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visitors.py
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visitors.py
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import ast
class C(ast.NodeTransformer):
def prec(self, n):
return getattr(self, 'prec_'+n.__class__.__name__, getattr(self, 'generic_prec'))(n)
def visit_Call(self, n):
func = self.visit(n.func)
args = ', '.join(map(self.visit, n.args))
return r'%s(%s)' % (func, args)
def prec_Call(self, n):
return 1000
def visit_Name(self, n):
return n.id
def prec_Name(self, n):
return 1000
def visit_UnaryOp(self, n):
if self.prec(n.op) > self.prec(n.operand):
return r'%s (%s)' % (self.visit(n.op), self.visit(n.operand))
else:
return r'%s %s' % (self.visit(n.op), self.visit(n.operand))
def prec_UnaryOp(self, n):
return self.prec(n.op)
def visit_BinOp(self, n):
if self.prec(n.op) > self.prec(n.left):
left = r'(%s)' % self.visit(n.left)
else:
left = self.visit(n.left)
if self.prec(n.op) > self.prec(n.right):
right = r'(%s)' % self.visit(n.right)
else:
right = self.visit(n.right)
if isinstance(n.op, ast.FloorDiv):
return r'floor(%s / %s)' % (self.visit(n.left), self.visit(n.right))
elif isinstance(n.op, ast.Pow):
return r'pow(%s, %s)' % (self.visit(n.left), self.visit(n.right))
elif isinstance(n.op, ast.Mod):
return r'fmod(%s, %s)' % (left, self.visit(n.right))
else:
return r'%s %s %s' % (left, self.visit(n.op), right)
def prec_BinOp(self, n):
return self.prec(n.op)
def visit_Sub(self, n):
return '-'
def prec_Sub(self, n):
return 300
def visit_Add(self, n):
return '+'
def prec_Add(self, n):
return 300
def visit_Mult(self, n):
return '*'
def prec_Mult(self, n):
return 400
def prec_Mod(self, n):
return 500
def prec_Pow(self, n):
return 700
def prec_BitXor(self, n):
return 700
def visit_Div(self, n):
return '/'
def prec_Div(self, n):
return 400
def prec_FloorDiv(self, n):
return 400
def visit_Invert(self, n):
return '-'
def prec_Invert(self, n):
return 800
def visit_Not(self, n):
return '~'
def prec_Not(self, n):
return 800
def visit_UAdd(self, n):
return '+'
def prec_UAdd(self, n):
return 800
def visit_USub(self, n):
return '-'
def prec_USub(self, n):
return 800
def visit_Num(self, n):
return str(n.n)
def prec_Num(self, n):
return 1000
def generic_visit(self, n):
if isinstance(n, ast.AST):
return r'' % (n.__class__.__name__, ', '.join(map(self.visit, [getattr(n, f) for f in n._fields])))
else:
return str(n)
def generic_prec(self, n):
return 0
class matlab(ast.NodeVisitor):
def prec(self, n):
return getattr(self, 'prec_'+n.__class__.__name__, getattr(self, 'generic_prec'))(n)
def visit_Call(self, n):
func = self.visit(n.func)
args = ', '.join(map(self.visit, n.args))
return r'%s(%s)' % (func, args)
def prec_Call(self, n):
return 1000
def visit_Name(self, n):
return n.id
def prec_Name(self, n):
return 1000
def visit_UnaryOp(self, n):
if self.prec(n.op) > self.prec(n.operand):
return r'%s (%s)' % (self.visit(n.op), self.visit(n.operand))
else:
return r'%s %s' % (self.visit(n.op), self.visit(n.operand))
def prec_UnaryOp(self, n):
return self.prec(n.op)
def visit_BinOp(self, n):
if self.prec(n.op) > self.prec(n.left):
