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ellen.spertus
2014-01-13 03:00:02 -08:00
parent 0b5cc3cf18
commit ce63f70b37
14 changed files with 1980 additions and 17 deletions
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119
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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for colour blocks.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Dart.colour');
goog.require('Blockly.Dart');
Blockly.Dart.addReservedWords('Math');
Blockly.Dart.colour_picker = function() {
// Colour picker.
var code = '\'' + this.getTitleValue('COLOUR') + '\'';
return [code, Blockly.Dart.ORDER_ATOMIC];
};
Blockly.Dart.colour_rgb = function() {
// Compose a colour from RGB components.
var red = Blockly.Dart.valueToCode(this, 'RED',
Blockly.Dart.ORDER_NONE) || 0;
var green = Blockly.Dart.valueToCode(this, 'GREEN',
Blockly.Dart.ORDER_NONE) || 0;
var blue = Blockly.Dart.valueToCode(this, 'BLUE',
Blockly.Dart.ORDER_NONE) || 0;
if (!Blockly.Dart.definitions_['colour_rgb']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'colour_rgb', Blockly.Generator.NAME_TYPE);
Blockly.Dart.colour_rgb.functionName = functionName;
var func = [];
func.push('String ' + functionName + '(num r, num g, num b) {');
func.push(' num rn = (Math.max(Math.min(r, 1), 0) * 255).round();');
func.push(' String rs = rn.toInt().toRadixString(16);');
func.push(' rs = \'0$rs\';');
func.push(' rs = rs.substring(rs.length - 2);');
func.push(' num gn = (Math.max(Math.min(g, 1), 0) * 255).round();');
func.push(' String gs = gn.toInt().toRadixString(16);');
func.push(' gs = \'0$gs\';');
func.push(' gs = gs.substring(gs.length - 2);');
func.push(' num bn = (Math.max(Math.min(b, 1), 0) * 255).round();');
func.push(' String bs = bn.toInt().toRadixString(16);');
func.push(' bs = \'0$bs\';');
func.push(' bs = bs.substring(bs.length - 2);');
func.push(' return \'#$rs$gs$bs\';');
func.push('}');
Blockly.Dart.definitions_['colour_rgb'] = func.join('\n');
}
var code = Blockly.Dart.colour_rgb.functionName +
'(' + red + ', ' + green + ', ' + blue + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.colour_blend = function() {
// Blend two colours together.
var c1 = Blockly.Dart.valueToCode(this, 'COLOUR1',
Blockly.Dart.ORDER_NONE) || '\'#000000\'';
var c2 = Blockly.Dart.valueToCode(this, 'COLOUR2',
Blockly.Dart.ORDER_NONE) || '\'#000000\'';
var ratio = Blockly.Dart.valueToCode(this, 'RATIO',
Blockly.Dart.ORDER_NONE) || 0.5;
if (!Blockly.Dart.definitions_['colour_blend']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'colour_blend', Blockly.Generator.NAME_TYPE);
Blockly.Dart.colour_blend.functionName = functionName;
var func = [];
func.push('String ' + functionName + '(String c1, String c2, num ratio) {');
func.push(' ratio = Math.max(Math.min(ratio, 1), 0);');
func.push(' int r1 = int.parse(\'0x${c1.substring(1, 3)}\');');
func.push(' int g1 = int.parse(\'0x${c1.substring(3, 5)}\');');
func.push(' int b1 = int.parse(\'0x${c1.substring(5, 7)}\');');
func.push(' int r2 = int.parse(\'0x${c2.substring(1, 3)}\');');
func.push(' int g2 = int.parse(\'0x${c2.substring(3, 5)}\');');
func.push(' int b2 = int.parse(\'0x${c2.substring(5, 7)}\');');
func.push(' num rn = (r1 * (1 - ratio) + r2 * ratio).round();');
func.push(' String rs = rn.toInt().toRadixString(16);');
func.push(' num gn = (g1 * (1 - ratio) + g2 * ratio).round();');
func.push(' String gs = gn.toInt().toRadixString(16);');
func.push(' num bn = (b1 * (1 - ratio) + b2 * ratio).round();');
func.push(' String bs = bn.toInt().toRadixString(16);');
func.push(' rs = \'0$rs\';');
func.push(' rs = rs.substring(rs.length - 2);');
func.push(' gs = \'0$gs\';');
func.push(' gs = gs.substring(gs.length - 2);');
func.push(' bs = \'0$bs\';');
func.push(' bs = bs.substring(bs.length - 2);');
func.push(' return \'#$rs$gs$bs\';');
func.push('}');
Blockly.Dart.definitions_['colour_blend'] = func.join('\n');
}
var code = Blockly.Dart.colour_blend.functionName +
'(' + c1 + ', ' + c2 + ', ' + ratio + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};

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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for list blocks.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Dart.lists');
goog.require('Blockly.Dart');
Blockly.Dart.addReservedWords('Math');
Blockly.Dart.lists_create_empty = function() {
// Create an empty list.
return ['[]', Blockly.Dart.ORDER_ATOMIC];
};
Blockly.Dart.lists_create_with = function() {
// Create a list with any number of elements of any type.
