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f28928db83d8649891ab268304a63c013a16d527
blockly/generators/php/lists.js
Dan LaLiberte f28928db83 Update pull request, mostly whitespace and comments.
2016-05-06 10:37:19 -04:00

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JavaScript
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/**
* @license
* Visual Blocks Language
*
* Copyright 2015 Google Inc.
* https://developers.google.com/blockly/
*
* 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 PHP for list blocks.
* @author daarond@gmail.com (Daaron Dwyer)
*/
'use strict';
goog.provide('Blockly.PHP.lists');
goog.require('Blockly.PHP');
Blockly.PHP['lists_create_empty'] = function(block) {
// Create an empty list.
return ['array()', Blockly.PHP.ORDER_ATOMIC];
};
Blockly.PHP['lists_create_with'] = function(block) {
// Create a list with any number of elements of any type.
var code = new Array(block.itemCount_);
for (var n = 0; n < block.itemCount_; n++) {
code[n] = Blockly.PHP.valueToCode(block, 'ADD' + n,
Blockly.PHP.ORDER_COMMA) || 'null';
}
code = 'array(' + code.join(', ') + ')';
return [code, Blockly.PHP.ORDER_ATOMIC];
};
Blockly.PHP['lists_repeat'] = function(block) {
// Create a list with one element repeated.
var functionName = Blockly.PHP.provideFunction_(
'lists_repeat',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'($value, $count) {',
' $array = array();',
' for ($index = 0; $index < $count; $index++) {',
' $array[] = $value;',
' }',
' return $array;',
'}']);
var argument0 = Blockly.PHP.valueToCode(block, 'ITEM',
Blockly.PHP.ORDER_COMMA) || 'null';
var argument1 = Blockly.PHP.valueToCode(block, 'NUM',
Blockly.PHP.ORDER_COMMA) || '0';
var code = functionName + '(' + argument0 + ', ' + argument1 + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
};
Blockly.PHP['lists_length'] = function(block) {
// String or array length.
var functionName = Blockly.PHP.provideFunction_(
'length',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ + '($value) {',
' if (is_string($value)) {',
' return strlen($value);',
' } else {',
' return count($value);',
' }',
'}']);
var argument0 = Blockly.PHP.valueToCode(block, 'VALUE',
Blockly.PHP.ORDER_FUNCTION_CALL) || '\'\'';
return [functionName + '(' + argument0 + ')', Blockly.PHP.ORDER_FUNCTION_CALL];
};
Blockly.PHP['lists_isEmpty'] = function(block) {
// Is the string null or array empty?
var argument0 = Blockly.PHP.valueToCode(block, 'VALUE',
Blockly.PHP.ORDER_FUNCTION_CALL) || 'array()';
return ['empty(' + argument0 + ')', Blockly.PHP.ORDER_FUNCTION_CALL];
};
Blockly.PHP['lists_indexOf'] = function(block) {
// Find an item in the list.
var operator = block.getFieldValue('END') == 'FIRST' ?
'indexOf' : 'lastIndexOf';
var argument0 = Blockly.PHP.valueToCode(block, 'FIND',
Blockly.PHP.ORDER_NONE) || '\'\'';
var argument1 = Blockly.PHP.valueToCode(block, 'VALUE',
Blockly.PHP.ORDER_MEMBER) || '[]';
var functionName;
if (block.getFieldValue('END') == 'FIRST'){
// indexOf
functionName = Blockly.PHP.provideFunction_(
'indexOf',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'($haystack, $needle) {',
' for ($index = 0; $index < count($haystack); $index++) {',
' if ($haystack[$index] == $needle) return $index+1;',
' }',
' return 0;',
'}']);
} else {
// lastIndexOf
functionName = Blockly.PHP.provideFunction_(
'lastIndexOf',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'($haystack, $needle) {',
' $last = 0;',
' for ($index = 0; $index < count($haystack); $index++) {',
' if ($haystack[$index] == $needle) $last = $index+1;',
' }',
' return $last;',
'}']);
}
var code = functionName + '(' + argument1 + ', ' + argument0 + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
};
Blockly.PHP['lists_getIndex'] = function(block) {
// Get element at index.
var mode = block.getFieldValue('MODE') || 'GET';
var where = block.getFieldValue('WHERE') || 'FROM_START';
var at = Blockly.PHP.valueToCode(block, 'AT',
Blockly.PHP.ORDER_UNARY_NEGATION) || '1';
var list = Blockly.PHP.valueToCode(block, 'VALUE',
Blockly.PHP.ORDER_FUNCTION_CALL) || 'array()';
if (where == 'FIRST') {
if (mode == 'GET') {
var code = list + '[0]';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'GET_REMOVE') {
var code = 'array_shift(' + list + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'REMOVE') {
return 'array_shift(' + list + ');\n';
}
} else if (where == 'LAST') {
if (mode == 'GET') {
var code = 'end(' + list + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'GET_REMOVE') {
var code = 'array_pop(' + list + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'REMOVE') {
return 'array_pop(' + list + ');\n';
}
} else if (where == 'FROM_START') {
// Blockly uses one-based indicies.
if (Blockly.isNumber(at)) {
// If the index is a naked number, decrement it right now.
at = parseFloat(at) - 1;
} else {
// If the index is dynamic, decrement it in code.
at += ' - 1';
}
if (mode == 'GET') {
var code = list + '[' + at + ']';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'GET_REMOVE') {
var code = 'array_splice(' + list + ', ' + at + ', 1)[0]';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'REMOVE') {
return 'array_splice(' + list + ', ' + at + ', 1);\n';
}
} else if (where == 'FROM_END') {
if (mode == 'GET') {
var code = 'array_slice(' + list + ', -' + at + ', 1)[0]';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'GET_REMOVE' || mode == 'REMOVE') {
code = 'array_splice(' + list +
', count(' + list + ') - ' + at + ', 1)[0]';
if (mode == 'GET_REMOVE') {
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'REMOVE') {
return code + ';\n';
}
}
} else if (where == 'RANDOM') {
if (mode == 'GET'){
var functionName = Blockly.PHP.provideFunction_(
'lists_get_random_item',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'($list) {',
' return $list[rand(0,count($list)-1)];',
'}']);
code = functionName + '(' + list + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'GET_REMOVE'){
var functionName = Blockly.PHP.provideFunction_(
'lists_get_remove_random_item',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'(&$list) {',
' $x = rand(0,count($list)-1);',
' unset($list[$x]);',
' return array_values($list);',
'}']);
code = functionName + '(' + list + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
} else if (mode == 'REMOVE') {
var functionName = Blockly.PHP.provideFunction_(
'lists_remove_random_item',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'(&$list) {',
' unset($list[rand(0,count($list)-1)]);',
'}']);
return functionName + '(' + list + ');\n';
}
}
throw 'Unhandled combination (lists_getIndex).';
};
Blockly.PHP['lists_setIndex'] = function(block) {
// Set element at index.
// Note: Until February 2013 this block did not have MODE or WHERE inputs.
var list = Blockly.PHP.valueToCode(block, 'LIST',
Blockly.PHP.ORDER_MEMBER) || 'array()';
var mode = block.getFieldValue('MODE') || 'GET';
var where = block.getFieldValue('WHERE') || 'FROM_START';
var at = Blockly.PHP.valueToCode(block, 'AT',
Blockly.PHP.ORDER_NONE) || '1';
var value = Blockly.PHP.valueToCode(block, 'TO',
Blockly.PHP.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+$/)) {
return '';
}
var listVar = Blockly.PHP.variableDB_.getDistinctName(
'tmp_list', Blockly.Variables.NAME_TYPE);
var code = listVar + ' = &' + list + ';\n';
list = listVar;
return code;
}
if (where == 'FIRST') {
if (mode == 'SET') {
return list + '[0] = ' + value + ';\n';
} else if (mode == 'INSERT') {
return 'array_unshift(' + list + ', ' + value + ');\n';
}
} else if (where == 'LAST') {
if (mode == 'SET') {
var functionName = Blockly.PHP.provideFunction_(
'lists_set_last_item',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'(&$list, $value) {',
' $list[count($list) - 1] = $value;',
'}']);
return functionName + '(' + list + ', ' + value + ');\n';
} else if (mode == 'INSERT') {
return 'array_push(' + list + ', ' + value + ');\n';
}
} else if (where == 'FROM_START') {
// Blockly uses one-based indicies.
if (Blockly.isNumber(at)) {
// If the index is a naked number, decrement it right now.
at = parseFloat(at) - 1;
} else {
// If the index is dynamic, decrement it in code.
