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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 117x 117x 117x 117x 117x 1x 1x 186x 186x 1x 1x 6x 6x 1x 1x 246x 246x 1x 1x 820x 688x 688x 820x 820x 1x 1x 302x 302x 302x 242x 242x 302x 1x 1x 619x 619x 3722x 4320x 4320x 3722x 619x 619x 1x 1x 1x 1x 44x 44x 319x 319x 319x 44x 44x 1x 1x 72x 72x 1x 1x 1x 72x 1x 1x 71x 71x 71x 71x 1x 1x 1x 1x 42x 42x 173x 173x 173x 42x 42x 1x 1x 44x 44x 1x 1x 3x 3x 3x 3x 3x 3x 3x 3x 3x 1x 1x 230x 230x 1743x 222x 222x 1743x 230x 230x 1x 1x 230x 230x 1743x 188x 188x 1743x 230x 230x 1x 1x 1x 43x 328x 100x 100x 228x 228x 328x 134x 134x 157x 157x 134x 136x 136x 134x 157x 159x 159x 55x 55x 159x 159x 159x 157x 134x 228x 328x 8x 8x 8x 8x 328x 43x 43x 43x 1x | export enum FLOW_EDGE_TYPE { true = "true", false = "false", undefined = "undefined", } export class FlowGraph { private edges: {[from: string]: {[to: string]: FLOW_EDGE_TYPE}}; private readonly startNode: string; private readonly endNode: string; private label: string; public constructor(counter: number) { this.edges = {}; this.label = "undefined"; this.startNode = "start#" + counter; this.endNode = "end#" + counter; } public getStart(): string { return this.startNode; } public getLabel(): string { return this.label; } public getEnd(): string { return this.endNode; } public addEdge(from: string, to: string, type: FLOW_EDGE_TYPE) { if (this.edges[from] === undefined) { this.edges[from] = {}; } this.edges[from][to] = type; } public removeEdge(from: string, to: string) { if (this.edges[from] === undefined) { return; } delete this.edges[from][to]; if (Object.keys(this.edges[from]).length === 0) { delete this.edges[from]; } } public listEdges() { const list: {from: string, to: string, type: FLOW_EDGE_TYPE}[] = []; for (const from of Object.keys(this.edges)) { for (const to of Object.keys(this.edges[from])) { list.push({from, to, type: this.edges[from][to]}); } } return list; } public listInto(to: string, skipStart = true): string[] { const ret: string[] = []; for (const e of this.listEdges()) { if (skipStart === true && e.from === this.getStart()) { continue; } if (e.to === to) { ret.push(e.from); } } return ret; } public listNodes() { const set = new Set<string>(); for (const l of this.listEdges()) { set.add(l.from); set.add(l.to); } return Array.from(set.values()); } public hasEdges(): boolean { return Object.keys(this.edges).length > 0; } /** return value: end node of to graph */ public addGraph(from: string, to: FlowGraph, type: FLOW_EDGE_TYPE): string { if (to.hasEdges() === false) { return from; } this.addEdge(from, to.getStart(), type); to.listEdges().forEach(e => this.addEdge(e.from, e.to, e.type)); return to.getEnd(); } public toJSON(): string { return JSON.stringify(this.edges); } public toTextEdges(): string { let graph = ""; for (const l of this.listEdges()) { const label = l.type === FLOW_EDGE_TYPE.undefined ? "" : ` [label="${l.type}"]`; graph += `"${l.from}" -> "${l.to}"${label};\n`; } return graph.trim(); } public setLabel(label: string) { this.label = label; } public toDigraph(): string { return `digraph G { labelloc="t"; label="${this.label}"; graph [fontname = "helvetica"]; node [fontname = "helvetica", shape="box"]; edge [fontname = "helvetica"]; ${this.toTextEdges()} }`; } public listSources(node: string): {name: string, type: FLOW_EDGE_TYPE}[] { const set: {name: string, type: FLOW_EDGE_TYPE}[] = []; for (const l of this.listEdges()) { if (node === l.to) { set.push({name: l.from, type: l.type}); } } return set; } public listTargets(node: string): {name: string, type: FLOW_EDGE_TYPE}[] { const set: {name: string, type: FLOW_EDGE_TYPE}[] = []; for (const l of this.listEdges()) { if (node === l.from) { set.push({name: l.to, type: l.type}); } } return set; } /** removes all nodes containing "#" that have one in-going and one out-going edge */ public reduce() { for (const node of this.listNodes()) { if (node.includes("#") === false) { continue; } const sources = this.listSources(node); const targets = this.listTargets(node); if (sources.length > 0 && targets.length > 0) { // hash node in the middle of the graph for (const s of sources) { this.removeEdge(s.name, node); } for (const t of targets) { this.removeEdge(node, t.name); } for (const s of sources) { for (const t of targets) { let type = FLOW_EDGE_TYPE.undefined; if (s.type !== FLOW_EDGE_TYPE.undefined) { type = s.type; } if (t.type !== FLOW_EDGE_TYPE.undefined) { if (type !== FLOW_EDGE_TYPE.undefined) { throw new Error("reduce: cannot merge, different edge types"); } type = t.type; } this.addEdge(s.name, t.name, type); } } } if (node.startsWith("end#") && sources.length === 0) { for (const t of targets) { this.removeEdge(node, t.name); } } } return this; } } |