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* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* 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.
*/
'use strict';
// MAIN //
/**
* Generates a source code body for synchronous execution.
*
* ## Notes
*
* - Example output:
*
* ```javascript
* "use strict";
*
* var ctx = this;
* var t1, d1, i1;
*
* // {{before}}
*
* t1 = ctx.tic();
* for ( i1 = 0; i1 < 1e6; i1++ ) {
* // {{code}}
* }
* d1 = ctx.toc( t1 );
*
* // {{after}}
*
* ctx.done( null, d1 );
*
* return 1;
* ```
*
* @private
* @param {number} id - id
* @param {string} code - code to time
* @param {Options} opts - function options
* @param {string} opts.before - setup code
* @param {string} opts.after - cleanup code
* @param {PositiveInteger} opts.iterations - number of iterations
* @returns {string} source code body
*/
function generate( id, code, opts ) {
var src;
var ctx;
var t;
var d;
var i;
src = '"use strict";';
// Declare variables:
ctx = '__ctx$'+id+'__';
i = '__i$'+id+'__';
t = '__t$'+id+'__';
d = '__d$'+id+'__';
src += 'var '+ctx+' = this;';
src += 'var '+t+','+d+','+i+';';
// Insert the setup code:
src += opts.before+';';
// Start the timer:
src += t+' = '+ctx+'.tic();';
// Create the loop:
src += 'for ( '+i+'= 0; '+i+' < '+opts.iterations+'; '+i+'++ ) {';
// Insert the loop body:
src += code+';';
// Close the loop:
src += '}';
// Stop the timer:
src += d+' = '+ctx+'.toc( '+t+' );';
// Insert the cleanup code:
src += opts.after+';';
// Return results:
src += ctx+'.done( null, '+d+' );';
// Return a value:
src += 'return '+id+';';
return src;
}
// EXPORTS //
module.exports = generate;
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