mirror of
https://github.com/Jermolene/TiddlyWiki5
synced 2024-11-23 10:07:19 +00:00
Refactoring tiddler rendering
The new approach is to compile each tiddler into a JavaScript function that renders it at run time. Lots of changes over the next few days, and not all the tests are going to survive at all times...
This commit is contained in:
Jeremy Ruston
parent
04dc396f2a
commit
762985a846
316
js/WikiTextCompiler.js
Normal file
316
js/WikiTextCompiler.js
Normal file
@ -0,0 +1,316 @@
|
||||
/*\
|
||||
title: js/WikiTextCompiler.js
|
||||
|
||||
\*/
|
||||
(function(){
|
||||
|
||||
/*jslint node: true */
|
||||
"use strict";
|
||||
|
||||
var ArgParser = require("./ArgParser.js").ArgParser,
|
||||
utils = require("./Utils.js"),
|
||||
util = require("util");
|
||||
|
||||
var WikiTextCompiler = function(store,title,parser) {
|
||||
this.parser = parser;
|
||||
this.store = store;
|
||||
this.title = title;
|
||||
};
|
||||
|
||||
WikiTextCompiler.prototype.compile = function(type,treenode) {
|
||||
if(type === "text/html") {
|
||||
return this.compileAsHtml(treenode);
|
||||
} else if(type === "text/plain") {
|
||||
return this.compileAsHtml(treenode);
|
||||
} else {
|
||||
return null;
|
||||
}
|
||||
};
|
||||
|
||||
WikiTextCompiler.prototype.compileAsHtml = function(treenode) {
|
||||
var me = this,
|
||||
output = [],
|
||||
compileSubTree;
|
||||
var pushString = function(s) {
|
||||
var last = output[output.length-1];
|
||||
if(output.length > 0 && last.type === "StringLiterals") {
|
||||
last.value.push(s);
|
||||
} else if (output.length > 0 && last.type === "StringLiteral") {
|
||||
last.type = "StringLiterals";
|
||||
last.value = [last.value,s];
|
||||
} else {
|
||||
output.push({type: "StringLiteral", value: s});
|
||||
}
|
||||
};
|
||||
var compileElement = function(element, options) {
|
||||
options = options || {};
|
||||
var tagBits = [element.type];
|
||||
if(element.attributes) {
|
||||
for(var a in element.attributes) {
|
||||
var r = element.attributes[a];
|
||||
if(a === "style") {
|
||||
var s = [];
|
||||
for(var t in r) {
|
||||
s.push(t + ":" + r[t] + ";");
|
||||
}
|
||||
r = s.join("");
|
||||
}
|
||||
tagBits.push(a + "=\"" + utils.htmlEncode(r) + "\"");
|
||||
}
|
||||
}
|
||||
pushString("<" + tagBits.join(" ") + (options.selfClosing ? " /" : ""));
|
||||
if(options.insertAfterAttributes) {
|
||||
output.push(options.insertAfterAttributes);
|
||||
}
|
||||
pushString(">");
|
||||
if(!options.selfClosing) {
|
||||
if(element.children) {
|
||||
compileSubTree(element.children);
|
||||
}
|
||||
pushString("</" + element.type + ">");
|
||||
}
|
||||
};
|
||||
var compileMacroCall = function(name,params) {
|
||||
var macro = me.store.macros[name];
|
||||
if(macro) {
|
||||
var args = new ArgParser(params,{defaultName: "anon"}),
|
||||
paramsProps = {};
|
||||
var insertParam = function(name,arg) {
|
||||
if(arg.evaluated) {
|
||||
var prog = me.store.sandbox.parse(arg.string);
|
||||
paramsProps[m] = prog.elements[0];
|
||||
} else {
|
||||
paramsProps[m] = {type: "StringLiteral", value: arg.string};
