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1from __future__ import print_function
2from __future__ import absolute_import
3
4# System modules
5import os
6
7# Third-party modules
8import io
9
10# LLDB modules
11import lldb
12from .lldbtest import *
13from . import configuration
14from . import lldbutil
15from .decorators import *
16
17def source_type(filename):
18    _, extension = os.path.splitext(filename)
19    return {
20        '.c': 'C_SOURCES',
21        '.cpp': 'CXX_SOURCES',
22        '.cxx': 'CXX_SOURCES',
23        '.cc': 'CXX_SOURCES',
24        '.m': 'OBJC_SOURCES',
25        '.mm': 'OBJCXX_SOURCES'
26    }.get(extension, None)
27
28
29class CommandParser:
30
31    def __init__(self):
32        self.breakpoints = []
33
34    def parse_one_command(self, line):
35        parts = line.split('//%')
36
37        command = None
38        new_breakpoint = True
39
40        if len(parts) == 2:
41            command = parts[1].strip()  # take off whitespace
42            new_breakpoint = parts[0].strip() != ""
43
44        return (command, new_breakpoint)
45
46    def parse_source_files(self, source_files):
47        for source_file in source_files:
48            file_handle = io.open(source_file, encoding='utf-8')
49            lines = file_handle.readlines()
50            line_number = 0
51            # non-NULL means we're looking through whitespace to find
52            # additional commands
53            current_breakpoint = None
54            for line in lines:
55                line_number = line_number + 1  # 1-based, so we do this first
56                (command, new_breakpoint) = self.parse_one_command(line)
57
58                if new_breakpoint:
59                    current_breakpoint = None
60
61                if command is not None:
62                    if current_breakpoint is None:
63                        current_breakpoint = {}
64                        current_breakpoint['file_name'] = source_file
65                        current_breakpoint['line_number'] = line_number
66                        current_breakpoint['command'] = command
67                        self.breakpoints.append(current_breakpoint)
68                    else:
69                        current_breakpoint['command'] = current_breakpoint[
70                            'command'] + "\n" + command
71
72    def set_breakpoints(self, target):
73        for breakpoint in self.breakpoints:
74            breakpoint['breakpoint'] = target.BreakpointCreateByLocation(
75                breakpoint['file_name'], breakpoint['line_number'])
76
77    def handle_breakpoint(self, test, breakpoint_id):
78        for breakpoint in self.breakpoints:
79            if breakpoint['breakpoint'].GetID() == breakpoint_id:
80                test.execute_user_command(breakpoint['command'])
81                return
82
83
84class InlineTest(TestBase):
85
86    def getBuildDirBasename(self):
87        return self.__class__.__name__ + "." + self.testMethodName
88
89    def BuildMakefile(self):
90        makefilePath = self.getBuildArtifact("Makefile")
91        if os.path.exists(makefilePath):
92            return
93
94        categories = {}
95        for f in os.listdir(self.getSourceDir()):
96            t = source_type(f)
97            if t:
98                if t in list(categories.keys()):
99                    categories[t].append(f)
100                else:
101                    categories[t] = [f]
102
103        with open(makefilePath, 'w+') as makefile:
104            for t in list(categories.keys()):
105                line = t + " := " + " ".join(categories[t])
106                makefile.write(line + "\n")
107
108            if ('OBJCXX_SOURCES' in list(categories.keys())) or \
109               ('OBJC_SOURCES' in list(categories.keys())):
110                makefile.write(
111                    "LDFLAGS = $(CFLAGS) -lobjc -framework Foundation\n")
112
113            if ('CXX_SOURCES' in list(categories.keys())):
114                makefile.write("CXXFLAGS += -std=c++11\n")
115
116            makefile.write("include Makefile.rules\n")
117
118    def _test(self):
119        self.BuildMakefile()
120        self.build(dictionary=self._build_dict)
121        self.do_test()
122
123    def execute_user_command(self, __command):
124        exec(__command, globals(), locals())
125
126    def _get_breakpoint_ids(self, thread):
127        ids = set()
128        for i in range(0, thread.GetStopReasonDataCount(), 2):
129            ids.add(thread.GetStopReasonDataAtIndex(i))
130        self.assertGreater(len(ids), 0)
131        return sorted(ids)
132
133    def do_test(self):
134        exe = self.getBuildArtifact("a.out")
135        source_files = [f for f in os.listdir(self.getSourceDir())
136                        if source_type(f)]
137        target = self.dbg.CreateTarget(exe)
138
139        parser = CommandParser()
140        parser.parse_source_files(source_files)
141        parser.set_breakpoints(target)
142
143        process = target.LaunchSimple(None, None, self.get_process_working_directory())
144        self.assertIsNotNone(process, PROCESS_IS_VALID)
145
146        hit_breakpoints = 0
147
148        while lldbutil.get_stopped_thread(process, lldb.eStopReasonBreakpoint):
149            hit_breakpoints += 1
150            thread = lldbutil.get_stopped_thread(
151                process, lldb.eStopReasonBreakpoint)
152            for bp_id in self._get_breakpoint_ids(thread):
153                parser.handle_breakpoint(self, bp_id)
154            process.Continue()
155
156        self.assertTrue(hit_breakpoints > 0,
157                        "inline test did not hit a single breakpoint")
158        # Either the process exited or the stepping plan is complete.
159        self.assertTrue(process.GetState() in [lldb.eStateStopped,
160                                               lldb.eStateExited],
161                        PROCESS_EXITED)
162
163    def check_expression(self, expression, expected_result, use_summary=True):
164        value = self.frame().EvaluateExpression(expression)
165        self.assertTrue(value.IsValid(), expression + "returned a valid value")
166        if self.TraceOn():
167            print(value.GetSummary())
168            print(value.GetValue())
169        if use_summary:
170            answer = value.GetSummary()
171        else:
172            answer = value.GetValue()
173        report_str = "%s expected: %s got: %s" % (
174            expression, expected_result, answer)
175        self.assertTrue(answer == expected_result, report_str)
176
177
178def ApplyDecoratorsToFunction(func, decorators):
179    tmp = func
180    if isinstance(decorators, list):
181        for decorator in decorators:
182            tmp = decorator(tmp)
183    elif hasattr(decorators, '__call__'):
184        tmp = decorators(tmp)
185    return tmp
186
187
188def MakeInlineTest(__file, __globals, decorators=None, name=None,
189        build_dict=None):
190    # Adjust the filename if it ends in .pyc.  We want filenames to
191    # reflect the source python file, not the compiled variant.
192    if __file is not None and __file.endswith(".pyc"):
193        # Strip the trailing "c"
194        __file = __file[0:-1]
195
196    if name is None:
197        # Derive the test name from the current file name
198        file_basename = os.path.basename(__file)
199        name, _ = os.path.splitext(file_basename)
200
201    test_func = ApplyDecoratorsToFunction(InlineTest._test, decorators)
202    # Build the test case
203    test_class = type(name, (InlineTest,), dict(test=test_func,
204        name=name, _build_dict=build_dict))
205
206    # Add the test case to the globals, and hide InlineTest
207    __globals.update({name: test_class})
208
209    # Keep track of the original test filename so we report it
210    # correctly in test results.
211    test_class.test_filename = __file
212    test_class.mydir = TestBase.compute_mydir(__file)
213    return test_class
214