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Ensure that label names in processor start with capital letter #231

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Jun 5, 2024
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Ensure that label names in processor start with capital letter #231

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3 changes: 3 additions & 0 deletions grammarinator/tool/processor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -906,6 +906,9 @@ def build_expr(node, parent_id):
nonlocal alt_idx
conditions = [find_conditions(child) for child in children]
labels = [str(child.identifier().TOKEN_REF() or child.identifier().RULE_REF()) for child in children if child.identifier()] if isinstance(node, ANTLRv4Parser.RuleAltListContext) else []
# Ensure to start labels with capital letter, since ANTLR will also create a context with capital start character.
# It's important to keep them in sync since grammarinator-parse will use this graph for comparison.
labels = [label[0].upper() + label[1:] for label in labels]
recurring_labels = {name for name, cnt in Counter(labels).items() if cnt > 1}
assert len(labels) == 0 or len(labels) == len(children)
alt_id = graph.add_node(AlternationNode(idx=alt_idx, conditions=append_unique(graph.alt_conds, conditions) if all(isfloat(cond) for cond in conditions) else conditions, rule_id=rule.id))
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