Happy path transform document, duplicate detection should be added.

parser/src/main/java/nu/zoom/dsl/ast/EndpointsVisitorTransformer.java

@@ -2,8 +2,10 @@ package nu.zoom.dsl.ast;
 
 import nu.zoom.dsl.parser.EndpointsBaseVisitor;
 import nu.zoom.dsl.parser.EndpointsParser;
+import org.antlr.v4.runtime.tree.TerminalNode;
 
 import java.util.ArrayList;
+import java.util.List;
 
 public class EndpointsVisitorTransformer extends EndpointsBaseVisitor<EndpointsParser.DocumentContext> {
 	private ArrayList<EndpointNode> endpoints = new ArrayList<>();
@@ -12,27 +14,74 @@ public class EndpointsVisitorTransformer extends EndpointsBaseVisitor<EndpointsP
 	public EndpointsVisitorTransformer() {
 	}
 
+	public List<EndpointNode> getEndpoints() {
+		return List.copyOf(endpoints);
+	}
+
+	public List<ConfigItemNode> getConfig() {
+		return List.copyOf(config);
+	}
+
+	public List<CompoundTypeNode> getDataTypes() {
+		return List.copyOf(dataTypes);
+	}
+
 	@Override
 	public EndpointsParser.DocumentContext visitConfigitem(EndpointsParser.ConfigitemContext ctx) {
 		String configKey = ctx.configkey().IDENTIFIER().getText() ;
-		String configValue = getText(ctx.configvalue()) ;
+		String configValue = getText(ctx.configvalue().IDENTIFIER(), ctx.configvalue().VALUE()) ;
 		this.config.add(new ConfigItemNode(configKey, configValue));
 		return super.visitConfigitem(ctx) ;
 	}
 
 	@Override
 	public EndpointsParser.DocumentContext visitCompoundType(EndpointsParser.CompoundTypeContext ctx) {
+		this.dataTypes.add(extractCompoundTypeNode(ctx));
 		return super.visitCompoundType(ctx);
 	}
 
 	@Override
 	public EndpointsParser.DocumentContext visitEndpoint(EndpointsParser.EndpointContext ctx) {
+		List<String> segments = ctx
+				.path()
+				.pathSegment()
+				.stream()
+				.map(
+						segment -> getText(segment.IDENTIFIER(), segment.VALUE())
+				).toList() ;
+		TerminalNode typeReference = ctx.IDENTIFIER() ;
+		if (typeReference != null) {
+			var endpoint = new EndpointNode(new PathsNode(segments), typeReference.getText());
+			this.endpoints.add(endpoint);
+		} else {
+			var compoundTypeNode = extractCompoundTypeNode(ctx.compoundType()) ;
+			var endpoint = new EndpointNode(new PathsNode(segments), compoundTypeNode.name());
+			this.dataTypes.add(compoundTypeNode);
+			this.endpoints.add(endpoint);
+		}
 		return super.visitEndpoint(ctx);
 	}
 
-	private String getText(EndpointsParser.ConfigvalueContext ctx) {
-		String identifierText = (ctx.IDENTIFIER() != null) ? ctx.IDENTIFIER().getText() : "" ;
-		String valueText = (ctx.VALUE() != null) ? ctx.VALUE().getText() : "" ;
-		return identifierText + valueText;
+	private CompoundTypeNode extractCompoundTypeNode(EndpointsParser.CompoundTypeContext ctx) {
+		String typeName = ctx.compoundTypeName().getText() ;
+		List<FieldNode> fields = extractTypeFields(ctx.compoundFields().compoundField()) ;
+		return new CompoundTypeNode(typeName, fields) ;
+	}
+
+	private List<FieldNode> extractTypeFields(List<EndpointsParser.CompoundFieldContext> compoundFieldContexts) {
+		return compoundFieldContexts.stream().map(
+				ctx -> new FieldNode(
+						ctx.fieldName().getText(),
+						ctx.fieldType().getText()
+				)
+		).toList() ;
+	}
+
+	// Concatenate the text from to terminal nodes. Useful for contexts that are either an identifier or a value,
+	// and you just want the text from whichever is not null.
+	private String getText(TerminalNode identifier, TerminalNode value) {
+		return
+				identifier != null ? identifier.getText() : ""
+				+ value != null ? value.getText() : "" ;
 	}
 }

parser/src/main/java/nu/zoom/dsl/ast/ParserWrapper.java

@@ -11,12 +11,13 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 
 public class ParserWrapper {
-	public DocumentNode parse(Path sourcePath) throws IOException {
+	public static DocumentNode parse(Path sourcePath) throws IOException {
 		var ins = CharStreams.fromPath(sourcePath, StandardCharsets.UTF_8);
 		EndpointsLexer lexer = new EndpointsLexer(ins);
 		EndpointsParser parser = new EndpointsParser(new CommonTokenStream(lexer));
 		var document= parser.document() ;
-		new EndpointsVisitorTransformer().visit(document);
-		return null ;
+		var astTransformer = new EndpointsVisitorTransformer();
+		astTransformer.visit(document);
+		return new DocumentNode(astTransformer.getConfig(), astTransformer.getDataTypes(), astTransformer.getEndpoints());
 	}
 }

parser/src/main/java/nu/zoom/dsl/cli/EndpointsCLI.java

@@ -1,5 +1,6 @@
 package nu.zoom.dsl.cli;
 
+import nu.zoom.dsl.ast.DocumentNode;
 import nu.zoom.dsl.ast.ParserWrapper;
 import picocli.CommandLine;
 import picocli.CommandLine.Command;
@@ -41,7 +42,8 @@ public class EndpointsCLI implements Callable<Integer> {
 			validateTemplateDirectory();
 			validateInputFile();
 			validateOutputDirectory();
-			new ParserWrapper().parse(file);
+			DocumentNode rootNode = ParserWrapper.parse(file);
+			System.out.println(rootNode);
 			return 0;
 		} catch (Exception e) {
 			System.err.println(e.getMessage());