46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/* S C O P E M E C H A N I S M */
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/* $Header$ */
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#define OPENSCOPE 0 /* Indicating an open scope */
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#define CLOSEDSCOPE 1 /* Indicating a closed scope (module) */
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#define SC_CHKFORW 1 /* Check for forward definitions when closing
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a scope
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*/
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#define SC_CHKPROC 2 /* Check for forward procedure definitions
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when closing a scope
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*/
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#define SC_REVERSE 4 /* Reverse list of definitions, to get it
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back into original order
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*/
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struct scope {
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struct scope *next;
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struct forwards *sc_forw;
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char *sc_name; /* name of this scope */
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struct def *sc_def; /* list of definitions in this scope */
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arith sc_off; /* offsets of variables in this scope */
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char sc_scopeclosed; /* flag indicating closed or open scope */
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int sc_level; /* level of this scope */
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struct def *sc_definedby; /* The def structure defining this scope */
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};
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struct scopelist {
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struct scopelist *next;
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struct scope *sc_scope;
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struct scopelist *sc_encl;
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};
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extern struct scope
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*PervasiveScope,
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*GlobalScope;
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extern struct scopelist
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*CurrVis;
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#define CurrentScope (CurrVis->sc_scope)
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#define enclosing(x) ((x)->sc_encl)
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#define scopeclosed(x) ((x)->sc_scopeclosed)
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#define nextvisible(x) ((x)->next) /* use with scopelists */
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