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locexpr() always returns a ForwardReference if it can't lookup it.

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This commit is contained in:
Chris Pressey 2018-09-07 15:03:41 +01:00
parent 07ef1e243a
commit 684b26dd5c
1 changed files with 12 additions and 12 deletions
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24
src/sixtypical/parser.py
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@ -357,19 +357,19 @@ class Parser(object):
accum.append(self.locexpr())
return accum
def locexpr(self, forward=False):
def locexpr(self):
if self.scanner.token in ('on', 'off', 'word') or self.scanner.token in self.context.consts or self.scanner.on_type('integer literal'):
return self.const()
elif forward:
else:
name = self.scanner.token
self.scanner.scan()
return ForwardReference(name)
else:
loc = self.lookup(self.scanner.token)
self.scanner.scan()
return loc
loc = self.context.fetch(name)
if loc:
return loc
else:
return ForwardReference(name)
def indlocexpr(self, forward=False):
def indlocexpr(self):
if self.scanner.consume('['):
loc = self.locexpr()
self.scanner.expect(']')
@ -380,10 +380,10 @@ class Parser(object):
loc = self.locexpr()
return AddressRef(loc)
else:
return self.indexed_locexpr(forward=forward)
return self.indexed_locexpr()
def indexed_locexpr(self, forward=False):
loc = self.locexpr(forward=forward)
def indexed_locexpr(self):
loc = self.locexpr()
if not isinstance(loc, str):
index = None
if self.scanner.consume('+'):
@ -483,7 +483,7 @@ class Parser(object):
elif self.scanner.token in ("copy",):
opcode = self.scanner.token
self.scanner.scan()
src = self.indlocexpr(forward=True)
src = self.indlocexpr()
self.scanner.expect(',')
dest = self.indlocexpr()
instr = SingleOp(self.scanner.line_number, opcode=opcode, dest=dest, src=src)