mirror of
https://github.com/google/blockly.git
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280 lines
9.7 KiB
JavaScript
280 lines
9.7 KiB
JavaScript
/**
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* @license
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* Copyright 2015 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @fileoverview Generating PHP for text blocks.
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*/
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'use strict';
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goog.provide('Blockly.PHP.texts');
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goog.require('Blockly.PHP');
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Blockly.PHP['text'] = function(block) {
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// Text value.
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const code = Blockly.PHP.quote_(block.getFieldValue('TEXT'));
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return [code, Blockly.PHP.ORDER_ATOMIC];
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};
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Blockly.PHP['text_multiline'] = function(block) {
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// Text value.
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const code = Blockly.PHP.multiline_quote_(block.getFieldValue('TEXT'));
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const order = code.indexOf('.') !== -1 ? Blockly.PHP.ORDER_STRING_CONCAT :
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Blockly.PHP.ORDER_ATOMIC;
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return [code, order];
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};
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Blockly.PHP['text_join'] = function(block) {
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// Create a string made up of any number of elements of any type.
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if (block.itemCount_ === 0) {
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return ['\'\'', Blockly.PHP.ORDER_ATOMIC];
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} else if (block.itemCount_ === 1) {
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const element = Blockly.PHP.valueToCode(block, 'ADD0',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const code = element;
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return [code, Blockly.PHP.ORDER_NONE];
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} else if (block.itemCount_ === 2) {
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const element0 = Blockly.PHP.valueToCode(block, 'ADD0',
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Blockly.PHP.ORDER_STRING_CONCAT) || '\'\'';
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const element1 = Blockly.PHP.valueToCode(block, 'ADD1',
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Blockly.PHP.ORDER_STRING_CONCAT) || '\'\'';
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const code = element0 + ' . ' + element1;
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return [code, Blockly.PHP.ORDER_STRING_CONCAT];
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} else {
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const elements = new Array(block.itemCount_);
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for (let i = 0; i < block.itemCount_; i++) {
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elements[i] = Blockly.PHP.valueToCode(block, 'ADD' + i,
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Blockly.PHP.ORDER_NONE) || '\'\'';
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}
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const code = 'implode(\'\', array(' + elements.join(',') + '))';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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};
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Blockly.PHP['text_append'] = function(block) {
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// Append to a variable in place.
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const varName = Blockly.PHP.nameDB_.getName(
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block.getFieldValue('VAR'), Blockly.VARIABLE_CATEGORY_NAME);
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const value = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_ASSIGNMENT) || '\'\'';
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return varName + ' .= ' + value + ';\n';
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};
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Blockly.PHP['text_length'] = function(block) {
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// String or array length.
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const functionName = Blockly.PHP.provideFunction_(
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'length',
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['function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ + '($value) {',
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' if (is_string($value)) {',
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' return strlen($value);',
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' } else {',
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' return count($value);',
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' }',
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'}']);
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const text = Blockly.PHP.valueToCode(block, 'VALUE',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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return [functionName + '(' + text + ')', Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['text_isEmpty'] = function(block) {
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// Is the string null or array empty?
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const text = Blockly.PHP.valueToCode(block, 'VALUE',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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return ['empty(' + text + ')', Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['text_indexOf'] = function(block) {
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// Search the text for a substring.
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const operator = block.getFieldValue('END') === 'FIRST' ?
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'strpos' : 'strrpos';
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const substring = Blockly.PHP.valueToCode(block, 'FIND',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const text = Blockly.PHP.valueToCode(block, 'VALUE',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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let errorIndex = ' -1';
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let indexAdjustment = '';
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if (block.workspace.options.oneBasedIndex) {
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errorIndex = ' 0';
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indexAdjustment = ' + 1';
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}
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const functionName = Blockly.PHP.provideFunction_(
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block.getFieldValue('END') === 'FIRST' ?
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'text_indexOf' : 'text_lastIndexOf',
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['function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
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'($text, $search) {',
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' $pos = ' + operator + '($text, $search);',
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' return $pos === false ? ' + errorIndex + ' : $pos' +
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indexAdjustment + ';',
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'}']);
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const code = functionName + '(' + text + ', ' + substring + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['text_charAt'] = function(block) {
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// Get letter at index.
