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Automatic commit Wed Jan 15 03:00:09 PST 2014

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ellen.spertus
2014-01-15 03:00:09 -08:00
parent ce63f70b37
commit bd778cdfea
183 changed files with 2213 additions and 2072 deletions
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512
generators/dart/math.js
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@@ -1,7 +1,7 @@
/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* Copyright 2014 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
@@ -27,11 +27,12 @@ goog.provide('Blockly.Dart.math');
goog.require('Blockly.Dart');
Blockly.Dart.addReservedWords('Math');
Blockly.Dart.math_number = function() {
Blockly.Dart['math_number'] = function(block) {
// Numeric value.
var code = window.parseFloat(this.getTitleValue('NUM'));
var code = window.parseFloat(block.getFieldValue('NUM'));
// -4.abs() returns -4 in Dart due to strange order of operation choices.
// -4 is actually an operator and a number. Reflect this in the order.
var order = code < 0 ?
@@ -39,14 +40,20 @@ Blockly.Dart.math_number = function() {
return [code, order];
};
Blockly.Dart.math_arithmetic = function() {
Blockly.Dart['math_arithmetic'] = function(block) {
// Basic arithmetic operators, and power.
var mode = this.getTitleValue('OP');
var tuple = Blockly.Dart.math_arithmetic.OPERATORS[mode];
var OPERATORS = {
ADD: [' + ', Blockly.Dart.ORDER_ADDITIVE],
MINUS: [' - ', Blockly.Dart.ORDER_ADDITIVE],
MULTIPLY: [' * ', Blockly.Dart.ORDER_MULTIPLICATIVE],
DIVIDE: [' / ', Blockly.Dart.ORDER_MULTIPLICATIVE],
POWER: [null, Blockly.Dart.ORDER_NONE] // Handle power separately.
};
var tuple = OPERATORS[block.getFieldValue('OP')];
var operator = tuple[0];
var order = tuple[1];
var argument0 = Blockly.Dart.valueToCode(this, 'A', order) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'B', order) || '0';
var argument0 = Blockly.Dart.valueToCode(block, 'A', order) || '0';
var argument1 = Blockly.Dart.valueToCode(block, 'B', order) || '0';
var code;
// Power in Dart requires a special case since it has no operator.
if (!operator) {
@@ -59,22 +66,14 @@ Blockly.Dart.math_arithmetic = function() {
return [code, order];
};
Blockly.Dart.math_arithmetic.OPERATORS = {
ADD: [' + ', Blockly.Dart.ORDER_ADDITIVE],
MINUS: [' - ', Blockly.Dart.ORDER_ADDITIVE],
MULTIPLY: [' * ', Blockly.Dart.ORDER_MULTIPLICATIVE],
DIVIDE: [' / ', Blockly.Dart.ORDER_MULTIPLICATIVE],
POWER: [null, Blockly.Dart.ORDER_NONE] // Handle power separately.
};
Blockly.Dart.math_single = function() {
Blockly.Dart['math_single'] = function(block) {
// Math operators with single operand.
var operator = this.getTitleValue('OP');
var operator = block.getFieldValue('OP');
var code;
var arg;
if (operator == 'NEG') {
// Negation is a special case given its different operator precedence.
arg = Blockly.Dart.valueToCode(this, 'NUM',
arg = Blockly.Dart.valueToCode(block, 'NUM',
Blockly.Dart.ORDER_UNARY_PREFIX) || '0';
if (arg[0] == '-') {
// --3 is not legal in Dart.
@@ -86,16 +85,17 @@ Blockly.Dart.math_single = function() {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
if (operator == 'ABS' || operator.substring(0, 5) == 'ROUND') {
arg = Blockly.Dart.valueToCode(this, 'NUM',
arg = Blockly.Dart.valueToCode(block, 'NUM',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '0';
} else if (operator == 'SIN' || operator == 'COS' || operator == 'TAN') {
arg = Blockly.Dart.valueToCode(this, 'NUM',
arg = Blockly.Dart.valueToCode(block, 'NUM',
Blockly.Dart.ORDER_MULTIPLICATIVE) || '0';
} else {
arg = Blockly.Dart.valueToCode(this, 'NUM',
arg = Blockly.Dart.valueToCode(block, 'NUM',
Blockly.Dart.ORDER_NONE) || '0';
}
// First, handle cases which generate values that don't need parentheses.