var code = new Array(this.itemCount_);
for (var n = 0; n < this.itemCount_; n++) {
code[n] = Blockly.Dart.valueToCode(this, 'ADD' + n,
Blockly.Dart.ORDER_NONE) || 'null';
}
var code = '[' + code.join(', ') + ']';
return [code, Blockly.Dart.ORDER_ATOMIC];
};
Blockly.Dart.lists_repeat = function() {
// Create a list with one element repeated.
if (!Blockly.Dart.definitions_['lists_repeat']) {
// Function adapted from Closure's goog.array.repeat.
var functionName = Blockly.Dart.variableDB_.getDistinctName('lists_repeat',
Blockly.Generator.NAME_TYPE);
Blockly.Dart.lists_repeat.repeat = functionName;
var func = [];
func.push('List ' + functionName + '(value, n) {');
func.push(' var array = new List(n);');
func.push(' for (int i = 0; i < n; i++) {');
func.push(' array[i] = value;');
func.push(' }');
func.push(' return array;');
func.push('}');
Blockly.Dart.definitions_['lists_repeat'] = func.join('\n');
}
var argument0 = Blockly.Dart.valueToCode(this, 'ITEM',
Blockly.Dart.ORDER_NONE) || 'null';
var argument1 = Blockly.Dart.valueToCode(this, 'NUM',
Blockly.Dart.ORDER_NONE) || '0';
var code = Blockly.Dart.lists_repeat.repeat +
'(' + argument0 + ', ' + argument1 + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.lists_length = function() {
// List length.
var argument0 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '[]';
return [argument0 + '.length', Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.lists_isEmpty = function() {
// Is the list empty?
var argument0 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '[]';
return [argument0 + '.isEmpty', Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.lists_indexOf = function() {
// Find an item in the list.
var operator = this.getTitleValue('END') == 'FIRST' ?
'indexOf' : 'lastIndexOf';
var argument0 = Blockly.Dart.valueToCode(this, 'FIND',
Blockly.Dart.ORDER_NONE) || '\'\'';
var argument1 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '[]';
var code = argument1 + '.' + operator + '(' + argument0 + ') + 1';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.lists_getIndex = function() {
// Get element at index.
// Note: Until January 2013 this block did not have MODE or WHERE inputs.
var mode = this.getTitleValue('MODE') || 'GET';
var where = this.getTitleValue('WHERE') || 'FROM_START';
var at = Blockly.Dart.valueToCode(this, 'AT',
Blockly.Dart.ORDER_UNARY_PREFIX) || '1';
var list = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '[]';
if (where == 'FIRST') {
if (mode == 'GET') {
var code = list + '.first';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'GET_REMOVE') {
var code = list + '.removeAt(0)';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'REMOVE') {
return list + '.removeAt(0);\n';
}
} else if (where == 'LAST') {
if (mode == 'GET') {
var code = list + '.last';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'GET_REMOVE') {
var code = list + '.removeLast()';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'REMOVE') {
return list + '.removeLast();\n';
}
} else if (where == 'FROM_START') {
// Blockly uses one-based indicies.
if (at.match(/^-?\d+$/)) {
// If the index is a naked number, decrement it right now.
at = parseInt(at, 10) - 1;
} else {
// If the index is dynamic, decrement it in code.
at += ' - 1';
}
if (mode == 'GET') {
var code = list + '[' + at + ']';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'GET_REMOVE') {
var code = list + '.removeAt(' + at + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'REMOVE') {
return list + '.removeAt(' + at + ');\n';
}
} else if (where == 'FROM_END') {
if (mode == 'GET') {
if (!Blockly.Dart.definitions_['lists_get_from_end']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'lists_get_from_end', Blockly.Generator.NAME_TYPE);
Blockly.Dart.lists_getIndex.lists_get_from_end = functionName;
var func = [];
func.push('dynamic ' + functionName + '(List myList, num x) {');
func.push(' x = myList.length - x;');
func.push(' return myList.removeAt(x);');
func.push('}');
Blockly.Dart.definitions_['lists_get_from_end'] = func.join('\n');
}
code = Blockly.Dart.lists_getIndex.lists_get_from_end +
'(' + list + ', ' + at + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'GET_REMOVE' || mode == 'REMOVE') {
if (!Blockly.Dart.definitions_['lists_remove_from_end']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'lists_remove_from_end', Blockly.Generator.NAME_TYPE);
Blockly.Dart.lists_getIndex.lists_remove_from_end = functionName;
var func = [];
func.push('dynamic ' + functionName + '(List myList, num x) {');
func.push(' x = myList.length - x;');
func.push(' return myList.removeAt(x);');
func.push('}');
Blockly.Dart.definitions_['lists_remove_from_end'] = func.join('\n');
}
code = Blockly.Dart.lists_getIndex.lists_remove_from_end +
'(' + list + ', ' + at + ')';
if (mode == 'GET_REMOVE') {
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'REMOVE') {
return code + ';\n';
}
}
} else if (where == 'RANDOM') {
if (!Blockly.Dart.definitions_['lists_get_random_item']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'lists_get_random_item', Blockly.Generator.NAME_TYPE);
Blockly.Dart.lists_getIndex.random = functionName;
var func = [];
func.push('dynamic ' + functionName + '(List myList, bool remove) {');
func.push(' int x = new Math.Random().nextInt(myList.length);');
func.push(' if (remove) {');
func.push(' return myList.removeAt(x);');
func.push(' } else {');
func.push(' return myList[x];');
func.push(' }');
func.push('}');
Blockly.Dart.definitions_['lists_get_random_item'] = func.join('\n');
}
code = Blockly.Dart.lists_getIndex.random +
'(' + list + ', ' + (mode != 'GET') + ')';
if (mode == 'GET' || mode == 'GET_REMOVE') {
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else if (mode == 'REMOVE') {
return code + ';\n';
}
}
throw 'Unhandled combination (lists_getIndex).';
};
Blockly.Dart.lists_setIndex = function() {
// Set element at index.
