org.walkmod.javalang.compiler.actions.LoadMethodDeclarationsAction Maven / Gradle / Ivy
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Library of compiler components to processs Java code.
/*
* Copyright (C) 2015 Raquel Pau and Albert Coroleu.
*
* Walkmod is free software: you can redistribute it and/or modify it under the terms of the GNU
* Lesser General Public License as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* Walkmod is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even
* the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with Walkmod. If
* not, see params = md.getParameters();
List tps = md.getTypeParameters();
SymbolType[] args = null;
boolean hasDynamicArgs = false;
if (params != null) {
args = new SymbolType[params.size()];
for (int i = 0; i < args.length; i++) {
Parameter currentParam = params.get(i);
args[i] = ASTSymbolTypeResolver.getInstance().valueOf(currentParam.getType(), tps);
int arrayCount = currentParam.getId().getArrayCount();
if (arrayCount > 0) {
args[i].setArrayCount(args[i].getArrayCount() + arrayCount);
}
params.get(i).getType().setSymbolData(args[i]);
if (i == args.length - 1) {
hasDynamicArgs = params.get(i).isVarArgs();
if (hasDynamicArgs) {
args[i] = args[i].clone();
args[i].setArrayCount(args[i].getArrayCount() + 1);
}
}
}
}
List actions = null;
if (actionProvider != null) {
actions = actionProvider.getActions(md);
}
MethodSymbol method = new MethodSymbol(md.getName(), resolvedType, md, st, args, false, hasDynamicArgs,
(Method) null, actions);
sc.setRootSymbol(method);
method.setInnerScope(sc);
md.accept(expressionTypeAnalyzer, null);
table.popScope(true);
MethodSymbolData msd = md.getSymbolData();
if (msd == null) {
throw new RuntimeException("Ops! The following method can't be solved: " + md.toString());
}
method.setReferencedMethod(msd.getMethod());
table.pushSymbol(method, true);
}
private void pushConstructor(SymbolType st, SymbolTable table, ConstructorDeclaration md) throws Exception {
Type type = new ClassOrInterfaceType(md.getName());
SymbolType resolvedType = ASTSymbolTypeResolver.getInstance().valueOf(type);
type.setSymbolData(resolvedType);
List params = md.getParameters();
List tps = md.getTypeParameters();
SymbolType[] args = null;
boolean hasDynamicArgs = false;
if (params != null) {
args = new SymbolType[params.size()];
for (int i = 0; i < args.length; i++) {
args[i] = ASTSymbolTypeResolver.getInstance().valueOf(params.get(i).getType(), tps);
params.get(i).getType().setSymbolData(args[i]);
if (i == args.length - 1) {
hasDynamicArgs = params.get(i).isVarArgs();
}
}
}
List actions = null;
if (actionProvider != null) {
actions = actionProvider.getActions(md);
}
MethodSymbol method = new MethodSymbol(md.getName(), resolvedType, md, st, args, false, hasDynamicArgs,
(java.lang.reflect.Constructor) null, actions);
Scope scope = new Scope(method);
method.setInnerScope(scope);
table.pushScope(scope);
md.accept(expressionTypeAnalyzer, null);
table.popScope(true);
method.setReferencedConstructor(md.getSymbolData().getConstructor());
table.pushSymbol(method);
}
@Override
public void doPush(Symbol symbol, SymbolTable table) throws Exception {
if (symbol.getName().equals("this")) {
Node node = symbol.getLocation();
MethodsPopulator populator = new MethodsPopulator(table);
node.accept(populator, table.getScopes().peek());
}
}
private class MethodsPopulator extends VoidVisitorAdapter {
private SymbolTable table;
public MethodsPopulator(SymbolTable table) {
this.table = table;
}
@Override
public void visit(ObjectCreationExpr o, Scope scope) {
if (!scope.hasMethodsLoaded()) {
table.pushScope(scope);
List types = new LinkedList();
types.add(o.getType());
loadExtendsOrImplements(types);
loadMethods(o.getAnonymousClassBody(), scope);
table.popScope(true);
}
}
@Override
public void visit(EnumConstantDeclaration o, Scope scope) {
if (!scope.hasMethodsLoaded()) {
table.pushScope(scope);
loadMethods(o.getClassBody(), scope);
table.popScope(true);
}
}
@Override
public void visit(ClassOrInterfaceDeclaration n, Scope scope) {
if (!scope.hasMethodsLoaded()) {
table.pushScope(scope);
loadExtendsOrImplements(n.getExtends());
loadMethods(n.getMembers(), scope);
if (!n.isInterface()) {
loadExtendsOrImplements(n.getImplements());
}
table.popScope(true);
}
}
private void loadMethods(List members, Scope scope) {
if (!scope.hasMethodsLoaded() && members != null) {
try {
for (BodyDeclaration member : members) {
if (member instanceof ConstructorDeclaration) {
ConstructorDeclaration cd = (ConstructorDeclaration) member;
pushConstructor((SymbolType) ((SymbolDataAware) member.getParentNode()).getSymbolData(),
table, cd);
}
if (member instanceof MethodDeclaration) {
MethodDeclaration md = (MethodDeclaration) member;
pushMethod((SymbolType) ((SymbolDataAware) member.getParentNode()).getSymbolData(),
table, md);
}
}
} catch (Exception e) {
throw new RuntimeException("Error loading methods in a given scope", e);
