8328fba68a
Retarget operator handling to the swift-syntax AST. Because Swift's grammar has no operator precedence, the parser front-end folds operator chains into nested `infixOperatorExpr`s (see swift-syntax-rs), so a single rule replaces the tree-sitter grammar's per-precedence binary rules (additive, multiplicative, comparison, equality, conjunction, disjunction, bitwise, range, nil-coalescing). The output is unchanged; only the input matching differs: - `binaryOperatorExpr` unwraps to the `infix_operator` leaf. - A `binaryOperator`-based `infixOperatorExpr` becomes `binary_expr`, or `compound_assign_expr` when the operator's spelling is a compound assignment — merging the tree-sitter grammar's separate binary and compound-assignment rules (the operator kinds are structurally identical, distinguishable only by spelling). - An `assignmentExpr`-based `infixOperatorExpr` becomes `assign_expr`. - An unresolved chain stays a flat `sequenceExpr` -> `unresolved_operator_sequence`. - `prefixOperatorExpr` -> prefix `unary_expr`; `tupleExpr` -> opaque `tuple_expr`; `codeBlock` -> `block`. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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