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74 changes: 74 additions & 0 deletions
74
Sources/SwiftKotlinFramework/plugins/FoundationMethodsTransformPlugin.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| // | ||
| // FoundationMethodsTransformPlugin.swift | ||
| // SwiftKotlinPackageDescription | ||
| // | ||
| // Created by Angel Luis Garcia on 10/12/2017. | ||
| // | ||
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| import Foundation | ||
| import Transform | ||
| import AST | ||
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| public class FoundationMethodsTransformPlugin: TokenTransformPlugin { | ||
| public var name: String { | ||
| return "Foundation transformations" | ||
| } | ||
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| public var description: String { | ||
| return "Transforms methods on lists, maps,... like `first`, `count`... to their Kotlin variant" | ||
| } | ||
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| public init() {} | ||
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| public func transform(tokens: [Token], topDeclaration: TopLevelDeclaration) throws -> [Token] { | ||
| var newTokens = [Token]() | ||
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| for token in tokens { | ||
| if token.kind == .identifier, | ||
| let memberExpression = token.origin as? ExplicitMemberExpression, | ||
| case ExplicitMemberExpression.Kind.namedType(let expression, let identifier) = memberExpression.kind, | ||
| let inferredType = inferTypeFor(expression: expression, topDeclaration: topDeclaration), | ||
| let replace = memberStringMappings[inferredType]?[identifier] { | ||
| newTokens.append(memberExpression.newToken(.identifier, replace)) | ||
| } else if token.kind == .identifier, token.value == "fatalError", let origin = token.origin, let node = token.node { | ||
| newTokens.append(origin.newToken(.keyword, "throw", node)) | ||
| newTokens.append(origin.newToken(.space, " ", node)) | ||
| newTokens.append(origin.newToken(.identifier, "Exception", node)) | ||
| } else { | ||
| newTokens.append(token) | ||
| } | ||
| } | ||
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| return newTokens | ||
| } | ||
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| func inferTypeFor(expression: PostfixExpression, topDeclaration: TopLevelDeclaration) -> String? { | ||
| // TODO: Right now there is no way to infer types. Will be fixed in future versions of AST | ||
| return "List" | ||
| } | ||
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| let memberStringMappings = [ | ||
| "List": [ | ||
| "first": "firstOrNull()", | ||
| "last": "lastOrNull()", | ||
| "count": "size", | ||
| "isEmpty": "isEmpty()" | ||
| ], | ||
| "String": [ | ||
| "count": "length", | ||
| "uppercased": "toUpperCase", | ||
| "lowercased": "toLowerCase" | ||
| ] | ||
| ] | ||
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| // TODO: How to map regex expressions that affect multiple tokens? | ||
| let memberRegexMappings = [ | ||
| "List": [ | ||
| "index(of: \\(.+))": "indexOf($1)", | ||
| "append(\\(.+))": "add($1)", | ||
| "remove(at: \\(.+))": "removeAt($1)", | ||
| "sorted(by: \\(.+))": "sortedWith(comparator = Comparator($1))", | ||
| "joined(separator: \\(.+))": "joinToString(separator = $1)" | ||
| ] | ||
| ] | ||
| } |
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6 changes: 6 additions & 0 deletions
6
Tests/SwiftKotlinFrameworkTests/Tests/plugins/FoundationMethodsTransformPlugin.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| val list = listOf(1, 2, 3) | ||
| list.firstOrNull() | ||
| list.lastOrNull() | ||
| list.size | ||
| list.isEmpty() | ||
| throw Exception("An error ${error} occurred") |
19 changes: 19 additions & 0 deletions
19
Tests/SwiftKotlinFrameworkTests/Tests/plugins/FoundationMethodsTransformPlugin.swift
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,19 @@ | ||
| let list = [1, 2, 3] | ||
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| list.first | ||
| list.last | ||
| list.count | ||
| list.isEmpty | ||
| //list.index(of: a) --> list.indexOf(a) | ||
| //list.append(element) --> list.add(element) | ||
| //list.remove(at: index) --> list.removeAt(index) | ||
| //list.sorted(by: lambda) --> sortedWith(comparator = Comparator(lambda)) | ||
| //list.joined(separator: joiner) --> elements. joinToString(separator = joiner) | ||
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| //let string = "A string" | ||
| //string.count --> string.length | ||
| //string.uppercased() --> string.toUpperCase() | ||
| //string.lowercased() --> string.toLowerCase() | ||
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| fatalError("An error \(error) occurred") | ||
|
|
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