patch 8.1.1996: more functions can be used as methods

Problem:    More functions can be used as methods.
Solution:   Make various functions usable as a method.

runtime/doc/eval.txt

@@ -1,4 +1,4 @@
-*eval.txt*	For Vim version 8.1.  Last change: 2019 Sep 04
+*eval.txt*	For Vim version 8.1.  Last change: 2019 Sep 06
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -3154,7 +3154,7 @@ bufadd({name})						*bufadd()*
 		number.  Otherwise return the buffer number of the newly
 		created buffer.  When {name} is an empty string then a new
 		buffer is always created.
-		The buffer will not have' 'buflisted' set and not be loaded
+		The buffer will not have 'buflisted' set and not be loaded
 		yet.  To add some text to the buffer use this: >
 			let bufnr = bufadd('someName')
 			call bufload(bufnr)
@@ -6465,7 +6465,7 @@ listener_add({callback} [, {buf}])			*listener_add()*
 		buffer is used.
 		Returns a unique ID that can be passed to |listener_remove()|.
 
-		The {callback} is invoked with four arguments:
+		The {callback} is invoked with five arguments:
 		    a:bufnr	the buffer that was changed
 		    a:start	first changed line number
 		    a:end	first line number below the change
@@ -8396,6 +8396,10 @@ setloclist({nr}, {list} [, {action} [, {what}]])		*setloclist()*
 		only the items listed in {what} are set. Refer to |setqflist()|
 		for the list of supported keys in {what}.
 
+		Can also be used as a |method|, the base is passed as the
+		second argument: >
+			GetLoclist()->setloclist(winnr)
+
 setmatches({list} [, {win}])				*setmatches()*
 		Restores a list of matches saved by |getmatches() for the
 		current window|.  Returns 0 if successful, otherwise -1.  All
@@ -8404,6 +8408,9 @@ setmatches({list} [, {win}])				*setmatches()*
 		If {win} is specified, use the window with this number or
 		window ID instead of the current window.
 
+		Can also be used as a |method|: >
+			GetMatches()->setmatches()
+<
 							*setpos()*
 setpos({expr}, {list})
 		Set the position for {expr}.  Possible values:
@@ -8453,6 +8460,9 @@ setpos({expr}, {list})
 		also set the preferred column.  Also see the "curswant" key in
 		|winrestview()|.
 
+		Can also be used as a |method|: >
+			GetPosition()->setpos('.')
+
 setqflist({list} [, {action} [, {what}]])		*setqflist()*
 		Create or replace or add to the quickfix list.
 
@@ -8554,7 +8564,10 @@ setqflist({list} [, {action} [, {what}]])		*setqflist()*
 		independent of the 'errorformat' setting.  Use a command like
 		`:cc 1` to jump to the first position.
 
-
+		Can also be used as a |method|, the base is passed as the
+		second argument: >
+			GetErrorlist()->setqflist()
+<
 							*setreg()*
 setreg({regname}, {value} [, {options}])
 		Set the register {regname} to {value}.
@@ -8602,6 +8615,10 @@ setreg({regname}, {value} [, {options}])
 		nothing: >
 			:call setreg('a', '', 'al')
 
+<		Can also be used as a |method|, the base is passed as the
+		second argument: >
+			GetText()->setreg('a')
+
 settabvar({tabnr}, {varname}, {val})			*settabvar()*
 		Set tab-local variable {varname} to {val} in tab page {tabnr}.
 		|t:var|
@@ -8611,6 +8628,9 @@ settabvar({tabnr}, {varname}, {val})			*settabvar()*
 		Tabs are numbered starting with one.
 		This function is not available in the |sandbox|.
 
+		Can also be used as a |method|, the base is used as the value: >
+			GetValue()->settabvar(tab, name)
+
 settabwinvar({tabnr}, {winnr}, {varname}, {val})	*settabwinvar()*
 		Set option or local variable {varname} in window {winnr} to
 		{val}.
@@ -8629,6 +8649,9 @@ settabwinvar({tabnr}, {winnr}, {varname}, {val})	*settabwinvar()*
 			:call settabwinvar(3, 2, "myvar", "foobar")
 <		This function is not available in the |sandbox|.
 
