FunctionModifier.ceylon
import ceylon.ast.core {
FunctionModifier,
Node
}
import com.redhat.ceylon.compiler.typechecker.tree {
JNode=Node,
Tree {
JFunctionModifier=FunctionModifier
}
}
import org.antlr.runtime {
ANTLRStringStream,
CommonTokenStream,
Token
}
import com.redhat.ceylon.compiler.typechecker.parser {
CeylonLexer {
functionType=\iFUNCTION_MODIFIER
}
}
"Converts a RedHat AST [[FunctionModifier|JFunctionModifier]] to a `ceylon.ast` [[FunctionModifier]]."
shared FunctionModifier functionModifierToCeylon(JFunctionModifier functionModifier, Anything(JNode,Node) update = noop) {
value result = FunctionModifier();
update(functionModifier, result);
return result;
}
"Compiles the given [[code]] for a Function Modifier
into a [[FunctionModifier]] using the Ceylon compiler
(more specifically, the lexer)."
shared FunctionModifier? compileFunctionModifier(String code, Anything(JNode,Node) update = noop) {
value stream = CommonTokenStream(CeylonLexer(ANTLRStringStream(code + " ")));
Token? token = stream.\iLT(1);
if (exists token, token.type == functionType) {
value jFunctionModifier = JFunctionModifier(token);
value result = FunctionModifier();
update(jFunctionModifier, result);
return result;
} else {
return null;
}
}