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comparison trunk/src/dil/ast/DefaultVisitor.d @ 769:5e3ef1b2011c

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Added and improved documentation.
author Aziz K?ksal <aziz.koeksal@gmail.com>
date Sun, 17 Feb 2008 02:21:55 +0100
parents 0af3b145a405
children 3b34f6a95a27
comparison
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768:d84349a60f5c 769:5e3ef1b2011c
12 dil.ast.Statements, 12 dil.ast.Statements,
13 dil.ast.Types, 13 dil.ast.Types,
14 dil.ast.Parameters; 14 dil.ast.Parameters;
15 import common; 15 import common;
16 16
17 /++ 17 /// This huge template function, when instantiated for a certain node class,
18 This huge template function, when instantiated for a certain node class, 18 /// generates a body of calls to visit() on the subnodes.
19 generates a body of visit method calls on the subnodes.
20 +/
21 returnType!(T.stringof) visitDefault(T)(T t) 19 returnType!(T.stringof) visitDefault(T)(T t)
22 { 20 {
23 assert(t !is null, "node passed to visitDefault() is null"); 21 assert(t !is null, "node passed to visitDefault() is null");
24 //Stdout(t).newline; 22 //Stdout(t).newline;
25 23
346 else 344 else
347 assert(0, "Missing default visit method for: "~t.classinfo.name); 345 assert(0, "Missing default visit method for: "~t.classinfo.name);
348 return t; 346 return t;
349 } 347 }
350 348
351 /++ 349 /// Generates the default visit methods.
352 Generate default visit methods. 350 ///
353 E.g: 351 /// E.g:
354 private mixin .visitDefault!(ClassDeclaration) _ClassDeclaration; 352 /// ---
355 override returnType!("ClassDeclaration") visit(ClassDeclaration node) 353 /// private mixin .visitDefault!(ClassDeclaration) _ClassDeclaration;
356 { return _ClassDeclaration.visitDefault(node); } 354 /// override returnType!("ClassDeclaration") visit(ClassDeclaration node)
357 +/ 355 /// { return _ClassDeclaration.visitDefault(node); }
356 /// ---
358 char[] generateDefaultVisitMethods() 357 char[] generateDefaultVisitMethods()
359 { 358 {
360 char[] text; 359 char[] text;
361 foreach (className; classNames) 360 foreach (className; classNames)
362 text ~= "private mixin .visitDefault!("~className~") _"~className~";\n" 361 text ~= "private mixin .visitDefault!("~className~") _"~className~";\n"
363 "override returnType!(\""~className~"\") visit("~className~" node){return _"~className~".visitDefault(node);}\n"; 362 "override returnType!(\""~className~"\") visit("~className~" node){return _"~className~".visitDefault(node);}\n";
364 return text; 363 return text;
365 } 364 }
366 // pragma(msg, generateDefaultVisitMethods()); 365 // pragma(msg, generateDefaultVisitMethods());
367 366
368 /++ 367 /// This class provides default methods for traversing nodes in a syntax tree.
369 This class provides default methods for traversing nodes in a syntax tree.
370 +/
371 class DefaultVisitor : Visitor 368 class DefaultVisitor : Visitor
372 { 369 {
373 // Comment out if too many errors are shown. 370 // Comment out if too many errors are shown.
374 mixin(generateDefaultVisitMethods()); 371 mixin(generateDefaultVisitMethods());
375 } 372 }