diff options
Diffstat (limited to 'src/fjbg/ch/epfl/lamp/fjbg/JClass.java')
| -rw-r--r-- | src/fjbg/ch/epfl/lamp/fjbg/JClass.java | 195 |
1 files changed, 152 insertions, 43 deletions
diff --git a/src/fjbg/ch/epfl/lamp/fjbg/JClass.java b/src/fjbg/ch/epfl/lamp/fjbg/JClass.java index 0fc604424a..31e30725c9 100644 --- a/src/fjbg/ch/epfl/lamp/fjbg/JClass.java +++ b/src/fjbg/ch/epfl/lamp/fjbg/JClass.java @@ -1,3 +1,7 @@ +/* FJBG -- Fast Java Bytecode Generator + * Copyright 2002-2011 LAMP/EPFL + * @author Michel Schinz + */ package ch.epfl.lamp.fjbg; @@ -7,8 +11,8 @@ import java.io.*; /** * Representation of a Java class. * - * @author Michel Schinz - * @version 1.0 + * @author Michel Schinz, Stephane Micheloud + * @version 1.1 */ public class JClass extends JMember { @@ -81,7 +85,7 @@ public class JClass extends JMember { pool = context.JConstantPool(stream); accessFlags = stream.readShort(); - // This class, super class and interfaces + // This class, super class and interfaces name = pool.lookupClass(stream.readShort()); superclassName = pool.lookupClass(stream.readShort()); interfaceNames = new String[stream.readShort()]; @@ -97,11 +101,17 @@ public class JClass extends JMember { for (int i = 0; i < methodsCount; ++i) addMethod(context.JMethod(this, stream)); + String fileName = null; int attributesCount = stream.readShort(); - for (int i = 0; i < attributesCount; ++i) - addAttribute(attributeFactory.newInstance(this, this, stream)); - - sourceFileName = null; + for (int i = 0; i < attributesCount; ++i) { + JAttribute attr = attributeFactory.newInstance(this, this, stream); + if (attr instanceof JSourceFileAttribute) + fileName = ((JSourceFileAttribute)attr).getFileName(); + else if (attr instanceof JInnerClassesAttribute) + innerClasses = (JInnerClassesAttribute)attr; + addAttribute(attr); + } + sourceFileName = fileName; } /** @@ -118,6 +128,12 @@ public class JClass extends JMember { public String[] getInterfaceNames() { return interfaceNames; } /** + * Gets the source file name of this class. + * @return The string representing the source file name of this class. + */ + public String getSourceFileName() { return sourceFileName; } + + /** * Gets the type of the objects that are instances of the class. * @return The type of the instances of the class. */ @@ -125,6 +141,30 @@ public class JClass extends JMember { public JClass getJClass() { return this; } + public boolean isPublic() { + return (accessFlags & JAccessFlags.ACC_PUBLIC) != 0; + } + + public boolean isPrivate() { + return (accessFlags & JAccessFlags.ACC_PRIVATE) != 0; + } + + public boolean isProtected() { + return (accessFlags & JAccessFlags.ACC_PROTECTED) != 0; + } + + public boolean isStatic() { + return (accessFlags & JAccessFlags.ACC_STATIC) != 0; + } + + public boolean isFinal() { + return (accessFlags & JAccessFlags.ACC_FINAL) != 0; + } + + public boolean isAbstract() { + return (accessFlags & JAccessFlags.ACC_ABSTRACT) != 0; + } + /** * Gets the version number of the class. * @param major The int representing the major part of the version number @@ -134,8 +174,8 @@ public class JClass extends JMember { */ public void setVersion(int major, int minor) { assert !frozen; - this.major = major; - this.minor = minor; + this.major = major; + this.minor = minor; } /** @@ -171,12 +211,12 @@ public class JClass extends JMember { * @return The boolean representing if the class is an interface or not. */ public boolean isInterface() { - return (accessFlags & JAccessFlags.ACC_INTERFACE) != 0; + return (accessFlags & JAccessFlags.ACC_INTERFACE) != 0; } public void addField(JField field) { assert !frozen; - fields.add(field); + fields.add(field); } /** @@ -191,7 +231,7 @@ public class JClass extends JMember { protected void addMethod(JMethod method) { assert !frozen; - methods.add(method); + methods.add(method); } /** @@ -223,6 +263,10 @@ public class JClass extends JMember { methods.remove(m); } + public JField[] getFields() { + return (JField[])fields.toArray(new JField[fields.size()]); + } + public JMethod[] getMethods() { return (JMethod[])methods.toArray(new JMethod[methods.size()]); } @@ -254,13 +298,13 @@ public class JClass extends JMember { if (!parent.mkdirs()) throw new IOException("cannot create directory " + parent); - FileOutputStream fStream = new FileOutputStream(file); + FileOutputStream