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can call custom functions from condition code while pattern matching / rewriting + added example to runner_translate.py

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This commit is contained in:
Joeri Exelmans 2024-12-10 12:28:49 +01:00
parent fd8bc3bc40
commit 9e74075066
5 changed files with 95 additions and 45 deletions
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15
transformation/rule.py
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@ -26,10 +26,11 @@ class _NAC_MATCHED(Exception):
# Helper for executing NAC/LHS/RHS-type rules
class RuleMatcherRewriter:
def __init__(self, state, mm: UUID, mm_ramified: UUID):
def __init__(self, state, mm: UUID, mm_ramified: UUID, eval_context={}):
self.state = state
self.mm = mm
self.mm_ramified = mm_ramified
self.eval_context = eval_context
# Generates matches.
# Every match is a dictionary with entries LHS_element_name -> model_element_name
@ -38,7 +39,9 @@ class RuleMatcherRewriter:
host_m=m,
host_mm=self.mm,
pattern_m=lhs,
pattern_mm=self.mm_ramified)
pattern_mm=self.mm_ramified,
eval_context=self.eval_context,
)
try:
# First we iterate over LHS-matches:
@ -64,7 +67,9 @@ class RuleMatcherRewriter:
host_mm=self.mm,
pattern_m=nac,
pattern_mm=self.mm_ramified,
pivot=lhs_match) # try to "grow" LHS-match with NAC-match
pivot=lhs_match, # try to "grow" LHS-match with NAC-match
eval_context=self.eval_context,
)
try:
# for nac_match in nac_matcher:
@ -117,7 +122,9 @@ class RuleMatcherRewriter:
pattern_mm=self.mm_ramified,
lhs_match=lhs_match,
host_m=cloned_m,
host_mm=self.mm)
host_mm=self.mm,
eval_context=self.eval_context,
)
except Exception as e:
# Make exceptions raised in eval'ed code easier to trace:
e.add_note(f"while executing RHS of '{rule_name}'")