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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 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 Foundation
/// Generates the extensions to the lint and format pipelines.
final class PipelineGenerator: FileGenerator {
/// The rules collected by scanning the formatter source code.
let ruleCollector: RuleCollector
/// Creates a new pipeline generator.
init(ruleCollector: RuleCollector) {
self.ruleCollector = ruleCollector
}
func write(into handle: FileHandle) throws {
handle.write(
"""
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 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
//
//===----------------------------------------------------------------------===//
// This file is automatically generated with generate-swift-format. Do not edit!
import SwiftSyntax
/// A syntax visitor that delegates to individual rules for linting.
///
/// This file will be extended with `visit` methods in Pipelines+Generated.swift.
class LintPipeline: SyntaxVisitor {
/// The formatter context.
let context: Context
/// Stores lint and format rule instances, indexed by the `ObjectIdentifier` of a rule's
/// class type.
var ruleCache = [ObjectIdentifier: Rule]()
/// Rules present in this dictionary skip visiting children until they leave the
/// syntax node stored as their value
var shouldSkipChildren = [ObjectIdentifier: SyntaxProtocol]()
/// Creates a new lint pipeline.
init(context: Context) {
self.context = context
super.init(viewMode: .sourceAccurate)
}
"""
)
for (nodeType, lintRules) in ruleCollector.syntaxNodeLinters.sorted(by: { $0.key < $1.key }) {
handle.write(
"""
override func visit(_ node: \(nodeType)) -> SyntaxVisitorContinueKind {
""")
for ruleName in lintRules.sorted() {
handle.write(
"""
visitIfEnabled(\(ruleName).visit, for: node)
""")
}
handle.write(
"""
return .visitChildren
}
""")
handle.write(
"""
override func visitPost(_ node: \(nodeType)) {
"""
)
for ruleName in lintRules.sorted() {
handle.write(
"""
onVisitPost(rule: \(ruleName).self, for: node)
""")
}
handle.write(
"""
}
"""
)
}
handle.write(
"""
}
extension FormatPipeline {
func rewrite(_ node: Syntax) -> Syntax {
var node = node
"""
)
for ruleName in ruleCollector.allFormatters.map({ $0.typeName }).sorted() {
handle.write(
"""
node = \(ruleName)(context: context).rewrite(node)
""")
}
handle.write(
"""
return node
}
}
""")
}
}
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