left = r'(%s)' % self.visit(n.left)
else:
left = self.visit(n.left)
if self.prec(n.op) > self.prec(n.right):
right = r'(%s)' % self.visit(n.right)
else:
right = self.visit(n.right)
if isinstance(n.op, ast.FloorDiv):
return r'floor(%s/%s)' % (self.visit(n.left), self.visit(n.right))
elif isinstance(n.op, ast.Mod):
return r'mod(%s,%s)' % (self.visit(n.left), self.visit(n.right))
else:
return r'%s %s %s' % (left, self.visit(n.op), right)
def prec_BinOp(self, n):
return self.prec(n.op)
def visit_Sub(self, n):
return '-'
def prec_Sub(self, n):
return 300
def visit_Add(self, n):
return '+'
def prec_Add(self, n):
return 300
def visit_Mult(self, n):
return '.*'
def prec_Mult(self, n):
return 400
def visit_Mod(self, n):
return 'mod'
def prec_Mod(self, n):
return 500
def visit_Pow(self, n):
return '.^'
def prec_Pow(self, n):
return 700
def visit_BitXor(self, n):
return '.^'
def prec_BitXor(self, n):
return 700
def visit_Div(self, n):
return './'
def prec_Div(self, n):
return 400
def prec_FloorDiv(self, n):
return 400
def visit_Invert(self, n):
return '-'
def prec_Invert(self, n):
return 800
def visit_Not(self, n):
return '~'
def prec_Not(self, n):
return 800
def visit_UAdd(self, n):
return '+'
def prec_UAdd(self, n):
return 800
def visit_USub(self, n):
return '-'
def prec_USub(self, n):
return 800
def visit_Num(self, n):
return str(n.n)
def prec_Num(self, n):
return 1000
def generic_visit(self, n):
if isinstance(n, ast.AST):
return r'' % (n.__class__.__name__, ', '.join(map(self.visit, [getattr(n, f) for f in n._fields])))
else:
return str(n)
def generic_prec(self, n):
return 0
class Latex(ast.NodeVisitor):
def prec(self, n):
return getattr(self, 'prec_'+n.__class__.__name__, getattr(self, 'generic_prec'))(n)
def visit_Call(self, n):
func = self.visit(n.func)
args = ', '.join(map(self.visit, n.args))
if func == 'sqrt':
return '\sqrt{%s}' % args
else:
return r'\operatorname{%s}\left(%s\right)' % (func, args)
def prec_Call(self, n):
return 1000
def visit_Name(self, n):
return n.id
def prec_Name(self, n):
return 1000
def visit_UnaryOp(self, n):
if self.prec(n.op) > self.prec(n.operand):
return r'%s \left(%s\right)' % (self.visit(n.op), self.visit(n.operand))
else:
return r'%s %s' % (self.visit(n.op), self.visit(n.operand))
def prec_UnaryOp(self, n):
return self.prec(n.op)
def visit_BinOp(self, n):
if self.prec(n.op) > self.prec(n.left):
left = r'\left(%s\right)' % self.visit(n.left)
else:
left = self.visit(n.left)
if self.prec(n.op) > self.prec(n.right):
right = r'\left(%s\right)' % self.visit(n.right)
else:
right = self.visit(n.right)
if isinstance(n.op, ast.Div):
return r'\frac{%s}{%s}' % (self.visit(n.left), self.visit(n.right))
elif isinstance(n.op, ast.FloorDiv):
return r'\left\lfloor\frac{%s}{%s}\right\rfloor' % (self.visit(n.left), self.visit(n.right))
elif isinstance(n.op, ast.Pow):
return r'%s^{%s}' % (left, self.visit(n.right))
else:
return r'%s %s %s' % (left, self.visit(n.op), right)
def prec_BinOp(self, n):
return self.prec(n.op)
def visit_Sub(self, n):
return '-'
def prec_Sub(self, n):
return 300
def visit_Add(self, n):
return '+'
def prec_Add(self, n):
return 300
