Refactor Symbol and Keyword as nodes #67
Merged
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Refactor the previous implementation of
Symbol/Keywordhandling to treat them as first-class nodes in the build configuration.KeywordandSymbolrepresent identifiers (interned strings), not traditional AST nodes. However, the C parser defines them inrbs_node_type(asRBS_KEYWORDandRBS_AST_SYMBOL) and treats them as nodes (rbs_node_t*) in many contexts (lists, hashes).Instead of manually defining
RBSSymbol/RBSKeywordstructs, we now inject them into theconfig.ymlnode list inbuild.rs. This allows them to be generated asSymbolNode/KeywordNodevariants in theNodeenum, enabling polymorphic handling (in Node lists and Hashes)