abstract classafPegger::Rule

sys::Obj
  afPegger::Rule

A PEG Rule.

Use the common rules declared in Rules or implement to define your own.

action

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virtual |Str? action

The action to be performed upon successful completion of this rule.

definition

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Str definition()

Returns the PEG definition for this rule. Example:

alphaNum <- [a-zA-Z0-9]

doProcess

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protected abstract Bool doProcess(PegCtx ctx)

Override to implement Rule logic.

expression

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abstract Str expression()

Returns the PEG expression for this rule. Example:

[a-zA-Z0-9]

name

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Str? name

The name of this rule. Only rules with names appear in debug output. Should be legal Fantom identifier (think variable names!).

withAction

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This withAction(|Str? action)

A helpful builder method for setting the action.

withName

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This withName(Str name)

A helpful builder method for setting the name.