def visit_Mult(self, n):
return '\\;'
def prec_Mult(self, n):
return 400
def visit_Mod(self, n):
return '\\bmod'
def prec_Mod(self, n):
return 500
def prec_Pow(self, n):
return 700
def prec_Div(self, n):
return 400
def prec_FloorDiv(self, n):
return 400
def visit_Invert(self, n):
return '\\operatorname{invert}'
def prec_Invert(self, n):
return 800
def visit_Not(self, n):
return '\\neg'
def prec_Not(self, n):
return 800
def visit_UAdd(self, n):
return '+'
def prec_UAdd(self, n):
return 800
def visit_USub(self, n):
return '-'
def prec_USub(self, n):
return 800
def visit_Num(self, n):
return str(n.n)
def prec_Num(self, n):
return 1000
def generic_visit(self, n):
if isinstance(n, ast.AST):
return r'' % (n.__class__.__name__, ', '.join(map(self.visit, [getattr(n, f) for f in n._fields])))
else:
return str(n)
def generic_prec(self, n):
return 0
class xpp(ast.NodeVisitor):
def prec(self, n):
return getattr(self, 'prec_'+n.__class__.__name__, getattr(self, 'generic_prec'))(n)
def visit_Call(self, n):
func = self.visit(n.func)
args = ', '.join(map(self.visit, n.args))
return r'%s(%s)' % (func, args)
def prec_Call(self, n):
return 1000
def visit_Name(self, n):
return n.id
def prec_Name(self, n):
return 1000
def visit_UnaryOp(self, n):
if self.prec(n.op) > self.prec(n.operand):
return r'%s (%s)' % (self.visit(n.op), self.visit(n.operand))
else:
return r'%s %s' % (self.visit(n.op), self.visit(n.operand))
def prec_UnaryOp(self, n):
return self.prec(n.op)
def visit_BinOp(self, n):
if self.prec(n.op) > self.prec(n.left):
left = r'(%s)' % self.visit(n.left)
else:
left = self.visit(n.left)
if self.prec(n.op) > self.prec(n.right):
right = r'(%s)' % self.visit(n.right)
else:
right = self.visit(n.right)
if isinstance(n.op, ast.FloorDiv):
return r'flr(%s/%s)' % (self.visit(n.left), self.visit(n.right))
elif isinstance(n.op, ast.Mod):
return r'mod(%s,%s)' % (self.visit(n.left), self.visit(n.right))
else:
return r'%s %s %s' % (left, self.visit(n.op), right)
def prec_BinOp(self, n):
return self.prec(n.op)
def visit_Sub(self, n):
return '-'
def prec_Sub(self, n):
return 300
def visit_Add(self, n):
return '+'
def prec_Add(self, n):
return 300
def visit_Mult(self, n):
return '*'
def prec_Mult(self, n):
return 400
def visit_Mod(self, n):
return 'mod'
def prec_Mod(self, n):
return 500
def visit_Pow(self, n):
return '^'
def prec_Pow(self, n):
return 700
def visit_BitXor(self, n):
return '^'
def prec_BitXor(self, n):
return 700
def visit_Div(self, n):
return '/'
def prec_Div(self, n):
return 400
def prec_FloorDiv(self, n):
return 400
def visit_Invert(self, n):
return '-'
def prec_Invert(self, n):
return 800
def visit_Not(self, n):
return '~'
def prec_Not(self, n):
return 800
def visit_UAdd(self, n):
return '+'
def prec_UAdd(self, n):
return 800
def visit_USub(self, n):
return '-'
def prec_USub(self, n):
return 800
def visit_Num(self, n):
return str(n.n)
def prec_Num(self, n):
return 1000
def generic_visit(self, n):
if isinstance(n, ast.AST):
return r'' % (n.__class__.__name__, ', '.join(map(self.visit, [getattr(n, f) for f in n._fields])))
else:
return str(n)
def generic_prec(self, n):
return 0