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207863261c
Summary:
The syntax highlighting feature so far is mutually exclusive with the lldb feature
that marks the current column in the line by underlining it via an ANSI color code.
Meaning that if you enable one, the other is automatically disabled by LLDB.
This was caused by the fact that both features inserted color codes into the the
source code and were likely to interfere with each other (which would result
in a broken source code printout to the user).
This patch moves the cursor code into the highlighting framework, which provides
the same feature to the user in normal non-C source code. For any source code
that is highlighted by Clang, we now also have cursor marking for the whole token
that is under the current source location. E.g., before we underlined only the '!' in the
expression '1 != 2', but now the whole token '!=' is underlined. The same for function
calls and so on. Below you can see two examples where we before only underlined
the first character of the token, but now underline the whole token.
{F7075400}
{F7075414}
It also simplifies the DisplaySourceLines method in the SourceManager as most of
the code in there was essentially just for getting this column marker to work as
a FormatEntity.
Reviewers: aprantl
Reviewed By: aprantl
Subscribers: lldb-commits
Differential Revision: https://reviews.llvm.org/D51466
llvm-svn: 341003
258 lines
10 KiB
Python
258 lines
10 KiB
Python
"""
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Test lldb core component: SourceManager.
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Test cases:
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o test_display_source_python:
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Test display of source using the SBSourceManager API.
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o test_modify_source_file_while_debugging:
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Test the caching mechanism of the source manager.
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"""
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from __future__ import print_function
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import re
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import lldb
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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def ansi_underline_surround_regex(inner_regex_text):
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# return re.compile(r"\[4m%s\[0m" % inner_regex_text)
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return "4.+\033\\[4m%s\033\\[0m" % inner_regex_text
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def ansi_color_surround_regex(inner_regex_text):
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return "\033\\[3[0-7]m%s\033\\[0m" % inner_regex_text
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class SourceManagerTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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NO_DEBUG_INFO_TESTCASE = True
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Find the line number to break inside main().
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self.file = self.getBuildArtifact("main-copy.c")
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self.line = line_number("main.c", '// Set break point at this line.')
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def get_expected_stop_column_number(self):
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"""Return the 1-based column number of the first non-whitespace
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character in the breakpoint source line."""
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stop_line = get_line(self.file, self.line)
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# The number of spaces that must be skipped to get to the first non-
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# whitespace character --- where we expect the debugger breakpoint
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# column to be --- is equal to the number of characters that get
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# stripped off the front when we lstrip it, plus one to specify
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# the character column after the initial whitespace.
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return len(stop_line) - len(stop_line.lstrip()) + 1
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def do_display_source_python_api(self, use_color, needle_regex, highlight_source=False):
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self.build()
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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target = self.dbg.CreateTarget(exe)
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self.assertTrue(target, VALID_TARGET)
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# Launch the process, and do not stop at the entry point.
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args = None
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envp = None
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process = target.LaunchSimple(
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args, envp, self.get_process_working_directory())
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self.assertIsNotNone(process)
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#
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# Exercise Python APIs to display source lines.
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#
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# Setup whether we should use ansi escape sequences, including color
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# and styles such as underline.
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self.dbg.SetUseColor(use_color)
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# Disable syntax highlighting if needed.
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self.runCmd("settings set highlight-source " + str(highlight_source).lower())
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filespec = lldb.SBFileSpec(self.file, False)
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source_mgr = self.dbg.GetSourceManager()
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# Use a string stream as the destination.
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stream = lldb.SBStream()
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column = self.get_expected_stop_column_number()
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context_before = 2
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context_after = 2
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current_line_prefix = "=>"
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source_mgr.DisplaySourceLinesWithLineNumbersAndColumn(
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filespec, self.line, column, context_before, context_after,
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current_line_prefix, stream)
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# 2
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# 3 int main(int argc, char const *argv[]) {
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# => 4 printf("Hello world.\n"); // Set break point at this line.
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# 5 return 0;
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# 6 }
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self.expect(stream.GetData(), "Source code displayed correctly:\n" + stream.GetData(),
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exe=False,
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patterns=['=> %d.*Hello world' % self.line,
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needle_regex])
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# Boundary condition testings for SBStream(). LLDB should not crash!
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stream.Print(None)
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stream.RedirectToFile(None, True)
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@add_test_categories(['pyapi'])
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def test_display_source_python_dumb_terminal(self):
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"""Test display of source using the SBSourceManager API, using a
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dumb terminal and thus no color support (the default)."""
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use_color = False
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self.do_display_source_python_api(use_color, r"\s+\^")
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@add_test_categories(['pyapi'])
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def test_display_source_python_ansi_terminal(self):
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"""Test display of source using the SBSourceManager API, using a
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dumb terminal and thus no color support (the default)."""
