diff options
Diffstat (limited to 'sca-cpp/tags/native-sca-1.0.incubating-M3/tools/scagen/src/org/apache/tuscany/sca/cpp/tools/common/MethodPart.java')
| -rw-r--r-- | sca-cpp/tags/native-sca-1.0.incubating-M3/tools/scagen/src/org/apache/tuscany/sca/cpp/tools/common/MethodPart.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/sca-cpp/tags/native-sca-1.0.incubating-M3/tools/scagen/src/org/apache/tuscany/sca/cpp/tools/common/MethodPart.java b/sca-cpp/tags/native-sca-1.0.incubating-M3/tools/scagen/src/org/apache/tuscany/sca/cpp/tools/common/MethodPart.java new file mode 100644 index 0000000000..a25610c1f9 --- /dev/null +++ b/sca-cpp/tags/native-sca-1.0.incubating-M3/tools/scagen/src/org/apache/tuscany/sca/cpp/tools/common/MethodPart.java @@ -0,0 +1,133 @@ +/** + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +/* @version $Rev$ $Date$ */ + +/* + * Branched from the original class that was also contributed to the + * org.apache.axis.tools.common package. + */ +package org.apache.tuscany.sca.cpp.tools.common; + +import java.util.ArrayList; + +/** + * A C or C++ method from a piece of source code. The method has a signature and + * a body (the bit between the braces). + */ +public class MethodPart extends FilePart { + private Signature signature; + + private String body; + + MethodPart(String s, Signature signature, String body) { + super(s, METHOD); + this.signature = signature; + this.body = body; + } + + public Signature getSignature() { + return signature; + } + + public String getOriginalSignature() { + return signature.getOriginal(); + } + + /** + * Returns the method body as code snippets, each ending with a place where + * a trace statement belongs. The end of the first code snippet is where the + * entry trace should go. The end of every other snippet is a return from + * the method. + */ + public BodyPart[] getBodyParts() throws ParsingException { + String b = body; // Don't alter field member + if (b.startsWith("{")) + b = b.substring(1); + + // Add in trace exit at all the return statements in the method. + ArrayList al = new ArrayList(); + int idxR = Utils.indexOf(b, "return"); + int idxC = Utils.indexOf(b, "catch"); + while (-1 != idxR || -1 != idxC) { + if (-1 == idxC || (-1 != idxR && idxR < idxC)) { + String frag = b.substring(0, idxR); + String rest = b.substring(idxR + "return".length()); + + int semicolon = Utils.indexOf(rest, ';'); + if (-1 == semicolon) + Utils.rude("Missing semicolon in " + signature); + String retVal = rest.substring(0, semicolon); + BodyPart bp = new BodyPart(frag, retVal); + al.add(bp); + b = b.substring(idxR + "return".length() + retVal.length() + 1); + } else { + String frag = b.substring(0, idxC); + String rest = b.substring(idxC); + + int brace = Utils.indexOf(rest, "{"); + if (-1 == brace) + Utils.rude("Missing open brace in " + signature); + Signature signature = new Signature(rest.substring(0, brace)); + frag = frag + rest.substring(0, brace + 1); + BodyPart bp = new BodyPart(frag, signature.getParameters()[0]); + al.add(bp); + b = rest.substring(brace + 1); + } + idxR = Utils.indexOf(b, "return"); + idxC = Utils.indexOf(b, "catch"); + } + + // Add in trace exit before the last } if there are no returns in + // the method or there is code after the last return and the method + // returns void. + // int f1(){try{return f2();}catch(Exception& e){throw;}} + // has code after the last return but having a traceexit before the + // last brace wouldn't compile since the method returns an int. We + // cope with this by only adding in a traceexit before the last brace + // if the method returns void. That may mean we add in an unreachable + // traceexit which may give a compiler warning, but that should be + // benign. + // + // TODO: Not quite good enough for + // void f(int a){if(a){printf("a");}else{printf("!a");return;}} + // as a trace exit is needed before the last } in case a>0 but + // void f(int a){if(a){printf("a");return;}else{printf("!a");return;}} + // would give compiler warnings about unreachable code if a trace + // exit is added before the last brace. This could be tricky to fix. + if ((0 == al.size() || -1 != Utils.indexOf(b, ';')) + && null == signature.getReturnType().getType()) { + + int last = b.lastIndexOf('}'); + if (-1 == last) + Utils.rude("Missing end brace in " + signature); + String b2 = b.substring(0, last); + al.add(new BodyPart(b2)); + b = b.substring(last); + } + + // The final body part is the last } + al.add(new BodyPart(b)); + + BodyPart[] bps = new BodyPart[al.size()]; + System.arraycopy(al.toArray(), 0, bps, 0, al.size()); + return bps; + } +}
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