runtime(termdebug): improve window handling, shorten var types

closes #13474

Signed-off-by: shane.xb.qian <shane.qian@foxmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

runtime/doc/terminal.txt

@@ -1487,7 +1487,10 @@ If you want the Asm window shown by default, set the "disasm_window" flag to
 	let g:termdebug_config['disasm_window_height'] = 15
 If there is no g:termdebug_config you can use: >
 	let g:termdebug_disasm_window = 15
-Any value greater than 1 will set the Asm window height to that value.
+Any value greater than 1 will set the Asm window height to that value.  
+If the current window has enough horizontal space, it will be vertically split
+and the Asm window will be shown side by side with the source code window (and
+the height option won't be used).
 
 						*termdebug_variables_window*
 If you want the Var window shown by default, set the "variables_window" flag
@@ -1498,6 +1501,9 @@ height: >
 If there is no g:termdebug_config you can use: >
 	let g:termdebug_variables_window = 15
 Any value greater than 1 will set the Var window height to that value.
+If the current window has enough horizontal space, it will be vertically split
+and the Var window will be shown side by side with the source code window (and
+the height options won't be used).
 
 Communication ~
 						*termdebug-communication*

runtime/pack/dist/opt/termdebug/plugin/termdebug.vim

@@ -859,7 +859,9 @@ func s:ParseVarinfo(varinfo)
   let nameIdx = matchstrpos(a:varinfo, '{name="\([^"]*\)"')
   let dict['name'] = a:varinfo[nameIdx[1] + 7 : nameIdx[2] - 2]
   let typeIdx = matchstrpos(a:varinfo, ',type="\([^"]*\)"')
-  let dict['type'] = a:varinfo[typeIdx[1] + 7 : typeIdx[2] - 2]
+  " 'type' maybe is a url-like string,
+  " try to shorten it and show only the /tail
+  let dict['type'] = (a:varinfo[typeIdx[1] + 7 : typeIdx[2] - 2])->fnamemodify(':t')
   let valueIdx = matchstrpos(a:varinfo, ',value="\(.*\)"}')
   if valueIdx[1] == -1
     let dict['value'] = 'Complex value'
@@ -1429,8 +1431,15 @@ endfunc
 
 func s:GotoAsmwinOrCreateIt()
   if !win_gotoid(s:asmwin)
+    let mdf = ''
     if win_gotoid(s:sourcewin)
-      exe 'rightbelow new'
+      " 60 is approx spaceBuffer * 3
+      if winwidth(0) > (78 + 60)
+        let mdf = 'vert'
+        exe mdf .. ' ' .. 60 .. 'new'
+      else
+        exe 'rightbelow new'
+      endif
     else
       exe 'new'
     endif
@@ -1452,7 +1461,7 @@ func s:GotoAsmwinOrCreateIt()
       let s:asmbuf = bufnr('Termdebug-asm-listing')
     endif
 
-    if s:GetDisasmWindowHeight() > 0
+    if mdf != 'vert' && s:GetDisasmWindowHeight() > 0
       exe 'resize ' .. s:GetDisasmWindowHeight()
     endif
   endif
@@ -1492,8 +1501,15 @@ endfunc
 
 func s:GotoVariableswinOrCreateIt()
   if !win_gotoid(s:varwin)
+    let mdf = ''
     if win_gotoid(s:sourcewin)
-      exe 'rightbelow new'
+      " 60 is approx spaceBuffer * 3
+      if winwidth(0) > (78 + 60)
+        let mdf = 'vert'
+        exe mdf .. ' ' .. 60 .. 'new'
+      else
+        exe 'rightbelow new'
+      endif
     else
       exe 'new'
     endif
@@ -1514,7 +1530,7 @@ func s:GotoVariableswinOrCreateIt()
       let s:varbuf = bufnr('Termdebug-variables-listing')
     endif
 
-    if s:GetVariablesWindowHeight() > 0
+    if mdf != 'vert' && s:GetVariablesWindowHeight() > 0
       exe 'resize ' .. s:GetVariablesWindowHeight()
     endif
   endif

src/testdir/test_termdebug.vim

@@ -80,6 +80,34 @@ func Test_termdebug_basic()
         \  'priority': 110, 'group': 'TermDebug'}],
         \ sign_getplaced('', #{group: 'TermDebug'})[0].signs)})
   Continue
+
+  let cn = 0
+  " 60 is approx spaceBuffer * 3
+  if winwidth(0) <= 78 + 60
+    Var
+    call assert_equal(winnr(), winnr('$'))
+    call assert_equal(winlayout(), ['col', [['leaf', 1002], ['leaf', 1001], ['leaf', 1000], ['leaf', 1003 + cn]]])
+    let cn += 1
+    bw!
+    Asm
+    call assert_equal(winnr(), winnr('$'))
+    call assert_equal(winlayout(), ['col', [['leaf', 1002], ['leaf', 1001], ['leaf', 1000], ['leaf', 1003 + cn]]])
+    let cn += 1
+    bw!
+  endif
+  set columns=160
+  Var
+  call assert_equal(winnr(), winnr('$') - 1)
+  call assert_equal(winlayout(), ['col', [['leaf', 1002], ['leaf', 1001], ['row', [['leaf', 1003 + cn], ['leaf', 1000]]]]])
+  let cn += 1
+  bw!
+  Asm
+  call assert_equal(winnr(), winnr('$') - 1)
+  call assert_equal(winlayout(), ['col', [['leaf', 1002], ['leaf', 1001], ['row', [['leaf', 1003 + cn], ['leaf', 1000]]]]])
+  let cn += 1
+  bw!
+  set columns&
+
   wincmd t
   quit!
   redraw!