import java.io.PrintStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
/**
* Emits a Java interface and Java & C implementation for a C function.
*
* <p> The Java interface will have Buffer and array variants for functions that
* have a typed pointer argument. The array variant will convert a single "<type> *data"
* argument to a pair of arguments "<type>[] data, int offset".
*/
public class JniCodeEmitter implements CodeEmitter {
// If true, use C++ style for calling through a JNIEnv *:
// env->Func(...)
// If false, use C style:
// (*env)->Func(env, ...)
static final boolean mUseCPlusPlus = true;
boolean mUseContextPointer = true;
String mClassPathName;
ParameterChecker mChecker;
PrintStream mJava10InterfaceStream;
PrintStream mJava10ExtInterfaceStream;
PrintStream mJava11InterfaceStream;
PrintStream mJava11ExtInterfaceStream;
PrintStream mJava11ExtPackInterfaceStream;
PrintStream mJavaImplStream;
PrintStream mCStream;
PrintStream mJavaInterfaceStream;
List<String> nativeRegistrations = new ArrayList<String>();
boolean needsExit;
static String indent = " ";
HashSet<String> mFunctionsEmitted = new HashSet<String>();
/**
* @param java10InterfaceStream the PrintStream to which to emit the Java interface for GL 1.0 functions
* @param java10ExtInterfaceStream the PrintStream to which to emit the Java interface for GL 1.0 extension functions
* @param java11InterfaceStream the PrintStream to which to emit the Java interface for GL 1.1 functions
* @param java11ExtInterfaceStream the PrintStream to which to emit the Java interface for GL 1.1 Extension functions
* @param java11ExtPackInterfaceStream the PrintStream to which to emit the Java interface for GL 1.1 Extension Pack functions
* @param javaImplStream the PrintStream to which to emit the Java implementation
* @param cStream the PrintStream to which to emit the C implementation
*/
public JniCodeEmitter(String classPathName,
ParameterChecker checker,
PrintStream java10InterfaceStream,
PrintStream java10ExtInterfaceStream,
PrintStream java11InterfaceStream,
PrintStream java11ExtInterfaceStream,
PrintStream java11ExtPackInterfaceStream,
PrintStream javaImplStream,
PrintStream cStream,
boolean useContextPointer) {
mClassPathName = classPathName;
mChecker = checker;
mJava10InterfaceStream = java10InterfaceStream;
mJava10ExtInterfaceStream = java10ExtInterfaceStream;
mJava11InterfaceStream = java11InterfaceStream;
mJava11ExtInterfaceStream = java11ExtInterfaceStream;
mJava11ExtPackInterfaceStream = java11ExtPackInterfaceStream;
mJavaImplStream = javaImplStream;
mCStream = cStream;
mUseContextPointer = useContextPointer;
}
public void setVersion(int version, boolean ext, boolean pack) {
if (version == 0) {
mJavaInterfaceStream = ext ? mJava10ExtInterfaceStream :
mJava10InterfaceStream;
} else if (version == 1) {
mJavaInterfaceStream = ext ?
