Use isEmpty() instead of .size() == 0.

Author: fniephaus

wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/Linker.java

@@ -502,7 +502,7 @@ void resolveMemoryImport(WasmStore store, WasmInstance instance, ImportDescripto
                                     importedModuleName, importedMemoryName, instance.name()));
                 }
                 final WasmModule importedModule = importedInstance.module();
-                if (importedModule.exportedMemories().size() == 0) {
+                if (importedModule.exportedMemories().isEmpty()) {
                     throw WasmException.create(Failure.UNKNOWN_IMPORT,
                                     String.format("The imported module '%s' does not export any memories, so cannot resolve memory '%s' imported in module '%s'.",
                                                     importedModuleName, importedMemoryName, instance.name()));
@@ -791,7 +791,7 @@ void resolveTableImport(WasmStore store, WasmInstance instance, ImportDescriptor
                 } else {
                     final WasmModule importedModule = importedInstance.module();
                     final String importedTableName = importDescriptor.memberName();
-                    if (importedModule.exportedTables().size() == 0) {
+                    if (importedModule.exportedTables().isEmpty()) {
                         throw WasmException.create(Failure.UNKNOWN_IMPORT,
                                         String.format("The imported module '%s' does not export any tables, so cannot resolve table '%s' imported in module '%s'.",
                                                         importedModuleName, importedTableName, instance.name()));

wasm/src/org.graalvm.wasm/src/org/graalvm/wasm/SymbolTable.java

@@ -985,7 +985,7 @@ void importTable(String moduleName, String tableName, int index, int initSize, i
 
     void addTable(int index, int minSize, int maxSize, byte elemType, boolean referenceTypes) {
         if (!referenceTypes) {
-            assertTrue(importedTables.size() == 0, "A table has already been imported in the module.", Failure.MULTIPLE_TABLES);
+            assertTrue(importedTables.isEmpty(), "A table has already been imported in the module.", Failure.MULTIPLE_TABLES);
             assertTrue(tableCount == 0, "A table has already been declared in the module.", Failure.MULTIPLE_TABLES);
         }
         ensureTableCapacity(index);
@@ -1089,7 +1089,7 @@ public void importMemory(String moduleName, String memoryName, int index, long i
 
     void addMemory(int index, long minSize, long maxSize, boolean indexType64, boolean shared, boolean multiMemory) {
         if (!multiMemory) {
-            assertTrue(importedMemories.size() == 0, "A memory has already been imported in the module.", Failure.MULTIPLE_MEMORIES);
+            assertTrue(importedMemories.isEmpty(), "A memory has already been imported in the module.", Failure.MULTIPLE_MEMORIES);
             assertTrue(memoryCount == 0, "A memory has already been declared in the module.", Failure.MULTIPLE_MEMORIES);
         }
         ensureMemoryCapacity(index);