mirror of https://github.com/python/cpython
1011 lines
47 KiB
Plaintext
1011 lines
47 KiB
Plaintext
# PEG grammar for Python
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@trailer '''
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void *
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_PyPegen_parse(Parser *p)
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{
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// Initialize keywords
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p->keywords = reserved_keywords;
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p->n_keyword_lists = n_keyword_lists;
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p->soft_keywords = soft_keywords;
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// Run parser
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void *result = NULL;
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if (p->start_rule == Py_file_input) {
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result = file_rule(p);
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} else if (p->start_rule == Py_single_input) {
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result = interactive_rule(p);
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} else if (p->start_rule == Py_eval_input) {
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result = eval_rule(p);
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} else if (p->start_rule == Py_func_type_input) {
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result = func_type_rule(p);
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} else if (p->start_rule == Py_fstring_input) {
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result = fstring_rule(p);
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}
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return result;
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}
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// The end
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'''
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file[mod_ty]: a=[statements] ENDMARKER { _PyPegen_make_module(p, a) }
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interactive[mod_ty]: a=statement_newline { _PyAST_Interactive(a, p->arena) }
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eval[mod_ty]: a=expressions NEWLINE* ENDMARKER { _PyAST_Expression(a, p->arena) }
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func_type[mod_ty]: '(' a=[type_expressions] ')' '->' b=expression NEWLINE* ENDMARKER { _PyAST_FunctionType(a, b, p->arena) }
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fstring[expr_ty]: star_expressions
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# type_expressions allow */** but ignore them
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type_expressions[asdl_expr_seq*]:
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| a=','.expression+ ',' '*' b=expression ',' '**' c=expression {
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(asdl_expr_seq*)_PyPegen_seq_append_to_end(
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p,
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CHECK(asdl_seq*, _PyPegen_seq_append_to_end(p, a, b)),
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c) }
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| a=','.expression+ ',' '*' b=expression { (asdl_expr_seq*)_PyPegen_seq_append_to_end(p, a, b) }
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| a=','.expression+ ',' '**' b=expression { (asdl_expr_seq*)_PyPegen_seq_append_to_end(p, a, b) }
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| '*' a=expression ',' '**' b=expression {
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(asdl_expr_seq*)_PyPegen_seq_append_to_end(
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p,
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CHECK(asdl_seq*, _PyPegen_singleton_seq(p, a)),
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b) }
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| '*' a=expression { (asdl_expr_seq*)_PyPegen_singleton_seq(p, a) }
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| '**' a=expression { (asdl_expr_seq*)_PyPegen_singleton_seq(p, a) }
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| a[asdl_expr_seq*]=','.expression+ {a}
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statements[asdl_stmt_seq*]: a=statement+ { (asdl_stmt_seq*)_PyPegen_seq_flatten(p, a) }
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statement[asdl_stmt_seq*]: a=compound_stmt { (asdl_stmt_seq*)_PyPegen_singleton_seq(p, a) } | a[asdl_stmt_seq*]=simple_stmts { a }
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statement_newline[asdl_stmt_seq*]:
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| a=compound_stmt NEWLINE { (asdl_stmt_seq*)_PyPegen_singleton_seq(p, a) }
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| simple_stmts
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| NEWLINE { (asdl_stmt_seq*)_PyPegen_singleton_seq(p, CHECK(stmt_ty, _PyAST_Pass(EXTRA))) }
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| ENDMARKER { _PyPegen_interactive_exit(p) }
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simple_stmts[asdl_stmt_seq*]:
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| a=simple_stmt !';' NEWLINE { (asdl_stmt_seq*)_PyPegen_singleton_seq(p, a) } # Not needed, there for speedup
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| a[asdl_stmt_seq*]=';'.simple_stmt+ [';'] NEWLINE { a }
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# NOTE: assignment MUST precede expression, else parsing a simple assignment
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# will throw a SyntaxError.
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simple_stmt[stmt_ty] (memo):
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| assignment
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| e=star_expressions { _PyAST_Expr(e, EXTRA) }
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| &'return' return_stmt
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| &('import' | 'from') import_stmt
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| &'raise' raise_stmt
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| 'pass' { _PyAST_Pass(EXTRA) }
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| &'del' del_stmt
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| &'yield' yield_stmt
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| &'assert' assert_stmt
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| 'break' { _PyAST_Break(EXTRA) }
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| 'continue' { _PyAST_Continue(EXTRA) }
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| &'global' global_stmt
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| &'nonlocal' nonlocal_stmt
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compound_stmt[stmt_ty]:
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| &('def' | '@' | ASYNC) function_def
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| &'if' if_stmt
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| &('class' | '@') class_def
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| &('with' | ASYNC) with_stmt
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| &('for' | ASYNC) for_stmt
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| &'try' try_stmt
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| &'while' while_stmt
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| match_stmt
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# NOTE: annotated_rhs may start with 'yield'; yield_expr must start with 'yield'
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assignment[stmt_ty]:
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| a=NAME ':' b=expression c=['=' d=annotated_rhs { d }] {
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CHECK_VERSION(
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stmt_ty,
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6,
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"Variable annotation syntax is",
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_PyAST_AnnAssign(CHECK(expr_ty, _PyPegen_set_expr_context(p, a, Store)), b, c, 1, EXTRA)
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) }
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| a=('(' b=single_target ')' { b }
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| single_subscript_attribute_target) ':' b=expression c=['=' d=annotated_rhs { d }] {
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CHECK_VERSION(stmt_ty, 6, "Variable annotations syntax is", _PyAST_AnnAssign(a, b, c, 0, EXTRA)) }
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| a[asdl_expr_seq*]=(z=star_targets '=' { z })+ b=(yield_expr | star_expressions) !'=' tc=[TYPE_COMMENT] {
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_PyAST_Assign(a, b, NEW_TYPE_COMMENT(p, tc), EXTRA) }
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| a=single_target b=augassign ~ c=(yield_expr | star_expressions) {
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_PyAST_AugAssign(a, b->kind, c, EXTRA) }
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| invalid_assignment
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augassign[AugOperator*]:
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| '+=' { _PyPegen_augoperator(p, Add) }
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| '-=' { _PyPegen_augoperator(p, Sub) }
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| '*=' { _PyPegen_augoperator(p, Mult) }
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| '@=' { CHECK_VERSION(AugOperator*, 5, "The '@' operator is", _PyPegen_augoperator(p, MatMult)) }
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| '/=' { _PyPegen_augoperator(p, Div) }
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| '%=' { _PyPegen_augoperator(p, Mod) }
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| '&=' { _PyPegen_augoperator(p, BitAnd) }
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| '|=' { _PyPegen_augoperator(p, BitOr) }
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| '^=' { _PyPegen_augoperator(p, BitXor) }
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| '<<=' { _PyPegen_augoperator(p, LShift) }
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| '>>=' { _PyPegen_augoperator(p, RShift) }
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| '**=' { _PyPegen_augoperator(p, Pow) }
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| '//=' { _PyPegen_augoperator(p, FloorDiv) }
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global_stmt[stmt_ty]: 'global' a[asdl_expr_seq*]=','.NAME+ {
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_PyAST_Global(CHECK(asdl_identifier_seq*, _PyPegen_map_names_to_ids(p, a)), EXTRA) }
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nonlocal_stmt[stmt_ty]: 'nonlocal' a[asdl_expr_seq*]=','.NAME+ {
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_PyAST_Nonlocal(CHECK(asdl_identifier_seq*, _PyPegen_map_names_to_ids(p, a)), EXTRA) }
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yield_stmt[stmt_ty]: y=yield_expr { _PyAST_Expr(y, EXTRA) }
