nvim/lua/tools/sqlx-format.lua
RingOfStorms (Joshua Bell) b1954a147a sqlformat refactor
2023-07-31 01:51:47 -05:00

119 lines
3.3 KiB
Lua

--PREREQ: https://github.com/darold/pgFormatter
-- Based on this video: https://www.youtube.com/watch?v=v3o9YaHBM4Q
local rust_sqlx_f = function()
return vim.treesitter.query.parse(
"rust",
[[
; query macro
(macro_invocation
(scoped_identifier
path: (identifier) @_path (#eq? @_path "sqlx")
name: (identifier) @_name (#any-of? @_name "query" "query_scalar"))
(token_tree
. (raw_string_literal) @sql (#offset! @sql 1 0 -1 0))
)
; query_as macro
(macro_invocation
(scoped_identifier
path: (identifier) @_path (#eq? @_path "sqlx")
name: (identifier) @_name (#eq? @_name "query_as"))
(token_tree
(_) . (raw_string_literal) @sql (#offset! @sql 1 0 -1 0))
)
; query and query_as function
(call_expression
(scoped_identifier
path: (identifier) @_path (#eq? @_path "sqlx")
name: (identifier) @_name (#contains? @_name "query"))
(arguments
(raw_string_literal) @sql (#offset! @sql 1 0 -1 0))
)
]]
)
end
local get_root = function(bufnr)
local parser = vim.treesitter.get_parser(bufnr, "rust", {})
local tree = parser:parse()[1]
return tree:root()
end
local format_dat_sql = function(bufnr)
local rust_sqlx = rust_sqlx_f()
bufnr = bufnr or vim.api.nvim_get_current_buf()
if vim.bo[bufnr].filetype ~= "rust" then
vim.notify "can only be used in rust"
return
end
local root = get_root(bufnr)
local changes = {}
for id, node in rust_sqlx:iter_captures(root, bufnr, 0, -1) do
local name = rust_sqlx.captures[id]
if name == "sql" then
-- range: { row_start [1], col_start [2], row_end [3], col_end }
local range = { node:range() }
local indentation = string.rep(" ", range[2])
local node_text = vim.treesitter.get_node_text(node, bufnr)
if node_text:match('r#"\n(.*\n)+?%s*"#$') == nil then
-- text is invalid because it does not have newlines in raw string literal
goto continue
end
local text = node_text:sub(4, -3) -- get just the inside of the raw string literal
-- TODO get current spaces for indentation and run pg_format with that indendation amount
local formatted = vim.fn.system({ "pg_format", "-L" }, text)
local lines = {}
for line in formatted:gmatch("[^\r\n]+") do
lines[#lines + 1] = line
end
for idx, line in ipairs(lines) do
lines[idx] = indentation .. line
end
-- Fix indentation of end of raw string literal as well
local last_line = vim.api.nvim_buf_get_lines(bufnr, range[3], range[3] + 1, true)[1]:match("^%s*(.*)")
-- print("LAST LINE", last_line)
lines[#lines + 1] = indentation .. last_line
table.insert(changes, 1, {
start = range[1] + 1,
final = range[3] + 1,
formatted = lines,
})
-- Some left overs from me attempting to get this to work inside of a null_ls formatter
-- changes[#changes + 1] = {
-- col = 0,
-- row = range[1] + 2,
-- end_col = -1,
-- end_row = range[3] + 1,
-- text = table.concat(lines, '\n'),
-- }
::continue::
end
end
-- return changes
-- print("Change", vim.inspect(changes))
for _, change in ipairs(changes) do
vim.api.nvim_buf_set_lines(bufnr, change.start, change.final, false, change.formatted)
end
end
vim.api.nvim_create_user_command("SqlxFormat", function()
format_dat_sql()
end, {})