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use_color = True
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underline_regex = ansi_underline_surround_regex(r"printf")
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self.do_display_source_python_api(use_color, underline_regex)
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@add_test_categories(['pyapi'])
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def test_display_source_python_ansi_terminal_syntax_highlighting(self):
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"""Test display of source using the SBSourceManager API and check for
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the syntax highlighted output"""
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use_color = True
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syntax_highlighting = True;
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# Just pick 'int' as something that should be colored.
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color_regex = ansi_color_surround_regex("int")
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self.do_display_source_python_api(use_color, color_regex, syntax_highlighting)
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# Same for 'char'.
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color_regex = ansi_color_surround_regex("char")
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self.do_display_source_python_api(use_color, color_regex, syntax_highlighting)
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# Test that we didn't color unrelated identifiers.
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self.do_display_source_python_api(use_color, r" main\(", syntax_highlighting)
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self.do_display_source_python_api(use_color, r"\);", syntax_highlighting)
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def test_move_and_then_display_source(self):
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"""Test that target.source-map settings work by moving main.c to hidden/main.c."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Move main.c to hidden/main.c.
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hidden = self.getBuildArtifact("hidden")
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lldbutil.mkdir_p(hidden)
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main_c_hidden = os.path.join(hidden, "main-copy.c")
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os.rename(self.file, main_c_hidden)
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if self.TraceOn():
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system([["ls"]])
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system([["ls", "hidden"]])
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# Set source remapping with invalid replace path and verify we get an
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# error
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self.expect(
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"settings set target.source-map /a/b/c/d/e /q/r/s/t/u",
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error=True,
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substrs=['''error: the replacement path doesn't exist: "/q/r/s/t/u"'''])
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# Set target.source-map settings.
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self.runCmd("settings set target.source-map %s %s" %
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(self.getBuildDir(), hidden))
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# And verify that the settings work.
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self.expect("settings show target.source-map",
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substrs=[self.getBuildDir(), hidden])
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# Display main() and verify that the source mapping has been kicked in.
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self.expect("source list -n main", SOURCE_DISPLAYED_CORRECTLY,
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substrs=['Hello world'])
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def test_modify_source_file_while_debugging(self):
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"""Modify a source file while debugging the executable."""
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self.build()
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exe = self.getBuildArtifact("a.out")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self, "main-copy.c", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'main-copy.c:%d' % self.line,
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'stop reason = breakpoint'])
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# Display some source code.
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self.expect(
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"source list -f main-copy.c -l %d" %
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self.line,
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SOURCE_DISPLAYED_CORRECTLY,
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substrs=['Hello world'])
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# The '-b' option shows the line table locations from the debug information
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# that indicates valid places to set source level breakpoints.
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# The file to display is implicit in this case.
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self.runCmd("source list -l %d -c 3 -b" % self.line)
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output = self.res.GetOutput().splitlines()[0]
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# If the breakpoint set command succeeded, we should expect a positive number
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# of breakpoints for the current line, i.e., self.line.
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import re
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m = re.search('^\[(\d+)\].*// Set break point at this line.', output)
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if not m:
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self.fail("Fail to display source level breakpoints")
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self.assertTrue(int(m.group(1)) > 0)
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# Read the main.c file content.
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with io.open(self.file, 'r', newline='\n') as f:
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original_content = f.read()
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if self.TraceOn():
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print("original content:", original_content)
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# Modify the in-memory copy of the original source code.
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new_content = original_content.replace('Hello world', 'Hello lldb', 1)
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# Modify the source code file.
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with io.open(self.file, 'w', newline='\n') as f:
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time.sleep(1)
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f.write(new_content)
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if self.TraceOn():
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print("new content:", new_content)
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print(
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"os.path.getmtime() after writing new content:",
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os.path.getmtime(self.file))
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# Display the source code again. We should see the updated line.
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self.expect(
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"source list -f main-copy.c -l %d" %
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self.line,
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SOURCE_DISPLAYED_CORRECTLY,
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substrs=['Hello lldb'])
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def test_set_breakpoint_with_absolute_path(self):
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self.build()
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hidden = self.getBuildArtifact("hidden")
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lldbutil.mkdir_p(hidden)
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self.runCmd("settings set target.source-map %s %s" %
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(self.getBuildDir(), hidden))
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exe = self.getBuildArtifact("a.out")
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main = os.path.join(self.getBuildDir(), "hidden", "main-copy.c")
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line(
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self, main, self.line, num_expected_locations=1, loc_exact=False)
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self.runCmd("run", RUN_SUCCEEDED)
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs=['stopped',
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'main-copy.c:%d' % self.line,
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'stop reason = breakpoint'])
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