New Utils\Context class
#219
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This class introduces five new utility methods to examine the context in which an arbitrary token is used. The class currently contains the following methods: * `inEmpty()` - to check whether an arbitrary token is used within the `empty()` language construct. Returns boolean. * `inIsset()` - to check whether an arbitrary token is used within the `isset()` language construct. Returns boolean. * `inUnset()` - to check whether an arbitrary token is used within the `unset()` language construct. Returns boolean. * `inForeachCondition()` - to check whether an arbitrary token is used within the condition of a `foreach()` control structure and if so, in what part. Returns string `beforeAs`, `as` or `afterAs` or `false` when not in a foreach condition or in case of a parse error. * `inForCondition()` - to check whether an arbitrary token is used within the condition of a `for()` control structure and if so, in what part. Returns string `expr1`, `expr2` or `expr3` or `false` when not in a for condition or in case of a parse error. Includes dedicated unit tests for each method.
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@sirbrillig I imagine the methods in this PR might be useful for you in VariableAnalysis too ? |
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This class introduces five new utility methods to examine the context in which an arbitrary token is used.
The class currently contains the following methods:
inEmpty()- to check whether an arbitrary token is used within theempty()language construct. Returns boolean.inIsset()- to check whether an arbitrary token is used within theisset()language construct. Returns boolean.inUnset()- to check whether an arbitrary token is used within theunset()language construct. Returns boolean.inForeachCondition()- to check whether an arbitrary token is used within the condition of aforeach()control structure and if so, in what part. Returns stringbeforeAs,asorafterAsorfalsewhen not in a foreach condition or in case of a parse error.inForCondition()- to check whether an arbitrary token is used within the condition of afor()control structure and if so, in what part. Returns stringexpr1,expr2orexpr3orfalsewhen not in a for condition or in case of a parse error.Includes dedicated unit tests for each method.