/* * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved. * Copyright (c) 2010 JogAmp Community. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * - Redistribution of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistribution in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of Sun Microsystems, Inc. or the names of * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. * * You acknowledge that this software is not designed or intended for use * in the design, construction, operation or maintenance of any nuclear * facility. * * Sun gratefully acknowledges that this software was originally authored * and developed by Kenneth Bradley Russell and Christopher John Kline. */ package com.jogamp.gluegen; import com.jogamp.common.nio.Buffers; import com.jogamp.common.os.DynamicLookupHelper; import com.jogamp.common.os.MachineDataInfo; import java.io.*; import java.util.*; import java.text.MessageFormat; import com.jogamp.gluegen.ASTLocusTag.ASTLocusTagProvider; import com.jogamp.gluegen.Logging.LoggerIf; import com.jogamp.gluegen.cgram.types.*; import com.jogamp.gluegen.cgram.types.TypeComparator.AliasedSemanticSymbol; import java.nio.Buffer; import jogamp.common.os.MachineDataInfoRuntime; import static java.util.logging.Level.*; import static com.jogamp.gluegen.JavaEmitter.MethodAccess.*; // PROBLEMS: // - what if something returns 'const int *'? Could we // return an IntBuffer that has read-only behavior? Or do we copy the array // (but we don't know its size!). What do we do if it returns a non-const // int*? Should the user be allowed to write back to the returned pointer? // // - Non-const array types must be properly released with JNI_COMMIT // in order to see side effects if the array was copied. public class JavaEmitter implements GlueEmitter { private StructLayout layout; private Map canonMap; protected JavaConfiguration cfg; private boolean requiresStaticInitialization = false; /** * Style of code emission. Can emit everything into one class * (AllStatic), separate interface and implementing classes * (InterfaceAndImpl), only the interface (InterfaceOnly), or only * the implementation (ImplOnly). */ public enum EmissionStyle {AllStatic, InterfaceAndImpl, InterfaceOnly, ImplOnly} /** * Access control for emitted Java methods. */ public enum MethodAccess { PUBLIC("public"), PROTECTED("protected"), PRIVATE("private"), PACKAGE_PRIVATE("/* pp */"), PUBLIC_ABSTRACT("abstract"); public final String getJavaName() { return javaName; } MethodAccess(final String javaName) { this.javaName = javaName; } private final String javaName; } private String javaFileName; // of javaWriter or javaImplWriter private PrintWriter javaWriter; // Emits either interface or, in AllStatic mode, everything private PrintWriter javaImplWriter; // Only used in non-AllStatic modes for impl class private String cFileName; // of cWriter private PrintWriter cWriter; private final MachineDataInfo machDescJava = MachineDataInfo.StaticConfig.LP64_UNIX.md; private final MachineDataInfo.StaticConfig[] machDescTargetConfigs = MachineDataInfo.StaticConfig.values(); protected final LoggerIf LOG; public JavaEmitter() { LOG = Logging.getLogger(JavaEmitter.class.getPackage().getName(), JavaEmitter.class.getSimpleName()); } @Override public void readConfigurationFile(final String filename) throws Exception { cfg = createConfig(); cfg.read(filename); } @Override public JavaConfiguration getConfiguration() { return cfg; } class ConstFuncRenamer implements SymbolFilter { private List constants; private List functions; @Override public List getConstants() { return constants; } @Override public List getFunctions() { return functions; } private List filterSymbolsInt(final List inList, final List outList) { final JavaConfiguration cfg = getConfig(); final HashMap symMap = new HashMap(100); for (final T sym : inList) { final String origName = sym.getName(); final String newName = cfg.getJavaSymbolRename(origName); final T dupSym; if( null != newName ) { // Alias Name dupSym = symMap.get(newName); if( null != dupSym ) { // only rename to allow 'equalSemantics' to not care .. sym.rename(newName); } } else { // Original Name dupSym = symMap.get(origName); } if( null != dupSym ) { // Duplicate alias .. check if( !dupSym.equalSemantics(sym) ) { final ASTLocusTag loc; final String preLoc; if( sym instanceof ASTLocusTagProvider ) { loc = ((ASTLocusTagProvider)sym).getASTLocusTag(); } else { loc = null; } if( dupSym instanceof ASTLocusTagProvider ) { preLoc = String.format(",%n %s: previous definition is here", ((ASTLocusTagProvider)dupSym).getASTLocusTag().toString(new StringBuilder(), "note", true)); } else { preLoc = ""; } final String mode = null != newName ? "alias" : "orig"; final String message = String.format("Duplicate Name (%s) w/ incompatible value:%n this '%s',%n have '%s'%s", mode, sym.getAliasedString(), dupSym.getAliasedString(), preLoc); throw new GlueGenException(message, loc); } } if( null != newName ) { // Alias Name if( null != dupSym ) { // Duplicate alias .. add aliased name dupSym.addAliasedName(origName); } else { // No duplicate .. rename and add sym.rename(newName); symMap.put(newName, sym); } } else { // Original Name if( null != dupSym ) { // Duplicate orig .. drop } else { // No duplicate orig .. add symMap.put(origName, sym); } } } outList.addAll(symMap.values()); // sort constants to make them easier to find in native code Collections.sort(outList, new Comparator() { @Override public int compare(final T o1, final T o2) { return o1.getName().compareTo(o2.getName()); } }); return outList; } @Override public void filterSymbols(final List inConstList, final List inFuncList) { constants = filterSymbolsInt(inConstList, new ArrayList(100)); functions = filterSymbolsInt(inFuncList, new ArrayList(100)); } } @Override public void beginEmission(final GlueEmitterControls controls) throws IOException { // Handle renaming of constants and functions controls.runSymbolFilter(new ConstFuncRenamer()); // Request emission of any structs requested for (final String structs : cfg.forcedStructs()) { controls.forceStructEmission(structs); } if (!cfg.structsOnly()) { try { openWriters(); } catch (final Exception e) { throw new RuntimeException("Unable to open files for writing", e); } emitAllFileHeaders(); } } @Override public void endEmission() { if (!cfg.structsOnly()) { emitAllFileFooters(); try { closeWriters(); } catch (final Exception e) { throw new RuntimeException("Unable to close open files", e); } } } @Override public void beginDefines() throws Exception { if ((cfg.allStatic() || cfg.emitInterface()) && !cfg.structsOnly()) { javaWriter().println(); } } protected static int getJavaRadix(final String name, final String value) { // FIXME: need to handle when type specifier is in last char (e.g., // "1.0d or 2759L", because parseXXX() methods don't allow the type // specifier character in the string. // //char lastChar = value.charAt(value.length()-1); try { // see if it's a long or int int radix; String parseValue; // FIXME: are you allowed to specify hex/octal constants with // negation, e.g. "-0xFF" or "-056"? If so, need to modify the // following "if(..)" checks and parseValue computation if (value.startsWith("0x") || value.startsWith("0X")) { radix = 16; parseValue = value.substring(2); } else if (value.startsWith("0") && value.length() > 1) { // TODO: is "0" the prefix in C to indicate octal??? radix = 8; parseValue = value.substring(1); } else { radix = 10; parseValue = value; } //System.err.println("parsing " + value + " as long w/ radix " + radix); Long.parseLong(parseValue, radix); return radix; } catch (final NumberFormatException e) { try { // see if it's a double or float Double.parseDouble(value); return 10; } catch (final NumberFormatException e2) { throw new RuntimeException( "Cannot emit define \""+name+"\": value \""+value+ "\" cannot be assigned to a int, long, float, or double", e2); } } } protected static Object getJavaValue(final String name, final String value) { // "calculates" the result type of a simple expression // example: (2+3)-(2.0f-3.0) -> Double // example: (1 << 2) -> Integer final Scanner scanner = new Scanner(value).useDelimiter("[+-/*/> 1) { // TODO: is "0" the prefix in C to indicate octal??? radix = 8; parseValue = value.substring(1); } else { radix = 10; parseValue = value; } if(lastChar == 'u' || lastChar == 'U') { parseValue = parseValue.substring(0, parseValue.length()-1); } //System.err.println("parsing " + value + " as long w/ radix " + radix); final long longVal = Long.parseLong(parseValue, radix); // if constant is small enough, store it as an int instead of a long if (longVal > Integer.MIN_VALUE && longVal < Integer.MAX_VALUE) { return (int)longVal; } return longVal; } catch (final NumberFormatException e) { try { // see if it's a double or float final double dVal = Double.parseDouble(value); final double absVal = Math.abs(dVal); // if constant is small enough, store it as a float instead of a double if (absVal < Float.MIN_VALUE || absVal > Float.MAX_VALUE) { return new Double(dVal); } return new Float((float) dVal); } catch (final NumberFormatException e2) { throw new RuntimeException( "Cannot emit define \""+name+"\": value \""+value+ "\" cannot be assigned to a int, long, float, or double", e2); } } } protected static String getJavaType(final String name, final String value) { final Object oval = getJavaValue(name, value); return getJavaType(name, oval); } protected static String getJavaType(final String name, final Object oval) { if(oval instanceof Integer) { return "int"; } else if(oval instanceof Long) { return "long"; } else if(oval instanceof Float) { return "float"; } else if(oval instanceof Double) { return "double"; } throw new RuntimeException( "Cannot emit define (2) \""+name+"\": value \""+oval+ "\" cannot be assigned to a int, long, float, or double"); } /** Mangle a class, package or function name for JNI usage, i.e. replace all '.' w/ '_' */ protected static String jniMangle(final String name) { return name.replaceAll("_", "_1").replace('.', '_'); } /** Returns the JNI method prefix consisting our of mangled package- and class-name */ protected static String getJNIMethodNamePrefix(final String javaPackageName, final String javaClassName) { return "Java_"+jniMangle(javaPackageName)+"_"+jniMangle(javaClassName); } @Override public void emitDefine(final ConstantDefinition def, final String optionalComment) throws Exception { if (cfg.allStatic() || cfg.emitInterface()) { // TODO: Some defines (e.g., GL_DOUBLE_EXT in gl.h) are defined in terms // of other defines -- should we emit them as references to the original // define (not even sure if the lexer supports this)? Right now they're // emitted as the numeric value of the original definition. If we decide // emit them as references we'll also have to emit them in the correct // order. It's probably not an issue right now because the emitter // currently only emits only numeric defines -- if it handled #define'd // objects it would make a bigger difference. final String name = def.getName(); String value = def.getValue(); if ( !cfg.shouldIgnoreInInterface(def) ) { final String type = getJavaType(name, value); if (optionalComment != null && optionalComment.length() != 0) { javaWriter().println(" /** " + optionalComment + " */"); } String suffix = ""; if(!value.endsWith(")")) { if (type.equals("float") && !value.endsWith("f")) { suffix = "f"; }else if(value.endsWith("u") || value.endsWith("U")) { value = value.substring(0, value.length()-1); } } javaWriter().println(" public static final " + type + " " + name + " = " + value + suffix + ";"); } } } @Override public void endDefines() throws Exception { } @Override public void beginFunctions(final TypeDictionary typedefDictionary, final TypeDictionary structDictionary, final Map canonMap) throws Exception { // this.typedefDictionary = typedefDictionary; this.canonMap = canonMap; this.requiresStaticInitialization = false; // reset if ((cfg.allStatic() || cfg.emitInterface()) && !cfg.structsOnly()) { javaWriter().println(); } } @Override public Iterator emitFunctions(final List funcsToBind) throws Exception { // Bind all the C funcs to Java methods final HashSet methodBindingSet = new HashSet(); final ArrayList methodBindingEmitters = new ArrayList(2*funcsToBind.size()); { int i=0; for (final FunctionSymbol cFunc : funcsToBind) { // Check to see whether this function should be ignored if ( !cfg.shouldIgnoreInImpl(cFunc) ) { methodBindingEmitters.addAll(generateMethodBindingEmitters(methodBindingSet, cFunc)); LOG.log(INFO, cFunc.getASTLocusTag(), "Non-Ignored Impl[{0}]: {1}", i++, cFunc); } } } // Emit all the methods { int i=0; for (final FunctionEmitter emitter : methodBindingEmitters) { try { final FunctionSymbol cFunc = emitter.getCSymbol(); if ( !emitter.isInterface() || !cfg.shouldIgnoreInInterface(cFunc) ) { emitter.emit(); emitter.getDefaultOutput().println(); // put newline after method body LOG.log(INFO, cFunc.getASTLocusTag(), "Non-Ignored Intf[{0}]: {1}", i++, cFunc); } } catch (final Exception e) { throw new GlueGenException( "Error while emitting binding for \"" + emitter.getCSymbol().getAliasedString() + "\"", emitter.getCSymbol().getASTLocusTag(), e); } } } // Return the list of FunctionSymbols that we generated gluecode for return funcsToBind.iterator(); } /** * Create the object that will read and store configuration information for * this JavaEmitter. */ protected JavaConfiguration createConfig() { return new JavaConfiguration(); } /** * Get the configuration information for this JavaEmitter. */ protected JavaConfiguration getConfig() { return cfg; } /** * Returns true if implementation (java and native-code) * requires {@link #staticClassInitCodeCCode} and {@link #staticClassInitCallJavaCode} * and have initializeImpl() being called at static class initialization. *

