25 lines
898 B
C
25 lines
898 B
C
/* E X P R E S S I O N C H E C K I N G */
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struct node;
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extern int (*ExprChkTable[])(struct node*); /* table of expression checking
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functions, indexed by node class
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*/
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extern int (*VarAccChkTable[])(struct node*); /* table of variable-access checking
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functions, indexed by node class
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*/
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#define ChkExpression(expp) ((*ExprChkTable[(expp)->nd_class])(expp))
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#define ChkVarAccess(expp) ((*VarAccChkTable[(expp)->nd_class])(expp))
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int ChkConstant(register struct node *expp);
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int ChkVariable(register struct node *expp);
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/* Check that "expp" indicates an item that can be the lhs
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of an assignment, return 1 if possible, on return 0.
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*/
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int ChkLhs(register struct node *expp);
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int ChkLinkOrName(register struct node *expp);
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char *ChkAllowedVar(register struct node *nd, int reading);
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int ChkCall(register struct node *expp);
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void MarkUsed(register struct node *nd);
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