// First, handle cases which generate values that don't need parentheses
// wrapping the code.
switch (operator) {
case 'ABS':
code = arg + '.abs()';
@@ -134,7 +134,8 @@ Blockly.Dart.math_single = function() {
if (code) {
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
}
// Second, handle cases which generate values that may need parentheses.
// Second, handle cases which generate values that may need parentheses
// wrapping the code.
switch (operator) {
case 'LOG10':
code = 'Math.log(' + arg + ') / Math.log(10)';
@@ -154,66 +155,60 @@ Blockly.Dart.math_single = function() {
return [code, Blockly.Dart.ORDER_MULTIPLICATIVE];
};
Blockly.Dart.math_constant = function() {
Blockly.Dart['math_constant'] = function(block) {
// Constants: PI, E, the Golden Ratio, sqrt(2), 1/sqrt(2), INFINITY.
var constant = this.getTitleValue('CONSTANT');
var CONSTANTS = {
PI: ['Math.PI', Blockly.Dart.ORDER_UNARY_POSTFIX],
E: ['Math.E', Blockly.Dart.ORDER_UNARY_POSTFIX],
GOLDEN_RATIO: ['(1 + Math.sqrt(5)) / 2', Blockly.Dart.ORDER_MULTIPLICATIVE],
SQRT2: ['Math.SQRT2', Blockly.Dart.ORDER_UNARY_POSTFIX],
SQRT1_2: ['Math.SQRT1_2', Blockly.Dart.ORDER_UNARY_POSTFIX],
INFINITY: ['double.INFINITY', Blockly.Dart.ORDER_ATOMIC]
};
var constant = block.getFieldValue('CONSTANT');
if (constant != 'INFINITY') {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
}
return Blockly.Dart.math_constant.CONSTANTS[constant];
return CONSTANTS[constant];
};
Blockly.Dart.math_constant.CONSTANTS = {
PI: ['Math.PI', Blockly.Dart.ORDER_UNARY_POSTFIX],
E: ['Math.E', Blockly.Dart.ORDER_UNARY_POSTFIX],
GOLDEN_RATIO: ['(1 + Math.sqrt(5)) / 2', Blockly.Dart.ORDER_MULTIPLICATIVE],
SQRT2: ['Math.SQRT2', Blockly.Dart.ORDER_UNARY_POSTFIX],
SQRT1_2: ['Math.SQRT1_2', Blockly.Dart.ORDER_UNARY_POSTFIX],
INFINITY: ['double.INFINITY', Blockly.Dart.ORDER_ATOMIC]
};
Blockly.Dart.math_number_property = function() {
Blockly.Dart['math_number_property'] = function(block) {
// Check if a number is even, odd, prime, whole, positive, or negative
// or if it is divisible by certain number. Returns true or false.
var number_to_check = Blockly.Dart.valueToCode(this, 'NUMBER_TO_CHECK',
var number_to_check = Blockly.Dart.valueToCode(block, 'NUMBER_TO_CHECK',
Blockly.Dart.ORDER_MULTIPLICATIVE);
if (!number_to_check) {
return ['false', Blockly.Python.ORDER_ATOMIC];
}
var dropdown_property = this.getTitleValue('PROPERTY');
var dropdown_property = block.getFieldValue('PROPERTY');
var code;
if (dropdown_property == 'PRIME') {
// Prime is a special case as it is not a one-liner test.
