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Yukihiro "Matz" Matsumoto
a4754c03b0
Replace cons-list based case statement implementation with variable-sized nodes for improved memory efficiency. The new implementation maintains identical register allocation behavior using the original's proven "nil-first, align-last" strategy. Key changes: - Convert new_case() to create variable-sized mrb_ast_case_node directly - Replace codegen_case() with gen_case_var() using array iteration - Apply original register allocation logic to new node structure - Fix else clause handling in jump dispatch logic Supports all case statement variants: - Bare case statements (case when condition) - Case with values (case expr when condition) - UPVAR combinations with closure variables - Splat operations (*case) Co-Authored-By: Claude <noreply@anthropic.com>