Mercurial > hgrepos > Python > libs > pygments-lexer-pseudocode2
changeset 116:9bfd87544902
Use arrows from Supplemental Arrows-A Unicode block where appropriate: better readability
| author | Franz Glasner <fzglas.hg@dom66.de> |
|---|---|
| date | Wed, 06 May 2026 10:05:57 +0200 |
| parents | e1663ac707b0 |
| children | d84f1fd10e64 |
| files | docs/algorithm-ford-fulkerson.pseudocode pygments_lexer_pseudocode2/algpseudocode.py tests/test_algpseudo.py |
| diffstat | 3 files changed, 29 insertions(+), 22 deletions(-) [+] |
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--- a/docs/algorithm-ford-fulkerson.pseudocode Wed May 06 01:31:41 2026 +0200 +++ b/docs/algorithm-ford-fulkerson.pseudocode Wed May 06 10:05:57 2026 +0200 @@ -3,7 +3,7 @@ \INPUTS{Given a network \expr{G = (V, E)} with flow capacity \expr{c}, a source node \expr{s}, and a sink node \expr{t}} \OUTPUT{Compute a flow \expr{f} from \expr{s} to \expr{t} of maximum value} \IS - \TEXT{1. \expr{f(u, v) <- 0} for all edges \expr{(u, v)} + \TEXT{1. \expr{f(u, v) \gets 0} for all edges \expr{(u, v)} 2. While there is a path \expr{p} from \expr{s} to \expr{t} in \expr{G_f}, such that \expr{c_f(u, v) > 0} for all edges \expr{(u, v) ∈ p}: @@ -12,8 +12,8 @@ 2. For each edge \expr{(u, v) ∈ p} - 1. \expr{f(u, v) <- f(u, v) + c_f(p)} \rem Send flow along the path + 1. \expr{f(u, v) \gets f(u, v) + c_f(p)} \rem Send flow along the path - 2. \expr{f(v, u) <- f(v, u) - c_f(p)} \rem The flow might be "returned" later + 2. \expr{f(v, u) \gets f(v, u) - c_f(p)} \rem The flow might be "returned" later } \END ALGORITHM {Ford–Fulkerson}
--- a/pygments_lexer_pseudocode2/algpseudocode.py Wed May 06 01:31:41 2026 +0200 +++ b/pygments_lexer_pseudocode2/algpseudocode.py Wed May 06 10:05:57 2026 +0200 @@ -131,18 +131,23 @@ "TSTATE": SYMBOL_TEXTSTATEMENT, "TEXTBLOCK": SYMBOL_TEXTSTATEMENT, "TBLOCK": SYMBOL_TEXTSTATEMENT, - "<-": "←", - "->": "→", - "=>": "⇒", - "<=": "≤", - ">=": "≥", - "<>": "≠", - "!=": "≠", - ":=": "∶=", # "≔" not recognizable - "=:": "=∶", # "≕", not recognizable - "<=>": "⇔", - "<->": "↔", - "?=": "≟", + "<-": "⟵", # U+27F5: Unicode 3.2 (Supplemental Arrows-A) + "->": "⟶", # U+27F6: Unicode 3.2 (Supplemental Arrows-A) + "<->": "⟷", # U+27F7: Unicode 3.2 (Supplemental Arrows-A) + # "=>": "⟹", # U+27F9: Unicode 3.2 (Supplemental Arrows-A) + # "<=>": "⟺", # U+27FA: Unicode 3.2 (Supplemental Arrows-A) + # "<-": "←", # U+2190: Unicode 1.0 (Arrows) + # "->": "→", # U+2192: Unicode 1.0 (Arrows) + # "<->": "↔", # U+2194: Unicode 1.0 (Arrows) + "=>": "⇒", # U+21D2: Unicode 1.0 (Arrows) + "<=>": "⇔", # U+21D4: Unicode 1.0 (Arrows) + "<=": "≤", # U+2264: Unicode 1.0 (Mathematical Operators) + ">=": "≥", # U+2265: Unicode 1.0 (Mathematical Operators) + "<>": "≠", # U+2260: Unicode 1.0 (Mathematical Operators) + "!=": "≠", # U+2260: Unicode 1.0 (Mathematical Operators) + ":=": "∶=", # "≔" U+2254 not recognizable in my (small) mono font + "=:": "=∶", # "≕" U+2255 not recognizable in my (small) mono font + "?=": "≟", # U+225F: Unicode 1.0 (Mathematical Operators) } def op_translate(toktype): @@ -504,9 +509,11 @@ } def __init__(self, **options): - val = pygments.util.get_bool_opt(options, "no_end", default=False) - self.no_end = val - self.symbol_gets = options.get("gets", "←") + self.no_end = pygments.util.get_bool_opt( + options, "no_end", default=False) + self.symbol_gets = options.get("gets", None) + if self.symbol_gets is None: + self.symbol_gets = self.SYMBOLS["<-"] # Default: "⟵" # U+27F5 LexBase.__init__(self, **options)
--- a/tests/test_algpseudo.py Wed May 06 01:31:41 2026 +0200 +++ b/tests/test_algpseudo.py Wed May 06 10:05:57 2026 +0200 @@ -751,11 +751,11 @@ self.assertTokenStreamEqualComplete( [("Operator", u"⇔"), ("Text", " "), - ("Operator", u"↔"), + ("Operator", u"⟷"), ("Text", " "), - ("Operator", u"←"), + ("Operator", u"⟵"), ("Text", " "), - ("Operator", u"→"), + ("Operator", u"⟶"), ("Text", " "), ("Operator", u"⇒"), ("Text", " "), @@ -879,7 +879,7 @@ self.assertTokenStreamEqualComplete( [("Name.Entity", "a"), ("Text", " "), - ("Operator", "←"), + ("Operator", "⟵"), # U+27F5 (Supplemental Arrows-A) ("Text", " "), ("Number.Integer", "2"), ("Text.Whitespace", "\n"),