if (!Blockly.Dart.definitions_['isPrime']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'isPrime', Blockly.Generator.NAME_TYPE);
Blockly.Dart.logic_prime= functionName;
var func = [];
func.push('bool ' + functionName + '(n) {');
func.push(' // http://en.wikipedia.org/wiki/Primality_test#Naive_methods');
func.push(' if (n == 2 || n == 3) {');
func.push(' return true;');
func.push(' }');
func.push(' // False if n is null, negative, is 1, or not whole.');
func.push(' // And false if n is divisible by 2 or 3.');
func.push(' if (n == null || n <= 1 || n % 1 != 0 || n % 2 == 0 ||' +
' n % 3 == 0) {');
func.push(' return false;');
func.push(' }');
func.push(' // Check all the numbers of form 6k +/- 1, up to sqrt(n).');
func.push(' for (var x = 6; x <= Math.sqrt(n) + 1; x += 6) {');
func.push(' if (n % (x - 1) == 0 || n % (x + 1) == 0) {');
func.push(' return false;');
func.push(' }');
func.push(' }');
func.push(' return true;');
func.push('}');
Blockly.Dart.definitions_['isPrime'] = func.join('\n');
}
code = Blockly.Dart.logic_prime + '(' + number_to_check + ')';
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.provideFunction_(
'math_isPrime',
[ 'bool ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ + '(n) {',
' // https://en.wikipedia.org/wiki/Primality_test#Naive_methods',
' if (n == 2 || n == 3) {',
' return true;',
' }',
' // False if n is null, negative, is 1, or not whole.',
' // And false if n is divisible by 2 or 3.',
' if (n == null || n <= 1 || n % 1 != 0 || n % 2 == 0 ||' +
' n % 3 == 0) {',
' return false;',
' }',
' // Check all the numbers of form 6k +/- 1, up to sqrt(n).',
' for (var x = 6; x <= Math.sqrt(n) + 1; x += 6) {',
' if (n % (x - 1) == 0 || n % (x + 1) == 0) {',
' return false;',
' }',
' }',
' return true;',
'}']);
code = functionName + '(' + number_to_check + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
}
switch (dropdown_property) {
@@ -233,7 +228,7 @@ Blockly.Dart.math_number_property = function() {
code = number_to_check + ' < 0';
break;
case 'DIVISIBLE_BY':
var divisor = Blockly.Dart.valueToCode(this, 'DIVISOR',
var divisor = Blockly.Dart.valueToCode(block, 'DIVISOR',
Blockly.Dart.ORDER_MULTIPLICATIVE);
if (!divisor) {
return ['false', Blockly.Python.ORDER_ATOMIC];
@@ -244,215 +239,180 @@ Blockly.Dart.math_number_property = function() {
return [code, Blockly.Dart.ORDER_EQUALITY];
};
Blockly.Dart.math_change = function() {
Blockly.Dart['math_change'] = function(block) {
// Add to a variable in place.
var argument0 = Blockly.Dart.valueToCode(this, 'DELTA',
var argument0 = Blockly.Dart.valueToCode(block, 'DELTA',
Blockly.Dart.ORDER_ADDITIVE) || '0';
var varName = Blockly.Dart.variableDB_.getName(this.getTitleValue('VAR'),
var varName = Blockly.Dart.variableDB_.getName(block.getFieldValue('VAR'),
Blockly.Variables.NAME_TYPE);
return varName + ' = (' + varName + ' is num ? ' + varName + ' : 0) + ' +
argument0 + ';\n';
};
// Rounding functions have a single operand.
Blockly.Dart.math_round = Blockly.Dart.math_single;
Blockly.Dart['math_round'] = Blockly.Dart['math_single'];
// Trigonometry functions have a single operand.
Blockly.Dart.math_trig = Blockly.Dart.math_single;
Blockly.Dart['math_trig'] = Blockly.Dart['math_single'];
Blockly.Dart.math_on_list = function() {
Blockly.Dart['math_on_list'] = function(block) {
// Math functions for lists.
var func = this.getTitleValue('OP');
var list = Blockly.Dart.valueToCode(this, 'LIST',
var func = block.getFieldValue('OP');
var list = Blockly.Dart.valueToCode(block, 'LIST',
Blockly.Dart.ORDER_NONE) || '[]';
var code;
switch (func) {
case 'SUM':
if (!Blockly.Dart.definitions_['math_sum']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_sum', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_sum = functionName;
var func = [];
func.push('num ' + functionName + '(List myList) {');
func.push(' num sumVal = 0;');
func.push(' myList.forEach((num entry) {sumVal += entry;});');
func.push(' return sumVal;');
func.push('}');
Blockly.Dart.definitions_['math_sum'] = func.join('\n');
}
code = Blockly.Dart.math_on_list.math_sum + '(' + list + ')';
var functionName = Blockly.Dart.provideFunction_(
'math_sum',
[ 'num ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List myList) {',
' num sumVal = 0;',
' myList.forEach((num entry) {sumVal += entry;});',
' return sumVal;',
'}']);
code = functionName + '(' + list + ')';
break;
case 'MIN':
if (!Blockly.Dart.definitions_['math_min']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_min', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_min = functionName;
var func = [];
func.push('num ' + functionName + '(List myList) {');
func.push(' if (myList.isEmpty) return null;');
func.push(' num minVal = myList[0];');
func.push(' myList.forEach((num entry) ' +
'{minVal = Math.min(minVal, entry);});');
func.push(' return minVal;');
func.push('}');
Blockly.Dart.definitions_['math_min'] = func.join('\n');
}
