Cache list value in JS foreach loops.

This commit is contained in:
Neil Fraser
2015-03-20 16:24:09 -07:00
parent c4d3fb721e
commit e571533f6a
3 changed files with 149 additions and 108 deletions

View File

@@ -47,8 +47,8 @@ d+" = 0; "+d+" < "+e+"; "+d+"++) {\n"+c+"}\n")};Blockly.JavaScript.controls_whil
Blockly.JavaScript.controls_for=function(a){var b=Blockly.JavaScript.variableDB_.getName(a.getFieldValue("VAR"),Blockly.Variables.NAME_TYPE),c=Blockly.JavaScript.valueToCode(a,"FROM",Blockly.JavaScript.ORDER_ASSIGNMENT)||"0",d=Blockly.JavaScript.valueToCode(a,"TO",Blockly.JavaScript.ORDER_ASSIGNMENT)||"0",e=Blockly.JavaScript.valueToCode(a,"BY",Blockly.JavaScript.ORDER_ASSIGNMENT)||"1",f=Blockly.JavaScript.statementToCode(a,"DO"),f=Blockly.JavaScript.addLoopTrap(f,a.id);if(Blockly.isNumber(c)&&Blockly.isNumber(d)&&
Blockly.isNumber(e)){var g=parseFloat(c)<=parseFloat(d);a="for ("+b+" = "+c+"; "+b+(g?" <= ":" >= ")+d+"; "+b;b=Math.abs(parseFloat(e));a=(1==b?a+(g?"++":"--"):a+((g?" += ":" -= ")+b))+(") {\n"+f+"}\n")}else a="",g=c,c.match(/^\w+$/)||Blockly.isNumber(c)||(g=Blockly.JavaScript.variableDB_.getDistinctName(b+"_start",Blockly.Variables.NAME_TYPE),a+="var "+g+" = "+c+";\n"),c=d,d.match(/^\w+$/)||Blockly.isNumber(d)||(c=Blockly.JavaScript.variableDB_.getDistinctName(b+"_end",Blockly.Variables.NAME_TYPE),
a+="var "+c+" = "+d+";\n"),d=Blockly.JavaScript.variableDB_.getDistinctName(b+"_inc",Blockly.Variables.NAME_TYPE),a+="var "+d+" = ",a=Blockly.isNumber(e)?a+(Math.abs(e)+";\n"):a+("Math.abs("+e+");\n"),a+="if ("+g+" > "+c+") {\n",a+=Blockly.JavaScript.INDENT+d+" = -"+d+";\n",a+="}\n",a+="for ("+b+" = "+g+";\n "+d+" >= 0 ? "+b+" <= "+c+" : "+b+" >= "+c+";\n "+b+" += "+d+") {\n"+f+"}\n";return a};
Blockly.JavaScript.controls_forEach=function(a){var b=Blockly.JavaScript.variableDB_.getName(a.getFieldValue("VAR"),Blockly.Variables.NAME_TYPE),c=Blockly.JavaScript.valueToCode(a,"LIST",Blockly.JavaScript.ORDER_ASSIGNMENT)||"[]",d=Blockly.JavaScript.statementToCode(a,"DO"),d=Blockly.JavaScript.addLoopTrap(d,a.id);a=Blockly.JavaScript.variableDB_.getDistinctName(b+"_index",Blockly.Variables.NAME_TYPE);d=Blockly.JavaScript.INDENT+b+" = "+c+"["+a+"];\n"+d;return"for (var "+a+" in "+c+") {\n"+d+"}\n"};
Blockly.JavaScript.controls_flow_statements=function(a){switch(a.getFieldValue("FLOW")){case "BREAK":return"break;\n";case "CONTINUE":return"continue;\n"}throw"Unknown flow statement.";};
Blockly.JavaScript.controls_forEach=function(a){var b=Blockly.JavaScript.variableDB_.getName(a.getFieldValue("VAR"),Blockly.Variables.NAME_TYPE),c=Blockly.JavaScript.valueToCode(a,"LIST",Blockly.JavaScript.ORDER_ASSIGNMENT)||"[]",d=Blockly.JavaScript.statementToCode(a,"DO"),d=Blockly.JavaScript.addLoopTrap(d,a.id);a="";var e=c;c.match(/^\w+$/)||(e=Blockly.JavaScript.variableDB_.getDistinctName(b+"_list",Blockly.Variables.NAME_TYPE),a+="var "+e+" = "+c+";\n");c=Blockly.JavaScript.variableDB_.getDistinctName(b+
"_index",Blockly.Variables.NAME_TYPE);d=Blockly.JavaScript.INDENT+b+" = "+e+"["+c+"];\n"+d;return a+("for (var "+c+" in "+e+") {\n"+d+"}\n")};Blockly.JavaScript.controls_flow_statements=function(a){switch(a.getFieldValue("FLOW")){case "BREAK":return"break;\n";case "CONTINUE":return"continue;\n"}throw"Unknown flow statement.";};
// Copyright 2012 Google Inc. Apache License 2.0
Blockly.JavaScript.math={};Blockly.JavaScript.math_number=function(a){return[parseFloat(a.getFieldValue("NUM")),Blockly.JavaScript.ORDER_ATOMIC]};
Blockly.JavaScript.math_arithmetic=function(a){var b={ADD:[" + ",Blockly.JavaScript.ORDER_ADDITION],MINUS:[" - ",Blockly.JavaScript.ORDER_SUBTRACTION],MULTIPLY:[" * ",Blockly.JavaScript.ORDER_MULTIPLICATION],DIVIDE:[" / ",Blockly.JavaScript.ORDER_DIVISION],POWER:[null,Blockly.JavaScript.ORDER_COMMA]}[a.getFieldValue("OP")],c=b[0],b=b[1],d=Blockly.JavaScript.valueToCode(a,"A",b)||"0";a=Blockly.JavaScript.valueToCode(a,"B",b)||"0";return c?[d+c+a,b]:["Math.pow("+d+", "+a+")",Blockly.JavaScript.ORDER_FUNCTION_CALL]};