def topy(obj):
"""The main compiler function - convert a code-doc into an ast node"""
# {{{ ln = line number if available (also set global \lineno)
global lineno
ln = getattr(obj, 'lineno', None)
if ln != None:
lineno = ln
# }}}
typ = type(obj).__name__
method = (getattr(objtopy, typ, None) or
getattr(objtopy, "_" + typ, None))
compilefunc = method and method.im_func
if compilefunc:
node = compilefunc(obj)
else:
debug()
raise CompileError("Cannot compile %s (of type %s)" % (obj, typ))
if ln:
node.lineno = ln
return node
def test(self, event, state):
res, returnVal = self.expectation.test(event, state)
if res == MATCH and debug:
debug()
return res, returnVal
def Symbol(symbol):
if symbol == data.true:
return ast.Const(True)
elif symbol == data.false:
return ast.Const(False)
elif symbol == data.none:
return ast.Const(None)
elif symbol.namespace == "":
return ast.Name(symbol.name)
else:
debug()
raise CompileError, "can't compile symbol with namespace: %s" % symbol
def defLanguage(name, parent, globs=None):
if globs is None:
import sys
debug()
globs = sys._getframe(-1).f_globals
existing = globs.get(name)
if isinstance(existing, Language):
if ((parent is None and existing.__impl__.parent is not None)
or (parent is not None
and existing.__impl__.parent.userlang is not parent)):
raise LanguageBaseException("base language for %s differs from"
" forward declaration" % name)
existing.__impl__.clear()
# Q: Is it ok if \existing is imported from another module?
return existing
else:
return Language(name, parent, globs['__name__'])
def defLanguage(name, parent, globs=None):
if globs is None:
import sys
debug()
globs = sys._getframe(-1).f_globals
existing = globs.get(name)
if isinstance(existing, Language):
if ((parent is None and existing.__impl__.parent is not None)
or (parent is not None and
existing.__impl__.parent.userlang is not parent)):
raise LanguageBaseException("base language for %s differs from"
" forward declaration" % name)
existing.__impl__.clear()
# Q: Is it ok if \existing is imported from another module?
return existing
else:
return Language(name, parent, globs['__name__'])
def compileGetOp(symbol):
lang = language.getLanguage(symbol.namespace)
if lang is None:
debug()
raise CompileError, "not an operator symbol: %s" % symbol
opmodname = lang.__module__
if opmodname == modulename:
langexpr = GlobalName(lang.__impl__.name)
else:
langexpr = ast.Getattr(ast.Subscript(logixglobal('lmodules'),
'OP_APPLY',
[ast.Const(opmodname)]),
lang.__impl__.name)
return ast.Subscript(
ast.Getattr(ast.Getattr(langexpr, '__impl__'), 'operators'),
'OP_APPLY',
[ast.Const(symbol.name)])
def cachedCodeCopy(code, linedelta=None):
t = type(code)
if t == flist:
args = [cachedCodeCopy(x, linedelta) for x in code.elems]
fields = dict([(name, cachedCodeCopy(val, linedelta))
for name, val in code.items()])
res = flist.new(args, fields)
copymeta(code, res)
return res
elif issubclass(t, (tuple, list)):
return t([cachedCodeCopy(x, linedelta) for x in code])
elif t == dict:
return dict([(name, cachedCodeCopy(x, linedelta))
for name, x in code.items()])
elif t == Symbol and getmeta(code, 'lineno') is not None:
sym = Symbol(code)
setmeta(sym, lineno=getmeta(code, 'lineno')+linedelta)
return sym
elif isOperatorType(t):
operands = cachedCodeCopy(code.__operands__, linedelta)
op = instantiateOp(t, operands, None)
copymeta(code, op)
lineno = getmeta(code, 'lineno')
if lineno is not None:
setmeta(op, lineno=lineno+linedelta)
return op
else:
assert t in (int, float, long, str, bool, Symbol, types.NoneType,
OperatorType), debug()
return code
def cachedCodeCopy(code, linedelta=None):
t = type(code)
if t == flist:
args = [cachedCodeCopy(x, linedelta) for x in code.elems]
fields = dict([(name, cachedCodeCopy(val, linedelta))
for name, val in code.items()])
res = flist.new(args, fields)
copymeta(code, res)
return res
elif issubclass(t, (tuple, list)):
return t([cachedCodeCopy(x, linedelta) for x in code])
elif t == dict:
return dict([(name, cachedCodeCopy(x, linedelta))
for name, x in code.items()])
elif t == Symbol and getmeta(code, 'lineno') is not None:
sym = Symbol(code)
setmeta(sym, lineno=getmeta(code, 'lineno') + linedelta)
return sym
elif isOperatorType(t):
operands = cachedCodeCopy(code.__operands__, linedelta)
op = instantiateOp(t, operands, None)
copymeta(code, op)
lineno = getmeta(code, 'lineno')
if lineno is not None:
setmeta(op, lineno=lineno + linedelta)
return op
else:
assert t in (int, float, long, str, bool, Symbol, types.NoneType,
OperatorType), debug()
return code