|
||||
}
|
||||
};
|
||||
for(var m in macro.params) {
|
||||
var param = macro.params[m];
|
||||
if("byPos" in param && args.byPos[param.byPos]) {
|
||||
insertParam(m,args.byPos[param.byPos].v);
|
||||
} else if("byName" in param) {
|
||||
var arg = args.getValueByName(m);
|
||||
if(!arg && param.byName === "default") {
|
||||
arg = args.getValueByName("anon");
|
||||
}
|
||||
if(arg) {
|
||||
insertParam(m,arg);
|
||||
}
|
||||
}
|
||||
}
|
||||
var macroCall = {
|
||||
type: "FunctionCall",
|
||||
name: {
|
||||
type: "Function",
|
||||
name: null,
|
||||
params: ["params"],
|
||||
elements: []},
|
||||
"arguments": [ {
|
||||
type: "ObjectLiteral",
|
||||
properties: []
|
||||
}]
|
||||
};
|
||||
macroCall.name.elements = macro.code["text/html"].elements;
|
||||
for(m in paramsProps) {
|
||||
macroCall["arguments"][0].properties.push({
|
||||
type: "PropertyAssignment",
|
||||
name: m,
|
||||
value: paramsProps[m]
|
||||
});
|
||||
}
|
||||
output.push(macroCall);
|
||||
} else {
|
||||
pushString("<span class='error errorUnknownMacro'>Unknown macro '" + name + "'</span>");
|
||||
}
|
||||
};
|
||||
compileSubTree = function(tree) {
|
||||
for(var t=0; t<tree.length; t++) {
|
||||
switch(tree[t].type) {
|
||||
case "text":
|
||||
pushString(utils.htmlEncode(tree[t].value));
|
||||
break;
|
||||
case "entity":
|
||||
pushString(tree[t].value);
|
||||
break;
|
||||
case "br":
|
||||
case "img":
|
||||
compileElement(tree[t],{selfClosing: true}); // Self closing elements
|
||||
break;
|
||||
case "context":
|
||||
//compileSubTree(tree[t].children);
|
||||
break;
|
||||
case "macro":
|
||||
compileMacroCall(tree[t].name,tree[t].params);
|
||||
break;
|
||||
case "a":
|
||||
compileElement(tree[t],{
|
||||
insertAfterAttributes: {
|
||||
"type": "FunctionCall",
|
||||
"name": {
|
||||
"type": "PropertyAccess",
|
||||
"base": {
|
||||
"type": "Variable",
|
||||
"name": "store"},
|
||||
"name": "classesForLink"},
|
||||
"arguments":[{
|
||||
"type": "StringLiteral",
|
||||
"value": tree[t].attributes.href}]}
|
||||
});
|
||||
break;
|
||||
default:
|
||||
compileElement(tree[t]);
|
||||
break;
|
||||
}
|
||||
}
|
||||
};
|
||||
// Compile the wiki parse tree into a javascript parse tree
|
||||
compileSubTree(treenode);
|
||||
// And then render the javascript parse tree back into JavaScript code
|
||||
return compileJavaScript(
|
||||
[
|
||||
{
|
||||
type: "Function",
|
||||
name: null,
|
||||
params: ["tiddler","store","utils"],
|
||||
elements: [
|
||||
{
|
||||
type: "ReturnStatement",
|
||||
value: {
|
||||
type: "FunctionCall",
|
||||
name: {
|
||||
type: "PropertyAccess",
|
||||
base: {
|
||||
type: "ArrayLiteral",
|
||||
elements: output
|
||||
},
|
||||
name: "join"
|
||||
},
|
||||
"arguments": [ {
|
||||
type: "StringLiteral",
|
||||
value: ""
|
||||
}
|
||||
]
|
||||
}
|
||||
}
|
||||
]
|
||||
}
|
||||
]
|
||||
).join("");
|
||||
};
|
||||
|
||||
// Compile a javascript tree into an array of string fragments
|
||||
var compileJavaScript = function(tree) {
|
||||
var output = [];
