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| author | Anthony Ramine <[email protected]> | 2014-01-31 20:09:44 +0100 |
|---|---|---|
| committer | Anthony Ramine <[email protected]> | 2014-01-31 20:28:18 +0100 |
| commit | e5ccb57c0e45535d4b2b34cc85b177056b67b2da (patch) | |
| tree | 20cde059aeb1460074f12f2472730f1e12ef564f /erts/doc/src | |
| parent | eec1d22c5aef21ad4606c79465084bbff46d42ee (diff) | |
| download | otp-e5ccb57c0e45535d4b2b34cc85b177056b67b2da.tar.gz otp-e5ccb57c0e45535d4b2b34cc85b177056b67b2da.tar.bz2 otp-e5ccb57c0e45535d4b2b34cc85b177056b67b2da.zip | |
Document maps-related abstract syntax trees
{map,Loc,Fields}
{map,Loc,Argument,Fields}
{map_field_assoc,Loc,Name,Value}
{map_field_exact,Loc,Name,Value}
Diffstat (limited to 'erts/doc/src')
| -rw-r--r-- | erts/doc/src/absform.xml | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/erts/doc/src/absform.xml b/erts/doc/src/absform.xml index 4acc03b133..835a4fc692 100644 --- a/erts/doc/src/absform.xml +++ b/erts/doc/src/absform.xml @@ -217,6 +217,14 @@ Rep(E) = <c><![CDATA[{record_index,LINE,Name,Rep(Field)}]]></c>.</item> <item>If E is <c><![CDATA[E_0#Name.Field]]></c>, then Rep(E) = <c><![CDATA[{record_field,LINE,Rep(E_0),Name,Rep(Field)}]]></c>.</item> + <item>If E is <c><![CDATA[#{W_1, ..., W_k}]]></c> where each + <c><![CDATA[W_i]]></c> is a map assoc or exact field, then Rep(E) = + <c><![CDATA[{map,LINE,[Rep(W_1), ..., Rep(W_k)]}]]></c>. For Rep(W), see + below.</item> + <item>If E is <c><![CDATA[E_0#{W_1, ..., W_k}]]></c> where + <c><![CDATA[W_i]]></c> is a map assoc or exact field, then Rep(E) = + <c><![CDATA[{map,LINE,Rep(E_0),[Rep(W_1), ..., Rep(W_k)]}]]></c>. For + Rep(W), see below.</item> <item>If E is <c><![CDATA[catch E_0]]></c>, then Rep(E) = <c><![CDATA[{'catch',LINE,Rep(E_0)}]]></c>.</item> <item>If E is <c><![CDATA[E_0(E_1, ..., E_k)]]></c>, then @@ -334,6 +342,21 @@ is an integer, Rep(TS) = <c><![CDATA[{A, Value}]]></c>.</item> </list> </section> + + <section> + <title>Map assoc and exact fields</title> + <p>When W is an assoc or exact field (in the body of a map), then:</p> + <list type="bulleted"> + <item>If W is an assoc field <c><![CDATA[K => V]]></c>, where + <c><![CDATA[K]]></c> and <c><![CDATA[V]]></c> are both expressions, + then Rep(W) = <c><![CDATA[{map_field_assoc,LINE,Rep(K),Rep(V)}]]></c>. + </item> + <item>If W is an exact field <c><![CDATA[K := V]]></c>, where + <c><![CDATA[K]]></c> and <c><![CDATA[V]]></c> are both expressions, + then Rep(W) = <c><![CDATA[{map_field_exact,LINE,Rep(K),Rep(V)}]]></c>. + </item> + </list> + </section> </section> <section> |