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Refactored grammar to remove need for second transformer #385

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9 changes: 2 additions & 7 deletions src/decaylanguage/data/decfile.lark
Original file line number Diff line number Diff line change
Expand Up @@ -55,17 +55,13 @@ model_label : LABEL

model_alias : "ModelAlias" model_label model

model : (model_label _SEMICOLON | MODEL_NAME_AND_SC | MODEL_NAME_AND_WS model_options _SEMICOLON+ | MODEL_NAME_MULTILINE model_options _SEMICOLON+)
model : (model_label | MODEL_NAME model_options?) _SEMICOLON+
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model_options : (value | LABEL | _NEWLINE | _COMMA)+

// Model names must either be followed by at least one whitespace (when they have model parameters) or a semicolon (without model parameters)
// We must set priorities here to use lalr - match model name above label, and label above something else

MODEL_NAME_AND_WS.2: MODEL_NAME _WS+
MODEL_NAME_AND_SC.2: MODEL_NAME _WS* _SEMICOLON+
MODEL_NAME_MULTILINE.2: MODEL_NAME NEWLINE _WS*

MODEL_NAME : "BaryonPCR"|"BC_SMN"|"BC_TMN"|"BC_VHAD"|"BC_VMN"|"BCL"|"BGL"|"BLLNUL"|"BNOCB0TO4PICP"|"BNOCBPTO3HPI0"|"BNOCBPTOKSHHH"|"BS_MUMUKK"|"BSTOGLLISRFSR"|"BSTOGLLMNT"|"BT02PI_CP_ISO"|"BTO3PI_CP"|"BTODDALITZCPK"|"BToDiBaryonlnupQCD"|"BTOSLLALI"|"BTOSLLBALL"|"BTOSLLMS"|"BTOSLLMSEXT"|"BTOVLNUBALL"|"BTOXSGAMMA"|"BTOXELNU"|"BTOXSLL"|"BQTOLLLLHYPERCP"|"BQTOLLLL"|"CB3PI-MPP"|"CB3PI-P00"|"D_DALITZ"|"D_hhhh"|"D0GAMMADALITZ"|"D0MIXDALITZ"|"DToKpienu"|"ETAPRIME_DALITZ"|"ETA_DALITZ"|"ETA_FULLDALITZ"|"ETA_LLPIPI"|"ETA_PI0DALITZ"|"FLATQ2"|"FLATSQDALITZ"|"FOURBODYPHSP"|"GENERIC_DALITZ"|"GOITY_ROBERTS"|"HELAMP"|"HQET3"|"HQET2"|"HQET"|"ISGW2"|"ISGW"|"KS_PI0MUMU"|"Lb2Baryonlnu"|"Lb2plnuLCSR"|"Lb2plnuLQCD"|"LbAmpGen"|"LLSW"|"LNUGAMMA"|"LQCD"|"MELIKHOV"|"OMEGA_DALITZ"|"PARTWAVE"|"PHI_DALITZ"|"PHSPDECAYTIMECUT"|"PHSPFLATLIFETIME"|"PHSP"|"PI0_DALITZ"|"PROPSLPOLE"|"PTO3P"|"PVV_CPLH"|"PYCONT"|"PYTHIA"|"SLBKPOLE"|"SLL"|"SLN"|"SLPOLE"|"SSD_CP"|"SSD_DirectCP"|"SSS_CP_