Javascript json格式的jison启动条件
尽管在文档和论坛中搜索了很长时间,但我仍然无法在node.js中使用JSON格式获得Jison开始条件的正确语法Javascript json格式的jison启动条件,javascript,node.js,jison,Javascript,Node.js,Jison,尽管在文档和论坛中搜索了很长时间,但我仍然无法在node.js中使用JSON格式获得Jison开始条件的正确语法 > ** Documentation at http://zaach.github.io/jison/docs/ says: > // Using the JSON format, start conditions are defined with an array > // before the rule’s > matcher {rules:[ >
> ** Documentation at http://zaach.github.io/jison/docs/ says:
> // Using the JSON format, start conditions are defined with an array
> // before the rule’s
> matcher {rules:[
> [['expect'], '[0-9]+"."[0-9]+', 'console.log( "found a float, = " + yytext );'
> ]]}
但不幸的是,没有人不提供完整的工作样本
我试图排除两个标记之间的任何文本。在这种情况下,lex将使用启动条件。Jison文档说它应该可以工作。尽管如此,由于Jison的错误消息不是很直观,我还是希望能找到一个可以继续工作的示例
有人会有解决办法吗
var jison = require("jison").Parser;
grammar = {
"lex": {
"rules" : [ [" +" , "/* skip whitespace */"]
,[['mode1'], '[0-z]+\\b' , "return 'INFO';"]
,[['mode1'], '<\\/extensions>' , "this.popState(); return 'EXTEND';"]
,['<extensions>' , "this.begin('mode1'); return 'EXTSTART';"]
,['$' , "return 'EOL';"]
]
}, // end Lex rules
"bnf": { // WARNING: only one space in between TOKEN ex: "STOP EOF"
'data': [["EOL" , "this.cmd='EMPTY' ; return (this);"]
,['EXTSTART INFO EXTEND EOL' ,"this.cmd='EXTEN';this.value=$2;return (this);"]
]
}};
parser = new jison(grammar);
test= "\
<extensions>\
<opencpn:start></opencpn:start><opencpn:end></opencpn:end>\
<opencpn:viz>1</opencpn:viz>\
<opencpn:guid>714d1d6e-78be-46a0-af6e-2f3d0c505f6d</opencpn:guid>\
</extensions>";
data=parser.parse (test);
var jison=require(“jison”).Parser;
语法={
“法”:{
“规则”:[[“+”,“/*跳过空格*/”]
,['mode1'],“[0-z]+\\b',“return'INFO';”]
,['mode1'],'',this.popState();返回'EXTEND';“]
,['',this.begin('mode1');返回'EXTSTART';“]
,['$,“返回'EOL';”]
]
},//结束Lex规则
“bnf”:{//警告:令牌之间只有一个空格,例如:“停止EOF”
'data':[[“EOL”,“this.cmd='EMPTY';return(this);”]
,['EXTSTART INFO EXTEND-EOL',“this.cmd='EXTEN';this.value=$2;返回(this);”]
]
}};
parser=newjison(语法);
测试=”\
\
\
1\
714d1d6e-78be-46a0-af6e-2F3D0C0505F6D\
";
data=parser.parse(测试);
我目前的样品不合格
/node_modules/jison/node_modules/jison-lex/regexp-lexer.js:42
启动条件[条件[k]]。规则。推送(i)
不幸的是,没有人回答我的问题:) 我不得不对Jison Lexer代码进行反向工程,以找到正确的语法。我想这可能会对其他人有所帮助,答案如下:) Jison的词法条件在JSON语法下运行良好,但它们应该在名为“startConditions”的数组中预先声明,如下例所示
grammar = {
"lex": {
"startConditions" : { "INITIAL":"// Default initial Jison/Lex context"
,"MOD_EXT": "// extenstions context "
,"MOD_RTE": "// routes context"
},
"rules" : [['[\\n\\s]+' , "/* skip whitespace & new lines */"]
// extensions blocs
,[['INITIAL'], '<extensions>' , "this.begin('MOD_EXT');"]
,[['MOD_EXT'], '<\\/extensions>' , "this.popState();"]
,[['MOD_EXT'], '[<>\\/\\-\\s\\n]', "/* ignore */"]
,[['MOD_EXT'], '[0-z]+' , "/* ignore */"]
Etc...
