Add WasmExpression

3 files changed, 11 insertions, 5 deletions

diff --git a/src/main/java/org/shedlang/compiler/backends/wasm/structure/ast/instructions/WasmExpression.java b/src/main/java/org/shedlang/compiler/backends/wasm/structure/ast/instructions/WasmExpression.java
new file mode 100644
index 00000000..ef0969e5
--- /dev/null
+++ b/src/main/java/org/shedlang/compiler/backends/wasm/structure/ast/instructions/WasmExpression.java
@@ -0,0 +1,6 @@
+package org.shedlang.compiler.backends.wasm.structure.ast.instructions;
+
+import java.util.List;
+
+public record WasmExpression(List<WasmInstruction> instructions) {
+}
diff --git a/src/main/java/org/shedlang/compiler/backends/wasm/structure/ast/modules/WasmFunction.java b/src/main/java/org/shedlang/compiler/backends/wasm/structure/ast/modules/WasmFunction.java
index 2e5cf592..b63e6fc2 100644
--- a/src/main/java/org/shedlang/compiler/backends/wasm/structure/ast/modules/WasmFunction.java
+++ b/src/main/java/org/shedlang/compiler/backends/wasm/structure/ast/modules/WasmFunction.java
@@ -1,6 +1,6 @@
 package org.shedlang.compiler.backends.wasm.structure.ast.modules;
 
-import org.shedlang.compiler.backends.wasm.structure.ast.instructions.WasmInstruction;
+import org.shedlang.compiler.backends.wasm.structure.ast.instructions.WasmExpression;
 import org.shedlang.compiler.backends.wasm.structure.ast.types.WasmFuncType;
 import org.shedlang.compiler.backends.wasm.structure.ast.types.WasmValueType;
 
@@ -11,7 +11,7 @@ public record WasmFunction(
     List<WasmLocal> params,
     List<WasmLocal> locals,
     List<WasmValueType> resultTypes,
-    List<WasmInstruction> body
+    WasmExpression body
 ) {
     public WasmFuncType type() {
         return new WasmFuncType(
diff --git a/src/main/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructions.java b/src/main/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructions.java
index 58d3d28c..3ed6b618 100644
--- a/src/main/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructions.java
+++ b/src/main/java/org/shedlang/compiler/backends/wasm/structure/binary/WasmBinaryFormatInstructions.java
@@ -1,12 +1,12 @@
 package org.shedlang.compiler.backends.wasm.structure.binary;
 
 import org.shedlang.compiler.backends.wasm.structure.BinaryWriter;
+import org.shedlang.compiler.backends.wasm.structure.ast.instructions.WasmExpression;
 import org.shedlang.compiler.backends.wasm.structure.ast.instructions.WasmI32Const;
 import org.shedlang.compiler.backends.wasm.structure.ast.instructions.WasmI64Const;
 import org.shedlang.compiler.backends.wasm.structure.ast.instructions.WasmInstruction;
 
 import java.io.IOException;
-import java.util.List;
 
 public class WasmBinaryFormatInstructions {
     // Corresponds to https://webassembly.github.io/spec/core/binary/instructions.html
@@ -33,10 +33,10 @@ public class WasmBinaryFormatInstructions {
     // == Expressions ==
 
     static void writeExpression(
-        List<WasmInstruction> instructions,
+        WasmExpression expression,
         BinaryWriter writer
     ) throws IOException  {
-        for (var instruction : instructions) {
+        for (var instruction : expression.instructions()) {
             writeInstruction(instruction, writer);
         }
         writer.writeByte(0x0b);