def interpret(ast):
# graphics.initialize()
for node in ast:
nodetype = node[0]
if nodetype == "word-element":
graphics.word(node[1])
elif nodetype == "tag-element":
tagname = node[1]
tagargs = node[2]
subast = node[3]
closetagname = node[4]
if tagname != closetagname: # this error has detected at the parse step.
graphics.warning("(mismatched" + tagname + " " + closetagname + ")")
else:
graphics.begintag(tagname, tagargs)
interpret(subast)
graphics.endtag()
elif nodetype == "javascript-element":
jstext = node[1]
jslexer = lex.lex(module=jstokens)
jsparser = yacc.yacc(module=jsgrammar,tabmodule="parsetabjs")
jsast = jsparser.parse(jstext,lexer=jslexer)
result = jsinterp.jsinterp(jsast)
htmlast = htmlparser.parse(result,lexer=htmllexer)
interpret(htmlast)
def interpret(ast):
# graphics.initialize()
for node in ast:
nodetype = node[0]
if nodetype == "word-element":
graphics.word(node[1])
elif nodetype == "tag-element":
tagname = node[1]
tagargs = node[2]
subast = node[3]
closetagname = node[4]
if tagname != closetagname: # this error has detected at the parse step.
graphics.warning("(mismatched" + tagname + " " + closetagname +
")")
else:
graphics.begintag(tagname, tagargs)
interpret(subast)
graphics.endtag()
elif nodetype == "javascript-element":
jstext = node[1]
jslexer = lex.lex(module=jstokens)
jsparser = yacc.yacc(module=jsgrammar, tabmodule="parsetabjs")
jsast = jsparser.parse(jstext, lexer=jslexer)
result = jsinterp.jsinterp(jsast)
htmlast = htmlparser.parse(result, lexer=htmllexer)
interpret(htmlast)
import ply.lex as lex
import ply.yacc as yacc
import jstokens
import jsgrammars
import jsinterp
jslexer = lex.lex(module=jstokens)
jsparser = yacc.yacc(module=jsgrammars)
f = open("fib.js")
contents = f.read()
parse_tree = jsparser.parse(contents, lexer=jslexer)
print(parse_tree)
print(jsinterp.jsinterp(parse_tree))
## python dictionary test
# env = {"a" : 1}
# print(env)
# env["b"] = 2
# print(env)
#
# a = (1, "a", "b")
# print(a)
# print(a + tuple("c"))