(pack ? mJava11ExtPackInterfaceStream :
mJava11ExtInterfaceStream) :
mJava11InterfaceStream;
} else {
throw new RuntimeException("Bad version: " + version);
}
}
public void emitCode(CFunc cfunc, String original) {
JFunc jfunc;
String signature;
boolean duplicate;
if (cfunc.hasTypedPointerArg()) {
jfunc = JFunc.convert(cfunc, true);
// Don't emit duplicate functions
// These may appear because they are defined in multiple
// Java interfaces (e.g., GL11/GL11ExtensionPack)
signature = jfunc.toString();
duplicate = false;
if (mFunctionsEmitted.contains(signature)) {
duplicate = true;
} else {
mFunctionsEmitted.add(signature);
}
if (!duplicate) {
emitNativeDeclaration(jfunc, mJavaImplStream);
emitJavaCode(jfunc, mJavaImplStream);
}
emitJavaInterfaceCode(jfunc, mJavaInterfaceStream);
if (!duplicate) {
emitJniCode(jfunc, mCStream);
}
}
jfunc = JFunc.convert(cfunc, false);
signature = jfunc.toString();
duplicate = false;
if (mFunctionsEmitted.contains(signature)) {
duplicate = true;
} else {
mFunctionsEmitted.add(signature);
}
if (!duplicate) {
emitNativeDeclaration(jfunc, mJavaImplStream);
}
emitJavaInterfaceCode(jfunc, mJavaInterfaceStream);
if (!duplicate) {
emitJavaCode(jfunc, mJavaImplStream);
emitJniCode(jfunc, mCStream);
}
}
public void emitNativeDeclaration(JFunc jfunc, PrintStream out) {
out.println(" // C function " + jfunc.getCFunc().getOriginal());
out.println();
emitFunction(jfunc, out, true, false);
}
public void emitJavaInterfaceCode(JFunc jfunc, PrintStream out) {
emitFunction(jfunc, out, false, true);
}
public void emitJavaCode(JFunc jfunc, PrintStream out) {
emitFunction(jfunc, out, false, false);
}
void emitFunctionCall(JFunc jfunc, PrintStream out, String iii, boolean grabArray ) {
boolean isVoid = jfunc.getType().isVoid();
boolean isPointerFunc = jfunc.getName().endsWith("Pointer") &&
jfunc.getCFunc().hasPointerArg();
if (!isVoid) {
out.println(iii +
jfunc.getType() + " _returnValue;");
}
out.println(iii +
(isVoid ? "" : "_returnValue = ") +
jfunc.getName() +
(isPointerFunc ? "Bounds" : "" ) +
"(");
int numArgs = jfunc.getNumArgs();
for (int i = 0; i < numArgs; i++) {
String argName = jfunc.getArgName(i);
JType argType = jfunc.getArgType(i);
if (grabArray && argType.isTypedBuffer()) {
String typeName = argType.getBaseType();
typeName = typeName.substring(9, typeName.length() - 6);
out.println(iii + indent + "get" + typeName + "Array(" + argName + "),");
out.print(iii + indent + "getOffset(" + argName + ")");
} else {
out.print(iii + indent + argName);
}
if (i == numArgs - 1) {
if (isPointerFunc) {
out.println(",");
out.println(iii + indent + argName + ".remaining()");
} else {
out.println();
}
} else {
out.println(",");
}
}
out.println(iii + ");");
}
void printIfcheckPostamble(PrintStream out, boolean isBuffer,
boolean emitExceptionCheck, String iii) {
printIfcheckPostamble(out, isBuffer, emitExceptionCheck,
"offset", "_remaining", iii);
}
void printIfcheckPostamble(PrintStream out, boolean isBuffer,
boolean emitExceptionCheck,
String offset, String remaining, String iii) {
out.println(iii + " default:");
out.println(iii + " _needed = 0;");
out.println(iii + " break;");
out.println(iii + "}");
out.println(iii + "if (" + remaining + " < _needed) {");
if (emitExceptionCheck) {
out.println(iii + indent + "_exception = 1;");
}
out.println(iii + indent +
(mUseCPlusPlus ? "_env" : "(*_env)") +
"->ThrowNew(" +
(mUseCPlusPlus ? "" : "_env, ") +
"IAEClass, " +
"\"" +
(isBuffer ?
