forgejo/vendor/github.com/alecthomas/chroma/lexers/p/python.go
mrsdizzie af7ffaa279
Server-side syntax highlighting for all code (#12047)
* Server-side syntax hilighting for all code

This PR does a few things:

* Remove all traces of highlight.js
* Use chroma library to provide fast syntax hilighting directly on the server
* Provide syntax hilighting for diffs
* Re-style both unified and split diffs views
* Add custom syntax hilighting styling for both regular and arc-green

Fixes #7729
Fixes #10157
Fixes #11825
Fixes #7728
Fixes #3872
Fixes #3682

And perhaps gets closer to #9553

* fix line marker

* fix repo search

* Fix single line select

* properly load settings

* npm uninstall highlight.js

* review suggestion

* code review

* forgot to call function

* fix test

* Apply suggestions from code review

suggestions from @silverwind thanks

Co-authored-by: silverwind <me@silverwind.io>

* code review

* copy/paste error

* Use const for highlight size limit

* Update web_src/less/_repository.less

Co-authored-by: Lauris BH <lauris@nix.lv>

* update size limit to 1MB and other styling tweaks

* fix highlighting for certain diff sections

* fix test

* add worker back as suggested

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: Lauris BH <lauris@nix.lv>
2020-07-01 00:34:03 +03:00

