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authorAnthony Ramine <[email protected]>2014-06-27 14:47:26 +0200
committerAnthony Ramine <[email protected]>2014-08-20 12:30:13 +0200
commita46f30f38f0e757e9aa335e1452879db608d8489 (patch)
treea1c7fb2a0b9f0d7887f806f1090d3a91fd06ed03 /erts/doc
parent764b0412344bf64f8b02ce198c41f14675b493a7 (diff)
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Properly support maps in match_specs
Diffstat (limited to 'erts/doc')
-rw-r--r--erts/doc/src/match_spec.xml57
1 files changed, 33 insertions, 24 deletions
diff --git a/erts/doc/src/match_spec.xml b/erts/doc/src/match_spec.xml
index 334b47d34c..b4cc8e9f78 100644
--- a/erts/doc/src/match_spec.xml
+++ b/erts/doc/src/match_spec.xml
@@ -76,22 +76,26 @@
{ GuardFunction, ConditionExpression, ... }
</item>
<item>BoolFunction ::= <c><![CDATA[is_atom]]></c> |
- <c><![CDATA[is_float]]></c> | <c><![CDATA[is_integer]]></c> | <c><![CDATA[is_list]]></c> |
- <c><![CDATA[is_number]]></c> | <c><![CDATA[is_pid]]></c> | <c><![CDATA[is_port]]></c> |
- <c><![CDATA[is_reference]]></c> | <c><![CDATA[is_tuple]]></c> | <c><![CDATA[is_binary]]></c> |
- <c><![CDATA[is_function]]></c> | <c><![CDATA[is_record]]></c> | <c><![CDATA[is_seq_trace]]></c> |
- <c><![CDATA['and']]></c> | <c><![CDATA['or']]></c> | <c><![CDATA['not']]></c> | <c><![CDATA['xor']]></c> |
- <c><![CDATA[andalso]]></c> | <c><![CDATA[orelse]]></c></item>
+ <c><![CDATA[is_float]]></c> | <c><![CDATA[is_integer]]></c> |
+ <c><![CDATA[is_list]]></c> | <c><![CDATA[is_number]]></c> |
+ <c><![CDATA[is_pid]]></c> | <c><![CDATA[is_port]]></c> |
+ <c><![CDATA[is_reference]]></c> | <c><![CDATA[is_tuple]]></c> |
+ <c><![CDATA[is_map]]></c> | <c><![CDATA[is_binary]]></c> |
+ <c><![CDATA[is_function]]></c> | <c><![CDATA[is_record]]></c> |
+ <c><![CDATA[is_seq_trace]]></c> | <c><![CDATA['and']]></c> |
+ <c><![CDATA['or']]></c> | <c><![CDATA['not']]></c> |
+ <c><![CDATA['xor']]></c> | <c><![CDATA[andalso]]></c> |
+ <c><![CDATA[orelse]]></c></item>
<item>ConditionExpression ::= ExprMatchVariable | { GuardFunction } |
{ GuardFunction, ConditionExpression, ... } | TermConstruct
</item>
<item>ExprMatchVariable ::= MatchVariable (bound in the MatchHead) |
<c><![CDATA['$_']]></c> | <c><![CDATA['$$']]></c></item>
- <item>TermConstruct = {{}} | {{ ConditionExpression, ... }} |
- <c><![CDATA[[]]]></c> | [ConditionExpression, ...] | NonCompositeTerm | Constant
- </item>
- <item>NonCompositeTerm ::= term() (not list or tuple)
- </item>
+ <item>TermConstruct = {{}} | {{ ConditionExpression, ... }} |
+ <c><![CDATA[[]]]></c> | [ConditionExpression, ...] |
+ <c><![CDATA[#{}]]></c> | #{term() => ConditionExpression, ...} |
+ NonCompositeTerm | Constant</item>
+ <item>NonCompositeTerm ::= term() (not list or tuple or map)</item>
<item>Constant ::= {<c><![CDATA[const]]></c>, term()}
</item>
<item>GuardFunction ::= BoolFunction | <c><![CDATA[abs]]></c> |
@@ -134,22 +138,26 @@
