2003-08-14 12:48:10 +00:00
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2004-04-20 14:45:26 +00:00
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2003-08-14 12:48:10 +00:00
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<head>
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<meta http-equiv="Content-Language" content="en-us"></meta>
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<title>MacroDef Task</title>
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2004-04-20 15:42:34 +00:00
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<link rel="stylesheet" type="text/css" href="../stylesheets/antmanual.css">
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<style type="text/css">
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.code { background: #EFEFEF; margin-top: }
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-->
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</style>
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</head>
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2004-04-20 14:45:26 +00:00
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2003-08-14 12:48:10 +00:00
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<body>
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2004-04-20 14:45:26 +00:00
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2003-08-14 12:48:10 +00:00
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<h2><a name="macrodef">MacroDef</a></h2>
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<h3>Description</h3>
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<p>
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This defines a new task using a <sequential>
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nested task as a template. Nested elements <attribute> and
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<element> are used to specify attributes and elements of
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the new task. These get substituted into the <sequential>
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task when the new task is run.
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</p>
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<h3>Note</h3>
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<p>
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You can also use <i>prior defined</i> attributes for default-values in
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other attributes. See the examples.
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</p>
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<p>
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<em>since Ant 1.6</em>
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</p>
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<h3>Parameters</h3>
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td align="center" valign="top"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">name</td>
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<td valign="top">The name of the new definition</td>
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<td valign="top" align="center">Yes</td>
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</tr>
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<tr>
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<td valign="top">uri</td>
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<td valign="top">
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The uri that this definition should live in.
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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</table>
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<h3>Parameters specified as nested elements</h3>
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<h4>attribute</h4>
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<p>
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This is used to specify attributes of the new task. The values
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of the attributes get substituted into the templated task.
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The attributes will be required attributes unless a default
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value has been set.
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</p>
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<p>
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This attribute is placed in the body of the templated
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task using a notation similar to the ant property notation
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- @{attribute name}. (May be remembered as "put the substitution
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AT this location").
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</p>
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<p>
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The escape sequence @@ is used to escape @. This allows @{x} to be
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placed in the text without substitution of x by using @@{x}.
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This corresponds to the $$ escape sequence for properties.
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</p>
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<p>
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The case of the attribute is ignored, so @{myAttribute} is treated the
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same as @{MyAttribute}.
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</p>
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<h3>Parameters</h3>
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td align="center" valign="top"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">name</td>
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<td valign="top">The name of the new attribute</td>
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<td valign="top" align="center">Yes</td>
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</tr>
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<tr>
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<td valign="top">default</td>
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<td valign="top">
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The default value of the attribute.
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">description</td>
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<td valign="top">
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This contains a description of the attribute.
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<em>since ant 1.6.1</em>
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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</table>
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<h4>element</h4>
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<p>
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This is used to specify nested elements of the new task.
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The contents of the nested elements of the task instance
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are placed in the templated task at the tag name.
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</p>
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<p>
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The case of the element name is ignored.
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</p>
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<h3>Parameters</h3>
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td align="center" valign="top"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">name</td>
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<td valign="top">The name of the element</td>
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<td valign="top" align="center">Yes</td>
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</tr>
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<tr>
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<td valign="top">optional</td>
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<td valign="top">
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If true this nested element is optional. Default is
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false - i.e the nested element is required in
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the new task.
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">implicit</td>
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<td valign="top">
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If true this nested element is implicit. This means that
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any nested elements of the macrodef instance will be placed
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in the element indicated by the name of this element.
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There can only be one element if an element is implicit.
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The default value is false. <em>since ant 1.6.2</em>
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">description</td>
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<td valign="top">
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This contains a description
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informing the user what the contents of the element are expected to be.
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<em>since ant 1.6.1</em>
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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</table>
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2004-01-27 17:43:25 +00:00
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<h4>text</h4>
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<p>
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This is used to specify the treatment of text contents of the macrodef.
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If this element is not present, then any nested text in the macro
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will be an error. If the text element is present, then the name
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becomes an attribute that gets set to the nested text of the macro.
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<em>Since ant 1.6.1.</em>
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</p>
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<p>
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The case of the text name is ignored.
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</p>
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<h3>Parameters</h3>
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<table border="1" cellpadding="2" cellspacing="0">
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<tr>
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<td valign="top"><b>Attribute</b></td>
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<td valign="top"><b>Description</b></td>
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<td align="center" valign="top"><b>Required</b></td>
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</tr>
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<tr>
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<td valign="top">name</td>
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<td valign="top">The name of the text attribute</td>
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<td valign="top" align="center">Yes</td>
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</tr>
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<tr>
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<td valign="top">optional</td>
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<td valign="top">
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If true nested text in the macro is optional, default is "false".
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">trim</td>
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<td valign="top">
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If true, the nested text is trimmed of white space,
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default is "false".
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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<tr>
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<td valign="top">description</td>
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<td valign="top">
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This contains a description
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informing the user what the nested text of the macro is expected
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to be.
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</td>
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<td valign="top" align="center">No</td>
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</tr>
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</table>
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<h3>Examples</h3>
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<p>
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The following example defined a task called testing and
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runs it.