at += ' - 1';
}
if (mode == 'SET') {
return list + '[' + at + '] = ' + value + ';\n';
} else if (mode == 'INSERT') {
return 'array_splice(' + list + ', ' + at + ', 0, ' + value + ');\n';
}
} else if (where == 'FROM_END') {
if (mode == 'SET') {
var functionName = Blockly.PHP.provideFunction_(
'lists_set_from_end',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'(&$list, $at, $value) {',
' $list[count($list) - $at] = $value;',
'}']);
return functionName + '(' + list + ', ' + at + ', ' + value + ');\n';
} else if (mode == 'INSERT') {
var functionName = Blockly.PHP.provideFunction_(
'lists_insert_from_end',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'(&$list, $at, $value) {',
' return array_splice($list, count($list) - $at, 0, $value);',
'}']);
return functionName + '(' + list + ', ' + at + ', ' + value + ');\n';
}
} else if (where == 'RANDOM') {
var code = cacheList();
var xVar = Blockly.PHP.variableDB_.getDistinctName(
'tmp_x', Blockly.Variables.NAME_TYPE);
code += xVar + ' = rand(0, count(' + list + ')-1);\n';
if (mode == 'SET') {
code += list + '[' + xVar + '] = ' + value + ';\n';
return code;
} else if (mode == 'INSERT') {
code += 'array_splice(' + list + ', ' + xVar + ', 0, ' + value + ');\n';
return code;
}
}
throw 'Unhandled combination (lists_setIndex).';
};
Blockly.PHP['lists_getSublist'] = function(block) {
// Get sublist.
var list = Blockly.PHP.valueToCode(block, 'LIST',
Blockly.PHP.ORDER_MEMBER) || 'array()';
var where1 = block.getFieldValue('WHERE1');
var where2 = block.getFieldValue('WHERE2');
var at1 = Blockly.PHP.valueToCode(block, 'AT1',
Blockly.PHP.ORDER_NONE) || '1';
var at2 = Blockly.PHP.valueToCode(block, 'AT2',
Blockly.PHP.ORDER_NONE) || '1';
if (where1 == 'FIRST' && where2 == 'LAST') {
var code = list;
} else {
var functionName = Blockly.PHP.provideFunction_(
'lists_get_sublist',
[ 'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'($list, $where1, $at1, $where2, $at2) {',
' if ($where2 == \'FROM_START\') {',
' $at2--;',
' } else if ($where2 == \'FROM_END\') {',
' $at2 = $at2 - $at1;',
' } else if ($where2 == \'FIRST\') {',
' $at2 = 0;',
' } else if ($where2 == \'LAST\') {',
' $at2 = count($list);',
' } else {',
' throw \'Unhandled option (lists_getSublist).\';',
' }',
' if ($where1 == \'FROM_START\') {',
' $at1--;',
' } else if ($where1 == \'FROM_END\') {',
' $at1 = count($list) - $at1;',
' } else if ($where1 == \'FIRST\') {',
' $at1 = 0;',
' } else if ($where1 == \'LAST\') {',
' $at1 = count($list) - 1;',
' } else {',
' throw \'Unhandled option (lists_getSublist).\';',
' }',
' return array_slice($list, $at1, $at2);',
'}']);
var code = functionName + '(' + list + ', \'' +
where1 + '\', ' + at1 + ', \'' + where2 + '\', ' + at2 + ')';
}
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
};
Blockly.PHP['lists_sort'] = function(block) {
// Block for sorting a list.
var listCode = Blockly.PHP.valueToCode(block, 'LIST',
Blockly.PHP.ORDER_FUNCTION_CALL) || 'array()';
var direction = block.getFieldValue('DIRECTION') === '1' ? 1 : -1;
var type = block.getFieldValue('TYPE');
var functionName = Blockly.PHP.provideFunction_(
'lists_sort', [
'function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
'($list, $type, $direction) {',
' $sortCmpFuncs = array(',
' "NUMERIC" => "strnatcasecmp",',
' "TEXT" => "strcmp",',
' "IGNORE_CASE" => "strcasecmp"',
' );',
' $sortCmp = $sortCmpFuncs[$type];',
' $list2 = $list;', // Clone list.
' usort($list2, $sortCmp);',
' if ($direction == -1) {',
' $list2 = array_reverse($list2);',
' }',
' return $list2;',
'}']);
var sortCode = functionName +
'(' + listCode + ', "' + type + '", ' + direction + ')';
return [sortCode, Blockly.PHP.ORDER_FUNCTION_CALL];
};
Blockly.PHP['lists_split'] = function(block) {
// Block for splitting text into a list, or joining a list into text.
var value_input = Blockly.PHP.valueToCode(block, 'INPUT',
Blockly.PHP.ORDER_MEMBER);
var value_delim = Blockly.PHP.valueToCode(block, 'DELIM',
Blockly.PHP.ORDER_NONE) || '\'\'';
var mode = block.getFieldValue('MODE');
if (mode == 'SPLIT') {
if (!value_input) {
value_input = '\'\'';
}
var functionName = 'explode';
} else if (mode == 'JOIN') {
if (!value_input) {
value_input = 'array()';
}
var functionName = 'implode';
} else {
throw 'Unknown mode: ' + mode;
}
var code = functionName + '(' + value_delim + ', ' + value_input + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
};
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