{ GuardFunction, ConditionExpression, ... }
</item>
<item>BoolFunction ::= <c><![CDATA[is_atom]]></c> |
- <c><![CDATA[is_float]]></c> | <c><![CDATA[is_integer]]></c> | <c><![CDATA[is_list]]></c> |
- <c><![CDATA[is_number]]></c> | <c><![CDATA[is_pid]]></c> | <c><![CDATA[is_port]]></c> |
- <c><![CDATA[is_reference]]></c> | <c><![CDATA[is_tuple]]></c> | <c><![CDATA[is_binary]]></c> |
- <c><![CDATA[is_function]]></c> | <c><![CDATA[is_record]]></c> | <c><![CDATA[is_seq_trace]]></c> |
- <c><![CDATA['and']]></c> | <c><![CDATA['or']]></c> | <c><![CDATA['not']]></c> | <c><![CDATA['xor']]></c> |
- <c><![CDATA[andalso]]></c> | <c><![CDATA[orelse]]></c></item>
+ <c><![CDATA[is_float]]></c> | <c><![CDATA[is_integer]]></c> |
+ <c><![CDATA[is_list]]></c> | <c><![CDATA[is_number]]></c> |
+ <c><![CDATA[is_pid]]></c> | <c><![CDATA[is_port]]></c> |
+ <c><![CDATA[is_reference]]></c> | <c><![CDATA[is_tuple]]></c> |
+ <c><![CDATA[is_map]]></c> | <c><![CDATA[is_binary]]></c> |
+ <c><![CDATA[is_function]]></c> | <c><![CDATA[is_record]]></c> |
+ <c><![CDATA[is_seq_trace]]></c> | <c><![CDATA['and']]></c> |
+ <c><![CDATA['or']]></c> | <c><![CDATA['not']]></c> |
+ <c><![CDATA['xor']]></c> | <c><![CDATA[andalso]]></c> |
+ <c><![CDATA[orelse]]></c></item>
<item>ConditionExpression ::= ExprMatchVariable | { GuardFunction } |
{ GuardFunction, ConditionExpression, ... } | TermConstruct
</item>
<item>ExprMatchVariable ::= MatchVariable (bound in the MatchHead) |
<c><![CDATA['$_']]></c> | <c><![CDATA['$$']]></c></item>
<item>TermConstruct = {{}} | {{ ConditionExpression, ... }} |
- <c><![CDATA[[]]]></c> | [ConditionExpression, ...] | NonCompositeTerm | Constant
- </item>
- <item>NonCompositeTerm ::= term() (not list or tuple)
- </item>
+ <c><![CDATA[[]]]></c> | [ConditionExpression, ...] | #{} |
+ #{term() => ConditionExpression, ...} | NonCompositeTerm |
+ Constant</item>
+ <item>NonCompositeTerm ::= term() (not list or tuple or map)</item>
<item>Constant ::= {<c><![CDATA[const]]></c>, term()}
</item>
<item>GuardFunction ::= BoolFunction | <c><![CDATA[abs]]></c> |
@@ -172,9 +180,10 @@
<title>Functions allowed in all types of match specifications</title>
<p>The different functions allowed in <c><![CDATA[match_spec]]></c> work like this:
</p>
- <p><em>is_atom, is_float, is_integer, is_list, is_number, is_pid, is_port, is_reference, is_tuple, is_binary, is_function: </em> Like the corresponding guard tests in
- Erlang, return <c><![CDATA[true]]></c> or <c><![CDATA[false]]></c>.
- </p>
+ <p><em>is_atom, is_float, is_integer, is_list, is_number, is_pid, is_port,
+ is_reference, is_tuple, is_map, is_binary, is_function:</em> Like the
+ corresponding guard tests in Erlang, return <c><![CDATA[true]]></c> or
+ <c><![CDATA[false]]></c>.</p>
<p><em>is_record: </em>Takes an additional parameter, which SHALL
be the result of <c><![CDATA[record_info(size, <record_type>)]]></c>,
like in <c><![CDATA[{is_record, '$1', rectype, record_info(size, rectype)}]]></c>.