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</p>
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<blockquote>
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<pre class=code>
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<macrodef name="testing">
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<attribute name="v" default="NOT SET"/>
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<element name="some-tasks" optional="yes"/>
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<sequential>
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<echo>v is @{v}</echo>
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<some-tasks/>
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</sequential>
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</macrodef>
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<testing v="This is v">
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<some-tasks>
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<echo>this is a test</echo>
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</some-tasks>
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</testing>
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</pre>
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</blockquote>
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<p>
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The following fragment defines a task called <call-cc> which
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take the attributes "target", "link" and "target.dir" and the
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nested element "cc-elements". The body of the task
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uses the <cc> task from the
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<a href="http://ant-contrib.sourceforge.net/">ant-contrib</a> project.
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</p>
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<blockquote>
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<pre class="code">
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<macrodef name="call-cc">
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<attribute name="target"/>
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<attribute name="link"/>
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<attribute name="target.dir"/>
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<element name="cc-elements"/>
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<sequential>
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<mkdir dir="${obj.dir}/@{target}"/>
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<mkdir dir="@{target.dir}"/>
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<cc link="@{link}" objdir="${obj.dir}/@{target}"
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outfile="@{target.dir}/@{target}">
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<compiler refid="compiler.options"/>
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<cc-elements/>
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</cc>
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</sequential>
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</macrodef>
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</pre>
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</blockquote>
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<p>
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This then can be used as follows:
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</p>
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<blockquote>
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<pre class="code">
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<call-cc target="unittests" link="executable"
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target.dir="${build.bin.dir}">
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<cc-elements>
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<includepath location="${gen.dir}"/>
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<includepath location="test"/>
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<fileset dir="test/unittest" includes = "**/*.cpp"/>
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<fileset dir="${gen.dir}" includes = "*.cpp"/>
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<linker refid="linker-libs"/>
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</cc-elements>
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</call-cc>
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2004-05-27 14:38:46 +00:00
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</pre>
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</blockquote>
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<p>
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The following fragment shows <call-cc>, but this time
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using an implicit element and with the link and target.dir arguments
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having default values.
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</p>
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<blockquote>
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<pre class="code">
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<macrodef name="call-cc">
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<attribute name="target"/>
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<attribute name="link" default="executable"/>
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<attribute name="target.dir" default="${build.bin.dir}"/>
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<element name="cc-elements" implicit="yes"/>
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<sequential>
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<mkdir dir="${obj.dir}/@{target}"/>
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<mkdir dir="@{target.dir}"/>
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<cc link="@{link}" objdir="${obj.dir}/@{target}"
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outfile="@{target.dir}/@{target}">
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<compiler refid="compiler.options"/>
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<cc-elements/>
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</cc>
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</sequential>
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</macrodef>
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</pre>
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</blockquote>
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<p>
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This then can be used as follows, note that <cc-elements>
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is not specified.
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</p>
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<blockquote>
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<pre class="code">
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<call-cc target="unittests"/>
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<includepath location="${gen.dir}"/>
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<includepath location="test"/>
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<fileset dir="test/unittest" includes = "**/*.cpp"/>
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<fileset dir="${gen.dir}" includes = "*.cpp"/>
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|
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<linker refid="linker-libs"/>
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</call-cc>
|
2004-01-22 16:33:16 +00:00
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</pre>
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</blockquote>
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<p>
|
2004-01-27 17:43:25 +00:00
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|
The following shows the use of the <code>text</code> element.
|
2004-01-22 16:33:16 +00:00
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</p>
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<blockquote>
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|
<pre class="code">
|
2004-01-27 17:43:25 +00:00
|
|
|
<macrodef name="echotest">
|
2004-05-07 18:00:43 +00:00
|
|
|
<text name="text"/>
|
2004-01-22 16:33:16 +00:00
|
|
|
<sequential>
|
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|
|
|
<echo>@{text}</echo>
|
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|
|
</sequential>
|
|
|
|
|
</macrodef>
|
|
|
|
|
<echotest>
|
|
|
|
|
Hello world
|
|
|
|
|
</echotest>
|
2004-04-20 14:45:26 +00:00
|
|
|
</pre>
|
|
|
|
|
</blockquote>
|
|
|
|
|
<p>
|
2004-04-20 15:26:39 +00:00
|
|
|
The following uses a prior defined attribute for setting the
|
2004-04-20 14:45:26 +00:00
|
|
|
default value of another. The output would be
|
|
|
|
|
<tt>one=test two=test</tt>. If you change the order of lines
|
|
|
|
|
*1 and *2 the output would be <tt>one=test two=@{one}</tt>,
|
|
|
|
|
because while processing the <i>two</i>-line the value for
|
|
|
|
|
<i>one</i> is not set.
|
|
|
|
|
</p>
|
|
|
|
|
<blockquote>
|
|
|
|
|
<pre class="code">
|
|
|
|
|
<macrodef name="test"/>
|
|
|
|
|
<attribute name="one"/> <b>*1</b>
|
|
|
|
|
<attribute name="two" default="@{one}"/> <b>*2</b>
|
|
|
|
|
<sequential>
|
|
|
|
|
<echo>one=@{one} two=@{two}</echo>
|
|
|
|
|
</sequential>
|
|
|
|
|
</macrodef/>
|
|
|
|
|
<test one="test"/>
|
2003-12-03 13:16:01 +00:00
|
|
|
</pre>
|
2003-08-14 12:48:10 +00:00
|
|
|
</blockquote>
|
|
|
|
|
<hr>
|
2004-04-20 15:42:34 +00:00
|
|
|
<p align="center">Copyright © 2003-2004 The Apache Software
|
2003-08-14 12:48:10 +00:00
|
|
|
Foundation. All rights Reserved.</p>
|
|
|
|
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</body>
|
2004-05-07 18:00:43 +00:00
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</html>
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