diff options
Diffstat (limited to 'lib/asn1/doc/src')
| -rw-r--r-- | lib/asn1/doc/src/Makefile | 3 | ||||
| -rw-r--r-- | lib/asn1/doc/src/asn1_getting_started.xml | 77 | ||||
| -rw-r--r-- | lib/asn1/doc/src/asn1ct.xml | 62 | ||||
| -rw-r--r-- | lib/asn1/doc/src/asn1rt.xml | 135 |
4 files changed, 88 insertions, 189 deletions
diff --git a/lib/asn1/doc/src/Makefile b/lib/asn1/doc/src/Makefile index 559836116f..9a388e4e8a 100644 --- a/lib/asn1/doc/src/Makefile +++ b/lib/asn1/doc/src/Makefile @@ -37,8 +37,7 @@ RELSYSDIR = $(RELEASE_PATH)/lib/$(APPLICATION)-$(VSN) # Target Specs # ---------------------------------------------------- XML_APPLICATION_FILES = ref_man.xml -XML_REF3_FILES = asn1ct.xml \ - asn1rt.xml +XML_REF3_FILES = asn1ct.xml GEN_XML = \ asn1_spec.xml diff --git a/lib/asn1/doc/src/asn1_getting_started.xml b/lib/asn1/doc/src/asn1_getting_started.xml index d40b294c39..d2b73d63c3 100644 --- a/lib/asn1/doc/src/asn1_getting_started.xml +++ b/lib/asn1/doc/src/asn1_getting_started.xml @@ -187,6 +187,14 @@ erlc -o ../asnfiles -I ../asnfiles -I /usr/local/standards/asn1 Person.asn</pre> <item> <p>DER encoding rule. Only when using option <c>-ber</c>.</p> </item> + <tag><c>+maps</c></tag> + <item> + <p>Use maps instead of records to represent the <c>SEQUENCE</c> and + <c>SET</c> types. No <c>.hrl</c> files will be generated. + See the Section <seealso marker="asn1_getting_started#MAP_SEQ_SET"> + Map representation for SEQUENCE and SET</seealso> + for more information.</p> + </item> <tag><c>+asn1config</c></tag> <item> <p>This functionality works together with option @@ -766,8 +774,11 @@ Pdu ::= SEQUENCE { b REAL, c OBJECT IDENTIFIER, d NULL } </pre> - <p>This is a 4-component structure called <c>Pdu</c>. The record format - is the major format for representation of <c>SEQUENCE</c> in Erlang. + <p>This is a 4-component structure called <c>Pdu</c>. By default, + a <c>SEQUENCE</c> is represented by a record in Erlang. + It can also be represented as a map; see + <seealso marker="asn1_getting_started#MAP_SEQ_SET"> + Map representation for SEQUENCE and SET</seealso>. For each <c>SEQUENCE</c> and <c>SET</c> in an ASN.1 module an Erlang record declaration is generated. For <c>Pdu</c>, a record like the following is defined:</p> @@ -878,6 +889,48 @@ SExt ::= SEQUENCE { </section> <section> + <marker id="MAP_SEQ_SET"></marker> + <title>Map representation for SEQUENCE and SET</title> + <p>If the ASN.1 module has been compiled with option <c>maps</c>, + the types <c>SEQUENCE</c> and <c>SET</c> are represented as maps.</p> + <p>In the following example, this ASN.1 specification is used:</p> + <pre> +File DEFINITIONS AUTOMATIC TAGS ::= +BEGIN +Seq1 ::= SEQUENCE { + a INTEGER DEFAULT 42, + b BOOLEAN OPTIONAL, + c IA5String +} +END </pre> + + <p>Optional fields are to be omitted from the map if they have + no value:</p> + + <pre> +1> <input>asn1ct:compile('File', [per,maps]).</input> +ok +2> <input>{ok,E} = 'File':encode('Seq1', #{a=>0,c=>"string"}).</input> +{ok,<<128,1,0,6,115,116,114,105,110,103>>} </pre> + + <p>When decoding, optional fields will be omitted from the map:</p> + + <pre> +3> <input>'File':decode('Seq1', E).</input> +{ok,#{a => 0,c => "string"}} </pre> + + <p>Default values can be omitted from the map:</p> + <pre> +4> <input>{ok,E2} = 'File':encode('Seq1', #{c=>"string"}).</input> +{ok,<<0,6,115,116,114,105,110,103>>} +5> <input>'File':decode('Seq1', E2).</input> +{ok,#{a => 42,c => "string"}} </pre> + + <note><p>It is not allowed to use the atoms <c>asn1_VALUE</c> and + <c>asn1_DEFAULT</c> with maps.</p></note> + </section> + + <section> <marker id="CHOICE"></marker> <title>CHOICE</title> <p>The type <c>CHOICE</c> is a space saver and is similar to the @@ -1004,11 +1057,16 @@ T ::= CHOICE { <section> <title>Naming of Records in .hrl Files</title> + <p>When the option <c>maps</c> is given, no <c>.hrl</c> files + will be generated. The rest of this section describes the behavior + of the compiler when <c>maps</c> is not used.</p> + <p>When an ASN.1 specification is compiled, all defined types of type - <c>SET</c> or <c>SEQUENCE</c> result in a corresponding record in the - generated <c>.hrl</c> file. This is because the values for - <c>SET</c> and <c>SEQUENCE</c> are represented as records as - mentioned earlier.