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authorKarel Kočí <cynerd@email.cz>2016-06-30 16:03:25 +0200
committerKarel Kočí <cynerd@email.cz>2016-06-30 16:03:25 +0200
commite573b3020c032400eed60b649a2cbf55266e6bb0 (patch)
tree8f572394ac8433529c7a8e70d160a2fbe8268b4e /vim/bundle/vim-snipmate/t/parser.vim
parentb8c667bd64b3edd38d56c63c5bd1db53a23b4499 (diff)
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+describe 'snippet parser'
+
+ before
+ function! Parse(snippet, ...)
+ let [snip, stops] = snipmate#parse#snippet(a:snippet, (a:0 ? a:1 : 1))
+ return (a:0 > 1 && a:2) ? [snip, stops] : snip
+ endfunction
+ let b:snipmate_visual = 'testvisual'
+ end
+
+ it 'parses numeric $id and ${id} vars as [id] lists'
+ let expect = [[[1234567890]]]
+ Expect Parse('$1234567890') == expect
+ Expect Parse('${1234567890}') == expect
+ end
+
+ it 'disregards $ or ${ followed by a non-id'
+ Expect Parse('$x1') == [['x1']]
+ Expect Parse('${x}1') == [['x}1']]
+ Expect Parse('$VISUA1') == [['VISUA1']]
+ Expect Parse('${VISUA}1') == [['VISUA}1']]
+ end
+
+ it 'gathers references to each instance of each stop id'
+ let [snip, b:stops] = Parse('x$1x${2:x$1x}x$1x${1/a/b}x$VISUALx', 1, 1)
+ function! InstanceFound(list)
+ return !empty(filter(copy(b:stops[a:list[0]].instances),
+ \ 'v:val is a:list'))
+ endfunction
+ function! CheckList(list)
+ for item in a:list
+ if type(item) == type([])
+ Expect InstanceFound(item) to_be_true
+ call CheckList(item)
+ endif
+ unlet item " E732
+ endfor
+ endfunction
+ call CheckList(snip[0])
+ end
+
+ it 'parses mirror substitutions ${n/pat/sub} as [n, {...}]'
+ let expect = [[[1, { 'pat' : 'abc', 'sub' : 'def' }]]]
+ Expect Parse('${1/abc/def}') == expect
+ let expect[0][0][1].flags = ''
+ Expect Parse('${1/abc/def/}') == expect
+ let expect[0][0][1].flags = 'g'
+ Expect Parse('${1/abc/def/g}') == expect
+ end
+
+ it 'reads patterns literally except for "\/"'
+ Expect Parse('${1/\a\/b/\c\/d\}}') == [[[1, { 'pat' : '\a/b', 'sub' : '\c/d}' }]]]
+ end
+
+ it 'parses vars with placeholders as [id, placeholder] lists'
+ Expect Parse('${1:abc}') == [[[1, 'abc']]]
+ end
+
+ it 'evaluates backtick expressions'
+ Expect Parse('`fnamemodify("x.y", ":r")`') == [['x']]
+ end
+
+ it 'parses placeholders for vars and other specials'
+ let text = 'a `fnamemodify("x.y", ":r")` ${2:(${3/a/b})}'
+ let expect = ['a x ', [2, '(', [3, { 'pat' : 'a', 'sub' : 'b' }], ')']]
+ Expect Parse(text) == [expect]
+ Expect Parse(printf('${1:%s}', text)) == [[[1] + expect]]
+ end
+
+ it 'converts tabs according to &et, &sts, &sw, &ts'
+ " &noet -> leave tabs alone
+ setl noet
+ Expect Parse("abc\tdef\n\t\tghi") == [["abc\tdef"], ["\t\tghi"]]
+
+ " &et -> &sts or &sw
+ setl et sts=2 sw=3
+ Expect Parse("abc\tdef\n\t\tghi") == [["abc def"], [" ghi"]]
+
+ setl et sts=0 sw=3
+ Expect Parse("abc\tdef\n\t\tghi") == [["abc def"], [" ghi"]]
+
+ setl et sts=-1 sw=3
+ Expect Parse("abc\tdef\n\t\tghi") == [["abc def"], [" ghi"]]
+
+ " See #227
+ if exists('*shiftwidth')
+ setl et sts=0 sw=0 ts=3
+ Expect Parse("abc\tdef\n\t\tghi") == [["abc def"], [" ghi"]]
+ endif
+ end
+
+ it 'parses backslashes as escaping the next character or joining lines'
+ Expect Parse('x\x') == [['xx']]
+ Expect Parse('x\\x') == [['x\x']]
+ Expect Parse("x\\\nx") == [['xx']]
+ Expect Parse('x\$1') == [['x$1']]
+ Expect Parse('${1:\}}') == [[[1, '}']]]
+ Expect Parse('`fnamemodify("\`.x", ":r")`') == [['`']]
+ Expect Parse('\`x\`') == [['`x`']]
+ end
+
+ it 'splits text at newlines'
+ Expect Parse("x\nx") == [['x'], ['x']]
+ end
+
+ it 'joins evaluated expressions to surrounding text on the same line'
+ let g:foo = 'bar'
+ Expect Parse("x`g:foo`x") == [['xbarx']]
+ Expect Parse("x`g:foo`\nx") == [['xbar'], ['x']]
+ Expect Parse("x\n`g:foo`x") == [['x'], ['barx']]
+ end
+
+ it 'expands $VISUAL placeholders with any indents'
+ Expect Parse("x$VISUALx") == [['xtestvisualx']]
+ let b:snipmate_visual = " foo\nbar\n baz"
+ setl noet
+ Expect Parse("\tx\n\t$VISUAL\nx") == [["\tx"], ["\t foo"], ["\tbar"],
+ \ ["\t baz"], ["x"]]
+ end
+
+ it 'determines which var with an id is the stop'
+ let [snip, stops] = Parse("$1$1$1", 0, 1)
+ Expect snip == [[[1, "", stops[1]], [1, {}], [1, {}]]]
+
+ let [snip, stops] = Parse("$1${1}$1", 0, 1)
+ Expect snip == [[[1, "", stops[1]], [1, {}], [1, {}]]]
+
+ let [snip, stops] = Parse("$1${1:}$1", 0, 1)
+ Expect snip == [[[1, {}], [1, "", stops[1]], [1, {}]]]
+
+ end
+
+ it 'picks the first of many possible stops'
+ let [snip, stops] = Parse("$1${1:foo}${1:bar}", 0, 1)
+ Expect snip == [[[1, {}], [1, "foo", stops[1]], [1, {}]]]
+ end
+
+ it 'represents empty lines as an empty string'
+ Expect Parse("foo\n\nbar") == [['foo'], [''], ['bar']]
+ end
+
+end