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const where = block.getFieldValue('WHERE') || 'FROM_START';
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const textOrder = (where === 'RANDOM') ? Blockly.PHP.ORDER_NONE :
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Blockly.PHP.ORDER_NONE;
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const text = Blockly.PHP.valueToCode(block, 'VALUE', textOrder) || '\'\'';
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switch (where) {
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case 'FIRST': {
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const code = 'substr(' + text + ', 0, 1)';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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case 'LAST': {
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const code = 'substr(' + text + ', -1)';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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case 'FROM_START': {
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const at = Blockly.PHP.getAdjusted(block, 'AT');
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const code = 'substr(' + text + ', ' + at + ', 1)';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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case 'FROM_END': {
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const at = Blockly.PHP.getAdjusted(block, 'AT', 1, true);
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const code = 'substr(' + text + ', ' + at + ', 1)';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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case 'RANDOM': {
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const functionName = Blockly.PHP.provideFunction_(
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'text_random_letter',
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['function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ + '($text) {',
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' return $text[rand(0, strlen($text) - 1)];',
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'}']);
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const code = functionName + '(' + text + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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}
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throw Error('Unhandled option (text_charAt).');
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};
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Blockly.PHP['text_getSubstring'] = function(block) {
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// Get substring.
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const where1 = block.getFieldValue('WHERE1');
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const where2 = block.getFieldValue('WHERE2');
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const text = Blockly.PHP.valueToCode(block, 'STRING',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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if (where1 === 'FIRST' && where2 === 'LAST') {
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const code = text;
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return [code, Blockly.PHP.ORDER_NONE];
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} else {
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const at1 = Blockly.PHP.getAdjusted(block, 'AT1');
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const at2 = Blockly.PHP.getAdjusted(block, 'AT2');
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const functionName = Blockly.PHP.provideFunction_(
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'text_get_substring',
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['function ' + Blockly.PHP.FUNCTION_NAME_PLACEHOLDER_ +
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'($text, $where1, $at1, $where2, $at2) {',
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' if ($where1 == \'FROM_END\') {',
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' $at1 = strlen($text) - 1 - $at1;',
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' } else if ($where1 == \'FIRST\') {',
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' $at1 = 0;',
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' } else if ($where1 != \'FROM_START\') {',
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' throw new Exception(\'Unhandled option (text_get_substring).\');',
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' }',
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' $length = 0;',
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' if ($where2 == \'FROM_START\') {',
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' $length = $at2 - $at1 + 1;',
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' } else if ($where2 == \'FROM_END\') {',
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' $length = strlen($text) - $at1 - $at2;',
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' } else if ($where2 == \'LAST\') {',
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' $length = strlen($text) - $at1;',
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' } else {',
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' throw new Exception(\'Unhandled option (text_get_substring).\');',
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' }',
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' return substr($text, $at1, $length);',
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'}']);
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const code = functionName + '(' + text + ', \'' +
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where1 + '\', ' + at1 + ', \'' + where2 + '\', ' + at2 + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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}
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};
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Blockly.PHP['text_changeCase'] = function(block) {
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// Change capitalization.
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const text = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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let code;
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if (block.getFieldValue('CASE') === 'UPPERCASE') {
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code = 'strtoupper(' + text + ')';
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} else if (block.getFieldValue('CASE') === 'LOWERCASE') {
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code = 'strtolower(' + text + ')';
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} else if (block.getFieldValue('CASE') === 'TITLECASE') {
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code = 'ucwords(strtolower(' + text + '))';
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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['text_trim'] = function(block) {
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// Trim spaces.
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const OPERATORS = {
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'LEFT': 'ltrim',
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'RIGHT': 'rtrim',
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'BOTH': 'trim'
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};
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const operator = OPERATORS[block.getFieldValue('MODE')];
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const text = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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return [operator + '(' + text + ')', Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['text_print'] = function(block) {
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// Print statement.
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const msg = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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return 'print(' + msg + ');\n';
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};
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Blockly.PHP['text_prompt_ext'] = function(block) {
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// Prompt function.
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let msg;
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if (block.getField('TEXT')) {
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// Internal message.
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msg = Blockly.PHP.quote_(block.getFieldValue('TEXT'));
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} else {
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// External message.
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msg = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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}
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let code = 'readline(' + msg + ')';
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const toNumber = block.getFieldValue('TYPE') === 'NUMBER';
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if (toNumber) {
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code = 'floatval(' + code + ')';
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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['text_prompt'] = Blockly.PHP['text_prompt_ext'];
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Blockly.PHP['text_count'] = function(block) {
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const text = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const sub = Blockly.PHP.valueToCode(block, 'SUB',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const code = 'strlen(' + sub + ') === 0'
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+ ' ? strlen(' + text + ') + 1'
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+ ' : substr_count(' + text + ', ' + sub + ')';
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return [code, Blockly.PHP.ORDER_CONDITIONAL];
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};
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Blockly.PHP['text_replace'] = function(block) {
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const text = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const from = Blockly.PHP.valueToCode(block, 'FROM',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const to = Blockly.PHP.valueToCode(block, 'TO',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const code = 'str_replace(' + from + ', ' + to + ', ' + text + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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Blockly.PHP['text_reverse'] = function(block) {
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const text = Blockly.PHP.valueToCode(block, 'TEXT',
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Blockly.PHP.ORDER_NONE) || '\'\'';
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const code = 'strrev(' + text + ')';
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return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
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};
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