+		Can also be used as a |method|, the base is used as the value: >
+			GetValue()->settabvar(tab, winnr, name)
+
 settagstack({nr}, {dict} [, {action}])			*settagstack()*
 		Modify the tag stack of the window {nr} using {dict}.
 		{nr} can be the window number or the |window-ID|.
@@ -8660,16 +8683,26 @@ settagstack({nr}, {dict} [, {action}])			*settagstack()*
 			call settagstack(1003, stack)
 			unlet stack
 <
-setwinvar({nr}, {varname}, {val})			*setwinvar()*
+		Can also be used as a |method|, the base is used as the Dict: >
+			GetStack()->settagstack(winnr)
+
+setwinvar({winnr}, {varname}, {val})			*setwinvar()*
 		Like |settabwinvar()| for the current tab page.
 		Examples: >
 			:call setwinvar(1, "&list", 0)
 			:call setwinvar(2, "myvar", "foobar")
 
+<		Can also be used as a |method|, the base is used as the value: >
+			GetValue()->setwinvar(winnr, name)
+
 sha256({string})						*sha256()*
 		Returns a String with 64 hex characters, which is the SHA256
 		checksum of {string}.
-		{only available when compiled with the |+cryptv| feature}
+
+		Can also be used as a |method|: >
+			GetText()->sha256()
+
+<		{only available when compiled with the |+cryptv| feature}
 
 shellescape({string} [, {special}])			*shellescape()*
 		Escape {string} for use as a shell command argument.
@@ -8701,6 +8734,8 @@ shellescape({string} [, {special}])			*shellescape()*
 		    :call system("chmod +w -- " . shellescape(expand("%")))
 <		See also |::S|.
 
+		Can also be used as a |method|: >
+			GetCommand()->shellescape()
 
 shiftwidth([{col}])						*shiftwidth()*
 		Returns the effective value of 'shiftwidth'. This is the
@@ -8714,6 +8749,9 @@ shiftwidth([{col}])						*shiftwidth()*
 		'vartabstop' feature. If the 'vartabstop' setting is enabled and
 		no {col} argument is given, column 1 will be assumed.
 
+		Can also be used as a |method|: >
+			GetColumn()->shiftwidth()
+
 sign_ functions are documented here: |sign-functions-details|
 
 

src/evalfunc.c

@@ -336,6 +336,7 @@ typedef struct
 #define FEARG_1    1	    // base is the first argument
 #define FEARG_2    2	    // base is the second argument
 #define FEARG_3    3	    // base is the third argument
+#define FEARG_4    4	    // base is the fourth argument
 #define FEARG_LAST 9	    // base is the last argument
 
