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Merge pull request #84 from hjdivad/hjdivad/tests
chore: test harness
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| packages/nvim/config/lua/config/local_options.lua | ||
| /packages/nvim/config/lua/config/local_options.lua | ||
| /.tests/ |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,149 @@ | ||
| ---@class MapStack | ||
| local M = {} | ||
|
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||
| local stack = {} | ||
|
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| local function reset() | ||
| stack = {} | ||
| end | ||
|
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||
| local function tbl_empty_dict(t) | ||
| for _, _ in pairs(t) do | ||
| return false | ||
| end | ||
|
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| return true | ||
| end | ||
|
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| ---@param lhs string | ||
| ---@param mode string | ||
| local function push_restore_fn(lhs, mode) | ||
| ---@type table | ||
| ---@diagnostic disable-next-line: assign-type-mismatch, param-type-mismatch | ||
| local maparg = vim.fn.maparg(lhs, mode, false, true) | ||
| if maparg["buffer"] == 1 then | ||
| --FIXME: handle case where a buf-local mapping shadowed a global mapping we | ||
| --should have restored here | ||
| -- | ||
| --e.g. | ||
| -- nmap lhs rhs_g | ||
| -- nmap <buffer> lhs rhs | ||
| -- push | ||
| -- nmap lhs rhs2 | ||
| -- pop | ||
| -- | ||
| --probably requires manually re-implementing maparg and mapset, which is | ||
| --also needed for proper buffer keymap support | ||
| maparg = {} | ||
| end | ||
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| local restore_fn | ||
| if tbl_empty_dict(maparg) then | ||
| restore_fn = function() | ||
| vim.keymap.del(mode, lhs) | ||
| end | ||
| else | ||
| restore_fn = function() | ||
| vim.fn.mapset(mode, false, maparg) | ||
| end | ||
| end | ||
|
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||
| local frame = stack[#stack] | ||
| table.insert(frame, restore_fn) | ||
| end | ||
|
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||
| ---@class KeymapProxy | ||
| local keymap = {} | ||
|
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| ---@param modes string|table | ||
| ---@param cb fun(mode: string) | ||
| local function for_each_mode(modes, cb) | ||
| if type(modes) == "table" then | ||
| for _, mode in ipairs(modes) do | ||
| cb(mode) | ||
| end | ||
| elseif type(modes) == "string" then | ||
| cb(modes) | ||
| else | ||
| error("Invalid type(modes) '" .. type(modes) .. "'") | ||
| end | ||
| end | ||
|
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||
| ---@param modes string|table | ||
| ---@param lhs string | ||
| ---@param rhs string|function | ||
| ---@param opts? table | ||
| ---see :help vim.keymap.set | ||
| keymap.set = function(modes, lhs, rhs, opts) | ||
| for_each_mode(modes, function(mode) | ||
| push_restore_fn(lhs, mode) | ||
| vim.keymap.set(mode, lhs, rhs, opts) | ||
| end) | ||
| end | ||
|
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||
| ---@param modes string|table | ||
| ---@param lhs string | ||
| ---@param opts? table | ||
| ---see :help vim.keymap.del | ||
| keymap.del = function(modes, lhs, opts) | ||
| for_each_mode(modes, function(mode) | ||
| push_restore_fn(lhs, mode) | ||
| vim.keymap.del(mode, lhs, opts) | ||
| end) | ||
| end | ||
|
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||
| keymap.buf = {} | ||
|
|
||
| ---@param buffer integer | ||
| ---@param modes string|table | ||
| ---@param lhs string | ||
| ---@param rhs string|function | ||
| ---@param opts? table | ||
| keymap.buf.set = function(buffer, modes, lhs, rhs, opts) | ||
| for_each_mode(modes, function(mode) | ||
| -- push_restore_fn(...) | ||
| -- vim.api.nvim_buf_set_keymap(buffer, mode, lhs, rhs, opts) | ||
| end) | ||
| end | ||
|
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||
| ---@param buffer integer | ||
| ---@param modes string|table | ||
| ---@param lhs string | ||
| ---@param opts? table | ||
| keymap.buf.del = function(buffer, modes, lhs, opts) | ||
| for_each_mode(modes, function(mode) | ||
| -- push_restore_fn(...) | ||
| -- vim.api.nvim_buf_del_keymap(buffer, mode, lhs) | ||
| end) | ||
| end | ||
|
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||
| ---Create a new keymap frame. `cb` will be called with a stack-aware `keymap` | ||
| ---that can be used the same as `vim.keymap.set` and `vim.keymap.del`. Any | ||
| --changes made will be saved to the current stack frame and can be shadowed by | ||
| --future calls to `push`, and undone by calls to `pop`. | ||
| --- | ||
| ---@param cb fun(keymap: KeymapProxy) | ||
| M.push = function(cb) | ||
| table.insert(stack, {}) | ||
| cb(keymap) | ||
| end | ||
|
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||
| ---Remove the most recent stack frame, restoring the state of the keymaps at | ||
| ---the prior frame. | ||
| M.pop = function() | ||
| -- run all the restore operations to undo the effects of the mappings set during the last push | ||
| local frame = stack[#stack] | ||
| for _, restore_fn in ipairs(frame) do | ||
| restore_fn() | ||
| end | ||
| table.remove(stack) | ||
| end | ||
|
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||
| M._debug = function() | ||
| return { | ||
| stack = stack, | ||
| reset = reset, | ||
| } | ||
| end | ||
|
|
||
| return M |
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