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added tex snippets #7

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344 changes: 310 additions & 34 deletions lua/luasnip_snippets/snippets/tex.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -20,44 +20,320 @@ local conds = require("luasnip.extras.expand_conditions")
local pi = ls.parent_indexer
local isn = require("luasnip.nodes.snippet").ISN
local psn = require("luasnip.nodes.snippet").PSN
local l = require'luasnip.extras'.l
local r = require'luasnip.extras'.rep
local l = require 'luasnip.extras'.l
local r = require 'luasnip.extras'.rep
local p = require("luasnip.extras").partial
local types = require("luasnip.util.types")
local events = require("luasnip.util.events")
local su = require("luasnip.util.util")

-- ----------------------------------------------------------------------------
-- See https://www.ejmastnak.com/tutorials/vim-latex/luasnip.html#tldr-hello-world-example
-- Summary: If `SELECT_RAW` is populated with a visual selection, the function
-- returns an insert node whose initial text is set to the visual selection.
-- If `SELECT_RAW` is empty, the function simply returns an empty insert node.
local get_visual = function(args, parent)
if (#parent.snippet.env.SELECT_RAW > 0) then
return sn(nil, i(1, parent.snippet.env.SELECT_RAW))
else -- If SELECT_RAW is empty, return a blank insert node
return sn(nil, i(1))
end
end

-- Some LaTeX-specific conditional expansion functions (requires VimTeX)
local tex_utils = {}
tex_utils.in_mathzone = function()
--[[ return vim.fn['vimtex#syntax#in_mathzone']() == 1 ]]
return vim.api.nvim_eval('vimtex#syntax#in_mathzone()') == 1
end

tex_utils.in_env = function(name)
local is_inside = vim.fn['vimtex#env#is_inside'](name)
return (is_inside[1] > 0 and is_inside[2] > 0)
end

tex_utils.in_tikz = function()
return tex_utils.in_env("tikzpicture")
end

tex_utils.in_itemize = function()
return tex_utils.in_env("itemize")
end

-- ----------------------------------------------------------------------------

return {
tex = {
-- rec_ls is self-referencing. That makes this snippet 'infinite' eg. have as many
-- \item as necessary by utilizing a choiceNode.
s("ls", {
t({ "\\begin{itemize}", "\t\\item " }),
i(1),
d(2, rec_ls, {}),
t({ "", "\\end{itemize}" }),
}),


-- --- lemon moll_snippets
-- ls.parser.parse_snippet({trig = ";"}, "\\$$1\\$$0"),
-- s({trig = "(s*)sec", wordTrig = true, regTrig = true}, {
-- f(function(args) return {"\\"..string.rep("sub", string.len(args[1].captures[1]))} end, {}),
-- t({"section{"}), i(1), t({"}", ""}), i(0)
-- }),
-- ls.parser.parse_snippet({trig = "beg", wordTrig = true}, "\\begin{$1}\n\t$2\n\\end{$1}"),
-- ls.parser.parse_snippet({trig = "beq", wordTrig = true}, "\\begin{equation*}\n\t$1\n\\end{equation*}"),
-- ls.parser.parse_snippet({trig = "bal", wordTrig = true}, "\\begin{aligned}\n\t$1\n\\end{aligned}"),
-- ls.parser.parse_snippet({trig = "ab", wordTrig = true}, "\\langle $1 \\rangle"),
-- ls.parser.parse_snippet({trig = "lra", wordTrig = true}, "\\leftrightarrow"),
-- ls.parser.parse_snippet({trig = "Lra", wordTrig = true}, "\\Leftrightarrow"),
-- ls.parser.parse_snippet({trig = "fr", wordTrig = true}, "\\frac{$1}{$2}"),
-- ls.parser.parse_snippet({trig = "tr", wordTrig = true}, "\\item $1"),
-- ls.parser.parse_snippet({trig = "abs", wordTrig = true}, "\\|$1\\|"),
-- s("ls", {
-- t({"\\begin{itemize}",
-- "\t\\item "}), i(1), d(2, rec_ls, {}),
-- t({"", "\\end{itemize}"}), i(0)
-- })
}
tex = {
-- rec_ls is self-referencing. That makes this snippet 'infinite' eg. have as many
-- \item as necessary by utilizing a choiceNode.
s("ls", {
t({ "\\begin{itemize}", "\t\\item " }),
i(1),
d(2, rec_ls, {}),
t({ "", "\\end{itemize}" }),
}),