* This is currently true, if one of the following method returns true *

    *
  • {@link MethodBinding#signatureRequiresStaticInitialization() one of the binding's signature requires it}
    • *
  • {@link JavaConfiguration#forceStaticInitCode(String)}
    • *
*

*/ protected final boolean requiresStaticInitialization(final String clazzName) { return requiresStaticInitialization || cfg.forceStaticInitCode(clazzName); } /** * Generates the public emitters for this MethodBinding which will * produce either simply signatures (for the interface class, if * any) or function definitions with or without a body (depending on * whether or not the implementing function can go directly to * native code because it doesn't need any processing of the * outgoing arguments). */ protected void generatePublicEmitters(final MethodBinding binding, final List allEmitters, final boolean signatureOnly) { final FunctionSymbol cSymbol = binding.getCSymbol(); if ( !signatureOnly && cfg.manuallyImplement(cSymbol) ) { // We only generate signatures for manually-implemented methods; // user provides the implementation return; } // It's possible we may not need a body even if signatureOnly is // set to false; for example, if the routine doesn't take any // arrays or buffers as arguments final boolean isUnimplemented = cfg.isUnimplemented(cSymbol); final List prologue = cfg.javaPrologueForMethod(binding, false, false); final List epilogue = cfg.javaEpilogueForMethod(binding, false, false); final boolean needsBody = isUnimplemented || binding.needsNIOWrappingOrUnwrapping() || binding.signatureUsesJavaPrimitiveArrays() || null != prologue || null != epilogue; if( !requiresStaticInitialization ) { requiresStaticInitialization = binding.signatureRequiresStaticInitialization(); if( requiresStaticInitialization ) { LOG.log(INFO, cSymbol.getASTLocusTag(), "StaticInit Trigger.1 \"{0}\"", binding); } } final boolean emitBody = !signatureOnly && needsBody; final boolean isNativeMethod = !isUnimplemented && !needsBody && !signatureOnly; final MethodAccess accessControl; if ( !signatureOnly && null != binding.getDelegationImplName() ) { // private access for delegation implementation methods accessControl = PRIVATE; } else { accessControl = cfg.accessControl(binding.getName()); } // We should not emit anything except public APIs into interfaces if ( signatureOnly && PUBLIC != accessControl ) { return; } final PrintWriter writer = ((signatureOnly || cfg.allStatic()) ? javaWriter() : javaImplWriter()); final JavaMethodBindingEmitter emitter = new JavaMethodBindingEmitter(binding, writer, cfg.runtimeExceptionType(), cfg.unsupportedExceptionType(), emitBody, // emitBody cfg.tagNativeBinding(), false, // eraseBufferAndArrayTypes cfg.useNIOOnly(binding.getName()), cfg.useNIODirectOnly(binding.getName()), false, // forDirectBufferImplementation false, // forIndirectBufferAndArrayImplementation isUnimplemented, // isUnimplemented signatureOnly, // isInterface isNativeMethod, // isNativeMethod false, // isPrivateNativeMethod cfg); switch (accessControl) { case PUBLIC: emitter.addModifier(JavaMethodBindingEmitter.PUBLIC); break; case PROTECTED: emitter.addModifier(JavaMethodBindingEmitter.PROTECTED); break; case PRIVATE: emitter.addModifier(JavaMethodBindingEmitter.PRIVATE); break; default: break; // package-private adds no modifiers } if (cfg.allStatic()) { emitter.addModifier(FunctionEmitter.STATIC); } if (isNativeMethod) { emitter.addModifier(JavaMethodBindingEmitter.NATIVE); } emitter.setReturnedArrayLengthExpression(cfg.returnedArrayLength(binding.getName())); emitter.setPrologue(prologue); emitter.setEpilogue(epilogue); allEmitters.add(emitter); } /** * Generates the private emitters for this MethodBinding. On the * Java side these will simply produce signatures for native * methods. On the C side these will create the emitters which will * write the JNI code to interface to the functions. We need to be * careful to make the signatures all match up and not produce too * many emitters which would lead to compilation errors from * creating duplicated methods / functions. */ protected void generatePrivateEmitters(final MethodBinding binding, final List allEmitters) { final FunctionSymbol cSymbol = binding.getCSymbol(); if (cfg.manuallyImplement(cSymbol)) { // Don't produce emitters for the implementation class return; } final boolean hasPrologueOrEpilogue = cfg.javaPrologueForMethod(binding, false, false) != null || cfg.javaEpilogueForMethod(binding, false, false) != null ; if ( !cfg.isUnimplemented( cSymbol ) ) { if( !requiresStaticInitialization ) { requiresStaticInitialization = binding.signatureRequiresStaticInitialization(); if( requiresStaticInitialization ) { LOG.log(INFO, cSymbol.getASTLocusTag(), "StaticInit Trigger.2 \"{0}\"", binding); } } // If we already generated a public native entry point for this // method, don't emit another one // // !binding.signatureUsesJavaPrimitiveArrays(): // If the binding uses primitive arrays, we are going to emit // the private native entry point for it along with the version // taking only NIO buffers if ( !binding.signatureUsesJavaPrimitiveArrays() && ( binding.needsNIOWrappingOrUnwrapping() || hasPrologueOrEpilogue ) ) { final PrintWriter writer = (cfg.allStatic() ? javaWriter() : javaImplWriter()); // (Always) emit the entry point taking only direct buffers final JavaMethodBindingEmitter emitter = new JavaMethodBindingEmitter(binding, writer, cfg.runtimeExceptionType(), cfg.unsupportedExceptionType(), false, // emitBody cfg.tagNativeBinding(), true, // eraseBufferAndArrayTypes cfg.useNIOOnly(binding.getName()), cfg.useNIODirectOnly(binding.getName()), true, // forDirectBufferImplementation false, // forIndirectBufferAndArrayImplementation false, // isUnimplemented false, // isInterface true, // isNativeMethod true, // isPrivateNativeMethod cfg); emitter.addModifier(JavaMethodBindingEmitter.PRIVATE); if (cfg.allStatic()) { emitter.addModifier(FunctionEmitter.STATIC); } emitter.addModifier(JavaMethodBindingEmitter.NATIVE); emitter.setReturnedArrayLengthExpression(cfg.returnedArrayLength(binding.getName())); allEmitters.add(emitter); } // Now generate the C emitter(s). We need to produce one for every // Java native entry point (public or private). The only // situations where we don't produce one are (a) when the method // is unimplemented, and (b) when the signature contains primitive // arrays, since the latter is handled by the method binding // variant taking only NIO Buffers. if ( !binding.signatureUsesJavaPrimitiveArrays() ) { // Generate a binding without mixed access (NIO-direct, -indirect, array) final CMethodBindingEmitter cEmitter = new CMethodBindingEmitter(binding, cWriter(), cfg.implPackageName(), cfg.implClassName(), true, // NOTE: we always disambiguate with a suffix now, so this is optional cfg.allStatic(), (binding.needsNIOWrappingOrUnwrapping() || hasPrologueOrEpilogue), !cfg.useNIODirectOnly(binding.getName()), machDescJava, getConfiguration()); prepCEmitter(binding.getName(), binding.getJavaReturnType(), cEmitter); allEmitters.add(cEmitter); } } } protected void prepCEmitter(final String returnSizeLookupName, final JavaType javaReturnType, final CMethodBindingEmitter cEmitter) { // See whether we need an expression to help calculate the // length of any return type if (javaReturnType.isNIOBuffer() || javaReturnType.isCompoundTypeWrapper()) { // See whether capacity has been specified final String capacity = cfg.returnValueCapacity(returnSizeLookupName); if (capacity != null) { cEmitter.setReturnValueCapacityExpression( new MessageFormat(capacity) ); } } else if (javaReturnType.isArray() || javaReturnType.isArrayOfCompoundTypeWrappers()) { // NOTE: adding a check here because the CMethodBindingEmitter // also doesn't yet handle returning scalar arrays. In order // to implement this, return the type as a Buffer instead // (i.e., IntBuffer, FloatBuffer) and add code as necessary. if (javaReturnType.isPrimitiveArray()) { throw new RuntimeException("Primitive array return types not yet supported"); } // See whether length has been specified final String len = cfg.returnValueLength(returnSizeLookupName); if (len != null) { cEmitter.setReturnValueLengthExpression( new MessageFormat(len) ); } } cEmitter.setTemporaryCVariableDeclarations(cfg.temporaryCVariableDeclarations(returnSizeLookupName)); cEmitter.setTemporaryCVariableAssignments(cfg.temporaryCVariableAssignments(returnSizeLookupName)); } /** * Generate all appropriate Java bindings for the specified C function * symbols. */ protected List generateMethodBindingEmitters(final Set methodBindingSet, final FunctionSymbol sym) throws Exception { final ArrayList allEmitters = new ArrayList(); try { // Get Java binding for the function final MethodBinding mb = bindFunction(sym, machDescJava, null, null); // JavaTypes representing C pointers in the initial // MethodBinding have not been lowered yet to concrete types final List bindings = expandMethodBinding(mb); for (final MethodBinding binding : bindings) { if(!methodBindingSet.add(binding)) { // skip .. already exisiting binding .. continue; } if (cfg.allStatic() && binding.hasContainingType()) { // This should not currently happen since structs are emitted using a different mechanism throw new IllegalArgumentException("Cannot create binding in AllStatic mode because method has containing type: \"" + binding + "\""); } // The structure of the generated glue code looks something like this: // Simple method (no arrays, void pointers, etc.): // Interface class: // public void fooMethod(); // Implementation class: // public native void fooMethod(); // // Method taking void* argument: // Interface class: // public void fooMethod(Buffer arg); // Implementation class: // public void fooMethod(Buffer arg) { // ... bounds checks, etc. ... // // boolean arg_direct = arg != null && Buffers.isDirect(arg); // // fooMethod0(arg_direct?arg:Buffers.getArray(arg), // arg_direct?Buffers.getDirectBufferByteOffset(arg):Buffers.getIndirectBufferByteOffset(arg), // arg_direct, // ... ); // } // private native void fooMethod1(Object arg, int arg_byte_offset, boolean arg_is_direct, ...); // // Method taking primitive array argument: // Interface class: // public void fooMethod(int[] arg, int arg_offset); // public void fooMethod(IntBuffer arg); // Implementing class: // public void fooMethod(int[] arg, int arg_offset) { // ... range checks, etc. ... // fooMethod1(arg, SIZEOF_INT * arg_offset); // } // public void fooMethod(IntBuffer arg) { // ... bounds checks, etc. ... // // boolean arg_direct = BufferFactory.isDirect(arg); // // fooMethod1(arg_direct?arg:BufferFactory.getArray(arg), // arg_direct?BufferFactory.getDirectBufferByteOffset(arg):BufferFactory.getIndirectBufferByteOffset(arg), // arg_direct, // ... ); // } // private native void fooMethod1(Object arg, int arg_byte_offset, boolean arg_is_direct, ...); // // Note in particular that the public entry point taking an // array is merely a special case of the indirect buffer case. if (cfg.emitInterface()) { generatePublicEmitters(binding, allEmitters, true); } if (cfg.emitImpl()) { generatePublicEmitters(binding, allEmitters, false); generatePrivateEmitters(binding, allEmitters); } } // end iteration over expanded bindings } catch (final Exception e) { throw new GlueGenException("Error while generating bindings for \"" + sym + "\"", sym.getASTLocusTag(), e); } return allEmitters; } @Override public void endFunctions() throws Exception { if (!cfg.structsOnly()) { if (cfg.allStatic() || cfg.emitInterface()) { emitCustomJavaCode(javaWriter(), cfg.className()); } if (!cfg.allStatic() && cfg.emitImpl()) { emitCustomJavaCode(javaImplWriter(), cfg.implClassName()); } if ( cfg.allStatic() ) { emitJavaInitCode(javaWriter(), cfg.className()); } else if ( cfg.emitImpl() ) { emitJavaInitCode(javaImplWriter(), cfg.implClassName()); } if ( cfg.emitImpl() ) { emitCInitCode(cWriter(), getImplPackageName(), cfg.implClassName()); } } } @Override public void beginStructLayout() throws Exception {} @Override public void layoutStruct(final CompoundType t) throws