code = Blockly.Dart.math_on_list.math_min + '(' + list + ')';
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.provideFunction_(
'math_min',
[ 'num ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List myList) {',
' if (myList.isEmpty) return null;',
' num minVal = myList[0];',
' myList.forEach((num entry) ' +
'{minVal = Math.min(minVal, entry);});',
' return minVal;',
'}']);
code = functionName + '(' + list + ')';
break;
case 'MAX':
if (!Blockly.Dart.definitions_['math_max']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_max', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_max = functionName;
var func = [];
func.push('num ' + functionName + '(List myList) {');
func.push(' if (myList.isEmpty) return null;');
func.push(' num maxVal = myList[0];');
func.push(' myList.forEach((num entry) ' +
'{maxVal = Math.max(maxVal, entry);});');
func.push(' return maxVal;');
func.push('}');
Blockly.Dart.definitions_['math_max'] = func.join('\n');
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
}
code = Blockly.Dart.math_on_list.math_max + '(' + list + ')';
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.provideFunction_(
'math_max',
[ 'num ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List myList) {',
' if (myList.isEmpty) return null;',
' num maxVal = myList[0];',
' myList.forEach((num entry) ' +
'{maxVal = Math.max(maxVal, entry);});',
' return maxVal;',
'}']);
code = functionName + '(' + list + ')';
break;
case 'AVERAGE':
// This operation exclude null and values that are not int or float:
// math_mean([null,null,"aString",1,9]) == 5.0.
if (!Blockly.Dart.definitions_['math_average']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_average', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_average = functionName;
var func = [];
func.push('num ' + functionName + '(List myList) {');
func.push(' // First filter list for numbers only.');
func.push(' List localList = new List.from(myList);');
func.push(' localList.removeMatching((a) => a is! num);');
func.push(' if (localList.isEmpty) return null;');
func.push(' num sumVal = 0;');
func.push(' localList.forEach((num entry) {sumVal += entry;});');
func.push(' return sumVal / localList.length;');
func.push('}');
Blockly.Dart.definitions_['math_average'] = func.join('\n');
}
code = Blockly.Dart.math_on_list.math_average + '(' + list + ')';
var functionName = Blockly.Dart.provideFunction_(
'math_average',
[ 'num ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List myList) {',
' // First filter list for numbers only.',
' List localList = new List.from(myList);',
' localList.removeMatching((a) => a is! num);',
' if (localList.isEmpty) return null;',
' num sumVal = 0;',
' localList.forEach((num entry) {sumVal += entry;});',
' return sumVal / localList.length;',
'}']);
code = functionName + '(' + list + ')';
break;
case 'MEDIAN':
if (!Blockly.Dart.definitions_['math_median']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_median', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_median = functionName;
var func = [];
func.push('num ' + functionName + '(List myList) {');
func.push(' // First filter list for numbers only, then sort, ' +
'then return middle value');
func.push(' // or the average of two middle values if list has an ' +
'even number of elements.');
func.push(' List localList = new List.from(myList);');
func.push(' localList.removeMatching((a) => a is! num);');
func.push(' if (localList.isEmpty) return null;');
func.push(' localList.sort((a, b) => (a - b));');
func.push(' int index = localList.length ~/ 2;');
func.push(' if (localList.length % 2 == 1) {');
func.push(' return localList[index];');
func.push(' } else {');
func.push(' return (localList[index - 1] + localList[index]) / 2;');
func.push(' }');
func.push('}');
Blockly.Dart.definitions_['math_median'] = func.join('\n');
}
code = Blockly.Dart.math_on_list.math_median + '(' + list + ')';
var functionName = Blockly.Dart.provideFunction_(
'math_median',
[ 'num ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List myList) {',
' // First filter list for numbers only, then sort, ' +
'then return middle value',
' // or the average of two middle values if list has an ' +
'even number of elements.',
' List localList = new List.from(myList);',
' localList.removeMatching((a) => a is! num);',
' if (localList.isEmpty) return null;',
' localList.sort((a, b) => (a - b));',
' int index = localList.length ~/ 2;',
' if (localList.length % 2 == 1) {',
' return localList[index];',
' } else {',
' return (localList[index - 1] + localList[index]) / 2;',
' }',
'}']);
code = functionName + '(' + list + ')';
break;
case 'MODE':
if (!Blockly.Dart.definitions_['math_modes']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_modes', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_modes = functionName;
// As a list of numbers can contain more than one mode,
// the returned result is provided as an array.