"remaining()" : "length - " + offset) +
" < needed\");");
out.println(iii + indent + "goto exit;");
needsExit = true;
out.println(iii + "}");
}
boolean isNullAllowed(CFunc cfunc) {
String[] checks = mChecker.getChecks(cfunc.getName());
int index = 1;
if (checks != null) {
while (index < checks.length) {
if (checks[index].equals("return")) {
index += 2;
} else if (checks[index].startsWith("check")) {
index += 3;
} else if (checks[index].equals("ifcheck")) {
index += 5;
} else if (checks[index].equals("unsupported")) {
index += 1;
} else if (checks[index].equals("nullAllowed")) {
return true;
} else {
System.out.println("Error: unknown keyword \"" +
checks[index] + "\"");
System.exit(0);
}
}
}
return false;
}
String getErrorReturnValue(CFunc cfunc) {
CType returnType = cfunc.getType();
boolean isVoid = returnType.isVoid();
if (isVoid) {
return null;
}
String[] checks = mChecker.getChecks(cfunc.getName());
int index = 1;
if (checks != null) {
while (index < checks.length) {
if (checks[index].equals("return")) {
return checks[index + 1];
} else if (checks[index].startsWith("check")) {
index += 3;
} else if (checks[index].equals("ifcheck")) {
index += 5;
} else if (checks[index].equals("unsupported")) {
index += 1;
} else if (checks[index].equals("nullAllowed")) {
index += 1;
} else {
System.out.println("Error: unknown keyword \"" +
checks[index] + "\"");
System.exit(0);
}
}
}
return null;
}
boolean isUnsupportedFunc(CFunc cfunc) {
String[] checks = mChecker.getChecks(cfunc.getName());
int index = 1;
if (checks != null) {
while (index < checks.length) {
if (checks[index].equals("unsupported")) {
return true;
} else if (checks[index].equals("return")) {
index += 2;
} else if (checks[index].startsWith("check")) {
index += 3;
} else if (checks[index].equals("ifcheck")) {
index += 5;
} else if (checks[index].equals("nullAllowed")) {
index += 1;
} else {
System.out.println("Error: unknown keyword \"" +
checks[index] + "\"");
System.exit(0);
}
}
}
return false;
}
void emitNativeBoundsChecks(CFunc cfunc, String cname, PrintStream out,
boolean isBuffer, boolean emitExceptionCheck,
String offset, String remaining, String iii) {
CType returnType = cfunc.getType();
boolean isVoid = returnType.isVoid();
String[] checks = mChecker.getChecks(cfunc.getName());
String checkVar;
String retval = getErrorReturnValue(cfunc);
boolean lastWasIfcheck = false;
int index = 1;
if (checks != null) {
boolean remainingDeclared = false;
boolean nullCheckDeclared = false;
boolean offsetChecked = false;
while (index < checks.length) {
if (checks[index].startsWith("check")) {
if (lastWasIfcheck) {
printIfcheckPostamble(out, isBuffer, emitExceptionCheck,
offset, remaining, iii);
}
lastWasIfcheck = false;
if (cname != null && !cname.equals(checks[index + 1])) {
index += 3;
continue;
}
out.println(iii + "if (" + remaining + " < " +
checks[index + 2] +
") {");
if (emitExceptionCheck) {
out.println(iii + indent + "_exception = 1;");
}
String exceptionClassName = "IAEClass";
// If the "check" keyword was of the form
// "check_<class name>", use the class name in the
// exception to be thrown
int underscore = checks[index].indexOf('_');
if (underscore >= 0) {
exceptionClassName = checks[index].substring(underscore + 1) + "Class";
}
out.println(iii + indent +
(mUseCPlusPlus ? "_env" : "(*_env)") +
"->ThrowNew(" +
(mUseCPlusPlus ? "" : "_env, ") +
exceptionClassName + ", " +
"\"" +
(isBuffer ?
