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authorNathan Binkert <binkertn@umich.edu>2007-05-24 21:54:51 -0700
committerNathan Binkert <binkertn@umich.edu>2007-05-24 21:54:51 -0700
commit44ebb8d3e27329e9f0b501897585359b4ab696f2 (patch)
tree536ed9dba1458f0d13d680ccfbb5f7ec3b79109c /ext/ply/example/BASIC/basiclex.py
parent9f1c104ccd835ce390d9e9fd24e59a6ea626ed17 (diff)
downloadgem5-44ebb8d3e27329e9f0b501897585359b4ab696f2.tar.xz
Update to ply 2.3
ext/ply/ply/lex.py: ext/ply/ply/yacc.py: ext/ply/CHANGES: ext/ply/README: ext/ply/TODO: ext/ply/doc/ply.html: ext/ply/example/ansic/clex.py: ext/ply/example/ansic/cparse.py: ext/ply/example/calc/calc.py: ext/ply/example/hedit/hedit.py: ext/ply/example/optcalc/calc.py: ext/ply/test/README: ext/ply/test/calclex.py: ext/ply/test/lex_doc1.exp: ext/ply/test/lex_doc1.py: ext/ply/test/lex_dup1.exp: ext/ply/test/lex_dup1.py: ext/ply/test/lex_dup2.exp: ext/ply/test/lex_dup2.py: ext/ply/test/lex_dup3.exp: ext/ply/test/lex_dup3.py: ext/ply/test/lex_empty.py: ext/ply/test/lex_error1.py: ext/ply/test/lex_error2.py: ext/ply/test/lex_error3.exp: ext/ply/test/lex_error3.py: ext/ply/test/lex_error4.exp: ext/ply/test/lex_error4.py: ext/ply/test/lex_hedit.exp: ext/ply/test/lex_hedit.py: ext/ply/test/lex_ignore.exp: ext/ply/test/lex_ignore.py: ext/ply/test/lex_re1.exp: ext/ply/test/lex_re1.py: ext/ply/test/lex_rule1.py: ext/ply/test/lex_token1.py: ext/ply/test/lex_token2.py: ext/ply/test/lex_token3.py: ext/ply/test/lex_token4.py: ext/ply/test/lex_token5.exp: ext/ply/test/lex_token5.py: ext/ply/test/yacc_badargs.exp: ext/ply/test/yacc_badargs.py: ext/ply/test/yacc_badprec.exp: ext/ply/test/yacc_badprec.py: ext/ply/test/yacc_badprec2.exp: ext/ply/test/yacc_badprec2.py: ext/ply/test/yacc_badrule.exp: ext/ply/test/yacc_badrule.py: ext/ply/test/yacc_badtok.exp: ext/ply/test/yacc_badtok.py: ext/ply/test/yacc_dup.exp: ext/ply/test/yacc_dup.py: ext/ply/test/yacc_error1.exp: ext/ply/test/yacc_error1.py: ext/ply/test/yacc_error2.exp: ext/ply/test/yacc_error2.py: ext/ply/test/yacc_error3.exp: ext/ply/test/yacc_error3.py: ext/ply/test/yacc_inf.exp: ext/ply/test/yacc_inf.py: ext/ply/test/yacc_missing1.exp: ext/ply/test/yacc_missing1.py: ext/ply/test/yacc_nodoc.exp: ext/ply/test/yacc_nodoc.py: ext/ply/test/yacc_noerror.exp: ext/ply/test/yacc_noerror.py: ext/ply/test/yacc_nop.exp: ext/ply/test/yacc_nop.py: ext/ply/test/yacc_notfunc.exp: ext/ply/test/yacc_notfunc.py: ext/ply/test/yacc_notok.exp: ext/ply/test/yacc_notok.py: ext/ply/test/yacc_rr.exp: ext/ply/test/yacc_rr.py: ext/ply/test/yacc_simple.exp: ext/ply/test/yacc_simple.py: ext/ply/test/yacc_sr.exp: ext/ply/test/yacc_sr.py: ext/ply/test/yacc_term1.exp: ext/ply/test/yacc_term1.py: ext/ply/test/yacc_unused.exp: ext/ply/test/yacc_unused.py: ext/ply/test/yacc_uprec.exp: ext/ply/test/yacc_uprec.py: Import patch ply.diff src/arch/isa_parser.py: everything is now within the ply package --HG-- rename : ext/ply/lex.py => ext/ply/ply/lex.py rename : ext/ply/yacc.py => ext/ply/ply/yacc.py extra : convert_revision : fca8deabd5c095bdeabd52a1f236ae1404ef106e
Diffstat (limited to 'ext/ply/example/BASIC/basiclex.py')
-rw-r--r--ext/ply/example/BASIC/basiclex.py74
1 files changed, 74 insertions, 0 deletions
diff --git a/ext/ply/example/BASIC/basiclex.py b/ext/ply/example/BASIC/basiclex.py
new file mode 100644
index 000000000..727383f2b
--- /dev/null
+++ b/ext/ply/example/BASIC/basiclex.py
@@ -0,0 +1,74 @@
+# An implementation of Dartmouth BASIC (1964)
+
+from ply import *
+
+keywords = (
+ 'LET','READ','DATA','PRINT','GOTO','IF','THEN','FOR','NEXT','TO','STEP',
+ 'END','STOP','DEF','GOSUB','DIM','REM','RETURN','RUN','LIST','NEW',
+)
+
+tokens = keywords + (
+ 'EQUALS','PLUS','MINUS','TIMES','DIVIDE','POWER',
+ 'LPAREN','RPAREN','LT','LE','GT','GE','NE',
+ 'COMMA','SEMI', 'INTEGER','FLOAT', 'STRING',
+ 'ID','NEWLINE'
+)
+
+t_ignore = ' \t'
+
+def t_REM(t):
+ r'REM .*'
+ return t
+
+def t_ID(t):
+ r'[A-Z][A-Z0-9]*'
+ if t.value in keywords:
+ t.type = t.value
+ return t
+
+t_EQUALS = r'='
+t_PLUS = r'\+'
+t_MINUS = r'-'
+t_TIMES = r'\*'
+t_POWER = r'\^'
+t_DIVIDE = r'/'
+t_LPAREN = r'\('
+t_RPAREN = r'\)'
+t_LT = r'<'
+t_LE = r'<='
+t_GT = r'>'
+t_GE = r'>='
+t_NE = r'<>'
+t_COMMA = r'\,'
+t_SEMI = r';'
+t_INTEGER = r'\d+'
+t_FLOAT = r'((\d*\.\d+)(E[\+-]?\d+)?|([1-9]\d*E[\+-]?\d+))'
+t_STRING = r'\".*?\"'
+
+def t_NEWLINE(t):
+ r'\n'
+ t.lexer.lineno += 1
+ return t
+
+def t_error(t):
+ print "Illegal character", t.value[0]
+ t.lexer.skip(1)
+
+lex.lex()
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+