我们从Python开源项目中，提取了以下45个代码示例，用于说明如何使用symbol.suite()。
def classdef(self, nodelist): # classdef: 'class' NAME ['(' [testlist] ')'] ':' suite name = nodelist[1][1] doc = self.get_docstring(nodelist[-1]) if nodelist[2][0] == token.COLON: bases = [] elif nodelist[3][0] == token.RPAR: bases = [] else: bases = self.com_bases(nodelist[3]) # code for class code = self.com_node(nodelist[-1]) if doc is not None: assert isinstance(code, Stmt) assert isinstance(code.nodes[0], Discard) del code.nodes[0] return Class(name, bases, doc, code, lineno=nodelist[1][2])
def parsesuite(self, text): """Return a modified parse tree for the given suite text.""" return self.transform(parser.suite(text))
def funcdef(self, nodelist): # -6 -5 -4 -3 -2 -1 # funcdef: [decorators] 'def' NAME parameters ':' suite # parameters: '(' [varargslist] ')' if len(nodelist) == 6: assert nodelist[0][0] == symbol.decorators decorators = self.decorators(nodelist[0][1:]) else: assert len(nodelist) == 5 decorators = None lineno = nodelist[-4][2] name = nodelist[-4][1] args = nodelist[-3][2] if args[0] == symbol.varargslist: names, defaults, flags = self.com_arglist(args[1:]) else: names = defaults = () flags = 0 doc = self.get_docstring(nodelist[-1]) # code for function code = self.com_node(nodelist[-1]) if doc is not None: assert isinstance(code, Stmt) assert isinstance(code.nodes[0], Discard) del code.nodes[0] return Function(decorators, name, names, defaults, flags, doc, code, lineno=lineno)
def if_stmt(self, nodelist): # if: test ':' suite ('elif' test ':' suite)* ['else' ':' suite] tests = [] for i in range(0, len(nodelist) - 3, 4): testNode = self.com_node(nodelist[i + 1]) suiteNode = self.com_node(nodelist[i + 3]) tests.append((testNode, suiteNode)) if len(nodelist) % 4 == 3: elseNode = self.com_node(nodelist[-1]) ## elseNode.lineno = nodelist[-1][1][2] else: elseNode = None return If(tests, elseNode, lineno=nodelist[0][2])
def while_stmt(self, nodelist): # 'while' test ':' suite ['else' ':' suite] testNode = self.com_node(nodelist[1]) bodyNode = self.com_node(nodelist[3]) if len(nodelist) > 4: elseNode = self.com_node(nodelist[6]) else: elseNode = None return While(testNode, bodyNode, elseNode, lineno=nodelist[0][2])
def suite(self, nodelist): # simple_stmt | NEWLINE INDENT NEWLINE* (stmt NEWLINE*)+ DEDENT if len(nodelist) == 1: return self.com_stmt(nodelist[0]) stmts = [] for node in nodelist: if node[0] == symbol.stmt: self.com_append_stmt(stmts, node) return Stmt(stmts) # -------------------------------------------------------------- # # EXPRESSION NODES (invoked by com_node()) #
def com_try_except_finally(self, nodelist): # ('try' ':' suite # ((except_clause ':' suite)+ ['else' ':' suite] ['finally' ':' suite] # | 'finally' ':' suite)) if nodelist[3][0] == token.NAME: # first clause is a finally clause: only try-finally return TryFinally(self.com_node(nodelist[2]), self.com_node(nodelist[5]), lineno=nodelist[0][2]) #tryexcept: [TryNode, [except_clauses], elseNode)] clauses = [] elseNode = None finallyNode = None for i in range(3, len(nodelist), 3): node = nodelist[i] if node[0] == symbol.except_clause: # except_clause: 'except' [expr [(',' | 'as') expr]] */ if len(node) > 2: expr1 = self.com_node(node[2]) if len(node) > 4: expr2 = self.com_assign(node[4], OP_ASSIGN) else: expr2 = None else: expr1 = expr2 = None clauses.append((expr1, expr2, self.com_node(nodelist[i+2]))) if node[0] == token.NAME: if node[1] == 'else': elseNode = self.com_node(nodelist[i+2]) elif node[1] == 'finally': finallyNode = self.com_node(nodelist[i+2]) try_except = TryExcept(self.com_node(nodelist[2]), clauses, elseNode, lineno=nodelist[0][2]) if finallyNode: return TryFinally(try_except, finallyNode, lineno=nodelist[0][2]) else: return try_except
def com_with(self, nodelist): # with_stmt: 'with' with_item (',' with_item)* ':' suite body = self.com_node(nodelist[-1]) for i in range(len(nodelist) - 3, 0, -2): ret = self.com_with_item(nodelist[i], body, nodelist[0][2]) if i == 1: return ret body = ret
def get_docstring(self, node, n=None): if n is None: n = node[0] node = node[1:] if n == symbol.suite: if len(node) == 1: return self.get_docstring(node[0]) for sub in node: if sub[0] == symbol.stmt: return self.get_docstring(sub) return None if n == symbol.file_input: for sub in node: if sub[0] == symbol.stmt: return self.get_docstring(sub) return None if n == symbol.atom: if node[0][0] == token.STRING: s = '' for t in node: s = s + eval(t[1]) return s return None if n == symbol.stmt or n == symbol.simple_stmt \ or n == symbol.small_stmt: return self.get_docstring(node[0]) if n in _doc_nodes and len(node) == 1: return self.get_docstring(node[0]) return None