138 lines
8 KiB
Go
Vendored

package p
import (
. "github.com/alecthomas/chroma" // nolint
"github.com/alecthomas/chroma/lexers/internal"
)
// Python lexer.
var Python = internal.Register(MustNewLexer(
&Config{
Name: "Python",
Aliases: []string{"python", "py", "sage"},
Filenames: []string{"*.py", "*.pyw", "*.sc", "SConstruct", "SConscript", "*.tac", "*.sage"},
MimeTypes: []string{"text/x-python", "application/x-python"},
},
Rules{
"root": {
{`\n`, Text, nil},
{`^(\s*)([rRuUbB]{,2})("""(?:.|\n)*?""")`, ByGroups(Text, LiteralStringAffix, LiteralStringDoc), nil},
{`^(\s*)([rRuUbB]{,2})('''(?:.|\n)*?''')`, ByGroups(Text, LiteralStringAffix, LiteralStringDoc), nil},
{`[^\S\n]+`, Text, nil},
{`\A#!.+$`, CommentHashbang, nil},
{`#.*$`, CommentSingle, nil},
{`[]{}:(),;[]`, Punctuation, nil},
{`\\\n`, Text, nil},
{`\\`, Text, nil},
{`(in|is|and|or|not)\b`, OperatorWord, nil},
{`!=|==|<<|>>|[-~+/*%=<>&^|.]`, Operator, nil},
Include("keywords"),
{`(def)((?:\s|\\\s)+)`, ByGroups(Keyword, Text), Push("funcname")},
{`(class)((?:\s|\\\s)+)`, ByGroups(Keyword, Text), Push("classname")},
{`(from)((?:\s|\\\s)+)`, ByGroups(KeywordNamespace, Text), Push("fromimport")},
{`(import)((?:\s|\\\s)+)`, ByGroups(KeywordNamespace, Text), Push("import")},
Include("builtins"),
Include("magicfuncs"),
Include("magicvars"),
Include("backtick"),
{`([rR]|[uUbB][rR]|[rR][uUbB])(""")`, ByGroups(LiteralStringAffix, LiteralStringDouble), Push("tdqs")},
{`([rR]|[uUbB][rR]|[rR][uUbB])(''')`, ByGroups(LiteralStringAffix, LiteralStringSingle), Push("tsqs")},
{`([rR]|[uUbB][rR]|[rR][uUbB])(")`, ByGroups(LiteralStringAffix, LiteralStringDouble), Push("dqs")},
{`([rR]|[uUbB][rR]|[rR][uUbB])(')`, ByGroups(LiteralStringAffix, LiteralStringSingle), Push("sqs")},
{`([uUbB]?)(""")`, ByGroups(LiteralStringAffix, LiteralStringDouble), Combined("stringescape", "tdqs")},
{`([uUbB]?)(''')`, ByGroups(LiteralStringAffix, LiteralStringSingle), Combined("stringescape", "tsqs")},
{`([uUbB]?)(")`, ByGroups(LiteralStringAffix, LiteralStringDouble), Combined("stringescape", "dqs")},
{`([uUbB]?)(')`, ByGroups(LiteralStringAffix, LiteralStringSingle), Combined("stringescape", "sqs")},
Include("name"),
Include("numbers"),
},
"keywords": {
{Words(``, `\b`, `assert`, `break`, `continue`, `del`, `elif`, `else`, `except`, `exec`, `finally`, `for`, `global`, `if`, `lambda`, `pass`, `print`, `raise`, `return`, `try`, `while`, `yield`, `yield from`, `as`, `with`), Keyword, nil},
},
"builtins": {
{Words(`(?<!\.)`, `\b`, `__import__`, `abs`, `all`, `any`, `apply`, `basestring`, `bin`, `bool`, `buffer`, `bytearray`, `bytes`, `callable`, `chr`, `classmethod`, `cmp`, `coerce`, `compile`, `complex`, `delattr`, `dict`, `dir`, `divmod`, `enumerate`, `eval`, `execfile`, `exit`, `file`, `filter`, `float`, `frozenset`, `getattr`, `globals`, `hasattr`, `hash`, `hex`, `id`, `input`, `int`, `intern`, `isinstance`, `issubclass`, `iter`, `len`, `list`, `locals`, `long`, `map`, `max`, `min`, `next`, `object`, `oct`, `open`, `ord`, `pow`, `property`, `range`, `raw_input`, `reduce`, `reload`, `repr`, `reversed`, `round`, `set`, `setattr`, `slice`, `sorted`, `staticmethod`, `str`, `sum`, `super`, `tuple`, `type`, `unichr`, `unicode`, `vars`, `xrange`, `zip`), NameBuiltin, nil},
{`(?<!\.)(self|None|Ellipsis|NotImplemented|False|True|cls)\b`, NameBuiltinPseudo, nil},
{Words(`(?<!\.)`, `\b`, `ArithmeticError`, `AssertionError`, `AttributeError`, `BaseException`, `DeprecationWarning`, `EOFError`, `EnvironmentError`, `Exception`, `FloatingPointError`, `FutureWarning`, `GeneratorExit`, `IOError`, `ImportError`, `ImportWarning`, `IndentationError`, `IndexError`, `KeyError`, `KeyboardInterrupt`, `LookupError`, `MemoryError`, `NameError`, `NotImplemented`, `NotImplementedError`, `OSError`, `OverflowError`, `OverflowWarning`, `PendingDeprecationWarning`, `ReferenceError`, `RuntimeError`, `RuntimeWarning`, `StandardError`, `StopIteration`, `SyntaxError`, `SyntaxWarning`, `SystemError`, `SystemExit`, `TabError`, `TypeError`, `UnboundLocalError`, `UnicodeDecodeError`, `UnicodeEncodeError`, `UnicodeError`, `UnicodeTranslateError`, `UnicodeWarning`, `UserWarning`, `ValueError`, `VMSError`, `Warning`, `WindowsError`, `ZeroDivisionError`), NameException, nil},