// Note: Until February 2013 this block did not have MODE or WHERE inputs.
var list = Blockly.Dart.valueToCode(this, 'LIST',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '[]';
var mode = this.getTitleValue('MODE') || 'GET';
var where = this.getTitleValue('WHERE') || 'FROM_START';
var at = Blockly.Dart.valueToCode(this, 'AT',
Blockly.Dart.ORDER_ADDITIVE) || '1';
var value = Blockly.Dart.valueToCode(this, 'TO',
Blockly.Dart.ORDER_ASSIGNMENT) || 'null';
// Cache non-trivial values to variables to prevent repeated look-ups.
// Closure, which accesses and modifies 'list'.
function cacheList() {
if (list.match(/^\w+$/)) {
return '';
}
var listVar = Blockly.Dart.variableDB_.getDistinctName(
'tmp_list', Blockly.Variables.NAME_TYPE);
var code = 'List ' + listVar + ' = ' + list + ';\n';
list = listVar;
return code;
}
if (where == 'FIRST') {
if (mode == 'SET') {
return list + '[0] = ' + value + ';\n';
} else if (mode == 'INSERT') {
return list + '.insertRange(0, 1, ' + value + ');\n';
}
} else if (where == 'LAST') {
if (mode == 'SET') {
var code = cacheList();
code += list + '[' + list + '.length - 1] = ' + value + ';\n';
return code;
} else if (mode == 'INSERT') {
return list + '.addLast(' + value + ');\n';
}
} else if (where == 'FROM_START') {
// Blockly uses one-based indicies.
if (at.match(/^\d+$/)) {
// If the index is a naked number, decrement it right now.
at = parseInt(at, 10) - 1;
} else {
// If the index is dynamic, decrement it in code.
at += ' - 1';
}
if (mode == 'SET') {
return list + '[' + at + '] = ' + value + ';\n';
} else if (mode == 'INSERT') {
return list + '.insertRange(' + at + ', 1, ' + value + ');\n';
}
} else if (where == 'FROM_END') {
var code = cacheList();
if (mode == 'SET') {
code += list + '[' + list + '.length - ' + at + '] = ' + value + ';\n';
return code;
} else if (mode == 'INSERT') {
code += list + '.insertRange(' + list + '.length - ' + at + ', 1, ' +
value + ');\n';
return code;
}
} else if (where == 'RANDOM') {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var code = cacheList();
var xVar = Blockly.Dart.variableDB_.getDistinctName(
'tmp_x', Blockly.Variables.NAME_TYPE);
code += 'int ' + xVar + ' = new Math.Random().nextInt(' + list + '.length);';
if (mode == 'SET') {
code += list + '[' + xVar + '] = ' + value + ';\n';
return code;
} else if (mode == 'INSERT') {
code += list + '.insertRange(' + xVar + ', 1, ' + value + ');\n';
return code;
}
}
throw 'Unhandled combination (lists_setIndex).';
};

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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for logic blocks.
* @author q.neutron@gmail.com (Quynh Neutron)
*/
'use strict';
goog.provide('Blockly.Dart.logic');
goog.require('Blockly.Dart');
Blockly.Dart.logic_compare = function() {
// Comparison operator.
var mode = this.getTitleValue('OP');
var operator = Blockly.Dart.logic_compare.OPERATORS[mode];
var order = (operator == '==' || operator == '!=') ?
Blockly.Dart.ORDER_EQUALITY : Blockly.Dart.ORDER_RELATIONAL;
var argument0 = Blockly.Dart.valueToCode(this, 'A', order) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'B', order) || '0';
var code = argument0 + ' ' + operator + ' ' + argument1;
return [code, order];
};
Blockly.Dart.logic_compare.OPERATORS = {
EQ: '==',
NEQ: '!=',
LT: '<',
LTE: '<=',
GT: '>',
GTE: '>='
};
Blockly.Dart.logic_operation = function() {
// Operations 'and', 'or'.
var operator = (this.getTitleValue('OP') == 'AND') ? '&&' : '||';
var order = (operator == '&&') ? Blockly.Dart.ORDER_LOGICAL_AND :
Blockly.Dart.ORDER_LOGICAL_OR;
var argument0 = Blockly.Dart.valueToCode(this, 'A', order) || 'false';
var argument1 = Blockly.Dart.valueToCode(this, 'B', order) || 'false';
var code = argument0 + ' ' + operator + ' ' + argument1;
return [code, order];
};
Blockly.Dart.logic_negate = function() {
// Negation.
var order = Blockly.Dart.ORDER_UNARY_PREFIX;
var argument0 = Blockly.Dart.valueToCode(this, 'BOOL', order) || 'false';
var code = '!' + argument0;
return [code, order];
};
Blockly.Dart.logic_boolean = function() {
// Boolean values true and false.
