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C: Parser: Support parsing of c99 designated initializers

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In case:

    int a[6] = { [4] = 29, [2] = 15 };
    struct point { int x, y; };
    struct point p = { .y = 3, .x = 2 };

Grammar change when c99 language feature is enabled:
old grammar:

    braced-init-list :: '{' initializer-list '}'

new grammar:

    braced-init-list :: '{' designated-initializer-list '}'
    designated-initializer-list :: designated-initializer (',' designated-initializer )*
    designated-initializer :: designator* initializer-clause
    designator :: '.' identifier
                | '[' constant-expression ']'

Task-number: QTCREATORBUG-1902
Change-Id: Ib99d6f553f8d0f50ba3eff86f3a2e86d73372426
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>
This commit is contained in:
Wang Hoi
2014-05-05 22:56:15 +08:00
committed by Nikolai Kosjar
parent d70485180a
commit c56b999fff
27 changed files with 529 additions and 2 deletions
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9
tests/auto/cplusplus/c99/data/designatedInitializer.1.c Normal file
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@@ -0,0 +1,9 @@
int aa[4] = { [2] = 3, [1] = 6 };
static short grid[3] [4] = { [0][0]=8, [0][1]=6,
[0][2]=4, [0][3]=1,
[2][0]=9, [2][1]=3,
[2][2]=1, [2][3]=1 };
int a[10] = {2, 4, [8]=9, 10};
int a[MAX] = {
1, 3, 5, 7, 9, [MAX-5] = 8, 6, 4, 2, 0
};