},
"magicfuncs": {
{Words(``, `\b`, `__abs__`, `__add__`, `__and__`, `__call__`, `__cmp__`, `__coerce__`, `__complex__`, `__contains__`, `__del__`, `__delattr__`, `__delete__`, `__delitem__`, `__delslice__`, `__div__`, `__divmod__`, `__enter__`, `__eq__`, `__exit__`, `__float__`, `__floordiv__`, `__ge__`, `__get__`, `__getattr__`, `__getattribute__`, `__getitem__`, `__getslice__`, `__gt__`, `__hash__`, `__hex__`, `__iadd__`, `__iand__`, `__idiv__`, `__ifloordiv__`, `__ilshift__`, `__imod__`, `__imul__`, `__index__`, `__init__`, `__instancecheck__`, `__int__`, `__invert__`, `__iop__`, `__ior__`, `__ipow__`, `__irshift__`, `__isub__`, `__iter__`, `__itruediv__`, `__ixor__`, `__le__`, `__len__`, `__long__`, `__lshift__`, `__lt__`, `__missing__`, `__mod__`, `__mul__`, `__ne__`, `__neg__`, `__new__`, `__nonzero__`, `__oct__`, `__op__`, `__or__`, `__pos__`, `__pow__`, `__radd__`, `__rand__`, `__rcmp__`, `__rdiv__`, `__rdivmod__`, `__repr__`, `__reversed__`, `__rfloordiv__`, `__rlshift__`, `__rmod__`, `__rmul__`, `__rop__`, `__ror__`, `__rpow__`, `__rrshift__`, `__rshift__`, `__rsub__`, `__rtruediv__`, `__rxor__`, `__set__`, `__setattr__`, `__setitem__`, `__setslice__`, `__str__`, `__sub__`, `__subclasscheck__`, `__truediv__`, `__unicode__`, `__xor__`), NameFunctionMagic, nil},
},
"magicvars": {
{Words(``, `\b`, `__bases__`, `__class__`, `__closure__`, `__code__`, `__defaults__`, `__dict__`, `__doc__`, `__file__`, `__func__`, `__globals__`, `__metaclass__`, `__module__`, `__mro__`, `__name__`, `__self__`, `__slots__`, `__weakref__`), NameVariableMagic, nil},
},
"numbers": {
{`(\d+\.\d*|\d*\.\d+)([eE][+-]?[0-9]+)?j?`, LiteralNumberFloat, nil},
{`\d+[eE][+-]?[0-9]+j?`, LiteralNumberFloat, nil},
{`0[0-7]+j?`, LiteralNumberOct, nil},
{`0[bB][01]+`, LiteralNumberBin, nil},
{`0[xX][a-fA-F0-9]+`, LiteralNumberHex, nil},
{`\d+L`, LiteralNumberIntegerLong, nil},
{`\d+j?`, LiteralNumberInteger, nil},
},
"backtick": {
{"`.*?`", LiteralStringBacktick, nil},
},
"name": {
{`@[\w.]+`, NameDecorator, nil},
{`[a-zA-Z_]\w*`, Name, nil},
},
"funcname": {
Include("magicfuncs"),
{`[a-zA-Z_]\w*`, NameFunction, Pop(1)},
Default(Pop(1)),
},
"classname": {
{`[a-zA-Z_]\w*`, NameClass, Pop(1)},
},
"import": {
{`(?:[ \t]|\\\n)+`, Text, nil},
{`as\b`, KeywordNamespace, nil},
{`,`, Operator, nil},
{`[a-zA-Z_][\w.]*`, NameNamespace, nil},
Default(Pop(1)),
},
"fromimport": {
{`(?:[ \t]|\\\n)+`, Text, nil},
{`import\b`, KeywordNamespace, Pop(1)},
{`None\b`, NameBuiltinPseudo, Pop(1)},
{`[a-zA-Z_.][\w.]*`, NameNamespace, nil},
Default(Pop(1)),
},
"stringescape": {
{`\\([\\abfnrtv"\']|\n|N\{.*?\}|u[a-fA-F0-9]{4}|U[a-fA-F0-9]{8}|x[a-fA-F0-9]{2}|[0-7]{1,3})`, LiteralStringEscape, nil},
},
"strings-single": {
{`%(\(\w+\))?[-#0 +]*([0-9]+|[*])?(\.([0-9]+|[*]))?[hlL]?[E-GXc-giorsux%]`, LiteralStringInterpol, nil},
{`[^\\\'"%\n]+`, LiteralStringSingle, nil},
{`[\'"\\]`, LiteralStringSingle, nil},
{`%`, LiteralStringSingle, nil},
},
"strings-double": {
{`%(\(\w+\))?[-#0 +]*([0-9]+|[*])?(\.([0-9]+|[*]))?[hlL]?[E-GXc-giorsux%]`, LiteralStringInterpol, nil},
{`[^\\\'"%\n]+`, LiteralStringDouble, nil},
{`[\'"\\]`, LiteralStringDouble, nil},
{`%`, LiteralStringDouble, nil},
},
"dqs": {
{`"`, LiteralStringDouble, Pop(1)},
{`\\\\|\\"|\\\n`, LiteralStringEscape, nil},
Include("strings-double"),
},
"sqs": {
{`'`, LiteralStringSingle, Pop(1)},
{`\\\\|\\'|\\\n`, LiteralStringEscape, nil},
Include("strings-single"),
},
"tdqs": {
{`"""`, LiteralStringDouble, Pop(1)},
Include("strings-double"),
{`\n`, LiteralStringDouble, nil},
},
"tsqs": {
{`'''`, LiteralStringSingle, Pop(1)},
Include("strings-single"),
{`\n`, LiteralStringSingle, nil},
},
},
))