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Copy BYacc's nice way to report the grammar.

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* src/gram.h, src/gram.c (grammar_rhs_print, grammar_rules_print):
New.
Don't print the rules' location, it is confusing and useless.
(rule_print): Use grammar_rhs_print.
* src/print.c (print_grammar): Use grammar_rules_print.
This commit is contained in:
Akim Demaille
2002-06-15 18:23:12 +00:00
parent ee000ba4fc
commit 6b98e4b563
16 changed files with 328 additions and 151 deletions
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20
src/print_graph.c
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@@ -38,14 +38,11 @@
static graph_t graph;
static FILE *fgraph = NULL;
static inline const char *
escape (const char *s)
{
return quotearg_n_style (1, escape_quoting_style, s);
}
/*----------------------------.
| Construct the node labels. |
`----------------------------*/
/* This part will construct the label of nodes. */
static void
print_core (struct obstack *oout, state_t *state)
{
@@ -78,15 +75,15 @@ print_core (struct obstack *oout, state_t *state)
if (i)
obstack_1grow (oout, '\n');
obstack_fgrow1 (oout, " %s -> ",
escape (rules[rule].lhs->tag));
symbol_tag_get (rules[rule].lhs));
for (sp = rules[rule].rhs; sp < sp1; sp++)
obstack_fgrow1 (oout, "%s ", escape (symbols[*sp]->tag));
obstack_fgrow1 (oout, "%s ", symbol_tag_get (symbols[*sp]));
obstack_1grow (oout, '.');
for (/* Nothing */; *sp >= 0; ++sp)
obstack_fgrow1 (oout, " %s", escape (symbols[*sp]->tag));
obstack_fgrow1 (oout, " %s", symbol_tag_get (symbols[*sp]));
/* Experimental feature: display the lookaheads. */
if (trace_flag && state->nlookaheads)
@@ -107,8 +104,7 @@ print_core (struct obstack *oout, state_t *state)
if (bitset_test (LA[state->lookaheadsp + j], k)
&& LArule[state->lookaheadsp + j]->number == rule)
obstack_fgrow2 (oout, "%s%s",
quotearg_style (escape_quoting_style,
symbols[k]->tag),
symbol_tag_get (symbols[k]),
--nlookaheads ? ", " : "");
obstack_sgrow (oout, "]");
}
@@ -156,7 +152,7 @@ print_actions (state_t *state, const char *node_name)
edge.color = red;
else
edge.color = SHIFT_IS_SHIFT(shiftp, i) ? blue : green;
edge.label = escape (symbols[symbol]->tag);
edge.label = symbol_tag_get (symbols[symbol]);
output_edge (&edge, fgraph);
close_edge (fgraph);
}