
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final synthesized self::Shape #0#0 = shape;
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#L1:
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{
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{
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hoisted core::double l;
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if(#0#0 is self::Square) {
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l = #0#0{self::Square}.{self::Square::length}{core::double};
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#t1 = l.{core::double::*}(l){(core::num) → core::double};
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break #L1;
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}
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}
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{
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hoisted core::double r;
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if(#0#0 is self::Circle) {
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r = #0#0{self::Circle}.{self::Circle::radius}{core::double};
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#t1 = #C1.{core::double::*}(r){(core::num) → core::double}.{core::double::*}(r){(core::num) → core::double};
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break #L1;
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}
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}
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}
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} =>#t1;
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static method main() → dynamic {
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self::Square s1 = new self::Square::•(2.0);
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self::expect(s1.{self::Square::calculateArea}(){() → core::double}, self::calculateArea(s1));
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self::Circle s2 = new self::Circle::•(3.0);
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self::expect(s2.{self::Circle::calculateArea}(){() → core::double}, self::calculateArea(s2));
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}
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static method expect(dynamic expected, dynamic actual) → dynamic {
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if(!(expected =={core::Object::==}{(core::Object) → core::bool} actual))
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throw "Expected ${expected}, actual ${actual}";
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}
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constants {
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#C1 = 3.141592653589793
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}
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