1、概要
前三篇博文（0，1，2）主要讨论是声明和定义的相关语法归约。从这篇文字开始，将开始进行有效的计算，涉及表达式和语句。
首先，表达式和语句这两个概念是不同的，表达式是没有分号(;)的，而表达式+；构成语句。但这不是语句的全部，语句还可以是跳转，迭代，标签语句等等（见图片C语句文法图）！打个比喻来说吧——就是蛋和鸡的关系！当然不是那个悖论，而是表达式是蛋，孵化是分号，鸡是语句。蛋孵化成鸡。鸡肚子里可以有蛋！嘎嘎！二者区别必须明白。不能混为一谈！
在C语言中，如果单纯就表达式计算而言，表达式就是一个人，而分号；好似一张毕业证，有它你就是正规的劳动人员，哪怕你什么都不干什么都不会（比如单个分号；）而没它，你就是没户口的黑孩，不能参与计算劳动，编译器抱怨的不得了，就是不让你上岗运行！
其次，说到表达式，运算符的优先级问题就不得不提一提了。C中的优先级是由表达式文法决定的！当初学C的时候都是死记硬背的，那时候觉得这个优先级是C它爹里奇严格要求，每次运算的时候都要检测后面的优先级，看它是不是比当前运算符优先级高。而且一直觉得编译器也是这样做的。而事实上不是，广义上讲是严格要求，因为它已经写入了文法，归约顺序是固定的，就像法律条文一样，是严格约束的；但是从狭义上而论。这个优先级是很自然的事情，不需要摇头晃脑的背，也不用比较优先级高低来实现，而是语法归约过程很自然的东西。一级一级的归约，一级一级的蹦哒，到了哪个阶段，那个阶段归约，优先级自然就隐含在里面了！它们的归约顺序决定了它们优先级！
通过表达式对归约过程的理解，把它画成一个顺时钟的表圈更直观！如上图所示！(图片较大，另存为下载可正常查阅)
在中心处写了一段：运算符的结合只能从高到低而不能逆向进行（归约箭头方向决定了），较低运算符优先结合的方法是使用（）在零点方向。（）是相当复位运算符，使得较低运算符能够回到最高优先级处改变运算符结合顺序！这样较低运算符能够先运算之后再和较高运算符结合；注意归约过程不会跳跃！（下文示例可以得知这一点）即向‘上游’运算符结合，必须顺时钟走一圈，并且使用了()，否则达到零点前expression处就归约停止！
举个简单例子帮助理解这一段话：a+1<<8和a+(1<<8)
a+1<<8归约过程 a是id->primary-expr->postfix-expr->unary-expr->cast-expr->mul-expre->additive-expr(暂停) + 1是constant->primary-expr->postfix-expr->unary-expr->cast-expr->mul-expr(暂停) 然后additive-expr+mul-expr->additive-expr->shift-expr << 8是constant->primary-expr->postfix-expr->unary-expr->cast-expr->mul-expr->additive-expre(暂停) shift-expr<<additive-expr->shift-expr->relational-expr->equality-expr->...->expr(暂停) a+(1<<8)归约过程 a是id->primary-expr->postfix-expr->unary-expr->cast-expr->mul-expr->additive-expr(暂停) + ( 1是constant->primary-expr->postfix-expr->unary-expr->cast-expr->mul-expr->additive-expr->shift-expr(暂停) << 8是constant->primary-expr->postfix-expr->unary-expr->cast-expr->mul-expr->additive-expr(暂停) shift-expr<<additive-expr->shift-expr->relational-expr->equality-expr->...->expr(暂停) ) (expr)->primary-expr->postfix-expr->unary-expr->cast-expr->mul-expr additive-expr+mul-expr->additive-expr->shift-expr->...->expr
注意区分它们的不同！或许你会问如何知道到什么时候需要暂停，什么时候继续归约？答案就在非终结符的follow基上！什么是follow集以及first基，请参与《编译原理》第4章语法分析部分！这里就不重述了！
在这里你只需要知道：当下一个运算符是当前非终结符要归约到的非终结符的follow基时，则继续归约，否则暂停。比如上面这个例子1的归约shift-expression的follow基包含<<，那么additive-expression就需要归约到shift-expression，再往下，relational-expression的follow基不包含<<，所以shift-expression就到此暂停，不能再归约下去！而等待其他部分（<< 和additive-expression）到来，再一起归约！
如果上文看不懂，不要紧，在下面的示例中会给出很多组合范例，可以多看几个就理解了，当然你要结合C99文法或者上图来理解！
最后，为了更好描述原理，这里要相对前面的声明定义而言做些调整！单个示例进行提示！表达式示例分两大类，基本常用和高级复合！在此文将给出基本常用表达式归约。下一篇给出复合表达式归约。
输出依旧老风格，整个归约栈，其实是一颗树，只不过是栈的形式描述的。每次归约都是从孩子到父亲的建树过程，因为这是LR(1)，自底向上！（LL正好相反，自顶向下）整个归约纳入一个函数当中，每次栈的输出开头“declaration-specifiers declarator { block-item-list“它属于函数归约的部分，压在栈中而已，可以忽略不看，重点在表达式的归约上！另外，表达式之间过度部分如下，也可以忽略不看！
declaration-specifiers declarator { expression-statement
declaration-specifiers declarator { statement
declaration-specifiers declarator { block-item
declaration-specifiers declarator { block-item-list
2、表达式归约
2.1、基本表达式
示例代码
void basic_exp()
{
left = a[i];
left = i++;
left = i--;
left = fun(i);
left = girl.age;
left = girl->wight;
left = ++i;
left = --i;
left = *a;
left = &a;
left = !a;
left = ~a;
left = +a;
left = -a;
left = sizeof(int);
left = (int *)a;
left = a * b;
left = a / b;
left = a % b;
left = a + b;
left = a - b;
left = a << 1;
left = b >> 1;
left = a > b;
left = a < b;
left = a <= b;
left = a >= b;
left = a != b;
left = a == b;
left = a & b;
left = a ^ b;
left = a | b;
left = a && b;
left = a || b;
left = a > b ? a : b;
left = a = 1;
left = a >>= 1;
left = a, b;
left = (a + b) * c;
}
归约过程
void basic_exp()
{
curr: void next: basic_exp
type-specifier
declaration-specifiers
curr: ID next: (
declaration-specifiers direct-declarator
curr: ( next: )
curr: ) next: {
declaration-specifiers direct-declarator
