2.4.3.35. ex_Tag

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This function implements the syntax analysis for the lowest syntax elements of an expression. This function is called when syntax analysis believes that a TAG has to be worked up in an expression. A tag is defined formally as

 tag ::= UNOP tag
         BUN '(' expression_list ')'
         NUMBER
         STRING
         '(' expression ')'
         VARIABLE @{ '[' expression_list ']' }
         VARIABLE '@{' expression_list '}'
         FUNC '(' expression_list ')'
        .

peNODE ex_Tag(peXobject pEx
  )@{
The function returns pointer to the new node.
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