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package bjc.utils.ioutils.format.directives;
import bjc.utils.ioutils.format.*;
/**
* Implementation skeleton for number directives.
*
* @author student
*
*/
public abstract class GeneralNumberDirective implements Directive {
/**
* Parameters for doing number formatting.
*
* @author bjculkin
*
*/
public static class NumberParams {
/**
* Minimum # of printed columns
*/
public CLValue mincol = CLValue.nil();
/**
* Character to use for padding if needed.
*/
public CLValue padchar = CLValue.nil();
/**
* Should the sign always be printed?
*/
public boolean signed;
/**
* Should there be commas inserted into the numbers?
*/
public boolean commaMode;
/**
* Number of places to go before inserting a comma.
*/
public CLValue commaInterval = CLValue.nil();
/**
* Character to use as a comma.
*/
public CLValue commaChar = CLValue.nil();
}
/**
* Get the parameters for a general number-handling directive.
*
* @param compCTX
* The compilation context at this point.
* @param argidx
* The argument index to start looking at.
*
* @return The parsed number parameters.
*/
protected NumberParams getParams(CompileContext compCTX, int argidx) {
CLParameters params = compCTX.decr.parameters;
CLModifiers mods = compCTX.decr.modifiers;
NumberParams np = new NumberParams();
if (params.length() >= (argidx + 2)) {
params.mapIndex("mincol", argidx + 1);
np.mincol = params.resolveKey("mincol");
}
if (params.length() >= (argidx + 3)) {
params.mapIndex("padchar", argidx + 2);
np.padchar = params.resolveKey("padchar");
}
if (mods.colonMod) {
np.commaMode = true;
if (params.length() >= (argidx + 4)) {
params.mapIndex("cchar", argidx + 3);
np.commaChar = params.resolveKey("cchar");
}
if (params.length() >= (argidx + 5)) {
params.mapIndex("cinterval", argidx + 4);
np.commaInterval = params.resolveKey("cinterval");
}
}
np.signed = mods.atMod;
return np;
}
}
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