var code = (this.getTitleValue('BOOL') == 'TRUE') ? 'true' : 'false';
return [code, Blockly.Dart.ORDER_ATOMIC];
};
Blockly.Dart.logic_null = function() {
// Null data type.
return ['null', Blockly.Dart.ORDER_ATOMIC];
};
Blockly.Dart.logic_ternary = function() {
// Ternary operator.
var value_if = Blockly.Dart.valueToCode(this, 'IF',
Blockly.Dart.ORDER_CONDITIONAL) || 'false';
var value_then = Blockly.Dart.valueToCode(this, 'THEN',
Blockly.Dart.ORDER_CONDITIONAL) || 'null';
var value_else = Blockly.Dart.valueToCode(this, 'ELSE',
Blockly.Dart.ORDER_CONDITIONAL) || 'null';
var code = value_if + ' ? ' + value_then + ' : ' + value_else
return [code, Blockly.Dart.ORDER_CONDITIONAL];
};

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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for control blocks.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Dart.control');
goog.require('Blockly.Dart');
Blockly.Dart.controls_if = function() {
// If/elseif/else condition.
var n = 0;
var argument = Blockly.Dart.valueToCode(this, 'IF' + n,
Blockly.Dart.ORDER_NONE) || 'false';
var branch = Blockly.Dart.statementToCode(this, 'DO' + n);
var code = 'if (' + argument + ') {\n' + branch + '}';
for (n = 1; n <= this.elseifCount_; n++) {
argument = Blockly.Dart.valueToCode(this, 'IF' + n,
Blockly.Dart.ORDER_NONE) || 'false';
branch = Blockly.Dart.statementToCode(this, 'DO' + n);
code += ' else if (' + argument + ') {\n' + branch + '}';
}
if (this.elseCount_) {
branch = Blockly.Dart.statementToCode(this, 'ELSE');
code += ' else {\n' + branch + '}';
}
return code + '\n';
};
Blockly.Dart.controls_repeat = function() {
// Repeat n times.
var repeats = Number(this.getTitleValue('TIMES'));
var branch = Blockly.Dart.statementToCode(this, 'DO');
if (Blockly.Dart.INFINITE_LOOP_TRAP) {
branch = Blockly.Dart.INFINITE_LOOP_TRAP.replace(/%1/g,
'\'' + this.id + '\'') + branch;
}
var loopVar = Blockly.Dart.variableDB_.getDistinctName(
'count', Blockly.Variables.NAME_TYPE);
var code = 'for (int ' + loopVar + ' = 0; ' +
loopVar + ' < ' + repeats + '; ' +
loopVar + '++) {\n' +
branch + '}\n';
return code;
};
Blockly.Dart.controls_whileUntil = function() {
// Do while/until loop.
var argument0 = Blockly.Dart.valueToCode(this, 'BOOL',
Blockly.Dart.ORDER_NONE) || 'false';
var branch = Blockly.Dart.statementToCode(this, 'DO');
if (Blockly.Dart.INFINITE_LOOP_TRAP) {
branch = Blockly.Dart.INFINITE_LOOP_TRAP.replace(/%1/g,
'\'' + this.id + '\'') + branch;
}
if (this.getTitleValue('MODE') == 'UNTIL') {
if (!argument0.match(/^\w+$/)) {
argument0 = '(' + argument0 + ')';
}
argument0 = '!' + argument0;
}
return 'while (' + argument0 + ') {\n' + branch + '}\n';
};
Blockly.Dart.controls_for = function() {
// For loop.
var variable0 = Blockly.Dart.variableDB_.getName(
this.getTitleValue('VAR'), Blockly.Variables.NAME_TYPE);
var argument0 = Blockly.Dart.valueToCode(this, 'FROM',
Blockly.Dart.ORDER_ASSIGNMENT) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'TO',
Blockly.Dart.ORDER_ASSIGNMENT) || '0';
var branch = Blockly.Dart.statementToCode(this, 'DO');
if (Blockly.Dart.INFINITE_LOOP_TRAP) {
branch = Blockly.Dart.INFINITE_LOOP_TRAP.replace(/%1/g,
'\'' + this.id + '\'') + branch;
}
var code;
if (argument0.match(/^-?\d+(\.\d+)?$/) &&
argument1.match(/^-?\d+(\.\d+)?$/)) {
// Both arguments are simple numbers.
var up = parseFloat(argument0) <= parseFloat(argument1);
code = 'for (num ' + variable0 + ' = ' + argument0 + '; ' +
variable0 + (up ? ' <= ' : ' >= ') + argument1 + '; ' +
variable0 + (up ? '++' : '--') + ') {\n' +
branch + '}\n';
} else {
code = '';
// Cache non-trivial values to variables to prevent repeated look-ups.