Exception { getLayout().layout(t); } @Override public void endStructLayout() throws Exception {} @Override public void beginStructs(final TypeDictionary typedefDictionary, final TypeDictionary structDictionary, final Map canonMap) throws Exception { // this.typedefDictionary = typedefDictionary; this.canonMap = canonMap; } @Override public void emitStruct(final CompoundType structCType, final Type structCTypedefPtr) throws Exception { final String structCTypeName, typedefedName; { final String _name = structCType.getName(); if ( null != structCTypedefPtr && null != structCTypedefPtr.getName() ) { // always use typedef'ed name if available typedefedName = structCTypedefPtr.getName(); structCTypeName = typedefedName; } else { // fall back to actual struct type name typedefedName = null; structCTypeName = _name; } LOG.log(INFO, structCType.getASTLocusTag(), "Struct emission of structCType {0}", structCType); LOG.log(INFO, structCType.getASTLocusTag()," structCTypedefPtr {0}", structCTypedefPtr); LOG.log(INFO, structCType.getASTLocusTag()," : structCTypeName \"{0}\" -> typedefedName \"{1}\" -> \"{2}\"", _name, typedefedName, structCTypeName); if ( null == structCTypeName ) { LOG.log(INFO, structCType.getASTLocusTag(), "skipping emission of unnamed struct {0} w/o typedef", structCType); return; } final AliasedSymbol.AliasedSymbolImpl aliases = new AliasedSymbol.AliasedSymbolImpl(structCTypeName); aliases.addAliasedName(_name); aliases.addAliasedName(typedefedName); if ( cfg.shouldIgnoreInInterface(aliases) ) { LOG.log(INFO, structCType.getASTLocusTag(), "skipping emission of ignored \"{0}\": {1}", aliases, structCType); return; } } if( null != structCTypedefPtr && isOpaque(structCTypedefPtr) ) { LOG.log(INFO, structCType.getASTLocusTag(), "skipping emission of opaque typedef {0}", structCTypedefPtr); return; } if( isOpaque(structCType) ) { LOG.log(INFO, structCType.getASTLocusTag(), "skipping emission of opaque c-struct {0}", structCType); return; } final Type containingCType; { // NOTE: Struct Name Resolution (JavaEmitter, HeaderParser) final Type aptr; int mode; if( null != typedefedName ) { aptr = structCTypedefPtr; mode = 1; } else { aptr = new PointerType(SizeThunk.POINTER, structCType, 0); aptr.setTypedefName(typedefedName); mode = 2; } containingCType = canonicalize(aptr); LOG.log(INFO, structCType.getASTLocusTag(), "containingCType[{0}]: {1} -canon-> {2}", mode, aptr, containingCType); } final JavaType containingJType = typeToJavaType(containingCType, null); if( containingJType.isOpaqued() ) { LOG.log(INFO, structCType.getASTLocusTag(), "skipping emission of opaque {0}, {1}", containingJType, structCType); return; } if( !containingJType.isCompoundTypeWrapper() ) { LOG.log(WARNING, structCType.getASTLocusTag(), "skipping emission of non-compound {0}, {1}", containingJType, structCType); return; } final String containingJTypeName = containingJType.getName(); LOG.log(INFO, structCType.getASTLocusTag(), "perform emission of \"{0}\" -> \"{1}\": {2}", structCTypeName, containingJTypeName, structCType); if( 0 == structCType.getNumFields() ) { LOG.log(INFO, structCType.getASTLocusTag(), "emission of \"{0}\" with zero fields {1}", containingJTypeName, structCType); } this.requiresStaticInitialization = false; // reset // machDescJava global MachineDataInfo is the one used to determine // the sizes of the primitive types seen in the public API in Java. // For example, if a C long is an element of a struct, it is the size // of a Java int on a 32-bit machine but the size of a Java long // on a 64-bit machine. To support both of these sizes with the // same API, the abstract base class must take and return a Java // long from the setter and getter for this field. However the // implementation on a 32-bit platform must downcast this to an // int and set only an int's worth of data in the struct. // // The machDescTarget MachineDataInfo is the one used to determine how // much data to set in or get from the struct and exactly from // where it comes. // // Note that machDescJava MachineDataInfo is always 64bit unix, // which complies w/ Java types. boolean needsNativeCode = false; // Native code for calls through function pointers gets emitted // into the abstract base class; Java code which accesses fields // gets emitted into the concrete classes for (int i = 0; i < structCType.getNumFields(); i++) { final Field field = structCType.getField(i); final Type fieldType = field.getType(); final String cfgFieldName0 = JavaConfiguration.canonicalStructFieldSymbol(structCTypeName, field.getName()); if (!cfg.shouldIgnoreInInterface(cfgFieldName0)) { final String renamed = cfg.getJavaSymbolRename(cfgFieldName0); final String fieldName = renamed==null ? field.getName() : renamed; final String cfgFieldName1 = JavaConfiguration.canonicalStructFieldSymbol(structCTypeName, fieldName); if ( fieldType.isFunctionPointer() || fieldType.isPointer() || requiresGetCStringLength(fieldType, cfgFieldName1) ) { needsNativeCode = true; break; } } } final String structClassPkgName = cfg.packageForStruct(structCTypeName); final PrintWriter javaWriter; final PrintWriter jniWriter; try { javaWriter = openFile(cfg.javaOutputDir() + File.separator + CodeGenUtils.packageAsPath(structClassPkgName) + File.separator + containingJTypeName + ".java", containingJTypeName); if( null == javaWriter ) { // suppress output if openFile deliberately returns null. return; } CodeGenUtils.emitAutogeneratedWarning(javaWriter, this); if (needsNativeCode) { String nRoot = cfg.nativeOutputDir(); if (cfg.nativeOutputUsesJavaHierarchy()) { nRoot += File.separator + CodeGenUtils.packageAsPath(cfg.packageName()); } jniWriter = openFile(nRoot + File.separator + containingJTypeName + "_JNI.c", containingJTypeName); CodeGenUtils.emitAutogeneratedWarning(jniWriter, this); emitCHeader(jniWriter, structClassPkgName, containingJTypeName); } else { jniWriter = null; } } catch(final Exception e) { throw new RuntimeException("Unable to open files for emission of struct class", e); } javaWriter.println(); javaWriter.println("package " + structClassPkgName + ";"); javaWriter.println(); javaWriter.println("import java.nio.*;"); javaWriter.println(); javaWriter.println("import " + cfg.gluegenRuntimePackage() + ".*;"); javaWriter.println("import " + DynamicLookupHelper.class.getPackage().getName() + ".*;"); javaWriter.println("import " + Buffers.class.getPackage().getName() + ".*;"); javaWriter.println("import " + MachineDataInfoRuntime.class.getName() + ";"); javaWriter.println(); final List imports = cfg.imports(); for (final String str : imports) { javaWriter.print("import "); javaWriter.print(str); javaWriter.println(";"); } javaWriter.println(); final List javadoc = cfg.javadocForClass(containingJTypeName); for (final String doc : javadoc) { javaWriter.println(doc); } javaWriter.print("public class " + containingJTypeName + " "); boolean firstIteration = true; final List userSpecifiedInterfaces = cfg.implementedInterfaces(containingJTypeName); for (final String userInterface : userSpecifiedInterfaces) { if (firstIteration) { javaWriter.print("implements "); } firstIteration = false; javaWriter.print(userInterface); javaWriter.print(" "); } javaWriter.println("{"); javaWriter.println(); javaWriter.println(" StructAccessor accessor;"); javaWriter.println(); final String cfgMachDescrIdxCode = cfg.returnStructMachineDataInfoIndex(containingJTypeName); final String machDescrIdxCode = null != cfgMachDescrIdxCode ? cfgMachDescrIdxCode : "private static final int mdIdx = MachineDataInfoRuntime.getStatic().ordinal();"; javaWriter.println(" "+machDescrIdxCode); javaWriter.println(" private final MachineDataInfo md;"); javaWriter.println(); // generate all offset and size arrays generateOffsetAndSizeArrays(javaWriter, " ", containingJTypeName, structCType, null, null); /* w/o offset */ if( GlueGen.debug() ) { System.err.printf("SE.__: structCType %s%n", structCType.getDebugString()); System.err.printf("SE.__: contCTypeName %s%n", containingCType.getDebugString()); System.err.printf("SE.__: contJTypeName %s%n", containingJType.getDebugString()); } for (int i = 0; i < structCType.getNumFields(); i++) { final Field field = structCType.getField(i); final Type fieldType = field.getType(); final String cfgFieldName0 = JavaConfiguration.canonicalStructFieldSymbol(structCTypeName, field.getName()); if ( !cfg.shouldIgnoreInInterface(cfgFieldName0) ) { final String renamed = cfg.getJavaSymbolRename(cfgFieldName0); final String fieldName = null==renamed ? field.getName() : renamed; final String cfgFieldName1 = JavaConfiguration.canonicalStructFieldSymbol(structCTypeName, fieldName); if (fieldType.isFunctionPointer()) { // no offset/size for function pointer .. if( GlueGen.debug() ) { System.err.printf("SE.os.%02d: %s / %s, %s (%s)%n", (i+1), field, cfgFieldName1, fieldType.getDebugString(), "SKIP FuncPtr"); } } else if (fieldType.isCompound()) { // FIXME: will need to support this at least in order to // handle the union in jawt_Win32DrawingSurfaceInfo (fabricate // a name?) if (fieldType.getName() == null) { throw new GlueGenException("Anonymous structs as fields not supported yet, field \"" + cfgFieldName1 + "\", "+fieldType.getDebugString(), fieldType.getASTLocusTag()); } if( GlueGen.debug() ) { System.err.printf("SE.os.%02d: %s / %s, %s (%s)%n", (i+1), field, cfgFieldName1, fieldType.getDebugString(), "compound"); } generateOffsetAndSizeArrays(javaWriter, " ", fieldName, fieldType, field, null); } else if (fieldType.isArray()) { final Type baseElementType = field.getType().asArray().getBaseElementType(); if( GlueGen.debug() ) { System.err.printf("SE.os.%02d: %s / %s, %s (%s)%n", (i+1), field, cfgFieldName1, fieldType.getDebugString(), "array"); System.err.printf("SE.os.%02d: baseType %s%n", (i+1), baseElementType.getDebugString()); } generateOffsetAndSizeArrays(javaWriter, " ", fieldName, fieldType, field, null); } else { final JavaType externalJavaType; try { externalJavaType = typeToJavaType(fieldType, machDescJava); } catch (final Exception e) { throw new GlueGenException("Error occurred while creating accessor for field \"" + cfgFieldName1 + "\", "+fieldType.getDebugString(), fieldType.getASTLocusTag(), e); } if( GlueGen.debug() ) { System.err.printf("SE.os.%02d: %s / %s, %s (%s)%n", (i+1), field, cfgFieldName1, fieldType.getDebugString(), "MISC"); System.err.printf("SE.os.%02d: javaType %s%n", (i+1), externalJavaType.getDebugString()); } if (externalJavaType.isPrimitive()) { // Primitive type generateOffsetAndSizeArrays(javaWriter, " ", fieldName, null, field, null); /* w/o size */ generateOffsetAndSizeArrays(javaWriter, "//", fieldName, fieldType, null, null); } else if (externalJavaType.isCPrimitivePointerType()) { if( requiresGetCStringLength(fieldType, cfgFieldName1) ) { generateOffsetAndSizeArrays(javaWriter, " ", fieldName, null, field, null); /* w/o size */ generateOffsetAndSizeArrays(javaWriter, "//", fieldName, fieldType, null, "// "+externalJavaType.getDebugString()); } else { generateOffsetAndSizeArrays(javaWriter, "//", fieldName, fieldType, field, "// "+externalJavaType.getDebugString()); } } else { generateOffsetAndSizeArrays(javaWriter, " ", fieldName, null, field, null); /* w/o size */ generateOffsetAndSizeArrays(javaWriter, "//", fieldName, fieldType, null, "// "+externalJavaType.getDebugString()); } } } else if( GlueGen.debug() ) { System.err.printf("SE.os.%02d: %s, %s (IGNORED)%n", (i+1), field, fieldType.getDebugString()); } } javaWriter.println(); // getDelegatedImplementation if( !cfg.manuallyImplement(JavaConfiguration.canonicalStructFieldSymbol(containingJTypeName, "size")) ) { javaWriter.println(" public static int size() {"); javaWriter.println(" return "+containingJTypeName+"_size[mdIdx];"); javaWriter.println(" }"); javaWriter.println(); } if( !cfg.manuallyImplement(JavaConfiguration.canonicalStructFieldSymbol(containingJTypeName, "create")) ) { javaWriter.println(" public static " + containingJTypeName + " create() {"); javaWriter.println(" return create(Buffers.newDirectByteBuffer(size()));"); javaWriter.println(" }"); javaWriter.println(); javaWriter.println(" public static " + containingJTypeName + " create(java.nio.ByteBuffer buf) {"); javaWriter.println(" return new " + containingJTypeName + "(buf);"); javaWriter.println(" }"); javaWriter.println(); } if( !cfg.manuallyImplement(JavaConfiguration.canonicalStructFieldSymbol(containingJTypeName, containingJTypeName)) ) { javaWriter.println(" " + containingJTypeName + "(java.nio.ByteBuffer buf) {"); javaWriter.println(" md = MachineDataInfo.StaticConfig.values()[mdIdx].md;"); javaWriter.println(" accessor = new StructAccessor(buf);"); javaWriter.println(" }"); javaWriter.println(); } javaWriter.println(" public java.nio.ByteBuffer getBuffer() {"); javaWriter.println(" return accessor.getBuffer();"); javaWriter.println(" }"); final Set methodBindingSet = new HashSet(); for (int i = 0; i < structCType.getNumFields(); i++) { final Field field = structCType.getField(i); final Type fieldType = field.getType(); final String cfgFieldName0 = JavaConfiguration.canonicalStructFieldSymbol(structCTypeName, field.getName()); if (!cfg.shouldIgnoreInInterface(cfgFieldName0)) { final String renamed = cfg.getJavaSymbolRename(cfgFieldName0); final String fieldName = renamed==null ? field.getName() : renamed; final String cfgFieldName1 = JavaConfiguration.canonicalStructFieldSymbol(structCTypeName, fieldName); final TypeInfo opaqueFieldType = cfg.typeInfo(fieldType); final boolean isOpaqueFieldType = null != opaqueFieldType; final TypeInfo opaqueField = cfg.canonicalNameOpaque(cfgFieldName1); final boolean isOpaqueField = null != opaqueField; if( GlueGen.debug() ) { System.err.printf("SE.ac.