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assert_stmt[stmt_ty]: 'assert' a=expression b=[',' z=expression { z }] { _PyAST_Assert(a, b, EXTRA) }
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del_stmt[stmt_ty]:
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| 'del' a=del_targets &(';' | NEWLINE) { _PyAST_Delete(a, EXTRA) }
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| invalid_del_stmt
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import_stmt[stmt_ty]: import_name | import_from
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import_name[stmt_ty]: 'import' a=dotted_as_names { _PyAST_Import(a, EXTRA) }
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# note below: the ('.' | '...') is necessary because '...' is tokenized as ELLIPSIS
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import_from[stmt_ty]:
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| 'from' a=('.' | '...')* b=dotted_name 'import' c=import_from_targets {
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_PyAST_ImportFrom(b->v.Name.id, c, _PyPegen_seq_count_dots(a), EXTRA) }
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| 'from' a=('.' | '...')+ 'import' b=import_from_targets {
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_PyAST_ImportFrom(NULL, b, _PyPegen_seq_count_dots(a), EXTRA) }
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import_from_targets[asdl_alias_seq*]:
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| '(' a=import_from_as_names [','] ')' { a }
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| import_from_as_names !','
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| '*' { (asdl_alias_seq*)_PyPegen_singleton_seq(p, CHECK(alias_ty, _PyPegen_alias_for_star(p, EXTRA))) }
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| invalid_import_from_targets
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import_from_as_names[asdl_alias_seq*]:
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| a[asdl_alias_seq*]=','.import_from_as_name+ { a }
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import_from_as_name[alias_ty]:
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| a=NAME b=['as' z=NAME { z }] { _PyAST_alias(a->v.Name.id,
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(b) ? ((expr_ty) b)->v.Name.id : NULL,
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EXTRA) }
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dotted_as_names[asdl_alias_seq*]:
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| a[asdl_alias_seq*]=','.dotted_as_name+ { a }
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dotted_as_name[alias_ty]:
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| a=dotted_name b=['as' z=NAME { z }] { _PyAST_alias(a->v.Name.id,
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(b) ? ((expr_ty) b)->v.Name.id : NULL,
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EXTRA) }
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dotted_name[expr_ty]:
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| a=dotted_name '.' b=NAME { _PyPegen_join_names_with_dot(p, a, b) }
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| NAME
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if_stmt[stmt_ty]:
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| invalid_if_stmt
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| 'if' a=named_expression ':' b=block c=elif_stmt {
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_PyAST_If(a, b, CHECK(asdl_stmt_seq*, _PyPegen_singleton_seq(p, c)), EXTRA) }
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| 'if' a=named_expression ':' b=block c=[else_block] { _PyAST_If(a, b, c, EXTRA) }
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elif_stmt[stmt_ty]:
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| invalid_elif_stmt
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| 'elif' a=named_expression ':' b=block c=elif_stmt {
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_PyAST_If(a, b, CHECK(asdl_stmt_seq*, _PyPegen_singleton_seq(p, c)), EXTRA) }
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| 'elif' a=named_expression ':' b=block c=[else_block] { _PyAST_If(a, b, c, EXTRA) }
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else_block[asdl_stmt_seq*]:
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| invalid_else_stmt
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| 'else' &&':' b=block { b }
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while_stmt[stmt_ty]:
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| invalid_while_stmt
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| 'while' a=named_expression ':' b=block c=[else_block] { _PyAST_While(a, b, c, EXTRA) }
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for_stmt[stmt_ty]:
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| invalid_for_stmt
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| 'for' t=star_targets 'in' ~ ex=star_expressions &&':' tc=[TYPE_COMMENT] b=block el=[else_block] {
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_PyAST_For(t, ex, b, el, NEW_TYPE_COMMENT(p, tc), EXTRA) }
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| ASYNC 'for' t=star_targets 'in' ~ ex=star_expressions &&':' tc=[TYPE_COMMENT] b=block el=[else_block] {
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CHECK_VERSION(stmt_ty, 5, "Async for loops are", _PyAST_AsyncFor(t, ex, b, el, NEW_TYPE_COMMENT(p, tc), EXTRA)) }
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| invalid_for_target
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with_stmt[stmt_ty]:
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| invalid_with_stmt_indent
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| 'with' '(' a[asdl_withitem_seq*]=','.with_item+ ','? ')' ':' b=block {
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_PyAST_With(a, b, NULL, EXTRA) }
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| 'with' a[asdl_withitem_seq*]=','.with_item+ ':' tc=[TYPE_COMMENT] b=block {
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_PyAST_With(a, b, NEW_TYPE_COMMENT(p, tc), EXTRA) }
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| ASYNC 'with' '(' a[asdl_withitem_seq*]=','.with_item+ ','? ')' ':' b=block {
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CHECK_VERSION(stmt_ty, 5, "Async with statements are", _PyAST_AsyncWith(a, b, NULL, EXTRA)) }
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| ASYNC 'with' a[asdl_withitem_seq*]=','.with_item+ ':' tc=[TYPE_COMMENT] b=block {
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CHECK_VERSION(stmt_ty, 5, "Async with statements are", _PyAST_AsyncWith(a, b, NEW_TYPE_COMMENT(p, tc), EXTRA)) }
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| invalid_with_stmt
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with_item[withitem_ty]:
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| e=expression 'as' t=star_target &(',' | ')' | ':') { _PyAST_withitem(e, t, p->arena) }
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| invalid_with_item
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| e=expression { _PyAST_withitem(e, NULL, p->arena) }
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try_stmt[stmt_ty]:
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| invalid_try_stmt
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| 'try' &&':' b=block f=finally_block { _PyAST_Try(b, NULL, NULL, f, EXTRA) }
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| 'try' &&':' b=block ex[asdl_excepthandler_seq*]=except_block+ el=[else_block] f=[finally_block] { _PyAST_Try(b, ex, el, f, EXTRA) }
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except_block[excepthandler_ty]:
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| invalid_except_stmt_indent
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| 'except' e=expression t=['as' z=NAME { z }] ':' b=block {
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_PyAST_ExceptHandler(e, (t) ? ((expr_ty) t)->v.Name.id : NULL, b, EXTRA) }
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| 'except' ':' b=block { _PyAST_ExceptHandler(NULL, NULL, b, EXTRA) }
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| invalid_except_stmt
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finally_block[asdl_stmt_seq*]:
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| invalid_finally_stmt
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| 'finally' &&':' a=block { a }
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match_stmt[stmt_ty]:
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| "match" subject=subject_expr ':' NEWLINE INDENT cases[asdl_match_case_seq*]=case_block+ DEDENT {
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CHECK_VERSION(stmt_ty, 10, "Pattern matching is", _PyAST_Match(subject, cases, EXTRA)) }
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| invalid_match_stmt
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subject_expr[expr_ty]:
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| value=star_named_expression ',' values=star_named_expressions? {
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_PyAST_Tuple(CHECK(asdl_expr_seq*, _PyPegen_seq_insert_in_front(p, value, values)), Load, EXTRA) }
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| named_expression
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case_block[match_case_ty]:
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| invalid_case_block
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| "case" pattern=patterns guard=guard? ':' body=block {
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_PyAST_match_case(pattern, guard, body, p->arena) }
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guard[expr_ty]: 'if' guard=named_expression { guard }
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patterns[pattern_ty]:
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| patterns[asdl_pattern_seq*]=open_sequence_pattern {
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_PyAST_MatchSequence(patterns, EXTRA) }
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| pattern
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pattern[pattern_ty]:
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| as_pattern
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| or_pattern
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as_pattern[pattern_ty]:
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| pattern=or_pattern 'as' target=pattern_capture_target {
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_PyAST_MatchAs(pattern, target->v.Name.id, EXTRA) }
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or_pattern[pattern_ty]:
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| patterns[asdl_pattern_seq*]='|'.closed_pattern+ {
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asdl_seq_LEN(patterns) == 1 ? asdl_seq_GET(patterns, 0) : _PyAST_MatchOr(patterns, EXTRA) }
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closed_pattern[pattern_ty]:
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| literal_pattern
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| capture_pattern
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| wildcard_pattern
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| value_pattern
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| group_pattern
