Add function for making elisions; #21

allzweckmesser/scanner.py

@@ -266,6 +266,22 @@ def positional_lengthening(verse):
                             syllable.phenomena['positional lengthening'] = Phenomenon(chars=match.group(1))
 
 
+def make_elisions(verse):
+    for reading in verse.readings:
+        for i, token in enumerate(reading.tokens):
+            if i < len(reading.tokens) - 1:
+                this_syllable = token.syllables[-1]
+                next_syllable = reading.tokens[i+1].syllables[0]
+                m = re.search(r'[aeiouy][mh]*$', this_syllable.text)
+                if m:
+                    if re.search(r'h?[aeiouy]', next_syllable.text):
+                        # Elision!
+                        this_syllable.phenomena['elision'] = Phenomenon(omitted=m.group())
+                        this_syllable.syllable_length = 0
+    return verse
+
+
+
 def parse_verse(verse):
     """Annotates syllable lengths based on positional_lengthening and muta cum liquida 
     
@@ -348,4 +364,5 @@ class Scanner:
             for reading in verse.readings:
                 get_syllables(reading)
             parse_verse(verse)
+            make_elisions(verse)
         return verses