-- --- lemon moll_snippets
-- ls.parser.parse_snippet({trig = ";"}, "\\$$1\\$$0"),
-- s({trig = "(s*)sec", wordTrig = true, regTrig = true}, {
-- f(function(args) return {"\\"..string.rep("sub", string.len(args[1].captures[1]))} end, {}),
-- t({"section{"}), i(1), t({"}", ""}), i(0)
-- }),
-- ls.parser.parse_snippet({trig = "beg", wordTrig = true}, "\\begin{$1}\n\t$2\n\\end{$1}"),
-- ls.parser.parse_snippet({trig = "beq", wordTrig = true}, "\\begin{equation*}\n\t$1\n\\end{equation*}"),
-- ls.parser.parse_snippet({trig = "bal", wordTrig = true}, "\\begin{aligned}\n\t$1\n\\end{aligned}"),
-- ls.parser.parse_snippet({trig = "ab", wordTrig = true}, "\\langle $1 \\rangle"),
-- ls.parser.parse_snippet({trig = "lra", wordTrig = true}, "\\leftrightarrow"),
-- ls.parser.parse_snippet({trig = "Lra", wordTrig = true}, "\\Leftrightarrow"),
-- ls.parser.parse_snippet({trig = "fr", wordTrig = true}, "\\frac{$1}{$2}"),
-- ls.parser.parse_snippet({trig = "tr", wordTrig = true}, "\\item $1"),
-- ls.parser.parse_snippet({trig = "abs", wordTrig = true}, "\\|$1\\|"),
-- s("ls", {
-- t({"\\begin{itemize}",
-- "\t\\item "}), i(1), d(2, rec_ls, {}),
-- t({"", "\\end{itemize}"}), i(0)
-- })



-- autosnippets expand only in_mathzone or in_env except $ and ...
s({ trig = "ip", wordTrig = true, snippetType = 'autosnippet', dscr = 'Inner product' },
fmta(
"\\langle <>, <> \\rangle <>",
{
i(1),
i(2),
i(0)
}
),
{ condition = tex_utils.in_mathzone, show_condition = tex_utils.in_mathzone }
),

s({ trig = "fr", wordTrig = true, snippetType = 'autosnippet', dscr = '\frac{}{}' },
fmta(
"\\frac{<>}{<>} <>",
{
i(1),
i(2),
i(0)
}
),
{ condition = tex_utils.in_mathzone, show_condition = tex_utils.in_mathzone }
),

s({ trig = "top", wordTrig = true, snippetType = 'autosnippet', dscr = '^\top' },
fmta(
"^\\top <>",
{
i(0)
}
),
{ condition = tex_utils.in_mathzone, show_condition = tex_utils.in_mathzone }
),

parse({ trig = "$", wordTrig = true, snippetType = 'autosnippet', dscr = 'in-line math' },
"$ $1 $ $0"),

parse({ trig = "...", wordTrig = true, snippetType = 'autosnippet', dscr = '\\ldots' },
"\\ldots $0"),


s({ trig = "^", wordTrig = true, snippetType = 'autosnippet', dscr = 'superscript box' },
fmta(
"^{<>} <>",
{
i(1),
i(0)
}
),
{ condition = tex_utils.in_mathzone, show_condition = tex_utils.in_mathzone }
),

s({ trig = "_", wordTrig = true, snippetType = 'autosnippet', dscr = 'subscript box' },
fmta(
"_{<>} <>",
{
i(1),
i(0)
}
),
{ condition = tex_utils.in_mathzone, show_condition = tex_utils.in_mathzone }
),

s({ trig = "mbr", wordTrig = true, snippetType = 'autosnippet', dscr = '\\mathbf{R}{$1}' },
fmta(
"\\mathbf{R}^{<>} <>",
{ i(1),
i(0) }
),
{ condition = tex_utils.in_mathzone, show_condition = tex_utils.in_mathzone }
),

parse({ trig = "bitemize", wordTrig = true, dscr = 'begin itemize' },
"\\begin{itemize} \n \\item $1 \n \\end{itemize}"),

s({ trig = "it", wordTrig = true, snippetType = 'autosnippet', dscr = '\\item' },
fmta(
"\\item <>",
{ i(0), }
),
{ condition = tex_utils.in_itemize, show_condition = tex_utils.in_itemize }
),

parse({ trig = "beg", wordTrig = true, dscr = 'begin env' },
"\\begin{${1:ENV_NAME}} \n \t${2:$SELECT_DEDENT} \n \\end{$1}"),

parse({ trig = "section", wordTrig = true, dscr = 'section' },
"\\section{${1:NAME}} \n \\label{sec:$1}"),

parse({ trig = "subsection", wordTrig = true, dscr = 'subsection' },
"\\subsection{${1:NAME}} \n \\label{sec:$1}"),

parse({ trig = "subsubsection", wordTrig = true, dscr = 'subsubsection' },
"\\subsubsection{${1:NAME}} \n \\label{sec:$1}"),

parse({ trig = "bequation", wordTrig = true, dscr = 'begin equation' },
"\\begin{equation*}\n\t${1:$SELECT_DEDENT}\n\\end{equation*}"),

parse({ trig = "baligned", wordTrig = true, dscr = 'begin aligned' },
"\\begin{aligned} \n \t${1:$SELECT_DEDENT} \n \\end{aligned}"),

