FuncPrefixToFunctionsScope is a helper function to return the functions portion of the scope from a function prefix lookup. Basically this wraps the implementation in the Func interface in the *ExprFunc struct.
(prefix string)
| 47 | // portion of the scope from a function prefix lookup. Basically this wraps the |
| 48 | // implementation in the Func interface in the *ExprFunc struct. |
| 49 | func FuncPrefixToFunctionsScope(prefix string) map[string]interfaces.Expr { |
| 50 | fns := funcs.LookupPrefix(prefix) // map[string]func() interfaces.Func |
| 51 | exprs := make(map[string]interfaces.Expr) |
| 52 | for name, f := range fns { |
| 53 | |
| 54 | x := f() // inspect |
| 55 | // We can pass in Fns []*types.FuncValue for the simple and |
| 56 | // simplepoly API's and avoid the double wrapping from the |
| 57 | // simple/simplepoly API's to the main function api and back. |
| 58 | if st, ok := x.(*simple.WrappedFunc); simple.DirectInterface && ok { |
| 59 | fn := &ExprFunc{ |
| 60 | Title: name, |
| 61 | |
| 62 | Values: []*types.FuncValue{st.Fn}, // just one! |
| 63 | } |
| 64 | // XXX: should we run fn.SetType(st.Fn.Type()) ? |
| 65 | exprs[name] = fn |
| 66 | continue |
| 67 | } |
| 68 | |
| 69 | //if st, ok := x.(*simplepoly.WrappedFunc); simplepoly.DirectInterface && ok { |
| 70 | // fn := &ExprFunc{ |
| 71 | // Title: name, |
| 72 | |
| 73 | // Values: st.Fns, |
| 74 | // } |
| 75 | // exprs[name] = fn |
| 76 | // continue |
| 77 | //} |
| 78 | |
| 79 | fn := &ExprFunc{ |
| 80 | Title: name, |
| 81 | // We need to pass in the constructor function, because |
| 82 | // we'll need more than one copy of this function if it |
| 83 | // is used in more than one place so we can build more. |
| 84 | Function: f, // func() interfaces.Func |
| 85 | } |
| 86 | exprs[name] = fn |
| 87 | } |
| 88 | |
| 89 | // Wrap every Expr in ExprPoly, so that the function can be used with |
| 90 | // different types. Those functions are all builtins, so they don't need |
| 91 | // to access the surrounding scope. |
| 92 | exprPolys := make(map[string]interfaces.Expr) |
| 93 | for name, expr := range exprs { |
| 94 | exprPolys[name] = &ExprPoly{ |
| 95 | Definition: &ExprTopLevel{ |
| 96 | Definition: expr, |
| 97 | CapturedScope: interfaces.EmptyScope(), |
| 98 | }, |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | return exprPolys |
| 103 | } |
| 104 | |
| 105 | // VarPrefixToVariablesScope is a helper function to return the variables |
| 106 | // portion of the scope from a variable prefix lookup. Basically this is useful |