Add stubbed WASM backend

3 files changed, 39 insertions, 3 deletions

diff --git a/src/main/java/org/shedlang/compiler/backends/Backends.java b/src/main/java/org/shedlang/compiler/backends/Backends.java
new file mode 100644
index 00000000..93801fbc
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/Backends.java
@@ -0,0 +1,14 @@
+package org.shedlang.compiler.backends;
+
+import org.pcollections.OrderedPMap;
+import org.shedlang.compiler.backends.llvm.LlvmBackend;
+import org.shedlang.compiler.backends.wasm.WasmBackend;
+
+public class Backends {
+    private Backends() {
+    }
+
+    public static final OrderedPMap<String, Backend> BACKENDS = OrderedPMap.<String, Backend>empty()
+        .plus("llvm", new LlvmBackend())
+        .plus("wasm", new WasmBackend());
+}
diff --git a/src/main/java/org/shedlang/compiler/backends/wasm/WasmBackend.java b/src/main/java/org/shedlang/compiler/backends/wasm/WasmBackend.java
new file mode 100644
index 00000000..85541f6e
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/wasm/WasmBackend.java
@@ -0,0 +1,22 @@
+package org.shedlang.compiler.backends.wasm;
+
+import org.shedlang.compiler.backends.Backend;
+import org.shedlang.compiler.config.ProjectConfig;
+import org.shedlang.compiler.stackir.instructions.Instruction;
+import org.shedlang.compiler.typechecker.TypeInfo;
+import org.shedlang.compiler.types.NamespaceName;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+public class WasmBackend implements Backend {
+    @Override
+    public void compile(
+        ProjectConfig config,
+        Map<NamespaceName, List<Instruction>> namespaces,
+        TypeInfo typeInfo
+    ) throws IOException {
+
+    }
+}
diff --git a/src/main/java/org/shedlang/compiler/cli/ShedCli.java b/src/main/java/org/shedlang/compiler/cli/ShedCli.java
index 0e36cf13..f8ab153a 100644
--- a/src/main/java/org/shedlang/compiler/cli/ShedCli.java
+++ b/src/main/java/org/shedlang/compiler/cli/ShedCli.java
@@ -4,8 +4,8 @@ import net.sourceforge.argparse4j.ArgumentParsers;
 import net.sourceforge.argparse4j.inf.ArgumentParserException;
 import net.sourceforge.argparse4j.inf.Namespace;
 import org.shedlang.compiler.ShedCompiler;
+import org.shedlang.compiler.backends.Backends;
 import org.shedlang.compiler.backends.GenerateInstructionsBackend;
-import org.shedlang.compiler.backends.llvm.LlvmBackend;
 import org.shedlang.compiler.errors.SourceError;
 
 import java.io.IOException;
@@ -30,7 +30,7 @@ public class ShedCli {
 
         switch (args.<Command>get("command")) {
             case COMPILE -> {
-                compiler.compile(sourcePath, new LlvmBackend());
+                compiler.compile(sourcePath, Backends.BACKENDS.get(args.getString("backend")));
             }
             case GENERATE_INSTRUCTIONS -> {
                 compiler.compile(sourcePath, new GenerateInstructionsBackend());
@@ -47,7 +47,7 @@ public class ShedCli {
         var compileSubParser = subparsers.addParser("compile");
         compileSubParser.setDefault("command", Command.COMPILE);
         compileSubParser.addArgument("source").required(true);
-        compileSubParser.addArgument("--backend").choices("llvm").required(true);
+        compileSubParser.addArgument("--backend").choices(Backends.BACKENDS.keySet()).required(true);
 
         var generateInstructionsSubParser = subparsers.addParser("generate-instructions");
         generateInstructionsSubParser.setDefault("command", Command.GENERATE_INSTRUCTIONS);