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hoa: allocate the states once, after parsing the header

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* src/hoaparse/hoaparse.yy: Allocate state after parsing the entire
header, not right after passing "States:".
* src/tgbatest/hoaparse.test: Reflect improved error message
about initial state.
This commit is contained in:
Alexandre Duret-Lutz 2014-11-21 14:00:19 +01:00
parent 71d21b378b
commit 8c8c2f0b7c
2 changed files with 44 additions and 32 deletions
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74
src/hoaparse/hoaparse.yy
View file

@ -126,7 +126,7 @@
%left '&'
%nonassoc '!'
%type <num> state-num acc-set
%type <num> checked-state-num state-num acc-set
%type <b> label-expr
%type <mark> acc-sig_opt acc-sets
@ -152,6 +152,21 @@ BOOLEAN: 't' | 'f'
header: format-version header-items
{
// Preallocate the states if we know their number.
if (res.states != -1)
{
unsigned states = res.states;
if (res.start != -1 &&
res.states <= res.start)
{
error(res.start_loc,
"initial state number is larger than state count...");
error(res.states_loc, "... declared here.");
states = res.start + 1;
}
res.h->aut->new_states(states);
res.declared_states.resize(states);
}
if (res.accset < 0)
{
error(@$, "missing 'Acceptance:' header");
@ -184,17 +199,6 @@ header-item: "States:" INT
YYABORT;
}
res.states = std::max(res.states, (int) $2);
if (res.states <= res.start)
{
error(res.start_loc,
"initial state number is larger than state count...");
error(@$, "... declared here.");
}
int missing = std::max(res.states, res.start + 1)
- res.h->aut->num_states();
assert(missing >= 0);
res.h->aut->new_states(missing);
res.declared_states.resize(res.declared_states.size() + missing);
}
| "Start:" state-conj-2
{
@ -336,7 +340,8 @@ header-spec: | header-spec BOOLEAN
delete $2;
}
state-conj-2: state-num '&' state-num | state-conj-2 '&' state-num
state-conj-2: checked-state-num '&' checked-state-num
| state-conj-2 '&' checked-state-num
label-expr: 't'
{
@ -459,24 +464,31 @@ state-num: INT
error(@1, "state number is too large for this implementation");
YYABORT;
}
if ((int) $1 >= res.states)
{
if (res.states >= 0)
{
error(@1, "state number is larger than state count...");
error(res.states_loc, "... declared here.");
}
int missing = ((int) $1) - res.h->aut->num_states() + 1;
if (missing >= 0)
{
res.h->aut->new_states(missing);
res.declared_states.resize(res.declared_states.size()
+ missing);
}
}
$$ = $1;
}
checked-state-num: state-num
{
if ((int) $1 >= res.states)
{
if (res.states >= 0)
{
error(@1, "state number is larger than state "
"count...");
error(res.states_loc, "... declared here.");
}
int missing =
((int) $1) - res.h->aut->num_states() + 1;
if (missing >= 0)
{
res.h->aut->new_states(missing);
res.declared_states.resize
(res.declared_states.size() + missing);
}
}
$$ = $1;
}
states: | states state
state: state-name labeled-edges
| state-name unlabeled-edges
@ -488,7 +500,7 @@ state: state-name labeled-edges
res.cur_guard = res.guards.begin();
}
}
state-name: "State:" state-label_opt state-num string_opt acc-sig_opt
state-name: "State:" state-label_opt checked-state-num string_opt acc-sig_opt
{
res.cur_state = $3;
if (res.declared_states[$3])
@ -547,7 +559,7 @@ acc-sets:
$$ = $1 | res.h->aut->acc().mark($2);
}
labeled-edges: | labeled-edges labeled-edge
labeled-edge: trans-label state-num acc-sig_opt
labeled-edge: trans-label checked-state-num acc-sig_opt
{
res.h->aut->new_transition(res.cur_state, $2,
res.cur_label, $3 | res.acc_state);
@ -561,7 +573,7 @@ labeled-edge: trans-label state-num acc-sig_opt
/* We never have zero unlabeled edges, these are considered as zero
labeled edges. */
unlabeled-edges: unlabeled-edge | unlabeled-edges unlabeled-edge
unlabeled-edge: state-num acc-sig_opt
unlabeled-edge: checked-state-num acc-sig_opt
{
bdd cond;
if (res.has_state_label)

2
src/tgbatest/hoaparse.test
View file

@ -143,7 +143,7 @@ State: 0 {0 1}
EOF
expecterr input <<EOF
input:4.8: state number is larger than state count...
input:4.1-8: initial state number is larger than state count...
input:3.1-9: ... declared here.
input:1.1-4.8: missing 'Acceptance:' header
input:6.8: state number is larger than state count...