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Added shifting and masking operators.

This commit is contained in:
Guido van Rossum 1991-10-24 14:54:25 +00:00
parent 1242f1da67
commit 9eb4f535aa
1 changed files with 11 additions and 3 deletions
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14
Grammar/Grammar
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@ -1,4 +1,8 @@
# Grammar for Python, version 6 # Grammar for Python, version 7
# Changes since version 6:
# Add logical operators '|', '^', '&' and '~'
# Add shift operators '<<' and '>>'
# Changes since version 5: # Changes since version 5:
# Comparison operators '<=' '>' '<>' are now 1 token # Comparison operators '<=' '>' '<>' are now 1 token
@ -73,9 +77,13 @@ and_test: not_test ('and' not_test)*
not_test: 'not' not_test | comparison not_test: 'not' not_test | comparison
comparison: expr (comp_op expr)* comparison: expr (comp_op expr)*
comp_op: '<'|'>'|'='|'>='|'<='|'<>'|'!='|'=='|'in'|'not' 'in'|'is'|'is' 'not' comp_op: '<'|'>'|'='|'>='|'<='|'<>'|'!='|'=='|'in'|'not' 'in'|'is'|'is' 'not'
expr: term (('+'|'-') term)* expr: xor_expr ('|' xor_expr)*
xor_expr: and_expr ('^' and_expr)*
and_expr: shift_expr ('&' shift_expr)*
shift_expr: arith_expr (('<<'|'>>') arith_expr)*
arith_expr: term (('+'|'-') term)*
term: factor (('*'|'/'|'%') factor)* term: factor (('*'|'/'|'%') factor)*
factor: ('+'|'-') factor | atom trailer* factor: ('+'|'-'|'~') factor | atom trailer*
atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING
trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
subscript: test | [test] ':' [test] subscript: test | [test] ':' [test]