1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
function! targets#target#new(sl, sc, el, ec, error)
    return {
        \ 'error': a:error,
        \ 'sl': a:sl,
        \ 'sc': a:sc,
        \ 'el': a:el,
        \ 'ec': a:ec,
        \ 'linewise': 0,
        \
        \ 'copy': function('targets#target#copy'),
        \ 'setS': function('targets#target#setS'),
        \ 'setE': function('targets#target#setE'),
        \ 's': function('targets#target#s'),
        \ 'e': function('targets#target#e'),
        \ 'searchposS': function('targets#target#searchposS'),
        \ 'searchposE': function('targets#target#searchposE'),
        \ 'getcharS': function('targets#target#getcharS'),
        \ 'getcharE': function('targets#target#getcharE'),
        \ 'getposS': function('targets#target#getposS'),
        \ 'getposE': function('targets#target#getposE'),
        \ 'cursorS': function('targets#target#cursorS'),
        \ 'cursorE': function('targets#target#cursorE'),
        \ 'state': function('targets#target#state'),
        \ 'range': function('targets#target#range'),
        \ 'select': function('targets#target#select'),
        \ 'string': function('targets#target#string')
        \ }
endfunction

function! targets#target#fromValues(sl, sc, el, ec)
    if a:sl == 0 || a:sc == 0 || a:el == 0 || a:ec == 0
        return targets#target#withError("zero found")
    endif
    return targets#target#new(a:sl, a:sc, a:el, a:ec, '')
endfunction

function! targets#target#fromVisualSelection()
    let [sl, sc] = getpos("'<")[1:2]
    let [el, ec] = getpos("'>")[1:2]
    return targets#target#fromValues(sl, sc, el, ec)
endfunction

function! targets#target#withError(error)
    return targets#target#new(0, 0, 0, 0, a:error)
endfunction

function! targets#target#copy() dict
    return targets#target#fromValues(self.sl, self.sc, self.el, self.ec)
endfunction

function! targets#target#setS(line, column) dict
    let [self.sl, self.sc] = [a:line, a:column]
endfunction

function! targets#target#setE(line, column) dict
    let [self.el, self.ec] = [a:line, a:column]
endfunction

function! targets#target#s() dict
    return [self.sl, self.sc]
endfunction

function! targets#target#e() dict
    return [self.el, self.ec]
endfunction

function! targets#target#searchposS(...) dict
    let pattern = a:1
    let flags = a:0 > 1 ? a:2 : ''
    let stopline = a:0 > 2 ? a:3 : 0
    let [self.sl, self.sc] = searchpos(pattern, flags, stopline)
endfunction

function! targets#target#searchposE(...) dict
    let pattern = a:1
    let flags = a:0 > 1 ? a:2 : ''
    let stopline = a:0 > 2 ? a:3 : 0
    let [self.el, self.ec] = searchpos(pattern, flags, stopline)
endfunction

function! targets#target#getcharS() dict
    return getline(self.sl)[self.sc-1]
endfunction

function! targets#target#getcharE() dict
    return getline(self.el)[self.ec-1]
endfunction

" args (mark = '.')
function! targets#target#getposS(...) dict
    let mark = a:0 > 0 ? a:1 : '.'
    let [self.sl, self.sc] = getpos(mark)[1:2]
endfunction

" args (mark = '.')
function! targets#target#getposE(...) dict
    let mark = a:0 > 0 ? a:1 : '.'
    let [self.el, self.ec] = getpos(mark)[1:2]
endfunction

function! targets#target#cursorS() dict
    call cursor(self.s())
endfunction

function! targets#target#cursorE() dict
    call cursor(self.e())
endfunction

function! targets#target#state() dict
    if self.error != ''
        return targets#state#invalid()
    endif
    if self.sl == 0 || self.el == 0
        return targets#state#invalid()
    elseif self.sl < self.el
        return targets#state#nonempty()
    elseif self.sl > self.el
        return targets#state#invalid()
    elseif self.sc == self.ec + 1
        return targets#state#empty()
    elseif self.sc > self.ec
        return targets#state#invalid()
    else
        return targets#state#nonempty()
    endif
endfunction

function! targets#target#range(cursor, min, max) dict
    if self.error != ''
        return ''
    endif

    let positionS = s:position(self.sl, self.sc, a:cursor, a:min, a:max, 'c')
    let positionE = s:position(self.el, self.ec, a:cursor, a:min, a:max, 'c')
    return positionS . positionE
endfunction

function! s:position(line, column, cursor, min, max, tie)
    let cursorLine = a:cursor[1]

    if a:line == cursorLine " cursor line
        let cursorColumn = a:cursor[2]
        if a:column == cursorColumn " same column
            return a:tie
        elseif a:column < cursorColumn " left of cursor
            return 'l'
        else " a:column > cursorColumn " right of cursor
            return 'r'
        endif

    elseif a:line < cursorLine
        if a:line >= a:min " above on screen
            return 'a'
        else " above off screen
            return 'A'
        endif

    else " a:line > cursorLine
        if a:line <= a:max " below on screen
            return 'b'
        else " below off screen
            return 'B'
        endif
    endif
endfunction

" visually select the target
function! targets#target#select() dict
    call cursor(self.s())

    if self.linewise
        silent! normal! V
    else
        silent! normal! v
    endif

    call cursor(self.e())
endfunction

function! targets#target#string() dict
    if self.error != ''
        return '[err:' . self.error . ']'
    endif

    return '[' . self.sl . ' ' . self.sc . '; ' . self.el . ' ' . self.ec . ']'
endfunction