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WIP: Add Typescript #8

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WIP: Add Typescript #8

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114 changes: 66 additions & 48 deletions jsx/lexer.py
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Original file line number Diff line number Diff line change
@@ -1,63 +1,81 @@
import re

from pygments.lexer import bygroups, include, default
from pygments.lexers.javascript import JavascriptLexer
from pygments.lexers.javascript import JavascriptLexer, TypeScriptLexer
from pygments.token import Name, Operator, Punctuation, String, Text


# Use same tokens as `JavascriptLexer`, but with tags and attributes support
TOKENS = JavascriptLexer.tokens
TOKENS.update(
{
"jsx": [
(
r"(<)(/?)(>)",
bygroups(Punctuation, Punctuation, Punctuation),
), # JSXFragment <>|</>
(r"(<)([\w]+)(\.?)", bygroups(Punctuation, Name.Tag, Punctuation), "tag"),
(
r"(<)(/)([\w]+)(>)",
bygroups(Punctuation, Punctuation, Name.Tag, Punctuation),
),
(
r"(<)(/)([\w]+)",
bygroups(Punctuation, Punctuation, Name.Tag),
"fragment",
), # Same for React.Context
],
"tag": [
(r"\s+", Text),
(r"([\w]+\s*)(=)(\s*)", bygroups(Name.Attribute, Operator, Text), "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": [
("{", Punctuation, "expression"),
('".*?"', String, "#pop"),
("'.*?'", String, "#pop"),
default("#pop"),
],
"expression": [
("{", Punctuation, "#push"),
("}", Punctuation, "#pop"),
include("root"),
],
}
)
TOKENS["root"].insert(0, include("jsx"))
# Add tags and attributes support to existing tokens
def build_react_tokens(tokens):
tokens.update(
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This will need to be fixed to avoid mutating dictionaries that don’t belong to us (see #20).

{
"jsx": [
(
r"(<)(/?)(>)",
bygroups(Punctuation, Punctuation, Punctuation),
), # JSXFragment <>|</>
(r"(<)([\w]+)(\.?)", bygroups(Punctuation,
Name.Tag, Punctuation), "tag"),
(
r"(<)(/)([\w]+)(>)",
bygroups(Punctuation, Punctuation, Name.Tag, Punctuation),
),
(
r"(<)(/)([\w]+)",
bygroups(Punctuation, Punctuation, Name.Tag),
"fragment",
), # Same for React.Context
],
"tag": [
(r"\s+", Text),
(r"([\w]+\s*)(=)(\s*)",
bygroups(Name.Attribute, Operator, Text), "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": [
("{", Punctuation, "expression"),
('".*?"', String, "#pop"),
("'.*?'", String, "#pop"),
default("#pop"),
],
"expression": [
("{", Punctuation, "#push"),
("}", Punctuation, "#pop"),
include("root"),
],
}
)
tokens["root"].insert(0, include("jsx"))
return tokens


JSX_TOKENS = build_react_tokens(JavascriptLexer.tokens)
TSX_TOKENS = build_react_tokens(TypeScriptLexer.tokens)


class JsxLexer(JavascriptLexer):
name = "react"
aliases = ["jsx", "react"]
filenames = ["*.jsx", "*.react"]
mimetypes = ["text/jsx", "text/typescript-jsx"]
mimetypes = ["text/jsx"]

flags = re.MULTILINE | re.DOTALL | re.UNICODE

tokens = JSX_TOKENS


class TsxLexer(TypeScriptLexer):
name = "react-typescript"
aliases = ["tsx", "react-typescript"]
filenames = ["*.tsx"]
mimetypes = ["text/tsx", "text/typescript-jsx"]

flags = re.MULTILINE | re.DOTALL | re.UNICODE

tokens = TOKENS
tokens = TSX_TOKENS