mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
84 lines
3.1 KiB
Python
84 lines
3.1 KiB
Python
import base64
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import docutils # pragma pylint: disable=import-error
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from sphinx.util import logging # pragma pylint: disable=import-error
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# NOTE: 2000 should generally be safe for all browsers, while 8000 for most of them.
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MAX_SAFE_URL_LENGTH = 10000
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logger = logging.getLogger(__name__)
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def insert_node_before(child, new_sibling):
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assert child in child.parent.children
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for position, node in enumerate(child.parent.children):
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if node == child:
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child.parent.insert(position, new_sibling)
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break
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def remix_code_url(source_code, language, solidity_version):
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# NOTE: base64 encoded data may contain +, = and / characters. Remix seems to handle them just
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# fine without any escaping.
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base64_encoded_source = base64.b64encode(source_code.encode('utf-8')).decode('ascii')
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return f"https://remix.ethereum.org/?language={language}&version={solidity_version}&code={base64_encoded_source}"
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def build_remix_link_node(url):
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link_icon_node = docutils.nodes.inline()
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link_icon_node.set_class('link-icon')
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link_text_node = docutils.nodes.inline(text="open in Remix")
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link_text_node.set_class('link-text')
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reference_node = docutils.nodes.reference('', '', internal=False, refuri=url)
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reference_node.set_class('remix-link')
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reference_node += [link_icon_node, link_text_node]
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paragraph_node = docutils.nodes.paragraph()
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paragraph_node.set_class('remix-link-container')
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paragraph_node += reference_node
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return paragraph_node
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def insert_remix_link(app, doctree, solidity_version):
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if app.builder.format != 'html' or app.builder.name == 'epub':
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return
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for literal_block_node in doctree.traverse(docutils.nodes.literal_block):
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assert 'language' in literal_block_node.attributes
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language = literal_block_node.attributes['language'].lower()
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if language in ['solidity', 'yul']:
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text_nodes = list(literal_block_node.traverse(docutils.nodes.Text))
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assert len(text_nodes) == 1
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remix_url = remix_code_url(text_nodes[0], language, solidity_version)
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url_length = len(remix_url.encode('utf-8'))
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if url_length > MAX_SAFE_URL_LENGTH:
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logger.warning(
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"Remix URL generated from the code snippet exceeds the maximum safe URL length "
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" (%d > %d bytes).",
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url_length,
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MAX_SAFE_URL_LENGTH,
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location=(literal_block_node.source, literal_block_node.line),
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)
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insert_node_before(literal_block_node, build_remix_link_node(remix_url))
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def setup(app):
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# NOTE: Need to access _raw_config here because setup() runs before app.config is ready.
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solidity_version = app.config._raw_config['version'] # pylint: disable=protected-access
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app.connect(
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'doctree-resolved',
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lambda app, doctree, docname: insert_remix_link(app, doctree, solidity_version)
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)
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return {
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'version': solidity_version,
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'parallel_read_safe': True,
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'parallel_write_safe': True,
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}
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