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| sequence_pattern
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| mapping_pattern
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| class_pattern
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# Literal patterns are used for equality and identity constraints
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literal_pattern[pattern_ty]:
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| value=signed_number !('+' | '-') { _PyAST_MatchValue(value, EXTRA) }
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| value=complex_number { _PyAST_MatchValue(value, EXTRA) }
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| value=strings { _PyAST_MatchValue(value, EXTRA) }
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| 'None' { _PyAST_MatchSingleton(Py_None, EXTRA) }
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| 'True' { _PyAST_MatchSingleton(Py_True, EXTRA) }
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| 'False' { _PyAST_MatchSingleton(Py_False, EXTRA) }
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# Literal expressions are used to restrict permitted mapping pattern keys
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literal_expr[expr_ty]:
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| signed_number !('+' | '-')
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| complex_number
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| strings
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| 'None' { _PyAST_Constant(Py_None, NULL, EXTRA) }
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| 'True' { _PyAST_Constant(Py_True, NULL, EXTRA) }
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| 'False' { _PyAST_Constant(Py_False, NULL, EXTRA) }
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complex_number[expr_ty]:
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| real=signed_real_number '+' imag=imaginary_number {
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_PyAST_BinOp(real, Add, imag, EXTRA) }
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| real=signed_real_number '-' imag=imaginary_number {
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_PyAST_BinOp(real, Sub, imag, EXTRA) }
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signed_number[expr_ty]:
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| NUMBER
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| '-' number=NUMBER { _PyAST_UnaryOp(USub, number, EXTRA) }
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signed_real_number[expr_ty]:
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| real_number
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| '-' real=real_number { _PyAST_UnaryOp(USub, real, EXTRA) }
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real_number[expr_ty]:
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| real=NUMBER { _PyPegen_ensure_real(p, real) }
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imaginary_number[expr_ty]:
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| imag=NUMBER { _PyPegen_ensure_imaginary(p, imag) }
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capture_pattern[pattern_ty]:
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| target=pattern_capture_target { _PyAST_MatchAs(NULL, target->v.Name.id, EXTRA) }
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pattern_capture_target[expr_ty]:
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| !"_" name=NAME !('.' | '(' | '=') {
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_PyPegen_set_expr_context(p, name, Store) }
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wildcard_pattern[pattern_ty]:
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| "_" { _PyAST_MatchAs(NULL, NULL, EXTRA) }
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value_pattern[pattern_ty]:
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| attr=attr !('.' | '(' | '=') { _PyAST_MatchValue(attr, EXTRA) }
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attr[expr_ty]:
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| value=name_or_attr '.' attr=NAME {
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_PyAST_Attribute(value, attr->v.Name.id, Load, EXTRA) }
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name_or_attr[expr_ty]:
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| attr
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| NAME
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group_pattern[pattern_ty]:
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| '(' pattern=pattern ')' { pattern }
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sequence_pattern[pattern_ty]:
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| '[' patterns=maybe_sequence_pattern? ']' { _PyAST_MatchSequence(patterns, EXTRA) }
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| '(' patterns=open_sequence_pattern? ')' { _PyAST_MatchSequence(patterns, EXTRA) }
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open_sequence_pattern[asdl_seq*]:
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| pattern=maybe_star_pattern ',' patterns=maybe_sequence_pattern? {
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_PyPegen_seq_insert_in_front(p, pattern, patterns) }
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maybe_sequence_pattern[asdl_seq*]:
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| patterns=','.maybe_star_pattern+ ','? { patterns }
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maybe_star_pattern[pattern_ty]:
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| star_pattern
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| pattern
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star_pattern[pattern_ty]:
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| '*' target=pattern_capture_target {
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_PyAST_MatchStar(target->v.Name.id, EXTRA) }
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| '*' wildcard_pattern {
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_PyAST_MatchStar(NULL, EXTRA) }
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mapping_pattern[pattern_ty]:
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| '{' '}' {
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_PyAST_MatchMapping(NULL, NULL, NULL, EXTRA) }
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| '{' rest=double_star_pattern ','? '}' {
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_PyAST_MatchMapping(NULL, NULL, rest->v.Name.id, EXTRA) }
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| '{' items=items_pattern ',' rest=double_star_pattern ','? '}' {
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_PyAST_MatchMapping(
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CHECK(asdl_expr_seq*, _PyPegen_get_pattern_keys(p, items)),
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CHECK(asdl_pattern_seq*, _PyPegen_get_patterns(p, items)),
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rest->v.Name.id,
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EXTRA) }
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| '{' items=items_pattern ','? '}' {
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_PyAST_MatchMapping(
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CHECK(asdl_expr_seq*, _PyPegen_get_pattern_keys(p, items)),
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CHECK(asdl_pattern_seq*, _PyPegen_get_patterns(p, items)),
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NULL,
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EXTRA) }
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items_pattern[asdl_seq*]:
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| ','.key_value_pattern+
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key_value_pattern[KeyPatternPair*]:
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| key=(literal_expr | attr) ':' pattern=pattern {
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_PyPegen_key_pattern_pair(p, key, pattern) }
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double_star_pattern[expr_ty]:
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| '**' target=pattern_capture_target { target }
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class_pattern[pattern_ty]:
|
|
| cls=name_or_attr '(' ')' {
|
|
_PyAST_MatchClass(cls, NULL, NULL, NULL, EXTRA) }
|
|
| cls=name_or_attr '(' patterns=positional_patterns ','? ')' {
|
|
_PyAST_MatchClass(cls, patterns, NULL, NULL, EXTRA) }
|
|
| cls=name_or_attr '(' keywords=keyword_patterns ','? ')' {
|
|
_PyAST_MatchClass(
|
|
cls, NULL,
|
|
CHECK(asdl_identifier_seq*, _PyPegen_map_names_to_ids(p,
|
|
CHECK(asdl_expr_seq*, _PyPegen_get_pattern_keys(p, keywords)))),
|
|
CHECK(asdl_pattern_seq*, _PyPegen_get_patterns(p, keywords)),
|
|
EXTRA) }
|
|
| cls=name_or_attr '(' patterns=positional_patterns ',' keywords=keyword_patterns ','? ')' {
|
|
_PyAST_MatchClass(
|
|
cls,
|
|
patterns,
|
|
CHECK(asdl_identifier_seq*, _PyPegen_map_names_to_ids(p,
|
|
CHECK(asdl_expr_seq*, _PyPegen_get_pattern_keys(p, keywords)))),
|
|
CHECK(asdl_pattern_seq*, _PyPegen_get_patterns(p, keywords)),
|
|
EXTRA) }
|
|
positional_patterns[asdl_pattern_seq*]:
|
|
| args[asdl_pattern_seq*]=','.pattern+ { args }
|
|
keyword_patterns[asdl_seq*]:
|
|
| ','.keyword_pattern+
|
|
keyword_pattern[KeyPatternPair*]:
|
|
| arg=NAME '=' value=pattern { _PyPegen_key_pattern_pair(p, arg, value) }
|
|
|
|
return_stmt[stmt_ty]:
|
|
| 'return' a=[star_expressions] { _PyAST_Return(a, EXTRA) }
|
|
|
|
raise_stmt[stmt_ty]:
|
|
| 'raise' a=expression b=['from' z=expression { z }] { _PyAST_Raise(a, b, EXTRA) }
|
|
| 'raise' { _PyAST_Raise(NULL, NULL, EXTRA) }
|
|
|
|
function_def[stmt_ty]:
|
|
| d=decorators f=function_def_raw { _PyPegen_function_def_decorators(p, d, f) }
|
|
| function_def_raw
|
|
|
|
function_def_raw[stmt_ty]:
|
|
| invalid_def_raw
|
|
| 'def' n=NAME '(' params=[params] ')' a=['->' z=expression { z }] &&':' tc=[func_type_comment] b=block {
|
|
_PyAST_FunctionDef(n->v.Name.id,
|
|
(params) ? params : CHECK(arguments_ty, _PyPegen_empty_arguments(p)),
|
|
b, NULL, a, NEW_TYPE_COMMENT(p, tc), EXTRA) }
|
|
| ASYNC 'def' n=NAME '(' params=[params] ')' a=['->' z=expression { z }] &&':' tc=[func_type_comment] b=block {
|
|
CHECK_VERSION(
|
|
stmt_ty,
|
|
5,
|
|
"Async functions are",
|
|
_PyAST_AsyncFunctionDef(n->v.Name.id,
|
|
(params) ? params : CHECK(arguments_ty, _PyPegen_empty_arguments(p)),
|
|
b, NULL, a, NEW_TYPE_COMMENT(p, tc), EXTRA)
|
|
) }
|
|
func_type_comment[Token*]:
|
|
| NEWLINE t=TYPE_COMMENT &(NEWLINE INDENT) { t } # Must be followed by indented block
|
|
| invalid_double_type_comments
|
|
| TYPE_COMMENT
|
|
|
|
params[arguments_ty]:
|
|
| invalid_parameters
|
|
| parameters
|
|
|
|
parameters[arguments_ty]:
|
|
| a=slash_no_default b[asdl_arg_seq*]=param_no_default* c=param_with_default* d=[star_etc] {
|
|
_PyPegen_make_arguments(p, a, NULL, b, c, d) }
|
|
| a=slash_with_default b=param_with_default* c=[star_etc] {
|
|
_PyPegen_make_arguments(p, NULL, a, NULL, b, c) }
|
|
| a[asdl_arg_seq*]=param_no_default+ b=param_with_default* c=[star_etc] {
|
|
_PyPegen_make_arguments(p, NULL, NULL, a, b, c) }
|
|
| a=param_with_default+ b=[star_etc] { _PyPegen_make_arguments(p, NULL, NULL, NULL, a, b)}
