зеркало из https://github.com/mozilla/gecko-dev.git
234 строки
6.6 KiB
C++
234 строки
6.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "NetscapeHeaderGenerator.h"
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#include "prprf.h"
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#include "plstr.h"
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#include "CUtils.h"
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#include "StringUtils.h"
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#include "JavaObject.h"
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#include "FieldOrMethod.h"
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#include "NetscapeManglers.h"
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#ifdef USE_PR_IO
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#define PR_fprintf fprintf
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#define PR_Write fwrite
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#define PRFileDesc FILE
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#endif
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bool NetscapeHeaderGenerator::genHeaderFile(ClassFileSummary &summ,
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PRFileDesc *fp)
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{
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const ClassFileReader &reader = *summ.getReader();
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const char *className = reader.getThisClass()->getUtf()->getUtfString();
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PR_fprintf(fp, "/* This file is machine-generated. Do not edit!! */\n");
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PR_fprintf(fp, "\n/* Header for class %s */\n\n", className);
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PR_fprintf(fp, "#include \"prtypes.h\"\n");
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PR_fprintf(fp, "#include \"NativeDefs.h\"\n");
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/* If we have a parent, put in a #include so that we can access the
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* parent's struct as well
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*/
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const char *constParentName = getParentName(reader);
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char *parentCName = 0;
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if (constParentName) {
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TemporaryStringCopy pcopy(constParentName);
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char *parentName = pcopy;
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int32 parentLen = PL_strlen(parentName)+sizeof("Java_")+1;
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parentCName = (char *) malloc(parentLen+1);
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PL_strcpy(parentCName, mangleClassName(parentName, '/'));
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PR_fprintf(fp, "#include \"%s.h\"\n", parentCName);
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}
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PR_fprintf(fp, "\n\n");
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/* Generate forward declarations */
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Pool p;
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StringPool sp(p);
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genForwards(summ, sp);
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/* Now get all the keys in the string pool */
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Vector<char *> &vec = sp;
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for (uint32 index = 0; index < vec.size(); index++)
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PR_fprintf(fp, "struct %s;\n", vec[index]);
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PR_fprintf(fp, "\n\n");
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TemporaryStringCopy copy(className);
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char *mangledClassName = mangleClassName((char *) copy, '/');
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if (parentCName) {
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PR_fprintf(fp, "struct Java_%s : Java_%s {\n", mangledClassName,
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parentCName);
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PR_fprintf(fp, "\tJava_%s(const Type &type) : Java_%s(type) { }\n",
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mangledClassName, parentCName);
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free(parentCName);
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} else {
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PR_fprintf(fp, "struct Java_%s : JavaObject {\n", mangledClassName);
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PR_fprintf(fp, "\tJava_%s(const Type &type) : JavaObject(type) { }\n",
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mangledClassName);
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}
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/* Go through each field and generate it's type */
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const Field **fields = summ.getFields();
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uint32 fieldCount = summ.getFieldCount();
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uint32 i;
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for (i = 0; i < fieldCount; i++) {
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const char *fieldName = fields[i]->getName();
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const Type &type = fields[i]->getType();
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const char *typeStr = getArgString(type);
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if (!typeStr)
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return false;
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if (fields[i]->getModifiers() & CR_FIELD_STATIC)
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PR_fprintf(fp, "\t// static %s %s; \n", typeStr, fieldName);
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else
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PR_fprintf(fp, "\t%s %s;\n", typeStr, fieldName);
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// Currently kills the release build since NSPR needs to give us a
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// clean way of freeing strings that it allocates
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#ifdef DEBUG
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//free((void *) typeStr); /* getArgString() uses malloc to allocate */
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#endif
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}
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PR_fprintf(fp, "};\n\n");
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/* Generate a declaration for the array type corresponding to this class */
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PR_fprintf(fp, "ARRAY_OF(Java_%s);\n", mangledClassName);
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const Method **methods = summ.getMethods();
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uint32 methodCount = summ.getMethodCount();
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/* Now go through each method and see if it is overloaded. */
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TemporaryBuffer overbuf(methodCount*sizeof(bool));
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bool *overloadedMethods = (bool *) (char *) overbuf;
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for (i = 0; i < methodCount; i++) {
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const char *methodName = methods[i]->getName();
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overloadedMethods[i] = false;
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for (int j = 0; j < methodCount; ++j)
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if (i != j && strcmp(methodName, methods[j]->getName()) == 0)
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overloadedMethods[i] = true;
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}
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/* Now go through each native method and generate a declaration for it */
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NetscapeShortMangler smangler;
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NetscapeLongMangler lmangler;
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/* extern "C" the generated method headers */
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PR_fprintf(fp, "extern \"C\" {\n");
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for (i = 0; i < methodCount; i++) {
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Method *m = (Method *) methods[i];
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const Signature &sig = m->getSignature();
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if ((m->getModifiers() & CR_METHOD_NATIVE)) {
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/* Generate the return type */
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char *retString = getArgString(*sig.resultType);
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const char *methodName = m->getName();
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const char *signature = const_cast<Method *>(m)->getSignatureString();
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if (!retString)
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return false;
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int32 len = PL_strlen(methodName) + PL_strlen(className)*2 +
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PL_strlen(signature)*2 + sizeof("Netscape_Java___");
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TemporaryBuffer copy(len);
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char *mangledMethodName = copy;
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if (overloadedMethods[i]) {
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if (!lmangler.mangle(className, methodName, signature,
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mangledMethodName, len))
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continue;
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}
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else {
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if (!smangler.mangle(className, methodName, signature,
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mangledMethodName, len))
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continue;
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}
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PR_fprintf(fp, "\n/*\n");
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PR_fprintf(fp, " * Class : %s\n", className);
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PR_fprintf(fp, " * Method : %s\n", methodName);
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PR_fprintf(fp, " * Signature : %s\n", signature);
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PR_fprintf(fp, " */\n");
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PR_fprintf(fp, "NS_EXPORT NS_NATIVECALL(%s)\n%s(",
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retString, mangledMethodName);
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// Kills the release build since NSPR needs to give us a clean way to
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// free strings that it allocates
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#ifdef DEBUG
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//free(retString);
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#endif
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for (uint32 j = 0; j < sig.nArguments; j++) {
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char *typeString = getArgString(*sig.argumentTypes[j]);
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if (!typeString)
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return false;
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if (j == 0)
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PR_fprintf(fp, "%s", typeString);
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else
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PR_fprintf(fp, ", %s", typeString);
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// Currently does not work with the release build since NSPR needs to
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// give us a clean way of freeing strings that it allocates
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#ifdef DEBUG
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//free(typeString);
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#endif
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}
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PR_fprintf(fp, ");\n\n");
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}
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}
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/* Matches the extern "C" declaration generated earlier */
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PR_fprintf(fp, "}\n");
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return true;
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}
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