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42 lines
1 KiB
Markdown
42 lines
1 KiB
Markdown
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[](https://goreportcard.com/report/github.com/go-toolsmith/astcopy)
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[](https://godoc.org/github.com/go-toolsmith/astcopy)
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[](https://travis-ci.org/go-toolsmith/astcopy)
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# astcopy
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Package astcopy implements Go AST reflection-free deep copy operations.
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## Installation:
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```bash
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go get github.com/go-toolsmith/astcopy
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```
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## Example
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```go
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package main
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import (
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"fmt"
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"go/ast"
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"go/token"
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"github.com/go-toolsmith/astcopy"
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"github.com/go-toolsmith/astequal"
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"github.com/go-toolsmith/strparse"
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)
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func main() {
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x := strparse.Expr(`1 + 2`).(*ast.BinaryExpr)
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y := astcopy.BinaryExpr(x)
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fmt.Println(astequal.Expr(x, y)) // => true
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// Now modify x and make sure y is not modified.
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z := astcopy.BinaryExpr(y)
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x.Op = token.SUB
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fmt.Println(astequal.Expr(y, z)) // => true
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fmt.Println(astequal.Expr(x, y)) // => false
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}
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```
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