|
|
| a=star_etc { _PyPegen_make_arguments(p, NULL, NULL, NULL, NULL, a) }
|
|
|
|
# Some duplication here because we can't write (',' | &')'),
|
|
# which is because we don't support empty alternatives (yet).
|
|
#
|
|
slash_no_default[asdl_arg_seq*]:
|
|
| a[asdl_arg_seq*]=param_no_default+ '/' ',' { a }
|
|
| a[asdl_arg_seq*]=param_no_default+ '/' &')' { a }
|
|
slash_with_default[SlashWithDefault*]:
|
|
| a=param_no_default* b=param_with_default+ '/' ',' { _PyPegen_slash_with_default(p, (asdl_arg_seq *)a, b) }
|
|
| a=param_no_default* b=param_with_default+ '/' &')' { _PyPegen_slash_with_default(p, (asdl_arg_seq *)a, b) }
|
|
|
|
star_etc[StarEtc*]:
|
|
| '*' a=param_no_default b=param_maybe_default* c=[kwds] {
|
|
_PyPegen_star_etc(p, a, b, c) }
|
|
| '*' ',' b=param_maybe_default+ c=[kwds] {
|
|
_PyPegen_star_etc(p, NULL, b, c) }
|
|
| a=kwds { _PyPegen_star_etc(p, NULL, NULL, a) }
|
|
| invalid_star_etc
|
|
|
|
kwds[arg_ty]: '**' a=param_no_default { a }
|
|
|
|
# One parameter. This *includes* a following comma and type comment.
|
|
#
|
|
# There are three styles:
|
|
# - No default
|
|
# - With default
|
|
# - Maybe with default
|
|
#
|
|
# There are two alternative forms of each, to deal with type comments:
|
|
# - Ends in a comma followed by an optional type comment
|
|
# - No comma, optional type comment, must be followed by close paren
|
|
# The latter form is for a final parameter without trailing comma.
|
|
#
|
|
param_no_default[arg_ty]:
|
|
| a=param ',' tc=TYPE_COMMENT? { _PyPegen_add_type_comment_to_arg(p, a, tc) }
|
|
| a=param tc=TYPE_COMMENT? &')' { _PyPegen_add_type_comment_to_arg(p, a, tc) }
|
|
param_with_default[NameDefaultPair*]:
|
|
| a=param c=default ',' tc=TYPE_COMMENT? { _PyPegen_name_default_pair(p, a, c, tc) }
|
|
| a=param c=default tc=TYPE_COMMENT? &')' { _PyPegen_name_default_pair(p, a, c, tc) }
|
|
param_maybe_default[NameDefaultPair*]:
|
|
| a=param c=default? ',' tc=TYPE_COMMENT? { _PyPegen_name_default_pair(p, a, c, tc) }
|
|
| a=param c=default? tc=TYPE_COMMENT? &')' { _PyPegen_name_default_pair(p, a, c, tc) }
|
|
param[arg_ty]: a=NAME b=annotation? { _PyAST_arg(a->v.Name.id, b, NULL, EXTRA) }
|
|
|
|
annotation[expr_ty]: ':' a=expression { a }
|
|
default[expr_ty]: '=' a=expression { a }
|
|
|
|
decorators[asdl_expr_seq*]: a[asdl_expr_seq*]=('@' f=named_expression NEWLINE { f })+ { a }
|
|
|
|
class_def[stmt_ty]:
|
|
| a=decorators b=class_def_raw { _PyPegen_class_def_decorators(p, a, b) }
|
|
| class_def_raw
|
|
class_def_raw[stmt_ty]:
|
|
| invalid_class_def_raw
|
|
| 'class' a=NAME b=['(' z=[arguments] ')' { z }] &&':' c=block {
|
|
_PyAST_ClassDef(a->v.Name.id,
|
|
(b) ? ((expr_ty) b)->v.Call.args : NULL,
|
|
(b) ? ((expr_ty) b)->v.Call.keywords : NULL,
|
|
c, NULL, EXTRA) }
|
|
|
|
block[asdl_stmt_seq*] (memo):
|
|
| NEWLINE INDENT a=statements DEDENT { a }
|
|
| simple_stmts
|
|
| invalid_block
|
|
|
|
star_expressions[expr_ty]:
|
|
| a=star_expression b=(',' c=star_expression { c })+ [','] {
|
|
_PyAST_Tuple(CHECK(asdl_expr_seq*, _PyPegen_seq_insert_in_front(p, a, b)), Load, EXTRA) }
|
|
| a=star_expression ',' { _PyAST_Tuple(CHECK(asdl_expr_seq*, _PyPegen_singleton_seq(p, a)), Load, EXTRA) }
|
|
| star_expression
|
|
star_expression[expr_ty] (memo):
|
|
| '*' a=bitwise_or { _PyAST_Starred(a, Load, EXTRA) }
|
|
| expression
|
|
|
|
star_named_expressions[asdl_expr_seq*]: a[asdl_expr_seq*]=','.star_named_expression+ [','] { a }
|
|
star_named_expression[expr_ty]:
|
|
| '*' a=bitwise_or { _PyAST_Starred(a, Load, EXTRA) }
|
|
| named_expression
|
|
|
|
named_expression[expr_ty]:
|
|
| a=NAME ':=' ~ b=expression { _PyAST_NamedExpr(CHECK(expr_ty, _PyPegen_set_expr_context(p, a, Store)), b, EXTRA) }
|
|
| invalid_named_expression
|
|
| expression !':='
|
|
|
|
direct_named_expression[expr_ty]:
|
|
| a=NAME ':=' ~ b=expression { _PyAST_NamedExpr(CHECK(expr_ty, _PyPegen_set_expr_context(p, a, Store)), b, EXTRA) }
|
|
| expression !':='
|
|
|
|
annotated_rhs[expr_ty]: yield_expr | star_expressions
|
|
|
|
expressions[expr_ty]:
|
|
| a=expression b=(',' c=expression { c })+ [','] {
|
|
_PyAST_Tuple(CHECK(asdl_expr_seq*, _PyPegen_seq_insert_in_front(p, a, b)), Load, EXTRA) }
|
|
| a=expression ',' { _PyAST_Tuple(CHECK(asdl_expr_seq*, _PyPegen_singleton_seq(p, a)), Load, EXTRA) }
|
|
| expression
|
|
expression[expr_ty] (memo):
|
|
| invalid_expression
|
|
| a=disjunction 'if' b=disjunction 'else' c=expression { _PyAST_IfExp(b, a, c, EXTRA) }
|
|
| disjunction
|
|
| lambdef
|
|
|
|
lambdef[expr_ty]:
|
|
| 'lambda' a=[lambda_params] ':' b=expression {
|
|
_PyAST_Lambda((a) ? a : CHECK(arguments_ty, _PyPegen_empty_arguments(p)), b, EXTRA) }
|
|
|
|
lambda_params[arguments_ty]:
