diff options
Diffstat (limited to 'src/de/fernflower/struct/gen/generics/GenericMain.java')
| -rw-r--r-- | src/de/fernflower/struct/gen/generics/GenericMain.java | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/src/de/fernflower/struct/gen/generics/GenericMain.java b/src/de/fernflower/struct/gen/generics/GenericMain.java new file mode 100644 index 0000000..4a2dab7 --- /dev/null +++ b/src/de/fernflower/struct/gen/generics/GenericMain.java @@ -0,0 +1,229 @@ +/* + * Fernflower - The Analytical Java Decompiler + * http://www.reversed-java.com + * + * (C) 2008 - 2010, Stiver + * + * This software is NEITHER public domain NOR free software + * as per GNU License. See license.txt for more details. + * + * This software is distributed WITHOUT ANY WARRANTY; without + * even the implied warranty of MERCHANTABILITY or FITNESS FOR + * A PARTICULAR PURPOSE. + */ + +package de.fernflower.struct.gen.generics; + +import java.util.ArrayList; +import java.util.List; + +import de.fernflower.code.CodeConstants; +import de.fernflower.main.DecompilerContext; +import de.fernflower.struct.StructClass; + +public class GenericMain { + + private static final String[] typeNames = new String[] { + "byte", + "char", + "double", + "float", + "int", + "long", + "short", + "boolean", + }; + + public static GenericClassDescriptor parseClassSignature(String signature) { + + GenericClassDescriptor descriptor = new GenericClassDescriptor(); + + signature = parseFormalParameters(signature, descriptor.fparameters, descriptor.fbounds); + + String supercl = GenericType.getNextType(signature); + descriptor.superclass = new GenericType(supercl); + + signature = signature.substring(supercl.length()); + while(signature.length() > 0) { + String superintr = GenericType.getNextType(signature); + descriptor.superinterfaces.add(new GenericType(superintr)); + signature = signature.substring(superintr.length()); + } + + return descriptor; + } + + public static GenericFieldDescriptor parseFieldSignature(String signature) { + GenericFieldDescriptor descriptor = new GenericFieldDescriptor(); + descriptor.type = new GenericType(signature); + return descriptor; + } + + public static GenericMethodDescriptor parseMethodSignature(String signature) { + + GenericMethodDescriptor descriptor = new GenericMethodDescriptor(); + + signature = parseFormalParameters(signature, descriptor.fparameters, descriptor.fbounds); + + int to = signature.indexOf(")"); + String pars = signature.substring(1, to); + signature = signature.substring(to+1); + + while(pars.length() > 0) { + String par = GenericType.getNextType(pars); + descriptor.params.add(new GenericType(par)); + pars = pars.substring(par.length()); + } + + String par = GenericType.getNextType(signature); + descriptor.ret = new GenericType(par); + signature = signature.substring(par.length()); + + if(signature.length() > 0) { + String[] excs = signature.split("\\^"); + + for(int i=1;i<excs.length;i++) { + descriptor.exceptions.add(new GenericType(excs[i])); + } + } + + return descriptor; + } + + private static String parseFormalParameters(String signature, List<String> fparameters, List<List<GenericType>> fbounds) { + + if(signature.charAt(0) != '<') { + return signature; + } + + int counter = 1; + int index = 1; + + loop: + while(index < signature.length()) { + switch(signature.charAt(index)) { + case '<': + counter++; + break; + case '>': + counter--; + if(counter == 0) { + break loop; + } + } + + index++; + } + + String value = signature.substring(1, index); + signature = signature.substring(index+1); + + while(value.length() > 0) { + int parto = value.indexOf(":"); + + String param = value.substring(0, parto); + value = value.substring(parto+1); + + List<GenericType> lstBounds = new ArrayList<GenericType>(); + + for(;;) { + if(value.charAt(0) == ':') { // empty superclass + lstBounds.add(new GenericType(CodeConstants.TYPE_OBJECT, 0, "java/lang/Object")); + value = value.substring(1); + } + + String bound = GenericType.getNextType(value); + lstBounds.add(new GenericType(bound)); + value = value.substring(bound.length()); + + + if(value.length() == 0 || value.charAt(0) != ':') { + break; + } else { + value = value.substring(1); + } + } + + fparameters.add(param); + fbounds.add(lstBounds); + } + + return signature; + } + + public static String getGenericCastTypeName(GenericType type) { + String s = getTypeName(type); + int dim = type.arraydim; + while(dim-->0) { + s+="[]"; + } + return s; + } + + public static String getTypeName(GenericType type) { + + int tp = type.type; + if(tp <= CodeConstants.TYPE_BOOLEAN) { + return typeNames[tp]; + } else if(tp == CodeConstants.TYPE_VOID) { + return "void"; + } else if(tp == CodeConstants.TYPE_GENVAR) { + return type.value; + } else if(tp == CodeConstants.TYPE_OBJECT) { + StringBuilder buffer = new StringBuilder(); + buffer.append(DecompilerContext.getImpcollector().getShortName(buildJavaClassName(type))); + + if(!type.getArguments().isEmpty()) { + buffer.append("<"); + for(int i=0;i<type.getArguments().size();i++) { + if(i>0) { + buffer.append(", "); + } + int wildcard = type.getWildcards().get(i); + if(wildcard != GenericType.WILDCARD_NO) { + buffer.append("?"); + + switch(wildcard){ + case GenericType.WILDCARD_EXTENDS: + buffer.append(" extends "); + break; + case GenericType.WILDCARD_SUPER: + buffer.append(" super "); + } + } + + GenericType genpar = type.getArguments().get(i); + if(genpar != null) { + buffer.append(GenericMain.getGenericCastTypeName(genpar)); + } + } + buffer.append(">"); + } + + return buffer.toString(); + } + + throw new RuntimeException("invalid type"); + } + + public static String buildJavaClassName(GenericType type) { + + String name = ""; + for(GenericType tp : type.getEnclosingClasses()) { + name += tp.value+"$"; + } + name+=type.value; + + String res = name.replace('/', '.'); + + if(res.indexOf("$") >=0) { + StructClass cl = DecompilerContext.getStructcontext().getClass(name); + if(cl == null || !cl.isOwn()) { + res = res.replace('$', '.'); + } + } + + return res; + } + +} |