var startVar = argument0;
if (!argument0.match(/^\w+$/) && !argument0.match(/^-?\d+(\.\d+)?$/)) {
var startVar = Blockly.Dart.variableDB_.getDistinctName(
variable0 + '_start', Blockly.Variables.NAME_TYPE);
code += 'var ' + startVar + ' = ' + argument0 + ';\n';
}
var endVar = argument1;
if (!argument1.match(/^\w+$/) && !argument1.match(/^-?\d+(\.\d+)?$/)) {
var endVar = Blockly.Dart.variableDB_.getDistinctName(
variable0 + '_end', Blockly.Variables.NAME_TYPE);
code += 'var ' + endVar + ' = ' + argument1 + ';\n';
}
code += 'for (' + variable0 + ' = ' + startVar + ';\n' +
' (' + startVar + ' <= ' + endVar + ') ? ' +
variable0 + ' <= ' + endVar + ' : ' +
variable0 + ' >= ' + endVar + ';\n' +
' ' + variable0 + ' += (' + startVar + ' <= ' + endVar +
') ? 1 : -1) {\n' +
branch + '}\n';
}
return code;
};
Blockly.Dart.controls_forEach = function() {
// For each loop.
var variable0 = Blockly.Dart.variableDB_.getName(
this.getTitleValue('VAR'), Blockly.Variables.NAME_TYPE);
var argument0 = Blockly.Dart.valueToCode(this, 'LIST',
Blockly.Dart.ORDER_ASSIGNMENT) || '[]';
var branch = Blockly.Dart.statementToCode(this, 'DO');
if (Blockly.Dart.INFINITE_LOOP_TRAP) {
branch = Blockly.Dart.INFINITE_LOOP_TRAP.replace(/%1/g,
'\'' + this.id + '\'') + branch;
}
var code = 'for (var ' + variable0 + ' in ' + argument0 + ') {\n' +
branch + '}\n';
return code;
};
Blockly.Dart.controls_flow_statements = function() {
// Flow statements: continue, break.
switch (this.getTitleValue('FLOW')) {
case 'BREAK':
return 'break;\n';
case 'CONTINUE':
return 'continue;\n';
}
throw 'Unknown flow statement.';
};

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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for math blocks.
* @author q.neutron@gmail.com (Quynh Neutron)
*/
'use strict';
goog.provide('Blockly.Dart.math');
goog.require('Blockly.Dart');
Blockly.Dart.addReservedWords('Math');
Blockly.Dart.math_number = function() {
// Numeric value.
var code = window.parseFloat(this.getTitleValue('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 ?
Blockly.Dart.ORDER_UNARY_PREFIX : Blockly.Dart.ORDER_ATOMIC;
return [code, order];
};
Blockly.Dart.math_arithmetic = function() {
// Basic arithmetic operators, and power.
var mode = this.getTitleValue('OP');
var tuple = Blockly.Dart.math_arithmetic.OPERATORS[mode];
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 code;
// Power in Dart requires a special case since it has no operator.
if (!operator) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
code = 'Math.pow(' + argument0 + ', ' + argument1 + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
}
code = argument0 + operator + argument1;
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() {
// Math operators with single operand.
var operator = this.getTitleValue('OP');
var code;
var arg;
if (operator == 'NEG') {
// Negation is a special case given its different operator precedence.
arg = Blockly.Dart.valueToCode(this, 'NUM',
Blockly.Dart.ORDER_UNARY_PREFIX) || '0';
if (arg[0] == '-') {
// --3 is not legal in Dart.
arg = ' ' + arg;
}
code = '-' + arg;
return [code, Blockly.Dart.ORDER_UNARY_PREFIX];
}
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',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '0';
} else if (operator == 'SIN' || operator == 'COS' || operator == 'TAN') {
arg = Blockly.Dart.valueToCode(this, 'NUM',
Blockly.Dart.ORDER_MULTIPLICATIVE) || '0';
} else {
arg = Blockly.Dart.valueToCode(this, 'NUM',
Blockly.Dart.ORDER_NONE) || '0';
}
// First, handle cases which generate values that don't need parentheses.
switch (operator) {
case 'ABS':
code = arg + '.abs()';
break;
case 'ROOT':
code = 'Math.sqrt(' + arg + ')';
break;
case 'LN':
code = 'Math.log(' + arg + ')';
break;
case 'EXP':
code = 'Math.exp(' + arg + ')';
break;
case 'POW10':
code = 'Math.pow(10,' + arg + ')';
break;
case 'ROUND':
code = arg + '.round()';
break;
case 'ROUNDUP':
code = arg + '.ceil()';
break;
case 'ROUNDDOWN':
code = arg + '.floor()';
break;
case 'SIN':
code = 'Math.sin(' + arg + ' / 180 * Math.PI)';
break;
case 'COS':
code = 'Math.cos(' + arg + ' / 180 * Math.PI)';
break;
case 'TAN':
code = 'Math.tan(' + arg + ' / 180 * Math.PI)';
break;
}
if (code) {
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
}
// Second, handle cases which generate values that may need parentheses.
switch (operator) {
case 'LOG10':
code = 'Math.log(' + arg + ') / Math.log(10)';
break;
case 'ASIN':
code = 'Math.asin(' + arg + ') / Math.PI * 180';
break;
case 'ACOS':
code = 'Math.acos(' + arg + ') / Math.PI * 180';
break;
case 'ATAN':
code = 'Math.atan(' + arg + ') / Math.PI * 180';
break;
default:
throw 'Unknown math operator: ' + operator;
}
return [code, Blockly.Dart.ORDER_MULTIPLICATIVE];
};
Blockly.Dart.math_constant = function() {
// Constants: PI, E, the Golden Ratio, sqrt(2), 1/sqrt(2), INFINITY.
