Module tidy_dispatch 

Shared tidy dispatch: maps CJC language method calls on TidyView / GroupedTidyView values to the concrete cjc_data API.

Both cjc-eval and cjc-mir-exec call into dispatch_tidy_method and dispatch_grouped_method so that every tidy operation has a single source of truth. The executors only need to pattern-match Value::TidyView or Value::GroupedTidyView and delegate here.

Error handling

All errors are returned as Err(String). The caller wraps the string into its own error type (EvalError / MirExecError).

Functions

build_arrange_key

Build an ArrangeKey struct value.

build_binop_expr

Build a DExpr binary operation.

build_col_expr

Build a Value::Struct { name: "DExpr", kind: "col", ... } from a column name.

build_tidy_agg

Build a TidyAgg struct value.

dataframe_to_value

Convert a DataFrame to the legacy Value::Struct { name: "DataFrame" } representation used by existing CJC code.

dispatch_grouped_method

Dispatch a method call on a Value::GroupedTidyView.

dispatch_tidy_builtin

Dispatch builder builtins like col(), desc(), asc(), sum(), mean(), etc. Returns Ok(Some(value)) if recognised, Ok(None) otherwise.

dispatch_tidy_method

Dispatch a method call on a Value::TidyView.

value_to_dexpr

Parse a Value::Struct { name: "DExpr", ... } into a DExpr.

wrap_grouped

Wrap a GroupedTidyView into Value::GroupedTidyView.

wrap_view

Wrap a TidyView into Value::TidyView.