// Mode of [3, 'x', 'x', 1, 1, 2, '3'] -> ['x', 1].
var func = [];
func.push('List ' + functionName + '(values) {');
func.push(' List modes = [];');
func.push(' List counts = [];');
func.push(' int maxCount = 0;');
func.push(' for (int i = 0; i < values.length; i++) {');
func.push(' var value = values[i];');
func.push(' bool found = false;');
func.push(' int thisCount;');
func.push(' for (int j = 0; j < counts.length; j++) {');
func.push(' if (counts[j][0] == value) {');
func.push(' thisCount = ++counts[j][1];');
func.push(' found = true;');
func.push(' break;');
func.push(' }');
func.push(' }');
func.push(' if (!found) {');
func.push(' counts.add([value, 1]);');
func.push(' thisCount = 1;');
func.push(' }');
func.push(' maxCount = Math.max(thisCount, maxCount);');
func.push(' }');
func.push(' for (int j = 0; j < counts.length; j++) {');
func.push(' if (counts[j][1] == maxCount) {');
func.push(' modes.add(counts[j][0]);');
func.push(' }');
func.push(' }');
func.push(' return modes;');
func.push('}');
Blockly.Dart.definitions_['math_modes'] = func.join('\n');
}
code = Blockly.Dart.math_on_list.math_modes + '(' + list + ')';
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
// As a list of numbers can contain more than one mode,
// the returned result is provided as an array.
// Mode of [3, 'x', 'x', 1, 1, 2, '3'] -> ['x', 1].
var functionName = Blockly.Dart.provideFunction_(
'math_modes',
[ 'List ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List values) {',
' List modes = [];',
' List counts = [];',
' int maxCount = 0;',
' for (int i = 0; i < values.length; i++) {',
' var value = values[i];',
' bool found = false;',
' int thisCount;',
' for (int j = 0; j < counts.length; j++) {',
' if (counts[j][0] == value) {',
' thisCount = ++counts[j][1];',
' found = true;',
' break;',
' }',
' }',
' if (!found) {',
' counts.add([value, 1]);',
' thisCount = 1;',
' }',
' maxCount = Math.max(thisCount, maxCount);',
' }',
' for (int j = 0; j < counts.length; j++) {',
' if (counts[j][1] == maxCount) {',
' modes.add(counts[j][0]);',
' }',
' }',
' return modes;',
'}']);
code = functionName + '(' + list + ')';
break;
case 'STD_DEV':
if (!Blockly.Dart.definitions_['math_standard_deviation']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_standard_deviation', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_standard_deviation = functionName;
var func = [];
func.push('num ' + functionName + '(List myList) {');
func.push(' // First filter list for numbers only.');
func.push(' List numbers = new List.from(myList);');
func.push(' numbers.removeMatching((a) => a is! num);');
func.push(' if (numbers.isEmpty) return null;');
func.push(' num n = numbers.length;');
func.push(' num sum = 0;');
func.push(' numbers.forEach((x) => sum += x);');
func.push(' num mean = sum / n;');
func.push(' num sumSquare = 0;');
func.push(' numbers.forEach((x) => sumSquare += ' +
'Math.pow(x - mean, 2));');
func.push(' return Math.sqrt(sumSquare / n);');
func.push('}');
Blockly.Dart.definitions_['math_standard_deviation'] = func.join('\n');
}
code = Blockly.Dart.math_on_list.math_standard_deviation +
'(' + list + ')';
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.provideFunction_(
'math_standard_deviation',
[ 'num ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List myList) {',
' // First filter list for numbers only.',
' List numbers = new List.from(myList);',
' numbers.removeMatching((a) => a is! num);',
' if (numbers.isEmpty) return null;',
' num n = numbers.length;',
' num sum = 0;',
' numbers.forEach((x) => sum += x);',
' num mean = sum / n;',
' num sumSquare = 0;',
' numbers.forEach((x) => sumSquare += ' +
'Math.pow(x - mean, 2));',
' return Math.sqrt(sumSquare / n);',
'}']);
code = functionName + '(' + list + ')';
break;
case 'RANDOM':
if (!Blockly.Dart.definitions_['math_random_item']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_random_item', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_on_list.math_random_item = functionName;
var func = [];
func.push('dynamic ' + functionName + '(List myList) {');
func.push(' int x = new Math.Random().nextInt(myList.length);');
func.push(' return myList[x];');
func.push('}');
Blockly.Dart.definitions_['math_random_item'] = func.join('\n');
}
code = Blockly.Dart.math_on_list.math_random_item + '(' + list + ')';
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.provideFunction_(
'math_random_item',
[ 'dynamic ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ +
'(List myList) {',
' int x = new Math.Random().nextInt(myList.length);',
' return myList[x];',
'}']);
code = functionName + '(' + list + ')';
break;
default:
throw 'Unknown operator: ' + func;
@@ -460,57 +420,57 @@ Blockly.Dart.math_on_list = function() {
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.math_modulo = function() {
Blockly.Dart['math_modulo'] = function(block) {
// Remainder computation.