fStream = new FileOutputStream(file); BufferedOutputStream bStream = new BufferedOutputStream(fStream); - DataOutputStream dStream = new DataOutputStream(bStream); - writeTo(dStream); - dStream.close(); + DataOutputStream dStream = new DataOutputStream(bStream); + writeTo(dStream); + dStream.close(); bStream.close(); - fStream.close(); + fStream.close(); } public void setBootstrapClass(String bootstrapClass) { @@ -276,44 +320,109 @@ public class JClass extends JMember { public void writeTo(DataOutputStream stream) throws IOException { if (!frozen) freeze(); - int thisClassIdx = pool.addClass(name); - int superClassIdx = pool.addClass(superclassName); - int[] interfacesIdx = new int[interfaceNames.length]; + int thisClassIdx = pool.addClass(name); + int superClassIdx = pool.addClass(superclassName); + int[] interfacesIdx = new int[interfaceNames.length]; - for (int i = 0; i < interfaceNames.length; ++i) - interfacesIdx[i] = pool.addClass(interfaceNames[i]); + for (int i = 0; i < interfaceNames.length; ++i) + interfacesIdx[i] = pool.addClass(interfaceNames[i]); pool.freeze(); - // Magic number. - stream.writeInt(MAGIC_NUMBER); - // Version - stream.writeShort(minor); - stream.writeShort(major); - // Constant pool - pool.writeTo(stream); - // Access flags - stream.writeShort(accessFlags); - - // This class, super class and interfaces - stream.writeShort(thisClassIdx); - stream.writeShort(superClassIdx); - stream.writeShort(interfacesIdx.length); - for (int i = 0; i < interfacesIdx.length; ++i) - stream.writeShort(interfacesIdx[i]); - - // Fields and methods - stream.writeShort(fields.size()); + // Magic number. + stream.writeInt(MAGIC_NUMBER); + // Version + stream.writeShort(minor); + stream.writeShort(major); + // Constant pool + pool.writeTo(stream); + // Access flags + stream.writeShort(accessFlags); + + // This class, super class and interfaces + stream.writeShort(thisClassIdx); + stream.writeShort(superClassIdx); + stream.writeShort(interfacesIdx.length); + for (int i = 0; i < interfacesIdx.length; ++i) + stream.writeShort(interfacesIdx[i]); + + // Fields and methods + stream.writeShort(fields.size()); Iterator fieldsIt = fields.iterator(); while (fieldsIt.hasNext()) ((JField)fieldsIt.next()).writeTo(stream); - stream.writeShort(methods.size()); + stream.writeShort(methods.size()); Iterator methodsIt = methods.iterator(); while (methodsIt.hasNext()) ((JMethod)methodsIt.next()).writeTo(stream); - // Attributes + // Attributes JAttribute.writeTo(attributes, stream); } + + // Follows javap output format for ClassFile. + /*@Override*/ public String toString() { + StringBuffer buf = new StringBuffer(); + if (sourceFileName != null) { + buf.append("Compiled from \""); + buf.append(sourceFileName); + buf.append("\"\n"); + } + buf.append(getMemberName()); + buf.append(toExternalName(getName())); + if (!isInterface()) { + buf.append(" extends "); + buf.append(toExternalName(getSuperclassName())); + } + if (interfaceNames.length > 0) { + if (isInterface()) buf.append(" extends "); + else buf.append(" implements "); + for (int i = 0; i < interfaceNames.length; ++i) { + if (i > 0) buf.append(","); + buf.append(toExternalName(interfaceNames[i])); + } + } + buf.append("\n"); + Iterator attrsIt = attributes.iterator(); + while (attrsIt.hasNext()) { + JAttribute attr = (JAttribute)attrsIt.next(); + buf.append(attr); + } + buf.append(" minor version: "); + buf.append(minor); + buf.append("\n major version: "); + buf.append(major); + buf.append("\n"); + buf.append(pool); + buf.append("\n{\n"); + JField[] jfields = getFields(); + for (int i = 0; i < jfields.length; ++i) { + if (i > 0) buf.append("\n"); + buf.append(jfields[i]); + } + buf.append("\n"); + JMethod[] jmethods = getMethods(); + for (int i = 0; i < jmethods.length; ++i) { + if (i > 0) buf.append("\n"); + buf.append(jmethods[i]); + } + buf.append("\n}\n"); + return buf.toString(); + } + + private String getMemberName() { + StringBuffer buf = new StringBuffer(); + if (isPublic()) buf.append("public "); + else if (isProtected()) buf.append("protected "); + else if (isPrivate()) buf.append("private "); + if (isInterface()) + buf.append("interface "); + else { + if (isAbstract()) buf.append("abstract "); + else if (isFinal()) buf.append("final "); + buf.append("class "); + } + return buf.toString(); + } } |