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incubator/flex/falcon/trunk/compiler.js/src/org/apache/flex/compiler/internal/as/codegen/JSEmitter.java
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incubator/flex/falcon/trunk/compiler.js/src/org/apache/flex/compiler/internal/as/codegen/JSFlexUtils.java
URL:
http://svn.apache.org/viewvc/incubator/flex/falcon/trunk/compiler.js/src/org/apache/flex/compiler/internal/as/codegen/JSFlexUtils.java?rev=1413061&view=auto
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incubator/flex/falcon/trunk/compiler.js/src/org/apache/flex/compiler/internal/as/codegen/JSFlexUtils.java
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incubator/flex/falcon/trunk/compiler.js/src/org/apache/flex/compiler/internal/as/codegen/JSFlexUtils.java
Fri Nov 23 20:58:50 2012
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+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.flex.compiler.internal.as.codegen;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.apache.flex.compiler.constants.IMetaAttributeConstants;
+import org.apache.flex.compiler.definitions.IClassDefinition;
+import org.apache.flex.compiler.definitions.IDefinition;
+import org.apache.flex.compiler.definitions.ITypeDefinition;
+import org.apache.flex.compiler.definitions.IVariableDefinition;
+import org.apache.flex.compiler.definitions.metadata.IMetaTag;
+import org.apache.flex.compiler.internal.legacy.ASDefinitionFilter;
+import org.apache.flex.compiler.internal.legacy.MemberedDefinitionUtils;
+import org.apache.flex.compiler.projects.ICompilerProject;
+
+/**
+ * Utilities for Flex-oriented special cases in FalconJS compilation. Example:
+ * handling the [SkinPart] metatag
+ */
+public class JSFlexUtils
+{
+ /**
+ * Generates a JavaScript object literal (JSON string) representing the
+ * value that should be returned by the generated get_skinParts() method.
+ * The JSON object is a map from skin part id to a boolean indicating
+ * whether the part is required.
+ */
+ public static String generateGetSkinPartsJSON(IClassDefinition classDef,
ICompilerProject project)
+ {
+ // Gather set of skin parts
+ Map<String, JSFlexUtils.SkinPartInfo> skinPartsInfo =
JSFlexUtils.getSkinParts(classDef, project);
+
+ // Build the JSON string
+ StringBuilder partsObj = new StringBuilder();
+ partsObj.append("{ ");
+
+ // for each skin part...
+ boolean comma = false;
+ for (JSFlexUtils.SkinPartInfo skinPart : skinPartsInfo.values())
+ {
+ if (comma)
+ partsObj.append(", ");
+ else
+ comma = true;
+
+ partsObj.append(skinPart.name);
+ partsObj.append(": ");
+ partsObj.append(skinPart.required);
+ }
+
+ partsObj.append(" }");
+
+ return partsObj.toString();
+ }
+
+ /**
+ * Returns a map specifying the skin parts of the given class. The keys are
+ * the skin part ids, and the values are SkinPartInfo objects containing
+ * additional information about each part.
+ */
+ public static Map<String, SkinPartInfo> getSkinParts(IClassDefinition
componentClass, ICompilerProject project)
+ {
+ // NOTE: derived from ModelUtils.getSkinPartsForType() in the Flash
Builder codebase (in com.adobe.flexide.mxmlmodel plugin)
+
+ ASDefinitionFilter filter = new
ASDefinitionFilter(ASDefinitionFilter.ClassificationValue.VARIABLES,
+
ASDefinitionFilter.SearchScopeValue.INHERITED_MEMBERS,
+
ASDefinitionFilter.AccessValue.ALL,
+ componentClass);
+ IDefinition[] members =
MemberedDefinitionUtils.getAllMembers(componentClass, project, filter);
+
+ HashMap<String, SkinPartInfo> map = new HashMap<String,
SkinPartInfo>();
+
+ // For each variable declared in class...
+ for (IDefinition member : members)
+ {
+ IVariableDefinition variable = (IVariableDefinition)member;
+
+ // Is it tagged [SkinPart] ?
+ IMetaTag skinPartTag =
variable.getMetaTagByName(IMetaAttributeConstants.ATTRIBUTE_SKIN_PART);
+ if (skinPartTag != null)
+ {
+ // Gather information about the skin part
+ String name = variable.getBaseName();
+ ITypeDefinition partType = variable.resolveType(project);
+ String asClass = partType != null ?
partType.getQualifiedName() : null;
+ boolean required = parseRequired(skinPartTag);
+
+ SkinPartInfo info = new SkinPartInfo(name, asClass, required);
+
+ // Add to result
+ // Note: We get duplicates for [Bindable] variables because
they generate getter/setter pairs
+ map.put(name, info);
+ }
+ }
+
+ return map;
+ }
+
+ private static boolean parseRequired(IMetaTag metaTag)
+ {
+ String requiredStr =
metaTag.getAttributeValue(IMetaAttributeConstants.NAME_SKIN_PART_REQUIRED);
+ return requiredStr != null && requiredStr.length() > 0 &&
+
requiredStr.equals(IMetaAttributeConstants.VALUE_SKIN_PART_REQUIRED_TRUE);
+ }
+
+ /**
+ * Value object representing information about a skin part. Immutable.
NOTE:
+ * derived from ModelUtils.SkinPartInfo in the Flash Builder codebase
+ */
+ public static class SkinPartInfo
+ {
+ /** Part name - this should be set as the ID in the skin. Not null. */
+ public final String name;
+
+ /**
+ * Type of the part, or null if the type could not be resolved on the
+ * classpath.
+ */
+ public final String asClass;
+
+ /** Does the metadata indicate that the part is required? */
+ public final boolean required;
+
+ public SkinPartInfo(String name, String asClass, boolean required)
+ {
+ assert name != null;
+ assert asClass != null;
+ this.name = name;
+ this.asClass = asClass;
+ this.required = required;
+ }
+ }
+}
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incubator/flex/falcon/trunk/compiler.js/src/org/apache/flex/compiler/internal/as/codegen/JSFlexUtils.java
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