var constant = this.getTitleValue('CONSTANT');
if (constant != 'INFINITY') {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
}
return Blockly.Dart.math_constant.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() {
// 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',
Blockly.Dart.ORDER_MULTIPLICATIVE);
if (!number_to_check) {
return ['false', Blockly.Python.ORDER_ATOMIC];
}
var dropdown_property = this.getTitleValue('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 + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
}
switch (dropdown_property) {
case 'EVEN':
code = number_to_check + ' % 2 == 0';
break;
case 'ODD':
code = number_to_check + ' % 2 == 1';
break;
case 'WHOLE':
code = number_to_check + ' % 1 == 0';
break;
case 'POSITIVE':
code = number_to_check + ' > 0';
break;
case 'NEGATIVE':
code = number_to_check + ' < 0';
break;
case 'DIVISIBLE_BY':
var divisor = Blockly.Dart.valueToCode(this, 'DIVISOR',
Blockly.Dart.ORDER_MULTIPLICATIVE);
if (!divisor) {
return ['false', Blockly.Python.ORDER_ATOMIC];
}
code = number_to_check + ' % ' + divisor + ' == 0';
break;
}
return [code, Blockly.Dart.ORDER_EQUALITY];
};
Blockly.Dart.math_change = function() {
// Add to a variable in place.
var argument0 = Blockly.Dart.valueToCode(this, 'DELTA',
Blockly.Dart.ORDER_ADDITIVE) || '0';
var varName = Blockly.Dart.variableDB_.getName(this.getTitleValue('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;
// Trigonometry functions have a single operand.
Blockly.Dart.math_trig = Blockly.Dart.math_single;
Blockly.Dart.math_on_list = function() {
// Math functions for lists.
var func = this.getTitleValue('OP');
var list = Blockly.Dart.valueToCode(this, '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 + ')';
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 + ')';
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 + ')';
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 + ')';
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 + ')';
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 + ')';
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 + ')';
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 + ')';
break;
default:
throw 'Unknown operator: ' + func;
}
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.math_modulo = function() {
// Remainder computation.
var argument0 = Blockly.Dart.valueToCode(this, 'DIVIDEND',
Blockly.Dart.ORDER_MULTIPLICATIVE) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'DIVISOR',
Blockly.Dart.ORDER_MULTIPLICATIVE) || '0';
var code = argument0 + ' % ' + argument1;
return [code, Blockly.Dart.ORDER_MULTIPLICATIVE];
};
Blockly.Dart.math_constrain = function() {
// Constrain a number between two limits.
var argument0 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_NONE) || '0';
var argument1 = Blockly.Dart.valueToCode(this, 'LOW',
Blockly.Dart.ORDER_NONE) || '0';
var argument2 = Blockly.Dart.valueToCode(this, '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() {
// Random integer between [X] and [Y].
var argument0 = Blockly.Dart.valueToCode(this, 'FROM',
Blockly.Dart.ORDER_NONE) || '0';
var argument1 = Blockly.Dart.valueToCode(this, '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 + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.math_random_float = function() {
// Random fraction between 0 and 1.
return ['new Math.Random().nextDouble()', Blockly.Dart.ORDER_UNARY_POSTFIX];
};

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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for variable blocks.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Dart.procedures');
goog.require('Blockly.Dart');
Blockly.Dart.procedures_defreturn = function() {
// Define a procedure with a return value.
var funcName = Blockly.Dart.variableDB_.getName(this.getTitleValue('NAME'),
Blockly.Procedures.NAME_TYPE);
var branch = Blockly.Dart.statementToCode(this, 'STACK');
if (Blockly.Dart.INFINITE_LOOP_TRAP) {
branch = Blockly.Dart.INFINITE_LOOP_TRAP.replace(/%1/g,
'\'' + this.id + '\'') + branch;
}
var returnValue = Blockly.Dart.valueToCode(this, 'RETURN',
Blockly.Dart.ORDER_NONE) || '';
if (returnValue) {
returnValue = ' return ' + returnValue + ';\n';
}
var returnType = returnValue ? 'dynamic' : 'void';
var args = [];
for (var x = 0; x < this.arguments_.length; x++) {
args[x] = Blockly.Dart.variableDB_.getName(this.arguments_[x],
Blockly.Variables.NAME_TYPE);
}
var code = returnType + ' ' + funcName + '(' + args.join(', ') + ') {\n' +
branch + returnValue + '}';
code = Blockly.Dart.scrub_(this, code);
Blockly.Dart.definitions_[funcName] = code;
return null;
};
// Defining a procedure without a return value uses the same generator as
// a procedure with a return value.
