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authorGuido van Rossum <guido@python.org>1998-09-14 16:44:15 (GMT)
committerGuido van Rossum <guido@python.org>1998-09-14 16:44:15 (GMT)
commit4117e5428bf1ff3d26d23bd77472265412473ad9 (patch)
treed3a38e1c85eb46e5299cec0d5fb358cdc1db28fe /Demo/parser/example.py
parentf9a6d7d49425a04b10e4373077230c6cb93c5817 (diff)
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Diffstat (limited to 'Demo/parser/example.py')
-rw-r--r--Demo/parser/example.py146
1 files changed, 73 insertions, 73 deletions
diff --git a/Demo/parser/example.py b/Demo/parser/example.py
index 363f5bb..821cef0 100644
--- a/Demo/parser/example.py
+++ b/Demo/parser/example.py
@@ -14,7 +14,7 @@ def get_docs(fileName):
"""Retrieve information from the parse tree of a source file.
fileName
- Name of the file to read Python source code from.
+ Name of the file to read Python source code from.
"""
source = open(fileName).read()
import os
@@ -30,86 +30,86 @@ class SuiteInfoBase:
_name = ''
def __init__(self, tree = None):
- self._class_info = {}
- self._function_info = {}
- if tree:
- self._extract_info(tree)
+ self._class_info = {}
+ self._function_info = {}
+ if tree:
+ self._extract_info(tree)
def _extract_info(self, tree):
- # extract docstring
- if len(tree) == 2:
- found, vars = match(DOCSTRING_STMT_PATTERN[1], tree[1])
- else:
- found, vars = match(DOCSTRING_STMT_PATTERN, tree[3])
- if found:
- self._docstring = eval(vars['docstring'])
- # discover inner definitions
- for node in tree[1:]:
- found, vars = match(COMPOUND_STMT_PATTERN, node)
- if found:
- cstmt = vars['compound']
- if cstmt[0] == symbol.funcdef:
- name = cstmt[2][1]
- self._function_info[name] = FunctionInfo(cstmt)
- elif cstmt[0] == symbol.classdef:
- name = cstmt[2][1]
- self._class_info[name] = ClassInfo(cstmt)
+ # extract docstring
+ if len(tree) == 2:
+ found, vars = match(DOCSTRING_STMT_PATTERN[1], tree[1])
+ else:
+ found, vars = match(DOCSTRING_STMT_PATTERN, tree[3])
+ if found:
+ self._docstring = eval(vars['docstring'])
+ # discover inner definitions
+ for node in tree[1:]:
+ found, vars = match(COMPOUND_STMT_PATTERN, node)
+ if found:
+ cstmt = vars['compound']
+ if cstmt[0] == symbol.funcdef:
+ name = cstmt[2][1]
+ self._function_info[name] = FunctionInfo(cstmt)
+ elif cstmt[0] == symbol.classdef:
+ name = cstmt[2][1]
+ self._class_info[name] = ClassInfo(cstmt)
def get_docstring(self):
- return self._docstring
+ return self._docstring
def get_name(self):
- return self._name
+ return self._name
def get_class_names(self):
- return self._class_info.keys()
+ return self._class_info.keys()
def get_class_info(self, name):
- return self._class_info[name]
+ return self._class_info[name]
def __getitem__(self, name):
- try:
- return self._class_info[name]
- except KeyError:
- return self._function_info[name]
+ try:
+ return self._class_info[name]
+ except KeyError:
+ return self._function_info[name]
class SuiteFuncInfo:
# Mixin class providing access to function names and info.
def get_function_names(self):
- return self._function_info.keys()
+ return self._function_info.keys()
def get_function_info(self, name):
- return self._function_info[name]
+ return self._function_info[name]
class FunctionInfo(SuiteInfoBase, SuiteFuncInfo):
def __init__(self, tree = None):
- self._name = tree[2][1]
- SuiteInfoBase.__init__(self, tree and tree[-1] or None)
+ self._name = tree[2][1]
+ SuiteInfoBase.__init__(self, tree and tree[-1] or None)
class ClassInfo(SuiteInfoBase):
def __init__(self, tree = None):
- self._name = tree[2][1]
- SuiteInfoBase.__init__(self, tree and tree[-1] or None)
+ self._name = tree[2][1]
+ SuiteInfoBase.__init__(self, tree and tree[-1] or None)
def get_method_names(self):
- return self._function_info.keys()
+ return self._function_info.keys()
def get_method_info(self, name):
- return self._function_info[name]
+ return self._function_info[name]
class ModuleInfo(SuiteInfoBase, SuiteFuncInfo):
def __init__(self, tree = None, name = "<string>"):
- self._name = name
- SuiteInfoBase.__init__(self, tree)
- if tree:
- found, vars = match(DOCSTRING_STMT_PATTERN, tree[1])
- if found:
- self._docstring = vars["docstring"]
+ self._name = name
+ SuiteInfoBase.__init__(self, tree)
+ if tree:
+ found, vars = match(DOCSTRING_STMT_PATTERN, tree[1])
+ if found:
+ self._docstring = vars["docstring"]
from types import ListType, TupleType
@@ -118,14 +118,14 @@ def match(pattern, data, vars=None):
"""Match `data' to `pattern', with variable extraction.
pattern
- Pattern to match against, possibly containing variables.
+ Pattern to match against, possibly containing variables.
data
- Data to be checked and against which variables are extracted.
+ Data to be checked and against which variables are extracted.
vars
- Dictionary of variables which have already been found. If not
- provided, an empty dictionary is created.
+ Dictionary of variables which have already been found. If not
+ provided, an empty dictionary is created.
The `pattern' value may contain variables of the form ['varname'] which
are allowed to match anything. The value that is matched is returned as
@@ -138,18 +138,18 @@ def match(pattern, data, vars=None):
values.
"""
if vars is None:
- vars = {}
- if type(pattern) is ListType: # 'variables' are ['varname']
- vars[pattern[0]] = data
- return 1, vars
+ vars = {}
+ if type(pattern) is ListType: # 'variables' are ['varname']
+ vars[pattern[0]] = data
+ return 1, vars
if type(pattern) is not TupleType:
- return (pattern == data), vars
+ return (pattern == data), vars
if len(data) != len(pattern):
- return 0, vars
+ return 0, vars
for pattern, data in map(None, pattern, data):
- same, vars = match(pattern, data, vars)
- if not same:
- break
+ same, vars = match(pattern, data, vars)
+ if not same:
+ break
return same, vars
@@ -172,21 +172,21 @@ DOCSTRING_STMT_PATTERN = (
(symbol.small_stmt,
(symbol.expr_stmt,
(symbol.testlist,
- (symbol.test,
- (symbol.and_test,
- (symbol.not_test,
- (symbol.comparison,
- (symbol.expr,
- (symbol.xor_expr,
- (symbol.and_expr,
- (symbol.shift_expr,
- (symbol.arith_expr,
- (symbol.term,
- (symbol.factor,
- (symbol.power,
- (symbol.atom,
- (token.STRING, ['docstring'])
- )))))))))))))))),
+ (symbol.test,
+ (symbol.and_test,
+ (symbol.not_test,
+ (symbol.comparison,
+ (symbol.expr,
+ (symbol.xor_expr,
+ (symbol.and_expr,
+ (symbol.shift_expr,
+ (symbol.arith_expr,
+ (symbol.term,
+ (symbol.factor,
+ (symbol.power,
+ (symbol.atom,
+ (token.STRING, ['docstring'])
+ )))))))))))))))),
(token.NEWLINE, '')
))