%02d: %s / %s (opaque %b), %s (opaque %b)%n", (i+1), (i+1), field, cfgFieldName1, isOpaqueField, fieldType.getDebugString(), isOpaqueFieldType); } if ( fieldType.isFunctionPointer() && !isOpaqueField ) { final FunctionSymbol func = new FunctionSymbol(field.getName(), fieldType.asPointer().getTargetType().asFunction()); func.rename(renamed); // null is OK generateFunctionPointerCode(methodBindingSet, javaWriter, jniWriter, structCTypeName, structClassPkgName, containingCType, containingJType, i, func, cfgFieldName1); } else if ( fieldType.isCompound() && !isOpaqueField ) { // FIXME: will need to support this at least in order to // handle the union in jawt_Win32DrawingSurfaceInfo (fabricate a name?) if (fieldType.getName() == null) { throw new GlueGenException("Anonymous structs as fields not supported yet (field \"" + field + "\" in type \"" + structCTypeName + "\")", fieldType.getASTLocusTag()); } javaWriter.println(); generateGetterSignature(javaWriter, fieldType, false, false, fieldType.getName(), fieldName, capitalizeString(fieldName), null, null); javaWriter.println(" {"); javaWriter.println(" return " + fieldType.getName() + ".create( accessor.slice( " + fieldName+"_offset[mdIdx], "+fieldName+"_size[mdIdx] ) );"); javaWriter.println(" }"); } else if ( ( fieldType.isArray() || fieldType.isPointer() ) && !isOpaqueField ) { generateArrayGetterSetterCode(methodBindingSet, javaWriter, jniWriter, structCType, structCTypeName, structClassPkgName, containingCType, containingJType, i, field, fieldName, cfgFieldName1); } else { final JavaType javaType; try { javaType = typeToJavaType(fieldType, machDescJava); } catch (final Exception e) { throw new GlueGenException("Error occurred while creating accessor for field \"" + field.getName() + "\", "+fieldType.getDebugString(), fieldType.getASTLocusTag(), e); } if ( isOpaqueFieldType || isOpaqueField || javaType.isPrimitive()) { // Primitive type final boolean fieldTypeNativeSizeFixed = fieldType.getSize().hasFixedNativeSize(); final String javaTypeName; if ( isOpaqueFieldType ) { javaTypeName = opaqueFieldType.javaType().getName(); } else if ( isOpaqueField ) { javaTypeName = opaqueField.javaType().getName(); // javaTypeName = compatiblePrimitiveJavaTypeName(fieldType, javaType, machDescJava); } else { javaTypeName = javaType.getName(); } final String capJavaTypeName = capitalizeString(javaTypeName); final String capFieldName = capitalizeString(fieldName); final String sizeDenominator = fieldType.isPointer() ? "pointer" : javaTypeName ; LOG.log(FINE, structCType.getASTLocusTag(), "Java.StructEmitter.Primitive: "+field.getName()+", "+fieldType+", "+javaTypeName+", "+ ", fixedSize "+fieldTypeNativeSizeFixed+", opaque[t "+isOpaqueFieldType+", f "+isOpaqueField+"], sizeDenominator "+sizeDenominator); if( !fieldType.isConst() ) { // Setter javaWriter.println(); generateSetterSignature(javaWriter, fieldType, false, containingJTypeName, fieldName, capFieldName, null, javaTypeName, null, null); javaWriter.println(" {"); if( fieldTypeNativeSizeFixed ) { javaWriter.println(" accessor.set" + capJavaTypeName + "At(" + fieldName+"_offset[mdIdx], val);"); } else { javaWriter.println(" accessor.set" + capJavaTypeName + "At(" + fieldName+"_offset[mdIdx], val, md."+sizeDenominator+"SizeInBytes());"); } javaWriter.println(" return this;"); javaWriter.println(" }"); } // Getter javaWriter.println(); generateGetterSignature(javaWriter, fieldType, false, false, javaTypeName, fieldName, capFieldName, null, null); javaWriter.println(" {"); javaWriter.print (" return "); if( fieldTypeNativeSizeFixed ) { javaWriter.println("accessor.get" + capJavaTypeName + "At(" + fieldName+"_offset[mdIdx]);"); } else { javaWriter.println("accessor.get" + capJavaTypeName + "At(" + fieldName+"_offset[mdIdx], md."+sizeDenominator+"SizeInBytes());"); } javaWriter.println(" }"); } else { javaWriter.println(); javaWriter.println(" /** UNKNOWN: "+cfgFieldName1 +": "+fieldType.getDebugString()+", "+javaType.getDebugString()+" */"); } } } } emitCustomJavaCode(javaWriter, containingJTypeName); if (needsNativeCode) { javaWriter.println(); emitJavaInitCode(javaWriter, containingJTypeName); javaWriter.println(); } javaWriter.println("}"); javaWriter.flush(); javaWriter.close(); if (needsNativeCode) { emitCInitCode(jniWriter, structClassPkgName, containingJTypeName); jniWriter.flush(); jniWriter.close(); } if( GlueGen.debug() ) { System.err.printf("SE.XX: structCType %s%n", structCType.getDebugString()); System.err.printf("SE.XX: contCTypeName %s%n", containingCType.getDebugString()); System.err.printf("SE.XX: contJTypeName %s%n", containingJType.getDebugString()); } } @Override public void endStructs() throws Exception {} public static int addStrings2Buffer(StringBuilder buf, final String sep, final String first, final Collection col) { int num = 0; if(null==buf) { buf = new StringBuilder(); } final Iterator iter = col.iterator(); if(null!=first) { buf.append(first); if( iter.hasNext() ) { buf.append(sep); } num++; } while( iter.hasNext() ) { buf.append(iter.next()); if( iter.hasNext() ) { buf.append(sep); } num++; } return num; } //---------------------------------------------------------------------- // Internals only below this point // private void generateGetterSignature(final PrintWriter writer, final Type origFieldType, final boolean staticMethod, final boolean abstractMethod, final String returnTypeName, final String fieldName, final String capitalizedFieldName, final String customArgs, final String arrayLengthExpr) { writer.print(" /** Getter for native field "+fieldName+": "+origFieldType.getDebugString()); if( null != arrayLengthExpr ) { writer.print(", with array length of "+arrayLengthExpr+""); } writer.println(" */"); writer.print(" public " + (staticMethod ? "static " : "") + (abstractMethod ? "abstract " : "") + returnTypeName + " get" + capitalizedFieldName + "("); if( null != customArgs ) { writer.print(customArgs); } writer.print(")"); } private void generateSetterSignature(final PrintWriter writer, final Type origFieldType, final boolean abstractMethod, final String returnTypeName, final String fieldName, final String capitalizedFieldName, final String customArgsPre, final String paramTypeName, final String customArgsPost, final String arrayLengthExpr) { writer.print(" /** Setter for native field "+fieldName+": "+origFieldType.getDebugString()); if( null != arrayLengthExpr ) { writer.print(", with array length of "+arrayLengthExpr+""); } writer.println(" */"); writer.print(" public " + (abstractMethod ? "abstract " : "") + returnTypeName + " set" + capitalizedFieldName + "("); if( null != customArgsPre ) { writer.print(customArgsPre+", "); } writer.print(paramTypeName + " val"); if( null != customArgsPost ) { writer.print(", "+customArgsPost); } writer.print(")"); } private void generateOffsetAndSizeArrays(final PrintWriter writer, final String prefix, final String fieldName, final Type fieldType, final Field field, final String postfix) { if(null != field) { writer.print(prefix+"private static final int[] "+fieldName+"_offset = new int[] { "); for( int i=0; i < machDescTargetConfigs.length; i++ ) { if(0 methodBindingSet, final PrintWriter javaWriter, final PrintWriter jniWriter, final String structCTypeName, final String structClassPkgName, final Type containingCType, final JavaType containingJType, final int i, final FunctionSymbol funcSym, final String returnSizeLookupName) { // Emit method call and associated native code final MethodBinding mb = bindFunction(funcSym, machDescJava, containingJType, containingCType); mb.findThisPointer(); // FIXME: need to provide option to disable this on per-function basis // JavaTypes representing C pointers in the initial // MethodBinding have not been lowered yet to concrete types final List bindings = expandMethodBinding(mb); final boolean useNIOOnly = true; final boolean useNIODirectOnly = true; for (final MethodBinding binding : bindings) { if(!methodBindingSet.add(binding)) { // skip .. already exisiting binding .. continue; } javaWriter.println(); // Emit public Java entry point for calling this function pointer JavaMethodBindingEmitter emitter = new JavaMethodBindingEmitter(binding, javaWriter, cfg.runtimeExceptionType(), cfg.unsupportedExceptionType(), true, // emitBody cfg.tagNativeBinding(), false, // eraseBufferAndArrayTypes useNIOOnly, useNIODirectOnly, false, // forDirectBufferImplementation false, // forIndirectBufferAndArrayImplementation false, // isUnimplemented false, // isInterface false, // isNativeMethod false, // isPrivateNativeMethod cfg); emitter.addModifier(JavaMethodBindingEmitter.PUBLIC); emitter.emit(); // Emit private native Java entry point for calling this function pointer emitter = new JavaMethodBindingEmitter(binding, javaWriter, cfg.runtimeExceptionType(), cfg.unsupportedExceptionType(), false, // emitBody cfg.tagNativeBinding(), true, // eraseBufferAndArrayTypes useNIOOnly, useNIODirectOnly, true, // forDirectBufferImplementation false, // forIndirectBufferAndArrayImplementation false, // isUnimplemented false, // isInterface false, // isNativeMethod true, cfg); emitter.addModifier(JavaMethodBindingEmitter.PRIVATE); emitter.addModifier(JavaMethodBindingEmitter.NATIVE); emitter.emit(); // Emit (private) C entry point for calling this function pointer final CMethodBindingEmitter cEmitter = new CMethodBindingEmitter(binding, jniWriter, structClassPkgName, containingJType.getName(), true, // FIXME: this is optional at this point false, true, false, // forIndirectBufferAndArrayImplementation machDescJava, getConfiguration()); cEmitter.setIsCStructFunctionPointer(true); prepCEmitter(returnSizeLookupName, binding.getJavaReturnType(), cEmitter); cEmitter.emit(); } } private void generateArrayPointerCode(final Set methodBindingSet, final PrintWriter javaWriter, final PrintWriter jniWriter, final String structCTypeName, final String structClassPkgName, final Type containingCType, final JavaType containingJType, final int i, final FunctionSymbol funcSym, final String returnSizeLookupName, final String docArrayLenExpr, final String nativeArrayLenExpr) { // Emit method call and associated native code final MethodBinding mb = bindFunction(funcSym, machDescJava, containingJType, containingCType); mb.findThisPointer(); // FIXME: need to provide option to disable this on per-function basis // JavaTypes representing C pointers in the initial // MethodBinding have not been lowered yet to concrete types final List bindings = expandMethodBinding(mb); final boolean useNIOOnly = true; final boolean useNIODirectOnly = true; for (final MethodBinding binding : bindings) { if(!methodBindingSet.add(binding)) { // skip .. already exisiting binding .. continue; } JavaMethodBindingEmitter emitter; // Emit private native Java entry point for calling this function pointer emitter = new JavaMethodBindingEmitter(binding, javaWriter, cfg.runtimeExceptionType(), cfg.unsupportedExceptionType(), false, // emitBody cfg.tagNativeBinding(), // tagNativeBinding true, // eraseBufferAndArrayTypes useNIOOnly, useNIODirectOnly, false, // forDirectBufferImplementation false, // forIndirectBufferAndArrayImplementation false, // isUnimplemented true, // isInterface true, // isNativeMethod true, // isPrivateNativeMethod cfg); if( null != docArrayLenExpr ) { emitter.setReturnedArrayLengthExpression(docArrayLenExpr, true); } emitter.addModifier(JavaMethodBindingEmitter.PRIVATE); emitter.addModifier(JavaMethodBindingEmitter.NATIVE); emitter.emit(); // Emit (private) C entry point for calling this function pointer final CMethodBindingEmitter cEmitter = new CMethodBindingEmitter(binding, jniWriter, structClassPkgName, containingJType.getName(), true, // FIXME: this is optional at this point false, true, false, // forIndirectBufferAndArrayImplementation machDescJava, getConfiguration()); cEmitter.setIsCStructFunctionPointer(false); final String lenExprSet; if( null != nativeArrayLenExpr ) { final JavaType javaReturnType = binding.getJavaReturnType(); if (javaReturnType.isNIOBuffer() || javaReturnType.isCompoundTypeWrapper()) { final Type retType = funcSym.getReturnType(); final Type baseType = retType.getBaseElementType(); lenExprSet = nativeArrayLenExpr+" * sizeof("+baseType.getName()+")"; cEmitter.setReturnValueCapacityExpression( new MessageFormat(lenExprSet) ); } else if (javaReturnType.isArray() || javaReturnType.isArrayOfCompoundTypeWrappers()) { lenExprSet = nativeArrayLenExpr; cEmitter.setReturnValueLengthExpression( new MessageFormat(lenExprSet) ); } else { lenExprSet = null; } } else { lenExprSet = null; } prepCEmitter(returnSizeLookupName, binding.getJavaReturnType(), cEmitter); cEmitter.emit(); } } private String getArrayArrayLengthExpr(final ArrayType type, final String returnSizeLookupName, final boolean hasFixedTypeLen[], final int[][] lengthRes) { final int[] length = new int[type.arrayDimension()]; lengthRes[0] = length; final StringBuilder lengthExpr = new StringBuilder(); hasFixedTypeLen[0] = true; ArrayType typeIter = type; for(int i=0; i methodBindingSet, final PrintWriter javaWriter, final PrintWriter jniWriter, final CompoundType structCType, final String structCTypeName, final String structClassPkgName, final Type containingCType, final JavaType containingJType, final int i, final Field field, final String fieldName, final String returnSizeLookupName) throws Exception { final Type fieldType = field.getType(); final JavaType javaType; try { javaType = typeToJavaType(fieldType, machDescJava); } catch (final Exception e) { throw new GlueGenException("Error occurred while creating array/pointer accessor for field \"" + returnSizeLookupName + "\", "+fieldType.getDebugString(), fieldType.getASTLocusTag(), e); } if( GlueGen.debug() ) { System.err.printf("SE.ac.