StatementFusion (Compiler)

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com.google.javascript.jscomp
Class StatementFusion

java.lang.Object
  com.google.javascript.jscomp.StatementFusion

public class StatementFusion
extends Object
extends Object

Tries to fuse all the statements in a block into a one statement by using COMMAs. Because COMMAs has the lowest precedence, we never need to insert extra () around. Once we have only one statement in a block, we can then eliminate a pair of {}'s. Further more, we can also fold a single statement IF into && or create further opportunities for all the other goodies in PeepholeSubstituteAlternateSyntax.

Constructor Summary
`StatementFusion()`

Method Summary
`protected boolean`	`areNodesEqualForInlining(Node n1, Node n2)` Are the nodes equal for the purpose of inlining? If type aware optimizations are on, type equality is checked.
`protected void`	`error(DiagnosticType diagnostic, Node n)` Helper method for reporting an error to the compiler when applying a peephole optimization.
`protected boolean`	`isASTNormalized()` Is the current AST normalized? (e.g.
`protected void`	`reportCodeChange()` Helper method for telling the compiler that something has changed.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

StatementFusion

public StatementFusion()

Method Detail

error

protected void error(DiagnosticType diagnostic,
                     Node n)

Helper method for reporting an error to the compiler when applying a peephole optimization.

Parameters:: diagnostic - The error type; n - The node for which the error should be reported

reportCodeChange

protected void reportCodeChange()

Helper method for telling the compiler that something has changed. Subclasses must call these if they have changed the AST.

areNodesEqualForInlining

protected boolean areNodesEqualForInlining(Node n1,
                                           Node n2)

Are the nodes equal for the purpose of inlining? If type aware optimizations are on, type equality is checked.

isASTNormalized

protected boolean isASTNormalized()

Is the current AST normalized? (e.g. has the Normalize pass been run and has the Denormalize pass not yet been run?)