|
|
| invalid_lambda_parameters
|
|
| lambda_parameters
|
|
|
|
# lambda_parameters etc. duplicates parameters but without annotations
|
|
# or type comments, and if there's no comma after a parameter, we expect
|
|
# a colon, not a close parenthesis. (For more, see parameters above.)
|
|
#
|
|
lambda_parameters[arguments_ty]:
|
|
| a=lambda_slash_no_default b[asdl_arg_seq*]=lambda_param_no_default* c=lambda_param_with_default* d=[lambda_star_etc] {
|
|
_PyPegen_make_arguments(p, a, NULL, b, c, d) }
|
|
| a=lambda_slash_with_default b=lambda_param_with_default* c=[lambda_star_etc] {
|
|
_PyPegen_make_arguments(p, NULL, a, NULL, b, c) }
|
|
| a[asdl_arg_seq*]=lambda_param_no_default+ b=lambda_param_with_default* c=[lambda_star_etc] {
|
|
_PyPegen_make_arguments(p, NULL, NULL, a, b, c) }
|
|
| a=lambda_param_with_default+ b=[lambda_star_etc] { _PyPegen_make_arguments(p, NULL, NULL, NULL, a, b)}
|
|
| a=lambda_star_etc { _PyPegen_make_arguments(p, NULL, NULL, NULL, NULL, a) }
|
|
|
|
lambda_slash_no_default[asdl_arg_seq*]:
|
|
| a[asdl_arg_seq*]=lambda_param_no_default+ '/' ',' { a }
|
|
| a[asdl_arg_seq*]=lambda_param_no_default+ '/' &':' { a }
|
|
lambda_slash_with_default[SlashWithDefault*]:
|
|
| a=lambda_param_no_default* b=lambda_param_with_default+ '/' ',' { _PyPegen_slash_with_default(p, (asdl_arg_seq *)a, b) }
|
|
| a=lambda_param_no_default* b=lambda_param_with_default+ '/' &':' { _PyPegen_slash_with_default(p, (asdl_arg_seq *)a, b) }
|
|
|
|
lambda_star_etc[StarEtc*]:
|
|
| '*' a=lambda_param_no_default b=lambda_param_maybe_default* c=[lambda_kwds] {
|
|
_PyPegen_star_etc(p, a, b, c) }
|
|
| '*' ',' b=lambda_param_maybe_default+ c=[lambda_kwds] {
|
|
_PyPegen_star_etc(p, NULL, b, c) }
|
|
| a=lambda_kwds { _PyPegen_star_etc(p, NULL, NULL, a) }
|
|
| invalid_lambda_star_etc
|
|
|
|
lambda_kwds[arg_ty]: '**' a=lambda_param_no_default { a }
|
|
|
|
lambda_param_no_default[arg_ty]:
|
|
| a=lambda_param ',' { a }
|
|
| a=lambda_param &':' { a }
|
|
lambda_param_with_default[NameDefaultPair*]:
|
|
| a=lambda_param c=default ',' { _PyPegen_name_default_pair(p, a, c, NULL) }
|
|
| a=lambda_param c=default &':' { _PyPegen_name_default_pair(p, a, c, NULL) }
|
|
lambda_param_maybe_default[NameDefaultPair*]:
|
|
| a=lambda_param c=default? ',' { _PyPegen_name_default_pair(p, a, c, NULL) }
|
|
| a=lambda_param c=default? &':' { _PyPegen_name_default_pair(p, a, c, NULL) }
|
|
lambda_param[arg_ty]: a=NAME { _PyAST_arg(a->v.Name.id, NULL, NULL, EXTRA) }
|
|
|
|
disjunction[expr_ty] (memo):
|
|
| a=conjunction b=('or' c=conjunction { c })+ { _PyAST_BoolOp(
|
|
Or,
|
|
CHECK(asdl_expr_seq*, _PyPegen_seq_insert_in_front(p, a, b)),
|
|
EXTRA) }
|
|
| conjunction
|
|
conjunction[expr_ty] (memo):
|
|
| a=inversion b=('and' c=inversion { c })+ { _PyAST_BoolOp(
|
|
And,
|
|
CHECK(asdl_expr_seq*, _PyPegen_seq_insert_in_front(p, a, b)),
|
|
EXTRA) }
|
|
| inversion
|
|
inversion[expr_ty] (memo):
|
|
| 'not' a=inversion { _PyAST_UnaryOp(Not, a, EXTRA) }
|
|
| comparison
|
|
comparison[expr_ty]:
|
|
| a=bitwise_or b=compare_op_bitwise_or_pair+ {
|
|
_PyAST_Compare(
|
|
a,
|
|
CHECK(asdl_int_seq*, _PyPegen_get_cmpops(p, b)),
|
|
CHECK(asdl_expr_seq*, _PyPegen_get_exprs(p, b)),
|
|
EXTRA) }
|
|
| bitwise_or
|
|
compare_op_bitwise_or_pair[CmpopExprPair*]:
|
|
| eq_bitwise_or
|
|
| noteq_bitwise_or
|
|
| lte_bitwise_or
|
|
| lt_bitwise_or
|
|
| gte_bitwise_or
|
|
| gt_bitwise_or
|
|
| notin_bitwise_or
|
|
| in_bitwise_or
|
|
| isnot_bitwise_or
|
|
| is_bitwise_or
|
|
eq_bitwise_or[CmpopExprPair*]: '==' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, Eq, a) }
|
|
noteq_bitwise_or[CmpopExprPair*]:
|
|
| (tok='!=' { _PyPegen_check_barry_as_flufl(p, tok) ? NULL : tok}) a=bitwise_or {_PyPegen_cmpop_expr_pair(p, NotEq, a) }
|
|
lte_bitwise_or[CmpopExprPair*]: '<=' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, LtE, a) }
|
|
lt_bitwise_or[CmpopExprPair*]: '<' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, Lt, a) }
|
|
gte_bitwise_or[CmpopExprPair*]: '>=' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, GtE, a) }
|
|
gt_bitwise_or[CmpopExprPair*]: '>' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, Gt, a) }
|
|
notin_bitwise_or[CmpopExprPair*]: 'not' 'in' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, NotIn, a) }
|
|
in_bitwise_or[CmpopExprPair*]: 'in' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, In, a) }
|
|
isnot_bitwise_or[CmpopExprPair*]: 'is' 'not' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, IsNot, a) }
|
|
is_bitwise_or[CmpopExprPair*]: 'is' a=bitwise_or { _PyPegen_cmpop_expr_pair(p, Is, a) }
|
|
|
|
bitwise_or[expr_ty]:
|
|
| a=bitwise_or '|' b=bitwise_xor { _PyAST_BinOp(a, BitOr, b, EXTRA) }
|
|
| bitwise_xor
|
|
bitwise_xor[expr_ty]:
|
|
| a=bitwise_xor '^' b=bitwise_and { _PyAST_BinOp(a, BitXor, b, EXTRA) }
|
|
| bitwise_and
|
|
bitwise_and[expr_ty]:
|
|
| a=bitwise_and '&' b=shift_expr { _PyAST_BinOp(a, BitAnd, b, EXTRA) }
|
|
| shift_expr
|
|
shift_expr[expr_ty]:
|
|
| a=shift_expr '<<' b=sum { _PyAST_BinOp(a, LShift, b, EXTRA) }
|
|
| a=shift_expr '>>' b=sum { _PyAST_BinOp(a, RShift, b, EXTRA) }
|
|
| sum
|
|
|
|
sum[expr_ty]:
|
|
| a=sum '+' b=term { _PyAST_BinOp(a, Add, b, EXTRA) }
|
|
| a=sum '-' b=term { _PyAST_BinOp(a, Sub, b, EXTRA) }
|
|
| term
|
|
term[expr_ty]:
|
|
| a=term '*' b=factor { _PyAST_BinOp(a, Mult, b, EXTRA) }
|
|
| a=term '/' b=factor { _PyAST_BinOp(a, Div, b, EXTRA) }
|
|
| a=term '//' b=factor { _PyAST_BinOp(a, FloorDiv, b, EXTRA) }
