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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 procedure blocks.
* @author daarond@gmail.com (Daaron Dwyer)
*/
'use strict';
goog.provide('Blockly.PHP.procedures');
goog.require('Blockly.PHP');
Blockly.PHP['procedures_defreturn'] = function(block) {
// Define a procedure with a return value.
// First, add a 'global' statement for every variable that is not shadowed by
// a local parameter.
var globals = [];
var varName;
var workspace = block.workspace;
var variables = Blockly.Variables.allUsedVarModels(workspace) || [];
for (var i = 0, variable; variable = variables[i]; i++) {
varName = variable.name;
if (block.arguments_.indexOf(varName) == -1) {
globals.push(Blockly.PHP.variableDB_.getName(varName,
Blockly.Variables.NAME_TYPE));
}
}
// Add developer variables.
var devVarList = Blockly.Variables.allDeveloperVariables(workspace);
for (var i = 0; i < devVarList.length; i++) {
globals.push(Blockly.PHP.variableDB_.getName(devVarList[i],
Blockly.Names.DEVELOPER_VARIABLE_TYPE));
}
globals = globals.length ?
Blockly.PHP.INDENT + 'global ' + globals.join(', ') + ';\n' : '';
var funcName = Blockly.PHP.variableDB_.getName(
block.getFieldValue('NAME'), Blockly.Procedures.NAME_TYPE);
var branch = Blockly.PHP.statementToCode(block, 'STACK');
if (Blockly.PHP.STATEMENT_PREFIX) {
var id = block.id.replace(/\$/g, '$$$$'); // Issue 251.
branch = Blockly.PHP.prefixLines(
Blockly.PHP.STATEMENT_PREFIX.replace(
/%1/g, '\'' + id + '\''), Blockly.PHP.INDENT) + branch;
}
if (Blockly.PHP.INFINITE_LOOP_TRAP) {
branch = Blockly.PHP.INFINITE_LOOP_TRAP.replace(/%1/g,
'\'' + block.id + '\'') + branch;
}
var returnValue = Blockly.PHP.valueToCode(block, 'RETURN',
Blockly.PHP.ORDER_NONE) || '';
if (returnValue) {
returnValue = Blockly.PHP.INDENT + 'return ' + returnValue + ';\n';
}
var args = [];
for (var i = 0; i < block.arguments_.length; i++) {
args[i] = Blockly.PHP.variableDB_.getName(block.arguments_[i],
Blockly.Variables.NAME_TYPE);
}
var code = 'function ' + funcName + '(' + args.join(', ') + ') {\n' +
globals + branch + returnValue + '}';
code = Blockly.PHP.scrub_(block, code);
// Add % so as not to collide with helper functions in definitions list.
Blockly.PHP.definitions_['%' + funcName] = code;
return null;
};
// Defining a procedure without a return value uses the same generator as
// a procedure with a return value.
Blockly.PHP['procedures_defnoreturn'] =
Blockly.PHP['procedures_defreturn'];
Blockly.PHP['procedures_callreturn'] = function(block) {
// Call a procedure with a return value.
var funcName = Blockly.PHP.variableDB_.getName(
block.getFieldValue('NAME'), Blockly.Procedures.NAME_TYPE);
var args = [];
for (var i = 0; i < block.arguments_.length; i++) {
args[i] = Blockly.PHP.valueToCode(block, 'ARG' + i,
Blockly.PHP.ORDER_COMMA) || 'null';
}
var code = funcName + '(' + args.join(', ') + ')';
return [code, Blockly.PHP.ORDER_FUNCTION_CALL];
};
Blockly.PHP['procedures_callnoreturn'] = function(block) {
// Call a procedure with no return value.
var funcName = Blockly.PHP.variableDB_.getName(
block.getFieldValue('NAME'), Blockly.Procedures.NAME_TYPE);
var args = [];
for (var i = 0; i < block.arguments_.length; i++) {
args[i] = Blockly.PHP.valueToCode(block, 'ARG' + i,
Blockly.PHP.ORDER_COMMA) || 'null';
}
var code = funcName + '(' + args.join(', ') + ');\n';
return code;
};
Blockly.PHP['procedures_ifreturn'] = function(block) {
// Conditionally return value from a procedure.
var condition = Blockly.PHP.valueToCode(block, 'CONDITION',
Blockly.PHP.ORDER_NONE) || 'false';
var code = 'if (' + condition + ') {\n';
if (block.hasReturnValue_) {
var value = Blockly.PHP.valueToCode(block, 'VALUE',
Blockly.PHP.ORDER_NONE) || 'null';
code += Blockly.PHP.INDENT + 'return ' + value + ';\n';
} else {
code += Blockly.PHP.INDENT + 'return;\n';
}
code += '}\n';
return code;
};