def test_topython_generates_code_for_rep0n(self):
rep = parsing.Rep0N(ParseTreeStub('a', False))
ast_ = ast.Module(passes.rule_topython(rep))
res = codegen.to_source(ast_)
self.assertEqual(res, ("while True:\n"
" if (not a):\n"
" break"))
def test_topython_generates_code_for_clauses(self):
clauses = parsing.Seq(
ParseTreeStub('a', False), ParseTreeStub('b', False))
res = codegen.to_source(ast.Module(passes.rule_topython(clauses)))
self.assertEqual(res, ("if (not a):\n"
" return False\n"
"if (not b):\n"
" return False"))
def test_topython_generates_code_for_complex_clauses(self):
clauses = parsing.Seq(ParseTreeStub('a', False),
parsing.Seq(ParseTreeStub('b', False)))
res = codegen.to_source(ast.Module(passes.rule_topython(clauses)))
self.assertEqual(res, ("if (not a):\n"
" return False\n"
"if (not b):\n"
" return False"))
def test_topython_inline_partially_inlinable_clauses(self):
clauses = parsing.Seq(ParseTreeStub('a', True),
ParseTreeStub('b', True),
ParseTreeStub('c', False))
res = codegen.to_source(ast.Module(passes.rule_topython(clauses)))
self.assertEqual(res, ("if (not (a and b)):\n"
" return False\n"
"if (not c):\n"
" return False"))
def test_topython_generates_code_for_rep0n(self):
rep = parsing.Rep0N(ParseTreeStub('a', False))
ast_ = ast.Module(passes.rule_topython(rep))
res = codegen.to_source(ast_)
self.assertEqual(
res,
("while True:\n"
" if (not a):\n"
" break"))
def test_topython_inline_partially_inlinable_clauses(self):
clauses = parsing.Seq(
ParseTreeStub('a', True),
ParseTreeStub('b', True),
ParseTreeStub('c', False))
res = codegen.to_source(ast.Module(passes.rule_topython(clauses)))
self.assertEqual(res, ("if (not (a and b)):\n"
" return False\n"
"if (not c):\n"
" return False"))
def help(self, rule):
res = passes.rule_topython(rule)
stmts = str(res)
if isinstance(res, list):
res = ast.Module(res)
code = codegen.to_source(res)
return '\n'.join([
"========= RULE ==========",
rule.dump_tree(), "========== AST ==========", stmts,
"========= CODE ==========", code, "========== END =========="
])
def test_topython_generates_code_for_parserdsl(self):
from pprint import pprint
from pyrser.dsl import EBNF
import pyrser.passes.dump_tree
dsl_rules = [
'bnf_dsl', 'rule', 'alternatives', 'sequences', 'sequence',
'ns_name', 'repeat', 'hook', 'param'
]
res, parser = [], EBNF()
#res.append(self.help(parser._rules['alternatives']))
for rule in dsl_rules:
res.append(
codegen.to_source(passes.parserrule_topython(parser, rule)))
def help(self, rule):
res = passes.rule_topython(rule)
stmts = str(res)
if isinstance(res, list):
res = ast.Module(res)
code = codegen.to_source(res)
return '\n'.join([
"========= RULE ==========",
rule.dump_tree(),
"========== AST ==========",
stmts,
"========= CODE ==========",
code,
"========== END =========="])
def test_topython_generates_code_for_alt(self):
alt = parsing.Alt(ParseTreeStub('a', False), ParseTreeStub('b', False))
res = codegen.to_source(ast.Module(passes.rule_topython(alt)))
self.assertEqual(res, ("try:\n"
" try:\n"
" if (not a):\n"
" raise AltFalse()\n"
" raise AltTrue()\n"
" except AltFalse:\n"
" pass\n"
" try:\n"
" if (not b):\n"
" raise AltFalse()\n"
" raise AltTrue()\n"
" except AltFalse:\n"
" pass\n"
" return False\n"
"except AltTrue:\n"
" pass"))
def test_topython_generates_code_for_complex_alt(self):
self.maxDiff = None
alt = parsing.Alt(
ParseTreeStub('a', False),
parsing.Seq(
ParseTreeStub('b', False),
parsing.Alt(
ParseTreeStub('c', False),
ParseTreeStub('d', False))))
res = codegen.to_source(ast.Module(passes.rule_topython(alt)))
self.assertEqual(res, ("try:\n"
