def compile_function(self, code, ctx, fnpattern="fn"):
args = ", ".join(ctx.labels)
if code.count("\n") == 0 and not code.startswith("return"):
return "lambda {0}: ({1}) ".format(args, code)
fname = "{0}_{1}".format(fnpattern, self.nbfn)
self.nbfn += 1
fbody = "def {0}({1}):\n{2}".format(fname, args, indent(code))
ctx.functions.append(fbody)
return fname
def compile(self, node):
self.visit(node)
res = [
"#!/usr/bin/env python",
""
"from pwpeg import *",
"from pwpeg.helpers import *",
""
]
if self.code_start:
res.append("\n##############################################################\n# Start of included code")
res.append(self.code_start)
res.append("\n# End of included code\n##############################################################")
has_skips = False
res.append("\n# Forward declaration of Regular rules")
for name, sr in sorted(self.rules_simple.items()):
res.append("{0} = Rule().set_name(\"{1}\")".format(name, sr.name))
if sr.skip: has_skips = True
res.append("")
res.append("\n# Forward declaration of Function rules")
for name, fr in sorted(self.rules_function.items()):
res.append("{0} = FunctionRule().set_name(\"{1}\")".format(name, fr.name))
if fr.skip: has_skips = True
res.append("")
if has_skips:
res.append("\n# Skips")
for name, r in sorted(chain(self.rules_simple.items(), self.rules_function.items())):
if r.skip:
res.append("{0}.set_skip({1})".format(name, r.skip.name))
res.append("")
res.append("\n# Function Rules implementation")
for name, fr in sorted(self.rules_function.items()):
res.append("def _{0}{1}:".format(name, fr.args))
for fn in fr.ctx.functions:
res.append(indent(fn))
res.append("")
res.append(" return " + indent(fr.code)[4:])
res.append("{0}.set_fn(_{0})\n".format(name))
res.append("")
res.append("\n# Simple Rules implementation")
for name, sr in sorted(self.rules_simple.items()):
for fn in sr.ctx.functions:
res.append(fn)
res.append("")
if sr.code.startswith("Rule("):
res.append("{0}.set_productions(".format(name) + sr.code[5:] + "\n")
else:
res.append("{0}.set_productions(".format(name) + sr.code + ")\n")
res.append("")
if self.code_end:
res.append("\n##############################################################\n# Start of included code")
res.append(self.code_end)
res.append("\n# End of included code\n##############################################################")
return "\n".join(res)