𝐖𝐡𝐚𝐭 𝐢𝐬 𝕘𝕠-𝕞𝕒𝕥𝕔𝕙𝕖𝕣

MkPattern make pattern from MatchFun.

MkVar make variable for binding matched Node.

PatternOf make pattern from ast.Node.

TryGetMatchFun get MatchFun from pattern if T is NodePattern, n must be ast.Node if T is StmtPattern, n must be ast.Stmt if T is ExprPattern, n must be ast.Expr if T is DeclPattern, n must be ast.Decl if T is SpecPattern, n must be ast.Spec if T is IdentPattern, n must be *ast.Ident if T is FieldPattern, n must be *ast.Field if T is FieldListPattern, n must be *ast.FieldList if T is CallExprPattern, n must be *ast.CallExpr if T is FuncTypePattern, n must be *ast.FuncType if T is BlockStmtPattern, n must be *ast.BlockStmt if T is TokenPattern, n must be token.Token if T is BasicLitPattern, n must be *ast.BasicLit if T is StmtsPattern, n must be []ast.Stmt if T is ExprsPattern, n must be []ast.Expr if T is SpecsPattern, n must be []ast.Spec if T is IdentsPattern, n must be []*ast.Ident if T is FieldsPattern, n must be []*ast.Field.