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feat(diagnostic): allow 'prefix' option to return highlight
Extend the 'prefix' option for `open_float` to also provide an optional highlight group for the prefix string.
This commit is contained in:
Gregory Anders
parent
8f984dc1f2
commit
cc48837622
@ -384,17 +384,24 @@ config({opts}, {namespace}) *vim.diagnostic.config()*
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a diagnostic as input and returns a
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string. The return value is the text used
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to display the diagnostic.
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• prefix: (function or string) Prefix each
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diagnostic in the floating window. If a
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function, it must have the signature
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(diagnostic, i, total) -> string, where
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{i} is the index of the diagnostic being
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evaluated and {total} is the total number
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of diagnostics displayed in the window.
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The returned string is prepended to each
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diagnostic in the window. Otherwise, if
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• prefix: (function, string, or table)
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Prefix each diagnostic in the floating
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window. If a function, it must have the
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signature (diagnostic, i, total) ->
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(string, string), where {i} is the index
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of the diagnostic being evaluated and
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{total} is the total number of
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diagnostics displayed in the window. The
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function should return a string which is
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prepended to each diagnostic in the
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window as well as an (optional) highlight
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group which will be used to highlight the
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prefix. If {prefix} is a table, it is
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interpreted as a [text, hl_group] tuple
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as in |nvim_echo()|; otherwise, if
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{prefix} is a string, it is prepended to
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each diagnostic.
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each diagnostic in the window with no
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highlight.
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• update_in_insert: (default false) Update
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diagnostics in Insert mode (if false,
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@ -625,9 +632,10 @@ open_float({bufnr}, {opts}) *vim.diagnostic.open_float()*
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return value is the text used to display the
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diagnostic. Overrides the setting from
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|vim.diagnostic.config()|.
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• prefix: (function or string) Prefix each
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diagnostic in the floating window. Overrides
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the setting from |vim.diagnostic.config()|.
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• prefix: (function, string, or table) Prefix
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each diagnostic in the floating window.
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Overrides the setting from
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|vim.diagnostic.config()|.
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Return: ~
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tuple ({float_bufnr}, {win_id})
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@ -539,12 +539,17 @@ end
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--- the message. One of "always" or "if_many".
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--- * format: (function) A function that takes a diagnostic as input and returns a
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--- string. The return value is the text used to display the diagnostic.
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--- * prefix: (function or string) Prefix each diagnostic in the floating window. If
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--- a function, it must have the signature (diagnostic, i, total) -> string,
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--- where {i} is the index of the diagnostic being evaluated and {total} is
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--- the total number of diagnostics displayed in the window. The returned
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--- string is prepended to each diagnostic in the window. Otherwise,
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--- if {prefix} is a string, it is prepended to each diagnostic.
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--- * prefix: (function, string, or table) Prefix each diagnostic in the floating
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--- window. If a function, it must have the signature (diagnostic, i,
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--- total) -> (string, string), where {i} is the index of the diagnostic
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--- being evaluated and {total} is the total number of diagnostics
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--- displayed in the window. The function should return a string which
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--- is prepended to each diagnostic in the window as well as an
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--- (optional) highlight group which will be used to highlight the
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--- prefix. If {prefix} is a table, it is interpreted as a [text,
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--- hl_group] tuple as in |nvim_echo()|; otherwise, if {prefix} is a
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--- string, it is prepended to each diagnostic in the window with no
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--- highlight.
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--- - update_in_insert: (default false) Update diagnostics in Insert mode (if false,
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--- diagnostics are updated on InsertLeave)
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--- - severity_sort: (default false) Sort diagnostics by severity. This affects the order in
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@ -1148,7 +1153,7 @@ end
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--- - format: (function) A function that takes a diagnostic as input and returns a
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--- string. The return value is the text used to display the diagnostic.
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--- Overrides the setting from |vim.diagnostic.config()|.
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--- - prefix: (function or string) Prefix each diagnostic in the floating window.
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--- - prefix: (function, string, or table) Prefix each diagnostic in the floating window.
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--- Overrides the setting from |vim.diagnostic.config()|.
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---@return tuple ({float_bufnr}, {win_id})
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function M.open_float(bufnr, opts)
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@ -1237,18 +1242,28 @@ function M.open_float(bufnr, opts)
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local prefix_opt = if_nil(opts.prefix, (scope == "cursor" and #diagnostics <= 1) and "" or function(_, i)
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return string.format("%d. ", i)
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end)
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local prefix, prefix_hl_group
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if prefix_opt then
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vim.validate { prefix = { prefix_opt, function(v)
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return type(v) == "string" or type(v) == "function"
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end, "'string' or 'function'" } }
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return type(v) == "string" or type(v) == "table" or type(v) == "function"
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end, "'string' or 'table' or 'function'" } }
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if type(prefix_opt) == "string" then
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prefix, prefix_hl_group = prefix_opt, "NormalFloat"
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elseif type(prefix_opt) == "table" then
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prefix, prefix_hl_group = prefix_opt[1] or "", prefix_opt[2] or "NormalFloat"
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end
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end
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for i, diagnostic in ipairs(diagnostics) do
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local prefix = type(prefix_opt) == "string" and prefix_opt or prefix_opt(diagnostic, i, #diagnostics)
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if prefix_opt and type(prefix_opt) == "function" then
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prefix, prefix_hl_group = prefix_opt(diagnostic, i, #diagnostics)
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prefix, prefix_hl_group = prefix or "", prefix_hl_group or "NormalFloat"
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end
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local hiname = floating_highlight_map[diagnostic.severity]
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local message_lines = vim.split(diagnostic.message, '\n')
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table.insert(lines, prefix..message_lines[1])
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table.insert(highlights, {#prefix, hiname})
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table.insert(highlights, {#prefix, hiname, prefix_hl_group})
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for j = 2, #message_lines do
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table.insert(lines, string.rep(' ', #prefix) .. message_lines[j])
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table.insert(highlights, {0, hiname})
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@ -1261,8 +1276,10 @@ function M.open_float(bufnr, opts)
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end
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local float_bufnr, winnr = require('vim.lsp.util').open_floating_preview(lines, 'plaintext', opts)
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for i, hi in ipairs(highlights) do
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local prefixlen, hiname = unpack(hi)
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-- Start highlight after the prefix
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local prefixlen, hiname, prefix_hiname = unpack(hi)
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if prefix_hiname then
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vim.api.nvim_buf_add_highlight(float_bufnr, -1, prefix_hiname, i-1, 0, prefixlen)
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end
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vim.api.nvim_buf_add_highlight(float_bufnr, -1, hiname, i-1, prefixlen, -1)
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end
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@ -1397,7 +1397,7 @@ describe('vim.diagnostic', function()
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return lines
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]])
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eq("Error executing lua: .../diagnostic.lua:0: prefix: expected 'string' or 'function', got 42",
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eq("Error executing lua: .../diagnostic.lua:0: prefix: expected 'string' or 'table' or 'function', got 42",
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pcall_err(exec_lua, [[ vim.diagnostic.open_float(0, { prefix = 42 }) ]]))
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end)
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end)
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