{"id":512,"date":"2022-03-05T10:25:25","date_gmt":"2022-03-05T02:25:25","guid":{"rendered":"https:\/\/www.ccagml.com\/?p=512"},"modified":"2022-07-06T10:25:59","modified_gmt":"2022-07-06T02:25:59","slug":"lua%e4%b8%ad%e7%9a%84statement%e7%b1%bb%e5%88%abexpr","status":"publish","type":"post","link":"https:\/\/www.ccagml.com\/?p=512","title":{"rendered":"lua\u4e2d\u7684statement\u7c7b\u522bexpr"},"content":{"rendered":"<ul>\n<li>## 2.1 statement\u4e2d\u7684expr\u7c7b\u522b<\/li>\n<\/ul>\n<ol>\n<li>expr\u662f\u4ec0\u4e48<br \/>\n\u53ef\u4ee5\u8ba4\u4e3aexpr \u662f\u4e00\u4e2a\u8868\u8fbe\u5f0f, \u6700\u540e\u4f1a\u5f97\u5230\u4e00\u4e2a\u503c, \u8868\u8fbe\u5f0f \u53ef\u80fd\u662f<\/p>\n<ol>\n<li>unop \u7684 \u6bd4\u5982 -a\u3001not a \u3001 #a<\/li>\n<li>simpleexp \u6bd4\u5982 123 \u3001&#8221;123&#8243;, nil, true, false, &#8230;, a()<\/li>\n<li>binop \u6bd4\u5982 1+2, 1 and 1, 1 &lt; 2<\/li>\n<\/ol>\n<\/li>\n<li>exprstat \u5206\u4e3a\n<ul>\n<li>func\n<ul>\n<li>\u4f8b\u5982 test()<\/li>\n<\/ul>\n<\/li>\n<li>assignment\n<ul>\n<li>\u4f8b\u5982 a = test()<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>primaryexp \u5206\u4e3a\n<ul>\n<li>prefixexp<\/li>\n<\/ul>\n<\/li>\n<li>prefixexp \u5206\u4e3a\n<ul>\n<li>\u53d8\u91cf\u540dTK_NAME<\/li>\n<li>&#8216;(&#8216;expr&#8217;)&#8217;<\/li>\n<\/ul>\n<\/li>\n<li>primaryexp \u5728\u5904\u7406\u5b8cprefixexp\u4e4b\u540e,\u4ed6\u7684\u524d\u9762\u53ef\u80fd\u662f\u4e00\u4e2a\u53d8\u91cf\u540d,\u4e5f\u53ef\u80fd\u662f\u4e00\u4e2a\u88ab()\u5305\u8d77\u6765\u7684\u8868\u8fbe\u5f0f,\u90a3\u4e48\u63a5\u4e0b\u53bb\u53ef\u80fd\u9047\u5230\u7684\u662f\n<ul>\n<li>. \u51fd\u6570\u540d. \u53d6\u503c\n<ul>\n<li>.\u4e4b\u540e \u53c8\u662f\u4e00\u4e2a\u540d\u79f0 \u7c7b\u4f3c a.b \u6216\u8005 a:b()<\/li>\n<\/ul>\n<\/li>\n<li>[ \u8ba4\u4e3a\u662ftable\u8981\u53d6\u5185\u5bb9\n<ul>\n<li>expr  \u7c7b\u4f3c \u8981\u53d6 a[expr] \u7684\u503c<\/li>\n<\/ul>\n<\/li>\n<li>: \u51fd\u6570\u540d: \u8ba4\u4e3a\u63a5\u4e0b\u53bb\u662f\u51fd\u6570\n<ul>\n<li>:\u4e4b\u540e \u53c8\u662f\u4e00\u4e2a\u540d\u79f0 a:b()<\/li>\n<\/ul>\n<\/li>\n<li>( \u3001\u5b57\u7b26\u4e32 \u3001{  \u51fd\u6570\u7684\u53c2\u6570<\/li>\n<\/ul>\n<\/li>\n<li>assignment \u5206\u4e3a\n<ul>\n<li>, \u5219\u53c8\u662f\u4e00\u4e2a primaryexp<\/li>\n<li>= \u5219\u662f\u4e00\u4e2a explist1<\/li>\n<\/ul>\n<\/li>\n<li>explist1\n<ul>\n<li>, \u89e3\u6790 {expr,expr,expr}<\/li>\n<\/ul>\n<\/li>\n<li>expr\n<ul>\n<li>unop\n<ul>\n<li>&#8216;-&#8216;<\/li>\n<li>not<\/li>\n<li>&#8216;#&#8217;<\/li>\n<\/ul>\n<\/li>\n<li>simpleexp\n<ul>\n<li>\u6570\u5b57<\/li>\n<li>\u5b57\u7b26\u4e32<\/li>\n<li>nil<\/li>\n<li>true<\/li>\n<li>false<\/li>\n<li>&#8230;<\/li>\n<li>{<\/li>\n<li>\u51fd\u6570\u4f53<\/li>\n<li>primaryexp<\/li>\n<\/ul>\n<\/li>\n<li>binop\n<ul>\n<li>\u6709&#8217;+&#8217; | &#8216;-&#8216; | &#8216;*&#8217; | &#8216;\/&#8217; | &#8216;%&#8217; | &#8216;^&#8217; | &#8216;&amp;&#8217; | &#8216;|&#8217; | &#8216;~&#8217; | &#8216;&lt;&lt;&#8216; | &#8216;>>&#8217; | &#8216;..&#8217; | &#8216;>&#8217; | &#8216;&lt;&#8216; | &#8216;=&#8217; | &#8216;>=&#8217; | &#8216;&lt;=&#8217; | &#8216;<span class=\"text-highlighted-inline\" style=\"background-color: #fffd38;\">&#8216; | &#8216;~=&#8217; | and | or<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>## 2.1 statement\u4e2d\u7684expr\u7c7b\u522b expr\u662f\u4ec0\u4e48 \u53ef\u4ee5\u8ba4\u4e3aexpr \u662f\u4e00\u4e2a\u8868\u8fbe\u5f0f, \u6700\u540e\u4f1a\u5f97\u5230<a href=\"https:\/\/www.ccagml.com\/?p=512\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">lua\u4e2d\u7684statement\u7c7b\u522bexpr<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[32],"tags":[],"_links":{"self":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/512"}],"collection":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=512"}],"version-history":[{"count":1,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/512\/revisions"}],"predecessor-version":[{"id":513,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/512\/revisions\/513"}],"wp:attachment":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=512"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=512"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=512"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}