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C++: Basic support for C++11 user-defined literals

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1. Extends lexer so digit or string can be followed by underscore '_' and
   alphanumeric defining literal.

2. Extends parser so it accepts operator"" _abc(...) user-defined literal
   definition.

3. Adds Token::Flags.userDefinedLiteral bool flag field representing if token
   carries user-defined literal.

4. Adds C++11 auto tests case with: 12_km, 0.5_Pa, 'c'_X, "abd"_L, u"xyz"_M

5. All optional suffix scanning methods now return boolean if the suffix was
   found.

6. Adds C++ Lexer tests for user-defined literals with C++11 feature enabled.

This change however does not make QtCreator understand user-defined literal
semantics, e.g. properly resolve type when applying custom literal operator.

Change-Id: I30e62f025ec9fb11c39261985ea4d772b1a80949
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@theqtcompany.com>
This commit is contained in:
Adam Strzelecki
2014-11-02 14:42:23 +01:00
committed by Nikolai Kosjar
parent 5699991a2f
commit 425811291d
7 changed files with 115 additions and 22 deletions
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6
src/libs/3rdparty/cplusplus/Token.h vendored
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@@ -302,6 +302,7 @@ public:
inline bool joined() const { return f.joined; }
inline bool expanded() const { return f.expanded; }
inline bool generated() const { return f.generated; }
inline bool userDefinedLiteral() const { return f.userDefinedLiteral; }
inline unsigned bytes() const { return f.bytes; }
inline unsigned bytesBegin() const { return byteOffset; }
@@ -363,8 +364,11 @@ public:
// Tokens '1', '+', '2', and ';' are all expanded. However only tokens '+' and ';'
// are generated.
unsigned generated : 1;
// The token is C++11 user-defined literal such as:
// 12_km, 0.5_Pa, 'c'_X, "abd"_L, u16"xyz"_M
unsigned userDefinedLiteral : 1;
// Unused...
unsigned pad : 3;
unsigned pad : 2;
// The token length in bytes and UTF16 chars.
unsigned bytes : 16;
unsigned utf16chars : 16;