declaration-specifiers declarator
curr: { next: left
left = a[i];
curr: ID next: =
declaration-specifiers declarator { primary-expression
declaration-specifiers declarator { postfix-expression
declaration-specifiers declarator { unary-expression
curr: = next: a
declaration-specifiers declarator { unary-expression assignment-operator
curr: ID next: [
declaration-specifiers declarator { unary-expression assignment-operator primary-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression
curr: [ next: i
curr: ID next: ]
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ primary-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ postfix-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ unary-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ cast-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ multiplicative-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ additive-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ shift-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ relational-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ equality-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ AND-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ exclusive-OR-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ inclusive-OR-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ logical-AND-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ logical-OR-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ conditional-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ assignment-expression
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression [ expression
curr: ] next: ;
declaration-specifiers declarator { unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { unary-expression assignment-operator unary-expression
declaration-specifiers declarator { unary-expression assignment-operator cast-expression
declaration-specifiers declarator { unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { unary-expression assignment-operator additive-expression
declaration-specifiers declarator { unary-expression assignment-operator shift-expression
declaration-specifiers declarator { unary-expression assignment-operator relational-expression
declaration-specifiers declarator { unary-expression assignment-operator equality-expression
declaration-specifiers declarator { unary-expression assignment-operator AND-expression
declaration-specifiers declarator { unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { assignment-expression
declaration-specifiers declarator { expression
curr: ; next: left
declaration-specifiers declarator { expression-statement
declaration-specifiers declarator { statement
declaration-specifiers declarator { block-item
declaration-specifiers declarator { block-item-list
left = i--;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: i
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: --
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
curr: -- next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = fun(i);
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: fun
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: (
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
curr: ( next: i
curr: ID next: )
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( assignment-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression ( argument-expression-list
curr: ) next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = girl.age;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: girl
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: .
