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feat(library/tactic/proof_state): add option tactic::proof_state::goal_names

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2013-12-05 21:18:22 -08:00
parent e6fb6f7d1e
commit 13f9454fe1
3 changed files with 38 additions and 1 deletions
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16
src/library/tactic/proof_state.cpp
View file

@ -9,7 +9,17 @@ Author: Leonardo de Moura
#include "library/kernel_bindings.h" #include "library/kernel_bindings.h"
#include "library/tactic/proof_state.h" #include "library/tactic/proof_state.h"
#ifndef LEAN_PROOF_STATE_GOAL_NAMES
#define LEAN_PROOF_STATE_GOAL_NAMES false
#endif
namespace lean { namespace lean {
static name g_proof_state_goal_names {"tactic", "proof_state", "goal_names"};
RegisterBoolOption(g_proof_state_goal_names, LEAN_PROOF_STATE_GOAL_NAMES, "(tactic) display goal names when pretty printing proof state");
bool get_proof_state_goal_names(options const & opts) {
return opts.get_bool(g_proof_state_goal_names, LEAN_PROOF_STATE_GOAL_NAMES);
}
optional<name> get_ith_goal_name(goals const & gs, unsigned i) { optional<name> get_ith_goal_name(goals const & gs, unsigned i) {
unsigned j = 1; unsigned j = 1;
for (auto const & p : gs) { for (auto const & p : gs) {
@ -36,6 +46,8 @@ bool trust_cex(precision p) {
} }
format proof_state::pp(formatter const & fmt, options const & opts) const { format proof_state::pp(formatter const & fmt, options const & opts) const {
bool show_goal_names = get_proof_state_goal_names(opts);
unsigned indent = get_pp_indent(opts);
format r; format r;
bool first = true; bool first = true;
for (auto const & p : get_goals()) { for (auto const & p : get_goals()) {
@ -43,8 +55,12 @@ format proof_state::pp(formatter const & fmt, options const & opts) const {
first = false; first = false;
else else
r += line(); r += line();
if (show_goal_names) {
r += group(format{format(p.first), colon(), nest(indent, compose(line(), p.second.pp(fmt, opts)))});
} else {
r += p.second.pp(fmt, opts); r += p.second.pp(fmt, opts);
} }
}
if (first) { if (first) {
r = format("no goals"); r = format("no goals");
} }

6
tests/lean/interactive/t8.lean Normal file
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@ -0,0 +1,6 @@
Set tactic::proof_state::goal_names true.
Theorem T (a : Bool) : a => a /\ a.
apply imp_tac.
apply Conj.
assumption.
done.

15
tests/lean/interactive/t8.lean.expected.out Normal file
View file

@ -0,0 +1,15 @@
Type Ctrl-D or 'Exit.' to exit or 'Help.' for help.
# Set: pp::colors
Set: pp::unicode
Set: tactic::proof_state::goal_names
# Proof state:
main: a : Bool ⊢ a ⇒ a ∧ a
## Proof state:
main: H : a, a : Bool ⊢ a ∧ a
## Proof state:
main::1: H : a, a : Bool ⊢ a
main::2: H : a, a : Bool ⊢ a
## Proof state:
no goals
## Proved: T
#