@Override
public boolean visit(TernaryExpression t) {
TreeNode tp = t.getThenPart();
TreeNode ep = t.getElsePart();
t.setExpressionType(lub(t, tp.getExpressionType(), ep.getExpressionType()));
return true;
}
private boolean match(ArgumentList al, MethodInformation mi) {
Type[] arguments = mi.getArguments();
if ((al == null || al.size() == 0) && arguments.length == 0) return true;
if (al.size() != arguments.length) return false;
int i = 0;
for (TreeNode tn : al.get()) {
ExpressionType et = tn.getExpressionType();
if (!et.match(arguments[i++])) return false;
}
return true;
}
private void testSuccessfulParse(String s, TreeNode tn) {
SyntaxTree t = TestParseHelper.earleyParseBuildTree(g, s, null, diagnostics);
assert !diagnostics.hasError()
: "Got parser errors: " + TestParseHelper.getParseOutput(diagnostics);
if (tn != null)
assert tn.equals(t.getRoot()) : "Got unexpected tree: " + t.getRoot() + ", expected: " + tn;
}
private boolean hasMethods(ExpressionType clzType, TreeNode m) {
if (clzType.isPrimitiveType()) {
diagnostics.report(
SourceDiagnostics.error(
tree.getOrigin(), m.getParsePosition(), "Primitives have no methods"));
return false;
} else if (clzType == ExpressionType.VOID) {
diagnostics.report(
SourceDiagnostics.error(tree.getOrigin(), m.getParsePosition(), "Void has no methods"));
return false;
} else if (clzType == ExpressionType.NULL) {
diagnostics.report(
SourceDiagnostics.error(tree.getOrigin(), m.getParsePosition(), "null has no methods"));
return false;
}
return true;
}
private ExpressionType getOnType(TreeNode on) {
if (on != null) {
return on.getExpressionType();
} else {
String fqn = cip.getFullName(containingClasses.getLast());
return new ExpressionType(fqn);
}
}
private ExpressionType lub(TreeNode tn, ExpressionType et1, ExpressionType et2) {
if (et1.isPrimitiveType()) {
if (!et2.isPrimitiveType()) {
diagnostics.report(
SourceDiagnostics.error(
tree.getOrigin(),
tn.getParsePosition(),
"Unable to find common parent type of %s and %s",
et1,
et2));
return null;
}
return ExpressionType.bigger(et1, et2);
}
return et1;
}