Blockly.Dart.procedures_defnoreturn = Blockly.Dart.procedures_defreturn;
Blockly.Dart.procedures_callreturn = function() {
// Call a procedure with a return value.
var funcName = Blockly.Dart.variableDB_.getName(this.getTitleValue('NAME'),
Blockly.Procedures.NAME_TYPE);
var args = [];
for (var x = 0; x < this.arguments_.length; x++) {
args[x] = Blockly.Dart.valueToCode(this, 'ARG' + x,
Blockly.Dart.ORDER_NONE) || 'null';
}
var code = funcName + '(' + args.join(', ') + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.procedures_callnoreturn = function() {
// Call a procedure with no return value.
var funcName = Blockly.Dart.variableDB_.getName(this.getTitleValue('NAME'),
Blockly.Procedures.NAME_TYPE);
var args = [];
for (var x = 0; x < this.arguments_.length; x++) {
args[x] = Blockly.Dart.valueToCode(this, 'ARG' + x,
Blockly.Dart.ORDER_NONE) || 'null';
}
var code = funcName + '(' + args.join(', ') + ');\n';
return code;
};
Blockly.Dart.procedures_ifreturn = function() {
// Conditionally return value from a procedure.
var condition = Blockly.Dart.valueToCode(this, 'CONDITION',
Blockly.Dart.ORDER_NONE) || 'false';
var code = 'if (' + condition + ') {\n';
if (this.hasReturnValue_) {
var value = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_NONE) || 'null';
code += ' return ' + value + ';\n';
} else {
code += ' return;\n';
}
code += '}\n';
return code;
};

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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for text blocks.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Dart.text');
goog.require('Blockly.Dart');
Blockly.Dart.addReservedWords('Html,Math');
Blockly.Dart.text = function() {
// Text value.
var code = Blockly.Dart.quote_(this.getTitleValue('TEXT'));
return [code, Blockly.Dart.ORDER_ATOMIC];
};
Blockly.Dart.text_join = function() {
// Create a string made up of any number of elements of any type.
var code;
if (this.itemCount_ == 0) {
return ['\'\'', Blockly.Dart.ORDER_ATOMIC];
} else if (this.itemCount_ == 1) {
var argument0 = Blockly.Dart.valueToCode(this, 'ADD0',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
code = argument0 + '.toString()';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
} else {
code = new Array(this.itemCount_);
for (var n = 0; n < this.itemCount_; n++) {
code[n] = Blockly.Dart.valueToCode(this, 'ADD' + n,
Blockly.Dart.ORDER_NONE) || '\'\'';
}
code = '[' + code.join(',') + '].join()';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
}
};
Blockly.Dart.text_append = function() {
// Append to a variable in place.
var varName = Blockly.Dart.variableDB_.getName(this.getTitleValue('VAR'),
Blockly.Variables.NAME_TYPE);
var argument0 = Blockly.Dart.valueToCode(this, 'TEXT',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
return varName + ' = [' + varName + ', ' + argument0 + '].join();\n';
};
Blockly.Dart.text_length = function() {
// String length.
var argument0 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
return [argument0 + '.length', Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.text_isEmpty = function() {
// Is the string null?
var argument0 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
return [argument0 + '.isEmpty', Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.text_endString = function() {
// Return a leading or trailing substring.
var first = this.getTitleValue('END') == 'FIRST';
var code;
if (first) {
var argument0 = Blockly.Dart.valueToCode(this, 'NUM',
Blockly.Dart.ORDER_NONE) || '1';
var argument1 = Blockly.Dart.valueToCode(this, 'TEXT',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
code = argument1 + '.substring(0, ' + argument0 + ')';
} else {
if (!Blockly.Dart.definitions_['text_tailString']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'text_tailString', Blockly.Generator.NAME_TYPE);
Blockly.Dart.text_endString.text_tailString = functionName;
var func = [];
func.push('String ' + functionName + '(n, myString) {');
func.push(' // Return a trailing substring of n characters.');
func.push(' return myString.substring(myString.length - n);');
func.push('}');
Blockly.Dart.definitions_['text_tailString'] = func.join('\n');
}
var argument0 = Blockly.Dart.valueToCode(this, 'NUM',
Blockly.Dart.ORDER_NONE) || '1';
var argument1 = Blockly.Dart.valueToCode(this, 'TEXT',
Blockly.Dart.ORDER_NONE) || '\'\'';
code = Blockly.Dart.text_endString.text_tailString +
'(' + argument0 + ', ' + argument1 + ')';
}
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.text_indexOf = function() {
// Search the text for a substring.
var operator = this.getTitleValue('END') == 'FIRST' ?
'indexOf' : 'lastIndexOf';
var argument0 = Blockly.Dart.valueToCode(this, 'FIND',
Blockly.Dart.ORDER_NONE) || '\'\'';
var argument1 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
var code = argument1 + '.' + operator + '(' + argument0 + ') + 1';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.text_charAt = function() {
// Get letter at index.
// Note: Until January 2013 this block did not have the WHERE input.
var where = this.getTitleValue('WHERE') || 'FROM_START';
var at = Blockly.Dart.valueToCode(this, 'AT',
Blockly.Dart.ORDER_NONE) || '1';
var text = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
switch (where) {
case 'FIRST':
var code = text + '[0]';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
case 'FROM_START':
// Blockly uses one-based indicies.
if (at.match(/^-?\d+$/)) {
// If the index is a naked number, decrement it right now.
at = parseInt(at, 10) - 1;
} else {
// If the index is dynamic, decrement it in code.
at += ' - 1';
}
var code = text + '[' + at + ']';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
case 'LAST':
at = 1;
// Fall through.
