Demo entry 6365736

Test cases for Pygments PR#723

   

Submitted by Daniel Houck on May 20, 2017 at 23:51
Language: C++. Code size: 4.9 kB.

// The first several sections are from Issue #1121; some have been fixed by now
// PR#723 fixes the rest

// integer literals:
234;        // decimal, OK
0234;       // octal, OK
0x1234abCD; // hexadecimal, OK
0X1234abCD; // hexadecimal, fail
0b1010;     // binary, fail
0B1010;     // binary, fail

1;        // OK
1u;       // OK
1U;       // OK
1l;       // OK
1L;       // OK
1ll;      // OK
1LL;      // OK
1ul;      // OK
1Ul;      // OK
1uL;      // OK
1UL;      // OK
1ull;     // OK
1Ull;     // OK
1uLL;     // OK
1ULL;     // OK

01;        // OK
01u;       // OK
01U;       // OK
01l;       // OK
01L;       // OK
01ll;      // OK
01LL;      // OK
01ul;      // OK
01Ul;      // OK
01uL;      // OK
01UL;      // OK
01ull;     // OK
01Ull;     // OK
01uLL;     // OK
01ULL;     // OK

0x1;        // OK
0x1u;       // OK
0x1U;       // OK
0x1l;       // OK
0x1L;       // OK
0x1ll;      // OK
0x1LL;      // OK
0x1ul;      // OK
0x1Ul;      // OK
0x1uL;      // OK
0x1UL;      // OK
0x1ull;     // OK
0x1Ull;     // OK
0x1uLL;     // OK
0x1ULL;     // OK

0b1;        // fail
0b1u;       // fail
0b1U;       // fail
0b1l;       // fail
0b1L;       // fail
0b1ll;      // fail
0b1LL;      // fail
0b1ul;      // fail
0b1Ul;      // fail
0b1uL;      // fail
0b1UL;      // fail
0b1ull;     // fail
0b1Ull;     // fail
0b1uLL;     // fail
0b1ULL;     // fail

// integer literals with ' as separator always fail:
1'123'456'789;    // same as 1234567890
0123'456;         // same as 0123456
0xABCD'1234;      // same as 0xABCD1234
0XABCD'1234;      // same as 0XABCD1234
0b1111'0000'0000; // same as 0b111100000000
0B1111'0000'0000; // same as 0B111100000000
// the ' can appear as separator on every position of an integer but for direct
// after a prefix (0, 0b, 0B, 0x or 0X), after another ' ('' is not allowed)
// and of course at the begin and after the last _digit_ (not suffix) of an integer literal

978'3'446'43981'8; // is a correct integer literal, same as 9783446439818
// (it is an ISBN, as example for a not equidistant separation use case)

// floating point literals:
4.24;    // OK
4.24f;   // OK
4.24F;   // OK
4.24l;   // The 'l' must be part of the literal
4.24L;   // The 'L' must be part of the literal

4.2e4;   // OK
4.2e+4;  // OK
4.2e-4;  // OK
4.2e4f;  // The 'f' must be part of the literal
4.2e+4f; // The 'f' must be part of the literal
4.2e-4f; // The 'f' must be part of the literal
4.2e4F;  // The 'F' must be part of the literal
4.2e+4F; // The 'F' must be part of the literal
4.2e-4F; // The 'F' must be part of the literal
4.2e4l;  // OK
4.2e+4l; // OK
4.2e-4l; // OK
4.2e4L;  // OK
4.2e+4L; // OK
4.2e-4L; // OK

4.2E4;   // OK
4.2E+4;  // OK
4.2E-4;  // OK
4.2E4f;  // The 'f' must be part of the literal
4.2E+4f; // The 'f' must be part of the literal
4.2E-4f; // The 'f' must be part of the literal
4.2E4F;  // The 'F' must be part of the literal
4.2E+4F; // The 'F' must be part of the literal
4.2E-4F; // The 'F' must be part of the literal
4.2E4l;  // OK
4.2E+4l; // OK
4.2E-4l; // OK
4.2E4L;  // OK
4.2E+4L; // OK
4.2E-4L; // OK

// character and c-string literals:
'a';            // OK
u'a';           // The 'u' must be part of the literal
U'a';           // The 'U' must be part of the literal
L'a';           // OK
"I am a Text";  // OK
u"I am a Text"; // The 'u' must be part of the literal
U"I am a Text"; // The 'U' must be part of the literal
L"I am a Text"; // OK

// also all raw string literals are not supported

// with C++17 the following literals will also become correct:
// --> begin C++17
u8'a';
u8"I am a Text";
// <-- end C++17


// Hexadecmial floating-point literals
0x1p-53;                  // Double-precision machine epsilon
0x1p-24f;                 // Single-precision machine epsilon
0x1.fffffffffffffp+1023;  // Double-precision max finite
0x1.fffffep+127f;         // Single-precision max finite

// Custom literals

"This\0is\0a\0test\0"s;  // Type std::string
30s;                                      // Type std::chrono::seconds
3.14i;                                    // Type std::complex<double>

"127.0.0.1"_ipv4;                         // User-defined string literal
"Hello, world!"_i18n;                     // User-defined string literal
"Hello, %" PRId64 " people";              // Not a custom literal
u8R"delim(/[*](.|\n)*?[*]/)delim"_regex;  // User-defined raw string literal
602214085700000000000000_bignum;          // User-defined decimal numeric literal
0x25504446_bigendian;                     // User-defined hex numeric literal
0755_mode;                                // User-defined octal numeric literal
2.998e8_meter;                            // User-defined float literal
'a'_ebcdic;                               // User-defined character literal

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