grammar={
“法”:{
“startConditions”:{“INITIAL”:”//Default INITIAL Jison/Lex context”
,“MOD_EXT”:“//extensions context”
,“MOD_RTE”:“//路由上下文”
},
“规则”:[['[\\n\\s]+',“/*跳过空格和新行*/”]
//扩展集团
,['INITIAL'],''“this.begin('MOD_EXT');”]
,['MOD_EXT'],''“this.popState();”]
,[['MOD\u EXT'],“[\\/\-\\s\\n]”,“/*忽略*/”]
,[[MOD_EXT'],[0-z]+,“/*忽略*/”]
等
为了让每个人的生活更轻松,下面是一个简单的工作示例。
// Sample JISON start conditions with Jason syntax
var jison = require("jison").Parser;
grammar = {
"lex": {
"macros": { // few usefull macro
"slash": "\\/",
"space": "\\s+",
"quot" : "\\\'",
"dquot": "\\\"",
"dot" : "\\.",
"digit": "[0-9]",
"int" : "-?([0-9]+)",
"float": "-?([0-9]*\\.[0-9]+)",
"hexa" : "([0-9]|(a-h)|(A-H])+"
},
"startConditions" : { "INITIAL":"// Default initial Jison/Lex context"
,"MOD_EXT": "// extenstions context "
,"MOD_RTE": "// routes context"
},
"rules" : [['[\\n\\s]+' , "/* skip whitespace & new lines */"]
// extensions blocs
,[['INITIAL'], '<extensions>' , "this.begin('MOD_EXT');"]
,[['MOD_EXT'], '<\\/extensions>' , "this.popState();"]
,[['MOD_EXT'], '[<>\\/\\-\\s\\n]', "/* ignore */"]
,[['MOD_EXT'], '[0-z]+' , "/* ignore */"]
// routes points blocs
,[['INITIAL'],'<rtept' , "this.begin('MOD_RTE'); return 'RTE_BEG';"]
,[['MOD_RTE'], '<\\/rtept>' , "this.popState(); return 'RTE_END';"]
,[['MOD_RTE'], 'lat=' , "return 'LAT';"]
,[['MOD_RTE'], 'lon=' , "return 'LON';"]
,[['MOD_RTE'], '{float}' , "return 'CARD';"]
,[['MOD_RTE'], '<name>' , "return 'NAME_BEG';"]
,[['MOD_RTE'], '<\\/name>' , "return 'NAME_END';"]
,[['MOD_RTE'], '<time>' , "return 'TIME_BEG';"]
,[['MOD_RTE'], '<\\/time>' , "return 'TIME_END';"]
,[['MOD_RTE'], '<sym>' , "return 'SYM_BEG';"]
,[['MOD_RTE'], '<\\/sym>' , "return 'SYM_END';"]
,[['MOD_RTE'], '<type>' , "return 'TYPE_BEG';"]
,[['MOD_RTE'], '<\\/type>' , "return 'TYPE_END';"]
,[['MOD_RTE'], '<extensions>' , "this.begin('MOD_EXT');"]
,[['MOD_RTE'], '([0-z]|[-+])+\\b' , "return 'TEXT';"]
,[['MOD_RTE'], '[>{quot}{dquot}{space}]' , "// ignore"]
// end of parsing buffer
,['$' , "return 'EOL';"]
]
}, // end Lex rules
"bnf": { // WARNING: only one space in between TOKEN ex: "STOP EOF"
'data': [
["EOL" , "return ('EMPTY');"]
,["ROUTEPOINTS EOL", "return (this.route);"]
]
// handle multiple waypoints
// A routepoint should at least have a LAT+LONG+NAME
,'ROUTEPOINTS' : [ // store all waypoint in an array
["ROUTEPOINT", "console.log('Parsing First Waypts=%j',this.waypts);this.route=[]; this.route.push(this.waypts);"]
,["ROUTEPOINTS ROUTEPOINT", "console.log('Parsing Next Waypts=%j',this.waypts);;this.route.push(this.waypts);"]
]
// A routepoint should at least have a LAT+LONG+NAME
,'ROUTEPOINT' : [ // <rtept lat='47.542780648' lon='-2.896743643'>...
