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change syntactical position of lambdef (was an atom, now is a test)
This commit is contained in:
Guido van Rossum
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'
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except_clause: 'except' [test [',' test]]
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suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT
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test: and_test ('or' and_test)*
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test: and_test ('or' and_test)* | lambdef
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and_test: not_test ('and' not_test)*
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not_test: 'not' not_test | comparison
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comparison: expr (comp_op expr)*
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@ -135,9 +135,7 @@ shift_expr: arith_expr (('<<'|'>>') arith_expr)*
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arith_expr: term (('+'|'-') term)*
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term: factor (('*'|'/'|'%') factor)*
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factor: ('+'|'-'|'~') factor | atom trailer*
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atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | lambdef | NAME | NUMBER | STRING
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# Note ambiguity in grammar: "lambda x: x[1]" could mean "(lambda x: x)[1]"
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# but the parser is eager so interprets it as "lambda x: (x[1])"...
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atom: '(' [testlist] ')' | '[' [testlist] ']' | '{' [dictmaker] '}' | '`' testlist '`' | NAME | NUMBER | STRING
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lambdef: 'lambda' [varargslist] ':' test
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trailer: '(' [testlist] ')' | '[' subscript ']' | '.' NAME
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subscript: test | [test] ':' [test]
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@ -659,18 +659,6 @@ com_atom(c, n)
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}
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com_addoparg(c, LOAD_CONST, i);
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break;
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case lambdef:
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if ((v = (object *) compile(ch, c->c_filename)) == NULL) {
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c->c_errors++;
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i = 255;
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}
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else {
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i = com_addconst(c, v);
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DECREF(v);
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}
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com_addoparg(c, LOAD_CONST, i);
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com_addbyte(c, BUILD_FUNCTION);
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break;
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case NAME:
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com_addopname(c, LOAD_NAME, ch);
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break;
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@ -1106,20 +1094,35 @@ com_test(c, n)
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struct compiling *c;
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node *n;
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{
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int i;
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int anchor;
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REQ(n, test); /* and_test ('and' and_test)* */
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anchor = 0;
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i = 0;
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for (;;) {
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com_and_test(c, CHILD(n, i));
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if ((i += 2) >= NCH(n))
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break;
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com_addfwref(c, JUMP_IF_TRUE, &anchor);
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com_addbyte(c, POP_TOP);
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REQ(n, test); /* and_test ('and' and_test)* | lambdef */
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if (NCH(n) == 1 && TYPE(CHILD(n, 0)) == lambdef) {
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object *v;
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int i;
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v = (object *) compile(CHILD(n, 0), c->c_filename);
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if (v == NULL) {
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c->c_errors++;
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i = 255;
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}
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else {
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i = com_addconst(c, v);
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DECREF(v);
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}
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com_addoparg(c, LOAD_CONST, i);
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com_addbyte(c, BUILD_FUNCTION);
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}
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else {
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int anchor = 0;
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int i = 0;
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for (;;) {
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com_and_test(c, CHILD(n, i));
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if ((i += 2) >= NCH(n))
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break;
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com_addfwref(c, JUMP_IF_TRUE, &anchor);
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com_addbyte(c, POP_TOP);
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}
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if (anchor)
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com_backpatch(c, anchor);
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}
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if (anchor)
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com_backpatch(c, anchor);
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}
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static void
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@ -674,22 +674,31 @@ static state states_31[5] = {
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{1, arcs_31_3},
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{2, arcs_31_4},
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};
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static arc arcs_32_0[1] = {
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static arc arcs_32_0[2] = {
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{72, 1},
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{74, 2},
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};
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static arc arcs_32_1[2] = {
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{73, 0},
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{73, 3},
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{0, 1},
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};
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static state states_32[2] = {
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{1, arcs_32_0},
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static arc arcs_32_2[1] = {
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{0, 2},
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};
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static arc arcs_32_3[1] = {
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{72, 1},
