soot.dava.toolkits.base.AST.ASTWalker Maven / Gradle / Ivy
package soot.dava.toolkits.base.AST;
/*-
* #%L
* Soot - a J*va Optimization Framework
* %%
* Copyright (C) 2003 Jerome Miecznikowski
* %%
* This program 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 2.1 of the
* License, or (at your option) any later version.
*
* This program 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 General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
import soot.G;
import soot.Singletons;
import soot.Value;
import soot.jimple.ArrayRef;
import soot.jimple.BinopExpr;
import soot.jimple.CastExpr;
import soot.jimple.DefinitionStmt;
import soot.jimple.Expr;
import soot.jimple.InstanceFieldRef;
import soot.jimple.InstanceInvokeExpr;
import soot.jimple.InstanceOfExpr;
import soot.jimple.InvokeExpr;
import soot.jimple.InvokeStmt;
import soot.jimple.NewArrayExpr;
import soot.jimple.NewMultiArrayExpr;
import soot.jimple.Ref;
import soot.jimple.ReturnStmt;
import soot.jimple.Stmt;
import soot.jimple.ThrowStmt;
import soot.jimple.UnopExpr;
public class ASTWalker {
public ASTWalker(Singletons.Global g) {
}
public static ASTWalker v() {
return G.v().soot_dava_toolkits_base_AST_ASTWalker();
}
public void walk_stmt(ASTAnalysis a, Stmt s) {
if (a.getAnalysisDepth() < ASTAnalysis.ANALYSE_STMTS) {
return;
}
if (s instanceof DefinitionStmt) {
DefinitionStmt ds = (DefinitionStmt) s;
walk_value(a, ds.getRightOp());
walk_value(a, ds.getLeftOp());
a.analyseDefinitionStmt(ds);
} else if (s instanceof ReturnStmt) {
ReturnStmt rs = (ReturnStmt) s;
walk_value(a, rs.getOp());
a.analyseReturnStmt(rs);
} else if (s instanceof InvokeStmt) {
InvokeStmt is = (InvokeStmt) s;
walk_value(a, is.getInvokeExpr());
a.analyseInvokeStmt(is);
} else if (s instanceof ThrowStmt) {
ThrowStmt ts = (ThrowStmt) s;
walk_value(a, ts.getOp());
a.analyseThrowStmt(ts);
} else {
a.analyseStmt(s);
}
}
public void walk_value(ASTAnalysis a, Value v) {
if (a.getAnalysisDepth() < ASTAnalysis.ANALYSE_VALUES) {
return;
}
if (v instanceof Expr) {
Expr e = (Expr) v;
if (e instanceof BinopExpr) {
BinopExpr be = (BinopExpr) e;
walk_value(a, be.getOp1());
walk_value(a, be.getOp2());
a.analyseBinopExpr(be);
} else if (e instanceof UnopExpr) {
UnopExpr ue = (UnopExpr) e;
walk_value(a, ue.getOp());
a.analyseUnopExpr(ue);
} else if (e instanceof CastExpr) {
CastExpr ce = (CastExpr) e;
walk_value(a, ce.getOp());
a.analyseExpr(ce);
} else if (e instanceof NewArrayExpr) {
NewArrayExpr nae = (NewArrayExpr) e;
walk_value(a, nae.getSize());
a.analyseNewArrayExpr(nae);
} else if (e instanceof NewMultiArrayExpr) {
NewMultiArrayExpr nmae = (NewMultiArrayExpr) e;
for (int i = 0; i < nmae.getSizeCount(); i++) {
walk_value(a, nmae.getSize(i));
}
a.analyseNewMultiArrayExpr(nmae);
} else if (e instanceof InstanceOfExpr) {
InstanceOfExpr ioe = (InstanceOfExpr) e;
walk_value(a, ioe.getOp());
a.analyseInstanceOfExpr(ioe);
} else if (e instanceof InvokeExpr) {
InvokeExpr ie = (InvokeExpr) e;
for (int i = 0; i < ie.getArgCount(); i++) {
walk_value(a, ie.getArg(i));
}
if (ie instanceof InstanceInvokeExpr) {
InstanceInvokeExpr iie = (InstanceInvokeExpr) ie;
walk_value(a, iie.getBase());
a.analyseInstanceInvokeExpr(iie);
} else {
a.analyseInvokeExpr(ie);
}
} else {
a.analyseExpr(e);
}
} else if (v instanceof Ref) {
Ref r = (Ref) v;
if (r instanceof ArrayRef) {
ArrayRef ar = (ArrayRef) r;
walk_value(a, ar.getBase());
walk_value(a, ar.getIndex());
a.analyseArrayRef(ar);
} else if (r instanceof InstanceFieldRef) {
InstanceFieldRef ifr = (InstanceFieldRef) r;
walk_value(a, ifr.getBase());
a.analyseInstanceFieldRef(ifr);
} else {
a.analyseRef(r);
}
} else {
a.analyseValue(v);
}
}
}