jsx.pyā¢2.69 kB
"""
pygments.lexers.jsx
~~~~~~~~~~~~~~~~~~~
Lexers for JSX (React) and TSX (TypeScript flavor).
:copyright: Copyright 2006-2025 by the Pygments team, see AUTHORS.
:license: BSD, see LICENSE for details.
"""
import re
from pygments.lexer import bygroups, default, include, inherit
from pygments.lexers.javascript import JavascriptLexer, TypeScriptLexer
from pygments.token import Name, Operator, Punctuation, String, Text, \
Whitespace
__all__ = ['JsxLexer', 'TsxLexer']
_JSX_RULES = {
"jsx": [
(r"</?>", Punctuation), # JSXFragment <>|</>
(r"(<)(\w+)(\.?)", bygroups(Punctuation, Name.Tag, Punctuation), "tag"),
(
r"(</)(\w+)(>)",
bygroups(Punctuation, Name.Tag, Punctuation),
),
(
r"(</)(\w+)",
bygroups(Punctuation, Name.Tag),
"fragment",
), # Same for React.Context
],
"tag": [
(r"\s+", Whitespace),
(r"([\w-]+)(\s*)(=)(\s*)", bygroups(Name.Attribute, Whitespace, Operator, Whitespace), "attr"),
(r"[{}]+", Punctuation),
(r"[\w\.]+", Name.Attribute),
(r"(/?)(\s*)(>)", bygroups(Punctuation, Text, Punctuation), "#pop"),
],
"fragment": [
(r"(.)(\w+)", bygroups(Punctuation, Name.Attribute)),
(r"(>)", bygroups(Punctuation), "#pop"),
],
"attr": [
(r"\{", Punctuation, "expression"),
(r'".*?"', String, "#pop"),
(r"'.*?'", String, "#pop"),
default("#pop"),
],
"expression": [
(r"\{", Punctuation, "#push"),
(r"\}", Punctuation, "#pop"),
include("root"),
],
}
class JsxLexer(JavascriptLexer):
"""For JavaScript Syntax Extension (JSX).
"""
name = "JSX"
aliases = ["jsx", "react"]
filenames = ["*.jsx", "*.react"]
mimetypes = ["text/jsx", "text/typescript-jsx"]
url = "https://facebook.github.io/jsx/"
version_added = '2.17'
flags = re.MULTILINE | re.DOTALL
# Use same tokens as `JavascriptLexer`, but with tags and attributes support
tokens = {
"root": [
include("jsx"),
inherit,
],
**_JSX_RULES}
class TsxLexer(TypeScriptLexer):
"""For TypeScript with embedded JSX
"""
name = "TSX"
aliases = ["tsx"]
filenames = ["*.tsx"]
mimetypes = ["text/typescript-tsx"]
url = "https://www.typescriptlang.org/docs/handbook/jsx.html"
version_added = '2.19'
flags = re.MULTILINE | re.DOTALL
# Use same tokens as `TypescriptLexer`, but with tags and attributes support
tokens = {
"root": [
include("jsx"),
inherit,
],
**_JSX_RULES}