|
|
| a=term '%' b=factor { _PyAST_BinOp(a, Mod, b, EXTRA) }
|
|
| a=term '@' b=factor { CHECK_VERSION(expr_ty, 5, "The '@' operator is", _PyAST_BinOp(a, MatMult, b, EXTRA)) }
|
|
| factor
|
|
factor[expr_ty] (memo):
|
|
| '+' a=factor { _PyAST_UnaryOp(UAdd, a, EXTRA) }
|
|
| '-' a=factor { _PyAST_UnaryOp(USub, a, EXTRA) }
|
|
| '~' a=factor { _PyAST_UnaryOp(Invert, a, EXTRA) }
|
|
| power
|
|
power[expr_ty]:
|
|
| a=await_primary '**' b=factor { _PyAST_BinOp(a, Pow, b, EXTRA) }
|
|
| await_primary
|
|
await_primary[expr_ty] (memo):
|
|
| AWAIT a=primary { CHECK_VERSION(expr_ty, 5, "Await expressions are", _PyAST_Await(a, EXTRA)) }
|
|
| primary
|
|
primary[expr_ty]:
|
|
| invalid_primary # must be before 'primay genexp' because of invalid_genexp
|
|
| a=primary '.' b=NAME { _PyAST_Attribute(a, b->v.Name.id, Load, EXTRA) }
|
|
| a=primary b=genexp { _PyAST_Call(a, CHECK(asdl_expr_seq*, (asdl_expr_seq*)_PyPegen_singleton_seq(p, b)), NULL, EXTRA) }
|
|
| a=primary '(' b=[arguments] ')' {
|
|
_PyAST_Call(a,
|
|
(b) ? ((expr_ty) b)->v.Call.args : NULL,
|
|
(b) ? ((expr_ty) b)->v.Call.keywords : NULL,
|
|
EXTRA) }
|
|
| a=primary '[' b=slices ']' { _PyAST_Subscript(a, b, Load, EXTRA) }
|
|
| atom
|
|
|
|
slices[expr_ty]:
|
|
| a=slice !',' { a }
|
|
| a[asdl_expr_seq*]=','.slice+ [','] { _PyAST_Tuple(a, Load, EXTRA) }
|
|
slice[expr_ty]:
|
|
| a=[expression] ':' b=[expression] c=[':' d=[expression] { d }] { _PyAST_Slice(a, b, c, EXTRA) }
|
|
| a=named_expression { a }
|
|
atom[expr_ty]:
|
|
| NAME
|
|
| 'True' { _PyAST_Constant(Py_True, NULL, EXTRA) }
|
|
| 'False' { _PyAST_Constant(Py_False, NULL, EXTRA) }
|
|
| 'None' { _PyAST_Constant(Py_None, NULL, EXTRA) }
|
|
| &STRING strings
|
|
| NUMBER
|
|
| &'(' (tuple | group | genexp)
|
|
| &'[' (list | listcomp)
|
|
| &'{' (dict | set | dictcomp | setcomp)
|
|
| '...' { _PyAST_Constant(Py_Ellipsis, NULL, EXTRA) }
|
|
|
|
strings[expr_ty] (memo): a=STRING+ { _PyPegen_concatenate_strings(p, a) }
|
|
list[expr_ty]:
|
|
| '[' a=[star_named_expressions] ']' { _PyAST_List(a, Load, EXTRA) }
|
|
listcomp[expr_ty]:
|
|
| '[' a=named_expression b=for_if_clauses ']' { _PyAST_ListComp(a, b, EXTRA) }
|
|
| invalid_comprehension
|
|
tuple[expr_ty]:
|
|
| '(' a=[y=star_named_expression ',' z=[star_named_expressions] { _PyPegen_seq_insert_in_front(p, y, z) } ] ')' {
|
|
_PyAST_Tuple(a, Load, EXTRA) }
|
|
group[expr_ty]:
|
|
| '(' a=(yield_expr | named_expression) ')' { a }
|
|
| invalid_group
|
|
genexp[expr_ty]:
|
|
| '(' a=direct_named_expression b=for_if_clauses ')' { _PyAST_GeneratorExp(a, b, EXTRA) }
|
|
| invalid_comprehension
|
|
set[expr_ty]: '{' a=star_named_expressions '}' { _PyAST_Set(a, EXTRA) }
|
|
setcomp[expr_ty]:
|
|
| '{' a=named_expression b=for_if_clauses '}' { _PyAST_SetComp(a, b, EXTRA) }
|
|
| invalid_comprehension
|
|
dict[expr_ty]:
|
|
| '{' a=[double_starred_kvpairs] '}' {
|
|
_PyAST_Dict(
|
|
CHECK(asdl_expr_seq*, _PyPegen_get_keys(p, a)),
|
|
CHECK(asdl_expr_seq*, _PyPegen_get_values(p, a)),
|
|
EXTRA) }
|
|
| '{' invalid_double_starred_kvpairs '}'
|
|
|
|
dictcomp[expr_ty]:
|
|
| '{' a=kvpair b=for_if_clauses '}' { _PyAST_DictComp(a->key, a->value, b, EXTRA) }
|
|
| invalid_dict_comprehension
|
|
double_starred_kvpairs[asdl_seq*]: a=','.double_starred_kvpair+ [','] { a }
|
|
double_starred_kvpair[KeyValuePair*]:
|
|
| '**' a=bitwise_or { _PyPegen_key_value_pair(p, NULL, a) }
|
|
| kvpair
|
|
kvpair[KeyValuePair*]: a=expression ':' b=expression { _PyPegen_key_value_pair(p, a, b) }
|
|
for_if_clauses[asdl_comprehension_seq*]:
|
|
| a[asdl_comprehension_seq*]=for_if_clause+ { a }
|
|
for_if_clause[comprehension_ty]:
|
|
| ASYNC 'for' a=star_targets 'in' ~ b=disjunction c[asdl_expr_seq*]=('if' z=disjunction { z })* {
|
|
CHECK_VERSION(comprehension_ty, 6, "Async comprehensions are", _PyAST_comprehension(a, b, c, 1, p->arena)) }
|
|
| 'for' a=star_targets 'in' ~ b=disjunction c[asdl_expr_seq*]=('if' z=disjunction { z })* {
|
|
_PyAST_comprehension(a, b, c, 0, p->arena) }
|
|
| invalid_for_target
|
|
|
|
yield_expr[expr_ty]:
|
|
| 'yield' 'from' a=expression { _PyAST_YieldFrom(a, EXTRA) }
|
|
| 'yield' a=[star_expressions] { _PyAST_Yield(a, EXTRA) }
|
|
|
|
arguments[expr_ty] (memo):
|
|
| a=args [','] &')' { a }
|
|
| invalid_arguments
|
|
args[expr_ty]:
|
|
| a[asdl_expr_seq*]=','.(starred_expression | direct_named_expression !'=')+ b=[',' k=kwargs {k}] { _PyPegen_collect_call_seqs(p, a, b, EXTRA) }
|
|
| a=kwargs { _PyAST_Call(_PyPegen_dummy_name(p),
|
|
CHECK_NULL_ALLOWED(asdl_expr_seq*, _PyPegen_seq_extract_starred_exprs(p, a)),
|
|
CHECK_NULL_ALLOWED(asdl_keyword_seq*, _PyPegen_seq_delete_starred_exprs(p, a)),
|
|
EXTRA) }
|
|
kwargs[asdl_seq*]:
|
|
| a=','.kwarg_or_starred+ ',' b=','.kwarg_or_double_starred+ { _PyPegen_join_sequences(p, a, b) }
|
|
| ','.kwarg_or_starred+
|
|
| ','.kwarg_or_double_starred+
|
|
starred_expression[expr_ty]:
|
|
| '*' a=expression { _PyAST_Starred(a, Load, EXTRA) }
|
|
kwarg_or_starred[KeywordOrStarred*]:
|
|
| a=NAME '=' b=expression {
|
|
_PyPegen_keyword_or_starred(p, CHECK(keyword_ty, _PyAST_keyword(a->v.Name.id, b, EXTRA)), 1) }
|
|
| a=starred_expression { _PyPegen_keyword_or_starred(p, a, 0) }
|
|
| invalid_kwarg
|
|
kwarg_or_double_starred[KeywordOrStarred*]:
|
|
| a=NAME '=' b=expression {
|
|
_PyPegen_keyword_or_starred(p, CHECK(keyword_ty, _PyAST_keyword(a->v.Name.id, b, EXTRA)), 1) }
|
|
| '**' a=expression { _PyPegen_keyword_or_starred(p, CHECK(keyword_ty, _PyAST_keyword(NULL, a, EXTRA)), 1) }
