add elixirFunctionCall

Implementation from #506 cc: Thanks @w-sanches

Author: jbodah

spec/syntax/alias_spec.rb

@@ -7,7 +7,7 @@
  str = "Enum.empty?(...)"
  expect(str).to include_elixir_syntax('elixirAlias', 'Enum')
  expect(str).to include_elixir_syntax('elixirOperator', '\.')
- expect(str).to include_elixir_syntax('elixirId', 'empty?')
+ expect(str).to include_elixir_syntax('elixirFunctionCall', 'empty?')
  end
 
  it 'colorize the module alias even if it starts with `!`' do
@@ -43,6 +43,6 @@
  expect(str).to include_elixir_syntax('elixirAlias', '\.\(Baz\)\@=')
  expect(str).to include_elixir_syntax('elixirAlias', 'Baz')
  expect(str).to include_elixir_syntax('elixirOperator', '\.\(fun\)\@=')
- expect(str).to include_elixir_syntax('elixirId', 'fun')
+ expect(str).to include_elixir_syntax('elixirFunctionCall', 'fun')
  end
 end

spec/syntax/function_spec.rb

@@ -5,7 +5,7 @@
 
 describe 'function syntax' do
  it 'doesnt treat underscored functions like unsued variables' do
- expect(<<~EOF).to include_elixir_syntax('elixirId', '__ensure_defimpl__')
+ expect(<<~EOF).to include_elixir_syntax('elixirFunctionCall', '__ensure_defimpl__')
  defp derive(protocol, for, struct, opts, env) do
  # ... code ...
  __ensure_defimpl__(protocol, for, env)
@@ -17,4 +17,114 @@
  __ensure_defimpl__(protocol, for, env)
  EOF
  end
+
+ it 'matches top-level macros as elixirKeyword' do
+ expect(<<~EOF).to include_elixir_syntax('elixirKeyword', 'quote')
+ quote do
+ # ... code ...
+ end
+ EOF
+
+ expect(<<~EOF).to include_elixir_syntax('elixirKeyword', 'quote')
+ quote(do: '')
+ EOF
+ end
+
+ it 'detects higher order function calls' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ func.()
+ EOF
+ end
+
+ it 'detects function calls with parenthesis' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ func()
+ EOF
+ end
+
+ it 'detects function calls with bangs' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func!')
+ func!()
+ EOF
+ end
+
+ it 'detects function calls with question marks' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func?')
+ func?()
+ EOF
+ end
+
+ it 'detects function calls appended by module with parenthesis' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ Mod.func()
+ EOF
+ end
+
+ it 'detects function calls appended by atom with parenthesis' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ :mod.func()
+ EOF
+ end
+
+ it 'detects function calls appended by module without parenthesis' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ Mod.func
+ EOF
+ end
+
+ it 'detects function calls appended by atom without parenthesis' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ :mod.func
+ EOF
+ end
+
+ it 'detects function calls without parenthesis that contain paramenters' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ func 1
+ EOF
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ func [1]
+ EOF
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ func :atom
+ EOF
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ func "string"
+ EOF
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ func 'a'
+ EOF
+ end
+
+ it 'does not highlight function calls without parenthesis that does not contain paramenters' do
+ expect(<<~'EOF').not_to include_elixir_syntax('elixirFunctionCall', 'func')
+ func
+ EOF
+ end
+
+ it 'does not detect calls to function with invalid names' do
+ expect(<<~'EOF').not_to include_elixir_syntax('elixirFunctionCall', '2fast2func')
+ 2fast2func()
+ EOF
+ end
+
+ it 'ignores spacing between module and function names' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ Module . func
+ EOF
+ end
+
+ it 'detects piped functions with parenthesis' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ one_func()
+ |> func()
+ EOF
+ end
+
+ it 'detects piped functions without parenthesis' do
+ expect(<<~'EOF').to include_elixir_syntax('elixirFunctionCall', 'func')
+ one_func()
+ |> func
+ EOF
+ end
 end

spec/syntax/module_function_spec.rb

@@ -4,13 +4,13 @@
 
 describe 'Module function syntax' do
  it 'for used as module function' do
- expect(<<~EOF).to include_elixir_syntax('elixirId', 'for')
+ expect(<<~EOF).to include_elixir_syntax('elixirFunctionCall', 'for')
  OverridesDefault.for
  EOF
  end
 
  it 'case used as module function' do
- expect(<<~EOF).to include_elixir_syntax('elixirId', 'case')
+ expect(<<~EOF).to include_elixir_syntax('elixirFunctionCall', 'case')
  OverridesDefault.case
  EOF
  end

syntax/elixir.vim

@@ -18,6 +18,10 @@ syn keyword elixirTodo FIXME NOTE TODO OPTIMIZE XXX HACK contained
 
 syn match elixirId '\<[_a-zA-Z]\w*[!?]\?\>' contains=elixirUnusedVariable
 
+syn match elixirFunctionCall '\<[a-z_]\w*[!?]\?\(\s*\.\?\s*(\|\s\+[a-zA-Z0-9@:\'\"\[]\)\@='
+syn match elixirFunctionCall '\(:\w\+\s*\.\s*\|[A-Z]\w*\s*\.\s*\)\@<=[a-z_]\w*[!?]\?'
+syn match elixirFunctionCall '\(>\s+\)\<[a-z_]\w*[!?]\?'
+
 syn match elixirKeyword '\(\.\)\@<!\<\(for\|case\|when\|with\|cond\|if\|unless\|try\|receive\|after\|raise\|rescue\|catch\|else\|quote\|unquote\|super\|unquote_splicing\)\>:\@!'
 
 syn keyword elixirInclude import require alias use