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allow user-controlled label allocation

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Required to match some scripts
This commit is contained in:
Alex Bates 2020-11-08 15:45:15 +00:00
parent f811ed0b92
commit c794134d08
1 changed files with 12 additions and 4 deletions
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14
tools/compile_dsl_macros.py
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@ -154,7 +154,7 @@ class BaseCmd():
self.context.insert(0, ctx)
# must be overloaded
def opcode():
def opcode(self):
raise Exception()
def to_bytecode(self):
@ -242,10 +242,18 @@ class LabelAllocation(Visitor):
self.labels = []
def label_decl(self, tree):
# TODO: int labels
name = tree.children[0].children[0]
if name in self.labels:
raise CompileError(f"label `{name}' already declared", tree.meta)
try:
label_idx = int(name, base=0)
while len(self.labels) < label_idx:
self.labels.append(None)
self.labels.insert(label_idx, name)
except ValueError:
self.labels.append(name)
def gen_label(self):
@ -546,7 +554,7 @@ class Compile(Transformer):
}
def label_decl(self, tree):
if len(tree.children) == 0:
if len(tree.children) == 1:
label = tree.children[0]
return Cmd(0x03, label, meta=tree.meta)
else: