From a34166e0aa8182a702f555ddc6e483f99d603169 Mon Sep 17 00:00:00 2001 From: Titus Wormer Date: Fri, 27 Mar 2015 20:19:39 +0100 Subject: [PATCH] Add support for `onparse`, `onstringify` callbacks --- Readme.md | 4 +++- index.js | 11 ++++++++++ mdast-yaml.js | 11 ++++++++++ mdast-yaml.min.js | 2 +- test/index.js | 56 +++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 82 insertions(+), 2 deletions(-) diff --git a/Readme.md b/Readme.md index 834653d..ae09a13 100644 --- a/Readme.md +++ b/Readme.md @@ -109,7 +109,9 @@ Adds a `yaml` property to [**YAML**](https://github.com/wooorm/mdast/blob/master * `library` (`Object?`, default: [`nodeca/js-yaml`](https://github.com/nodeca/js-yaml)); * `parse` (`string?`, default [`"safeLoad"`](https://github.com/nodeca/js-yaml#safeload-string---options-)); * `stringify` (`string?`, default [`"safeDump"`](https://github.com/nodeca/js-yaml#safedump-object---options-)); - * `prettify` (`boolean?`, default: `true`) — When true, the node’s content will be overwritten by the result of `library[stringify](node.yaml)`. + * `prettify` (`boolean?`, default: `true`) — When true, the node’s content will be overwritten by the result of `library[stringify](node.yaml)`; + * `onparse` (`function(Node)`, default `function () {}`) — Invoked when YAML is parsed, during parsing; + * `onstringify` (`function(Node)`, default `function () {}`) — Invoked when YAML is stringified, during stringification. ## License diff --git a/index.js b/index.js index 5db11dd..213cf07 100644 --- a/index.js +++ b/index.js @@ -10,6 +10,11 @@ try { jsYAML = require('js-yaml'); } catch (exception) {} +/** + * No-operation. + */ +function noop() {} + /** * Remove trailing newline. * @@ -31,6 +36,7 @@ function removeLastLine(value) { function parse(tokenize, settings) { var parser = settings.library || jsYAML; var method = settings.parse || 'safeLoad'; + var callback = settings.onparse || noop; /** * Parse YAML, if available, using the bound @@ -52,6 +58,8 @@ function parse(tokenize, settings) { }); eat($0)(node); + + callback(node, this); }; } @@ -64,6 +72,7 @@ function parse(tokenize, settings) { function stringify(compile, settings) { var stringifier = settings.library || jsYAML; var method = settings.stringify || 'safeDump'; + var callback = settings.onstringify || noop; if (settings.prettify === false) { return compile; @@ -81,6 +90,8 @@ function stringify(compile, settings) { node.value = removeLastLine(stringifier[method](node.yaml)); } + callback(node, this); + return compile.apply(this, arguments); }; } diff --git a/mdast-yaml.js b/mdast-yaml.js index 9c3c23d..658bf96 100644 --- a/mdast-yaml.js +++ b/mdast-yaml.js @@ -11,6 +11,11 @@ try { jsYAML = require('js-yaml'); } catch (exception) {} +/** + * No-operation. + */ +function noop() {} + /** * Remove trailing newline. * @@ -32,6 +37,7 @@ function removeLastLine(value) { function parse(tokenize, settings) { var parser = settings.library || jsYAML; var method = settings.parse || 'safeLoad'; + var callback = settings.onparse || noop; /** * Parse YAML, if available, using the bound @@ -53,6 +59,8 @@ function parse(tokenize, settings) { }); eat($0)(node); + + callback(node, this); }; } @@ -65,6 +73,7 @@ function parse(tokenize, settings) { function stringify(compile, settings) { var stringifier = settings.library || jsYAML; var method = settings.stringify || 'safeDump'; + var callback = settings.onstringify || noop; if (settings.prettify === false) { return compile; @@ -82,6 +91,8 @@ function stringify(compile, settings) { node.value = removeLastLine(stringifier[method](node.yaml)); } + callback(node, this); + return compile.apply(this, arguments); }; } diff --git a/mdast-yaml.min.js b/mdast-yaml.min.js index 18f16e7..f0c6c60 100644 --- a/mdast-yaml.min.js +++ b/mdast-yaml.min.js @@ -1 +1 @@ -!function(b,a){typeof exports==='object'&&typeof module!=='undefined'?module.exports=b():typeof define==='function'&&define.amd?define([],b):(typeof window!=='undefined'?a=window:typeof global!=='undefined'?a=global:typeof self!=='undefined'?a=self:a=this,a.mdastYAML=b())}(function(){var a;return function a(b,c,e){function f(d,k){if(!c[d]){if(!b[d]){var i=typeof require=='function'&&require;if(!k&&i)return i(d,!0);if(g)return g(d,!0);var j=new Error("Cannot find module '"+d+"'");throw j.code='MODULE_NOT_FOUND',j}var h=c[d]={exports:{}};b[d][0].call(h.exports,function(c){var a=b[d][1][c];return f(a?a:c)},h,h.exports,a,b,c,e)}return c[d].exports}var g=typeof require=='function'&&require;for(var d=0;d1024&&(c+='? 