/*
* @see ASTVisitor#visit(LambdaExpression)
*/
@Override
public boolean visit(LambdaExpression node) {
boolean hasParentheses = node.hasParentheses();
if (hasParentheses) this.fBuffer.append('(');
for (Iterator<? extends VariableDeclaration> it = node.parameters().iterator();
it.hasNext(); ) {
VariableDeclaration v = it.next();
v.accept(this);
if (it.hasNext()) {
this.fBuffer.append(","); // $NON-NLS-1$
}
}
if (hasParentheses) this.fBuffer.append(')');
this.fBuffer.append(" -> "); // $NON-NLS-1$
node.getBody().accept(this);
return false;
}
@Override
public Function<Object[], ?> visit(LambdaExpression<?> e) {
final Function<Object[], ?> f = e.getBody().accept(this);
int size = e.getParameters().size();
List<Function<Object[], ?>> ppe = new ArrayList<>(size);
for (ParameterExpression p : e.getParameters()) ppe.add(p.accept(this));
Function<Object[], Object[]> params =
pp -> {
Object[] r = new Object[ppe.size()];
int index = 0;
for (Function<Object[], ?> pe : ppe) {
r[index++] = pe.apply(pp);
}
return r;
};
return f.compose(params);
}
public void toString(StringBuffer bld, Variable rootVariable) {
int top = assignments.length;
if (top > 0) {
for (int idx = 0; idx < top; ++idx) {
appendOperand(bld, rootVariable, assignments[idx].rhs, IExpressionConstants.PRIORITY_COMMA);
bld.append(", "); // $NON-NLS-1$
}
bld.append(OPERATOR_EACH);
bld.append(", {"); // $NON-NLS-1$
for (int idx = 0; idx < top; ++idx) {
appendOperand(bld, rootVariable, assignments[idx].lhs, IExpressionConstants.PRIORITY_COMMA);
bld.append(", "); // $NON-NLS-1$
}
}
super.toString(bld, rootVariable);
if (top > 0) bld.append('}');
}