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package bjc.utils.ioutils.format.directives;
import java.io.*;
import bjc.esodata.*;
import bjc.utils.ioutils.format.*;
import bjc.utils.ioutils.format.exceptions.*;
/**
* Implementation of the ? directive, which does recursive execution of a format
* string.
*
* @author bjculkin
*
*/
public class RecursiveDirective implements Directive {
@Override
public Edict compile(CompileContext compCTX) {
return new RecursiveEdict(compCTX.decr.modifiers.atMod, compCTX.formatter);
}
}
class RecursiveEdict implements Edict {
private boolean isInline;
private CLFormatter fmt;
public RecursiveEdict(boolean isInline, CLFormatter fmt) {
this.isInline = isInline;
this.fmt = fmt;
}
@Override
public void format(FormatContext formCTX) throws IOException {
// System.err.printf("[TRACE] Processing ? directive with params: " +
// formCTX.items.toString());
Object body = formCTX.items.item();
formCTX.items.right();
if (isInline) {
if (!(body instanceof String)) {
throw new MismatchedFormatArgType("?", String.class, body.getClass());
}
try {
String bod = (String) body;
fmt.doFormatString(bod, formCTX.writer, formCTX.items, true);
} catch (DirectiveEscape eex) {
if (eex.endIteration) throw new UnexpectedColonEscape();
}
} else {
if (formCTX.items.atEnd()) {
throw new IllegalArgumentException(
"? directive requires two format parameters");
}
Object item = formCTX.items.item();
formCTX.items.right();
if (!(item instanceof Iterable<?>)) {
throw new MismatchedFormatArgType("?", Iterable.class, item.getClass());
}
if (!(body instanceof String)) {
throw new MismatchedFormatArgType("?", String.class, body.getClass());
}
@SuppressWarnings("unchecked")
Iterable<Object> itb = (Iterable<Object>) item;
Tape<Object> newParams = new SingleTape<>(itb);
try {
String bod = (String) body;
// :DynamicString
fmt.doFormatString(bod, formCTX.writer, newParams, true);
} catch (DirectiveEscape eex) {
throw new UnexpectedColonEscape();
}
}
}
}
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