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83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
/*
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* param.c - Parameters and values
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*
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* Copyright 2012 by Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <glib.h>
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#include "util.h"
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#include "param.h"
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static GTree *tree;
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static int duplicate(const char *a, const struct equiv *b)
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{
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while (b) {
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if (a == b->name)
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return 1;
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b = b->next;
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}
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return 0;
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}
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static void check_duplicates(const struct names *n)
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{
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const struct names *na, *nb;
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const struct equiv *ea;
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for (na = n; na; na = na->next) {
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for (ea = na->equiv; ea; ea = ea->next)
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if (duplicate(ea->name, ea->next))
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yyerrorf("duplicate name \"%s\"", ea->name);
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for (nb = na->next; nb; nb = nb->next)
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if (duplicate(ea->name, nb->equiv))
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yyerrorf("duplicate name \"%s\"", ea->name);
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}
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}
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static gint comp(gconstpointer a, gconstpointer b)
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{
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return a == b ? 0 : a < b ? -1 : 1;
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}
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void register_nameset(const char *name, const struct names *set)
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{
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if (!tree)
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tree = g_tree_new(comp);
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if (g_tree_lookup(tree, name))
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yyerrorf("duplicate name set \"%s\"", name);
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check_duplicates(set);
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g_tree_insert(tree, (void *) name, (void *) set);
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}
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const struct names *find_nameset(const char *name)
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{
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return tree ? g_tree_lookup(tree, name) : NULL;
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}
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#define MKOPS(type) \
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const struct param_ops param_ops_##type = { \
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.eval = eval_##type, \
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.comp = comp_##type, \
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}
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MKOPS(name);
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MKOPS(set);
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MKOPS(abs);
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MKOPS(rel);
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