66 lines
837 B
C++
66 lines
837 B
C++
// Rewrite by expanding all symbols
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#include "stdafx.h"
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#include "defs.h"
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void
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rewrite(void)
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{
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int h;
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save();
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p1 = pop();
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if (istensor(p1)) {
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rewrite_tensor();
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restore();
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return;
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}
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if (iscons(p1)) {
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h = tos;
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push(car(p1)); // Do not rewrite function name
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p1 = cdr(p1);
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while (iscons(p1)) {
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push(car(p1));
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rewrite();
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p1 = cdr(p1);
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}
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list(tos - h);
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restore();
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return;
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}
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// If not a symbol then done
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if (!issymbol(p1)) {
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push(p1);
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restore();
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return;
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}
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// Get the symbol's binding, try again
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p2 = get_binding(p1);
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push(p2);
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if (p1 != p2)
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rewrite();
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restore();
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}
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void
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rewrite_tensor(void)
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{
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int i;
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push(p1);
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copy_tensor();
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p1 = pop();
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for (i = 0; i < p1->u.tensor->nelem; i++) {
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push(p1->u.tensor->elem[i]);
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rewrite();
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p1->u.tensor->elem[i] = pop();
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}
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push(p1);
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}
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