"remaining()" : "length - " + offset) +
" < " + checks[index + 2] +
"\");");
out.println(iii + indent + "goto exit;");
needsExit = true;
out.println(iii + "}");
index += 3;
} else if (checks[index].equals("ifcheck")) {
String[] matches = checks[index + 4].split(",");
if (!lastWasIfcheck) {
out.println(iii + "int _needed;");
out.println(iii +
"switch (" +
checks[index + 3] +
") {");
}
for (int i = 0; i < matches.length; i++) {
out.println("#if defined(" + matches[i] + ")");
out.println(iii +
" case " +
matches[i] +
":");
out.println("#endif // defined(" + matches[i] + ")");
}
out.println(iii +
" _needed = " +
checks[index + 2] +
";");
out.println(iii +
" break;");
lastWasIfcheck = true;
index += 5;
} else if (checks[index].equals("return")) {
// ignore
index += 2;
} else if (checks[index].equals("unsupported")) {
// ignore
index += 1;
} else if (checks[index].equals("nullAllowed")) {
// ignore
index += 1;
} else {
System.out.println("Error: unknown keyword \"" +
checks[index] + "\"");
System.exit(0);
}
}
}
if (lastWasIfcheck) {
printIfcheckPostamble(out, isBuffer, emitExceptionCheck, iii);
}
}
boolean hasNonConstArg(JFunc jfunc, CFunc cfunc,
List<Integer> nonPrimitiveArgs) {
if (nonPrimitiveArgs.size() > 0) {
for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
int idx = nonPrimitiveArgs.get(i).intValue();
int cIndex = jfunc.getArgCIndex(idx);
if (jfunc.getArgType(idx).isArray()) {
if (!cfunc.getArgType(cIndex).isConst()) {
return true;
}
} else if (jfunc.getArgType(idx).isBuffer()) {
if (!cfunc.getArgType(cIndex).isConst()) {
return true;
}
}
}
}
return false;
}
/**
* Emit a function in several variants:
*
* if nativeDecl: public native <returntype> func(args);
*
* if !nativeDecl:
* if interfaceDecl: public <returntype> func(args);
* if !interfaceDecl: public <returntype> func(args) { body }
*/
void emitFunction(JFunc jfunc,
PrintStream out,
boolean nativeDecl, boolean interfaceDecl) {
boolean isPointerFunc =
jfunc.getName().endsWith("Pointer") &&
jfunc.getCFunc().hasPointerArg();
if (!nativeDecl && !interfaceDecl && !isPointerFunc) {
// If it's not a pointer function, we've already emitted it
// with nativeDecl == true
return;
}
if (isPointerFunc) {
out.println(indent +
(nativeDecl ? "private native " :
(interfaceDecl ? "" : "public ")) +
jfunc.getType() + " " +
jfunc.getName() +
(nativeDecl ? "Bounds" : "") +
"(");
} else {
out.println(indent +
(nativeDecl ? "public native " :
(interfaceDecl ? "" : "public ")) +
jfunc.getType() + " " +
jfunc.getName() +
"(");
}
int numArgs = jfunc.getNumArgs();
for (int i = 0; i < numArgs; i++) {
String argName = jfunc.getArgName(i);
JType argType = jfunc.getArgType(i);
out.print(indent + indent + argType + " " + argName);
if (i == numArgs - 1) {
if (isPointerFunc && nativeDecl) {
out.println(",");
out.println(indent + indent + "int remaining");
} else {
out.println();
}
} else {
out.println(",");
}
}
if (nativeDecl || interfaceDecl) {
out.println(indent + ");");
} else {
out.println(indent + ") {");
String iii = indent + indent;
String fname = jfunc.getName();
if (isPointerFunc) {
// TODO - deal with VBO variants
if (fname.equals("glColorPointer")) {
out.println(iii + "if ((size == 4) &&");
out.println(iii + " ((type == GL_FLOAT) ||");
out.println(iii + " (type == GL_UNSIGNED_BYTE) ||");
out.println(iii + " (type == GL_FIXED)) &&");
out.println(iii + " (stride >= 0)) {");