["RTE_BEG LATITUDE LONGITUDE DATE NAME SYM TYPE RTE_END", "this.waypts={lat:$2,lon:$3,name:$5,date:$4};"]
,["RTE_BEG LATITUDE LONGITUDE DATE NAME RTE_END", "this.waypts={lat:$2,lon:$3,name:$5,date:$4};"]
,["RTE_BEG LATITUDE LONGITUDE NAME RTE_END", "this.waypts={lat:$2,lon:$3,name:$4,date:'unknow'};"]
]
// lat='47.542780648'
,'LATITUDE' : [["LAT CARD", "$$=$2;"]]
// lon='-2.896743643'
, 'LONGITUDE' : [["LON CARD", "$$=$2;"]]
//<time>2014-09-16T21:55:19Z</time>\
, 'DATE' : [["TIME_BEG TEXT TIME_END", "$$=$2;"]]
// <name>001</name>\
, 'NAME' : [["NAME_BEG TEXT NAME_END", "$$=$2;"]]
// <sym>001</name>\
, 'SYM' : [["SYM_BEG TEXT SYM_END", "//ignore"]]
// <name>001</name>\
, 'TYPE' : [["TYPE_BEG TEXT TYPE_END", "//ignore"]]
}};
parser = new jison(grammar);
test= "\
<extensions>\
<opencpn:start></opencpn:start><opencpn:end></opencpn:end>\
<opencpn:viz>1</opencpn:viz>\
<opencpn:guid>714d1d6e-78be-46a0-af6e-2f3d0c505f6d</opencpn:guid>\
</extensions>\
<rtept lat='47.542780648' lon='-2.896743643'>\
<time>2014-09-16T21:55:19Z</time>\
<name>001</name>\
<sym>diamond</sym>\
<type>WPT</type>\
<extensions>\
<opencpn:guid>408c309c-6a8c-411d-815b-0c0054646d45</opencpn:guid>\
<opencpn:viz>1</opencpn:viz>\
<opencpn:viz_name>0</opencpn:viz_name>\
<opencpn:auto_name>1</opencpn:auto_name>\
</extensions>\
</rtept>\
<rtept lat='44.542780648' lon='-4.896743643'>\
<time>2014-08-16T21:55:19Z</time>\
<name>002</name>\
</rtept>\
<rtept lat='43.542780648' lon='-5.896743643'>\
<name>003</name>\
</rtept>\
<rtept lat='48.542780648' lon='-3.896743643'>\
<time>2014-10-16T21:55:19Z</time>\
<name>004</name>\
<sym>diamond</sym>\
<type>WPT</type>\
<extensions>\
<opencpn:guid>408c309c-6a8c-411d-815b-0c0054646d45</opencpn:guid>\
<opencpn:viz>1</opencpn:viz>\
<opencpn:viz_name>0</opencpn:viz_name>\
<opencpn:auto_name>1</opencpn:auto_name>\
</extensions>\
</rtept>";
route=parser.parse (test);
console.log ("\n\nMy GPX route's waypoints");
for (var waypts in route) {
console.log (" -- name: %s Lon: %s Lat:%s Date:%s", route [waypts].name, route [waypts].lat, route [waypts].lon, route [waypts].date);
