[Pratt Parser] Optimize call stack depth via in-place AST mutation and lean dispatch - #2208
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…d lean dispatch - In-place AST mutation in binary/ternary operations: - Updated some Parse* functions to accept ExprNode& lhs and mutate lhs in place instead of returning ExprNode by value. - Eliminated some intermediate named temporary rhs stack variables. - Lean ParseUnary and ParsePrimary dispatch: - Extracted prefix operator parsing (!, -) into ParseUnaryOps(), making ParseUnary() a fast single branch for standard non-prefix expressions. PiperOrigin-RevId: 963785455
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[Pratt Parser] Optimize call stack depth via in-place AST mutation and lean dispatch