import SwiftSyntax
import SwiftSyntaxBuilder
import SwiftBasicFormat

class CodeGenerationFormat: BasicFormat {
  override var indentation: TriviaPiece { .spaces(indentationLevel * 2) }
}

let sourceFile = SourceFile {
    ImportDecl("import Foundation")
    VariableDecl("let url = URL(string: \"https://www.swift.org\")")
    VariableDecl("let content = try? String(contentsOf: url)")
}

print(sourceFile.formatted(using: CodeGenerationFormat()))

import Foundation
let url = URL(string: "https://www.swift.org")
let content = try ? String(contentsOf: url)
// main.swift:3:18 Consecutive statements on a line must be separated by ';'
// main.swift:3:19 Expected initial value after '='
// main.swift:3:19 Expected expression