};
console.log ("done");
//带有Jason语法的示例JISON启动条件
var jison=require(“jison”).Parser;
语法={
“法”:{
“宏”:{//很少有用的宏
“斜杠”:“\\/”,
“空格”:“\\s+”,
“quot”:“\\\”,
“dquot”:“\\\”,
“点”:“\\”,
“数字”:“[0-9]”,
“int”:“-?([0-9]+)”,
“浮动”:“-?([0-9]*\\.[0-9]+)”,
“hexa”:“([0-9]|(a-h)|(a-h])+”
},
“startConditions”:{“INITIAL”:”//Default INITIAL Jison/Lex context”
,“MOD_EXT”:“//extensions context”
,“MOD_RTE”:“//路由上下文”
},
“规则”:[['[\\n\\s]+',“/*跳过空格和新行*/”]
//扩展集团
,['INITIAL'],''“this.begin('MOD_EXT');”]
,['MOD_EXT'],''“this.popState();”]
,[['MOD\u EXT'],“[\\/\-\\s\\n]”,“/*忽略*/”]
,[[MOD_EXT'],[0-z]+,“/*忽略*/”]
//路线点集团
,['INITIAL'],'{quot}{dquot}{space}]',“//忽略”]
//解析缓冲区结束
,['$,“返回'EOL';”]
]
},//结束Lex规则
“bnf”:{//警告:令牌之间只有一个空格,例如:“停止EOF”
“数据”:[
[“EOL”,“return('EMPTY');”]
,[“ROUTEPOINTS EOL”,“返回(this.route);”]
]
//处理多个航路点
//routepoint至少应具有LAT+LONG+名称
,'ROUTEPOINTS':[//将所有航路点存储在一个数组中
[“ROUTEPOINT”、“console.log('解析第一个Waypts=%j',this.Waypts);this.route=[];this.route.push(this.Waypts);”]
,[“ROUTEPOINTS ROUTEPOINT”,“console.log('Parsing Next Waypts=%j',this.Waypts);;this.route.push(this.Waypts);”]
]
//routepoint至少应具有LAT+LONG+名称
,'ROUTEPOINT':[/。。。
[“RTE_BEG纬度经度日期名称SYM TYPE RTE_END”,“this.waypts={lat:$2,lon:$3,NAME:$5,DATE:$4};”]
,[“RTE_BEG纬度经度日期名称RTE_END”,“this.waypts={lat:$2,lon:$3,NAME:$5,DATE:$4};”
,[“RTE_BEG纬度经度名称RTE_END”,“this.waypts={lat:$2,lon:$3,NAME:$4,date:'unknow'};”
]
//纬度='47.542780648'
,“纬度”:[[“LAT卡”,“$$=$2;”]]
//lon='-2.896743643'
,“经度”:[[“LON卡”,“$$=$2;”]]
//2014-09-16T21:55:19Z\
,“日期”:[[“时间”\u BEG TEXT TIME\u END”,“$$=$2;”]]
// 001\
,'NAME':[[“NAME\u BEG TEXT NAME\u END”,“$$=$2;”]]
// 001\
,'SYM':[[“SYM_BEG TEXT SYM_END”,“//忽略”]]
// 001\
,'TYPE':[[“TYPE\u BEG TEXT TYPE\u END”,“//忽略”]]
}};
parser=newjison(语法);
测试=”\
\
\
1\
714d1d6e-78be-46a0-af6e-2F3D0C0505F6D\
\
\
2014-09-16T21:55:19Z\
001\
钻石\
WPT\
\
408c309c-6a8c-411d-815b-0c0054646d45\
1\
0\
1\
\
\
\
2014-08-16T21:55:19Z\
002\
\
\
003\
\
\
2014-10-16T21:55:19Z\
004\
钻石\
WPT\
\
408c309c-6a8c-411d-81