PNG"|"SSS_CP"|"SSS_CPT"|"STS_CP"|"STS"|"SVP_CP"|"SVP_HELAMP"|"SVP"|"SVS_CP_ISO"|"SVS_CPLH"|"SVS_CP"|"SVS_NONCPEIGEN"|"SVS"|"SVV_CPLH"|"SVV_CP"|"SVV_HELAMP"|"SVV_NONCPEIGEN"|"SVVHELCPMIX"|"TAUHADNU"|"TAULNUNU"|"TAUOLA"|"TAUSCALARNU"|"TAUVECTORNU"|"THREEBODYPHSP"|"TSS"|"TVP"|"TVS_PWAVE"|"VLL"|"VSP_PWAVE"|"VSS_BMIX"|"VSS_MIX"|"VSS"|"VTOSLL"|"VUB"|"VVPIPI"|"VVP"|"VVS_PWAVE"|"XLL"|"YMSTOYNSPIPICLEO"|"YMSTOYNSPIPICLEOBOOST"
MODEL_NAME.2 : ("BaryonPCR"|"BC_SMN"|"BC_TMN"|"BC_VHAD"|"BC_VMN"|"BCL"|"BGL"|"BLLNUL"|"BNOCB0TO4PICP"|"BNOCBPTO3HPI0"|"BNOCBPTOKSHHH"|"BS_MUMUKK"|"BSTOGLLISRFSR"|"BSTOGLLMNT"|"BT02PI_CP_ISO"|"BTO3PI_CP"|"BTODDALITZCPK"|"BToDiBaryonlnupQCD"|"BTOSLLALI"|"BTOSLLBALL"|"BTOSLLMS"|"BTOSLLMSEXT"|"BTOVLNUBALL"|"BTOXSGAMMA"|"BTOXELNU"|"BTOXSLL"|"BQTOLLLLHYPERCP"|"BQTOLLLL"|"CB3PI-MPP"|"CB3PI-P00"|"D_DALITZ"|"D_hhhh"|"D0GAMMADALITZ"|"D0MIXDALITZ"|"DToKpienu"|"ETAPRIME_DALITZ"|"ETA_DALITZ"|"ETA_FULLDALITZ"|"ETA_LLPIPI"|"ETA_PI0DALITZ"|"FLATQ2"|"FLATSQDALITZ"|"FOURBODYPHSP"|"GENERIC_DALITZ"|"GOITY_ROBERTS"|"HELAMP"|"HQET3"|"HQET2"|"HQET"|"ISGW2"|"ISGW"|"KS_PI0MUMU"|"Lb2Baryonlnu"|"Lb2plnuLCSR"|"Lb2plnuLQCD"|"LbAmpGen"|"LLSW"|"LNUGAMMA"|"LQCD"|"MELIKHOV"|"OMEGA_DALITZ"|"PARTWAVE"|"PHI_DALITZ"|"PHSPDECAYTIMECUT"|"PHSPFLATLIFETIME"|"PHSP"|"PI0_DALITZ"|"PROPSLPOLE"|"PTO3P"|"PVV_CPLH"|"PYCONT"|"PYTHIA"|"SLBKPOLE"|"SLL"|"SLN"|"SLPOLE"|"SSD_CP"|"SSD_DirectCP"|"SSS_CP_PNG"|"SSS_CP"|"SSS_CPT"|"STS_CP"|"STS"|"SVP_CP"|"SVP_HELAMP"|"SVP"|"SVS_CP_ISO"|"SVS_CPLH"|"SVS_CP"|"SVS_NONCPEIGEN"|"SVS"|"SVV_CPLH"|"SVV_CP"|"SVV_HELAMP"|"SVV_NONCPEIGEN"|"SVVHELCPMIX"|"TAUHADNU"|"TAULNUNU"|"TAUOLA"|"TAUSCALARNU"|"TAUVECTORNU"|"THREEBODYPHSP"|"TSS"|"TVP"|"TVS_PWAVE"|"VLL"|"VSP_PWAVE"|"VSS_BMIX"|"VSS_MIX"|"VSS"|"VTOSLL"|"VUB"|"VVPIPI"|"VVP"|"VVS_PWAVE"|"XLL"|"YMSTOYNSPIPICLEO"|"YMSTOYNSPIPICLEOBOOST")/\b/

// model : model_generic
// model_helamp : "HELAMP" (SIGNED_NUMBER SIGNED_NUMBER)+
Expand All @@ -74,7 +70,6 @@ MODEL_NAME : "BaryonPCR"|"BC_SMN"|"BC_TMN"|"BC_VHAD"|"BC_VMN"|"BCL"|"BGL"|"BLLNU
// To use a fast parser, we need to avoid conflicts

