var parse = function()

in struts2-jst-plugin/src/main/resources/trimpath-template-1.0.38.js [164:228]
61 lines of code
19 McCabe index (conditional complexity)

    var parse = function(body, tmplName, etc) {
        body = cleanWhiteSpace(body);
        var funcText = [ "var TrimPath_Template_TEMP = function(_OUT, _CONTEXT, _FLAGS) { with (_CONTEXT) {" ];
        var state    = { stack: [], line: 1 };                              // TODO: Fix line number counting.
        var endStmtPrev = -1;
        while (endStmtPrev + 1 < body.length) {
            var begStmt = endStmtPrev;
            // Scan until we find some statement markup.
            begStmt = body.indexOf("{", begStmt + 1);
            while (begStmt >= 0) {
                var endStmt = body.indexOf('}', begStmt + 1);
                var stmt = body.substring(begStmt, endStmt);
                var blockrx = stmt.match(/^\{(cdata|minify|eval)/); // From B. Bittman, minify/eval/cdata implementation.
                if (blockrx) {
                    var blockType = blockrx[1]; 
                    var blockMarkerBeg = begStmt + blockType.length + 1;
                    var blockMarkerEnd = body.indexOf('}', blockMarkerBeg);
                    if (blockMarkerEnd >= 0) {
                        var blockMarker;
                        if( blockMarkerEnd - blockMarkerBeg <= 0 ) {
                            blockMarker = "{/" + blockType + "}";
                        } else {
                            blockMarker = body.substring(blockMarkerBeg + 1, blockMarkerEnd);
                        }                        
                        
                        var blockEnd = body.indexOf(blockMarker, blockMarkerEnd + 1);
                        if (blockEnd >= 0) {                            
                            emitSectionText(body.substring(endStmtPrev + 1, begStmt), funcText);
                            
                            var blockText = body.substring(blockMarkerEnd + 1, blockEnd);
                            if (blockType == 'cdata') {
                                emitText(blockText, funcText);
                            } else if (blockType == 'minify') {
                                emitText(scrubWhiteSpace(blockText), funcText);
                            } else if (blockType == 'eval') {
                                if (blockText != null && blockText.length > 0) // From B. Bittman, eval should not execute until process().
                                    funcText.push('_OUT.write( (function() { ' + blockText + ' })() );');
                            }
                            begStmt = endStmtPrev = blockEnd + blockMarker.length - 1;
                        }
                    }                        
                } else if (body.charAt(begStmt - 1) != '$' &&               // Not an expression or backslashed,
                           body.charAt(begStmt - 1) != '\\') {              // so check if it is a statement tag.
                    var offset = (body.charAt(begStmt + 1) == '/' ? 2 : 1); // Close tags offset of 2 skips '/'.
                                                                            // 10 is larger than maximum statement tag length.
                    if (body.substring(begStmt + offset, begStmt + 10 + offset).search(TrimPath.parseTemplate_etc.statementTag) == 0) 
                        break;                                              // Found a match.
                }
                begStmt = body.indexOf("{", begStmt + 1);
            }
            if (begStmt < 0)                              // In "a{for}c", begStmt will be 1.
                break;
            var endStmt = body.indexOf("}", begStmt + 1); // In "a{for}c", endStmt will be 5.
            if (endStmt < 0)
                break;
            emitSectionText(body.substring(endStmtPrev + 1, begStmt), funcText);
            emitStatement(body.substring(begStmt, endStmt + 1), state, funcText, tmplName, etc);
            endStmtPrev = endStmt;
        }
        emitSectionText(body.substring(endStmtPrev + 1), funcText);
        if (state.stack.length != 0)
            throw new etc.ParseError(tmplName, state.line, "unclosed, unmatched statement(s): " + state.stack.join(","));
        funcText.push("}}; TrimPath_Template_TEMP");
        return funcText.join("");
    }