How to use the pylatexenc.latexwalker.LatexGroupNode function in pylatexenc
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phfaist / pylatexenc / test / test_latexwalker.py View on Github 
good_parsed_structure = lambda ps1, ps2a, ps2b, ps3: [
LatexMacroNode(
parsing_state=ps1,
macroname='mbox',
nodeargd=macrospec.ParsedMacroArgs(argspec='{', argnlist=[
LatexGroupNode(parsing_state=ps2a,
delimiters=('{', '}'),
nodelist=[
LatexCharsNode(parsing_state=ps2a,
chars='Prob',
pos=p-29+37,len=41-37)
],
pos=p-29+36,len=42-36),
]),
pos=p-29+31,len=42-31),
LatexCharsNode(parsing_state=ps1,
chars='(',
pos=p-29+42,len=1),
LatexMacroNode(
parsing_state=ps1,
macroname='mbox',
nodeargd=macrospec.ParsedMacroArgs(argspec='{', argnlist=[def test_oarg_0(self):
lw = latexwalker.LatexWalker(r'\cmd[ab] xyz')
s = MacroStandardArgsParser('[')
parsing_state = lw.make_parsing_state()
(argd, p, l) = s.parse_args(lw, len(r'\cmd'), parsing_state=parsing_state)
self.assertPMAEqual(
argd,
ParsedMacroArgs(argspec='[', argnlist=[
LatexGroupNode(
parsing_state=parsing_state,
delimiters=('[', ']'),
nodelist=[
LatexCharsNode(parsing_state=parsing_state,
chars='ab',
pos=5,len=2)
],
pos=4,len=4)
])def test_marg_0(self):
lw = latexwalker.LatexWalker(r'{ab}')
s = MacroStandardArgsParser('{')
parsing_state = lw.make_parsing_state()
(argd, p, l) = s.parse_args(lw, 0, parsing_state=parsing_state)
self.assertPMAEqual(
argd,
ParsedMacroArgs(
argspec='{',
argnlist=[ LatexGroupNode(
parsing_state=parsing_state,
delimiters=('{','}'),
nodelist=[
LatexCharsNode(parsing_state=parsing_state,
chars='ab',
pos=1,len=2)
],
pos=0,len=4)
])macroname='item',
nodeargd=macrospec.ParsedMacroArgs(argspec='[', argnlist=[None]),
macro_post_space=' ',
pos=p+23, len=6),
LatexCharsNode(parsing_state=parsing_state,
chars='Hi there! ',
pos=p+23+6, len=17-6),
LatexCommentNode(parsing_state=parsing_state,
comment=' here goes a comment',
comment_post_space='\n ',
pos=p+23+17, len=38-17+2),
LatexMacroNode(
parsing_state=parsing_state,
macroname='item',
nodeargd=macrospec.ParsedMacroArgs(argspec='[', argnlist=[
LatexGroupNode(
parsing_state=parsing_state,
delimiters=('[', ']'),
nodelist=[
LatexCharsNode(parsing_state=parsing_state,
chars='a',
pos=p+23+39+7, len=1)
],
pos=p+23+39+6, len=3)
]),
pos=p+23+39+1,
len=9-1
),
LatexCharsNode(parsing_state=parsing_state,
chars=' Hello! @@@\n ',
pos=p+23+39+9,
len=22+5-9)([
LatexCharsNode(parsing_state=parsing_state,
chars='\n',
pos=0, len=1),
LatexMacroNode(parsing_state=parsing_state,
macroname='documentclass',
nodeargd=macrospec.ParsedMacroArgs(argspec='[{', argnlist=[
LatexGroupNode(parsing_state=parsing_state,
delimiters=('[', ']'),
nodelist=[
LatexCharsNode(parsing_state=parsing_state,
chars='stuff',
pos=1+15,len=20-15),
],
pos=1+14,len=21-14),
LatexGroupNode(parsing_state=parsing_state,
delimiters=('{', '}'),
nodelist=[
LatexCharsNode(parsing_state=parsing_state,
chars='docclass',
pos=1+22,len=30-22),
],
pos=1+21,len=31-21)
]),
pos=1+0,len=31),
LatexCharsNode(parsing_state=parsing_state,
chars='\n\n',
pos=1+31, len=2),
], p, 34))lw = LatexWalker(latextext, tolerant_parsing=True)
parsing_state = lw.make_parsing_state()
self.assertEqual(lw.get_latex_expression(pos=0, parsing_state=parsing_state),
(LatexCharsNode(parsing_state=parsing_state,
chars='T',
pos=0, len=1),0,1,))
p = latextext.find(r'\`')
self.assertEqual(lw.get_latex_expression(pos=p, parsing_state=parsing_state),
(LatexMacroNode(parsing_state=parsing_state,
macroname='`',
nodeargd=None, pos=p, len=2),p,2,))
p = latextext.find(r'{')
self.assertEqual(lw.get_latex_expression(pos=p, parsing_state=parsing_state),
(LatexGroupNode(parsing_state=parsing_state,
nodelist=[
LatexCharsNode(parsing_state=parsing_state,
chars='bold text',
pos=p+1,len=9)
],
pos=p, len=11),
p,11,))
p = latextext.find(r'%')-2 # check: correctly skips comments also after space
self.assertEqual(lw.get_latex_expression(pos=p, parsing_state=parsing_state),
(LatexMacroNode(parsing_state=parsing_state,
macroname='item',
nodeargd=None,
pos=p+2+len('% here goes a comment\n'),
len=5),
p+2+len('% here goes a comment\n'),5,))
# check correct behavior if directly on brace closelatextext = r'''Text and \`accent and \textbf{bold text} and $\vec b$ more stuff for Fran\c cois
\begin{enumerate}[(i)]
\item Hi there! % here goes a comment
\item[a] Hello! @@@
\end{enumerate}
Indeed thanks to \cite[Lemma 3]{Author}, we know that...