|
||||
var compileJavaScriptNode = function(node) {
|
||||
var p;
|
||||
switch(node.type) {
|
||||
case "StringLiteral":
|
||||
output.push(utils.stringify(node.value));
|
||||
break;
|
||||
case "StringLiterals":
|
||||
output.push(utils.stringify(node.value.join("")));
|
||||
break;
|
||||
case "FunctionCall":
|
||||
output.push("(");
|
||||
compileJavaScriptNode(node.name);
|
||||
output.push(")");
|
||||
output.push("(");
|
||||
for(p=0; p<node["arguments"].length; p++) {
|
||||
if(p) {
|
||||
output.push(",");
|
||||
}
|
||||
compileJavaScriptNode(node["arguments"][p]);
|
||||
}
|
||||
output.push(")");
|
||||
break;
|
||||
case "PropertyAccess":
|
||||
compileJavaScriptNode(node.base);
|
||||
if(typeof node.name === "string") {
|
||||
output.push("." + node.name);
|
||||
} else {
|
||||
output.push("[");
|
||||
compileJavaScriptNode(node.name);
|
||||
output.push("]");
|
||||
}
|
||||
break;
|
||||
case "ArrayLiteral":
|
||||
output.push("[");
|
||||
for(p=0; p<node.elements.length; p++) {
|
||||
if(p) {
|
||||
output.push(",");
|
||||
}
|
||||
compileJavaScriptNode(node.elements[p]);
|
||||
}
|
||||
output.push("]");
|
||||
break;
|
||||
case "Variable":
|
||||
output.push(node.name);
|
||||
break;
|
||||
case "ObjectLiteral":
|
||||
output.push("{");
|
||||
for(p=0; p<node.properties.length; p++) {
|
||||
if(p) {
|
||||
output.push(",");
|
||||
}
|
||||
compileJavaScriptNode(node.properties[p]);
|
||||
}
|
||||
output.push("}");
|
||||
break;
|
||||
case "PropertyAssignment":
|
||||
output.push(node.name);
|
||||
output.push(":");
|
||||
compileJavaScriptNode(node.value);
|
||||
break;
|
||||
case "BinaryExpression":
|
||||
output.push("(");
|
||||
compileJavaScriptNode(node.left);
|
||||
output.push(")");
|
||||
output.push(node.operator);
|
||||
output.push("(");
|
||||
compileJavaScriptNode(node.right);
|
||||
output.push(")");
|
||||
break;
|
||||
case "NumericLiteral":
|
||||
output.push(node.value);
|
||||
break;
|
||||
case "Function":
|
||||
output.push("(");
|
||||
output.push("function ");
|
||||
if(node.name !== null) {
|
||||
output.push(node.name);
|
||||
}
|
||||
output.push("(");
|
||||
output.push(node.params.join(","));
|
||||
output.push(")");
|
||||
output.push("{");
|
||||
compileJavaScriptTree(node.elements);
|
||||
output.push("}");
|
||||
output.push(")");
|
||||
break;
|
||||
case "ReturnStatement":
|
||||
output.push("return ");
|
||||
compileJavaScriptNode(node.value);
|
||||
break;
|
||||
case "This":
|
||||
output.push("this");
|
||||
break;
|
||||
default:
|
||||
console.log(node);
|
||||
throw "Unknown JavaScript node type: " + node.type;
|
||||
break;
|
||||
}
|
||||
};
|
||||
var compileJavaScriptTree = function(tree) {
|
||||
for(var t=0; t<tree.length; t++) {
|
||||
if(t) {
|
||||
output.push(";\n");
|
||||
}
|
||||
compileJavaScriptNode(tree[t]);
|
||||
}
|
||||
};
|
||||
compileJavaScriptTree(tree);
|
||||
return output;
|
||||
};
|
||||
|
||||
exports.WikiTextCompiler = WikiTextCompiler;
|
||||
|
||||
})();
|
||||
Loading…
Reference in New Issue
Block a user