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};
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static state states_32[4] = {
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{2, arcs_32_0},
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{2, arcs_32_1},
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{1, arcs_32_2},
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{1, arcs_32_3},
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};
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static arc arcs_33_0[1] = {
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{74, 1},
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{75, 1},
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};
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static arc arcs_33_1[2] = {
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{75, 0},
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{76, 0},
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{0, 1},
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};
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static state states_33[2] = {
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@ -697,11 +706,11 @@ static state states_33[2] = {
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{2, arcs_33_1},
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};
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static arc arcs_34_0[2] = {
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{76, 1},
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{77, 2},
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{77, 1},
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{78, 2},
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};
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static arc arcs_34_1[1] = {
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{74, 2},
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{75, 2},
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};
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static arc arcs_34_2[1] = {
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{0, 2},
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@ -715,7 +724,7 @@ static arc arcs_35_0[1] = {
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{54, 1},
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};
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static arc arcs_35_1[2] = {
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{78, 0},
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{79, 0},
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{0, 1},
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};
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static state states_35[2] = {
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@ -723,16 +732,16 @@ static state states_35[2] = {
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{2, arcs_35_1},
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};
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static arc arcs_36_0[10] = {
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{79, 1},
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{80, 1},
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{81, 1},
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{82, 1},
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{83, 1},
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{84, 1},
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{85, 1},
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{86, 1},
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{55, 1},
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{76, 2},
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{86, 3},
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{77, 2},
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{87, 3},
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};
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static arc arcs_36_1[1] = {
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{0, 1},
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@ -741,7 +750,7 @@ static arc arcs_36_2[1] = {
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{55, 1},
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};
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static arc arcs_36_3[2] = {
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{76, 1},
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{77, 1},
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{0, 3},
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};
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static state states_36[4] = {
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@ -751,10 +760,10 @@ static state states_36[4] = {
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{2, arcs_36_3},
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};
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static arc arcs_37_0[1] = {
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{87, 1},
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{88, 1},
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};
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static arc arcs_37_1[2] = {
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{88, 0},
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{89, 0},
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{0, 1},
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};
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static state states_37[2] = {
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@ -762,10 +771,10 @@ static state states_37[2] = {
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{2, arcs_37_1},
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};
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static arc arcs_38_0[1] = {
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{89, 1},
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{90, 1},
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};
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static arc arcs_38_1[2] = {
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{90, 0},
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{91, 0},
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{0, 1},
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};
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static state states_38[2] = {
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@ -773,10 +782,10 @@ static state states_38[2] = {
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{2, arcs_38_1},
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};
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static arc arcs_39_0[1] = {
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{91, 1},
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{92, 1},
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};
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static arc arcs_39_1[2] = {
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{92, 0},
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{93, 0},
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{0, 1},
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};
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static state states_39[2] = {
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@ -784,11 +793,11 @@ static state states_39[2] = {
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{2, arcs_39_1},
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};
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static arc arcs_40_0[1] = {
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{93, 1},
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{94, 1},
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};
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static arc arcs_40_1[3] = {
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{94, 0},
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{95, 0},
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{96, 0},
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{0, 1},
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};
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static state states_40[2] = {
