Skip to content

refactor(parser): emit temporal delayed triggers as native ir #6807

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Closed
matthewevans wants to merge 4 commits into from
Closed

refactor(parser): emit temporal delayed triggers as native ir #6807

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
9ca1916
refactor(parser): emit temporal delayed triggers as native ir
matthewevans Jul 30, 2026
4c46fcf
test(parser): cover whenever temporal trigger ir
matthewevans Jul 30, 2026
e1c6890
test(parser): cover copy-next temporal ir helper
matthewevans Jul 30, 2026
6117828
test(parser): isolate copy-next temporal helper clause
matthewevans Jul 30, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 3 additions & 2 deletions crates/engine/src/parser/oracle.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5162,9 +5162,10 @@ pub(crate) fn parse_oracle_ir(
// trigger-shaped temporal text through the effect parser before generic
// trigger dispatch.
if is_spell && has_trigger_prefix(&lower) {
if let Some(def) = try_parse_temporal_delayed_trigger_ability(&line, AbilityKind::Spell)
if let Some(ability) =
try_parse_temporal_delayed_trigger_ability(&line, AbilityKind::Spell)
{
emitter.ability_at(item_line, def);
emitter.ability_ir_at(item_line, ability);
i += 1;
continue;
}
Expand Down
10 changes: 8 additions & 2 deletions crates/engine/src/parser/oracle_effect/mod.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1653,14 +1653,20 @@ fn try_parse_copy_next_spell_when_cast(tp: TextPair) -> Option<ParsedEffectClaus
pub(crate) fn try_parse_temporal_delayed_trigger_ability(
text: &str,
kind: AbilityKind,
) -> Option<AbilityDefinition> {
) -> Option<AbilityIr> {
let lower = text.to_lowercase();
let tp = TextPair::new(text, &lower);
let clause = try_parse_whenever_this_turn(tp)
.or_else(|| try_parse_when_next_event(tp))
.or_else(|| try_parse_copy_next_spell_when_cast(tp))
.or_else(|| try_parse_at_next_phase_delayed_trigger(text, kind))?;
Some(ability_definition_from_clause(kind, clause))
Some(AbilityIr {
source_text: text.to_string(),
body: EffectChainIr::single_clause(text, kind, clause, None, None, false),
shell: AbilityShellIr::default(),
die_results: vec![],
root_transforms: vec![],
})
}

/// CR 603.7a: Pact-cycle instants ("At the beginning of your next upkeep, pay
Expand Down
78 changes: 78 additions & 0 deletions crates/engine/src/parser/oracle_ir/snapshot_tests.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -989,6 +989,84 @@ fn chandra_nalaar_minus_x_loyalty_is_ir_native() {
insta::assert_json_snapshot!("chandra_nalaar_minus_x_loyalty_lowered", &lowered);
}

// ---------------------------------------------------------------------------
// Spell temporal delayed triggers
// ---------------------------------------------------------------------------

/// CR 603.7a-c: spell-only temporal trigger lines stay as native document IR
/// until the sole lowering seam. The Pact payload remains a deliberately
/// lowered boxed ability inside the outer delayed-trigger clause.
#[test]
fn temporal_delayed_trigger_spell_router_is_ir_native() {
let cases = [
(
"pact_of_negation_temporal_ir",
"pact_of_negation_temporal_lowered",
"At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.",
"Pact of Negation",
&["Instant"][..],
),
(
"full_throttle_temporal_ir",
"full_throttle_temporal_lowered",
"At the beginning of each combat this turn, untap all creatures that attacked this turn.",
"Full Throttle",
&["Sorcery"][..],
),
(
"galvanic_iteration_temporal_ir",
"galvanic_iteration_temporal_lowered",
"When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.",
"Galvanic Iteration",
&["Instant"][..],
),
];
Comment thread
coderabbitai[bot] marked this conversation as resolved.

for (ir_snapshot, lowered_snapshot, oracle_text, card_name, types) in cases {
let (ir, lowered) = parse_two_layer(oracle_text, card_name, types, &[]);
assert_eq!(
ir.items.len(),
1,
"{card_name}: one source line emits one item"
);
let OracleNodeIr::Spell(ability) = &ir.items[0].node else {
panic!("{card_name}: expected native temporal spell IR");
};
assert!(matches!(
&ability.body.clauses[0].parsed.effect,
Effect::CreateDelayedTrigger { .. }
));
assert_eq!(
lowered.abilities.len(),
1,
"{card_name}: one lowered ability"
);
assert!(matches!(
lowered.abilities[0].effect.as_ref(),
Effect::CreateDelayedTrigger { .. }
));

if card_name == "Pact of Negation" {
let Effect::CreateDelayedTrigger { effect, .. } =
&ability.body.clauses[0].parsed.effect
else {
unreachable!("checked above");
};
assert!(matches!(
effect.kind,
crate::types::ability::AbilityKind::Spell
));
}

insta::with_settings!({ snapshot_suffix => ir_snapshot }, {
insta::assert_json_snapshot!("temporal_delayed_trigger", &ir);
});
insta::with_settings!({ snapshot_suffix => lowered_snapshot }, {
insta::assert_json_snapshot!("temporal_delayed_trigger", &lowered);
});
}
}

