37 lines
714 B
Go
37 lines
714 B
Go
package saccharine
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import "strings"
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type stringifyVisitor struct {
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builder strings.Builder
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}
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func (v *stringifyVisitor) VisitVariable(a *Variable) {
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v.builder.WriteString(a.Name)
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}
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func (v *stringifyVisitor) VisitAbstraction(f *Abstraction) {
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v.builder.WriteRune('\\')
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v.builder.WriteString(strings.Join(f.Parameters, " "))
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v.builder.WriteRune('.')
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f.Body.Accept(v)
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}
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func (v *stringifyVisitor) VisitApplication(c *Application) {
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v.builder.WriteRune('(')
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c.Abstraction.Accept(v)
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for _, argument := range c.Arguments {
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v.builder.WriteRune(' ')
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argument.Accept(v)
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}
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v.builder.WriteRune(')')
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}
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func Stringify(n Node) string {
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b := &stringifyVisitor{}
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n.Accept(b)
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return b.builder.String()
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}
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