Parsing 关于这个移位/减少错误，讽刺意味着什么？

我正在使用下面描述的语法为PowerShell语言编写解析器：

我使用了Irony，Irony语法浏览器报告了一些shift/reduce和reduce/reduce错误。这件事让我很困惑，因为我不知道它告诉了我什么

State S79 (Inadequate) Shift-reduce conflicts on inputs: [ , + dash ++ dashdash Shift items: cast_expression -> type_literal ·unary_expression unary_expression -> ·primary_expression primary_expression -> ·value value -> ·parenthesized_expression parenthesized_expression -> ·( pipeline ) value -> ·sub_expression sub_expression -> ·$( statement_list_opt ) value -> ·array_expression array_expression -> ·@( statement_list_opt ) value -> ·script_block_expression script_block_expression -> ·{ script_block } value -> ·hash_literal_expression hash_literal_expression -> ·@{ hash_literal_body_opt } value -> ·literal literal -> ·integer_literal integer_literal -> ·decimal_integer_literal integer_literal -> ·hexadecimal_integer_literal literal -> ·real_literal literal -> ·string_literal string_literal -> ·expandable_string_literal string_literal -> ·verbatim_string_literal value -> ·type_literal type_literal -> ·[ type_spec ] value -> ·variable primary_expression -> ·member_access member_access -> ·primary_expression Unnamed6 member_name primary_expression -> ·element_access element_access -> ·primary_expression [ expression ] primary_expression -> ·post_increment_expression post_increment_expression -> ·primary_expression ++ primary_expression -> ·post_decrement_expression post_decrement_expression -> ·primary_expression dashdash unary_expression -> ·expression_with_unary_operator expression_with_unary_operator -> ·, unary_expression expression_with_unary_operator -> ·-not unary_expression expression_with_unary_operator -> ·! unary_expression expression_with_unary_operator -> ·-bnot unary_expression expression_with_unary_operator -> ·+ unary_expression expression_with_unary_operator -> ·dash unary_expression expression_with_unary_operator -> ·pre_increment_expression pre_increment_expression -> ·++ unary_expression expression_with_unary_operator -> ·pre_decrement_expression pre_decrement_expression -> ·dashdash unary_expression expression_with_unary_operator -> ·cast_expression cast_expression -> ·type_literal unary_expression expression_with_unary_operator -> ·-split unary_expression expression_with_unary_operator -> ·-join unary_expression Reduce items: value -> type_literal · [assignment_operator . :: [ ++ dashdash , .. format_operator * / % + dash as ccontains ceq cge cgt cle clike clt cmatch cne cnotcontains cnotlike cnotmatch contains creplace csplit eq ge gt icontains ieq ige igt ile ilike ilt imatch ine inotcontains inotlike inotmatch ireplace is isnot isplit join le like lt match ne notcontains notlike notmatch replace split -band -bor -bxor -and -or -xor 2>&1 1>&2 file_redirection_operator | ; new_line_character EOF } ) = ]] Transitions: unary_expression->S187, primary_expression->S158, value->S60, parenthesized_expression->S61, (->S62, sub_expression->S63, $(->S64, array_expression->S65, @(->S66, script_block_expression->S67, {->S68, hash_literal_expression->S69, @{->S70, literal->S71, integer_literal->S72, decimal_integer_literal->S73, hexadecimal_integer_literal->S74, real_literal->S75, string_literal->S76, expandable_string_literal->S77, verbatim_string_literal->S78, type_literal->S79, [->S80, variable->S81, member_access->S82, element_access->S83, post_increment_expression->S84, post_decrement_expression->S85, expression_with_unary_operator->S97, ,->S98, -not->S99, !->S100, -bnot->S101, +->S102, dash->S103, pre_increment_expression->S104, ++->S105, pre_decrement_expression->S106, dashdash->S107, cast_expression->S108, -split->S109, -join->S110

---

这是添加还是铸造

这是交叉发布的，但我认为这是一个更好的地方。github链接被破坏了。回购不见了？@Charles:谢谢你的关注-我刚移动了回购，忘了更新我的问题。固定的另外：我同意罗曼的观点；你应该考虑通过减少过多的终端来修改语法定义，用解析器解析，用扫描仪扫描。谢谢你的建议，彼得。因为语法是由微软出版的，所以我希望能按原样使用它，但我想我还有一些工作要做。

[int] +7