out.println(iii + indent + "_colorPointer = pointer;");
out.println(iii + "}");
} else if (fname.equals("glNormalPointer")) {
out.println(iii + "if (((type == GL_FLOAT) ||");
out.println(iii + " (type == GL_BYTE) ||");
out.println(iii + " (type == GL_SHORT) ||");
out.println(iii + " (type == GL_FIXED)) &&");
out.println(iii + " (stride >= 0)) {");
out.println(iii + indent + "_normalPointer = pointer;");
out.println(iii + "}");
} else if (fname.equals("glTexCoordPointer")) {
out.println(iii + "if (((size == 2) ||");
out.println(iii + " (size == 3) ||");
out.println(iii + " (size == 4)) &&");
out.println(iii + " ((type == GL_FLOAT) ||");
out.println(iii + " (type == GL_BYTE) ||");
out.println(iii + " (type == GL_SHORT) ||");
out.println(iii + " (type == GL_FIXED)) &&");
out.println(iii + " (stride >= 0)) {");
out.println(iii + indent + "_texCoordPointer = pointer;");
out.println(iii + "}");
} else if (fname.equals("glVertexPointer")) {
out.println(iii + "if (((size == 2) ||");
out.println(iii + " (size == 3) ||");
out.println(iii + " (size == 4)) &&");
out.println(iii + " ((type == GL_FLOAT) ||");
out.println(iii + " (type == GL_BYTE) ||");
out.println(iii + " (type == GL_SHORT) ||");
out.println(iii + " (type == GL_FIXED)) &&");
out.println(iii + " (stride >= 0)) {");
out.println(iii + indent + "_vertexPointer = pointer;");
out.println(iii + "}");
}
}
// emitBoundsChecks(jfunc, out, iii);
emitFunctionCall(jfunc, out, iii, false);
boolean isVoid = jfunc.getType().isVoid();
if (!isVoid) {
out.println(indent + indent + "return _returnValue;");
}
out.println(indent + "}");
}
out.println();
}
public static String getJniName(JType jType) {
String jniName = "";
if (jType.isClass()) {
return "L" + jType.getBaseType() + ";";
} else if (jType.isArray()) {
jniName = "[";
}
String baseType = jType.getBaseType();
if (baseType.equals("int")) {
jniName += "I";
} else if (baseType.equals("float")) {
jniName += "F";
} else if (baseType.equals("boolean")) {
jniName += "Z";
} else if (baseType.equals("short")) {
jniName += "S";
} else if (baseType.equals("long")) {
jniName += "L";
} else if (baseType.equals("byte")) {
jniName += "B";
}
return jniName;
}
String getJniType(JType jType) {
if (jType.isVoid()) {
return "void";
}
String baseType = jType.getBaseType();
if (jType.isPrimitive()) {
if (baseType.equals("String")) {
return "jstring";
} else {
return "j" + baseType;
}
} else if (jType.isArray()) {
return "j" + baseType + "Array";
} else {
return "jobject";
}
}
String getJniMangledName(String name) {
name = name.replaceAll("_", "_1");
name = name.replaceAll(";", "_2");
name = name.replaceAll("\\[", "_3");
return name;
}
public void emitJniCode(JFunc jfunc, PrintStream out) {
CFunc cfunc = jfunc.getCFunc();
// Emit comment identifying original C function
//
// Example:
//
// /* void glClipPlanef ( GLenum plane, const GLfloat *equation ) */
//
out.println("/* " + cfunc.getOriginal() + " */");
// Emit JNI signature (name)
//
// Example:
//
// void
// android_glClipPlanef__I_3FI
//
String outName = "android_" + jfunc.getName();
boolean isPointerFunc = outName.endsWith("Pointer") &&
jfunc.getCFunc().hasPointerArg();
boolean isVBOPointerFunc = (outName.endsWith("Pointer") ||
outName.endsWith("DrawElements")) &&
!jfunc.getCFunc().hasPointerArg();
if (isPointerFunc) {
outName += "Bounds";
}
out.print("static ");
out.println(getJniType(jfunc.getType()));
out.print(outName);
