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# dmd.visitor

Compiler implementation of the D programming language.
Authors:
Walter Bright
License:
Boost License 1.0

Source visitor.d

Documentation https://dlang.org/phobos/dmd_visitor.html

Coverage https://codecov.io/gh/dlang/dmd/src/master/src/dmd/visitor.d

class `Visitor`: dmd.parsetimevisitor.ParseTimeVisitor!(ASTCodegen).ParseTimeVisitor;
  Classic Visitor class which implements visit methods for all the AST nodes present in the compiler. The visit methods for AST nodes created at parse time are inherited while the visiting methods for AST nodes created at semantic time are implemented.
class `SemanticTimePermissiveVisitor`: dmd.visitor.Visitor;
  The PermissiveVisitor overrides the root AST nodes with empty visiting methods.
class `SemanticTimeTransitiveVisitor`: dmd.visitor.SemanticTimePermissiveVisitor;
  The TransitiveVisitor implements the AST traversal logic for all AST nodes.

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