%import common.WS_INLINE
%import common.NEWLINE
%import common.INT
%import common.SIGNED_NUMBER

Expand Down
21 changes: 0 additions & 21 deletions src/decaylanguage/dec/dec.py
Original file line number Diff line number Diff line change
Expand Up @@ -199,9 +199,6 @@ def parse(self, include_ccdecays: bool = True) -> None:
)
self._parsed_dec_file = parser.parse(self._dec_file)

# Strip whitespace and semicolons (necessary for LALR(1) grammar) from model names
self._parsed_dec_file = ModelNameCleanup().transform(self._parsed_dec_file)

# At last, find all particle decays defined in the .dec decay file ...
self._find_parsed_decays()
# Replace model aliases with the actual models and model parameters. Deepcopy to avoid modification of dict by
Expand Down Expand Up @@ -1035,24 +1032,6 @@ def __str__(self) -> str:
return repr(self)


class ModelNameCleanup(Transformer): # type: ignore[misc]
"""
Lark Transformer removing whitespace and semicolons from decay model parameter terminals
(MODEL_NAME_AND_WS and MODEL_NAME_AND_SC). These exist to distinguish model names from
strings containing them as substrings and have to be terminals to allow LALR(1) parsing.

"""

def MODEL_NAME_AND_WS(self, t: Token) -> Token:
return t.update(value=t.strip())

def MODEL_NAME_AND_SC(self, t: Token) -> Token:
return t.update(value=t.strip(";").strip())

def MODEL_NAME_MULTILINE(self, t: Token) -> Token:
return t.update(value=t.strip())


class DecayModelAliasReplacement(Transformer): # type: ignore[misc]
"""
Lark Transformer implementing the replacement of decay model aliases
Expand Down
83 changes: 7 additions & 76 deletions tests/dec/test_dec.py
Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,6 @@
DecayNotFound,
DecFileNotParsed,
DecFileParser,
ModelNameCleanup,
get_decay_mother_name,
get_final_state_particle_names,
get_model_name,
Expand Down Expand Up @@ -467,7 +466,7 @@ def test_decay_model_parsing_with_model_alias():
p.parse()
assert p._dict_raw_model_aliases() == {
"SLBKPOLE_DtoKlnu": [
Token("MODEL_NAME_AND_WS", "SLBKPOLE"),
Token("MODEL_NAME", "SLBKPOLE"),
Tree(
"model_options",
[
Expand Down Expand Up @@ -654,74 +653,6 @@ def test_expand_decay_chains():
assert set(all_decays) == set(output[particle])


def test_Lark_ModelNameCleanup_Transformer_no_params():
t = Tree(
"decay",
[
Tree("particle", [Token("LABEL", "D0")]),
Tree(
"decayline",
[
Tree("value", [Token("SIGNED_NUMBER", "1.0")]),
Tree("particle", [Token("LABEL", "K-")]),
Tree("particle", [Token("LABEL", "pi+")]),
Tree("model", [Token("MODEL_NAME_AND_SC", "PHSP;")]),
],
),
],
)

cleaned_tree = ModelNameCleanup().transform(t)
tree_decayline = next(iter(cleaned_tree.find_data("decayline")))
assert get_model_name(tree_decayline) == "PHSP"


def test_Lark_ModelNameCleanup_Transformer_with_params():
t = Tree(
"decay",
[
Tree("particle", [Token("LABEL", "B0sig")]),
Tree(
"decayline",
[
Tree("value", [Token("SIGNED_NUMBER", "1.000")]),
Tree("particle", [Token("LABEL", "MyFirstD*-")]),
Tree("particle", [Token("LABEL", "MySecondD*+")]),
Tree(
"model",
[
Token("MODEL_NAME_AND_WS", "SVV_HELAMP "),
Tree(
"model_options",
[
Tree("value", [Token("SIGNED_NUMBER", "0.0")]),
Tree("value", [Token("SIGNED_NUMBER", "0.0")]),
Tree("value", [Token("SIGNED_NUMBER", "0.0")]),
Tree("value", [Token("SIGNED_NUMBER", "0.0")]),
Tree("value", [Token("SIGNED_NUMBER", "1.0")]),
Tree("value", [Token("SIGNED_NUMBER", "0.0")]),
],
),
],
),
],
),
],
)

