Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: src/share/classes/com/sun/tools/javac/comp/Infer.java
src/share/classes/com/sun/tools/javac/comp/Infer.java
- changeset 716
- 493ecc8111ba
- parent 689
- 77cc34d5e548
- child 753
- 2536dedd897e
equal
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| 715:9bfb0e6fd526 | 716:493ecc8111ba |
|---|---|
| 551 } else { | 551 } else { |
| 552 //The return type for a polymorphic signature call is computed from | 552 //The return type for a polymorphic signature call is computed from |
| 553 //the enclosing tree E, as follows: if E is a cast, then use the | 553 //the enclosing tree E, as follows: if E is a cast, then use the |
| 554 //target type of the cast expression as a return type; if E is an | 554 //target type of the cast expression as a return type; if E is an |
| 555 //expression statement, the return type is 'void' - otherwise the | 555 //expression statement, the return type is 'void' - otherwise the |
| 556 //return type is simply 'Object'. | 556 //return type is simply 'Object'. A correctness check ensures that |
| 557 switch (env.outer.tree.getTag()) { | 557 //env.next refers to the lexically enclosing environment in which |
| 558 //the polymorphic signature call environment is nested. | |
| 559 | |
| 560 switch (env.next.tree.getTag()) { | |
| 558 case JCTree.TYPECAST: | 561 case JCTree.TYPECAST: |
| 559 restype = ((JCTypeCast)env.outer.tree).clazz.type; break; | 562 JCTypeCast castTree = (JCTypeCast)env.next.tree; |
| 563 restype = (castTree.expr == env.tree) ? | |
| 564 castTree.clazz.type : | |
| 565 syms.objectType; | |
| 566 break; | |
| 560 case JCTree.EXEC: | 567 case JCTree.EXEC: |
| 561 restype = syms.voidType; break; | 568 JCTree.JCExpressionStatement execTree = |
| 569 (JCTree.JCExpressionStatement)env.next.tree; | |
| 570 restype = (execTree.expr == env.tree) ? | |
| 571 syms.voidType : | |
| 572 syms.objectType; | |
| 573 break; | |
| 562 default: | 574 default: |
| 563 restype = syms.objectType; | 575 restype = syms.objectType; |
| 564 } | 576 } |
| 565 } | 577 } |
| 566 | 578 |
