JFlex
public final class Macros extends Object
Constructor Summary | |
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Macros()
Creates a new macro expander. |
Method Summary | |
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void | expand()
Expands all stored macros, so that getDefinition always returns
a defintion that doesn't contain any macro usages.
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RegExp | getDefinition(String name)
Fetches the definition of the macro with the specified name,
The definition will either be the same as stored (expand() not called), or an equivalent one, that doesn't contain any macro usages (expand() called before). |
boolean | insert(String name, RegExp definition)
Stores a new macro and its definition.
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boolean | isUsed(String name)
Tests if a macro has been used.
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boolean | markUsed(String name)
Marks a makro as used.
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Enumeration | unused()
Returns all unused macros.
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Throws: MacroException if there is a cycle in the macro usage graph.
The definition will either be the same as stored (expand() not called), or an equivalent one, that doesn't contain any macro usages (expand() called before).
Parameters: name the name of the macro
Returns: the definition of the macro, null
if
no macro with the specified name has been stored.
See Also: Macros
Parameters: name the name of the new macro definition the definition of the new macro
Returns: true
, iff the macro name has not been
stored before.
Returns: true
, iff the macro has been used in
a regular expression.
Returns: true
, iff the macro name has been
stored before.
Returns: the enumeration of macro-names that have not been used.