C: Parser: Support parsing of c99 designated initializers

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>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/libs/3rdparty/cplusplus/ASTVisitor.h b/src/libs/3rdparty/cplusplus/ASTVisitor.h
index d9578a4061..66c6c011f4 100644
--- a/src/libs/3rdparty/cplusplus/ASTVisitor.h
+++ b/src/libs/3rdparty/cplusplus/ASTVisitor.h
@@ -108,6 +108,8 @@ public:
     virtual bool visit(DeclaratorIdAST *) { return true; }
     virtual bool visit(DecltypeSpecifierAST *) { return true; }
     virtual bool visit(DeleteExpressionAST *) { return true; }
+    virtual bool visit(DesignatedInitializerAST *) { return true; }
+    virtual bool visit(DesignatorAST *) { return true; }
     virtual bool visit(DestructorNameAST *) { return true; }
     virtual bool visit(DoStatementAST *) { return true; }
     virtual bool visit(DynamicExceptionSpecificationAST *) { return true; }
@@ -254,6 +256,8 @@ public:
     virtual void endVisit(DeclaratorIdAST *) {}
     virtual void endVisit(DecltypeSpecifierAST *) {}
     virtual void endVisit(DeleteExpressionAST *) {}
+    virtual void endVisit(DesignatedInitializerAST *) {}
+    virtual void endVisit(DesignatorAST *) {}
     virtual void endVisit(DestructorNameAST *) {}
     virtual void endVisit(DoStatementAST *) {}
     virtual void endVisit(DynamicExceptionSpecificationAST *) {}