Class CheckNoMutatedEs6Exports
- java.lang.Object
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- com.google.javascript.jscomp.lint.CheckNoMutatedEs6Exports
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- All Implemented Interfaces:
CompilerPass
,NodeTraversal.Callback
public final class CheckNoMutatedEs6Exports extends java.lang.Object implements NodeTraversal.Callback, CompilerPass
Checks that exports of ES6 modules are not mutated outside of module initialization.
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Field Summary
Fields Modifier and Type Field Description static DiagnosticType
MUTATED_EXPORT
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Constructor Summary
Constructors Constructor Description CheckNoMutatedEs6Exports(AbstractCompiler compiler)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
process(Node externs, Node root)
Process the JS with root node root.boolean
shouldTraverse(NodeTraversal t, Node n, Node parent)
Visits a node in preorder (before its children) and decides whether its children should be traversed.void
visit(NodeTraversal t, Node n, Node parent)
Visits a node in postorder (after its children).
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Field Detail
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MUTATED_EXPORT
public static final DiagnosticType MUTATED_EXPORT
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Constructor Detail
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CheckNoMutatedEs6Exports
public CheckNoMutatedEs6Exports(AbstractCompiler compiler)
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Method Detail
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visit
public void visit(NodeTraversal t, Node n, Node parent)
Description copied from interface:NodeTraversal.Callback
Visits a node in postorder (after its children). A node is visited in postorder iffNodeTraversal.Callback.shouldTraverse(NodeTraversal, Node, Node)
returned true for its parent. In particular, the root node is never visited in postorder.Siblings are always visited left-to-right.
Implementations can have side-effects (e.g. modify the parse tree). Removing the current node is legal, but removing or reordering nodes above the current node may cause nodes to be visited twice or not at all.
- Specified by:
visit
in interfaceNodeTraversal.Callback
- Parameters:
t
- The current traversal.n
- The current node.parent
- The parent of the current node.
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shouldTraverse
public boolean shouldTraverse(NodeTraversal t, Node n, Node parent)
Description copied from interface:NodeTraversal.Callback
Visits a node in preorder (before its children) and decides whether its children should be traversed. If the children should be traversed, they will be visited byNodeTraversal.Callback.shouldTraverse(NodeTraversal, Node, Node)
in preorder and byNodeTraversal.Callback.visit(NodeTraversal, Node, Node)
in postorder.Siblings are always visited left-to-right.
Implementations can have side-effects (e.g. modify the parse tree). Removing the current node is legal, but removing or reordering nodes above the current node may cause nodes to be visited twice or not at all.
- Specified by:
shouldTraverse
in interfaceNodeTraversal.Callback
- Parameters:
t
- The current traversal.n
- The current node.parent
- The parent of the current node.- Returns:
- whether the children of this node should be visited
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process
public void process(Node externs, Node root)
Description copied from interface:CompilerPass
Process the JS with root node root. Can modify the contents of each Node tree- Specified by:
process
in interfaceCompilerPass
- Parameters:
externs
- Top of external JS treeroot
- Top of JS tree
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