Parser for tapir file and transformer. Started on generator.

.gitignore

@@ -36,11 +36,8 @@ replay_pid*
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
 
 # User-specific stuff
-.idea/**/workspace.xml
-.idea/**/tasks.xml
-.idea/**/usage.statistics.xml
-.idea/**/dictionaries
-.idea/**/shelf
+.idea/**
+*.iml
 
 # AWS User-specific
 .idea/**/aws.xml

parser/src/main/java/nu/zoom/tapir/EndpointNode.java

@@ -1,4 +1,4 @@
-package nu.zoom.state;
+package nu.zoom.tapir;
 
 public record EndpointNode(PathsNode paths, HandlerNode handler) {
 }

parser/src/main/java/nu/zoom/tapir/FieldNode.java

@@ -1,4 +1,4 @@
-package nu.zoom.state;
+package nu.zoom.tapir;
 
 public record FieldNode(String name, String type) {
 }

parser/src/main/java/nu/zoom/tapir/Generator.java

@@ -0,0 +1,70 @@
+package nu.zoom.tapir;
+
+import nu.zoom.tapir.parser.*;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.concurrent.Callable;
+
+import picocli.CommandLine;
+import picocli.CommandLine.Command;
+import picocli.CommandLine.Option;
+import picocli.CommandLine.Parameters;
+
+@Command(name = "tapirgen", mixinStandardHelpOptions = true, description = "Generate source code from a tapir endpoint specification file.")
+public class Generator implements Callable<Integer> {
+	@Parameters(index = "0", description = "The source tapir file.")
+	private Path file;
+
+	@Option(names = {"-t", "--template"}, description = "The template directory. Default is ~/tapir-templates")
+	private Path templateDir = Paths.get(System.getProperty("user.dir"), "tapir-templates");
+
+	@Option(names = {"-o", "--output"}, description = "The directory to write the gerenated code to. Default is ~/tapir-output")
+	private Path outputDir = Paths.get(System.getProperty("user.dir"), "tapir-output");
+
+	public static void main(String[] args) throws ParseException {
+		int exitCode = new CommandLine(new Generator()).execute(args);
+		System.exit(exitCode);
+	}
+
+	@Override
+	public Integer call() {
+		try {
+			validateTemplateDirectory();
+			validateInputFile();
+			StringReader reader = new StringReader("foo/bar/baz/ -> fooHandler(id:String, name:NonEmptyString)foo/baz/->bazHandler(nothing:Any)");
+			var rootNode = new TapirParser(reader).endpoints();
+			var endpoints = NodeTransformer.transform(rootNode);
+			rootNode.dump("");
+			endpoints.forEach(endpoint -> {
+				System.out.println(endpoint);
+			});
+			return 0;
+		} catch (Exception e) {
+			System.err.println(e.getMessage());
+			return 1;
+		}
+	}
+
+	private void validateTemplateDirectory() throws IOException {
+		if (!Files.isDirectory(this.templateDir)) {
+			throw new IllegalArgumentException("Template directory '" + this.templateDir + "' does not exist.");
+		}
+		Path endpointTemplate = this.templateDir.resolve("endpoints.ftl") ;
+		if (Files.notExists(endpointTemplate)) {
+			throw new IllegalArgumentException("Can not find: '" + endpointTemplate + "'.");
+		}
+	}
+
+	private void validateInputFile() throws IOException {
+		if (Files.notExists(this.file)) {
+			throw new IllegalArgumentException("Input file '" + this.file + "' does not exist.");
+		}
+		if (!Files.isReadable(this.file) || !Files.isRegularFile(this.file)) {
+			throw new IllegalArgumentException("Input file '" + this.file + "' is not a readable file.");
+		}
+	}
+}

parser/src/main/java/nu/zoom/tapir/HandlerNode.java

@@ -1,4 +1,4 @@
-package nu.zoom.state;
+package nu.zoom.tapir;
 
 import java.util.List;
 

parser/src/main/java/nu/zoom/tapir/NodeTransformer.java

@@ -1,4 +1,4 @@
-package nu.zoom.state;
+package nu.zoom.tapir;
 
 import nu.zoom.tapir.parser.Node;
 import nu.zoom.tapir.parser.ParseException;

parser/src/main/java/nu/zoom/tapir/PathsNode.java

@@ -1,4 +1,4 @@
-package nu.zoom.state;
+package nu.zoom.tapir;
 
 import java.util.List;
 

parser/src/main/java/nu/zoom/tapir/TargetGenerator.java

@@ -1,4 +1,4 @@
-package nu.zoom.state;
+package nu.zoom.tapir;
 
 import java.nio.file.Path;
 import java.util.List;