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patch 7.4.1435

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Problem:    It is confusing that ch_sendexpr() and ch_sendraw() wait for a
            response.
Solution:   Add ch_evalexpr() and ch_evalraw().
This commit is contained in:
Bram Moolenaar
2016-02-27 19:21:24 +01:00
parent b6ff81188d
commit 8b1862a316
5 changed files with 179 additions and 69 deletions
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45
runtime/doc/eval.txt
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@@ -1818,6 +1818,10 @@ call( {func}, {arglist} [, {dict}])
any call {func} with arguments {arglist}
ceil( {expr}) Float round {expr} up
ch_close( {channel}) none close {channel}
ch_evalexpr( {channel}, {expr} [, {options}])
any evaluate {expr} on JSON {channel}
ch_evalraw( {channel}, {string} [, {options}])
any evaluate {string} on raw {channel}
ch_getjob( {channel}) Job get the Job of {channel}
ch_log( {msg} [, {channel}]) none write {msg} in the channel log file
ch_logfile( {fname} [, {mode}]) none start logging channel activity
@@ -2692,6 +2696,31 @@ ch_close({channel}) *ch_close()*
Close {channel}. See |channel-close|.
{only available when compiled with the |+channel| feature}
ch_evalexpr({channel}, {expr} [, {options}]) *ch_evalexpr()*
Send {expr} over {channel}. The {expr} is encoded
according to the type of channel. The function cannot be used
with a raw channel. See |channel-use|. *E912*
*E917*
{options} must be a Dictionary. It must not have a "callback"
entry.
ch_evalexpr() waits for a response and returns the decoded
expression. When there is an error or timeout it returns an
empty string.
{only available when compiled with the |+channel| feature}
ch_evalraw({channel}, {string} [, {options}]) *ch_evalraw()*
Send {string} over {channel}.
Works like |ch_evalexpr()|, but does not encode the request or
decode the response. The caller is responsible for the
correct contents. Also does not add a newline for a channel
in NL mode, the caller must do that. The NL in the response
is removed.
See |channel-use|.
{only available when compiled with the |+channel| feature}
ch_getjob({channel}) *ch_getjob()*
Get the Job associated with {channel}.
If there is no job calling |job_status()| on the returned Job
@@ -2769,16 +2798,11 @@ ch_sendexpr({channel}, {expr} [, {options}]) *ch_sendexpr()*
according to the type of channel. The function cannot be used
with a raw channel. See |channel-use|. *E912*
{options} must be a Dictionary.
When "callback" is a Funcref or the name of a function,
ch_sendexpr() returns immediately. The callback is invoked
when the response is received. See |channel-callback|.
Without "callback" ch_sendexpr() waits for a response and
returns the decoded expression. When there is an error or
timeout it returns an empty string.
When "callback" is zero no response is expected.
{options} must be a Dictionary. The "callback" item is a
Funcref or the name of a function it is invoked when the
response is received. See |channel-callback|.
Without "callback" the channel handler is invoked, otherwise
any received message is dropped.
{only available when compiled with the |+channel| feature}
@@ -7391,7 +7415,6 @@ scrollbind Compiled with 'scrollbind' support.
showcmd Compiled with 'showcmd' support.
signs Compiled with |:sign| support.
smartindent Compiled with 'smartindent' support.
sniff Compiled with SNiFF interface support.
spell Compiled with spell checking support |spell|.
startuptime Compiled with |--startuptime| support.
statusline Compiled with support for 'statusline', 'rulerformat'