%02d: javaType %s%n", (i+1), javaType.getDebugString()); } // // Collect all required information including considering Opaque types // final String containingJTypeName = containingJType.getName(); final boolean isOpaque = isOpaque(fieldType); final boolean isString = cfg.returnsString(returnSizeLookupName); // FIXME: Allow custom Charset ? US-ASCII, UTF-8 or UTF-16 ? final boolean useGetCStringLength; final String arrayLengthExpr; final boolean arrayLengthExprIsConst; final int[] arrayLengths; final boolean useFixedTypeLen[] = { false }; final boolean isPointer; final boolean isPrimitive; final boolean isConst; final JavaType baseJElemType; final String baseJElemTypeName; final boolean hasSingleElement; final String capitalFieldName; final String baseJElemTypeNameC; final String baseJElemTypeNameU; final boolean isByteBuffer; final boolean baseCElemNativeSizeFixed; final String baseCElemSizeDenominator; { final Type baseCElemType; final ArrayType arrayType = fieldType.asArray(); String _arrayLengthExpr = null; boolean _arrayLengthExprIsConst = false; if( isOpaque || javaType.isPrimitive() ) { // Overridden by JavaConfiguration.typeInfo(..), i.e. Opaque! // Emulating array w/ 1 element isPrimitive = true; _arrayLengthExpr = nativeArrayLengthONE; _arrayLengthExprIsConst = true; arrayLengths = new int[] { 1 }; baseCElemType = null; isPointer = false; isConst = fieldType.isConst(); baseJElemType = null; baseJElemTypeName = compatiblePrimitiveJavaTypeName(fieldType, javaType, machDescJava); baseCElemNativeSizeFixed = false; baseCElemSizeDenominator = fieldType.isPointer() ? "pointer" : baseJElemTypeName ; } else { if( null != arrayType ) { final int[][] lengthRes = new int[1][]; _arrayLengthExpr = getArrayArrayLengthExpr(arrayType, returnSizeLookupName, useFixedTypeLen, lengthRes); _arrayLengthExprIsConst = true; arrayLengths = lengthRes[0]; baseCElemType = arrayType.getBaseElementType(); isPointer = false; } else { final PointerType pointerType = fieldType.asPointer(); _arrayLengthExpr = getPointerArrayLengthExpr(pointerType, returnSizeLookupName); _arrayLengthExprIsConst = false; arrayLengths = null; baseCElemType = pointerType.getBaseElementType(); isPointer = true; if( 1 != pointerType.pointerDepth() ) { javaWriter.println(); final String msg = "SKIP ptr-ptr (depth "+pointerType.pointerDepth()+"): "+returnSizeLookupName +": "+fieldType; javaWriter.println(" // "+msg); LOG.log(WARNING, structCType.getASTLocusTag(), msg); return; } } if( GlueGen.debug() ) { System.err.printf("SE.ac.%02d: baseCType %s%n", (i+1), baseCElemType.getDebugString()); } isPrimitive = baseCElemType.isPrimitive(); isConst = baseCElemType.isConst(); try { baseJElemType = typeToJavaType(baseCElemType, machDescJava); } catch (final Exception e ) { throw new GlueGenException("Error occurred while creating array/pointer accessor for field \"" + returnSizeLookupName + "\", baseType "+baseCElemType.getDebugString()+", topType "+fieldType.getDebugString(), fieldType.getASTLocusTag(), e); } baseJElemTypeName = baseJElemType.getName(); baseCElemNativeSizeFixed = baseCElemType.isPrimitive() ? baseCElemType.getSize().hasFixedNativeSize() : true; baseCElemSizeDenominator = baseCElemType.isPointer() ? "pointer" : baseJElemTypeName ; if( !baseCElemNativeSizeFixed ) { javaWriter.println(); final String msg = "SKIP primitive w/ platform dependent sized type in struct: "+returnSizeLookupName+": "+fieldType.getDebugString(); javaWriter.println(" // "+msg); LOG.log(WARNING, structCType.getASTLocusTag(), msg); return; } } if( GlueGen.debug() ) { System.err.printf("SE.ac.%02d: baseJElemType %s%n", (i+1), (null != baseJElemType ? baseJElemType.getDebugString() : null)); } capitalFieldName = capitalizeString(fieldName); baseJElemTypeNameC = capitalizeString(baseJElemTypeName); baseJElemTypeNameU = baseJElemTypeName.toUpperCase(); isByteBuffer = "Byte".equals(baseJElemTypeNameC); if( null == _arrayLengthExpr && isString && isPointer ) { useGetCStringLength = true; _arrayLengthExpr = "getCStringLengthImpl(pString)+1"; _arrayLengthExprIsConst = false; this.requiresStaticInitialization = true; LOG.log(INFO, structCType.getASTLocusTag(), "StaticInit Trigger.3 \"{0}\"", returnSizeLookupName); } else { useGetCStringLength = false; } arrayLengthExpr = _arrayLengthExpr; arrayLengthExprIsConst = _arrayLengthExprIsConst; if( null == arrayLengthExpr ) { javaWriter.println(); final String msg = "SKIP unsized array in struct: "+returnSizeLookupName+": "+fieldType.getDebugString(); javaWriter.println(" // "+msg); LOG.log(WARNING, structCType.getASTLocusTag(), msg); return; } boolean _hasSingleElement=false; try { _hasSingleElement = 1 ==Integer.parseInt(_arrayLengthExpr); } catch (final Exception e ) {} hasSingleElement = _hasSingleElement; } if( GlueGen.debug() ) { System.err.printf("SE.ac.%02d: baseJElemTypeName %s, array-lengths %s%n", (i+1), baseJElemTypeName, Arrays.toString(arrayLengths)); System.err.printf("SE.ac.%02d: arrayLengthExpr: %s (const %b), hasSingleElement %b, isByteBuffer %b, isString %b, isPointer %b, isPrimitive %b, isOpaque %b, baseCElemNativeSizeFixed %b, baseCElemSizeDenominator %s, isConst %b, useGetCStringLength %b%n", (i+1), arrayLengthExpr, arrayLengthExprIsConst, hasSingleElement, isByteBuffer, isString, isPointer, isPrimitive, isOpaque, baseCElemNativeSizeFixed, baseCElemSizeDenominator, isConst, useGetCStringLength); } // // Emit .. // if( !hasSingleElement && useFixedTypeLen[0] ) { javaWriter.println(); generateGetterSignature(javaWriter, fieldType, arrayLengthExprIsConst, false, "final int", fieldName, capitalFieldName+"ArrayLength", null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" return "+arrayLengthExpr+";"); javaWriter.println(" }"); } if( !isConst ) { // Setter javaWriter.println(); if( isPrimitive ) { // Setter Primitive if( isPointer ) { // Setter Primitive Pointer final String msg = "SKIP setter for primitive-pointer type in struct: "+returnSizeLookupName+": "+fieldType.getDebugString(); javaWriter.println(" // "+msg); LOG.log(INFO, structCType.getASTLocusTag(), msg); } else { // Setter Primitive Array if( hasSingleElement ) { generateSetterSignature(javaWriter, fieldType, false, containingJTypeName, fieldName, capitalFieldName, null, baseJElemTypeName, null, arrayLengthExpr); javaWriter.println(" {"); if( baseCElemNativeSizeFixed ) { javaWriter.println(" accessor.set" + baseJElemTypeNameC + "At(" + fieldName+"_offset[mdIdx], val);"); } else { javaWriter.println(" accessor.set" + baseJElemTypeNameC + "At(" + fieldName+"_offset[mdIdx], val, md."+baseCElemSizeDenominator+"SizeInBytes());"); } javaWriter.println(" return this;"); javaWriter.println(" }"); } else { generateSetterSignature(javaWriter, fieldType, false, containingJTypeName, fieldName, capitalFieldName, "final int offset", baseJElemTypeName+"[]", null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); javaWriter.println(" if( offset + val.length > arrayLength ) { throw new IndexOutOfBoundsException(\"offset \"+offset+\" + val.length \"+val.length+\" > array-length \"+arrayLength); };"); javaWriter.println(" final int elemSize = Buffers.SIZEOF_"+baseJElemTypeNameU+";"); javaWriter.println(" final ByteBuffer destB = getBuffer();"); javaWriter.println(" final int bTotal = arrayLength * elemSize;"); javaWriter.println(" if( bTotal > "+fieldName+"_size[mdIdx] ) { throw new IndexOutOfBoundsException(\"bTotal \"+bTotal+\" > size \"+"+fieldName+"_size[mdIdx]+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" int bOffset = "+fieldName+"_offset[mdIdx];"); javaWriter.println(" final int bLimes = bOffset + bTotal;"); javaWriter.println(" if( bLimes > destB.limit() ) { throw new IndexOutOfBoundsException(\"bLimes \"+bLimes+\" > buffer.limit \"+destB.limit()+\", elemOff \"+bOffset+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" bOffset += elemSize * offset;"); javaWriter.println(" accessor.set" + baseJElemTypeNameC + "sAt(bOffset, val);"); javaWriter.println(" return this;"); javaWriter.println(" }"); } } } else { // Setter Struct if( isPointer ) { // Setter Struct Pointer final String msg = "SKIP setter for complex-pointer type in struct: "+returnSizeLookupName+": "+fieldType.getDebugString(); javaWriter.println(" // "+msg); LOG.log(INFO, structCType.getASTLocusTag(), msg); } else { // Setter Struct Array if( hasSingleElement ) { generateSetterSignature(javaWriter, fieldType, false, containingJTypeName, fieldName, capitalFieldName, null, baseJElemTypeName, null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final int elemSize = "+baseJElemTypeName+".size();"); javaWriter.println(" final ByteBuffer destB = getBuffer();"); javaWriter.println(" if( elemSize > "+fieldName+"_size[mdIdx] ) { throw new IndexOutOfBoundsException(\"elemSize \"+elemSize+\" > size \"+"+fieldName+"_size[mdIdx]); };"); javaWriter.println(" int bOffset = "+fieldName+"_offset[mdIdx];"); javaWriter.println(" final int bLimes = bOffset + elemSize;"); javaWriter.println(" if( bLimes > destB.limit() ) { throw new IndexOutOfBoundsException(\"bLimes \"+bLimes+\" > buffer.limit \"+destB.limit()+\", elemOff \"+bOffset+\", elemSize \"+elemSize); };"); javaWriter.println(" final ByteBuffer sourceB = val.getBuffer();"); javaWriter.println(" for(int f=0; f= bLimes ) { throw new IndexOutOfBoundsException(\"elem-byte[0][\"+f+\"]: bOffset \"+bOffset+\" >= bLimes \"+bLimes+\", elemSize \"+elemSize); };"); javaWriter.println(" destB.put(bOffset++, sourceB.get(f));"); javaWriter.println(" }"); javaWriter.println(" return this;"); javaWriter.println(" }"); } else { generateSetterSignature(javaWriter, fieldType, false, containingJTypeName, fieldName, capitalFieldName, "final int offset", baseJElemTypeName+"[]", null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); javaWriter.println(" if( offset + val.length > arrayLength ) { throw new IndexOutOfBoundsException(\"offset \"+offset+\" + val.length \"+val.length+\" > array-length \"+arrayLength); };"); javaWriter.println(" final int elemSize = "+baseJElemTypeName+".size();"); javaWriter.println(" final ByteBuffer destB = getBuffer();"); javaWriter.println(" final int bTotal = arrayLength * elemSize;"); javaWriter.println(" if( bTotal > "+fieldName+"_size[mdIdx] ) { throw new IndexOutOfBoundsException(\"bTotal \"+bTotal+\" > size \"+"+fieldName+"_size[mdIdx]+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" int bOffset = "+fieldName+"_offset[mdIdx];"); javaWriter.println(" final int bLimes = bOffset + bTotal;"); javaWriter.println(" if( bLimes > destB.limit() ) { throw new IndexOutOfBoundsException(\"bLimes \"+bLimes+\" > buffer.limit \"+destB.limit()+\", elemOff \"+bOffset+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" bOffset += elemSize * offset;"); javaWriter.println(" for(int index=0; index= bLimes ) { throw new IndexOutOfBoundsException(\"elem-byte[\"+(offset+index)+\"][\"+f+\"]: bOffset \"+bOffset+\" >= bLimes \"+bLimes+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" destB.put(bOffset++, sourceB.get(f));"); javaWriter.println(" }"); javaWriter.println(" }"); javaWriter.println(" return this;"); javaWriter.println(" }"); javaWriter.println(); generateSetterSignature(javaWriter, fieldType, false, containingJTypeName, fieldName, capitalFieldName, "final int index", baseJElemTypeName, null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); javaWriter.println(" final int elemSize = "+baseJElemTypeName+".size();"); javaWriter.println(" final ByteBuffer destB = getBuffer();"); javaWriter.println(" final