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1. Change the implemention of prod and sum to make them behave better.
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2. Simplify codes of latex compiler.
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@zasdfgbnm
zasdfgbnm committed Sep 15, 2011
1 parent 099fb18 commit 7e37c61
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Showing 6 changed files with 243 additions and 110 deletions.
203 changes: 96 additions & 107 deletions src/FMELatexCompiler.as
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Expand Up @@ -165,88 +165,19 @@ package
resultArr.push(result);
return Latex;
}
private static function testScript(Latex:String,who:FMEContainer,array:Array):String{
var origin:String = Latex;
var tmporigin:String;
var len:int = Latex.length;
var main:String = null;
var superscript:String = null;
var subscript:String = null;
var resultArr:Array = new Array();

Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
return origin;
main = resultArr.pop();

if(Latex.charAt(0)=="^"){
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
return origin;
superscript = resultArr.pop();

if(Latex.charAt(0)=="_"){
tmporigin = Latex;
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
Latex = tmporigin;
else
subscript = resultArr.pop();
}
}else if(Latex.charAt(0)=="_"){
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
return origin;
subscript = resultArr.pop();

if(Latex.charAt(0)=="^"){
tmporigin = Latex;
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
Latex = tmporigin;
else
superscript = resultArr.pop();
}
}else{
return origin;
}
array.push(new FMEScript(who,main,superscript,subscript));
return Latex;
}
private static function testOverset(Latex:String,who:FMEContainer,array:Array):String{
private static function testUnderOverset(Latex:String,who:FMEContainer,array:Array):String{
var origin:String = Latex;
var type:Class;
var overset:RegExp = /(?<=^\\overset).*/g;
var underset:RegExp = new RegExp("(?<=^\\\\underset).*","g");
var matches:Array = Latex.match(overset);
if(matches.length!=0){
Latex = matches[0];
var main:String;
var _set:String;
var resultArr:Array = new Array();
var len:int = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
return origin;
main = resultArr.pop();
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
return origin;
_set = resultArr.pop();
array.push(new FMEOverset(who,main,_set));
if(matches.length!=0)
type = FMEOverset;
else{
matches = Latex.match(underset);
if(matches.length!=0)
type = FMEUnderset
}
return Latex;
}
private static function testUnderset(Latex:String,who:FMEContainer,array:Array):String{
var origin:String = Latex;
var underset:RegExp = new RegExp("(?<=^\\\\underset).*","g");
var matches:Array = Latex.match(underset);
if(matches.length!=0){
Latex = matches[0];
var main:String;
Expand All @@ -261,7 +192,7 @@ package
if(Latex.length==len)
return origin;
_set = resultArr.pop();
array.push(new FMEUnderset(who,main,_set));
array.push(new type(who,main,_set));
}
return Latex;
}
Expand All @@ -288,7 +219,6 @@ package
new RegExp("^\\\\(ker|arccos|inf|max|arctan|log|min)(?![a-zA-Z])","g"),
new RegExp("^\\\\(sin|ln|arg)(?![a-zA-Z])","g")
//new RegExp("^\\\\()(?![a-zA-Z])","g"),
//new RegExp("^\\\\()(?![a-zA-Z])","g"),
];
for each(var reg:RegExp in regs){
var matchs:Array = Latex.match(reg);
Expand Down Expand Up @@ -319,37 +249,99 @@ package
}
return Latex;
}
private static function testMatchedBracket(Latex:String,who:FMEContainer,array:Array):String{
private static function testMatchedBrackets(Latex:String,who:FMEContainer,array:Array):String{
var body:String;
var resultArr:Array = new Array();
var type:Class;
var len:int = Latex.length;
Latex = testMatched("\\\\left\\s*\\[","\\\\right\\s*\\]",Latex,resultArr);
if(Latex.length!=len){
body = resultArr.pop();
array.push(new FMEMatchedBracket(who,body));
if(Latex.length!=len)
type = FMEMatchedBracket;
else{
Latex = testMatched("\\\\left\\s*\\(","\\\\right\\s*\\)",Latex,resultArr);
if(Latex.length!=len)
type = FMEMatchedParen;
else{
Latex = testMatched("\\\\left\\s*\\\\{","\\\\right\\s*\\\\}",Latex,resultArr);
if(Latex.length!=len)
type = FMEMatchedCurly;
else
return Latex;
}
}
body = resultArr.pop();
array.push(new type(who,body));
return Latex;
}
private static function testMatchedParen(Latex:String,who:FMEContainer,array:Array):String{
var body:String;
var resultArr:Array = new Array();
private static function testSumProdScript(Latex:String,who:FMEContainer,array:Array):String{
var origin:String = Latex;
var tmporigin:String;
var sum:RegExp = /(?<=^\\sum).*/g;
var prod:RegExp = /(?<=^\\prod).*/g;
var main:String;
var matches:Array = Latex.match(sum);
var len:int = Latex.length;
Latex = testMatched("\\\\left\\s*\\(","\\\\right\\s*\\)",Latex,resultArr);
if(Latex.length!=len){
body = resultArr.pop();
array.push(new FMEMatchedParen(who,body));
}
return Latex;
}
private static function testMatchedCurly(Latex:String,who:FMEContainer,array:Array):String{
var body:String;
var up:String = null;
var down:String = null;
var resultArr:Array = new Array();
var len:int = Latex.length;
Latex = testMatched("\\\\left\\s*\\\\{","\\\\right\\s*\\\\}",Latex,resultArr);
if(Latex.length!=len){
body = resultArr.pop();
array.push(new FMEMatchedCurly(who,body));
var type:Class;
if(matches.length!=0){
type = FMESum;
Latex = matches.pop();
}else{
matches = Latex.match(prod);
if(matches.length!=0){
type = FMEProd;
Latex = matches.pop();
}else{
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length!=len){
main = resultArr.pop();
type = FMEScript;
}else
return origin;
}
}
if(Latex.charAt(0)=="^"){
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
return origin;
up = resultArr.pop();