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@ -796,11 +805,11 @@ static state states_40[2] = {
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{3, arcs_40_1},
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};
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static arc arcs_41_0[1] = {
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{96, 1},
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{97, 1},
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};
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static arc arcs_41_1[3] = {
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{97, 0},
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{98, 0},
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{99, 0},
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{0, 1},
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};
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static state states_41[2] = {
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@ -808,12 +817,12 @@ static state states_41[2] = {
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{3, arcs_41_1},
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};
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static arc arcs_42_0[1] = {
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{99, 1},
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{100, 1},
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};
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static arc arcs_42_1[4] = {
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{21, 0},
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{100, 0},
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{101, 0},
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{102, 0},
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{0, 1},
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};
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static state states_42[2] = {
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@ -821,16 +830,16 @@ static state states_42[2] = {
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{4, arcs_42_1},
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};
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static arc arcs_43_0[4] = {
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{97, 1},
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{98, 1},
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{102, 1},
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{103, 2},
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{99, 1},
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{103, 1},
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{104, 2},
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};
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static arc arcs_43_1[1] = {
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{99, 3},
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{100, 3},
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};
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static arc arcs_43_2[2] = {
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{104, 2},
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{105, 2},
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{0, 2},
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};
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static arc arcs_43_3[1] = {
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@ -842,12 +851,11 @@ static state states_43[4] = {
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{2, arcs_43_2},
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{1, arcs_43_3},
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};
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static arc arcs_44_0[8] = {
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static arc arcs_44_0[7] = {
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{16, 1},
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{105, 2},
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{107, 3},
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{110, 4},
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{111, 5},
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{106, 2},
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{108, 3},
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{111, 4},
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{12, 5},
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{112, 5},
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{113, 5},
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@ -858,11 +866,11 @@ static arc arcs_44_1[2] = {
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};
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static arc arcs_44_2[2] = {
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{9, 7},
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{106, 5},
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{107, 5},
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};
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static arc arcs_44_3[2] = {
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{108, 8},
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{109, 5},
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{109, 8},
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{110, 5},
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};
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static arc arcs_44_4[1] = {
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{9, 9},
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@ -874,16 +882,16 @@ static arc arcs_44_6[1] = {
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{18, 5},
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};
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static arc arcs_44_7[1] = {
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{106, 5},
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{107, 5},
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};
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static arc arcs_44_8[1] = {
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{109, 5},
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};
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static arc arcs_44_9[1] = {
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{110, 5},
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};
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static arc arcs_44_9[1] = {
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{111, 5},
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};
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static state states_44[10] = {
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{8, arcs_44_0},
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{7, arcs_44_0},
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{2, arcs_44_1},
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{2, arcs_44_2},
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{2, arcs_44_3},
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@ -919,7 +927,7 @@ static state states_45[5] = {
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};
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static arc arcs_46_0[3] = {
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{16, 1},
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{105, 2},
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{106, 2},
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{116, 3},
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};
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static arc arcs_46_1[2] = {
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@ -939,7 +947,7 @@ static arc arcs_46_5[1] = {
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{0, 5},
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};
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static arc arcs_46_6[1] = {
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{106, 5},
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{107, 5},
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};
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static state states_46[7] = {
