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starting php support addition
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daarond
345
generators/php/math.js
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345
generators/php/math.js
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/**
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* @license
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* Visual Blocks Language
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*
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* Copyright 2012 Google Inc.
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* https://developers.google.com/blockly/
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @fileoverview Generating PHP for math blocks.
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* @author daarond@gmail.com (Daaron Dwyer)
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*/
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'use strict';
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goog.provide('Blockly.PHP.math');
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goog.require('Blockly.PHP');
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Blockly.PHP['math_number'] = function(block) {
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// Numeric value.
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var code = parseFloat(block.getFieldValue('NUM'));
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return [code, Blockly.PHP.ORDER_ATOMIC];
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};
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Blockly.PHP['math_arithmetic'] = function(block) {
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// Basic arithmetic operators, and power.
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var OPERATORS = {
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'ADD': [' + ', Blockly.PHP.ORDER_ADDITION],
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'MINUS': [' - ', Blockly.PHP.ORDER_SUBTRACTION],
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'MULTIPLY': [' * ', Blockly.PHP.ORDER_MULTIPLICATION],
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'DIVIDE': [' / ', Blockly.PHP.ORDER_DIVISION],
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'POWER': [null, Blockly.PHP.ORDER_COMMA] // Handle power separately.
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};
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var tuple = OPERATORS[block.getFieldValue('OP')];
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var operator = tuple[0];
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var order = tuple[1];
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var argument0 = Blockly.PHP.valueToCode(block, 'A', order) || '0';
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var argument1 = Blockly.PHP.valueToCode(block, 'B', order) || '0';
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var code;
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// Power in PHP requires a special case since it has no operator.
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if (!operator) {
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code = 'Math.pow(' + argument0 + ', ' + argument1 + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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code = argument0 + operator + argument1;
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return [code, order];
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};
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Blockly.PHP['math_single'] = function(block) {
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// Math operators with single operand.
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var operator = block.getFieldValue('OP');
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var code;
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var arg;
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if (operator == 'NEG') {
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// Negation is a special case given its different operator precedence.
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arg = Blockly.PHP.valueToCode(block, 'NUM',
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Blockly.PHP.ORDER_UNARY_NEGATION) || '0';
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if (arg[0] == '-') {
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// --3 is not legal in JS.
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arg = ' ' + arg;
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}
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code = '-' + arg;
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return [code, Blockly.PHP.ORDER_UNARY_NEGATION];
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}
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if (operator == 'SIN' || operator == 'COS' || operator == 'TAN') {
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arg = Blockly.PHP.valueToCode(block, 'NUM',
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Blockly.PHP.ORDER_DIVISION) || '0';
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} else {
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arg = Blockly.PHP.valueToCode(block, 'NUM',
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Blockly.PHP.ORDER_NONE) || '0';
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}
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// First, handle cases which generate values that don't need parentheses
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// wrapping the code.
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switch (operator) {
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case 'ABS':
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code = 'abs(' + arg + ')';
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break;
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case 'ROOT':
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code = 'sqrt(' + arg + ')';
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break;
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case 'LN':
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code = 'log(' + arg + ')';
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break;
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case 'EXP':
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code = 'exp(' + arg + ')';
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break;
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case 'POW10':
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code = 'pow(10,' + arg + ')';
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break;
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case 'ROUND':
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code = 'round(' + arg + ')';
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break;
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case 'ROUNDUP':
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code = 'ceil(' + arg + ')';
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break;
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case 'ROUNDDOWN':
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code = 'floor(' + arg + ')';
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break;
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case 'SIN':
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code = 'sin(' + arg + ' / 180 * pi())';
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break;
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case 'COS':
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code = 'cos(' + arg + ' / 180 * pi())';
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break;
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case 'TAN':
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code = 'tan(' + arg + ' / 180 * pi())';
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break;
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}
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if (code) {
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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// Second, handle cases which generate values that may need parentheses
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// wrapping the code.
