Artifact Compilation

src/index.ts

@@ -1,11 +1,18 @@
 
 import * as fs from 'fs/promises';
 
+import { Node } from './node-types/abstract-node';
 import { QuestionNode } from "./node-types/question";
 import { ClaimNode } from './node-types/claim';
 import { EvidenceNode } from './node-types/evidence';
 import { SourceNode } from './node-types/source';
 
+import { Edge } from './edge-types/abstract-edge';
+import { GenerateEdge } from './edge-types/generate';
+import { InformEdge } from './edge-types/inform';
+import { SupportEdge } from './edge-types/support';
+import { OpposeEdge } from './edge-types/oppose';
+
 export class Compiler {
 
     public static nodes = [
@@ -15,6 +22,13 @@ export class Compiler {
         SourceNode
     ];
 
+    public static edges = [
+        GenerateEdge,
+        InformEdge,
+        SupportEdge,
+        OpposeEdge
+    ];
+
     public static getNodeType(name: string) {
         for (const nodeType of Compiler.nodes) {
             if (nodeType.TYPE_PATTERN.test(name)) return nodeType;
@@ -22,14 +36,21 @@ export class Compiler {
         throw new Error(`File name does not match any known node type \n - ${name}`);
     }
 
+    public static getEdgeType(name: string) {
+        for (const edgeType of Compiler.edges) {
+            if (name.includes(edgeType.EDGE_TYPE)) return edgeType;
+        }
+        throw new Error(`Edge name does not match any known edge types \n - ${name}`);
+    }
 
-    static async loadNodes(directory: string) {
-        console.log('Loading nodes...');
+    public static async loadNodes(directory: string) {
+        console.log('\nLoading nodes...');
         const nodes = [];
         const files = await fs.readdir(directory);
         for (const file of files) try {
+            const data = await fs.readFile(`${directory}/${file}`, 'utf-8');
             const NodeType = Compiler.getNodeType(file);
-            const node = NodeType.load(file, "");
+            const node = NodeType.load(file, data);
             nodes.push(node);
             console.log(`Loaded ${NodeType.TYPE} node "${node.name}"`);
         } catch (err) {
@@ -38,8 +59,62 @@ export class Compiler {
         return nodes;
     }
 
+    public static loadEdges(nodes: Node[]) {
+        console.log('\nLoading edges...');
+        const edges = [];
+        for (const node of nodes) {
+            const references = node.parseDataEdges();
+            for (const reference of references) try {
+                const source = node;
+                const destination = nodes.find(node => node.name === reference.referenceName);
+                if (!destination) throw new Error(`Could not find referenced node "${reference.referenceName}"`);
+                const EdgeClass = Compiler.getEdgeType(reference.edgeType);
+                const edge = EdgeClass.createEdge(source, destination);
+                edges.push(edge);
+                console.log(`Loaded ${EdgeClass.EDGE_TYPE} edge from "${edge.source.name}" to "${edge.reference.name}"`);
+            } catch (err) {
+                console.error(err.message);
+            }
+        }
+        return edges;
+    }
+
+    public static registerEdges(edges: Edge[]) {
+        console.log('\nRegistering edges...');
+        for (const edge of edges) try {
+            edge.source.registerEdge(edge);
+            edge.reference.registerEdge(edge);
+            console.log(`Registered ${edge.constructor.name} from "${edge.source.name}" to "${edge.reference.name}"`);
+        } catch (err) {
+            console.error(err.message);
+        }
+    }
+
+    public static traverseGraph(node: Node, relationship: string | null, indent: number = 0) {
+        const currentIndent = ' '.repeat(indent);
+        const nodeType = node.constructor as typeof Node;
+        const bullet = relationship ? '> ' + relationship : '-';
+        console.log(`${currentIndent}${bullet} ${nodeType.SYMBOL} ${node.name}`);
+        for (const edge of node.incomingReferences) {
+            if (edge.source instanceof QuestionNode) continue;
+            const edgeType = edge.constructor as typeof Edge;
+            Compiler.traverseGraph(edge.source, edgeType.RELATIONSHIP, indent + 2);
+        }
+    }
 
