1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2023 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import ArgumentParser
import SwiftBasicFormat
import SwiftDiagnostics
import SwiftParser
import SwiftParserDiagnostics
import SwiftSyntax
struct BasicFormat: ParsableCommand, ParseCommand {
enum Error: Swift.Error, CustomStringConvertible {
case unknownSyntaxNodeType(nodeType: String, parsableTypes: [String])
var description: String {
switch self {
case .unknownSyntaxNodeType(nodeType: let nodeType, parsableTypes: let parsableTypes):
return """
'\(nodeType)' is not a SwiftSyntax node type that conforms to SyntaxParsable. Possible options are:
\(parsableTypes.map {" - \($0)" }.joined(separator: "\n"))
"""
}
}
}
static var configuration = CommandConfiguration(
commandName: "basic-format",
abstract: "Format a source file using BasicFormat"
)
@OptionGroup
var arguments: ParseArguments
@Option(help: "The number of spaces to use for indentation")
var indentationWidth: Int = 4
@Option(help: "The type that the node should be parsed as")
var nodeType: String = "SourceFileSyntax"
func run() throws {
guard case .choices(let choices) = Syntax.structure else {
fatalError("Expected `Syntax.structure` to be the `choices` case")
}
let parsableMetatypes = choices.compactMap { (choice) -> SyntaxParseable.Type? in
guard case .node(let nodeType) = choice else {
return nil
}
return nodeType as? SyntaxParseable.Type
}
let parsableMetatypesByName = Dictionary(
parsableMetatypes.map {
(String(reflecting: $0).replacingOccurrences(of: "SwiftSyntax.", with: ""), $0)
},
uniquingKeysWith: { l, r in l }
)
guard let parseType = parsableMetatypesByName[nodeType] else {
throw Error.unknownSyntaxNodeType(nodeType: nodeType, parsableTypes: parsableMetatypesByName.keys.sorted())
}
let tree = try sourceFileContents.withUnsafeBufferPointer { sourceBuffer in
var parser = Parser(sourceBuffer)
return parseType.parse(from: &parser)
}
let resultTree: Syntax
if foldSequences {
resultTree = foldAllSequences(tree).0
} else {
resultTree = Syntax(tree)
}
if resultTree.hasError {
let diags = ParseDiagnosticsGenerator.diagnostics(for: tree)
printerr(
"""
Source input contained syntax errors. Formatting might be incorrect due to these errors:
\(DiagnosticsFormatter(colorize: TerminalHelper.isConnectedToTerminal).annotatedSource(tree: tree, diags: diags))
----------------------------------------
"""
)
}
let formattedTree = resultTree.formatted(
using: SwiftBasicFormat.BasicFormat(indentationWidth: .spaces(indentationWidth))
)
print(formattedTree.description)
}
}
|
