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package lombok.javac.handlers;
import java.lang.reflect.Modifier;
import com.sun.tools.javac.code.Flags;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.tree.TreeMaker;
import com.sun.tools.javac.tree.JCTree.JCClassDecl;
import com.sun.tools.javac.tree.JCTree.JCExpression;
import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
import com.sun.tools.javac.util.List;
import lombok.AccessLevel;
import lombok.core.TransformationsUtil;
import lombok.core.AST.Kind;
import lombok.javac.JavacAST;
class PKG {
private PKG() {}
static String toGetterName(JCVariableDecl field) {
CharSequence fieldName = field.name;
boolean isBoolean = field.vartype.toString().equals("boolean");
return TransformationsUtil.toGetterName(fieldName, isBoolean);
}
static String toSetterName(JCVariableDecl field) {
CharSequence fieldName = field.name;
return TransformationsUtil.toSetterName(fieldName);
}
enum MemberExistsResult {
NOT_EXISTS, EXISTS_BY_USER, EXISTS_BY_LOMBOK;
}
static MemberExistsResult fieldExists(String fieldName, JavacAST.Node node) {
while ( node != null && !(node.get() instanceof JCClassDecl) ) {
node = node.up();
}
if ( node != null && node.get() instanceof JCClassDecl ) {
for ( JCTree def : ((JCClassDecl)node.get()).defs ) {
if ( def instanceof JCVariableDecl ) {
if ( ((JCVariableDecl)def).name.contentEquals(fieldName) ) {
JavacAST.Node existing = node.getNodeFor(def);
if ( existing == null || !existing.isHandled() ) return MemberExistsResult.EXISTS_BY_USER;
return MemberExistsResult.EXISTS_BY_LOMBOK;
}
}
}
}
return MemberExistsResult.NOT_EXISTS;
}
static MemberExistsResult methodExists(String methodName, JavacAST.Node node) {
while ( node != null && !(node.get() instanceof JCClassDecl) ) {
node = node.up();
}
if ( node != null && node.get() instanceof JCClassDecl ) {
for ( JCTree def : ((JCClassDecl)node.get()).defs ) {
if ( def instanceof JCMethodDecl ) {
if ( ((JCMethodDecl)def).name.contentEquals(methodName) ) {
JavacAST.Node existing = node.getNodeFor(def);
if ( existing == null || !existing.isHandled() ) return MemberExistsResult.EXISTS_BY_USER;
return MemberExistsResult.EXISTS_BY_LOMBOK;
}
}
}
}
return MemberExistsResult.NOT_EXISTS;
}
static MemberExistsResult constructorExists(JavacAST.Node node) {
while ( node != null && !(node.get() instanceof JCClassDecl) ) {
node = node.up();
}
if ( node != null && node.get() instanceof JCClassDecl ) {
for ( JCTree def : ((JCClassDecl)node.get()).defs ) {
if ( def instanceof JCMethodDecl ) {
if ( ((JCMethodDecl)def).name.contentEquals("<init>") ) {
if ( (((JCMethodDecl)def).mods.flags & Flags.GENERATEDCONSTR) != 0 ) continue;
JavacAST.Node existing = node.getNodeFor(def);
if ( existing == null || !existing.isHandled() ) return MemberExistsResult.EXISTS_BY_USER;
return MemberExistsResult.EXISTS_BY_LOMBOK;
}
}
}
}
return MemberExistsResult.NOT_EXISTS;
}
static int toJavacModifier(AccessLevel accessLevel) {
switch ( accessLevel ) {
case MODULE:
case PACKAGE:
return 0;
default:
case PUBLIC:
return Modifier.PUBLIC;
case PRIVATE:
return Modifier.PRIVATE;
case PROTECTED:
return Modifier.PROTECTED;
}
}
static void injectField(JavacAST.Node typeNode, JCVariableDecl field) {
JCClassDecl type = (JCClassDecl) typeNode.get();
type.defs = type.defs.append(field);
typeNode.add(field, Kind.FIELD).recursiveSetHandled();
}
static void injectMethod(JavacAST.Node typeNode, JCMethodDecl method) {
JCClassDecl type = (JCClassDecl) typeNode.get();
if ( method.getName().contentEquals("<init>") ) {
//Scan for default constructor, and remove it.
int idx = 0;
for ( JCTree def : type.defs ) {
if ( def instanceof JCMethodDecl ) {
if ( (((JCMethodDecl)def).mods.flags & Flags.GENERATEDCONSTR) != 0 ) {
JavacAST.Node tossMe = typeNode.getNodeFor(def);
if ( tossMe != null ) tossMe.up().removeChild(tossMe);
type.defs = addAllButOne(type.defs, idx);
break;
}
}
idx++;
}
}
type.defs = type.defs.append(method);
typeNode.add(method, Kind.METHOD).recursiveSetHandled();
}
private static List<JCTree> addAllButOne(List<JCTree> defs, int idx) {
List<JCTree> out = List.nil();
int i = 0;
for ( JCTree def : defs ) {
if ( i++ != idx ) out = out.append(def);
}
return out;
}
static JCExpression chainDots(TreeMaker maker, JavacAST.Node node, String... elems) {
assert elems != null;
assert elems.length > 0;
JCExpression e = maker.Ident(node.toName(elems[0]));
for ( int i = 1 ; i < elems.length ; i++ ) {
e = maker.Select(e, node.toName(elems[i]));
}
return e;
}
}
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