 static funcentry_T global_functions[] =
@@ -721,20 +722,20 @@ static funcentry_T global_functions[] =
     {"setenv",		2, 2, FEARG_2,	  f_setenv},
     {"setfperm",	2, 2, FEARG_1,	  f_setfperm},
     {"setline",		2, 2, FEARG_2,	  f_setline},
-    {"setloclist",	2, 4, 0,	  f_setloclist},
+    {"setloclist",	2, 4, FEARG_2,	  f_setloclist},
-    {"setmatches",	1, 2, 0,	  f_setmatches},
+    {"setmatches",	1, 2, FEARG_1,	  f_setmatches},
-    {"setpos",		2, 2, 0,	  f_setpos},
+    {"setpos",		2, 2, FEARG_2,	  f_setpos},
-    {"setqflist",	1, 3, 0,	  f_setqflist},
+    {"setqflist",	1, 3, FEARG_1,	  f_setqflist},
-    {"setreg",		2, 3, 0,	  f_setreg},
+    {"setreg",		2, 3, FEARG_2,	  f_setreg},
-    {"settabvar",	3, 3, 0,	  f_settabvar},
+    {"settabvar",	3, 3, FEARG_3,	  f_settabvar},
-    {"settabwinvar",	4, 4, 0,	  f_settabwinvar},
+    {"settabwinvar",	4, 4, FEARG_4,	  f_settabwinvar},
-    {"settagstack",	2, 3, 0,	  f_settagstack},
+    {"settagstack",	2, 3, FEARG_2,	  f_settagstack},
-    {"setwinvar",	3, 3, 0,	  f_setwinvar},
+    {"setwinvar",	3, 3, FEARG_3,	  f_setwinvar},
 #ifdef FEAT_CRYPT
-    {"sha256",		1, 1, 0,	  f_sha256},
+    {"sha256",		1, 1, FEARG_1,	  f_sha256},
 #endif
-    {"shellescape",	1, 2, 0,	  f_shellescape},
+    {"shellescape",	1, 2, FEARG_1,	  f_shellescape},
-    {"shiftwidth",	0, 1, 0,	  f_shiftwidth},
+    {"shiftwidth",	0, 1, FEARG_1,	  f_shiftwidth},
 #ifdef FEAT_SIGNS
     {"sign_define",	1, 2, FEARG_1,	  f_sign_define},
     {"sign_getdefined",	0, 1, FEARG_1,	  f_sign_getdefined},
@@ -1060,6 +1061,16 @@ call_internal_method(
 	for (i = 2; i < argcount; ++i)
 	    argv[i + 1] = argvars[i];
     }
+    else if (global_functions[fi].f_argtype == FEARG_4)
+    {
+	// base value goes fourth
+	argv[0] = argvars[0];
+	argv[1] = argvars[1];
+	argv[2] = argvars[2];
+	argv[3] = *basetv;
+	for (i = 3; i < argcount; ++i)
+	    argv[i + 1] = argvars[i];
+    }
     else
     {
 	// FEARG_1: base value goes first

src/testdir/test_bufwintabinfo.vim

@@ -47,7 +47,7 @@ function Test_getbufwintabinfo()
     tabnew | let w3_id = win_getid()
     new | let w4_id = win_getid()
     vert new | let w5_id = win_getid()
-    call setwinvar(0, 'signal', 'green')
+    eval 'green'->setwinvar(0, 'signal')
     tabfirst
     let winlist = getwininfo()
     call assert_equal(5, len(winlist))

src/testdir/test_cursor_func.vim

@@ -37,7 +37,7 @@ endfunc
 " Very short version of what matchparen does.
 function s:Highlight_Matching_Pair()
   let save_cursor = getcurpos()
-  call setpos('.', save_cursor)
+  eval save_cursor->setpos('.')
 endfunc
 
 func Test_curswant_with_autocommand()

src/testdir/test_expr.vim

@@ -504,7 +504,7 @@ func Test_setmatches()
     let set[0]['conceal'] = 5
     let exp[0]['conceal'] = '5'
   endif
-  call setmatches(set)
+  eval set->setmatches()
   call assert_equal(exp, getmatches())
 endfunc
 

src/testdir/test_functions.vim

@@ -1180,7 +1180,7 @@ func Test_shellescape()
   let save_shell = &shell
   set shell=bash
   call assert_equal("'text'", shellescape('text'))
-  call assert_equal("'te\"xt'", shellescape('te"xt'))
+  call assert_equal("'te\"xt'", 'te"xt'->shellescape())
   call assert_equal("'te'\\''xt'", shellescape("te'xt"))
 
   call assert_equal("'te%xt'", shellescape("te%xt"))

src/testdir/test_put.vim

@@ -41,7 +41,7 @@ func Test_put_lines()
   call assert_equal(['Line 3', '', 'Line 1', 'Line2'], getline(1,'$'))
   " clean up
   bw!
-  call setreg('a', a[0], a[1])
+  eval a[0]->setreg('a', a[1])
 endfunc
 
 func Test_put_expr()

src/testdir/test_quickfix.vim

@@ -711,7 +711,7 @@ func Test_locationlist()
       " NOTE: problem 1:
       " intentionally not setting 'lnum' so that the quickfix entries are not
       " valid
-      call setloclist(0, qflist, ' ')
+      eval qflist->setloclist(0, ' ')
     endfor
 