int bTotal = arrayLength * elemSize;"); javaWriter.println(" if( bTotal > "+fieldName+"_size[mdIdx] ) { throw new IndexOutOfBoundsException(\"bTotal \"+bTotal+\" > size \"+"+fieldName+"_size[mdIdx]+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" int bOffset = "+fieldName+"_offset[mdIdx];"); javaWriter.println(" final int bLimes = bOffset + bTotal;"); javaWriter.println(" if( bLimes > destB.limit() ) { throw new IndexOutOfBoundsException(\"bLimes \"+bLimes+\" > buffer.limit \"+destB.limit()+\", elemOff \"+bOffset+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" bOffset += elemSize * index;"); javaWriter.println(" final ByteBuffer sourceB = val.getBuffer();"); javaWriter.println(" for(int f=0; f= bLimes ) { throw new IndexOutOfBoundsException(\"elem-byte[\"+index+\"][\"+f+\"]: bOffset \"+bOffset+\" >= bLimes \"+bLimes+\", elemSize \"+elemSize+\" * \"+arrayLength); };"); javaWriter.println(" destB.put(bOffset++, sourceB.get(f));"); javaWriter.println(" }"); javaWriter.println(" return this;"); javaWriter.println(" }"); } } } } // Getter javaWriter.println(); if( isPrimitive ) { // Getter Primitive if( isPointer ) { // Getter Primitive Pointer final FunctionType ft = new FunctionType(dummyFuncTypeName, SizeThunk.POINTER, fieldType, 0); ft.addArgument(containingCType.newCVVariant(containingCType.getCVAttributes() | CVAttributes.CONST), CMethodBindingEmitter.cThisArgumentName()); ft.addArgument(int32Type, nativeArrayLengthArg); final FunctionSymbol fs = new FunctionSymbol("get"+capitalFieldName, ft); jniWriter.println(); jniWriter.print("static "+fs.toString(false)); jniWriter.println("{"); jniWriter.println(" return "+CMethodBindingEmitter.cThisArgumentName()+"->"+field.getName()+";"); jniWriter.println("}"); jniWriter.println(); generateArrayPointerCode(methodBindingSet, javaWriter, jniWriter, structCTypeName, structClassPkgName, containingCType, containingJType, i, fs, returnSizeLookupName, arrayLengthExpr, nativeArrayLengthArg); javaWriter.println(); generateGetterSignature(javaWriter, fieldType, false, false, baseJElemTypeNameC+"Buffer", fieldName, capitalFieldName, null, arrayLengthExpr); javaWriter.println(" {"); if( useGetCStringLength ) { javaWriter.println(" final int arrayLength = get"+capitalFieldName+"ArrayLength();"); } else { javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); } javaWriter.println(" final ByteBuffer _res = get"+capitalFieldName+"0(getBuffer(), arrayLength);"); javaWriter.println(" if (_res == null) return null;"); javaWriter.print(" return Buffers.nativeOrder(_res)"); if( !isByteBuffer ) { javaWriter.print(".as"+baseJElemTypeNameC+"Buffer()"); } javaWriter.println(";"); javaWriter.println(" }"); if( isString && isByteBuffer ) { javaWriter.println(); generateGetterSignature(javaWriter, fieldType, false, false, "String", fieldName, capitalFieldName+"AsString", null, arrayLengthExpr); javaWriter.println(" {"); if( useGetCStringLength ) { javaWriter.println(" final int arrayLength = get"+capitalFieldName+"ArrayLength();"); } else { javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); } javaWriter.println(" final ByteBuffer bb = get"+capitalFieldName+"0(getBuffer(), arrayLength);"); javaWriter.println(" if (bb == null) return null;"); javaWriter.println(" final byte[] ba = new byte[arrayLength];"); javaWriter.println(" int i = -1;"); javaWriter.println(" while( ++i < arrayLength ) {"); javaWriter.println(" ba[i] = bb.get(i);"); javaWriter.println(" if( (byte)0 == ba[i] ) break;"); javaWriter.println(" }"); javaWriter.println(" return new String(ba, 0, i);"); javaWriter.println(" }"); } if( useGetCStringLength ) { javaWriter.println(); generateGetterSignature(javaWriter, fieldType, false, false, "final int", fieldName, capitalFieldName+"ArrayLength", null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final long pString = PointerBuffer.wrap( accessor.slice(" + fieldName+"_offset[mdIdx], PointerBuffer.ELEMENT_SIZE) ).get(0);"); javaWriter.println(" return "+arrayLengthExpr+";"); javaWriter.println(" }"); } } else { // Getter Primitive Array if( hasSingleElement ) { generateGetterSignature(javaWriter, fieldType, false, false, baseJElemTypeName, fieldName, capitalFieldName, null, arrayLengthExpr); javaWriter.println(" {"); if( baseCElemNativeSizeFixed ) { javaWriter.println(" return accessor.get" + baseJElemTypeNameC + "At(" + fieldName+"_offset[mdIdx]);"); } else { javaWriter.println(" return accessor.get" + baseJElemTypeNameC + "At(" + fieldName+"_offset[mdIdx], md."+baseCElemSizeDenominator+"SizeInBytes());"); } javaWriter.println(" }"); javaWriter.println(); } else { generateGetterSignature(javaWriter, fieldType, false, false, baseJElemTypeNameC+"Buffer", fieldName, capitalFieldName, null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.print(" return accessor.slice(" + fieldName+"_offset[mdIdx], Buffers.SIZEOF_"+baseJElemTypeNameU+" * "+arrayLengthExpr+")"); if( !isByteBuffer ) { javaWriter.print(".as"+baseJElemTypeNameC+"Buffer()"); } javaWriter.println(";"); javaWriter.println(" }"); javaWriter.println(); if( isString && isByteBuffer ) { generateGetterSignature(javaWriter, fieldType, false, false, "String", fieldName, capitalFieldName+"AsString", null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final int offset = " + fieldName+"_offset[mdIdx];"); javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); javaWriter.println(" final ByteBuffer bb = getBuffer();"); javaWriter.println(" final byte[] ba = new byte[arrayLength];"); javaWriter.println(" int i = -1;"); javaWriter.println(" while( ++i < arrayLength ) {"); javaWriter.println(" ba[i] = bb.get(offset+i);"); javaWriter.println(" if( (byte)0 == ba[i] ) break;"); javaWriter.println(" }"); javaWriter.println(" return new String(ba, 0, i);"); javaWriter.println(" }"); } else { generateGetterSignature(javaWriter, fieldType, false, false, baseJElemTypeName+"[]", fieldName, capitalFieldName, "final int offset, "+baseJElemTypeName+" result[]", arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); javaWriter.println(" if( offset + result.length > arrayLength ) { throw new IndexOutOfBoundsException(\"offset \"+offset+\" + result.length \"+result.length+\" > array-length \"+arrayLength); };"); javaWriter.println(" return accessor.get" + baseJElemTypeNameC + "sAt(" + fieldName+"_offset[mdIdx] + (Buffers.SIZEOF_"+baseJElemTypeNameU+" * offset), result);"); javaWriter.println(" }"); javaWriter.println(); } } } } else { // Getter Struct if( isPointer ) { // Getter Struct Pointer final FunctionType ft = new FunctionType(dummyFuncTypeName, SizeThunk.POINTER, fieldType, 0); ft.addArgument(containingCType.newCVVariant(containingCType.getCVAttributes() | CVAttributes.CONST), CMethodBindingEmitter.cThisArgumentName()); ft.addArgument(int32Type, nativeArrayElemOffsetArg); final FunctionSymbol fs = new FunctionSymbol("get"+capitalFieldName, ft); jniWriter.println(); jniWriter.print("static "+fs.toString(false)); jniWriter.println("{"); jniWriter.println(" return "+CMethodBindingEmitter.cThisArgumentName()+"->"+field.getName()+"+"+nativeArrayElemOffsetArg+";"); jniWriter.println("}"); jniWriter.println(); generateArrayPointerCode(methodBindingSet, javaWriter, jniWriter, structCTypeName, structClassPkgName, containingCType, containingJType, i, fs, returnSizeLookupName, arrayLengthExpr, nativeArrayLengthONE); javaWriter.println(); if( hasSingleElement ) { generateGetterSignature(javaWriter, fieldType, false, false, baseJElemTypeName, fieldName, capitalFieldName, null, arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final ByteBuffer source = getBuffer();"); javaWriter.println(" final ByteBuffer _res = get"+capitalFieldName+"0(source, 0);"); javaWriter.println(" if (_res == null) return null;"); javaWriter.println(" return "+baseJElemTypeName+".create(_res);"); javaWriter.println(" }"); } else { generateGetterSignature(javaWriter, fieldType, false, false, baseJElemTypeName+"[]", fieldName, capitalFieldName, "final int offset, "+baseJElemTypeName+" result[]", arrayLengthExpr); javaWriter.println(" {"); javaWriter.println(" final int arrayLength = "+arrayLengthExpr+";"); javaWriter.println(" if( offset + result.length > arrayLength ) { throw new IndexOutOfBoundsException(\"offset \"+offset+\" + result.length \"+result.length+\" > array-length \"+arrayLength); };"); javaWriter.println(" final ByteBuffer source = getBuffer();"); javaWriter.println(" for(int index=0; index arrayLength ) { throw new IndexOutOfBoundsException(\"offset \"+offset+\" + result.length \"+result.length+\" > array-length \"+arrayLength); };"); javaWriter.println(" final int elemSize = "+baseJElemTypeName+".size();"); javaWriter.println(" int bOffset = "+fieldName+"_offset[mdIdx] + ( elemSize * offset );"); javaWriter.println(" for(int index=0; index {1}", cType, jt); return jt; } private boolean isJNIEnvPointer(final Type cType) { final PointerType opt = cType.asPointer(); return (opt != null) && (opt.getTargetType().getName() != null) && (opt.getTargetType().getName().equals("JNIEnv")); } private JavaType typeToJavaTypeImpl(final Type cType, final MachineDataInfo curMachDesc) { // Recognize JNIEnv* case up front if( isJNIEnvPointer(cType) ) { return JavaType.createForJNIEnv(); } // Opaque specifications override automatic conversions // in case the identity is being used .. not if ptr-ptr final TypeInfo info = cfg.typeInfo(cType); if (info != null) { boolean isPointerPointer = false; if (cType.pointerDepth() > 0 || cType.arrayDimension() > 0) { Type targetType; // target type if (cType.isPointer()) { // t is *, we need to get targetType = cType.asPointer().getTargetType(); } else { // t is [], we need to get targetType = cType.asArray().getBaseElementType(); } if (cType.pointerDepth() == 2 || cType.arrayDimension() == 2) { // Get the target type of the target type (targetType was computer earlier // as to be a pointer to the target type, so now we need to get its // target type) if (targetType.isPointer()) { isPointerPointer = true; if( GlueGen.debug() ) { // t is**, targetType is *, we need to get final Type bottomType = targetType.asPointer().getTargetType(); LOG.log(INFO, cType.getASTLocusTag(), "Opaque Type: {0}, targetType: {1}, bottomType: {2} is ptr-ptr", cType, targetType, bottomType); } } } } if( !isPointerPointer ) { return info.javaType(); } } if (cType.isInt() || cType.isEnum()) { switch ((int) cType.getSize(curMachDesc)) { case 1: return javaType(Byte.TYPE); case 2: return javaType(Short.TYPE); case 4: return javaType(Integer.TYPE); case 8: return javaType(Long.TYPE); default: throw new GlueGenException("Unknown integer type of size " + cType.getSize(curMachDesc) + " and name " + cType.getName(), cType.getASTLocusTag()); } } else if (cType.isFloat()) { return javaType(Float.TYPE); } else if (cType.isDouble()) { return javaType(Double.TYPE); } else if (cType.isVoid()) { return javaType(Void.TYPE); } else if (cType.pointerDepth() > 0 || cType.arrayDimension() > 0) { Type targetType; // target type if (cType.isPointer()) { // t is *, we need to get targetType = cType.asPointer().getTargetType(); } else { // t is [], we need to get targetType = cType.asArray().getBaseElementType(); } // Handle Types of form pointer-to-type or array-of-type, like // char* or int[]; these are expanded out into Java primitive // arrays, NIO buffers, or both in expandMethodBinding if (cType.pointerDepth() == 1 || cType.arrayDimension() == 1) { if (targetType.isVoid()) { return JavaType.createForCVoidPointer(); } else if (targetType.isInt()) { final SizeThunk targetSizeThunk = targetType.getSize(); if( null != targetSizeThunk && SizeThunk.POINTER == targetSizeThunk ) { // Map intptr_t*, uintptr_t*, ptrdiff_t* and size_t* to PointerBuffer, since referenced memory-size is arch dependent return JavaType.forNIOPointerBufferClass(); } switch ((int) targetType.getSize(curMachDesc)) { case 1: return JavaType.createForCCharPointer(); case 2: return JavaType.createForCShortPointer(); case 4: return JavaType.createForCInt32Pointer(); case 8: return JavaType.createForCInt64Pointer(); default: throw new GlueGenException("Unknown integer array type of size " + cType.getSize(curMachDesc) + " and name " + cType.getName()+", "+cType.getDebugString(), cType.getASTLocusTag()); } } else if (targetType.isFloat()) { return JavaType.createForCFloatPointer(); } else if (targetType.isDouble()) { return JavaType.createForCDoublePointer(); } else if (targetType.isCompound()) { if (cType.isArray()) { // FIXME: Compound and Compound-Arrays return JavaType.createForCArray(targetType); } // Special cases for known JNI types (in particular for converting jawt.h) if (cType.getName() != null && cType.getName().equals("jobject")) { return javaType(java.lang.Object.class); } // NOTE: Struct Name Resolution (JavaEmitter, HeaderParser) String name; if( !targetType.isTypedef() && cType.isTypedef() ) { // If compound is not a typedef _and_ containing pointer is typedef, use the latter. name = cType.getName(); } else { // .. otherwise try compound name name = targetType.getName(); if( null == name ) { // .. fall back to pointer type name name = cType.getName(); if (name == null) { throw new GlueGenException("Couldn't find a proper type name for pointer type " + cType.getDebugString(), cType.getASTLocusTag()); } } } return JavaType.createForCStruct(cfg.renameJavaType(name)); } else { throw new GlueGenException("Don't know how to convert pointer/array type \"" + cType.getDebugString() + "\"", cType.getASTLocusTag()); } } // Handle Types of form pointer-to-pointer-to-type or // array-of-arrays-of-type, like char** or int[][] else if (cType.pointerDepth() == 2 || cType.arrayDimension() == 2) { // Get the target type of the target type (targetType was computer earlier // as to be a pointer to the target type, so now we need to get its // target type) Type bottomType; if (targetType.isPointer()) { // t is**, targetType is *, we need to get bottomType = targetType.asPointer().getTargetType(); if( GlueGen.debug() ) { LOG.log(INFO, cType.getASTLocusTag(), "typeToJavaType(ptr-ptr): {0}, targetType: {1}, bottomType: {2}", cType.getDebugString(), targetType, bottomType); } return JavaType.forNIOPointerBufferClass(); } else if(targetType.isArray()) { // t is[][], targetType is [], we need to get bottomType = targetType.asArray().getBaseElementType(); if( GlueGen.debug() ) { LOG.log(INFO, cType.getASTLocusTag(), "typeToJavaType(ptr-ptr.array): {0}, targetType: {1}, bottomType: {2}", cType.getDebugString(), targetType, bottomType); } } else { bottomType = targetType; if( GlueGen.debug() ) { LOG.log(INFO, cType.getASTLocusTag(), "typeToJavaType(ptr-ptr.primitive): {0}, targetType: {1}, bottomType: {2}", cType.getDebugString(), targetType, bottomType); } } // Warning: The below code is not backed up by an implementation, // the only working variant is a ptr-ptr type which results in a PointerBuffer. // if (bottomType.isPrimitive()) { if (bottomType.isInt()) { switch ((int) bottomType.getSize(curMachDesc)) { case 1: return javaType(ArrayTypes.byteBufferArrayClass); case 2: return javaType(ArrayTypes.shortBufferArrayClass); case 4: return javaType(ArrayTypes.intBufferArrayClass); case 8: return javaType(ArrayTypes.longBufferArrayClass); default: throw new GlueGenException("Unknown two-dimensional integer array type of element size " + bottomType.getSize(curMachDesc) + " and name " + bottomType.getName()+", "+bottomType.getDebugString(), bottomType.getASTLocusTag()); } } else if (bottomType.isFloat()) { return javaType(ArrayTypes.floatBufferArrayClass); } else if (bottomType.isDouble()) { return javaType(ArrayTypes.doubleBufferArrayClass); } else { throw new GlueGenException("Unexpected primitive type " + bottomType.getDebugString() + " in two-dimensional array", bottomType.getASTLocusTag()); } } else if (bottomType.isVoid()) { return javaType(ArrayTypes.bufferArrayClass); } else if (targetType.isPointer() && (targetType.pointerDepth() == 1) && targetType.asPointer().getTargetType().isCompound()) { // Array of pointers; convert as array of StructAccessors return JavaType.createForCArray(bottomType); } else { throw new GlueGenException( "Could not convert C type \"" + cType.getDebugString() + "\" " + "to appropriate Java type; need to add more support for " + "depth=2 pointer/array types [debug info: targetType=\"" + targetType + "\"]", cType.getASTLocusTag()); } } else { // can't handle this type of pointer/array argument throw new GlueGenException( "Could not convert C pointer/array \"" + cType.getDebugString() + "\" to " + "appropriate Java type; types with pointer/array depth " + "greater than 2 are not yet supported [debug info: " + "pointerDepth=" + cType.pointerDepth() + " arrayDimension=" + cType.arrayDimension() + " targetType=\"" + targetType + "\"]", cType.getASTLocusTag()); } } else if( cType.isCompound() ) { // FIXME: Compound and Compound-Arrays String name = cType.getName(); if (name == null) { name = cType.asCompound().getStructName(); if (name == null) { throw new GlueGenException("Couldn't find a proper type name for pointer type " + cType.getDebugString(), cType.getASTLocusTag()); } } return JavaType.createForCStruct(cfg.renameJavaType(name)); } else { throw new GlueGenException( "Could not convert C type \"" + cType.getDebugString() + "\" (class " + cType.getClass().getName() + ") to appropriate Java type", cType.getASTLocusTag()); } } private static boolean isIntegerType(final Class c) { return ((c == Byte.TYPE) || (c == Short.TYPE) || (c == Character.TYPE) || (c == Integer.TYPE) || (c == Long.TYPE)); } private StructLayout getLayout() { if (layout == null) { layout = StructLayout.create(0); } return layout; } /** * @param filename the class's full filename to open w/ write access * @param simpleClassName the simple class name, i.e. w/o package name * @return a {@link PrintWriter} instance to write the class source file or null to suppress output! * @throws IOException */ protected PrintWriter openFile(final String filename, final String simpleClassName) throws IOException { //System.out.println("Trying to open: " + filename); final File file = new File(filename); final String parentDir = file.getParent(); if (parentDir != null) { new File(parentDir).mkdirs(); } return new PrintWriter(new BufferedWriter(new FileWriter(file))); } private boolean isOpaque(final Type type) { return null != cfg.typeInfo(type); } private String compatiblePrimitiveJavaTypeName(final Type fieldType, final JavaType javaType, final MachineDataInfo curMachDesc) { final Class c = javaType.getJavaClass(); if (!isIntegerType(c)) { // FIXME throw new GlueGenException("Can't yet handle opaque definitions of structs' fields to non-integer types (byte, short, int, long, etc.): type: "+fieldType+", javaType "+javaType+", javaClass "+c, fieldType.getASTLocusTag()); } switch ((int) fieldType.getSize(curMachDesc)) { case 1: return "byte"; case 2: return "short"; case 4: return "int"; case 8: return "long"; default: throw new GlueGenException("Can't handle opaque definitions if the starting type isn't compatible with integral types", fieldType.getASTLocusTag()); } } private void openWriters() throws IOException { String jRoot = null; if (cfg.allStatic() || cfg.emitInterface()) { jRoot = cfg.javaOutputDir() + File.separator + CodeGenUtils.packageAsPath(cfg.packageName()); } String jImplRoot = null; if (!cfg.allStatic()) { jImplRoot = cfg.javaOutputDir() + File.separator + CodeGenUtils.packageAsPath(cfg.implPackageName()); } String nRoot = cfg.nativeOutputDir(); if (cfg.nativeOutputUsesJavaHierarchy()) { nRoot += File.separator + CodeGenUtils.packageAsPath(cfg.packageName()); } if (cfg.allStatic() || cfg.emitInterface()) { javaFileName = jRoot + File.separator + cfg.className() + ".java"; javaWriter = openFile(javaFileName, cfg.className()); } if (!cfg.allStatic() && cfg.emitImpl()) { javaFileName = jImplRoot + File.separator + cfg.implClassName() + ".java"; javaImplWriter = openFile(javaFileName, cfg.implClassName()); } if (cfg.emitImpl()) { cFileName = nRoot + File.separator + cfg.implClassName() + "_JNI.c"; cWriter = openFile(cFileName, cfg.implClassName()); } if (javaWriter != null) { CodeGenUtils.emitAutogeneratedWarning(javaWriter, this); } if (javaImplWriter != null) { CodeGenUtils.emitAutogeneratedWarning(javaImplWriter, this); } if (cWriter != null) { CodeGenUtils.emitAutogeneratedWarning(cWriter, this); } } /** For {@link #javaWriter} or {@link #javaImplWriter} */ protected String javaFileName() { return javaFileName; } protected PrintWriter javaWriter() { if (!cfg.allStatic() && !cfg.emitInterface()) { throw new InternalError("Should not call this"); } return javaWriter; } protected PrintWriter javaImplWriter() { if (cfg.allStatic() || !cfg.emitImpl()) { throw new InternalError("Should not call this"); } return javaImplWriter; } /** For {@link #cImplWriter} */ protected String cFileName() { return cFileName; } protected PrintWriter cWriter() { if (!cfg.emitImpl()) { throw new InternalError("Should not call this"); } return cWriter; } private void closeWriter(final PrintWriter writer) throws IOException { writer.flush(); writer.close(); } private void closeWriters() throws IOException { if (javaWriter != null) { closeWriter(javaWriter); } if (javaImplWriter != null) { closeWriter(javaImplWriter); } if (cWriter != null) { closeWriter(cWriter); } javaWriter = null; javaImplWriter = null; cWriter = null; } /** * Returns the value that was specified by the configuration directive * "JavaOutputDir", or the default if none was specified. */ protected String getJavaOutputDir() { return cfg.javaOutputDir(); } /** * Returns the value that was specified by the configuration directive * "Package", or the default if none was specified. */ protected String getJavaPackageName() { return cfg.packageName(); } /** * Returns the value that was specified by the configuration directive * "ImplPackage", or the default if none was specified. */ protected String getImplPackageName() { return cfg.implPackageName(); } /** * Emit all the strings specified in the "CustomJavaCode" parameters of * the configuration file. */ protected void emitCustomJavaCode(final PrintWriter writer, final String className) throws Exception { final List code = cfg.customJavaCodeForClass(className); if (code.isEmpty()) return; writer.println(); writer.println(" // --- Begin CustomJavaCode .cfg declarations"); for (final String line : code) { writer.println(line); } writer.println(" // ---- End CustomJavaCode .cfg declarations"); } public String[] getClassAccessModifiers(final String classFQName) { String[] accessModifiers; final MethodAccess acc = cfg.accessControl(classFQName); if( PUBLIC_ABSTRACT == acc ) { accessModifiers = new String[] { PUBLIC.getJavaName(), PUBLIC_ABSTRACT.getJavaName() }; } else if( PACKAGE_PRIVATE == acc ) { accessModifiers = new String[] { PACKAGE_PRIVATE.getJavaName() }; } else if( PRIVATE == acc ) { throw new IllegalArgumentException("Class access "+classFQName+" cannot be private"); } else if( PROTECTED == acc ) { accessModifiers = new String[] { PROTECTED.getJavaName() }; } else { // default PUBLIC accessModifiers = new String[] { PUBLIC.getJavaName() }; } return accessModifiers; } /** * Write out any header information for the output files (class declaration * and opening brace, import statements, etc). */ protected void emitAllFileHeaders() throws IOException { try { final List imports = new ArrayList(cfg.imports()); imports.add(cfg.gluegenRuntimePackage()+".*"); imports.add(DynamicLookupHelper.class.getPackage().getName()+".*"); imports.add(Buffers.class.getPackage().getName()+".*"); imports.add(Buffer.class.getPackage().getName()+".*"); if (cfg.allStatic() || cfg.emitInterface()) { String[] interfaces; List userSpecifiedInterfaces = null; if (cfg.emitInterface()) { userSpecifiedInterfaces = cfg.extendedInterfaces(cfg.className()); } else { userSpecifiedInterfaces = cfg.implementedInterfaces(cfg.className()); } interfaces = new String[userSpecifiedInterfaces.size()]; userSpecifiedInterfaces.toArray(interfaces); final List intfDocs = cfg.javadocForClass(cfg.className()); final CodeGenUtils.EmissionCallback docEmitter = new CodeGenUtils.EmissionCallback() { @Override public void emit(final PrintWriter w) { for (final Iterator iter = intfDocs.iterator(); iter.hasNext(); ) { w.println(iter.next()); } } }; final String[] accessModifiers = getClassAccessModifiers(cfg.className()); CodeGenUtils.emitJavaHeaders( javaWriter, cfg.packageName(), cfg.className(), cfg.allStatic() ? true : false, imports, accessModifiers, interfaces, cfg.extendedParentClass(cfg.className()), docEmitter); } if (!cfg.allStatic() && cfg.emitImpl()) { final List implDocs = cfg.javadocForClass(cfg.implClassName()); final CodeGenUtils.EmissionCallback docEmitter = new CodeGenUtils.EmissionCallback() { @Override public void emit(final PrintWriter w) { for (final Iterator iter = implDocs.iterator(); iter.hasNext(); ) { w.println(iter.next()); } } }; String[] interfaces; List userSpecifiedInterfaces = null; userSpecifiedInterfaces = cfg.implementedInterfaces(cfg.implClassName()); int additionalNum = 0; if (cfg.className() != null) { additionalNum = 1; } interfaces = new String[additionalNum + userSpecifiedInterfaces.size()]; userSpecifiedInterfaces.toArray(interfaces); if (additionalNum == 1) { interfaces[userSpecifiedInterfaces.size()] = cfg.className(); } final String[] accessModifiers = getClassAccessModifiers(cfg.implClassName()); CodeGenUtils.emitJavaHeaders( javaImplWriter, cfg.implPackageName(), cfg.implClassName(), true, imports, accessModifiers, interfaces, cfg.extendedParentClass(cfg.implClassName()), docEmitter); } if (cfg.emitImpl()) { emitCHeader(cWriter(), getImplPackageName(), cfg.implClassName()); } } catch (final Exception e) { throw new RuntimeException( "Error emitting all file headers: cfg.allStatic()=" + cfg.allStatic() + " cfg.emitImpl()=" + cfg.emitImpl() + " cfg.emitInterface()=" + cfg.emitInterface(), e); } } protected void emitCHeader(final PrintWriter cWriter, final String packageName, final String className) { cWriter.println("#include "); cWriter.println("#include "); cWriter.println("#include "); cWriter.println(); if (getConfig().emitImpl()) { cWriter.println("#include "); cWriter.println(); cWriter.println("static jobject JVMUtil_NewDirectByteBufferCopy(JNIEnv *env, void * source_address, jlong capacity); /* forward decl. */"); cWriter.println(); } for (final String code : cfg.customCCode()) { cWriter.println(code); } cWriter.println(); } private static final String staticClassInitCodeCCode = "\n"+ "static const char * clazzNameBuffers = \"com/jogamp/common/nio/Buffers\";\n"+ "static const char * clazzNameBuffersStaticNewCstrName = \"newDirectByteBuffer\";\n"+ "static const char * clazzNameBuffersStaticNewCstrSignature = \"(I)Ljava/nio/ByteBuffer;\";\n"+ "static jclass clazzBuffers = NULL;\n"+ "static jmethodID cstrBuffersNew = NULL;\n"+ "static jboolean _initClazzAccessDone = JNI_FALSE;\n"+ "\n"+ "static jboolean _initClazzAccess(JNIEnv *env) {\n"+ " jclass c;\n"+ "\n"+ " if(NULL!