blob: 4324f984443d4bd29c4dbfc0989a71320237f574 [file] [log] [blame]
/*******************************************************************************
* Copyright (c) 2004, 2017 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.tools.internal;
import java.lang.reflect.*;
import java.util.*;
public class StructsGenerator extends JNIGenerator {
boolean header;
static final boolean GLOBAL_REF = false;
public StructsGenerator(boolean header) {
this.header = header;
}
@Override
public void generateCopyright() {
outputln(fixDelimiter(getMetaData().getCopyright()));
}
@Override
public void generateIncludes() {
if (header) {
output("#include \"");
output(getOutputName());
outputln(".h\"");
} else {
outputln("#include \"swt.h\"");
output("#include \"");
output(getOutputName());
outputln("_structs.h\"");
}
outputln();
}
@Override
public void generate(JNIClass clazz) {
int j = 0;
JNIField[] fields = clazz.getDeclaredFields();
for (; j < fields.length; j++) {
JNIField field = fields[j];
int mods = field.getModifiers();
if ((mods & Modifier.PUBLIC) != 0 && (mods & Modifier.STATIC) == 0) {
break;
}
}
if (j == fields.length) return;
if (header) {
generateHeaderFile(clazz);
} else {
generateSourceFile(clazz);
}
}
@Override
public String getExtension() {
return header ? ".h" : super.getExtension();
}
@Override
public String getSuffix() {
return "_structs";
}
void generateExcludes(JNIClass[] classes) {
HashSet<String> excludes = new HashSet<>();
for (JNIClass clazz : classes) {
String exclude = clazz.getExclude();
if (exclude.length() != 0) {
excludes.add(exclude);
}
}
for (String exclude : excludes) {
outputln(exclude);
for (JNIClass clazz : classes) {
String classExclude = clazz.getExclude();
if (exclude.equals(classExclude)) {
output("#define NO_");
outputln(clazz.getSimpleName());
}
}
outputln("#endif");
outputln();
}
}
void generateHeaderFile(JNIClass clazz) {
generateSourceStart(clazz);
generatePrototypes(clazz);
generateBlankMacros(clazz);
generateSourceEnd();
outputln();
}
void generateSourceFile(JNIClass clazz) {
generateSourceStart(clazz);
generateFIDsStructure(clazz);
outputln();
generateGlobalVar(clazz);
outputln();
generateFunctions(clazz);
generateSourceEnd();
outputln();
}
void generateSourceStart(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
output("#ifndef NO_");
outputln(clazzName);
}
void generateSourceEnd() {
outputln("#endif");
}
void generateGlobalVar(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
output(clazzName);
output("_FID_CACHE ");
output(clazzName);
outputln("Fc;");
}
void generateBlankMacros(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
outputln("#else");
output("#define cache");
output(clazzName);
outputln("Fields(a,b)");
output("#define get");
output(clazzName);
outputln("Fields(a,b,c) NULL");
output("#define set");
output(clazzName);
outputln("Fields(a,b,c)");
output("#define ");
output(clazzName);
outputln("_sizeof() 0");
}
void generatePrototypes(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
output("void cache");
output(clazzName);
outputln("Fields(JNIEnv *env, jobject lpObject);");
if (clazz.getFlag(Flags.FLAG_STRUCT)) {
output("struct ");
}
output(clazzName);
output(" *get");
output(clazzName);
output("Fields(JNIEnv *env, jobject lpObject, ");
if (clazz.getFlag(Flags.FLAG_STRUCT)) {
output("struct ");
}
output(clazzName);
outputln(" *lpStruct);");
output("void set");
output(clazzName);
output("Fields(JNIEnv *env, jobject lpObject, ");
if (clazz.getFlag(Flags.FLAG_STRUCT)) {
output("struct ");
}
output(clazzName);
outputln(" *lpStruct);");
output("#define ");
output(clazzName);
output("_sizeof() sizeof(");
if (clazz.getFlag(Flags.FLAG_STRUCT)) {
output("struct ");
}
output(clazzName);
outputln(")");
}
void generateFIDsStructure(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
output("typedef struct ");
output(clazzName);
outputln("_FID_CACHE {");
outputln("\tint cached;");
outputln("\tjclass clazz;");
output("\tjfieldID ");
boolean first = true;
for (JNIField field : clazz.getDeclaredFields()) {
if (ignoreField(field)) continue;
if (!first) output(", ");
output(field.getName());
first = false;
}
outputln(";");
output("} ");
output(clazzName);
outputln("_FID_CACHE;");
}
void generateCacheFunction(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
output("void cache");
output(clazzName);
outputln("Fields(JNIEnv *env, jobject lpObject)");
