forked from wa-lang/wa
41 lines
817 B
Go
41 lines
817 B
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package format_test
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import (
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"bytes"
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"fmt"
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"log"
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"wa-lang.org/wa/internal/format"
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"wa-lang.org/wa/internal/parser"
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"wa-lang.org/wa/internal/token"
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)
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func ExampleNode() {
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const expr = "(6+2*3)/4"
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// parser.ParseExpr parses the argument and returns the
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// corresponding ast.Node.
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node, err := parser.ParseExpr(expr)
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if err != nil {
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log.Fatal(err)
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}
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// Create a FileSet for node. Since the node does not come
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// from a real source file, fset will be empty.
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fset := token.NewFileSet()
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var buf bytes.Buffer
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err = format.Node(&buf, fset, node)
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if err != nil {
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log.Fatal(err)
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}
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fmt.Println(buf.String())
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// Output: (6 + 2*3) / 4
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}
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