parse({ trig = "bframe", wordTrig = true, dscr = 'begin frame' },
"% Begin FRAME %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \n \
\\begin{frame} \n \\frametitle{$1} \n $2 \n \\end{frame}"),

parse({ trig = "benumerate", wordTrig = true, dscr = 'begin enumerate' },
" \\begin{enumerate} \n \
\\item ${1} \n \
\\end{enumerate}"),

parse({ trig = "bmatrix", wordTrig = true, dscr = 'begin matrix' },
" \\begin{bmatrix} \n \
$1 & $2 \\\\ \
$3 & $4 \
\\end{bmatrix}"),

parse({ trig = "float_img", wordTrig = true, dscr = 'tikz float_img' },
" \\tikz[remember picture, overlay] \\node[anchor=center] \
(img) at ($(current page.center)+(0,0)$) \
{\\includegraphics[width=3.5cm]{$1}}; \n \
\\tikz[remember picture, overlay] \\node (caption)\
[below of=img, yshift=-0.6cm, xshift=0cm] {$0}; "),

parse({ trig = "bfigure", wordTrig = true, dscr = 'begin figure' },
" \\begin{figure}[${1:htpb}] \
\\centering \
${2:\\includegraphics[width=0.8\\textwidth]{$3}} \
\\caption{${4:${3}}} \
\\label{fig:${5:${3}}} \
\\end{figure} "),

parse({ trig = "bsubfigure", wordTrig = true, dscr = 'begin subfigure' },
" \\begin{figure}[${1:htpb}] \
\\centering \
\\begin{subfigure}[b]{0.3\\textwidth} \
\\centering \
\\includegraphics[width=\\textwidth]{${2:fig1}} \
\\caption{${3:$2}} \
\\label{fig:${4:$2}} \
\\end{subfigure} \
\\hfill \
\\begin{subfigure}[b]{0.3\\textwidth} \
\\centering \
\\includegraphics[width=\\textwidth]{${5:fig2}} \
\\caption{${6:$5}} \
\\label{fig:${7:$5}} \
\\end{subfigure} \
\\hfill \
\\begin{subfigure}[b]{0.3\\textwidth} \
\\centering \
\\includegraphics[width=\\textwidth]{${8:fig3}} \
\\caption{${9:$8}} \
\\label{fig:${10:$8}} \
\\end{subfigure} \
\\caption{${11:Three simple graphs}} \
\\label{fig:${12:three graphs}} \
\\end{figure} "),

parse({ trig = "norm", wordTrig = true },
"\\lvert ${1:$SELECT_DEDENT} \\rvert"),

parse({ trig = "*", wordTrig = true },
"\\cdot "),

parse({ trig = "sum", wordTrig = true },
[[\sum^{$1}_{$2}]]),

parse({ trig = "int", wordTrig = true },
[[\int_{${1:lower}}^{${2:upper}} $3 \\,d$4]]),

parse({ trig = "lim", wordTrig = true },
[[\lim_{${1:lower}}^{${2:upper}} $3 \\,d$4]]),

parse({ trig = "partial_derivative", wordTrig = true, dscr = 'partial derivative' },
[[\frac{\partial ${1:f(x)}}{\partial ${2:x}} $0]]),

s({ trig = "hr", dscr = "The hyperref package's href{}{} command (for url links)" },
fmta(
[[\href{<>}{<>}]],
{
i(1, "url"),
i(2, "display name"),
}
)
),

s({ trig = "emph", dscr = "\\emph{$VISUAL}" },
fmta("\\emph{<>}",
{
d(1, get_visual),
}
)
),

s({ trig = "textbf", dscr = "\\textbf{$VISUAL}" },
fmta("\\textbf{<>}",
{
d(1, get_visual),
}
)
),

s({ trig = "bm", dscr = "bold math \\bm{$VISUAL}" },
fmta("\\bm{<>}",
{
d(1, get_visual),
}
)
),

-- Some Templates ------------------------------------------
parse({ trig = "template_standalone", wordTrig = true, dscr = 'standalone figure' },
" \
\\documentclass[varwidth, border=0cm]{standalone} \
\
\\usepackage[export]{adjustbox} \
\\usepackage{graphicx} \
\\usepackage{array} \
\\usepackage{tabu} \
\\usepackage{multirow} \
\\usepackage{multicol} \
\\usepackage{makecell} \
\
\\newcommand{\\tabfigure}[2]{\\raisebox{-.5\\height}{\\includegraphics[#1]{#2}}} \
\
\\begin{document} \
\
\\begin{figure} \
\\centering \
\\setlength\tabcolsep{0pt} \
\\def\\arraystretch{0.0} % 1 is the default, change whatever you need \
\\begin{tabu}{c} \
\\tabfigure{height=1cm, width=1cm}{$0} \
\\end{tabu} \
\\end{figure} \
\\end{document} "),

}
}