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| author | Jussi Pakkanen <jpakkane@gmail.com> | 2016-06-19 22:02:59 +0300 |
|---|---|---|
| committer | Jussi Pakkanen <jpakkane@gmail.com> | 2016-08-01 20:49:30 +0300 |
| commit | b382abdd2c307d0716353013022df5039991ac1f (patch) | |
| tree | cec45bf951de7b6513dbfb3b70b6220d8b6a5efc | |
| parent | d90fcb4048f720a238cbb350164ec8f63d1eec60 (diff) | |
| download | meson-b382abdd2c307d0716353013022df5039991ac1f.zip meson-b382abdd2c307d0716353013022df5039991ac1f.tar.gz meson-b382abdd2c307d0716353013022df5039991ac1f.tar.bz2 | |
Forbid nested ternary operations.
| -rw-r--r-- | mesonbuild/mparser.py | 6 | ||||
| -rw-r--r-- | test cases/failing/30 nested ternary/meson.build | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/mesonbuild/mparser.py b/mesonbuild/mparser.py index b3fdba8..2f0eb2d 100644 --- a/mesonbuild/mparser.py +++ b/mesonbuild/mparser.py @@ -353,6 +353,7 @@ class Parser: def __init__(self, code): self.stream = Lexer().lex(code) self.getsym() + self.in_ternary = False def getsym(self): try: @@ -393,9 +394,14 @@ class Parser: left.lineno, left.colno) return AssignmentNode(left.lineno, left.colno, left.value, value) elif self.accept('questionmark'): + if self.in_ternary: + raise ParseException('Nested ternary operators are not allowed.', + left.lineno, left.colno) + self.in_ternary = True trueblock = self.e1() self.expect('colon') falseblock = self.e1() + self.in_ternary = False return TernaryNode(left.lineno, left.colno, left, trueblock, falseblock) return left diff --git a/test cases/failing/30 nested ternary/meson.build b/test cases/failing/30 nested ternary/meson.build new file mode 100644 index 0000000..f9c2e5f --- /dev/null +++ b/test cases/failing/30 nested ternary/meson.build @@ -0,0 +1,3 @@ +project('nested ternary', 'c') + +x = true ? (false ? 1 : 0) : 2 |