97 lines
2.6 KiB
JavaScript
97 lines
2.6 KiB
JavaScript
/*\
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title: $:/core/modules/parsers/wikiparser/rules/fnprocdef.js
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type: application/javascript
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module-type: wikirule
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Wiki pragma rule for function, procedure and widget definitions
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```
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\function name(param:defaultvalue,param2:defaultvalue)
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definition text
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\end
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\procedure name(param:defaultvalue,param2:defaultvalue)
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definition text
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\end
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\widget $mywidget(param:defaultvalue,param2:defaultvalue)
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definition text
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\end
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```
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\*/
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(function(){
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/*jslint node: true, browser: true */
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/*global $tw: false */
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"use strict";
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exports.name = "fnprocdef";
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exports.types = {pragma: true};
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/*
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Instantiate parse rule
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*/
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exports.init = function(parser) {
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this.parser = parser;
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// Regexp to match
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this.matchRegExp = /\\(function|procedure|widget)\s+([^(\s]+)\((\s*([^)]*))?\)(\s*\r?\n)?/mg;
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};
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/*
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Parse the most recent match
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*/
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exports.parse = function() {
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// Move past the macro name and parameters
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this.parser.pos = this.matchRegExp.lastIndex;
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// Parse the parameters
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var params = [];
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if(this.match[3]) {
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params = $tw.utils.parseParameterDefinition(this.match[4]);
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}
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// Is the remainder of the line blank after the parameter close paren?
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var reEnd;
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if(this.match[5]) {
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// If so, it is a multiline definition and the end of the body is marked with \end
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reEnd = new RegExp("((:?^|\\r?\\n)[^\\S\\n\\r]*\\\\end[^\\S\\n\\r]*(?:" + $tw.utils.escapeRegExp(this.match[2]) + ")?(?:$|\\r?\\n))","mg");
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} else {
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// Otherwise, the end of the definition is marked by the end of the line
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reEnd = /($|\r?\n)/mg;
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// Move past any whitespace
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this.parser.pos = $tw.utils.skipWhiteSpace(this.parser.source,this.parser.pos);
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}
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// Find the end of the definition
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reEnd.lastIndex = this.parser.pos;
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var text,
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endMatch = reEnd.exec(this.parser.source);
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if(endMatch) {
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text = this.parser.source.substring(this.parser.pos,endMatch.index);
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this.parser.pos = endMatch.index + endMatch[0].length;
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} else {
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// We didn't find the end of the definition, so we'll make it blank
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text = "";
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}
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// Save the macro definition
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var parseTreeNodes = [{
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type: "set",
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attributes: {},
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children: [],
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params: params
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}];
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$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"name",this.match[2]);
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$tw.utils.addAttributeToParseTreeNode(parseTreeNodes[0],"value",text);
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if(this.match[1] === "function") {
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parseTreeNodes[0].isFunctionDefinition = true;
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} else if(this.match[1] === "procedure") {
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parseTreeNodes[0].isProcedureDefinition = true;
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} else if(this.match[1] === "widget") {
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parseTreeNodes[0].isWidgetDefinition = true;
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}
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if(this.parser.configTrimWhiteSpace) {
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parseTreeNodes[0].configTrimWhiteSpace = true;
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}
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return parseTreeNodes;
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};
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})();
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