outputln("{");
output("\tif (");
output(clazzName);
outputln("Fc.cached) return;");
JNIClass superclazz = clazz.getSuperclass();
if (!superclazz.getName().equals("java.lang.Object")) {
String superName = superclazz.getSimpleName();
output("\tcache");
output(superName);
outputln("Fields(env, lpObject);");
}
output("\t");
output(clazzName);
boolean isCPP = getCPP();
if (isCPP) {
if (GLOBAL_REF) {
output("Fc.clazz = (jclass)env->NewGlobalRef(env->GetObjectClass(lpObject));");
} else {
output("Fc.clazz = env->GetObjectClass(lpObject);");
}
} else {
if (GLOBAL_REF) {
output("Fc.clazz = (*env)->NewGlobalRef(env, (*env)->GetObjectClass(env, lpObject));");
} else {
output("Fc.clazz = (*env)->GetObjectClass(env, lpObject);");
}
}
outputln();
for (JNIField field : clazz.getDeclaredFields()) {
if (ignoreField(field)) continue;
output("\t");
output(clazzName);
output("Fc.");
output(field.getName());
if (isCPP) {
output(" = env->GetFieldID(");
} else {
output(" = (*env)->GetFieldID(env, ");
}
output(clazzName);
output("Fc.clazz, \"");
output(field.getName());
JNIType type = field.getType();
output("\", ");
output("\"");
output(type.getTypeSignature());
output("\"");
outputln(");");
}
output("\t");
output(clazzName);
outputln("Fc.cached = 1;");
outputln("}");
}
void generateGetFields(JNIClass clazz) {
JNIClass superclazz = clazz.getSuperclass();
String clazzName = clazz.getSimpleName();
String superName = superclazz.getSimpleName();
if (!superclazz.getName().equals("java.lang.Object")) {
/* Windows exception - cannot call get/set function of super class in this case */
if (!(clazzName.equals(superName + "A") || clazzName.equals(superName + "W"))) {
output("\tget");
output(superName);
output("Fields(env, lpObject, (");
output(superName);
outputln(" *)lpStruct);");
} else {
generateGetFields(superclazz);
}
}
for (JNIField field : clazz.getDeclaredFields()) {
if (ignoreField(field)) continue;
String exclude = field.getExclude();
if (exclude.length() != 0) {
outputln(exclude);
}
boolean noWinCE = field.getFlag(FLAG_NO_WINCE);
if (noWinCE) {
outputln("#ifndef _WIN32_WCE");
}
JNIType type = field.getType();
String typeName = type.getSimpleName();
String accessor = field.getAccessor();
if (accessor == null || accessor.length() == 0) accessor = field.getName();
boolean isCPP = getCPP();
if (type.isPrimitive()) {
output("\tlpStruct->");
output(accessor);
output(" = ");
output(field.getCast());
if (isCPP) {
output("env->Get");
} else {
output("(*env)->Get");
}
output(type.getTypeSignature1());
if (isCPP) {
output("Field(lpObject, ");
} else {
output("Field(env, lpObject, ");
}
output(field.getDeclaringClass().getSimpleName());
output("Fc.");
output(field.getName());
output(");");
} else if (type.isArray()) {
JNIType componentType = type.getComponentType();
if (componentType.isPrimitive()) {
outputln("\t{");
output("\t");
output(type.getTypeSignature2());
output(" lpObject1 = (");
output(type.getTypeSignature2());
if (isCPP) {
output(")env->GetObjectField(lpObject, ");
} else {
output(")(*env)->GetObjectField(env, lpObject, ");
}
output(field.getDeclaringClass().getSimpleName());
output("Fc.");
output(field.getName());
outputln(");");
if (isCPP) {
output("\tenv->Get");
} else {
output("\t(*env)->Get");
}
output(componentType.getTypeSignature1());
if (isCPP) {
output("ArrayRegion(lpObject1, 0, sizeof(lpStruct->");
} else {
output("ArrayRegion(env, lpObject1, 0, sizeof(lpStruct->");
}
output(accessor);
output(")");
if (!componentType.isType("byte")) {
output(" / sizeof(");
output(componentType.getTypeSignature2());
output(")");
}
output(", (");
output(type.getTypeSignature4(false));
output(")");
if (field.getFlag(FLAG_STRUCT)) {
output("&");
}
output("lpStruct->");
output(accessor);
outputln(");");
output("\t}");
} else {
throw new Error("not done");
}
} else {
outputln("\t{");
if (isCPP) {
output("\tjobject lpObject1 = env->GetObjectField(lpObject, ");
} else {
output("\tjobject lpObject1 = (*env)->GetObjectField(env, lpObject, ");
}
output(field.getDeclaringClass().getSimpleName());
output("Fc.");
output(field.getName());
outputln(");");
output("\tif (lpObject1 != NULL) get");
output(typeName);
output("Fields(env, lpObject1, &lpStruct->");
output(accessor);
outputln(");");
output("\t}");
}
outputln();
if (noWinCE) {
outputln("#endif");
}
if (exclude.length() != 0) {
outputln("#endif");
}
}
}