</p> + <c>SET</c> or <c>SEQUENCE</c> result in a corresponding record in the + generated <c>.hrl</c> file. This is because the values for + <c>SET</c> and <c>SEQUENCE</c> are represented as records + by default.</p> + <p>Some special cases of this functionality are presented in the next section.</p> @@ -1144,9 +1202,10 @@ SS ::= SET { <p>This example shows that a function is generated by the compiler that returns a valid Erlang representation of the value, although the value is of a complex type.</p> - <p>Furthermore, a macro is generated for each value in the <c>.hrl</c> - file. So, the defined value <c>tt</c> can also be extracted by - <c>?tt</c> in application code.</p> + <p>Furthermore, if the option <c>maps</c> is not used, + a macro is generated for each value in the <c>.hrl</c> + file. So, the defined value <c>tt</c> can also be extracted by + <c>?tt</c> in application code.</p> </section> <section> diff --git a/lib/asn1/doc/src/asn1ct.xml b/lib/asn1/doc/src/asn1ct.xml index e5a7b1bcc4..859d6a50bb 100644 --- a/lib/asn1/doc/src/asn1ct.xml +++ b/lib/asn1/doc/src/asn1ct.xml @@ -170,11 +170,24 @@ File3.asn</pre> as for <c>ber</c>. </p> </item> + <tag><c>maps</c></tag> + <item> + <p>This option changes the representation of the types + <c>SEQUENCE</c> and <c>SET</c> to use maps (instead of + records). This option also suppresses the generation of + <c>.hrl</c> files.</p> + <p>For details, see Section + <seealso marker="asn1_getting_started#MAP_SEQ_SET"> + Map representation for SEQUENCE and SET</seealso> + in the User's Guide. + </p> + </item> <tag><c>compact_bit_string</c></tag> <item> <p> The <c>BIT STRING</c> type is decoded to "compact notation". <em>This option is not recommended for new code.</em> + This option cannot be combined with the option <c>maps</c>. </p> <p>For details, see Section <seealso marker="asn1_getting_started#BIT STRING"> @@ -188,6 +201,7 @@ File3.asn</pre> The <c>BIT STRING</c> type is decoded to the legacy format, that is, a list of zeroes and ones. <em>This option is not recommended for new code.</em> + This option cannot be combined with the option <c>maps</c>. </p> <p>For details, see Section <seealso marker="asn1_getting_started#BIT STRING">BIT STRING</seealso> @@ -202,7 +216,8 @@ File3.asn</pre> marker="asn1_getting_started#BIT STRING">BIT STRING</seealso> and Section <seealso marker="asn1_getting_started#OCTET STRING">OCTET STRING</seealso> in the User's Guide.</p> - <p><em>This option is not recommended for new code.</em></p> + <p><em>This option is not recommended for new code.</em> + This option cannot be combined with the option <c>maps</c>.</p> </item> <tag><c>{n2n, EnumTypeName}</c></tag> <item> @@ -321,45 +336,6 @@ File3.asn</pre> </func> <func> - <name>encode(Module, Type, Value)-> {ok, Bytes} | {error, Reason}</name> - <fsummary>Encodes an ASN.1 value.</fsummary> - <type> - <v>Module = Type = atom()</v> - <v>Value = term()</v> - <v>Bytes = binary()</v> - <v>Reason = term()</v> - </type> - <desc> - <p>Encodes <c>Value</c> of <c>Type</c> defined in the <c>ASN.1</c> module - <c>Module</c>. To get as fast execution as possible, the - encode function performs only the rudimentary tests that input - <c>Value</c> is a correct instance of <c>Type</c>. So, for example, - the length of strings is - not always checked. Returns <c>{ok, Bytes}</c> if successful or - <c>{error, Reason}</c> if an error occurred. - </p> - <p>This function is deprecated. - Use <c>Module:encode(Type, Value)</c> instead.</p> - </desc> - </func> - - <func> - <name>decode(Module, Type, Bytes) -> {ok, Value} | {error, Reason}</name> - <fsummary>Decode from Bytes into an ASN.1 value.</fsummary> - <type> - <v>Module = Type = atom()</v> - <v>Value = Reason = term()</v> - <v>Bytes = binary()</v> - </type> - <desc> - <p>Decodes <c>Type</c> from <c>Module</c> from the binary - <c>Bytes</c>. Returns <c>{ok, Value}</c> if successful.</p> - <p>This function is deprecated. - Use <c>Module:decode(Type, Bytes)</c> instead.</p> - </desc> - </func> - - <func> <name>value(Module, Type) -> {ok, Value} | {error, Reason}</name> <fsummary>Creates an ASN.1 value for test purposes.</fsummary> <type> @@ -424,11 +400,11 @@ File3.asn</pre> <p>Schematically, the following occurs for each type in the module:</p> <code type="none"> {ok, Value} = asn1ct:value(Module, Type), -{ok, Bytes} = asn1ct:encode(Module, Type, Value), -{ok, Value} = asn1ct:decode(Module, Type, Bytes).</code> +{ok, Bytes} = Module:encode(Type, Value), +{ok, Value} = Module:decode(Type, Bytes).