cleaned_tree = ModelNameCleanup().transform(t)
tree_decayline = next(iter(cleaned_tree.find_data("decayline")))
assert get_model_name(tree_decayline) == "SVV_HELAMP"
assert get_model_parameters(tree_decayline) == [
"0.0",
"0.0",
"0.0",
"0.0",
"1.0",
"0.0",
]


def test_Lark_DecayModelAliasReplacement_Transformer():
t = Tree(
"decay",
Expand All @@ -744,7 +675,7 @@ def test_Lark_DecayModelAliasReplacement_Transformer():
)
dict_model_aliases = {
"SLBKPOLE_DtoKlnu": [
Token("MODEL_NAME_AND_WS", "SLBKPOLE"),
Token("MODEL_NAME", "SLBKPOLE"),
Tree(
"model_options",
[
Expand Down Expand Up @@ -777,7 +708,7 @@ def test_Lark_DecayModelParamValueReplacement_Visitor_no_params():
Tree("value", [Token("SIGNED_NUMBER", "1.0")]),
Tree("particle", [Token("LABEL", "K-")]),
Tree("particle", [Token("LABEL", "pi+")]),
Tree("model", [Token("MODEL_NAME_AND_SC", "PHSP")]),
Tree("model", [Token("MODEL_NAME", "PHSP")]),
],
),
],
Expand Down Expand Up @@ -805,7 +736,7 @@ def test_Lark_DecayModelParamValueReplacement_Visitor_single_value():
Tree(
"model",
[
Token("MODEL_NAME_AND_WS", "VSS_BMIX"),
Token("MODEL_NAME", "VSS_BMIX"),
Tree("model_options", [Token("LABEL", "dm")]),
],
),
Expand Down Expand Up @@ -845,7 +776,7 @@ def test_Lark_DecayModelParamValueReplacement_Visitor_list():
Tree(
"model",
[
Token("MODEL_NAME_AND_WS", "SVV_HELAMP"),
Token("MODEL_NAME", "SVV_HELAMP"),
Tree(
"model_options",
[
Expand Down Expand Up @@ -888,7 +819,7 @@ def test_Lark_ChargeConjugateReplacement_Visitor():
Tree("value", [Token("SIGNED_NUMBER", "1.0")]),
Tree("particle", [Token("LABEL", "K-")]),
Tree("particle", [Token("LABEL", "pi+")]),
Tree("model", [Token("MODEL_NAME_AND_SC", "PHSP")]),
Tree("model", [Token("MODEL_NAME", "PHSP")]),
],
),
],
Expand Down Expand Up @@ -920,7 +851,7 @@ def test_Lark_ChargeConjugateReplacement_Visitor_with_aliases():
Tree("value", [Token("SIGNED_NUMBER", "1.0")]),
Tree("particle", [Token("LABEL", "K-")]),
Tree("particle", [Token("LABEL", "pi+")]),
Tree("model", [Token("MODEL_NAME_AND_SC", "PHSP")]),
Tree("model", [Token("MODEL_NAME", "PHSP")]),
],
),
],
Expand Down
6 changes: 4 additions & 2 deletions tests/dec/test_known_decay_models.py
Original file line number Diff line number Diff line change
Expand Up @@ -26,9 +26,11 @@ def test_lark_file_model_list_consistency():
with Path(filename).open(encoding="utf-8") as lark_file:
lines = lark_file.readlines()
for line in lines:
if "MODEL_NAME :" in line:
if "MODEL_NAME.2 :" in line:
break
models = line.split(":")[1].strip(" ").strip("\n").split('"|"')
models = (
line.split(":")[1][: -len(r"//\b/")].strip(" ()").strip("\n").split('"|"')
)
models = [m.strip('"') for m in models]

assert models == list(known_decay_models)
Expand Down