Merge pull request #12152 from bruchar1/ast-preserve-all

Preserve whitespaces and comments in AST

1 files changed, 189 insertions, 0 deletions

diff --git a/test cases/unit/118 rewrite/meson.build b/test cases/unit/118 rewrite/meson.build
new file mode 100644
index 000000000..7d0330b9e
--- /dev/null
+++ b/test cases/unit/118 rewrite/meson.build
@@ -0,0 +1,189 @@
+# This file should expose all possible meson syntaxes
+  #   and ensure the AstInterpreter and RawPrinter are able
+  
+  # to parse and write a file identical to the original.
+
+  project  (       # project comment 1
+    # project comment 2
+    'rewrite'  ,  # argument comment
+    # project comment 3
+        'cpp',
+    'c',
+    default_options: [
+        'unity=on',
+        'unity_size=50',  # number of cpp / unity. default is 4...
+        'warning_level=2',  # eqv to /W3
+        'werror=true',  # treat warnings as errors
+        'b_ndebug=if-release',  # disable assert in Release
+        'cpp_eh=a',  # /EHa exception handling
+        'cpp_std=c++17',
+        'cpp_winlibs=' + ','.join([ # array comment
+        # in array
+          # comment
+            'kernel32.lib',
+            'user32.lib',
+            'gdi32.lib',
+            'winspool.lib',
+            'comdlg32.lib',
+            'advapi32.lib',
+            'shell32.lib'
+            # before comma comment
+            ,
+            # after comma comment
+            'ole32.lib',
+            'oleaut32.lib',
+            'uuid.lib',
+            'odbc32.lib',
+            'odbccp32.lib',
+            'Delayimp.lib',  # For delay loaded dll
+            'OLDNAMES.lib',
+            'dbghelp.lib',
+            'psapi.lib',
+        ]),
+    ],
+    meson_version: '>=1.2',
+    version: '1.0.0',
+ )  # project comment 4
+
+cppcoro_dep = dependency('andreasbuhr-cppcoro-cppcoro')
+cppcoro = declare_dependency(
+    dependencies: [cppcoro_dep.partial_dependency(
+        includes: true,
+        link_args: true,
+        links: true,
+        sources: true,
+    )],
+    # '/await:strict' allows to use <coroutine> rather than <experimental/coroutine> with C++17.
+    # We can remove '/await:strict' once we update to C++20.
+    compile_args: ['/await:strict'],
+    # includes:true doesn't work for now in partial_dependency()
+    # This line could be removed once https://github.com/mesonbuild/meson/pull/10122 is released.
+    include_directories: cppcoro_dep.get_variable('includedir1'),
+)
+
+
+if get_option('unicode')  #if comment
+#if comment 2
+  mfc=cpp_compiler.find_library(get_option('debug')?'mfc140ud':'mfc140u')
+       # if comment 3
+else#elsecommentnowhitespaces
+       # else  comment 1
+  mfc = cpp_compiler.find_library( get_option( 'debug' ) ? 'mfc140d' : 'mfc140')
+# else comment 2
+endif  #endif comment
+
+
+assert(1 in [1, 2], '''1 should be in [1, 2]''')
+assert(3 not in [1, 2], '''3 shouldn't be in [1, 2]''')
+assert(not (3 in [1, 2]), '''3 shouldn't be in [1, 2]''')
+
+assert('b' in ['a', 'b'], ''''b' should be in ['a', 'b']''')
+assert('c' not in ['a', 'b'], ''''c' shouldn't be in ['a', 'b']''')
+
+assert(exe1 in [exe1, exe2], ''''exe1 should be in [exe1, exe2]''')
+assert(exe3 not in [exe1, exe2], ''''exe3 shouldn't be in [exe1, exe2]''')
+
+assert('a' in {'a': 'b'}, '''1 should be in {'a': 'b'}''')
+assert('b'not in{'a':'b'}, '''1 should be in {'a': 'b'}''')
+
+assert('a'in'abc')
+assert('b'  not   in    'def')
+
+
+w = 'world'
+d = {'a': 1, 'b': 0b10101010, 'c': 'pi', 'd': '''a
+b
+c''', 'e': f'hello @w@', 'f': f'''triple
+  formatted
+    string # this is not a comment
+      hello @w@
+''', 'g': [1, 2, 3], 
+
+    'h' # comment a
+    : # comment b
+0xDEADBEEF # comment c
+, # comment d
+'hh': 0xfeedc0de, # lowercase hexa
+'hhh': 0XaBcD0123,  # mixed case hexa
+'oo': 0O123456,  # upper O octa
+'bb': 0B1111,  # upper B binary
+'i': {'aa': 11, # this is a comment
+  'bb': 22}, # a comment inside a dict
+'o': 0o754,
+'m': -12,  # minus number
+'eq': 1 + 3 - 3 % 4 + -( 7 * 8 ),
+}  # end of dict comment
+
+hw = d['e']
+one = d['g'][0]
+  w  +=  '!'
+
+
+components = {
+  'foo': ['foo.c'],
+  'bar': ['bar.c'],
+	'baz': ['baz.c'], # this line is indented with a tab!
+}
+
+# compute a configuration based on system dependencies, custom logic
+conf = configuration_data()
+conf.set('USE_FOO', 1)
+
+# Determine the sources to compile
+sources_to_compile = []
+foreach name, sources : components
+  if conf.get('USE_@0@'.format(name.to_upper()), 0) == 1
+    sources_to_compile += sources
+  endif
+endforeach
+
+
+items = ['a', 'continue', 'b', 'break', 'c']
+result = []
+foreach i : items
+  if i == 'continue'
+    continue
+  elif i == 'break'
+    break
+  endif
+  result += i
+endforeach
+# result is ['a', 'b']
+
+
+
+if a and b
+  # do something
+endif
+if c or d
+  # do something
+endif
+if not e
+  # do something
+endif
+if not (f or g)
+  # do something
+endif
+
+single_quote = 'contains a \' character'
+string_escapes = '\\\'\a\b\f\n\r\t\v\046\x26\u2D4d\U00002d4d\N{GREEK CAPITAL LETTER DELTA}'
+no_string_escapes = '''\\\'\a\b\f\n\r\t\v\046\x26\u2D4d\U00002d4d\N{GREEK CAPITAL LETTER DELTA}'''
+
+# FIXME: is it supposed to work? (cont_eol inside string)
+# cont_string = 'blablabla\
+# blablabla'
+
+# cont_eol with whitespace and comments after
+if a \  # comment in cont 1
+    and b \  # comment in cont 2
+    or c  # comment in cont 3
+  message('ok')
+endif
+
+if a \
+    or b
+  debug('help!')
+endif
+
+
+# End of file comment with no linebreak
\ No newline at end of file