</code> <p>The <c>test</c> functions use the <c>*.asn1db</c> files for all included modules. If they are located in a different - directory than the current working directory, use the include + directory than the current working directory, use the <c>include</c> option to add paths. This is only needed when automatically generating values. For static values using <c>Value</c> no options are needed.</p> diff --git a/lib/asn1/doc/src/asn1rt.xml b/lib/asn1/doc/src/asn1rt.xml deleted file mode 100644 index 3f53ca0f56..0000000000 --- a/lib/asn1/doc/src/asn1rt.xml +++ /dev/null @@ -1,135 +0,0 @@ -<?xml version="1.0" encoding="utf-8" ?> -<!DOCTYPE erlref SYSTEM "erlref.dtd"> - -<erlref> - <header> - <copyright> - <year>1997</year><year>2016</year> - <holder>Ericsson AB. All Rights Reserved.</holder> - </copyright> - <legalnotice> - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. - - </legalnotice> - - <title>asn1rt</title> - <prepared>Kenneth Lundin</prepared> - <responsible>Kenneth Lundin</responsible> - <docno>1</docno> - <approved>Kenneth Lundin</approved> - <checked></checked> - <date>97-10-04</date> - <rev>A</rev> - <file>asn1.sgml</file> - </header> - <module>asn1rt</module> - <modulesummary>ASN.1 runtime support functions</modulesummary> - <description> - <warning> - <p> - All functions in this module are deprecated and will be - removed in a future release. - </p> - </warning> - </description> - - <funcs> - - <func> - <name>decode(Module,Type,Bytes) -> {ok,Value}|{error,Reason}</name> - <fsummary>Decodes from Bytes into an ASN.1 value.</fsummary> - <type> - <v>Module = Type = atom()</v> - <v>Value = Reason = term()</v> - <v>Bytes = binary</v> - </type> - <desc> - <p>Decodes <c>Type</c> from <c>Module</c> from the binary <c>Bytes</c>. - Returns <c>{ok,Value}</c> if successful.</p> - <p>Use <c>Module:decode(Type, Bytes)</c> instead of this function.</p> - </desc> - </func> - - <func> - <name>encode(Module,Type,Value)-> {ok,Bytes} | {error,Reason}</name> - <fsummary>Encodes an ASN.1 value.</fsummary> - <type> - <v>Module = Type = atom()</v> - <v>Value = term()</v> - <v>Bytes = binary</v> - <v>Reason = term()</v> - </type> - <desc> - <p>Encodes <c>Value</c> of <c>Type</c> defined in the <c>ASN.1</c> - module <c>Module</c>. Returns a binary if successful. To get - as fast execution as possible, the encode function performs - only the rudimentary test that input <c>Value</c> is a correct - instance of <c>Type</c>. For example, the length of strings is - not always checked.</p> - <p>Use <c>Module:encode(Type, Value)</c> instead of this function.</p> - </desc> - </func> - - <func> - <name>info(Module) -> {ok,Info} | {error,Reason}</name> - <fsummary>Returns compiler information about the Module.</fsummary> - <type> - <v>Module = atom()</v> - <v>Info = list()</v> - <v>Reason = term()</v> - </type> - <desc> - <p>Returns the version of the <c>ASN.1</c> compiler that was - used to compile the module. It also returns the compiler options - that were used.</p> - <p>Use <c>Module:info()</c> instead of this function.</p> - </desc> - </func> - - <func> - <name>utf8_binary_to_list(UTF8Binary) -> {ok,UnicodeList} | {error,Reason}</name> - <fsummary>Transforms an UTF8 encoded binary to a unicode list.</fsummary> - <type> - <v>UTF8Binary = binary()</v> - <v>UnicodeList = [integer()]</v> - <v>Reason = term()</v> - </type> - <desc> - <p>Transforms a UTF8 encoded binary - to a list of integers, where each integer represents one - character as its unicode value. The function fails if the binary - is not a properly encoded UTF8 string.</p> - <p>Use <seealso marker="stdlib:unicode#characters_to_list-1">unicode:characters_to_list/1</seealso> instead of this function.</p> - </desc> - </func> - - <func> - <name>utf8_list_to_binary(UnicodeList) -> {ok,UTF8Binary} | {error,Reason}</name> - <fsummary>Transforms an unicode list to a UTF8 binary.</fsummary> - <type> - <v>UnicodeList = [integer()]</v> - <v>UTF8Binary = binary()</v> - <v>Reason = term()</v> - </type> - <desc> - <p>Transforms a list of integers, - where each integer represents one character as its unicode - value, to a UTF8 encoded binary.</p> - <p>Use <seealso marker="stdlib:unicode#characters_to_binary-1">unicode:characters_to_binary/1</seealso> instead of this function.</p> - </desc> - </func> - - </funcs> - -</erlref> - |