diff options
Diffstat (limited to 'node_modules/math-expression-evaluator/src/postfix_evaluator.js')
| -rwxr-xr-x | node_modules/math-expression-evaluator/src/postfix_evaluator.js | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/node_modules/math-expression-evaluator/src/postfix_evaluator.js b/node_modules/math-expression-evaluator/src/postfix_evaluator.js deleted file mode 100755 index 3d162e46..00000000 --- a/node_modules/math-expression-evaluator/src/postfix_evaluator.js +++ /dev/null @@ -1,105 +0,0 @@ -var Mexp=require('./postfix.js');
-Mexp.prototype.postfixEval = function (UserDefined) {
- 'use strict';
- UserDefined=UserDefined||{};
- UserDefined.PI=Math.PI;
- UserDefined.E=Math.E;
- var stack=[],pop1,pop2,pop3;
- var disp=[];
- var temp='';
- var arr=this.value;
- var bool=(typeof UserDefined.n!=="undefined");
- for(var i=0;i<arr.length;i++){
- if(arr[i].type===1){
- stack.push({value:arr[i].value,type:1});
- }
- else if(arr[i].type===3){
- stack.push({value:UserDefined[arr[i].value],type:1});
- }
- else if(arr[i].type===0){
- if(typeof stack[stack.length-1].type==="undefined"){
- stack[stack.length-1].value.push(arr[i]);
- }
- else stack[stack.length-1].value=arr[i].value(stack[stack.length-1].value);
- }
- else if(arr[i].type===7){
- if(typeof stack[stack.length-1].type==="undefined"){
- stack[stack.length-1].value.push(arr[i]);
- }
- else stack[stack.length-1].value=arr[i].value(stack[stack.length-1].value);
- }
- else if(arr[i].type===8){
- pop1=stack.pop();
- pop2=stack.pop();
- stack.push({type:1,value:arr[i].value(pop2.value,pop1.value)});
- }
- else if(arr[i].type===10){
- pop1=stack.pop();
- pop2=stack.pop();
- if(typeof pop2.type==="undefined"){
- pop2.value=pop2.concat(pop1);
- pop2.value.push(arr[i]);
- stack.push(pop2);
- }
- else if (typeof pop1.type==="undefined") {
- pop1.unshift(pop2);
- pop1.push(arr[i]);
- stack.push(pop1);
- }
- else{
- stack.push({type:1,value:arr[i].value(pop2.value,pop1.value)});
- }
- }
- else if(arr[i].type===2||arr[i].type===9){
- pop1=stack.pop();
- pop2=stack.pop();
- if(typeof pop2.type==="undefined"){
- console.log(pop2);
- pop2=pop2.concat(pop1);
- pop2.push(arr[i]);
- stack.push(pop2);
- }
- else if (typeof pop1.type==="undefined") {
- pop1.unshift(pop2);
- pop1.push(arr[i]);
- stack.push(pop1);
- }
- else{
- stack.push({type:1,value:arr[i].value(pop2.value,pop1.value)});
- }
- }
- else if(arr[i].type===12){
- pop1=stack.pop();
- if (typeof pop1.type!=="undefined") {
- pop1=[pop1];
- }
- pop2=stack.pop();
- pop3=stack.pop();
- stack.push({type:1,value:arr[i].value(pop3.value,pop2.value,new Mexp(pop1))});
- }
- else if(arr[i].type===13){
- if(bool){
- stack.push({value:UserDefined[arr[i].value],type:3});
- }
- else stack.push([arr[i]]);
- }
- }
- if (stack.length>1) {
- throw(new Mexp.exception("Uncaught Syntax error"));
- }
- return stack[0].value>1000000000000000?"Infinity":parseFloat(stack[0].value.toFixed(15));
-};
-Mexp.eval=function(str,tokens,obj){
- if (typeof tokens==="undefined") {
- return this.lex(str).toPostfix().postfixEval();
- }
- else if (typeof obj==="undefined") {
- if (typeof tokens.length!=="undefined")
- return this.lex(str,tokens).toPostfix().postfixEval();
- else
- return this.lex(str).toPostfix().postfixEval(tokens);
- }
- else
- return this.lex(str,tokens).toPostfix().postfixEval(obj);
-};
-module.exports=Mexp;
\ No newline at end of file |