|
|
| invalid_kwarg
|
|
|
|
# NOTE: star_targets may contain *bitwise_or, targets may not.
|
|
star_targets[expr_ty]:
|
|
| a=star_target !',' { a }
|
|
| a=star_target b=(',' c=star_target { c })* [','] {
|
|
_PyAST_Tuple(CHECK(asdl_expr_seq*, _PyPegen_seq_insert_in_front(p, a, b)), Store, EXTRA) }
|
|
star_targets_list_seq[asdl_expr_seq*]: a[asdl_expr_seq*]=','.star_target+ [','] { a }
|
|
star_targets_tuple_seq[asdl_expr_seq*]:
|
|
| a=star_target b=(',' c=star_target { c })+ [','] { (asdl_expr_seq*) _PyPegen_seq_insert_in_front(p, a, b) }
|
|
| a=star_target ',' { (asdl_expr_seq*) _PyPegen_singleton_seq(p, a) }
|
|
star_target[expr_ty] (memo):
|
|
| '*' a=(!'*' star_target) {
|
|
_PyAST_Starred(CHECK(expr_ty, _PyPegen_set_expr_context(p, a, Store)), Store, EXTRA) }
|
|
| target_with_star_atom
|
|
target_with_star_atom[expr_ty] (memo):
|
|
| a=t_primary '.' b=NAME !t_lookahead { _PyAST_Attribute(a, b->v.Name.id, Store, EXTRA) }
|
|
| a=t_primary '[' b=slices ']' !t_lookahead { _PyAST_Subscript(a, b, Store, EXTRA) }
|
|
| star_atom
|
|
star_atom[expr_ty]:
|
|
| a=NAME { _PyPegen_set_expr_context(p, a, Store) }
|
|
| '(' a=target_with_star_atom ')' { _PyPegen_set_expr_context(p, a, Store) }
|
|
| '(' a=[star_targets_tuple_seq] ')' { _PyAST_Tuple(a, Store, EXTRA) }
|
|
| '[' a=[star_targets_list_seq] ']' { _PyAST_List(a, Store, EXTRA) }
|
|
|
|
single_target[expr_ty]:
|
|
| single_subscript_attribute_target
|
|
| a=NAME { _PyPegen_set_expr_context(p, a, Store) }
|
|
| '(' a=single_target ')' { a }
|
|
single_subscript_attribute_target[expr_ty]:
|
|
| a=t_primary '.' b=NAME !t_lookahead { _PyAST_Attribute(a, b->v.Name.id, Store, EXTRA) }
|
|
| a=t_primary '[' b=slices ']' !t_lookahead { _PyAST_Subscript(a, b, Store, EXTRA) }
|
|
|
|
del_targets[asdl_expr_seq*]: a[asdl_expr_seq*]=','.del_target+ [','] { a }
|
|
del_target[expr_ty] (memo):
|
|
| a=t_primary '.' b=NAME !t_lookahead { _PyAST_Attribute(a, b->v.Name.id, Del, EXTRA) }
|
|
| a=t_primary '[' b=slices ']' !t_lookahead { _PyAST_Subscript(a, b, Del, EXTRA) }
|
|
| del_t_atom
|
|
del_t_atom[expr_ty]:
|
|
| a=NAME { _PyPegen_set_expr_context(p, a, Del) }
|
|
| '(' a=del_target ')' { _PyPegen_set_expr_context(p, a, Del) }
|
|
| '(' a=[del_targets] ')' { _PyAST_Tuple(a, Del, EXTRA) }
|
|
| '[' a=[del_targets] ']' { _PyAST_List(a, Del, EXTRA) }
|
|
|
|
targets[asdl_expr_seq*]: a[asdl_expr_seq*]=','.target+ [','] { a }
|
|
target[expr_ty] (memo):
|
|
| a=t_primary '.' b=NAME !t_lookahead { _PyAST_Attribute(a, b->v.Name.id, Store, EXTRA) }
|
|
| a=t_primary '[' b=slices ']' !t_lookahead { _PyAST_Subscript(a, b, Store, EXTRA) }
|
|
| t_atom
|
|
t_primary[expr_ty]:
|
|
| a=t_primary '.' b=NAME &t_lookahead { _PyAST_Attribute(a, b->v.Name.id, Load, EXTRA) }
|
|
| a=t_primary '[' b=slices ']' &t_lookahead { _PyAST_Subscript(a, b, Load, EXTRA) }
|
|
| a=t_primary b=genexp &t_lookahead {
|
|
_PyAST_Call(a, CHECK(asdl_expr_seq*, (asdl_expr_seq*)_PyPegen_singleton_seq(p, b)), NULL, EXTRA) }
|
|
| a=t_primary '(' b=[arguments] ')' &t_lookahead {
|
|
_PyAST_Call(a,
|
|
(b) ? ((expr_ty) b)->v.Call.args : NULL,
|
|
(b) ? ((expr_ty) b)->v.Call.keywords : NULL,
|
|
EXTRA) }
|
|
| a=atom &t_lookahead { a }
|
|
t_lookahead: '(' | '[' | '.'
|
|
t_atom[expr_ty]:
|
|
| a=NAME { _PyPegen_set_expr_context(p, a, Store) }
|
|
| '(' a=target ')' { _PyPegen_set_expr_context(p, a, Store) }
|
|
| '(' b=[targets] ')' { _PyAST_Tuple(b, Store, EXTRA) }
|
|
| '[' b=[targets] ']' { _PyAST_List(b, Store, EXTRA) }
|
|
|
|
|
|
# From here on, there are rules for invalid syntax with specialised error messages
|
|
invalid_arguments:
|
|
| a=args ',' '*' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "iterable argument unpacking follows keyword argument unpacking") }
|
|
| a=expression b=for_if_clauses ',' [args | expression for_if_clauses] {
|
|
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, PyPegen_last_item(b, comprehension_ty)->target, "Generator expression must be parenthesized") }
|
|
| a=args for_if_clauses { _PyPegen_nonparen_genexp_in_call(p, a) }
|
|
| args ',' a=expression b=for_if_clauses {
|
|
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, asdl_seq_GET(b, b->size-1)->target, "Generator expression must be parenthesized") }
|
|
| a=args ',' args { _PyPegen_arguments_parsing_error(p, a) }
|
|
invalid_kwarg:
|
|
| !(NAME '=') a=expression b='=' {
|
|
RAISE_SYNTAX_ERROR_KNOWN_RANGE(
|
|
a, b, "expression cannot contain assignment, perhaps you meant \"==\"?") }
|
|
|
|
invalid_expression:
|
|
# !(NAME STRING) is not matched so we don't show this error with some invalid string prefixes like: kf"dsfsdf"
|
|
# Soft keywords need to also be ignored because they can be parsed as NAME NAME
|
|
| !(NAME STRING | SOFT_KEYWORD) a=disjunction b=expression {
|
|
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "invalid syntax. Perhaps you forgot a comma?") }
|
|
|
|
invalid_named_expression:
|
|
| a=expression ':=' expression {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(
|
|
a, "cannot use assignment expressions with %s", _PyPegen_get_expr_name(a)) }
|
|
| a=NAME '=' b=bitwise_or !('='|':='|',') {
|
|
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "invalid syntax. Maybe you meant '==' or ':=' instead of '='?") }
|
|
| !(list|tuple|genexp|'True'|'None'|'False') a=bitwise_or b='=' bitwise_or !('='|':='|',') {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "cannot assign to %s here. Maybe you meant '==' instead of '='?",
|
|
_PyPegen_get_expr_name(a)) }
|
|
|
|
invalid_assignment:
|
|
| a=invalid_ann_assign_target ':' expression {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(
|
|
a,
|
|
"only single target (not %s) can be annotated",
|
|
_PyPegen_get_expr_name(a)
|
|
)}
|
|
| a=star_named_expression ',' star_named_expressions* ':' expression {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "only single target (not tuple) can be annotated") }
|
|
| a=expression ':' expression {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "illegal target for annotation") }
|
|
| (star_targets '=')* a=star_expressions '=' {
|
|
RAISE_SYNTAX_ERROR_INVALID_TARGET(STAR_TARGETS, a) }
|
|
| (star_targets '=')* a=yield_expr '=' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "assignment to yield expression not possible") }
|
|
| a=star_expressions augassign (yield_expr | star_expressions) {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(
|
|
a,
|
|
"'%s' is an illegal expression for augmented assignment",
|
|
_PyPegen_get_expr_name(a)
|
|
)}
|
|
invalid_ann_assign_target[expr_ty]:
|
|
| list
|
|
| tuple
|
|
| '(' a=invalid_ann_assign_target ')' { a }
|
|
invalid_del_stmt:
|
|
| 'del' a=star_expressions {
|
|
RAISE_SYNTAX_ERROR_INVALID_TARGET(DEL_TARGETS, a) }
|
|
invalid_block:
|
|
| NEWLINE !INDENT { RAISE_INDENTATION_ERROR("expected an indented block") }
|
|
invalid_primary:
|
|
| primary a='{' { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "invalid syntax") }
|
|
invalid_comprehension:
|
|