String rsignature = getJniName(jfunc.getType());
String signature = "";
int numArgs = jfunc.getNumArgs();
for (int i = 0; i < numArgs; i++) {
JType argType = jfunc.getArgType(i);
signature += getJniName(argType);
}
if (isPointerFunc) {
signature += "I";
}
// Append signature to function name
String sig = getJniMangledName(signature).replace('.', '_');
out.print("__" + sig);
outName += "__" + sig;
signature = signature.replace('.', '/');
rsignature = rsignature.replace('.', '/');
out.println();
if (rsignature.length() == 0) {
rsignature = "V";
}
String s = "{\"" +
jfunc.getName() +
(isPointerFunc ? "Bounds" : "") +
"\", \"(" + signature +")" +
rsignature +
"\", (void *) " +
outName +
" },";
nativeRegistrations.add(s);
List<Integer> nonPrimitiveArgs = new ArrayList<Integer>();
int numBufferArgs = 0;
List<String> bufferArgNames = new ArrayList<String>();
// Emit JNI signature (arguments)
//
// Example:
//
// (JNIEnv *_env, jobject this, jint plane, jfloatArray equation_ref, jint offset) {
//
out.print(" (JNIEnv *_env, jobject _this");
for (int i = 0; i < numArgs; i++) {
out.print(", ");
JType argType = jfunc.getArgType(i);
String suffix;
if (!argType.isPrimitive()) {
if (argType.isArray()) {
suffix = "_ref";
} else {
suffix = "_buf";
}
nonPrimitiveArgs.add(new Integer(i));
if (jfunc.getArgType(i).isBuffer()) {
int cIndex = jfunc.getArgCIndex(i);
String cname = cfunc.getArgName(cIndex);
bufferArgNames.add(cname);
numBufferArgs++;
}
} else {
suffix = "";
}
out.print(getJniType(argType) + " " + jfunc.getArgName(i) + suffix);
}
if (isPointerFunc) {
out.print(", jint remaining");
}
out.println(") {");
int numArrays = 0;
int numBuffers = 0;
for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
int idx = nonPrimitiveArgs.get(i).intValue();
int cIndex = jfunc.getArgCIndex(idx);
String cname = cfunc.getArgName(cIndex);
if (jfunc.getArgType(idx).isArray()) {
++numArrays;
}
if (jfunc.getArgType(idx).isBuffer()) {
++numBuffers;
}
}
// Emit method body
// Emit local variable declarations for _exception and _returnValue
//
// Example:
//
// android::gl::ogles_context_t *ctx;
//
// jint _exception;
// GLenum _returnValue;
//
CType returnType = cfunc.getType();
boolean isVoid = returnType.isVoid();
boolean isUnsupported = isUnsupportedFunc(cfunc);
if (isUnsupported) {
out.println(indent +
"_env->ThrowNew(UOEClass,");
out.println(indent +
" \"" + cfunc.getName() + "\");");
if (!isVoid) {
String retval = getErrorReturnValue(cfunc);
out.println(indent + "return " + retval + ";");
}
out.println("}");
out.println();
return;
}
if (mUseContextPointer) {
out.println(indent +
"android::gl::ogles_context_t *ctx = getContext(_env, _this);");
}
boolean emitExceptionCheck = (numArrays > 0 || numBuffers > 0) &&
hasNonConstArg(jfunc, cfunc, nonPrimitiveArgs);
// mChecker.getChecks(cfunc.getName()) != null
// Emit an _exeption variable if there will be error checks
if (emitExceptionCheck) {
out.println(indent + "jint _exception = 0;");
}
// Emit a single _array or multiple _XXXArray variables
if (numBufferArgs == 1) {
out.println(indent + "jarray _array = (jarray) 0;");
} else {
for (int i = 0; i < numBufferArgs; i++) {
out.println(indent + "jarray _" + bufferArgNames.get(i) +
"Array = (jarray) 0;");
}
}
if (!isVoid) {
String retval = getErrorReturnValue(cfunc);
if (retval != null) {
out.println(indent + returnType.getDeclaration() +
" _returnValue = " + retval + ";");