'''
lw = LatexWalker(latextext, tolerant_parsing=False)
parsing_state = lw.make_parsing_state()
p = latextext.find(r'\textbf')+len(r'\textbf')
self.assertEqual(lw.get_latex_maybe_optional_arg(pos=p, parsing_state=parsing_state), None)
p = latextext.find(r'\cite')+len(r'\cite')
self.assertEqual(lw.get_latex_maybe_optional_arg(pos=p, parsing_state=parsing_state),
(LatexGroupNode(
parsing_state=parsing_state,
delimiters=('[', ']'),
nodelist=[
LatexCharsNode(
parsing_state=parsing_state,
chars='Lemma 3',
pos=p+1,
len=len('Lemma 3'),
)
],
pos=p,
len=9
),p,9,))def test_get_latex_braced_group(self):
latextext = r'''Text and \`accent and \textbf{bold text} and $\vec b$ more stuff for Fran\c cois
\begin{enumerate}[(i)]
\item Hi there! % here goes a comment
\item[a] Hello! @@@
\end{enumerate}
Indeed thanks to \cite[Lemma 3]{Author}, we know that...
Also: {\itshape some italic text}.
'''
lw = LatexWalker(latextext, tolerant_parsing=False)
parsing_state = lw.make_parsing_state()
p = latextext.find(r'Also: {')+len('Also:') # points on space after 'Also:'
good_parsed_structure = \
( LatexGroupNode(
parsing_state=parsing_state,
delimiters=('{','}'),
nodelist=[
LatexMacroNode(parsing_state=parsing_state,
macroname='itshape',
macro_post_space=' ',
pos=p+2,
len=len(r'\itshape ')),
LatexCharsNode(parsing_state=parsing_state,
chars='some italic text',
pos=(p+16-5),
len=32-16)
],
pos=p+1,
len=len(r'{\itshape some italic text}')
),def _groupnodecontents_to_text(self, groupnode):
if groupnode is None:
return ''
if not groupnode.isNodeType(latexwalker.LatexGroupNode):
return self.node_to_text(groupnode)
return self.nodelist_to_text(groupnode.nodelist)pylatexenc
Simple LaTeX parser providing latex-to-unicode and unicode-to-latex conversion
Package Health Score
55 / 100Popular pylatexenc functions
- pylatexenc.latex2text.EnvironmentTextSpec
- pylatexenc.latex2text.LatexNodes2Text
- pylatexenc.latex2text.MacroTextSpec
- pylatexenc.latex2text.SpecialsTextSpec
- pylatexenc.latexencode.UnicodeToLatexEncoder
- pylatexenc.latexencode.utf8tolatex
- pylatexenc.latexwalker
- pylatexenc.latexwalker.__init__.LatexToken
- pylatexenc.latexwalker.__init__.LatexWalkerEndOfStream
- pylatexenc.latexwalker.__init__.LatexWalkerParseError
- pylatexenc.latexwalker.LatexCharsNode
- pylatexenc.latexwalker.LatexGroupNode
- pylatexenc.latexwalker.LatexMacroNode
- pylatexenc.latexwalker.LatexWalker
- pylatexenc.macrospec.LatexContextDb
- pylatexenc.macrospec.MacroSpec
- pylatexenc.macrospec.MacroStandardArgsParser
- pylatexenc.macrospec.ParsedMacroArgs
- pylatexenc.macrospec.std_environment
- pylatexenc.macrospec.std_macro