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change syntactical position of lambdef (was an atom, now is a test)

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Guido van Rossum 1993-11-30 14:57:42 +00:00
parent ae3b3a33d8
commit 57531fea90
3 changed files with 112 additions and 103 deletions
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@ -123,7 +123,7 @@ try_stmt: 'try' ':' suite (except_clause ':' suite)+ | 'try' ':' suite 'finally'
except_clause: 'except' [test [',' test]]
suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT
test: and_test ('or' and_test)*
test: and_test ('or' and_test)* | lambdef
and_test: not_test ('and' not_test)*
not_test: 'not' not_test | comparison
comparison: expr (comp_op expr)*
@ -135,9 +135,7 @@ shift_expr: arith_expr (('<<'|'>>') arith_expr)*
arith_expr: term (('+'|'-') term)*
term: factor (('*'|'/'|'%') factor)*
factor: ('+'|'-'|'~') factor | atom trailer*
atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | lambdef | NAME | NUMBER | STRING
# Note ambiguity in grammar: "lambda x: x[1]" could mean "(lambda x: x)[1]"
# but the parser is eager so interprets it as "lambda x: (x[1])"...
atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING
lambdef: 'lambda' [varargslist] ':' test
trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
subscript: test | [test] ':' [test]