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{3, arcs_46_0},
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@ -1064,11 +1072,11 @@ static state states_51[8] = {
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};
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static dfa dfas[52] = {
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{256, "single_input", 0, 3, states_0,
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"\004\030\001\000\250\360\057\040\007\020\000\000\106\112\047"},
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"\004\030\001\000\250\360\057\040\007\040\000\000\214\224\047"},
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{257, "file_input", 0, 2, states_1,
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"\204\030\001\000\250\360\057\040\007\020\000\000\106\112\047"},
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"\204\030\001\000\250\360\057\040\007\040\000\000\214\224\047"},
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{258, "eval_input", 0, 3, states_2,
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"\000\020\001\000\000\000\000\000\000\020\000\000\106\112\007"},
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"\000\020\001\000\000\000\000\000\000\040\000\000\214\224\007"},
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{259, "funcdef", 0, 6, states_3,
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"\000\010\000\000\000\000\000\000\000\000\000\000\000\000\000"},
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{260, "parameters", 0, 4, states_4,
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@ -1080,13 +1088,13 @@ static dfa dfas[52] = {
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{263, "fplist", 0, 3, states_7,
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"\000\020\001\000\000\000\000\000\000\000\000\000\000\000\000"},
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{264, "stmt", 0, 2, states_8,
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"\000\030\001\000\250\360\057\040\007\020\000\000\106\112\047"},
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"\000\030\001\000\250\360\057\040\007\040\000\000\214\224\047"},
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{265, "simple_stmt", 0, 4, states_9,
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"\000\020\001\000\250\360\057\000\000\020\000\000\106\112\007"},
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"\000\020\001\000\250\360\057\000\000\040\000\000\214\224\007"},
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{266, "small_stmt", 0, 2, states_10,
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"\000\020\001\000\250\360\057\000\000\020\000\000\106\112\007"},
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"\000\020\001\000\250\360\057\000\000\040\000\000\214\224\007"},
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{267, "expr_stmt", 0, 2, states_11,
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"\000\020\001\000\000\000\000\000\000\020\000\000\106\112\007"},
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"\000\020\001\000\000\000\000\000\000\040\000\000\214\224\007"},
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{268, "print_stmt", 0, 3, states_12,
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"\000\000\000\000\010\000\000\000\000\000\000\000\000\000\000"},
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{269, "del_stmt", 0, 3, states_13,
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@ -1126,45 +1134,45 @@ static dfa dfas[52] = {
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{286, "except_clause", 0, 5, states_30,
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"\000\000\000\000\000\000\000\000\040\000\000\000\000\000\000"},
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{287, "suite", 0, 5, states_31,
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"\004\020\001\000\250\360\057\000\000\020\000\000\106\112\007"},
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{288, "test", 0, 2, states_32,
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"\000\020\001\000\000\000\000\000\000\020\000\000\106\112\007"},
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"\004\020\001\000\250\360\057\000\000\040\000\000\214\224\007"},
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{288, "test", 0, 4, states_32,
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"\000\020\001\000\000\000\000\000\000\040\000\000\214\224\007"},
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{289, "and_test", 0, 2, states_33,
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"\000\020\001\000\000\000\000\000\000\020\000\000\106\112\007"},
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"\000\020\001\000\000\000\000\000\000\040\000\000\214\224\003"},
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{290, "not_test", 0, 3, states_34,
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"\000\020\001\000\000\000\000\000\000\020\000\000\106\112\007"},
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"\000\020\001\000\000\000\000\000\000\040\000\000\214\224\003"},
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{291, "comparison", 0, 2, states_35,
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"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
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"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
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{292, "comp_op", 0, 4, states_36,
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"\000\000\000\000\000\000\200\000\000\220\177\000\000\000\000"},
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"\000\000\000\000\000\000\200\000\000\040\377\000\000\000\000"},
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{293, "expr", 0, 2, states_37,
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"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
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"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
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{294, "xor_expr", 0, 2, states_38,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
|
||||
{295, "and_expr", 0, 2, states_39,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
|
||||
{296, "shift_expr", 0, 2, states_40,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
|
||||
{297, "arith_expr", 0, 2, states_41,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
|
||||
{298, "term", 0, 2, states_42,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
|
||||
{299, "factor", 0, 4, states_43,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
|
||||
{300, "atom", 0, 10, states_44,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\000\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\000\224\003"},
|
||||
{301, "lambdef", 0, 5, states_45,
|
||||
"\000\000\000\000\000\000\000\000\000\000\000\000\000\000\004"},
|
||||
{302, "trailer", 0, 7, states_46,
|
||||
"\000\000\001\000\000\000\000\000\000\000\000\000\000\002\020"},
|
||||
"\000\000\001\000\000\000\000\000\000\000\000\000\000\004\020"},
|
||||
{303, "subscript", 0, 4, states_47,
|
||||
"\000\120\001\000\000\000\000\000\000\020\000\000\106\112\007"},
|
||||
"\000\120\001\000\000\000\000\000\000\040\000\000\214\224\007"},
|
||||
{304, "exprlist", 0, 3, states_48,
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\000\000\000\214\224\003"},
|
||||
{305, "testlist", 0, 3, states_49,
|
||||
"\000\020\001\000\000\000\000\000\000\020\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\040\000\000\214\224\007"},
|
||||
{306, "dictmaker", 0, 5, states_50,
|
||||
"\000\020\001\000\000\000\000\000\000\020\000\000\106\112\007"},
|
||||
"\000\020\001\000\000\000\000\000\000\040\000\000\214\224\007"},
|
||||
{307, "classdef", 0, 8, states_51,
|
||||
"\000\000\000\000\000\000\000\000\000\000\000\000\000\000\040"},
|
||||
};
|
||||
|
|
@ -1243,6 +1251,7 @@ static label labels[118] = {
|
|||
{6, 0},
|
||||
{289, 0},
|
||||
{1, "or"},
|
||||
{301, 0},
|
||||
{290, 0},
|
||||
{1, "and"},
|
||||
{1, "not"},
|
||||
|
|
@ -1280,7 +1289,6 @@ static label labels[118] = {
|
|||
{306, 0},
|
||||
{27, 0},
|
||||
{25, 0},
|
||||
{301, 0},
|
||||
{2, 0},
|
||||
{3, 0},
|
||||
{1, "lambda"},
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue