diff options
Diffstat (limited to 'chapter09/src/main/java/com')
7 files changed, 37 insertions, 17 deletions
diff --git a/chapter09/src/main/java/com/seaofnodes/simple/node/AddNode.java b/chapter09/src/main/java/com/seaofnodes/simple/node/AddNode.java index 557fb451..b57b305f 100644 --- a/chapter09/src/main/java/com/seaofnodes/simple/node/AddNode.java +++ b/chapter09/src/main/java/com/seaofnodes/simple/node/AddNode.java @@ -19,12 +19,16 @@ public class AddNode extends Node { @Override public Type compute() { - if( in(1)._type instanceof TypeInteger i0 && - in(2)._type instanceof TypeInteger i1 ) { + Type t1 = in(1)._type, t2 = in(2)._type; + if( t1==Type.TOP || t1==TypeInteger.TOP || + t2==Type.TOP || t2==TypeInteger.TOP ) + return TypeInteger.TOP; + if( t1 instanceof TypeInteger i0 && + t2 instanceof TypeInteger i1 ) { if (i0.isConstant() && i1.isConstant()) return TypeInteger.constant(i0.value()+i1.value()); } - return in(1)._type.meet(in(2)._type); + return TypeInteger.BOT; } @Override diff --git a/chapter09/src/main/java/com/seaofnodes/simple/node/BoolNode.java b/chapter09/src/main/java/com/seaofnodes/simple/node/BoolNode.java index 2000e905..08ff3789 100644 --- a/chapter09/src/main/java/com/seaofnodes/simple/node/BoolNode.java +++ b/chapter09/src/main/java/com/seaofnodes/simple/node/BoolNode.java @@ -25,12 +25,16 @@ abstract public class BoolNode extends Node { @Override public Type compute() { - if( in(1)._type instanceof TypeInteger i0 && - in(2)._type instanceof TypeInteger i1 ) { + Type t1 = in(1)._type, t2 = in(2)._type; + if( t1==Type.TOP || t1==TypeInteger.TOP || + t2==Type.TOP || t2==TypeInteger.TOP ) + return TypeInteger.TOP; + if( t1 instanceof TypeInteger i0 && + t2 instanceof TypeInteger i1 ) { if (i0.isConstant() && i1.isConstant()) return TypeInteger.constant(doOp(i0.value(), i1.value()) ? 1 : 0); } - return in(1)._type.meet(in(2)._type); + return TypeInteger.BOT; } abstract boolean doOp(long lhs, long rhs); diff --git a/chapter09/src/main/java/com/seaofnodes/simple/node/DivNode.java b/chapter09/src/main/java/com/seaofnodes/simple/node/DivNode.java index d6ecfb69..6cee90ad 100644 --- a/chapter09/src/main/java/com/seaofnodes/simple/node/DivNode.java +++ b/chapter09/src/main/java/com/seaofnodes/simple/node/DivNode.java @@ -19,14 +19,18 @@ public class DivNode extends Node { @Override public Type compute() { - if (in(1)._type instanceof TypeInteger i0 && - in(2)._type instanceof TypeInteger i1) { + Type t1 = in(1)._type, t2 = in(2)._type; + if( t1==Type.TOP || t1==TypeInteger.TOP || + t2==Type.TOP || t2==TypeInteger.TOP ) + return TypeInteger.TOP; + if (t1 instanceof TypeInteger i0 && + t2 instanceof TypeInteger i1) { if (i0.isConstant() && i1.isConstant()) return i1.value() == 0 ? TypeInteger.ZERO : TypeInteger.constant(i0.value()/i1.value()); } - return in(1)._type.meet(in(2)._type); + return TypeInteger.BOT; } @Override diff --git a/chapter09/src/main/java/com/seaofnodes/simple/node/MinusNode.java b/chapter09/src/main/java/com/seaofnodes/simple/node/MinusNode.java index cb79b15b..5b055089 100644 --- a/chapter09/src/main/java/com/seaofnodes/simple/node/MinusNode.java +++ b/chapter09/src/main/java/com/seaofnodes/simple/node/MinusNode.java @@ -20,7 +20,7 @@ public class MinusNode extends Node { public Type compute() { if (in(1)._type instanceof TypeInteger i0) return i0.isConstant() ? TypeInteger.constant(-i0.value()) : i0; - return TypeInteger.TOP.meet(in(1)._type); + return in(1)._type==Type.TOP ? TypeInteger.TOP : TypeInteger.BOT; } @Override diff --git a/chapter09/src/main/java/com/seaofnodes/simple/node/MulNode.java b/chapter09/src/main/java/com/seaofnodes/simple/node/MulNode.java index 6a6c82f9..97721ce3 100644 --- a/chapter09/src/main/java/com/seaofnodes/simple/node/MulNode.java +++ b/chapter09/src/main/java/com/seaofnodes/simple/node/MulNode.java @@ -19,12 +19,16 @@ public class MulNode extends Node { @Override public Type compute() { - if (in(1)._type instanceof TypeInteger i0 && - in(2)._type instanceof TypeInteger i1) { + Type t1 = in(1)._type, t2 = in(2)._type; + if( t1==Type.TOP || t1==TypeInteger.TOP || + t2==Type.TOP || t2==TypeInteger.TOP ) + return TypeInteger.TOP; + if (t1 instanceof TypeInteger i0 && + t2 instanceof TypeInteger i1) { if (i0.isConstant() && i1.isConstant()) return TypeInteger.constant(i0.value()*i1.value()); } - return in(1)._type.meet(in(2)._type); + return TypeInteger.BOT; } @Override diff --git a/chapter09/src/main/java/com/seaofnodes/simple/node/NotNode.java b/chapter09/src/main/java/com/seaofnodes/simple/node/NotNode.java index 9fce01bd..a9a69c59 100644 --- a/chapter09/src/main/java/com/seaofnodes/simple/node/NotNode.java +++ b/chapter09/src/main/java/com/seaofnodes/simple/node/NotNode.java @@ -20,7 +20,7 @@ public class NotNode extends Node { public Type compute() { if( in(1)._type instanceof TypeInteger i0 ) return i0.isConstant() ? TypeInteger.constant(i0.value()==0 ? 1 : 0) : i0; - return TypeInteger.TOP.meet(in(1)._type); + return in(1)._type==Type.TOP ? TypeInteger.TOP : TypeInteger.BOT; } @Override diff --git a/chapter09/src/main/java/com/seaofnodes/simple/node/SubNode.java b/chapter09/src/main/java/com/seaofnodes/simple/node/SubNode.java index 20c7e1cb..59cd31f0 100644 --- a/chapter09/src/main/java/com/seaofnodes/simple/node/SubNode.java +++ b/chapter09/src/main/java/com/seaofnodes/simple/node/SubNode.java @@ -19,16 +19,20 @@ public class SubNode extends Node { @Override public Type compute() { + Type t1 = in(1)._type, t2 = in(2)._type; + if( t1==Type.TOP || t1==TypeInteger.TOP || + t2==Type.TOP || t2==TypeInteger.TOP ) + return TypeInteger.TOP; // Sub of same is 0 if( in(1)==in(2) ) return TypeInteger.ZERO; - if (in(1)._type instanceof TypeInteger i0 && - in(2)._type instanceof TypeInteger i1) { + if (t1 instanceof TypeInteger i0 && + t2 instanceof TypeInteger i1) { if (i0.isConstant() && i1.isConstant()) return TypeInteger.constant(i0.value()-i1.value()); } - return in(1)._type.meet(in(2)._type); + return TypeInteger.BOT; } @Override |