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squeam.txt

Associated article: Prototyping Interpreters using Python Lex-Yacc

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Published source code accompanying the article by Shannon Behrens in which, to test the Python and PLY environment, he wrote a language called Squeamish that consists of only 850 lines of code. Also see SQUEAM.ZIP.

					Prototyping Interpreters using Python Lex-Yacc
by Shannon Behrens

Example 1:
def p_list(t):
    'list : LPAREN nodes RPAREN'    
    #^     ^       ^     ^          This comment is for illustration only.
    #t[0]  t[1]    t[2]  t[3]
    t[0] = t[2]



Listing One

"""This file contains the lexer rules ...
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