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package file
import (
"bytes"
"fmt"
"go/format"
)
// Buffer for accumulating source code output.
type Buffer struct {
buf *bytes.Buffer
}
// Create a new source code text buffer.
func newBuffer() *Buffer {
return &Buffer{
buf: bytes.NewBuffer(nil),
}
}
// L accumulates a single line of source code.
func (b *Buffer) L(format string, a ...any) {
fmt.Fprintf(b.buf, format, a...)
b.N()
}
// N accumulates a single new line.
func (b *Buffer) N() {
fmt.Fprint(b.buf, "\n")
}
// Returns the source code to add to the target file.
func (b *Buffer) code() ([]byte, error) {
code, err := format.Source(b.buf.Bytes())
if err != nil {
return nil, fmt.Errorf("Can't format generated source code: %w", err)
}
return code, nil
}
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