mirror of
https://github.com/hanzoai/expr.git
synced 2026-09-24 16:58:58 +00:00
Ryan BullockandGitHub
3bda06349a
* A bultin patcher providing interfaces for custom types that can be represented as standard go types for expressions. * Move node creation inside of loop. * Reorder imports. Fix some formatting. * Rename expr function from 'getExprValue' to '$patcher_value_getter'. * Move to expr-lang * Rename Patcher to ValueGetter * Remove use of Expr in naming * Rename interface functions to use 'AsType()' convention * Document motivation and an example use case * Add example usage to AsAny() * Move under patcher directory * Fix reference to old import path
43 lines
609 B
Go
43 lines
609 B
Go
package value_test
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import (
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"fmt"
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"github.com/expr-lang/expr"
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"github.com/expr-lang/expr/patcher/value"
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"github.com/expr-lang/expr/vm"
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)
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type myInt struct {
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Int int
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}
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func (v *myInt) AsInt() int {
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return v.Int
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}
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func (v *myInt) AsAny() any {
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return v.Int
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}
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func ExampleAnyValuer() {
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env := make(map[string]any)
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env["ValueOne"] = &myInt{1}
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env["ValueTwo"] = &myInt{2}
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program, err := expr.Compile("ValueOne + ValueTwo", expr.Env(env), value.ValueGetter)
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if err != nil {
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panic(err)
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}
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out, err := vm.Run(program, env)
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if err != nil {
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panic(err)
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}
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fmt.Println(out)
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// Output: 3
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}
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