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path: root/lua/nvim-lsp-installer/ui/init.lua
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local Data = require "nvim-lsp-installer.data"
local M = {}

M.NodeType = Data.enum {
    "NODE",
    "STYLE_BLOCK",
    "VIRTUAL_TEXT",
    "HL_TEXT",
}

function M.Node(children)
    return {
        type = M.NodeType.NODE,
        children = children,
    }
end

function M.HlTextNode(lines_with_span_tuples)
    if type(lines_with_span_tuples[1]) == "string" then
        -- this enables a convenience API for just rendering a single line (with just a single span)
        lines_with_span_tuples = { { lines_with_span_tuples } }
    end
    return {
        type = M.NodeType.HL_TEXT,
        lines = lines_with_span_tuples,
    }
end

function M.Text(lines)
    return M.HlTextNode(Data.list_map(function(line)
        return { { line, "Normal" } }
    end, lines))
end

M.CascadingStyle = Data.enum {
    "INDENT",
    "CENTERED",
}

function M.CascadingStyleNode(styles, children)
    return {
        type = M.NodeType.STYLE_BLOCK,
        styles = styles,
        children = children,
    }
end

function M.VirtualTextNode(virt_text)
    return {
        type = M.NodeType.VIRTUAL_TEXT,
        virt_text = virt_text,
    }
end

function M.When(condition, a)
    if condition then
        if type(a) == "function" then
            return a()
        else
            return a
        end
    end
    return M.Node {}
end

function M.EmptyLine()
    return M.Text { "" }
end

return M