@Override
public Object visitFunction(Function fcn) {
if (fcn.isSketchHarness()
|| fcn.getSpecification() != null
|| specFcns.contains(fcn.getName())
|| !fcn.isStatic()) {
return fcn;
} else {
this.parametersToInout = new TypedHashSet<String>();
this.inputParameters = new Vector<String>();
for (Parameter param : fcn.getParams()) {
if (!param.isParameterOutput()) {
this.inputParameters.add(param.getName());
}
}
super.visitFunction(fcn);
if (parametersToInout.isEmpty()) {
return fcn;
} else {
Vector<Parameter> newParams = new Vector<Parameter>();
for (Parameter param : fcn.getParams()) {
if (parametersToInout.contains(param.getName())) {
newParams.add(new Parameter(param, param.getType(), param.getName(), Parameter.REF));
} else {
newParams.add(param);
}
}
return fcn.creator().params(newParams).create();
}
}
}
private Function addAssumes(Function f) {
Map<Expression, Expression> lenVars = new HashMap<Expression, Expression>();
List<Statement> stmts = new ArrayList<Statement>();
for (Parameter p : f.getParams()) {
Type t = p.getType();
if (t.isArray()) {
TypeArray ta = (TypeArray) t;
Type tb = ta.getBase();
if (!tb.isArray()) {
Expression len = ta.getLength();
if (!len.isConstant()) {
Expression v = lenVars.get(len);
if (v == null) {
String vname = varGen.nextVar("valen_" + p.getName());
v = new ExprVar(p, vname);
lenVars.put(len, v);
stmts.add(new StmtVarDecl(p, TypePrimitive.inttype, vname, len));
}
Expression zero = tb.defaultValue();
Expression arr = new ExprVar(p, p.getName());
for (int j = 0; j < arrSize; ++j) {
Expression jexp = constInts.get(j);
Expression cond1 = new ExprBinary(p, ExprBinary.BINOP_GT, v, jexp);
Expression cond2 =
new ExprBinary(p, ExprBinary.BINOP_EQ, zero, new ExprArrayRange(arr, jexp));
stmts.add(
new StmtAssume(
p,
new ExprBinary(p, ExprBinary.BINOP_OR, cond1, cond2),
"trunc " + p.getName() + " " + j));
}
}
}
}
}
if (stmts.isEmpty()) {
return f;
} else {
stmts.addAll(((StmtBlock) f.getBody()).getStmts());
return f.creator().body(new StmtBlock(stmts)).create();
}
}