} else {
out.println(indent + returnType.getDeclaration() +
" _returnValue;");
}
}
// Emit local variable declarations for pointer arguments
//
// Example:
//
// GLfixed *eqn_base;
// GLfixed *eqn;
//
String offset = "offset";
String remaining = "_remaining";
if (nonPrimitiveArgs.size() > 0) {
for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
int idx = nonPrimitiveArgs.get(i).intValue();
int cIndex = jfunc.getArgCIndex(idx);
String cname = cfunc.getArgName(cIndex);
CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
String decl = type.getDeclaration();
if (jfunc.getArgType(idx).isArray()) {
out.println(indent +
decl +
(decl.endsWith("*") ? "" : " ") +
jfunc.getArgName(idx) +
"_base = (" + decl + ") 0;");
}
remaining = (numArrays <= 1 && numBuffers <= 1) ? "_remaining" :
"_" + cname + "Remaining";
out.println(indent +
"jint " + remaining + ";");
out.println(indent +
decl +
(decl.endsWith("*") ? "" : " ") +
jfunc.getArgName(idx) +
" = (" + decl + ") 0;");
}
out.println();
}
String retval = isVoid ? "" : " _returnValue";
// Emit 'GetPrimitiveArrayCritical' for arrays
// Emit 'GetPointer' calls for Buffer pointers
int bufArgIdx = 0;
if (nonPrimitiveArgs.size() > 0) {
for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
int idx = nonPrimitiveArgs.get(i).intValue();
int cIndex = jfunc.getArgCIndex(idx);
String cname = cfunc.getArgName(cIndex);
offset = numArrays <= 1 ? "offset" :
cname + "Offset";
remaining = (numArrays <= 1 && numBuffers <= 1) ? "_remaining" :
"_" + cname + "Remaining";
if (jfunc.getArgType(idx).isArray()) {
out.println(indent +
"if (!" +
cname +
"_ref) {");
if (emitExceptionCheck) {
out.println(indent + indent + "_exception = 1;");
}
out.println(indent + " " +
(mUseCPlusPlus ? "_env" : "(*_env)") +
"->ThrowNew(" +
(mUseCPlusPlus ? "" : "_env, ") +
"IAEClass, " +
"\"" + cname +
" == null\");");
out.println(indent + " goto exit;");
needsExit = true;
out.println(indent + "}");
out.println(indent + "if (" + offset + " < 0) {");
if (emitExceptionCheck) {
out.println(indent + indent + "_exception = 1;");
}
out.println(indent + " " +
(mUseCPlusPlus ? "_env" : "(*_env)") +
"->ThrowNew(" +
(mUseCPlusPlus ? "" : "_env, ") +
"IAEClass, " +
"\"" + offset + " < 0\");");
out.println(indent + " goto exit;");
needsExit = true;
out.println(indent + "}");
out.println(indent + remaining + " = " +
(mUseCPlusPlus ? "_env" : "(*_env)") +
"->GetArrayLength(" +
(mUseCPlusPlus ? "" : "_env, ") +
cname + "_ref) - " + offset + ";");
emitNativeBoundsChecks(cfunc, cname, out, false,
emitExceptionCheck,
offset, remaining, " ");
out.println(indent +
cname +
"_base = (" +
cfunc.getArgType(cIndex).getDeclaration() +
")");
out.println(indent + " " +
(mUseCPlusPlus ? "_env" : "(*_env)") +
"->GetPrimitiveArrayCritical(" +
(mUseCPlusPlus ? "" : "_env, ") +
jfunc.getArgName(idx) +
"_ref, (jboolean *)0);");
out.println(indent +
cname + " = " + cname + "_base + " + offset +
";");
out.println();
} else {
String array = numBufferArgs <= 1 ? "_array" :
"_" + bufferArgNames.get(bufArgIdx++) + "Array";
boolean nullAllowed = isNullAllowed(cfunc);
if (nullAllowed) {
out.println(indent + "if (" + cname + "_buf) {");
out.print(indent);
}
out.println(indent +
cname +
" = (" +
cfunc.getArgType(cIndex).getDeclaration() +
")getPointer(_env, " +
cname +
"_buf, &" + array + ", &" + remaining + ");");
if (nullAllowed) {
out.println(indent + "}");
}
