Author: Stephan <step...@stzal.com>
Branch:
Changeset: r354:9ebc5003814d
Date: 2013-02-17 15:29 +0100
http://bitbucket.org/pypy/lang-js/changeset/9ebc5003814d/
Log: deleted unused file
diff --git a/js/newparser.py b/js/newparser.py
deleted file mode 100644
--- a/js/newparser.py
+++ /dev/null
@@ -1,95 +0,0 @@
-from pypy.rlib.parsing.ebnfparse import parse_ebnf, make_parse_function
-from pypy.rlib.parsing.parsing import ParseError, Rule
-from pypy.rlib.parsing.tree import RPythonVisitor, Symbol
-from js.jsobj import W_Number
-from js import operations
-import sys
-
-##try:
-## t = open("jsgrammar.txt").read()
-## regexs, rules, ToAST = parse_ebnf(t)
-##except ParseError,e:
-## print e.nice_error_message(filename="jsgrammar.txt",source=t)
-## sys.exit(1)
-##
-##def setstartrule(rules, start):
-## "takes the rule start and put it on the beginning of the rules"
-## oldpos = 0
-## newrules = [Rule("hacked_first_symbol", [[start, "EOF"]])] + rules
-## return newrules
-##
-##if len(sys.argv) == 1:
-## parse = make_parse_function(regexs, rules, eof=True)
-##else:
-## parse = make_parse_function(regexs, setstartrule(rules,sys.argv[1]),
eof=True)
-##
-##print rules[2].nonterminal
-##source = raw_input()
-##while source != "":
-## t = parse(source).children[0].visit(ToAST())[0]
-## print t
-## t.view()
-## source = raw_input()
-
-class EvalTreeBuilder(RPythonVisitor):
- BINOP_TO_CLS = {
- '+': operations.Plus,
- '-': operations.Minus,
- '*': operations.Mult,
- '/': operations.Div,
- '%': operations.Mod,
- }
- UNOP_TO_CLS = {
- '+': operations.UPlus,
- '-': operations.UMinus,
- '++': operations.Increment,
- '--': operations.Decrement,
- }
- def get_instance(self, symbol, cls):
- assert isinstance(symbol, Symbol)
- source_pos = symbol.token.source_pos
- # XXX some of the source positions are not perfect
- return cls(None, "no clue what self.type is used for",
- symbol.additional_info,
- source_pos.lineno,
- source_pos.columnno,
- source_pos.columnno + len(symbol.additional_info))
-
- def visit_DECIMALLITERAL(self, node):
- result = self.get_instance(node, operations.Number)
- result.num = float(node.additional_info)
- return result
-
- def string(self,node):
- print node.additional_info
- result = self.get_instance(node, operations.String)
- result.strval = node.additional_info[1:-1] #XXX should do unquoting
- return result
-
- visit_DOUBLESTRING = string
- visit_SINGLESTRING = string
-
- def binaryop(self, node):
- left = self.dispatch(node.children[0])
- for i in range((len(node.children) - 1) // 2):
- op = node.children[i * 2 + 1]
- result = self.get_instance(
- op, self.BINOP_TO_CLS[op.additional_info])
- right = self.dispatch(node.children[i * 2 + 2])
- result.left = left
- result.right = right
- left = result
- return left
-
- visit_additiveexpression = binaryop
- visit_multiplicativeexpression = binaryop
-
- def visit_unaryexpression(self, node):
- op = node.children[0]
- result = self.get_instance(
- op, self.UNOP_TO_CLS[op.additional_info])
- child = self.dispatch(node.children[1])
- result.expr = child
- result.postfix = False
- return result
-
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