ValueModifier.ceylon
import ceylon.ast.core {
Node,
ValueModifier
}
import com.redhat.ceylon.compiler.typechecker.tree {
JNode=Node,
Tree {
JValueModifier=ValueModifier
}
}
import org.antlr.runtime {
ANTLRStringStream,
CommonTokenStream,
Token
}
import com.redhat.ceylon.compiler.typechecker.parser {
CeylonLexer {
valueType=\iVALUE_MODIFIER
}
}
"Converts a RedHat AST [[ValueModifier|JValueModifier]] to a `ceylon.ast` [[ValueModifier]]."
shared ValueModifier valueModifierToCeylon(JValueModifier valueModifier, Anything(JNode,Node) update = noop) {
value result = ValueModifier();
update(valueModifier, result);
return result;
}
"Compiles the given [[code]] for a Value Modifier
into a [[ValueModifier]] using the Ceylon compiler
(more specifically, the lexer)."
shared ValueModifier? compileValueModifier(String code, Anything(JNode,Node) update = noop) {
value stream = CommonTokenStream(CeylonLexer(ANTLRStringStream(code + " ")));
Token? token = stream.\iLT(1);
if (exists token, token.type == valueType) {
value jValueModifier = JValueModifier(token);
value result = ValueModifier();
update(jValueModifier, result);
return result;
} else {
return null;
}
}