def expand(nested_list):
# Expand any '[]' or '{}' groups
output = PlayString([])
for item in nested_list:
if isinstance(item, PlayString):
output.extend(item)
else:
output.append(item)
return output
def parse(self, string, dur=1):
# Iterate over the string
string = PlayString(string)
items = []
contains_nest = False
i = 0
#counter = 0
while i < len(string):
char = string[i]
# Look for a '()'
if char == "(":
# Parse the contents of the brackets if found
j = string.index(")", start=i + 2)
s = string[i + 1:j]
i = j
chars, _ = self.parse(s, dur)
items.append(chars)
contains_nest = True
# Look for a '{}'
elif char == "{":
# Parse the contents of the brackets if found
j = string.index("}", start=i + 2)
s = string[i + 1:j]
i = j
chars, _ = self.parse(s, dur)
items.append(RandomPlayGroup(chars))
# Look for a '[]'
elif char == "[":
j = string.index("]", start=i + 2)
s = string[i + 1:j]
i = j
chars, contains_nest = self.parse(s, dur)
# Un-nest
if contains_nest:
# May contain sub-nests, so re-parse with calculated duration
chars, _ = self.parse(s, dur / float(len(chars)))
new_chars = []
for num in range(max([len(ch) for ch in chars])):
new_chars.append(
PlayGroup([modi(ch, num) for ch in chars]))
items.append(new_chars)
else:
new_chars = []
for char in chars:
char.divide(len(chars))
if isinstance(char, PCHAR):
new_chars.append(char)
else:
new_chars.extend(char)
items.append(PlayGroup(new_chars))
# Add single character to list
elif char not in ")]":
items.append(PCHAR(char, dur))
# Increase iterator
i += 1
return items, contains_nest