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d,h,e,i=b.bottomRightStack,c,f,a=i[i.length-1];if(this.type===g.Program&&this.body.length>0)return;if(b.trailingComments.length>0){for(e=[],c=b.trailingComments.length-1;c>=0;--c)f=b.trailingComments[c],f.range[0]>=this.range[1]&&(e.unshift(f),b.trailingComments.splice(c,1));b.trailingComments=[]}else a&&a.trailingComments&&a.trailingComments[0].range[0]>=this.range[1]&&(e=a.trailingComments,delete a.trailingComments);if(a)while(a&&a.range[0]>=this.range[0])d=a,a=i.pop();if(d)d.leadingComments&&d.leadingComments[d.leadingComments.length-1].range[1]<=this.range[0]&&(this.leadingComments=d.leadingComments,d.leadingComments=undefined);else if(b.leadingComments.length>0)for(h=[],c=b.leadingComments.length-1;c>=0;--c)f=b.leadingComments[c],f.range[1]<=this.range[0]&&(h.unshift(f),b.leadingComments.splice(c,1));h&&h.length>0&&(this.leadingComments=h),e&&e.length>0&&(this.trailingComments=e),i.push(this)},finish:function(){b.range&&(this.range[1]=a),b.loc&&(this.loc.end=new af,b.source&&(this.loc.source=b.source)),b.attachComment&&this.processComment()},finishArrayExpression:function(a){return this.type=g.ArrayExpression,this.elements=a,this.finish(),this},finishArrowFunctionExpression:function(a,b,c,d){return this.type=g.ArrowFunctionExpression,this.id=null,this.params=a,this.defaults=b,this.body=c,this.rest=null,this.generator=!1,this.expression=d,this.finish(),this},finishAssignmentExpression:function(a,b,c){return this.type=g.AssignmentExpression,this.operator=a,this.left=b,this.right=c,this.finish(),this},finishBinaryExpression:function(a,b,c){return this.type=a==='||'||a==='&&'?g.LogicalExpression:g.BinaryExpression,this.operator=a,this.left=b,this.right=c,this.finish(),this},finishBlockStatement:function(a){return this.type=g.BlockStatement,this.body=a,this.finish(),this},finishBreakStatement:function(a){return this.type=g.BreakStatement,this.label=a,this.finish(),this},finishCallExpression:function(a,b){return 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this.type=g.Property,this.key=b,this.value=c,this.kind=a,this.method=d,this.shorthand=e,this.finish(),this},finishReturnStatement:function(a){return this.type=g.ReturnStatement,this.argument=a,this.finish(),this},finishSequenceExpression:function(a){return this.type=g.SequenceExpression,this.expressions=a,this.finish(),this},finishSwitchCase:function(a,b){return this.type=g.SwitchCase,this.test=a,this.consequent=b,this.finish(),this},finishSwitchStatement:function(a,b){return this.type=g.SwitchStatement,this.discriminant=a,this.cases=b,this.finish(),this},finishThisExpression:function(){return this.type=g.ThisExpression,this.finish(),this},finishThrowStatement:function(a){return this.type=g.ThrowStatement,this.argument=a,this.finish(),this},finishTryStatement:function(a,b,c,d){return this.type=g.TryStatement,this.block=a,this.guardedHandlers=b,this.handlers=c,this.finalizer=d,this.finish(),this},finishUnaryExpression:function(a,b){return this.type=a==='++'||a==='--'?g.UpdateExpression:g.UnaryExpression,this.operator=a,this.argument=b,this.prefix=!0,this.finish(),this},finishVariableDeclaration:function(a,b){return this.type=g.VariableDeclaration,this.declarations=a,this.kind=b,this.finish(),this},finishVariableDeclarator:function(a,b){return this.type=g.VariableDeclarator,this.id=a,this.init=b,this.finish(),this},finishWhileStatement:function(a,b){return this.type=g.WhileStatement,this.test=a,this.body=b,this.finish(),this},finishWithStatement:function(a,b){return this.type=g.WithStatement,this.object=a,this.body=b,this.finish(),this}},U.version='2.0.0',U.tokenize=b3,U.parse=b4,U.Syntax=function(b,a){a={},typeof Object.create==='function'&&(a=Object.create(null));for(b in g)g.hasOwnProperty(b)&&(a[b]=g[b]);return typeof Object.freeze==='function'&&Object.freeze(a),a}()})},{}]},{},[1])(1)}) diff --git a/test/index.js b/test/index.js index 7c6e7c4..328b267 100644 --- a/test/index.js +++ b/test/index.js @@ -143,4 +143,60 @@ describe('mdast-yaml()', function () { assert('yaml' in ast); assert(ast.yaml === 'hello'); }); + + it('should accept `onparse`', function () { + var isInvoked; + + /** + * Assertion. + */ + function onparse(node) { + assert(node.type === 'yaml'); + assert(node.value === '"hello": "world"'); + assert(node.yaml.hello === 'world'); + + isInvoked = true; + } + + yaml([ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n'), { + 'onparse': onparse + }); + + assert(isInvoked === true); + }); + + it('should accept `onstringify`', function () { + var isInvoked; + + /** + * Assertion. + */ + function onstringify(node) { + assert(node.type === 'yaml'); + assert(node.value === 'hello: world'); + assert(node.yaml.hello === 'world'); + + isInvoked = true; + } + + yaml([ + '---', + '"hello": "world"', + '---', + '', + '# Foo bar', + '' + ].join('\n'), { + 'onstringify': onstringify + }); + + assert(isInvoked === true); + }); });