56 lines
1.6 KiB
C
56 lines
1.6 KiB
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*
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* Author: Ceriel J.H. Jacobs
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*/
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/* N O D E O F A N A B S T R A C T P A R S E T R E E */
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/* $Header$ */
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struct node {
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struct node *nd_left;
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struct node *nd_right;
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int nd_class; /* kind of node */
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#define Value 0 /* constant */
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#define Arrsel 1 /* array selection */
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#define Oper 2 /* binary operator */
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#define Uoper 3 /* unary operator */
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#define Arrow 4 /* ^ construction */
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#define Call 5 /* cast or procedure - or function call */
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#define Name 6 /* an identifier */
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#define Set 7 /* a set constant */
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#define Xset 8 /* a set */
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#define Def 9 /* an identified name */
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#define Stat 10 /* a statement */
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#define Link 11
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#define LinkDef 12
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/* do NOT change the order or the numbers!!! */
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struct type *nd_type; /* type of this node */
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struct token nd_token;
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#define nd_set nd_token.tk_data.tk_set
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#define nd_def nd_token.tk_data.tk_def
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#define nd_lab nd_token.tk_data.tk_lab
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#define nd_symb nd_token.tk_symb
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#define nd_lineno nd_token.tk_lineno
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#define nd_IDF nd_token.TOK_IDF
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#define nd_STR nd_token.TOK_STR
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#define nd_SLE nd_token.TOK_SLE
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#define nd_INT nd_token.TOK_INT
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#define nd_REL nd_token.TOK_REL
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};
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/* ALLOCDEF "node" 50 */
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extern struct node *MkNode(), *MkLeaf(), *dot2node(), *dot2leaf();
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#define NULLNODE ((struct node *) 0)
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#define HASSELECTORS 002
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#define VARIABLE 004
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#define VALUE 010
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#define IsCast(lnd) (((lnd)->nd_class == Def || (lnd)->nd_class == LinkDef) && is_type((lnd)->nd_def))
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#define IsProcCall(lnd) ((lnd)->nd_type->tp_fund == T_PROCEDURE)
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