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
curr: . next: age
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = girl->wight;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: girl
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: ->
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
curr: -> next: wight
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = ++i;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: ++
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ++ next: i
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ++ primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ++ postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ++ unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = --i;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: --
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: -- next: i
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator -- primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator -- postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator -- unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
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curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
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curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
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declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
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curr: ID next: ;
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declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
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declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
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curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
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curr: ; next: left
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declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
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curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
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curr: ; next: left
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declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = b >> 1;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
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declaration-specifiers declarator { block-item-list assignment-expression
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curr: ; next: left
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declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
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curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
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curr: ; next: left
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declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
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curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
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curr: ID next: =
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curr: ; next: left
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declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression != relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
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curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
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declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: ==
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
curr: == next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression == relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a & b;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: &
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
curr: & next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression & equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a ^ b;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: ^
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
curr: ^ next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression ^ AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a | b;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: |
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
curr: | next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression | exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a && b;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: &&
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
curr: && next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression && inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a || b;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: ||
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
curr: || next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression || logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a > b ? a : b;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: >
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
curr: > next: b
curr: ID next: ?
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression > primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression > postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression > unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression > cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression > multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression > additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression > shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
curr: ? next: a
curr: ID next: :
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? assignment-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression
curr: : next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression ? expression : conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a >>= 1;//其余赋值运算符都一样过程
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: >>=
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
curr: >>= next: 1
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator
curr: 1 next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = a, b;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: a
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ID next: ,
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: , next: b
curr: ID next: ;
declaration-specifiers declarator { block-item-list expression , primary-expression
declaration-specifiers declarator { block-item-list expression , postfix-expression
declaration-specifiers declarator { block-item-list expression , unary-expression
declaration-specifiers declarator { block-item-list expression , cast-expression
declaration-specifiers declarator { block-item-list expression , multiplicative-expression
declaration-specifiers declarator { block-item-list expression , additive-expression
declaration-specifiers declarator { block-item-list expression , shift-expression
declaration-specifiers declarator { block-item-list expression , relational-expression
declaration-specifiers declarator { block-item-list expression , equality-expression
declaration-specifiers declarator { block-item-list expression , AND-expression
declaration-specifiers declarator { block-item-list expression , exclusive-OR-expression
declaration-specifiers declarator { block-item-list expression , inclusive-OR-expression
declaration-specifiers declarator { block-item-list expression , logical-AND-expression
declaration-specifiers declarator { block-item-list expression , logical-OR-expression
declaration-specifiers declarator { block-item-list expression , conditional-expression
declaration-specifiers declarator { block-item-list expression , assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: left
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
left = (a + b) * c;
curr: ID next: =
declaration-specifiers declarator { block-item-list primary-expression
declaration-specifiers declarator { block-item-list postfix-expression
declaration-specifiers declarator { block-item-list unary-expression
curr: = next: (
declaration-specifiers declarator { block-item-list unary-expression assignment-operator
curr: ( next: a
curr: ID next: +
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( additive-expression
curr: + next: b
curr: ID next: )
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( additive-expression + primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( additive-expression + postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( additive-expression + unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( additive-expression + cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( additive-expression + multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( assignment-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator ( expression
curr: ) next: *
declaration-specifiers declarator { block-item-list unary-expression assignment-operator primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
curr: * next: c
curr: ID next: ;
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression * primary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression * postfix-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression * unary-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression * cast-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator multiplicative-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator additive-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator shift-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator relational-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator equality-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator exclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator inclusive-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-AND-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator logical-OR-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator conditional-expression
declaration-specifiers declarator { block-item-list unary-expression assignment-operator assignment-expression
declaration-specifiers declarator { block-item-list assignment-expression
declaration-specifiers declarator { block-item-list expression
curr: ; next: }
declaration-specifiers declarator { block-item-list expression-statement
declaration-specifiers declarator { block-item-list statement
declaration-specifiers declarator { block-item-list block-item
declaration-specifiers declarator { block-item-list
curr: } next: NULL
declaration-specifiers declarator compound-statement
function-definition
function-definition-list
translation-unit
总结
你会发现相同优先级的运算符，它们归约过程完全一样，比如*/%，再比如< > <= >=，而不同优先级的运算符归约过程略有区别！总体都相似，都是围绕表盘顺时钟转一圈！在下文当中，你将会看到复合表达式中，它将非常喜欢转圈圈！^!^！
声明：写了前三篇，发现已经被爬虫爬走了，爬走就爬走呗，这没啥，关键是没有注明来源，实在是不尊重我的劳动！别人还因为我抄他的呢！！！
特此声明：
21世纪什么最重要，开源！知识无贵贱，知识无国界！知识需要传播，知识需要应用！不要版权，但要尊重劳动，转载请注明出处！
作者：my_live_123
下篇：高级复合表达式
时间： 2024-12-29 11:30:16