// ---------------------------------------------------------------------------
// Equipment / Vehicles
// ---------------------------------------------------------------------------
Expand Down
154 changes: 154 additions & 0 deletions ...arser__oracle_ir__snapshot_tests__temporal_delayed_trigger@full_throttle_temporal_ir.snap
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,154 @@
---
source: crates/engine/src/parser/oracle_ir/snapshot_tests.rs
expression: "&ir"
---
{
"items": [
{
"id": 0,
"source": {
"id": {
"item": 0,
"ordinal": 0
},
"span": {
"first_line": 0,
"last_line": 0,
"start_byte": 0,
"end_byte": 87,
"precision": "Exact",
"ordinal_within_span": 0
},
"fragment": "At the beginning of each combat this turn, untap all creatures that attacked this turn."
},
"node": {
"Spell": {
"source_text": "At the beginning of each combat this turn, untap all creatures that attacked this turn.",
"body": {
"clauses": [
{
"id": 0,
"source": {
"id": {
"item": 0,
"ordinal": 1
},
"span": {
"first_line": 0,
"last_line": 0,
"start_byte": 0,
"end_byte": 87,
"precision": "ChainRelative",
"ordinal_within_span": 0
},
"fragment": "At the beginning of each combat this turn, untap all creatures that attacked this turn."
},
"disposition": {
"Emit": {
"followup": null,
"intrinsic": null
}
},
"parsed": {
"effect": {
"type": "CreateDelayedTrigger",
"condition": {
"type": "WheneverEvent",
"trigger": {
"mode": "Phase",
"execute": null,
"valid_card": null,
"origin": null,
"destination": null,
"trigger_zones": [
"Battlefield"
],
"phase": "BeginCombat",
"optional": false,
"damage_kind": "Any",
"secondary": false,
"valid_target": null,
"valid_source": null,
"description": null,
"constraint": null,
"condition": null,
"batched": false
}
},
"effect": {
"kind": "Spell",
"effect": {
"type": "SetTapState",
"target": {
"type": "Typed",
"type_filters": [
"Creature"
],
"controller": null,
"properties": [
{
"type": "AttackedThisTurn"
}
]
},
"scope": {
"type": "All"
},
"state": {
"type": "Untap"
}
},
"cost": null,
"sub_ability": null,
"duration": null,
"description": null,
"target_prompt": null,
"condition": null,
"optional_targeting": false,
"optional": false,
"forward_result": false
},
"uses_tracked_set": false
},
"duration": null,
"sub_ability": null,
"distribute": null,
"multi_target": null,
"condition": null,
"optional": false,
"unless_pay": null
},
"boundary": null,
"condition": null,
"is_optional": false,
"opponent_may_scope": null,
"repeat_for": null,
"player_scope": null,
"starting_with": null,
"delayed_condition": null,
"prefix_delayed_condition": null,
"multi_target": null,
"where_x_expression": null,
"unless_pay": null
}
],
"kind": "Spell",
"continuation_kind": null,
"player_scope_rewrite": "Apply",
"chain_rounding": null,
"actor": null,
"in_trigger": false,
"repeat_until": null
},
"shell": {
"sub_link": null
},
"die_results": [],
"root_transforms": []
}
}
}
],
"source_text": "At the beginning of each combat this turn, untap all creatures that attacked this turn.",
"card_name": "Full Throttle"
}
84 changes: 84 additions & 0 deletions ...__oracle_ir__snapshot_tests__temporal_delayed_trigger@full_throttle_temporal_lowered.snap
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,84 @@
---
source: crates/engine/src/parser/oracle_ir/snapshot_tests.rs
expression: "&lowered"
---
{
"abilities": [
{
"kind": "Spell",
"effect": {
"type": "CreateDelayedTrigger",
"condition": {
"type": "WheneverEvent",
"trigger": {
"mode": "Phase",
"execute": null,
"valid_card": null,
"origin": null,
"destination": null,
"trigger_zones": [
"Battlefield"
],
"phase": "BeginCombat",
"optional": false,
"damage_kind": "Any",
"secondary": false,
"valid_target": null,
"valid_source": null,
"description": null,
"constraint": null,
"condition": null,
"batched": false
}
},
"effect": {
"kind": "Spell",
"effect": {
"type": "SetTapState",
"target": {
"type": "Typed",
"type_filters": [
"Creature"
],
"controller": null,
"properties": [
{
"type": "AttackedThisTurn"
}
]
},
"scope": {
"type": "All"
},
"state": {
"type": "Untap"
}
},
"cost": null,
"sub_ability": null,
"duration": null,
"description": null,
"target_prompt": null,
"condition": null,
"optional_targeting": false,
"optional": false,
"forward_result": false
},
"uses_tracked_set": false
},
"cost": null,
"sub_ability": null,
"duration": null,
"description": null,
"target_prompt": null,
"condition": null,
"optional_targeting": false,
"optional": false,
"forward_result": false
}
],
"triggers": [],
"statics": [],
"replacements": [],
"extractedKeywords": []
}
Loading
Loading