add getType() to WasmInstruction

src/de/inetsoftware/jwebassembly/module/ModuleGenerator.java

@@ -233,8 +233,11 @@ public class ModuleGenerator {
             writeMethodSignature( name, method.isStatic(), localVariableTable, codeBuilder ); 
 
             for( WasmInstruction instruction : codeBuilder.getInstructions() ) {
-                if( instruction instanceof WasmCallInstruction ) {
-                    functions.functionCall( ((WasmCallInstruction)instruction).getFunctionName() );
+                switch( instruction.getType() ) {
+                    case Call:
+                        functions.functionCall( ((WasmCallInstruction)instruction).getFunctionName() );
+                        break;
+                    default:
                 }
                 instruction.writeTo( writer );
             }

src/de/inetsoftware/jwebassembly/module/WasmArrayInstruction.java

@@ -22,6 +22,7 @@ import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 import de.inetsoftware.jwebassembly.WasmException;
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ArrayOperator;
 import de.inetsoftware.jwebassembly.wasm.StorageType;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
@@ -54,6 +55,14 @@ class WasmArrayInstruction extends WasmInstruction {
         this.type = type;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Array;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmBlockInstruction.java

@@ -21,6 +21,7 @@ import java.io.IOException;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 import de.inetsoftware.jwebassembly.wasm.WasmBlockOperator;
 
@@ -52,6 +53,14 @@ class WasmBlockInstruction extends WasmInstruction {
         this.data = data;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Block;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmCallInstruction.java

@@ -54,6 +54,14 @@ class WasmCallInstruction extends WasmInstruction {
         this.name = new FunctionName( method );
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Call;
+    }
+
     /**
      * Get the function name that should be called
      * 

src/de/inetsoftware/jwebassembly/module/WasmConstInstruction.java

@@ -21,6 +21,7 @@ import java.io.IOException;
 import javax.annotation.Nonnull;
 
 import de.inetsoftware.jwebassembly.WasmException;
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 
 /**
@@ -63,6 +64,14 @@ class WasmConstInstruction extends WasmInstruction {
         this( value, getValueType( value ), javaCodePos );
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Const;
+    }
+
     /**
      * Find the matching ValueType for the given value.
      * 

src/de/inetsoftware/jwebassembly/module/WasmConvertInstruction.java

@@ -17,6 +17,7 @@ package de.inetsoftware.jwebassembly.module;
 
 import java.io.IOException;
 
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 
 /**
@@ -42,6 +43,14 @@ class WasmConvertInstruction extends WasmInstruction {
         this.conversion = conversion;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Convert;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmGlobalInstruction.java

@@ -21,6 +21,7 @@ import java.io.IOException;
 import javax.annotation.Nonnull;
 
 import de.inetsoftware.classparser.Member;
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 
 /**
@@ -51,6 +52,14 @@ class WasmGlobalInstruction extends WasmInstruction {
         this.ref = ref;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Global;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmInstruction.java

@@ -31,6 +31,13 @@ import de.inetsoftware.jwebassembly.wasm.ValueType;
  */
 abstract class WasmInstruction {
 
+    /**
+     * Type of instruction to faster differ as with instanceof.
+     */
+    static enum Type {
+        LoadStore, Const, Convert, Local, Global, Block, Numeric, Nop, Call, Array, Struct;
+    }
+
     private int javaCodePos;
 
     /**
@@ -43,6 +50,13 @@ abstract class WasmInstruction {
         this.javaCodePos = javaCodePos;
     }
 
+    /**
+     * Get the type of instruction
+     * @return the type
+     */
+    @Nonnull
+    abstract Type getType();
+
     /**
      * Write this instruction to the WASM module.
      * 

src/de/inetsoftware/jwebassembly/module/WasmLoadStoreInstruction.java

@@ -21,6 +21,7 @@ import java.io.IOException;
 import javax.annotation.Nonnegative;
 import javax.annotation.Nonnull;
 
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 
 /**
@@ -56,6 +57,14 @@ class WasmLoadStoreInstruction extends WasmInstruction {
         this.localVariables = localVariables;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.LoadStore;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmLocalInstruction.java

@@ -21,6 +21,7 @@ import java.io.IOException;
 import javax.annotation.Nonnegative;
 import javax.annotation.Nonnull;
 
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 
 /**
@@ -51,6 +52,14 @@ class WasmLocalInstruction extends WasmInstruction {
         this.idx = idx;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Local;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmNopInstruction.java

@@ -20,6 +20,7 @@ import java.io.IOException;
 
 import javax.annotation.Nonnull;
 
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 
 /**
@@ -40,6 +41,14 @@ class WasmNopInstruction extends WasmInstruction {
         super( javaCodePos );
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Nop;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmNumericInstruction.java

@@ -21,6 +21,7 @@ import java.io.IOException;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.NumericOperator;
 import de.inetsoftware.jwebassembly.wasm.ValueType;
 
@@ -52,6 +53,14 @@ class WasmNumericInstruction extends WasmInstruction {
         this.valueType = valueType;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Numeric;
+    }
+
     /**
      * {@inheritDoc}
      */

src/de/inetsoftware/jwebassembly/module/WasmStructInstruction.java

@@ -22,6 +22,7 @@ import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 import de.inetsoftware.jwebassembly.WasmException;
+import de.inetsoftware.jwebassembly.module.WasmInstruction.Type;
 import de.inetsoftware.jwebassembly.wasm.ArrayOperator;
 import de.inetsoftware.jwebassembly.wasm.StorageType;
 import de.inetsoftware.jwebassembly.wasm.StructOperator;
@@ -55,6 +56,14 @@ class WasmStructInstruction extends WasmInstruction {
         this.type = type;
     }
 
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    Type getType() {
+        return Type.Struct;
+    }
+
     /**
      * {@inheritDoc}
      */