"BEGIN", "CHAR" => "CHAR", "ENDBlock" => "END", "EndContent" => "__end__", "ArrayLiteral" => "array", "ARef" => "aref", "ARefField" => "aref_field", "AryPtn" => "aryptn", "BodyStmt" => "bodystmt", "RAssign" => "rassign", "ClassDeclaration" => "class", "CVar" => "cvar", "EmbDoc" => "embdoc", "EmbExprBeg" => "embexpr_beg", "EmbExprEnd" => "embexpr_end", "EmbVar" => "embvar", "FCall" => "fcall", "FloatLiteral" => "float", "FndPtn" => "fndptn", "GVar" => "gvar", "HashLiteral" => "hash", "HshPtn" => "hshptn", "IVar" => "ivar", "KwRestParam" => "kwrest_param", "LBrace" => "lbrace", "LBracket" => "lbracket", "LParen" => "lparen", "MAssign" => "massign", "MLHS" => "mlhs", "MLHSParen" => "mlhs_paren", "ModuleDeclaration" => "module", "MRHS" => "mrhs", "QSymbols" => "qsymbols", "QSymbolsBeg" => "qsymbols_beg", "QWords" => "qwords", "QWordsBeg" => "qwords_beg", "RationalLiteral" => "rational", "RBrace" => "rbrace", "RBracket" => "rbracket", "RParen" => "rparen", "SClass" => "sclass", "StringDVar" => "string_dvar", "StringEmbExpr" => "string_embexpr", "TLambda" => "tlambda", "TLamBeg" => "tlambeg", "TStringBeg" => "tstring_beg", "TStringContent" => "tstring_content", "TStringEnd" => "tstring_end", "VCall" => "vcall", "XString" => "xstring", "XStringLiteral" => "xstring_literal", "ZSuper" => "zsuper" } NAMES.default_proc = -> (hash, key) do value = key.dup value.gsub!(/([A-Z\d]+)([A-Z][a-z])/, '\1_\2') value.gsub!(/([a-z\d])([A-Z])/, '\1_\2') value.tr!("-", "_") value.downcase! hash[key] = value end filepath = File.expand_path("../lib/syntax_tree/node.rb", __dir__) source = SyntaxTree.read(filepath) ast = SyntaxTree.parse(source) ast => SyntaxTree::Program[statements: { body: [*, SyntaxTree::ModuleDeclaration[bodystmt: { statements: { body: classes } }]] }] classes.each do |node| next unless node in SyntaxTree::ClassDeclaration[superclass: { value: { value: "Node" } }] body = node.bodystmt.statements.body index = body.index { _1 in SyntaxTree::Def[name: { value: "child_nodes" }] } index ||= body.length - 1 body.insert(index, SyntaxTree.parse(<<~RUBY).statements.body.first) def accept(visitor) visitor.visit_#{NAMES[node.constant.constant.value]}(self) end RUBY body[index].location.instance_variable_set(:@start_line, node.location.end_line) end NAMES.sort.to_h.each do |original, change| puts <<~RUBY # Visit a#{original.match?(/^[AEIOU]/) ? "n" : ""} #{original} node. alias visit_#{change} visit_child_nodes RUBY end formatter = SyntaxTree::Formatter.new(source, []) ast.format(formatter) formatter.flush File.write(filepath, formatter.output.join)">
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Merged
merged 2 commits into from
Apr 1, 2022
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Visitors #29

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15075db
Reformat node.rb
kddnewton Apr 1, 2022
2a914c9
More bespoke visitor pattern
kddnewton Apr 1, 2022
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