| ('[' | '(' | '{') a=starred_expression for_if_clauses {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "iterable unpacking cannot be used in comprehension") }
|
|
| ('[' | '{') a=star_named_expression ',' b=star_named_expressions for_if_clauses {
|
|
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, PyPegen_last_item(b, expr_ty),
|
|
"did you forget parentheses around the comprehension target?") }
|
|
| ('[' | '{') a=star_named_expression b=',' for_if_clauses {
|
|
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "did you forget parentheses around the comprehension target?") }
|
|
invalid_dict_comprehension:
|
|
| '{' a='**' bitwise_or for_if_clauses '}' {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "dict unpacking cannot be used in dict comprehension") }
|
|
invalid_parameters:
|
|
| param_no_default* invalid_parameters_helper a=param_no_default {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "non-default argument follows default argument") }
|
|
invalid_parameters_helper: # This is only there to avoid type errors
|
|
| a=slash_with_default { _PyPegen_singleton_seq(p, a) }
|
|
| param_with_default+
|
|
invalid_lambda_parameters:
|
|
| lambda_param_no_default* invalid_lambda_parameters_helper a=lambda_param_no_default {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "non-default argument follows default argument") }
|
|
invalid_lambda_parameters_helper:
|
|
| a=lambda_slash_with_default { _PyPegen_singleton_seq(p, a) }
|
|
| lambda_param_with_default+
|
|
invalid_star_etc:
|
|
| a='*' (')' | ',' (')' | '**')) { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "named arguments must follow bare *") }
|
|
| '*' ',' TYPE_COMMENT { RAISE_SYNTAX_ERROR("bare * has associated type comment") }
|
|
invalid_lambda_star_etc:
|
|
| '*' (':' | ',' (':' | '**')) { RAISE_SYNTAX_ERROR("named arguments must follow bare *") }
|
|
invalid_double_type_comments:
|
|
| TYPE_COMMENT NEWLINE TYPE_COMMENT NEWLINE INDENT {
|
|
RAISE_SYNTAX_ERROR("Cannot have two type comments on def") }
|
|
invalid_with_item:
|
|
| expression 'as' a=expression &(',' | ')' | ':') {
|
|
RAISE_SYNTAX_ERROR_INVALID_TARGET(STAR_TARGETS, a) }
|
|
|
|
invalid_for_target:
|
|
| ASYNC? 'for' a=star_expressions {
|
|
RAISE_SYNTAX_ERROR_INVALID_TARGET(FOR_TARGETS, a) }
|
|
|
|
invalid_group:
|
|
| '(' a=starred_expression ')' {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "cannot use starred expression here") }
|
|
| '(' a='**' expression ')' {
|
|
RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "cannot use double starred expression here") }
|
|
invalid_import_from_targets:
|
|
| import_from_as_names ',' {
|
|
RAISE_SYNTAX_ERROR("trailing comma not allowed without surrounding parentheses") }
|
|
|
|
invalid_with_stmt:
|
|
| [ASYNC] 'with' ','.(expression ['as' star_target])+ &&':'
|
|
| [ASYNC] 'with' '(' ','.(expressions ['as' star_target])+ ','? ')' &&':'
|
|
invalid_with_stmt_indent:
|
|
| [ASYNC] a='with' ','.(expression ['as' star_target])+ ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'with' statement on line %d", a->lineno) }
|
|
| [ASYNC] a='with' '(' ','.(expressions ['as' star_target])+ ','? ')' ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'with' statement on line %d", a->lineno) }
|
|
|
|
invalid_try_stmt:
|
|
| a='try' ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'try' statement on line %d", a->lineno) }
|
|
invalid_except_stmt:
|
|
| 'except' a=expression ',' expressions ['as' NAME ] ':' {
|
|
RAISE_SYNTAX_ERROR_STARTING_FROM(a, "multiple exception types must be parenthesized") }
|
|
| a='except' expression ['as' NAME ] NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
|
|
| a='except' NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
|
|
invalid_finally_stmt:
|
|
| a='finally' ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'finally' statement on line %d", a->lineno) }
|
|
invalid_except_stmt_indent:
|
|
| a='except' expression ['as' NAME ] ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'except' statement on line %d", a->lineno) }
|
|
| a='except' ':' NEWLINE !INDENT { RAISE_SYNTAX_ERROR("expected an indented block after except statement on line %d", a->lineno) }
|
|
invalid_match_stmt:
|
|
| "match" subject_expr !':' { CHECK_VERSION(void*, 10, "Pattern matching is", RAISE_SYNTAX_ERROR("expected ':'") ) }
|
|
| a="match" subject=subject_expr ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'match' statement on line %d", a->lineno) }
|
|
invalid_case_block:
|
|
| "case" patterns guard? !':' { RAISE_SYNTAX_ERROR("expected ':'") }
|
|
| a="case" patterns guard? ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'case' statement on line %d", a->lineno) }
|
|
invalid_if_stmt:
|
|
| 'if' named_expression NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
|
|
| a='if' a=named_expression ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'if' statement on line %d", a->lineno) }
|
|
invalid_elif_stmt:
|
|
| 'elif' named_expression NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
|
|
| a='elif' named_expression ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'elif' statement on line %d", a->lineno) }
|
|
invalid_else_stmt:
|
|
| a='else' ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'else' statement on line %d", a->lineno) }
|
|
invalid_while_stmt:
|
|
| 'while' named_expression NEWLINE { RAISE_SYNTAX_ERROR("expected ':'") }
|
|
| a='while' named_expression ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'while' statement on line %d", a->lineno) }
|
|
invalid_for_stmt:
|
|
| [ASYNC] a='for' star_targets 'in' star_expressions ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after 'for' statement on line %d", a->lineno) }
|
|
invalid_def_raw:
|
|
| [ASYNC] a='def' NAME '(' [params] ')' ['->' expression] ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after function definition on line %d", a->lineno) }
|
|
invalid_class_def_raw:
|
|
| a='class' NAME ['('[arguments] ')'] ':' NEWLINE !INDENT {
|
|
RAISE_INDENTATION_ERROR("expected an indented block after class definition on line %d", a->lineno) }
|
|
|
|
invalid_double_starred_kvpairs:
|
|
| ','.double_starred_kvpair+ ',' invalid_kvpair
|
|
| expression ':' a='*' bitwise_or { RAISE_SYNTAX_ERROR_STARTING_FROM(a, "cannot use a starred expression in a dictionary value") }
|
|
| expression a=':' &('}'|',') { RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "expression expected after dictionary key and ':'") }
|
|
invalid_kvpair:
|
|
| a=expression !(':') {
|
|
RAISE_ERROR_KNOWN_LOCATION(p, PyExc_SyntaxError, a->lineno, a->end_col_offset - 1, a->end_lineno, -1, "':' expected after dictionary key") }
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| expression ':' a='*' bitwise_or { RAISE_SYNTAX_ERROR_STARTING_FROM(a, "cannot use a starred expression in a dictionary value") }
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| expression a=':' {RAISE_SYNTAX_ERROR_KNOWN_LOCATION(a, "expression expected after dictionary key and ':'") }
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