 }
 
-const graphPath = "./example_graph";
-Compiler.loadNodes(graphPath);
+async function runTest() {
+    console.log("Running Test");
+    const graphPath = "./example_graph";
+    const nodes = await Compiler.loadNodes(graphPath);
+    const edges = await Compiler.loadEdges(nodes);
+    Compiler.registerEdges(edges);
+    console.log("\nGenerating Artifact...");
+    const questions = nodes.filter(node => node instanceof QuestionNode);
+    for (const question of questions) Compiler.traverseGraph(question, null);
+    console.log("\nTest Complete");
+}
+
+
+runTest().then(() => console.log("Done"));

src/node-types/abstract-node.ts

@@ -1,19 +1,46 @@
 
+import { Edge } from "../edge-types/abstract-edge";
+
 export abstract class Node {
 
-    public static readonly TYPE: string;
-    public static readonly TYPE_PATTERN: RegExp;
+	public static readonly EDGE_PATTERN: RegExp = /^- (\S+) \[\[({.+}) (.+)\]\]$/;
+	public static readonly TYPE: string;
+	public static readonly TYPE_PATTERN: RegExp;
+	public static readonly SYMBOL: string;
 
-    public readonly name: string;
-    public readonly data: string;
+	public readonly name: string;
+	public readonly data: string;
+	public readonly outgoingReferences: Edge[] = [];
+	public readonly incomingReferences: Edge[] = [];
 
-    public constructor(name: string, data: string) {
-      this.name = name;
-      this.data = data;
-    }
+	public constructor(name: string, data: string) {
+		this.name = name;
+		this.data = data;
+	}
 
-    public static load(fileName: string, fileData: string): Node {
-      throw new Error('You must override the static parse method in specific node implementations');
-    }
+	public static load(fileName: string, fileData: string): Node {
+		throw new Error('You must override the static parse method in specific node implementations');
+	}
+
+	public parseDataEdges() {
+		type EdgeData = {edgeType: string, referenceType: string, referenceName: string};
+		const edges: EdgeData[] = [];
+		const lines = this.data.split('\n');
+		for (const line of lines) { 
+			const match = line.match(Node.EDGE_PATTERN);
+			if (match) edges.push({
+				edgeType: match[1],
+				referenceType: match[2],
+				referenceName: match[3]
+			});
+		}
+		return edges;
+	}
+
+	public registerEdge(edge: Edge) {
+		if (edge.source === this) this.outgoingReferences.push(edge);
+		else if (edge.reference === this) this.incomingReferences.push(edge);
+		else throw new Error('Edge does not reference this node');
+	}
 
 }

src/node-types/claim.ts

@@ -5,6 +5,7 @@ export class ClaimNode extends Node{
 
     public static readonly TYPE = 'claim';
     public static readonly TYPE_PATTERN = /^\{CLM\}/;
+    public static readonly SYMBOL = "{CLM}";
 
     public constructor(name: string, data: string) {
         super(name, data);

src/node-types/evidence.ts

@@ -5,6 +5,7 @@ export class EvidenceNode extends Node{
 
     public static readonly TYPE = 'evidence';
     public static readonly TYPE_PATTERN = /^\{EVD\}/;
+    public static readonly SYMBOL = "{EVD}";
 
     public constructor(name: string, data: string) {
         super(name, data);

src/node-types/question.ts

@@ -5,6 +5,7 @@ export class QuestionNode extends Node{
 
     public static readonly TYPE = 'question';
     public static readonly TYPE_PATTERN = /^\{QUE\}/;
+    public static readonly SYMBOL = "{QUE}";
 
     public constructor(name: string, data: string) {
         super(name, data);

src/node-types/source.ts

@@ -5,6 +5,7 @@ export class SourceNode extends Node{
 
     public static readonly TYPE = 'source';
     public static readonly TYPE_PATTERN = /^\{SRC\}/;
+    public static readonly SYMBOL = "{SRC}";
 
     public constructor(name: string, data: string) {
         super(name, data);