}
scope.setHasMethodsLoaded(true);
}
}
@Override
public void visit(EnumDeclaration n, Scope scope) {
table.pushScope(scope);
loadMethods(n.getMembers(), scope);
table.popScope(true);
}
@Override
public void visit(AnnotationDeclaration n, Scope scope) {
table.pushScope(scope);
loadMethods(n.getMembers(), scope);
table.popScope(true);
}
class NameBuilder extends GenericVisitorAdapter {
public String visit(ClassOrInterfaceType n, Object arg) {
String result = "";
ClassOrInterfaceType scope = n.getScope();
if (scope != null) {
result = scope.accept(this, arg) + ".";
}
return result + n.getName();
}
}
private NameBuilder nameBuilder = new NameBuilder();
private void loadMethods(Collection methods, List params, SymbolType st) {
for (Method method : methods) {
Map parameterTypes = null;
try {
java.lang.reflect.Type[] genericParameterTypes = method.getGenericParameterTypes();
SymbolType[] methodArgs = new SymbolType[genericParameterTypes.length];
if (params != null) {
parameterTypes = new HashMap();
TypeVariable[] typeParams = method.getDeclaringClass().getTypeParameters();
for (int i = 0; i < params.size() && i < typeParams.length; i++) {
SymbolType.valueOf(typeParams[i], params.get(i), parameterTypes, null);
}
}
for (int i = 0; i < genericParameterTypes.length; i++) {
methodArgs[i] = SymbolType.valueOf(genericParameterTypes[i], parameterTypes);
}
SymbolType returnType = SymbolType.valueOf(method, parameterTypes);
MethodSymbol methodSymbol = new MethodSymbol(method.getName(), returnType, null, st, methodArgs,
false, method.isVarArgs(), method, null);
table.pushSymbol(methodSymbol);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
public void loadExtendsOrImplements(List extendsList) {
if (extendsList != null) {
for (ClassOrInterfaceType type : extendsList) {
String name = type.accept(nameBuilder, null);
Symbol s = table.findSymbol(name, ReferenceType.TYPE);
if (s == null) {
SymbolType st = ASTSymbolTypeResolver.getInstance().valueOf(type);
if (st == null || st.getClazz() == null) {
throw new RuntimeException("Error resolving " + name);
}
name = st.getClazz().getCanonicalName();
s = table.findSymbol(name, ReferenceType.TYPE);
}
if (s != null) {
Object location = s.getLocation();
boolean isInterfaceImplementation = false;
if (location != null && location instanceof TypeDeclaration) {
if (s.getType().getClazz().isInterface()) {
Node parent = type.getParentNode();
if (parent != null) {
if (parent instanceof ClassOrInterfaceDeclaration) {
ClassOrInterfaceDeclaration decl = (ClassOrInterfaceDeclaration) parent;
isInterfaceImplementation = !decl.isInterface();
}
}
}
if (!isInterfaceImplementation) {
TypeDeclaration superClass = ((TypeDeclaration) location);
superClass.accept(this, s.getInnerScope());
} else {
// we need to load in the same scope the
// "default" methods
SymbolType typeArg = ASTSymbolTypeResolver.getInstance().valueOf(type);
Node parent = type.getParentNode();
if (parent instanceof SymbolDataAware) {
SymbolDataAware ctxt = (SymbolDataAware) parent;
Set methods = MethodInspector.getInhertitedDefaultMethods(
typeArg.getClazz(), ctxt.getSymbolData().getClazz());
if (!methods.isEmpty()) {
Scope aux = s.getInnerScope();
TypeDeclaration superClass = ((TypeDeclaration) location);
superClass.accept(this, aux);
Iterator it = methods.iterator();
while (it.hasNext()) {
Method current = it.next();
Symbol sType = table.findSymbol(
current.getDeclaringClass().getCanonicalName(), ReferenceType.TYPE);
if (sType != null) {
aux = sType.getInnerScope();
if (aux != null) {
Class[] argClasses = current.getParameterTypes();
SymbolType[] args = new SymbolType[argClasses.length];
for (int i = 0; i < args.length; i++) {
args[i] = new SymbolType(argClasses[i]);
}
Symbol sym = aux.findSymbol(current.getName(), null, args, null,
ReferenceType.METHOD);
if (sym != null) {
sym.getType().setMethod(current);
table.pushSymbol(sym);
}
}
}
}
}
}
}
} else {
Class clazz = s.getType().getClazz();
Set methods = null;
if (!isInterfaceImplementation) {
methods = MethodInspector.getInheritedMethods(clazz);
Symbol parent = table.findSymbol("super", ReferenceType.VARIABLE);
if (parent == null) {
parent = table.pushSymbol("super", ReferenceType.TYPE, new SymbolType(clazz), null);
}
Scope parentScope = parent.getInnerScope();
if (parentScope == null) {
parentScope = new Scope(parent);
parent.setInnerScope(parentScope);
}
SymbolType typeArg = ASTSymbolTypeResolver.getInstance().valueOf(type);
List params = typeArg.getParameterizedTypes();
table.pushScope(parentScope);
loadMethods(methods, params, s.getType());
table.popScope(true);
} else {
SymbolType typeArg = ASTSymbolTypeResolver.getInstance().valueOf(type);
List params = typeArg.getParameterizedTypes();
methods = MethodInspector.getInhertitedDefaultMethods(typeArg.getClazz(), clazz);
loadMethods(methods, params, s.getType());
}
}
}
}
}
}
}
}
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