private void walkRootNode(
final Compiler.Context context, final AST node, final String namespace) {
switch (node.getNodeLabel()) {
case ProtoLexer.ENUM:
context.addExpandedRoot(walkEnumNode(context, node, namespace, MessageDefinition.NULL));
break;
case ProtoLexer.EXTERN:
walkExternNode(context, node, namespace, MessageDefinition.NULL);
break;
case ProtoLexer.MESSAGE:
context.addExpandedRoot(walkMessageNode(context, node, namespace, MessageDefinition.NULL));
break;
case ProtoLexer.NAMESPACE:
walkNamespaceNode(context, node, namespace);
break;
case ProtoLexer.TAXONOMY:
context.addExpandedRoot(walkTaxonomyNode(context, node, namespace));
break;
case ProtoLexer.TYPEDEF:
context.addExpandedRoot(walkTypedefNode(context, node, namespace, false));
break;
default:
throw new IllegalStateException("invalid root type '" + node.getNodeLabel() + "'");
}
}
private void walkExternNode(
final Compiler.Context context,
final AST node,
final String namespace,
final MessageDefinition outerMessage) {
final List<AST> children = node.getChildNodes();
final AST what = children.get(0);
switch (what.getNodeLabel()) {
case ProtoLexer.TYPEDEF:
{
final AST typedef = walkTypedefNode(context, what, namespace, true);
children.set(0, typedef);
context.addExpandedRoot(new ASTNode(node, children));
return;
}
}
final String localNamespace;
final AST identifier = fixupFullIdentifier(children.get(1));
if (namespace.length() != 0) {
localNamespace = namespace + "." + identifier.getNodeValue();
} else {
localNamespace = identifier.getNodeValue();
}
switch (what.getNodeLabel()) {
case ProtoLexer.ENUM:
context.addDefinition(
outerMessage.createEnumDefinition(localNamespace, identifier.getCodePosition(), false));
break;
case ProtoLexer.MESSAGE:
final MessageDefinition messageDefinition =
outerMessage.createMessageDefinition(
localNamespace, identifier.getCodePosition(), false);
if (children.size() < 3) {
messageDefinition.setExternal();
}
context.addDefinition(messageDefinition);
break;
case ProtoLexer.TAXONOMY:
context.addDefinition(
new TaxonomyDefinition(localNamespace, identifier.getCodePosition(), false));
break;
default:
throw new IllegalStateException("unexpected extern type '" + node.getNodeLabel() + "'");
}
}
