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authorBjörn Gustavsson <[email protected]>2017-11-15 13:12:11 +0100
committerBjörn Gustavsson <[email protected]>2017-11-30 12:46:50 +0100
commit0c4574cc31414a5204eabfad7eb0ac5095c0ace1 (patch)
treec6f4cbe472b21410c57c66bb25a0aefe77398113 /.dir-locals.el
parent6fb6f4222f2cf924cbb9174d33c3b3190cfe52f2 (diff)
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erl_parse: Use a new pat_expr rule for pattern expressions
In the grammar file for the Erlang language, patterns are parsed as expressions. erl_lint will then weed out expressions that are not legal patterns. The rule sharing causes problems if we were to introduce new syntax, for example a pattern followed by a ':'. There would be a shift/reduce conflict, and a pattern followed by a ':' would be parsed as a remote call. Introduce a new pat_expr rule to express exactly the subset of expressions that is allowed in pattern. Note: For the moment, we must allow full expressions in case clauses to keep 'merl' working.
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