Revision: 17619
Author: [email protected]
Date: Mon Nov 11 14:46:29 2013 UTC
Log: Experimental lexer generator: More code generation.
[email protected]
BUG=
Review URL: https://codereview.chromium.org/68843002
http://code.google.com/p/v8/source/detail?r=17619
Modified:
/branches/experimental/parser/src/lexer/lexer_py.re
/branches/experimental/parser/tools/lexer_generator/dfa.py
=======================================
--- /branches/experimental/parser/src/lexer/lexer_py.re Mon Nov 11 07:52:15
2013 UTC
+++ /branches/experimental/parser/src/lexer/lexer_py.re Mon Nov 11 14:46:29
2013 UTC
@@ -100,7 +100,7 @@
"," { PUSH_TOKEN(COMMA); }
line_terminator+ { PUSH_LINE_TERMINATOR(); }
-whitespace { SKIP } # TODO implement skip
+whitespace { SKIP(); } # TODO implement skip
"\"" <<DoubleQuoteString>>
"'" <<SingleQuoteString>>
@@ -197,14 +197,14 @@
/./ <<continue>>
<MultiLineComment>
-"*/" { SKIP }
+"*/" { SKIP(); }
# need to force action
line_terminator+ { PUSH_LINE_TERMINATOR(); } <<continue>>
eof <<terminate>>
/./ <<continue>>
<HtmlComment>
-"-->" { SKIP }
+"-->" { SKIP(); }
# need to force action
line_terminator+ { PUSH_LINE_TERMINATOR(); } <<continue>>
eof <<terminate>>
=======================================
--- /branches/experimental/parser/tools/lexer_generator/dfa.py Mon Nov 11
14:22:00 2013 UTC
+++ /branches/experimental/parser/tools/lexer_generator/dfa.py Mon Nov 11
14:46:29 2013 UTC
@@ -59,7 +59,7 @@
# FIXME: add default action
code = '''
code_%s:
-fprintf(stderr, "state %s, char at hand is %%c\\n", c);
+fprintf(stderr, "state %s, char at hand is %%c (%%d)\\n", c, c);
''' % (self.node_number(), self.node_number())
for key, state in self.__transitions.items():
@@ -67,7 +67,18 @@
code += ''' {
c = *(++cursor);
goto code_%s;
-}''' % state.node_number()
+}
+''' % state.node_number()
+
+ action = self.action()
+ if action:
+ if action[1] == 'terminate':
+ code += 'return 0;'
+ elif action[1] == 'terminate_illegal':
+ code += 'return 1;'
+ else:
+ code += self.action()[1];
+
return code
class Dfa(Automaton):
--
--
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