=cstrBuffersNew) return JNI_TRUE;\n"+ "\n"+ " c = (*env)->FindClass(env, clazzNameBuffers);\n"+ " if(NULL==c) {\n"+ " fprintf(stderr, \"FatalError: Can't find %s\\n\", clazzNameBuffers);\n"+ " (*env)->FatalError(env, clazzNameBuffers);\n"+ " return JNI_FALSE;\n"+ " }\n"+ " clazzBuffers = (jclass)(*env)->NewGlobalRef(env, c);\n"+ " if(NULL==clazzBuffers) {\n"+ " fprintf(stderr, \"FatalError: Can't use %s\\n\", clazzNameBuffers);\n"+ " (*env)->FatalError(env, clazzNameBuffers);\n"+ " return JNI_FALSE;\n"+ " }\n"+ "\n"+ " cstrBuffersNew = (*env)->GetStaticMethodID(env, clazzBuffers,\n"+ " clazzNameBuffersStaticNewCstrName, clazzNameBuffersStaticNewCstrSignature);\n"+ " if(NULL==cstrBuffersNew) {\n"+ " fprintf(stderr, \"FatalError: can't create %s.%s %s\\n\",\n"+ " clazzNameBuffers,\n"+ " clazzNameBuffersStaticNewCstrName, clazzNameBuffersStaticNewCstrSignature);\n"+ " (*env)->FatalError(env, clazzNameBuffersStaticNewCstrName);\n"+ " return JNI_FALSE;\n"+ " }\n"+ " _initClazzAccessDone = JNI_TRUE;\n"+ " return JNI_TRUE;\n"+ "}\n"+ "\n"+ "static jobject JVMUtil_NewDirectByteBufferCopy(JNIEnv *env, void * source_address, jlong capacity) {\n"+ " jobject jbyteBuffer;\n"+ " void * byteBufferPtr;\n"+ "\n"+ " if( JNI_FALSE == _initClazzAccessDone ) {\n"+ " fprintf(stderr, \"FatalError: initializeImpl() not called\\n\");\n"+ " (*env)->FatalError(env, \"initializeImpl() not called\");\n"+ " return NULL;\n"+ " }\n"+ " jbyteBuffer = (*env)->CallStaticObjectMethod(env, clazzBuffers, cstrBuffersNew, capacity);\n"+ " byteBufferPtr = (*env)->GetDirectBufferAddress(env, jbyteBuffer);\n"+ " memcpy(byteBufferPtr, source_address, capacity);\n"+ " return jbyteBuffer;\n"+ "}\n"+ "\n"; private static final String staticClassInitCallJavaCode = "\n"+ " static {\n"+ " if( !initializeImpl() ) {\n"+ " throw new RuntimeException(\"Initialization failure\");\n"+ " }\n"+ " }\n"+ "\n"; protected void emitCInitCode(final PrintWriter cWriter, final String packageName, final String className) { if ( requiresStaticInitialization(className) ) { cWriter.println(staticClassInitCodeCCode); cWriter.println("JNIEXPORT jboolean JNICALL "+JavaEmitter.getJNIMethodNamePrefix(packageName, className)+"_initializeImpl(JNIEnv *env, jclass _unused) {"); cWriter.println(" return _initClazzAccess(env);"); cWriter.println("}"); cWriter.println(); cWriter.println("JNIEXPORT jint JNICALL "+JavaEmitter.getJNIMethodNamePrefix(packageName, className)+"_getCStringLengthImpl(JNIEnv *env, jclass _unused, jlong pString) {"); cWriter.println(" return 0 != pString ? strlen((const char*)(intptr_t)pString) : 0;"); cWriter.println("}"); cWriter.println(); } } protected void emitJavaInitCode(final PrintWriter jWriter, final String className) { if( null != jWriter && requiresStaticInitialization(className) ) { jWriter.println(); jWriter.println(" private static native boolean initializeImpl();"); jWriter.println(); jWriter.println(); jWriter.println(" private static native int getCStringLengthImpl(final long pString);"); jWriter.println(); if( !cfg.manualStaticInitCall(className) ) { jWriter.println(staticClassInitCallJavaCode); } } } /** * Write out any footer information for the output files (closing brace of * class definition, etc). */ protected void emitAllFileFooters() { if (cfg.allStatic() || cfg.emitInterface()) { javaWriter().println(); javaWriter().println("} // end of class " + cfg.className()); } if (!cfg.allStatic() && cfg.emitImpl()) { javaImplWriter().println(); javaImplWriter().println("} // end of class " + cfg.implClassName()); } } private JavaType javaType(final Class c) { return JavaType.createForClass(c); } /** Maps the C types in the specified function to Java types through the MethodBinding interface. Note that the JavaTypes in the returned MethodBinding are "intermediate" JavaTypes (some potentially representing C pointers rather than true Java types) and must be lowered to concrete Java types before creating emitters for them. */ private MethodBinding bindFunction(final FunctionSymbol sym, final MachineDataInfo curMachDesc, final JavaType containingType, final Type containingCType) { // System.out.println("bindFunction(0) "+sym.getReturnType()); final String name = sym.getName(); final JavaType javaReturnType; if (cfg.returnsString(sym)) { final PointerType prt = sym.getReturnType().asPointer(); if (prt == null || prt.getTargetType().asInt() == null || prt.getTargetType().getSize(curMachDesc) != 1) { throw new GlueGenException( "Cannot apply ReturnsString configuration directive to \"" + sym + "\". ReturnsString requires native method to have return type \"char *\"", sym.getASTLocusTag()); } javaReturnType = javaType(java.lang.String.class); } else { javaReturnType = typeToJavaType(sym.getReturnType(), curMachDesc); } // List of the indices of the arguments in this function that should be // converted from byte[] or short[] to String final List javaArgumentTypes = new ArrayList(); final List stringArgIndices = cfg.stringArguments(name); for (int i = 0; i < sym.getNumArguments(); i++) { final Type cArgType = sym.getArgumentType(i); JavaType mappedType = typeToJavaType(cArgType, curMachDesc); // System.out.println("C arg type -> \"" + cArgType + "\"" ); // System.out.println(" Java -> \"" + mappedType + "\"" ); // Take into account any ArgumentIsString configuration directives that apply if (stringArgIndices != null && stringArgIndices.contains(i)) { // System.out.println("Forcing conversion of " + binding.getName() + " arg #" + i + " from byte[] to String "); if (mappedType.isCVoidPointerType() || mappedType.isCCharPointerType() || mappedType.isCShortPointerType() || mappedType.isNIOPointerBuffer() || (mappedType.isArray() && (mappedType.getJavaClass() == ArrayTypes.byteBufferArrayClass) || (mappedType.getJavaClass() == ArrayTypes.shortBufferArrayClass))) { // convert mapped type from: // void*, byte[], and short[] to String // ByteBuffer[] and ShortBuffer[] to String[] if (mappedType.isArray() || mappedType.isNIOPointerBuffer()) { mappedType = javaType(ArrayTypes.stringArrayClass); } else { mappedType = javaType(String.class); } } else { throw new GlueGenException( "Cannot apply ArgumentIsString configuration directive to " + "argument " + i + " of \"" + sym + "\": argument type is not " + "a \"void*\", \"char *\", \"short *\", \"char**\", or \"short**\" equivalent", sym.getASTLocusTag()); } } javaArgumentTypes.add(mappedType); //System.out.println("During binding of [" + sym + "], added mapping from C type: " + cArgType + " to Java type: " + mappedType); } final String delegationImplName = null == containingType && null == containingCType ? cfg.getDelegatedImplementation(sym) : null; final MethodBinding mb = new MethodBinding(sym, delegationImplName, javaReturnType, javaArgumentTypes, containingType, containingCType); mangleBinding(mb); return mb; } private MethodBinding lowerMethodBindingPointerTypes(final MethodBinding inputBinding, final boolean convertToArrays, final boolean[] canProduceArrayVariant) { MethodBinding result = inputBinding; boolean arrayPossible = false; // System.out.println("lowerMethodBindingPointerTypes(0): "+result); for (int i = 0; i < inputBinding.getNumArguments(); i++) { final JavaType t = inputBinding.getJavaArgumentType(i); if (t.isCPrimitivePointerType()) { if (t.isCVoidPointerType()) { // These are always bound to java.nio.Buffer result = result.replaceJavaArgumentType(i, JavaType.forNIOBufferClass()); } else if (t.isCCharPointerType()) { arrayPossible = true; if (convertToArrays) { result = result.replaceJavaArgumentType(i, javaType(ArrayTypes.byteArrayClass)); } else { result = result.replaceJavaArgumentType(i, JavaType.forNIOByteBufferClass()); } } else if (t.isCShortPointerType()) { arrayPossible = true; if (convertToArrays) { result = result.replaceJavaArgumentType(i, javaType(ArrayTypes.shortArrayClass)); } else { result = result.replaceJavaArgumentType(i, JavaType.forNIOShortBufferClass()); } } else if (t.isCInt32PointerType()) { arrayPossible = true; if (convertToArrays) { result = result.replaceJavaArgumentType(i, javaType(ArrayTypes.intArrayClass)); } else { result = result.replaceJavaArgumentType(i, JavaType.forNIOIntBufferClass()); } } else if (t.isCInt64PointerType()) { arrayPossible = true; if (convertToArrays) { result = result.replaceJavaArgumentType(i, javaType(ArrayTypes.longArrayClass)); } else { result = result.replaceJavaArgumentType(i, JavaType.forNIOLongBufferClass()); } } else if (t.isCFloatPointerType()) { arrayPossible = true; if (convertToArrays) { result = result.replaceJavaArgumentType(i, javaType(ArrayTypes.floatArrayClass)); } else { result = result.replaceJavaArgumentType(i, JavaType.forNIOFloatBufferClass()); } } else if (t.isCDoublePointerType()) { arrayPossible = true; if (convertToArrays) { result = result.replaceJavaArgumentType(i, javaType(ArrayTypes.doubleArrayClass)); } else { result = result.replaceJavaArgumentType(i, JavaType.forNIODoubleBufferClass()); } } else { throw new GlueGenException("Unknown C pointer type " + t); } } } // System.out.println("lowerMethodBindingPointerTypes(1): "+result); // Always return primitive pointer types as NIO buffers final JavaType t = result.getJavaReturnType(); if (t.isCPrimitivePointerType()) { if (t.isCVoidPointerType()) { result = result.replaceJavaArgumentType(-1, JavaType.forNIOByteBufferClass()); } else if (t.isCCharPointerType()) { result = result.replaceJavaArgumentType(-1, JavaType.forNIOByteBufferClass()); } else if (t.isCShortPointerType()) { result = result.replaceJavaArgumentType(-1, JavaType.forNIOShortBufferClass()); } else if (t.isCInt32PointerType()) { result = result.replaceJavaArgumentType(-1, JavaType.forNIOIntBufferClass()); } else if (t.isCInt64PointerType()) { result = result.replaceJavaArgumentType(-1, JavaType.forNIOLongBufferClass()); } else if (t.isCFloatPointerType()) { result = result.replaceJavaArgumentType(-1, JavaType.forNIOFloatBufferClass()); } else if (t.isCDoublePointerType()) { result = result.replaceJavaArgumentType(-1, JavaType.forNIODoubleBufferClass()); } else { throw new GlueGenException("Unknown C pointer type " + t, result.getCReturnType().getASTLocusTag()); } } // System.out.println("lowerMethodBindingPointerTypes(2): "+result); if (canProduceArrayVariant != null) { canProduceArrayVariant[0] = arrayPossible; } return result; } /** * Allow specializations to modify the given {@link MethodBinding} * before {@link #expandMethodBinding(MethodBinding) expanding} and emission. */ protected void mangleBinding(final MethodBinding binding) { // NOP } // Expands a MethodBinding containing C primitive pointer types into // multiple variants taking Java primitive arrays and NIO buffers, subject // to the per-function "NIO only" rule in the configuration file protected List expandMethodBinding(final MethodBinding binding) { final List result = new ArrayList(); // Indicates whether it is possible to produce an array variant // Prevents e.g. char* -> String conversions from emitting two entry points final boolean[] canProduceArrayVariant = new boolean[1]; if (binding.signatureUsesCPrimitivePointers() || binding.signatureUsesCVoidPointers() || binding.signatureUsesCArrays()) { result.add(lowerMethodBindingPointerTypes(binding, false, canProduceArrayVariant)); // FIXME: should add new configuration flag for this if (canProduceArrayVariant[0] && (binding.signatureUsesCPrimitivePointers() || binding.signatureUsesCArrays()) && !cfg.useNIOOnly(binding.getName()) ) { result.add(lowerMethodBindingPointerTypes(binding, true, null)); } } else { result.add(binding); } return result; } private Type canonicalize(final Type t) { final Type res = canonMap.get(t); if (res != null) { return res; } else { canonMap.put(t, t); return t; } } /** * Converts first letter to upper case. */ private final String capitalizeString(final String string) { return Character.toUpperCase(string.charAt(0)) + string.substring(1); } }