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// Copyright (C) 2024 Rubén Beltrán del Río
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see https://map.tranquil.systems.
import CoreGraphics
import Foundation
struct MapParser {
static func parse(content: String) -> ParsedMap {
let parsers = [
AnyMapParserStrategy(NoteParserStrategy()),
AnyMapParserStrategy(VertexParserStrategy()),
AnyMapParserStrategy(EdgeParserStrategy()),
AnyMapParserStrategy(BlockerParserStrategy()),
AnyMapParserStrategy(OpportunityParserStrategy()),
AnyMapParserStrategy(StageParserStrategy()),
AnyMapParserStrategy(GroupParserStrategy()),
]
let builder = MapBuilder()
let lines = content.split(whereSeparator: \.isNewline)
for (index, line) in lines.enumerated() {
for parser in parsers {
if parser.canHandle(line: String(line)) {
let (type, object) = parser.handle(
index: index, line: String(line), vertices: builder.vertices)
builder.addObjectToMap(type: type, object: object)
break
}
}
}
return builder.build()
}
}
// MARK: - Types
struct MapParsingPatterns {
static let vertex = try! NSRegularExpression(
pattern:
"^([^\\(\\[\\]]*?)[\\s]*\\([\\s]*([0-9]+.?[0-9]*)[\\s]*,[\\s]*([0-9]+.?[0-9]*)[\\s]*\\)[\\s]*(?:\\[(.*?)\\])?[\\s]*$",
options: [.caseInsensitive, .anchorsMatchLines])
static let edge = try! NSRegularExpression(
pattern: "^(.+?)[\\s]*-([->])[\\s]*(.+)", options: [.caseInsensitive, .anchorsMatchLines])
static let blocker = try! NSRegularExpression(
pattern: "^\\[(Blocker)\\][\\s]*(.+)", options: [.caseInsensitive, .anchorsMatchLines])
static let opportunity = try! NSRegularExpression(
pattern: "^\\[(Evolution)\\][\\s]*(.+)[\\s]+([-+])[\\s]*([0-9]+.?[0-9]*)",
options: [.caseInsensitive, .anchorsMatchLines])
static let note = try! NSRegularExpression(
pattern:
"^\\[(Note)\\][\\s]*\\([\\s]*([0-9]+.?[0-9]*)[\\s]*,[\\s]*([0-9]+.?[0-9]*)[\\s]*\\)[\\s]*(.*)",
options: [.caseInsensitive, .anchorsMatchLines])
static let stage = try! NSRegularExpression(
pattern: "^\\[(I{1,3})\\][\\s]*([0-9]+.?[0-9]*)",
options: [.caseInsensitive, .anchorsMatchLines])
static let group = try! NSRegularExpression(
pattern: "^\\[(Group)\\][\\s]*(.+)", options: [.caseInsensitive, .anchorsMatchLines])
}
struct ParsedMap {
let vertices: [Vertex]
let edges: [MapEdge]
let blockers: [Blocker]
let opportunities: [Opportunity]
let notes: [Note]
let stages: [CGFloat]
let groups: [[Vertex]]
static let empty: ParsedMap = ParsedMap(
vertices: [], edges: [], blockers: [], opportunities: [], notes: [], stages: defaultDimensions,
groups: [])
}
struct Vertex: Identifiable, Hashable {
let id: Int
let label: String
let position: CGPoint
var shape: VertexShape = .circle
}
struct Note {
let id: Int
let position: CGPoint
let text: String
}
enum VertexShape: String {
case circle
case square
case triangle
case x
}
struct MapEdge {
let id: Int
let origin: CGPoint
let destination: CGPoint
let arrowhead: Bool
}
struct Blocker {
let id: Int
let position: CGPoint
}
struct Opportunity {
let id: Int
let origin: CGPoint
let destination: CGPoint
}
struct StageDimensions {
let index: Int
let dimensions: CGFloat
}
private let defaultDimensions: [CGFloat] = [
25.0,
50.0,
75.0,
]
// MARK: - MapParserStrategy protocol
protocol MapParserStrategy {
func canHandle(line: String) -> Bool
func handle(index: Int, line: String, vertices: [String: Vertex]) -> (Any.Type, Any)
}
struct AnyMapParserStrategy: MapParserStrategy {
private let base: MapParserStrategy
init<T: MapParserStrategy>(_ base: T) {
self.base = base
}
func canHandle(line: String) -> Bool {
return base.canHandle(line: line)
}
func handle(index: Int, line: String, vertices: [String: Vertex]) -> (Any.Type, Any) {
return base.handle(index: index, line: line, vertices: vertices)
}
}
// MARK: - Map Builder
class MapBuilder {
var vertices: [String: Vertex] = [:]
private var edges: [MapEdge] = []
private var blockers: [Blocker] = []
private var opportunities: [Opportunity] = []
private var notes: [Note] = []
private var stages: [CGFloat] = defaultDimensions
private var groups: [[Vertex]] = []
func addObjectToMap(type: Any.Type, object: Any) {
if type == Vertex.self {
let vertex = object as! Vertex
vertices[vertex.label] = vertex
}
if type == MapEdge.self {
let edge = object as! MapEdge
edges.append(edge)
}
if type == Blocker.self {
let blocker = object as! Blocker
blockers.append(blocker)
}
if type == Opportunity.self {
let opportunity = object as! Opportunity
opportunities.append(opportunity)
}
if type == Note.self {
let note = object as! Note
notes.append(note)
}
if type == StageDimensions.self {
let stageDimensions = object as! StageDimensions
stages[stageDimensions.index] = stageDimensions.dimensions
}
if type == [Vertex].self {
let group = object as! [Vertex]
groups.append(group)
}
}
func build() -> ParsedMap {
let mappedVertices = vertices.map { label, vertex in return vertex }
return ParsedMap(
vertices: mappedVertices, edges: edges, blockers: blockers, opportunities: opportunities,
notes: notes,
stages: stages, groups: groups)
}
}
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