package javarepl.rendering;
import com.googlecode.totallylazy.annotations.multimethod;
import com.googlecode.totallylazy.multi;
import javarepl.expressions.*;
import static java.lang.String.format;
public class ExpressionTokenRenderer {
public static final String EXPRESSION_TOKEN = "$JAVAREPL_EXPRESSION_TOKEN$";
public static final String EXPRESSION_VALUE = "$JAVAREPL_EXPRESSION_VALUE$";
@multimethod
public static String renderExpressionToken(Expression expression) {
return new multi() {
}.<String>methodOption(expression)
.getOrThrow(new IllegalArgumentException(expression + " not mapped"));
}
@multimethod
private static String renderExpressionToken(Statement expression) {
return " " + EXPRESSION_TOKEN + ";";
}
@multimethod
private static String renderExpressionToken(Assignment expression) {
return expressionWithValue(expression.value());
}
@multimethod
private static String renderExpressionToken(AssignmentWithType expression) {
return expressionWithValue(expression.value(), expression.type());
}
@multimethod
private static String renderExpressionToken(Value expression) {
return expressionWithValue(expression.source());
}
@multimethod
private static String renderExpressionToken(Method expression) {
return " " + EXPRESSION_TOKEN + "\n";
}
@multimethod
private static String renderExpressionToken(Import expression) {
return EXPRESSION_TOKEN + ";";
}
private static String expressionWithValue(String value) {
return expressionWithValue(value, Object.class);
}
private static String expressionWithValue(String value, java.lang.reflect.Type returnType) {
return expressionWithValue(value, TypeRenderer.renderType(returnType));
}
private static String expressionWithValue(String value, String returnType) {
return format(" %s %s =\n\n %s;\n\n return %s;", returnType, EXPRESSION_VALUE, EXPRESSION_TOKEN, EXPRESSION_VALUE);
}
}