diff options
Diffstat (limited to 'text.lua')
| -rw-r--r-- | text.lua | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/text.lua b/text.lua index 3323af6..cd80464 100644 --- a/text.lua +++ b/text.lua @@ -12,7 +12,7 @@ function Text.draw(State, line_index, y, startpos) -- wrap long lines local final_screen_line_starting_pos = startpos -- track value to return Text.populate_screen_line_starting_pos(State, line_index) - assert(#line_cache.screen_line_starting_pos >= 1) + assert(#line_cache.screen_line_starting_pos >= 1, 'line cache missing screen line info') for i=1,#line_cache.screen_line_starting_pos do local pos = line_cache.screen_line_starting_pos[i] if pos < startpos then @@ -135,7 +135,7 @@ function Text.text_input(State, t) end function Text.insert_at_cursor(State, t) - assert(State.lines[State.cursor1.line].mode == 'text') + assert(State.lines[State.cursor1.line].mode == 'text', 'line is not text') local byte_offset = Text.offset(State.lines[State.cursor1.line].data, State.cursor1.pos) State.lines[State.cursor1.line].data = string.sub(State.lines[State.cursor1.line].data, 1, byte_offset-1)..t..string.sub(State.lines[State.cursor1.line].data, byte_offset) Text.clear_screen_line_cache(State, State.cursor1.line) @@ -212,7 +212,7 @@ function Text.keychord_press(State, chord) Text.redraw_all(State) -- if we're scrolling, reclaim all fragments to avoid memory leaks end Text.clear_screen_line_cache(State, State.cursor1.line) - assert(Text.le1(State.screen_top1, State.cursor1)) + assert(Text.le1(State.screen_top1, State.cursor1), ('screen_top (line=%d,pos=%d) is below cursor (line=%d,pos=%d)'):format(State.screen_top1.line, State.screen_top1.pos, State.cursor1.line, State.cursor1.pos)) schedule_save(State) record_undo_event(State, {before=before, after=snapshot(State, State.cursor1.line)}) elseif chord == 'delete' then @@ -390,7 +390,7 @@ function Text.pagedown(State) end function Text.up(State) - assert(State.lines[State.cursor1.line].mode == 'text') + assert(State.lines[State.cursor1.line].mode == 'text', 'line is not text') --? print('up', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos) local screen_line_starting_pos, screen_line_index = Text.pos_at_start_of_screen_line(State, State.cursor1) if screen_line_starting_pos == 1 then @@ -416,7 +416,7 @@ function Text.up(State) end else -- move up one screen line in current line - assert(screen_line_index > 1) + assert(screen_line_index > 1, 'bumped up against top screen line in line') local new_screen_line_starting_pos = State.line_cache[State.cursor1.line].screen_line_starting_pos[screen_line_index-1] local new_screen_line_starting_byte_offset = Text.offset(State.lines[State.cursor1.line].data, new_screen_line_starting_pos) local s = string.sub(State.lines[State.cursor1.line].data, new_screen_line_starting_byte_offset) @@ -433,9 +433,9 @@ function Text.up(State) end function Text.down(State) - assert(State.lines[State.cursor1.line].mode == 'text') + assert(State.lines[State.cursor1.line].mode == 'text', 'line is not text') --? print('down', State.cursor1.line, State.cursor1.pos, State.screen_top1.line, State.screen_top1.pos, State.screen_bottom1.line, State.screen_bottom1.pos) - assert(State.cursor1.pos) + assert(State.cursor1.pos, 'cursor has no pos') if Text.cursor_at_final_screen_line(State) then -- line is done, skip to next text line --? print('cursor at final screen line of its line') @@ -509,7 +509,7 @@ function Text.word_left(State) if State.cursor1.pos == 1 then break end - assert(State.cursor1.pos > 1) + assert(State.cursor1.pos > 1, 'bumped up against start of line') if Text.match(State.lines[State.cursor1.line].data, State.cursor1.pos-1, '%s') then break end @@ -543,15 +543,14 @@ end function Text.match(s, pos, pat) local start_offset = Text.offset(s, pos) - assert(start_offset) local end_offset = Text.offset(s, pos+1) - assert(end_offset > start_offset) + assert(end_offset > start_offset, ('end_offset %d not > start_offset %d'):format(end_offset, start_offset)) local curr = s:sub(start_offset, end_offset-1) return curr:match(pat) end function Text.left(State) - assert(State.lines[State.cursor1.line].mode == 'text') + assert(State.lines[State.cursor1.line].mode == 'text', 'line is not text') if State.cursor1.pos > 1 then State.cursor1.pos = State.cursor1.pos-1 else @@ -584,7 +583,7 @@ function Text.right(State) end function Text.right_without_scroll(State) - assert(State.lines[State.cursor1.line].mode == 'text') + assert(State.lines[State.cursor1.line].mode == 'text', 'line is not text') if State.cursor1.pos <= utf8.len(State.lines[State.cursor1.line].data) then State.cursor1.pos = State.cursor1.pos+1 else @@ -609,7 +608,7 @@ function Text.pos_at_start_of_screen_line(State, loc1) return spos,i end end - assert(false) + assert(false, ('invalid pos %d'):format(loc1.pos)) end function Text.pos_at_end_of_screen_line(State, loc1) @@ -623,7 +622,7 @@ function Text.pos_at_end_of_screen_line(State, loc1) end most_recent_final_pos = spos-1 end - assert(false) + assert(false, ('invalid pos %d'):format(loc1.pos)) end function Text.cursor_at_final_screen_line(State) @@ -648,7 +647,7 @@ function Text.move_cursor_down_to_next_text_line_while_scrolling_again_if_necess end -- hack: insert a text line at bottom of file if necessary if State.cursor1.line > #State.lines then - assert(State.cursor1.line == #State.lines+1) + assert(State.cursor1.line == #State.lines+1, 'tried to ensure bottom line of file is text, but failed') table.insert(State.lines, {mode='text', data=''}) table.insert(State.line_cache, {}) end @@ -680,8 +679,8 @@ function Text.snap_cursor_to_bottom_of_screen(State) end y = y - h else - assert(top2.line > 1) - assert(State.lines[top2.line-1].mode == 'drawing') + assert(top2.line > 1, 'tried to snap cursor to buttom of screen but failed') + assert(State.lines[top2.line-1].mode == 'drawing', "expected a drawing but it's not") -- We currently can't draw partial drawings, so either skip it entirely -- or not at all. local h = Drawing_padding_height + Drawing.pixels(State.lines[top2.line-1].h, State.width) @@ -713,7 +712,7 @@ end function Text.to_pos_on_line(State, line_index, mx, my) local line = State.lines[line_index] local line_cache = State.line_cache[line_index] - assert(my >= line_cache.starty) + assert(my >= line_cache.starty, 'failed to map y pixel to line') -- duplicate some logic from Text.draw local y = line_cache.starty local start_screen_line_index = Text.screen_line_index(line_cache.screen_line_starting_pos, line_cache.startpos) @@ -736,7 +735,7 @@ function Text.to_pos_on_line(State, line_index, mx, my) end y = nexty end - assert(false) + assert(false, 'failed to map y pixel to line') end function Text.screen_line_width(State, line_index, i) @@ -802,7 +801,7 @@ function Text.nearest_cursor_pos(line, x, left) leftpos = curr end end - assert(false) + assert(false, 'failed to map x pixel to pos') end -- return the nearest index of line (in utf8 code points) which lies entirely @@ -833,7 +832,7 @@ function Text.nearest_pos_less_than(line, x) left = curr end end - assert(false) + assert(false, 'failed to map x pixel to pos') end function Text.x_after(s, pos) @@ -864,7 +863,7 @@ function Text.to2(State, loc1) break end end - assert(result.screen_pos) + assert(result.screen_pos, 'failed to convert schema-1 coordinate to schema-2') return result end @@ -906,7 +905,7 @@ function Text.offset(s, pos1) if result == nil then print(pos1, #s, s) end - assert(result) + assert(result, "Text.offset returned nil; this is likely a failure to handle utf8") return result end |