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switch (operator) {
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case 'LOG10':
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code = 'log(' + arg + ') / log(10)';
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break;
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case 'ASIN':
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code = 'asin(' + arg + ') / pi() * 180';
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break;
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case 'ACOS':
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code = 'acos(' + arg + ') / pi() * 180';
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break;
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case 'ATAN':
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code = 'atan(' + arg + ') / pi() * 180';
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break;
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default:
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throw 'Unknown math operator: ' + operator;
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}
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return [code, Blockly.PHP.ORDER_DIVISION];
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};
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Blockly.PHP['math_constant'] = function(block) {
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// Constants: PI, E, the Golden Ratio, sqrt(2), 1/sqrt(2), INFINITY.
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var CONSTANTS = {
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'PI': ['pi()', Blockly.PHP.ORDER_MEMBER],
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'E': ['exp', Blockly.PHP.ORDER_FUNCTION_CALL],
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'GOLDEN_RATIO':
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['(1 + sqrt(5)) / 2', Blockly.PHP.ORDER_DIVISION],
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'SQRT2': ['sqrt', Blockly.PHP.ORDER_MEMBER],
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'SQRT1_2': ['sqrt', Blockly.PHP.ORDER_MEMBER],
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'INFINITY': ['Infinity', Blockly.PHP.ORDER_ATOMIC]
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};
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return CONSTANTS[block.getFieldValue('CONSTANT')];
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};
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Blockly.PHP['math_number_property'] = function(block) {
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// Check if a number is even, odd, prime, whole, positive, or negative
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// or if it is divisible by certain number. Returns true or false.
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var number_to_check = Blockly.PHP.valueToCode(block, 'NUMBER_TO_CHECK',
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Blockly.PHP.ORDER_MODULUS) || '0';
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var dropdown_property = block.getFieldValue('PROPERTY');
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var code;
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switch (dropdown_property) {
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case 'EVEN':
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code = number_to_check + ' % 2 == 0';
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break;
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case 'ODD':
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code = number_to_check + ' % 2 == 1';
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break;
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case 'PRIME':
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code = 'mp_prob_prime('+number_to_check + ')';
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break;
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case 'WHOLE':
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code = number_to_check + ' % 1 == 0';
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break;
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case 'POSITIVE':
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code = number_to_check + ' > 0';
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break;
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case 'NEGATIVE':
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code = number_to_check + ' < 0';
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break;
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case 'DIVISIBLE_BY':
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var divisor = Blockly.PHP.valueToCode(block, 'DIVISOR',
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Blockly.PHP.ORDER_MODULUS) || '0';
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code = number_to_check + ' % ' + divisor + ' == 0';
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break;
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}
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return [code, Blockly.PHP.ORDER_EQUALITY];
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};
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Blockly.PHP['math_change'] = function(block) {
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// Add to a variable in place.
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var argument0 = Blockly.PHP.valueToCode(block, 'DELTA',
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Blockly.PHP.ORDER_ADDITION) || '0';
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var varName = Blockly.PHP.variableDB_.getName(
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block.getFieldValue('VAR'), Blockly.Variables.NAME_TYPE);
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return varName + ' = (typeof ' + varName + ' == \'number\' ? ' + varName +
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' : 0) + ' + argument0 + ';\n';
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};
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// Rounding functions have a single operand.
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Blockly.PHP['math_round'] = Blockly.PHP['math_single'];
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// Trigonometry functions have a single operand.
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Blockly.PHP['math_trig'] = Blockly.PHP['math_single'];
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Blockly.PHP['math_on_list'] = function(block) {
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// Math functions for lists.
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var func = block.getFieldValue('OP');
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var list, code;
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switch (func) {
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case 'SUM':
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_MEMBER) || 'array()';
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code = 'array_sum(' + list + ')';
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break;
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case 'MIN':
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_COMMA) || 'array()';
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code = 'min(' + list + ')';
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break;
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case 'MAX':
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_COMMA) || 'array()';
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code = 'max(' + list + ')';
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break;
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case 'AVERAGE':
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// math_median([null,null,1,3]) == 2.0.
