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Merge pull request #572 from encode/tweak-exception-debug-html 

Tweak exception debug HTML
This commit is contained in:
Tom Christie 2019-07-09 14:57:37 +01:00 committed by GitHub
parent 27c073fd3c a440047afb
commit 8a2ae41e79
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 6 deletions
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24
starlette/middleware/errors.py
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@ -52,6 +52,11 @@ p {
.collapsed {
display: none;
}
.source-code {
font-family: courier;
font-size: small;
padding-bottom: 10px;
}
"""
JS = """
@ -96,9 +101,9 @@ FRAME_TEMPLATE = """
<p class="frame-filename"><span class="debug-filename frame-line">File {frame_filename}</span>,
line <i>{frame_lineno}</i>,
in <b>{frame_name}</b>
<span class="collapse-btn" data-frame-id="{frame_filename}-{frame_lineno}" onclick="collapse(this)">&#8210;</span>
<span class="collapse-btn" data-frame-id="{frame_filename}-{frame_lineno}" onclick="collapse(this)">{collapse_button}</span>
</p>
<div id="{frame_filename}-{frame_lineno}">{code_context}</div>
<div id="{frame_filename}-{frame_lineno}" class="source-code {collapsed}">{code_context}</div>
</div>
"""
@ -183,7 +188,9 @@ class ServerErrorMiddleware:
return LINE.format(**values)
return CENTER_LINE.format(**values)
def generate_frame_html(self, frame: inspect.FrameInfo, center_lineno: int) -> str:
def generate_frame_html(
self, frame: inspect.FrameInfo, center_lineno: int, is_collapsed: bool
) -> str:
code_context = "".join(
self.format_line(context_position, line, frame.lineno, center_lineno)
for context_position, line in enumerate(frame.code_context)
@ -194,6 +201,8 @@ class ServerErrorMiddleware:
"frame_lineno": frame.lineno,
"frame_name": frame.function,
"code_context": code_context,
"collapsed": "collapsed" if is_collapsed else "",
"collapse_button": "+" if is_collapsed else "&#8210;",
}
return FRAME_TEMPLATE.format(**values)
@ -206,9 +215,12 @@ class ServerErrorMiddleware:
)
center_lineno = int((limit - 1) / 2)
exc_html = "".join(
self.generate_frame_html(frame, center_lineno) for frame in reversed(frames)
)
exc_html = ""
is_collapsed = False
for frame in reversed(frames):
exc_html += self.generate_frame_html(frame, center_lineno, is_collapsed)
is_collapsed = True
error = f"{traceback_obj.exc_type.__name__}: {traceback_obj}"
return TEMPLATE.format(styles=STYLES, js=JS, error=error, exc_html=exc_html)