case 'FROM_END':
if (!Blockly.Dart.definitions_['text_get_from_end']) {
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'text_get_from_end', Blockly.Generator.NAME_TYPE);
Blockly.Dart.text_charAt.text_get_from_end = functionName;
var func = [];
func.push('String ' + functionName + '(String text, num x) {');
func.push(' return text[text.length - x];');
func.push('}');
Blockly.Dart.definitions_['text_get_from_end'] = func.join('\n');
}
code = Blockly.Dart.text_charAt.text_get_from_end +
'(' + text + ', ' + at + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
case 'RANDOM':
if (!Blockly.Dart.definitions_['text_random_letter']) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'text_random_letter', Blockly.Generator.NAME_TYPE);
Blockly.Dart.text_charAt.text_random_letter = functionName;
var func = [];
func.push('String ' + functionName + '(String text) {');
func.push(' int x = new Math.Random().nextInt(text.length);');
func.push(' return text[x];');
func.push('}');
Blockly.Dart.definitions_['text_random_letter'] = func.join('\n');
}
code = Blockly.Dart.text_charAt.text_random_letter +
'(' + text + ')';
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
}
throw 'Unhandled option (text_charAt).';
};
Blockly.Dart.text_changeCase = function() {
// Change capitalization.
var mode = this.getTitleValue('CASE');
var operator = Blockly.Dart.text_changeCase.OPERATORS[mode];
var code;
if (operator) {
// Upper and lower case are functions built into Dart.
var argument0 = Blockly.Dart.valueToCode(this, 'TEXT',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
code = argument0 + operator;
} else {
if (!Blockly.Dart.definitions_['toTitleCase']) {
// Title case is not a native Dart function. Define one.
var functionName = Blockly.Dart.variableDB_.getDistinctName(
'text_toTitleCase', Blockly.Generator.NAME_TYPE);
Blockly.Dart.text_changeCase.toTitleCase = functionName;
var func = [];
func.push('String ' + functionName + '(str) {');
func.push(' RegExp exp = new RegExp(r\'\\b\');');
func.push(' List<String> list = str.split(exp);');
func.push(' final title = new StringBuffer();');
func.push(' for (String part in list) {');
func.push(' if (part.length > 0) {');
func.push(' title.write(part[0].toUpperCase());');
func.push(' if (part.length > 0) {');
func.push(' title.write(part.substring(1).toLowerCase());');
func.push(' }');
func.push(' }');
func.push(' }');
func.push(' return title.toString();');
func.push('}');
Blockly.Dart.definitions_['toTitleCase'] = func.join('\n');
}
var argument0 = Blockly.Dart.valueToCode(this, 'TEXT',
Blockly.Dart.ORDER_NONE) || '\'\'';
code = Blockly.Dart.text_changeCase.toTitleCase + '(' + argument0 + ')';
}
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.text_changeCase.OPERATORS = {
UPPERCASE: '.toUpperCase()',
LOWERCASE: '.toLowerCase()',
TITLECASE: null
};
Blockly.Dart.text_trim = function() {
// Trim spaces.
var mode = this.getTitleValue('MODE');
var operator = Blockly.Dart.text_trim.OPERATORS[mode];
var argument0 = Blockly.Dart.valueToCode(this, 'TEXT',
Blockly.Dart.ORDER_UNARY_POSTFIX) || '\'\'';
return [argument0 + operator, Blockly.Dart.ORDER_UNARY_POSTFIX];
};
Blockly.Dart.text_trim.OPERATORS = {
LEFT: '.replaceFirst(new RegExp(r\'^\\s+\'), \'\')',
RIGHT: '.replaceFirst(new RegExp(r\'\\s+$\'), \'\')',
BOTH: '.trim()'
};
Blockly.Dart.text_print = function() {
// Print statement.
var argument0 = Blockly.Dart.valueToCode(this, 'TEXT',
Blockly.Dart.ORDER_NONE) || '\'\'';
return 'print(' + argument0 + ');\n';
};
Blockly.Dart.text_prompt = function() {
// Prompt function.
Blockly.Dart.definitions_['import_dart_html'] =
'import \'dart:html\' as Html;';
var msg = Blockly.Dart.quote_(this.getTitleValue('TEXT'));
var code = 'Html.window.prompt(' + msg + ', \'\')';
var toNumber = this.getTitleValue('TYPE') == 'NUMBER';
if (toNumber) {
Blockly.Dart.definitions_['import_dart_math'] =
'import \'dart:math\' as Math;';
code = 'Math.parseDouble(' + code + ')';
}
return [code, Blockly.Dart.ORDER_UNARY_POSTFIX];
};

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/**
* Visual Blocks Language
*
* Copyright 2012 Google Inc.
* http://blockly.googlecode.com/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Generating Dart for variable blocks.
* @author fraser@google.com (Neil Fraser)
*/
'use strict';
goog.provide('Blockly.Dart.variables');
goog.require('Blockly.Dart');
Blockly.Dart.variables_get = function() {
// Variable getter.
var code = Blockly.Dart.variableDB_.getName(this.getTitleValue('VAR'),
Blockly.Variables.NAME_TYPE);
return [code, Blockly.Dart.ORDER_ATOMIC];
};
Blockly.Dart.variables_set = function() {
// Variable setter.
var argument0 = Blockly.Dart.valueToCode(this, 'VALUE',
Blockly.Dart.ORDER_ASSIGNMENT) || '0';
var varName = Blockly.Dart.variableDB_.getName(this.getTitleValue('VAR'),
Blockly.Variables.NAME_TYPE);
return varName + ' = ' + argument0 + ';\n';
};