" try:\n"
" if (not a):\n"
" raise AltFalse()\n"
" raise AltTrue()\n"
" except AltFalse:\n"
" pass\n"
" try:\n"
" if (not b):\n"
" raise AltFalse()\n"
" try:\n"
" try:\n"
" if (not c):\n"
" raise AltFalse()\n"
" raise AltTrue()\n"
" except AltFalse:\n"
" pass\n"
" try:\n"
" if (not d):\n"
" raise AltFalse()\n"
" raise AltTrue()\n"
" except AltFalse:\n"
" pass\n"
" raise AltFalse()\n"
" except AltTrue:\n"
" pass\n"
" raise AltTrue()\n"
" except AltFalse:\n"
" pass\n"
" return False\n"
"except AltTrue:\n"
" pass"))
def test_topython_generates_code_for_parserdsl(self):
from pprint import pprint
from pyrser.dsl import EBNF
import pyrser.passes.dump_tree
dsl_rules = [
'bnf_dsl',
'rule',
'alternatives',
'sequences',
'sequence',
'ns_name',
'repeat',
'hook',
'param']
res, parser = [], EBNF()
#res.append(self.help(parser._rules['alternatives']))
for rule in dsl_rules:
res.append(codegen.to_source(
passes.parserrule_topython(parser, rule)))
def test_topython_generates_code_for_inlined_repoptional(self):
rep = parsing.RepOptional(ParseTreeStub('a', True))
res = codegen.to_source(passes.rule_topython(rep))
self.assertEqual(res, "(a or True)")
def test_topython_generates_code_for_repoptional(self):
rep = parsing.RepOptional(ParseTreeStub('a', False))
ast_ = ast.Module(passes.rule_topython(rep))
res = codegen.to_source(ast_)
self.assertEqual(res, "if (not a):\n"
" pass")
def test_topython_inline_inlinable_clauses(self):
clauses = parsing.Seq(ParseTreeStub('a', True),
ParseTreeStub('b', True))
res = codegen.to_source(ast.Module(passes.rule_topython(clauses)))
self.assertEqual(res, "(a and b)")
def test_topython_generates_code_for_hook(self):
hook = parsing.Hook('hookname', tuple())
res = codegen.to_source(passes.rule_topython(hook))
self.assertEqual(res,
"self.evalHook('hookname', self.ruleNodes[(-1)])")
def test_topython_generates_code_for_rule(self):
rule = parsing.Rule('rulename')
res = codegen.to_source(passes.rule_topython(rule))
self.assertEqual(res, "self.evalRule('rulename')")
def test_topython_generates_code_for_calltrue(self):
method = parsing.BasicParser.read_char
call = parsing.CallTrue(method, 'a')
res = codegen.to_source(passes.rule_topython(call))
self.assertEqual(res, "lambda : (self.read_char('a') or True)")
def test_topython_generates_code_for_calltrue(self):
method = parsing.BasicParser.read_char
call = parsing.CallTrue(method, 'a')
res = codegen.to_source(passes.rule_topython(call))
self.assertEqual(res, "lambda : (self.read_char('a') or True)")
def test_topython_generates_code_for_hook(self):
hook = parsing.Hook('hookname', tuple())
res = codegen.to_source(passes.rule_topython(hook))
self.assertEqual(res,
"self.evalHook('hookname', self.ruleNodes[(-1)])")
def test_topython_generates_code_for_rule(self):
rule = parsing.Rule('rulename')
res = codegen.to_source(passes.rule_topython(rule))
self.assertEqual(res, "self.evalRule('rulename')")
def test_topython_generates_code_for_repoptional(self):
rep = parsing.RepOptional(ParseTreeStub('a', False))
ast_ = ast.Module(passes.rule_topython(rep))
res = codegen.to_source(ast_)
self.assertEqual(res, "if (not a):\n" " pass")
def test_topython_generates_code_for_inlined_repoptional(self):
rep = parsing.RepOptional(ParseTreeStub('a', True))
res = codegen.to_source(passes.rule_topython(rep))
self.assertEqual(res, "(a or True)")
def test_topython_inline_inlinable_clauses(self):
clauses = parsing.Seq(
ParseTreeStub('a', True), ParseTreeStub('b', True))
res = codegen.to_source(ast.Module(passes.rule_topython(clauses)))
self.assertEqual(res, "(a and b)")
