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package org.webmacro.directive; |
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import java.io.IOException; |
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import org.webmacro.Context; |
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import org.webmacro.FastWriter; |
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import org.webmacro.Macro; |
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import org.webmacro.PropertyException; |
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import org.webmacro.TemplateVisitor; |
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import org.webmacro.engine.BuildContext; |
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import org.webmacro.engine.BuildException; |
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import org.webmacro.engine.Variable; |
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public class SetblockDirective extends Directive |
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{ |
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private static final int SETBLOCK_AS = 1; |
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private static final int SETBLOCK_MACRO = 2; |
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private static final int SETBLOCK_TARGET = 3; |
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private static final int SETBLOCK_RESULT = 4; |
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|
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private Variable target; |
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private Object result; |
| 49 | 0 | private boolean asMacro = false; |
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private static final ArgDescriptor[] |
| 52 | 2 | myArgs = new ArgDescriptor[]{ |
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new OptionalGroup(2), |
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new KeywordArg(SETBLOCK_AS, "as"), |
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new KeywordArg(SETBLOCK_MACRO, "macro"), |
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new LValueArg(SETBLOCK_TARGET), |
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new BlockArg(SETBLOCK_RESULT) |
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}; |
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private static final DirectiveDescriptor |
| 61 | 2 | myDescr = new DirectiveDescriptor("setblock", null, myArgs, null); |
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public static DirectiveDescriptor getDescriptor () |
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{ |
| 65 | 6 | return myDescr; |
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} |
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public SetblockDirective () |
| 69 | 0 | { |
| 70 | 0 | } |
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public Object build (DirectiveBuilder builder, |
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BuildContext bc) |
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throws BuildException |
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{ |
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try |
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{ |
| 78 | 0 | target = (Variable) builder.getArg(SETBLOCK_TARGET, bc); |
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} |
| 80 | 0 | catch (ClassCastException e) |
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{ |
| 82 | 0 | throw new NotVariableBuildException(myDescr.name, e); |
| 83 | 0 | } |
| 84 | 0 | Object macroKeyword = builder.getArg(SETBLOCK_MACRO, bc); |
| 85 | 0 | asMacro = (macroKeyword != null); |
| 86 | 0 | result = builder.getArg(SETBLOCK_RESULT, bc); |
| 87 | 0 | return this; |
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} |
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public void write (FastWriter out, Context context) |
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throws PropertyException, IOException |
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{ |
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|
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try |
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{ |
| 96 | 0 | if (result instanceof Macro && !asMacro) |
| 97 | 0 | target.setValue(context, ((Macro) result).evaluate(context)); |
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else |
| 99 | 0 | target.setValue(context, result); |
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} |
| 101 | 0 | catch (PropertyException e) |
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{ |
| 103 | 0 | throw e; |
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} |
| 105 | 0 | catch (Exception e) |
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{ |
| 107 | 0 | String errorText = "#setblock: Unable to set " + target; |
| 108 | 0 | writeWarning(errorText, context, out); |
| 109 | 0 | } |
| 110 | 0 | } |
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public void accept (TemplateVisitor v) |
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{ |
| 114 | 0 | v.beginDirective(myDescr.name); |
| 115 | 0 | if (asMacro) |
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{ |
| 117 | 0 | v.visitDirectiveArg("SetblockKeyword", "as"); |
| 118 | 0 | v.visitDirectiveArg("SetblockKeyword", "macro"); |
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} |
| 120 | 0 | v.visitDirectiveArg("SetblockTarget", target); |
| 121 | 0 | v.visitDirectiveArg("SetblockValue", result); |
| 122 | 0 | v.endDirective(); |
| 123 | 0 | } |
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} |