var argument0 = Blockly.Dart.valueToCode(this, 'DIVIDEND',
var argument0 = Blockly.Dart.valueToCode(block, 'DIVIDEND',
Blockly.Dart.ORDER_MULTIPLICATIVE) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'DIVISOR',
var argument1 = Blockly.Dart.valueToCode(block, 'DIVISOR',
Blockly.Dart.ORDER_MULTIPLICATIVE) || '0';
var code = argument0 + ' % ' + argument1;
return [code, Blockly.Dart.ORDER_MULTIPLICATIVE];
};
Blockly.Dart.math_constrain = function() {
Blockly.Dart['math_constrain'] = function(block) {
// Constrain a number between two limits.
var argument0 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var argument0 = Blockly.Dart.valueToCode(block, 'VALUE',
Blockly.Dart.ORDER_NONE) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'LOW',
var argument1 = Blockly.Dart.valueToCode(block, 'LOW',
Blockly.Dart.ORDER_NONE) || '0';
var argument2 = Blockly.Dart.valueToCode(this, 'HIGH',
var argument2 = Blockly.Dart.valueToCode(block, 'HIGH',
Blockly.Dart.ORDER_NONE) || 'double.INFINITY';
var code = 'Math.min(Math.max(' + argument0 + ', ' + argument1 + '), ' +
argument2 + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.math_random_int = function() {
Blockly.Dart['math_random_int'] = function(block) {
// Random integer between [X] and [Y].
var argument0 = Blockly.Dart.valueToCode(this, 'FROM',
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var argument0 = Blockly.Dart.valueToCode(block, 'FROM',
Blockly.Dart.ORDER_NONE) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'TO',
var argument1 = Blockly.Dart.valueToCode(block, 'TO',
Blockly.Dart.ORDER_NONE) || '0';
if (!Blockly.Dart.definitions_['math_random_int']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'math_random_int', Blockly.Generator.NAME_TYPE);
Blockly.Dart.math_random_int.random_function = functionName;
var func = [];
func.push('int ' + functionName + '(num a, num b) {');
func.push(' if (a > b) {');
func.push(' // Swap a and b to ensure a is smaller.');
func.push(' num c = a;');
func.push(' a = b;');
func.push(' b = c;');
func.push(' }');
func.push(' return new Math.Random().nextInt(b - a + 1) + a;');
func.push('}');
Blockly.Dart.definitions_['math_random_int'] = func.join('\n');
}
var code = Blockly.Dart.math_random_int.random_function +
'(' + argument0 + ', ' + argument1 + ')';
var functionName = Blockly.Dart.provideFunction_(
'math_random_int',
[ 'int ' + Blockly.Dart.FUNCTION_NAME_PLACEHOLDER_ + '(num a, num b) {',
' if (a > b) {',
' // Swap a and b to ensure a is smaller.',
' num c = a;',
' a = b;',
' b = c;',
' }',
' return new Math.Random().nextInt(b - a + 1) + a;',
'}']);
var code = functionName + '(' + argument0 + ', ' + argument1 + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.math_random_float = function() {
Blockly.Dart['math_random_float'] = function(block) {
// Random fraction between 0 and 1.
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
return ['new Math.Random().nextDouble()', Blockly.Dart.ORDER_UNARY_POSTFIX];
};