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var functionName = Blockly.PHP.provideFunction_(
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'math_mean',
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[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
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'($myList) {',
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' return array_sum($myList) / count($myList);',
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'}']);
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_NONE) || 'array()';
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code = functionName + '(' + list + ')';
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break;
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case 'MEDIAN':
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// math_median([null,null,1,3]) == 2.0.
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var functionName = Blockly.PHP.provideFunction_(
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'math_median',
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[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
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'($myList) {',
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' rsort($myList);',
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' $middle = round(count($myList) / 2);',
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' return $myList[$middle-1]; ',
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'}']);
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_NONE) || '[]';
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code = functionName + '(' + list + ')';
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break;
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case 'MODE':
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// As a list of numbers can contain more than one mode,
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// the returned result is provided as an array.
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// Mode of [3, 'x', 'x', 1, 1, 2, '3'] -> ['x', 1].
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var functionName = Blockly.PHP.provideFunction_(
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'math_modes',
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[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
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'($values) {',
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' $v = array_count_values($values);',
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' arsort($v);',
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' foreach($v as $k => $v){$total = $k; break;}',
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' return $total;',
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'}']);
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_NONE) || '[]';
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code = functionName + '(' + list + ')';
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break;
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case 'STD_DEV':
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_MEMBER) || 'array()';
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code = 'stats_standard_deviation(' + list + ')';
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break;
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case 'RANDOM':
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var functionName = Blockly.PHP.provideFunction_(
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'math_random_list',
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[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
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'($list) {',
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' $x = floor(rand() * count($list));',
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' return $list[$x];',
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'}']);
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list = Blockly.PHP.valueToCode(block, 'LIST',
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Blockly.PHP.ORDER_NONE) || '[]';
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code = functionName + '(' + list + ')';
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break;
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default:
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throw 'Unknown operator: ' + func;
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}
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['math_modulo'] = function(block) {
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// Remainder computation.
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var argument0 = Blockly.PHP.valueToCode(block, 'DIVIDEND',
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Blockly.PHP.ORDER_MODULUS) || '0';
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var argument1 = Blockly.PHP.valueToCode(block, 'DIVISOR',
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Blockly.PHP.ORDER_MODULUS) || '0';
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var code = argument0 + ' % ' + argument1;
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return [code, Blockly.PHP.ORDER_MODULUS];
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};
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Blockly.PHP['math_constrain'] = function(block) {
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// Constrain a number between two limits.
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var argument0 = Blockly.PHP.valueToCode(block, 'VALUE',
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Blockly.PHP.ORDER_COMMA) || '0';
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var argument1 = Blockly.PHP.valueToCode(block, 'LOW',
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Blockly.PHP.ORDER_COMMA) || '0';
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var argument2 = Blockly.PHP.valueToCode(block, 'HIGH',
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Blockly.PHP.ORDER_COMMA) || 'Infinity';
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var code = 'min(max(' + argument0 + ', ' + argument1 + '), ' +
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argument2 + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['math_random_int'] = function(block) {
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// Random integer between [X] and [Y].
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var argument0 = Blockly.PHP.valueToCode(block, 'FROM',
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Blockly.PHP.ORDER_COMMA) || '0';
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var argument1 = Blockly.PHP.valueToCode(block, 'TO',
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Blockly.PHP.ORDER_COMMA) || '0';
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var functionName = Blockly.PHP.provideFunction_(
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'math_random_int',
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[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
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'($a, $b) {',
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' if ($a > $b) {',
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' // Swap a and b to ensure a is smaller.',
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' $c = $a;',
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' $a = $b;',
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' $b = $c;',
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' }',
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' return rand($a, $b);',
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'}']);
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var code = functionName + '(' + argument0 + ', ' + argument1 + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['math_random_float'] = function(block) {
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// Random fraction between 0 and 1.
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return ['(float)rand()/(float)getrandmax()', Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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