parsing w spark

[Vassilis Virvilis]

Halo,

I understand this is more related to spark than python but since I can't
find a spark related forum I thought I can ask here. If I missed one you
can point me to the right direction anyway...

A week ago I asked a question about parsing solutions on python. After a
semi careful evaluation of this group feedback I decided to use the
spark module. So currently I am trying to achieve the equivalent of a
print 'Hello world' in the compiler's world. What I would like to do is
to successfully parse the following line:

variable=value

And here is the grammar I am feeding spark.

bcfile ::= bcfile_cont
bcfile_cont ::= bcfile_cont NL  
bcfile_cont ::= bcfile_cont stmt
bcfile_cont ::=
stmt ::= IDENTIFIER OPERATOR IDENTIFIER NL

I have to mention that the scanner part works as expected, but I don't
really understand how I am supposed to debug the parsing stuff (p_*
functions).

Anyway here is the output of the program with the _dump function enabled
during parsing.

Type = 'IDENTIFIER' attr = 'VERSION'
Type = 'OPERATOR' attr = '='
Type = 'IDENTIFIER' attr = '1.23p12'
Type = 'NL' attr = '\012'
state 0
        START ::=  . bcfile EOF , 0
        bcfile ::=  . bcfile_cont , 0
        bcfile_cont ::=  . bcfile_cont NL , 0
        bcfile_cont ::=  . bcfile_cont stmt , 0
        bcfile_cont ::=  .  , 0
        bcfile ::= bcfile_cont .  , 0
        bcfile_cont ::= bcfile_cont . NL , 0
        bcfile_cont ::= bcfile_cont . stmt , 0
        START ::= bcfile . EOF , 0
        stmt ::=  . IDENTIFIER OPERATOR IDENTIFIER NL , 0

token Type = 'IDENTIFIER' attr = 'VERSION'

state 1

token Type = 'OPERATOR' attr = '='

state 2

token Type = 'IDENTIFIER' attr = '1.23p12'

Syntax error at Type = 'IDENTIFIER' attr = 'VERSION'' (line -1)


	.Bill