emitNativeBoundsChecks(cfunc, cname, out, true,
emitExceptionCheck,
offset, remaining, " ");
}
}
}
if (!isVoid) {
out.print(indent + "_returnValue = ");
} else {
out.print(indent);
}
String name = cfunc.getName();
if (mUseContextPointer) {
name = name.substring(2, name.length()); // Strip off 'gl' prefix
name = name.substring(0, 1).toLowerCase() +
name.substring(1, name.length());
out.print("ctx->procs.");
}
out.print(name + (isPointerFunc ? "Bounds" : "") + "(");
numArgs = cfunc.getNumArgs();
if (numArgs == 0) {
if (mUseContextPointer) {
out.println("ctx);");
} else {
out.println(");");
}
} else {
if (mUseContextPointer) {
out.println("ctx,");
} else {
out.println();
}
for (int i = 0; i < numArgs; i++) {
String typecast;
if (i == numArgs - 1 && isVBOPointerFunc) {
typecast = "const GLvoid *";
} else {
typecast = cfunc.getArgType(i).getDeclaration();
}
out.print(indent + indent +
"(" +
typecast +
")" +
cfunc.getArgName(i));
if (i == numArgs - 1) {
if (isPointerFunc) {
out.println(",");
out.println(indent + indent + "(GLsizei)remaining");
} else {
out.println();
}
} else {
out.println(",");
}
}
out.println(indent + ");");
}
if (needsExit) {
out.println();
out.println("exit:");
needsExit = false;
}
bufArgIdx = 0;
if (nonPrimitiveArgs.size() > 0) {
for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
int idx = nonPrimitiveArgs.get(i).intValue();
int cIndex = jfunc.getArgCIndex(idx);
if (jfunc.getArgType(idx).isArray()) {
// If the argument is 'const', GL will not write to it.
// In this case, we can use the 'JNI_ABORT' flag to avoid
// the need to write back to the Java array
out.println(indent +
"if (" + jfunc.getArgName(idx) + "_base) {");
out.println(indent + indent +
(mUseCPlusPlus ? "_env" : "(*_env)") +
"->ReleasePrimitiveArrayCritical(" +
(mUseCPlusPlus ? "" : "_env, ") +
jfunc.getArgName(idx) + "_ref, " +
cfunc.getArgName(cIndex) +
"_base,");
out.println(indent + indent + indent +
(cfunc.getArgType(cIndex).isConst() ?
"JNI_ABORT" :
"_exception ? JNI_ABORT: 0") +
");");
out.println(indent + "}");
} else if (jfunc.getArgType(idx).isBuffer()) {
String array = numBufferArgs <= 1 ? "_array" :
"_" + bufferArgNames.get(bufArgIdx++) + "Array";
out.println(indent + "if (" + array + ") {");
out.println(indent + indent +
"releasePointer(_env, " + array + ", " +
cfunc.getArgName(cIndex) +
", " +
(cfunc.getArgType(cIndex).isConst() ?
"JNI_FALSE" : "_exception ? JNI_FALSE : JNI_TRUE") +
");");
out.println(indent + "}");
}
}
}
if (!isVoid) {
out.println(indent + "return _returnValue;");
}
out.println("}");
out.println();
}
public void addNativeRegistration(String s) {
nativeRegistrations.add(s);
}
public void emitNativeRegistration() {
mCStream.println("static const char *classPathName = \"" +
mClassPathName +
"\";");
mCStream.println();
mCStream.println("static JNINativeMethod methods[] = {");
mCStream.println("{\"_nativeClassInit\", \"()V\", (void*)nativeClassInit },");
Iterator<String> i = nativeRegistrations.iterator();
while (i.hasNext()) {
mCStream.println(i.next());
}
mCStream.println("};");
mCStream.println();
mCStream.println("int register_com_google_android_gles_jni_GLImpl(JNIEnv *_env)");
mCStream.println("{");
mCStream.println(indent +
"int err;");
mCStream.println(indent +
"err = android::AndroidRuntime::registerNativeMethods(_env, classPathName, methods, NELEM(methods));");
mCStream.println(indent + "return err;");
mCStream.println("}");
}
}