if(Latex.charAt(0)=="_"){
tmporigin = Latex;
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
Latex = tmporigin;
else
down = resultArr.pop();
}
}else if(Latex.charAt(0)=="_"){
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
return origin;
down = resultArr.pop();

if(Latex.charAt(0)=="^"){
tmporigin = Latex;
Latex = Latex.substr(1);
len = Latex.length;
Latex = testMatched("\\{","\\}",Latex,resultArr);
if(Latex.length==len)
Latex = tmporigin;
else
up = resultArr.pop();
}
}else{
return origin;
}
array.push(type==FMEScript?new type(who,main,up,down):new type(who,up,down));
return Latex;
}
private static function clearLeftSpace(Latex:String):String{
Expand All @@ -359,16 +351,13 @@ package
var len:int;
var arr:Array = new Array;
while((len=(Latex=clearLeftSpace(Latex)).length)>0){
Latex = testSumProdScript(Latex,who,arr);
Latex = testFraction(Latex,who,arr);
Latex = testSqrt(Latex,who,arr);
Latex = testScript(Latex,who,arr);
Latex = testOverset(Latex,who,arr);
Latex = testUnderset(Latex,who,arr);
Latex = testUnderOverset(Latex,who,arr);
Latex = testEscChar(Latex,who,arr);
Latex = testVec(Latex,who,arr);
Latex = testMatchedBracket(Latex,who,arr);
Latex = testMatchedParen(Latex,who,arr);
Latex = testMatchedCurly(Latex,who,arr);
Latex = testMatchedBrackets(Latex,who,arr);
if(Latex.length==len)
Latex = testFirstAsPlainOrSkip(Latex,who,arr);
}
Expand Down
15 changes: 15 additions & 0 deletions src/FMEUnits/FMEComposeds/FMEProd.as
View file
@@ -0,0 +1,15 @@
package FMEUnits.FMEComposeds
{
import flash.display.Sprite;

public class FMEProd extends FMESumProd
{
[Embed(source="svgs/prod.svg")]
private var opcls:Class;
private var op:Sprite = new opcls();
public function FMEProd(who:FMEContainer, upLatex:String, downLatex:String)
{
super(who,upLatex,downLatex,op,"\\prod",3.3445,3.3445,0,0,3.3445,3.3445,50);
}
}
}
15 changes: 15 additions & 0 deletions src/FMEUnits/FMEComposeds/FMESum.as
View file
@@ -0,0 +1,15 @@
package FMEUnits.FMEComposeds
{
import flash.display.Sprite;

public class FMESum extends FMESumProd
{
[Embed(source="svgs/sum.svg")]
private var opcls:Class;
private var op:Sprite = new opcls();
public function FMESum(who:FMEContainer, upLatex:String, downLatex:String)
{
super(who,upLatex,downLatex,op,"\\sum",3.3445,3.3445,0,0,3.3445,3.3445,50);
}
}
}

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