fix: Resolve <<< parsing error. (asummers#45)

elixir-lsp · Mar 9, 2020 · cb84676 · cb84676
1 parent 35986f7
commit cb84676
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Showing 3 changed files with 11 additions and 6 deletions.
diff --git a/src/lexer.xrl b/src/lexer.xrl
@@ -31,9 +31,7 @@ _ : {token, {'_',  TokenLine}}.
 \=\> : {token, {'=>',  TokenLine}}.
 \-\> : {token, {'->',  TokenLine}}.
 \| : {token, {'|',  TokenLine}}.
-\<\< : {token, {'<<', TokenLine}}.
 \< : {token, {'<', TokenLine}}.
-\>\> : {token, {'>>', TokenLine}}.
 \> : {token, {'>', TokenLine}}.
 \' : {token, {'\'',  TokenLine}}.
 , : {token, {',',  TokenLine}}.

diff --git a/src/parser.yrl b/src/parser.yrl
@@ -37,7 +37,6 @@ int
 '::'
 ':'
 '...'
-'<<' '>>'
 '<' '>'
 '*'
 'when'
@@ -67,9 +66,9 @@ value -> rest : '$1'.
 value -> tuple : '$1'.
 value -> type : '$1'.
 
-binary -> '<<' '>>' : {binary, []}.
-binary -> '<<' binary_items '>>' : {binary, '$2'}.
-binary -> '<<' value_items '>>' : {binary, '$2'}.
+binary -> '<' '<' '>' '>' : {binary, []}.
+binary -> '<' '<' binary_items '>' '>' : {binary, '$3'}.
+binary -> '<' '<' value_items '>' '>' : {binary, '$3'}.
 
 pattern -> '<' value_items '>' : {pattern, '$2'}.
 

diff --git a/test/literals_pretty_print_test.exs b/test/literals_pretty_print_test.exs
@@ -123,4 +123,12 @@ defmodule Erlex.Test.LiteralsPretyPrintTest do
     expected_output = "<<_ :: 64, _ :: size(8)>>"
     assert pretty_printed == expected_output
   end
+
+  test "binary as first value in pattern" do
+    input = "<<<_:8,_:_*1>>,'false'>"
+
+    pretty_printed = Erlex.pretty_print(input)
+
+    assert pretty_printed == "<<_ :: 8, _ :: size(1)>>, false"
+  end
 end