     " Test A
@@ -1515,7 +1515,7 @@ endfunc
 
 func Test_setqflist_invalid_nr()
   " The following command used to crash Vim
-  call setqflist([], ' ', {'nr' : $XXX_DOES_NOT_EXIST})
+  eval []->setqflist(' ', {'nr' : $XXX_DOES_NOT_EXIST})
 endfunc
 
 func Test_quickfix_set_list_with_act()

src/testdir/test_sha256.vim

@@ -6,17 +6,17 @@ CheckFunction sha256
 
 function Test_sha256()
   " test for empty string:
-  call assert_equal(sha256(""), 'e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855')
+  call assert_equal('e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855', sha256(""))
 
   "'test for 1 char:
-  call assert_equal(sha256("a"), 'ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb')
+  call assert_equal('ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb', sha256("a"))
   "
   "test for 3 chars:
-  call assert_equal(sha256("abc"), 'ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad')
+  call assert_equal('ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad', "abc"->sha256())
 
   " test for contains meta char:
-  call assert_equal(sha256("foo\nbar"), '807eff6267f3f926a21d234f7b0cf867a86f47e07a532f15e8cc39ed110ca776')
+  call assert_equal('807eff6267f3f926a21d234f7b0cf867a86f47e07a532f15e8cc39ed110ca776', sha256("foo\nbar"))
 
   " test for contains non-ascii char:
-  call assert_equal(sha256("\xde\xad\xbe\xef"), '5f78c33274e43fa9de5659265c1d917e25c03722dcb0b8d27db8d5feaa813953')
+  call assert_equal('5f78c33274e43fa9de5659265c1d917e25c03722dcb0b8d27db8d5feaa813953', sha256("\xde\xad\xbe\xef"))
 endfunction

src/testdir/test_tabpage.vim

@@ -34,7 +34,7 @@ function Test_tabpage()
   tabnew
   tabfirst
   call settabvar(2, 'val_num', 100)
-  call settabvar(2, 'val_str', 'SetTabVar test')
+  eval 'SetTabVar test'->settabvar(2, 'val_str')
   call settabvar(2, 'val_list', ['red', 'blue', 'green'])
   "
   call assert_true(gettabvar(2, 'val_num') == 100 && gettabvar(2, 'val_str') == 'SetTabVar test' && gettabvar(2, 'val_list') == ['red', 'blue', 'green'])
@@ -183,7 +183,7 @@ function Test_tabpage_with_autocmd()
   let s:li = split(join(map(copy(winr), 'gettabwinvar('.tabn.', v:val, "a")')), '\s\+')
   call assert_equal(['a', 'a'], s:li)
   let s:li = []
-  C call map(copy(winr), 'settabwinvar('.tabn.', v:val, ''a'', v:val*2)')
+  C call map(copy(winr), '(v:val*2)->settabwinvar(' .. tabn .. ', v:val, ''a'')')
   let s:li = split(join(map(copy(winr), 'gettabwinvar('.tabn.', v:val, "a")')), '\s\+')
   call assert_equal(['2', '4'], s:li)
 

src/testdir/test_tagjump.vim

@@ -303,7 +303,7 @@ func Test_getsettagstack()
   " Try to set current index to invalid values
   call settagstack(1, {'curidx' : -1})
   call assert_equal(1, gettagstack().curidx)
-  call settagstack(1, {'curidx' : 50})
+  eval {'curidx' : 50}->settagstack(1)
   call assert_equal(4, gettagstack().curidx)
 
   " Try pushing invalid items onto the stack

src/testdir/test_vartabs.vim

@@ -329,7 +329,7 @@ func Test_vartabs_shiftwidth()
   let lines = ScreenLines([1, 2], winwidth(0))
   call s:compare_lines(expect2, lines)
   call assert_equal(20, shiftwidth(virtcol('.')-2))
-  call assert_equal(30, shiftwidth(virtcol('.')))
+  call assert_equal(30, virtcol('.')->shiftwidth())
   norm! $>>
   let expect3 = ['                                        ', '                    x                   ', '~                                       ']
   let lines = ScreenLines([1, 3], winwidth(0))

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1996,
 /**/
     1995,
 /**/