@Override
public boolean visit(ClassInstanceCreationExpression c) {
ExpressionType clzType;
if (c.hasBody()) {
clzType = new ExpressionType(cip.getFullName(c.getBody()));
} else {
clzType = c.getId().getExpressionType();
}
if (hasMethods(clzType, c)) {
String fqn = clzType.getClassName();
ArgumentList al = c.getArgumentList();
try {
MethodInformation mi = findMatchingConstructor(fqn, al);
if (mi == null) {
diagnostics.report(
SourceDiagnostics.error(
tree.getOrigin(), c.getParsePosition(), "No matching constructor found"));
} else {
c.setMethodInformation(mi);
}
} catch (IOException e) {
diagnostics.report(
SourceDiagnostics.error(
tree.getOrigin(), c.getParsePosition(), "Failed to read class: " + e));
}
}
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;
}
@Override
public boolean visit(FieldAccess f) {
ExpressionType retType =
cip.getFieldType(f.getFrom().getExpressionType().getClassName(), f.getFieldId());
if (retType == null) {
diagnostics.report(
SourceDiagnostics.error(
tree.getOrigin(), f.getParsePosition(), "Cannot find symbol: %s", f.getFieldId()));
} else {
f.setReturnType(retType);
}
return true;
}
@Override
public boolean visit(MethodInvocation m) {
ExpressionType clzType = getOnType(m.getOn());
if (hasMethods(clzType, m)) {
String fqn = clzType.getClassName();
String name = m.getId();
ArgumentList al = m.getArgumentList();
try {
MethodInformation mi = findMatchingMethod(fqn, name, al);
if (mi == null) {
diagnostics.report(
SourceDiagnostics.error(
tree.getOrigin(), m.getParsePosition(), "No matching method found"));
} else {
m.setMethodInformation(mi);
}
} catch (IOException e) {
diagnostics.report(
SourceDiagnostics.error(
tree.getOrigin(), m.getParsePosition(), "Failed to read class: " + e));
}
}
return false;
}
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;
}