void generateGetFunction(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
if (clazz.getFlag(Flags.FLAG_STRUCT)) {
output("struct ");
}
output(clazzName);
output(" *get");
output(clazzName);
output("Fields(JNIEnv *env, jobject lpObject, ");
if (clazz.getFlag(Flags.FLAG_STRUCT)) {
output("struct ");
}
output(clazzName);
outputln(" *lpStruct)");
outputln("{");
output("\tif (!");
output(clazzName);
output("Fc.cached) cache");
output(clazzName);
outputln("Fields(env, lpObject);");
generateGetFields(clazz);
outputln("\treturn lpStruct;");
outputln("}");
}
void generateSetFields(JNIClass clazz) {
JNIClass superclazz = clazz.getSuperclass();
String clazzName = clazz.getSimpleName();
String superName = superclazz.getSimpleName();
if (!superclazz.getName().equals("java.lang.Object")) {
/* Windows exception - cannot call get/set function of super class in this case */
if (!(clazzName.equals(superName + "A") || clazzName.equals(superName + "W"))) {
output("\tset");
output(superName);
output("Fields(env, lpObject, (");
output(superName);
outputln(" *)lpStruct);");
} else {
generateSetFields(superclazz);
}
}
for (JNIField field : clazz.getDeclaredFields()) {
if (ignoreField(field)) continue;
String exclude = field.getExclude();
if (exclude.length() != 0) {
outputln(exclude);
}
boolean noWinCE = field.getFlag(FLAG_NO_WINCE);
if (noWinCE) {
outputln("#ifndef _WIN32_WCE");
}
JNIType type = field.getType();
String typeName = type.getSimpleName();
String accessor = field.getAccessor();
if (accessor == null || accessor.length() == 0) accessor = field.getName();
boolean isCPP = getCPP();
if (type.isPrimitive()) {
if (isCPP) {
output("\tenv->Set");
} else {
output("\t(*env)->Set");
}
output(type.getTypeSignature1());
if (isCPP) {
output("Field(lpObject, ");
} else {
output("Field(env, lpObject, ");
}
output(field.getDeclaringClass().getSimpleName());
output("Fc.");
output(field.getName());
output(", (");
output(type.getTypeSignature2());
output(")lpStruct->");
output(accessor);
output(");");
} else if (type.isArray()) {
JNIType componentType = type.getComponentType();
if (componentType.isPrimitive()) {
outputln("\t{");
output("\t");
output(type.getTypeSignature2());
output(" lpObject1 = (");
output(type.getTypeSignature2());
if (isCPP) {
output(")env->GetObjectField(lpObject, ");
} else {
output(")(*env)->GetObjectField(env, lpObject, ");
}
output(field.getDeclaringClass().getSimpleName());
output("Fc.");
output(field.getName());
outputln(");");
if (isCPP) {
output("\tenv->Set");
} else {
output("\t(*env)->Set");
}
output(componentType.getTypeSignature1());
if (isCPP) {
output("ArrayRegion(lpObject1, 0, sizeof(lpStruct->");
} else {
output("ArrayRegion(env, lpObject1, 0, sizeof(lpStruct->");
}
output(accessor);
output(")");
if (!componentType.isType("byte")) {
output(" / sizeof(");
output(componentType.getTypeSignature2());
output(")");
}
output(", (");
output(type.getTypeSignature4(false));
output(")");
if (field.getFlag(FLAG_STRUCT)) {
output("&");
}
output("lpStruct->");
output(accessor);
outputln(");");
output("\t}");
} else {
throw new Error("not done");
}
} else {
outputln("\t{");
output("\tjobject lpObject1 = (*env)->GetObjectField(env, lpObject, ");
output(field.getDeclaringClass().getSimpleName());
output("Fc.");
output(field.getName());
outputln(");");
output("\tif (lpObject1 != NULL) set");
output(typeName);
output("Fields(env, lpObject1, &lpStruct->");
output(accessor);
outputln(");");
output("\t}");
}
outputln();
if (noWinCE) {
outputln("#endif");
}
if (exclude.length() != 0) {
outputln("#endif");
}
}
}
void generateSetFunction(JNIClass clazz) {
String clazzName = clazz.getSimpleName();
output("void set");
output(clazzName);
output("Fields(JNIEnv *env, jobject lpObject, ");
if (clazz.getFlag(Flags.FLAG_STRUCT)) {
output("struct ");
}
output(clazzName);
outputln(" *lpStruct)");
outputln("{");
output("\tif (!");
output(clazzName);
output("Fc.cached) cache");
output(clazzName);
outputln("Fields(env, lpObject);");
generateSetFields(clazz);
outputln("}");
}
void generateFunctions(JNIClass clazz) {
generateCacheFunction(clazz);
outputln();
generateGetFunction(clazz);
outputln();
generateSetFunction(clazz);
}
boolean ignoreField(JNIField field) {
int mods = field.getModifiers();
return
field.getFlag(FLAG_NO_GEN) ||
((mods & Modifier.PUBLIC) == 0) ||
((mods & Modifier.FINAL) != 0) ||
((mods & Modifier.STATIC) != 0);
}
}