diff options
Diffstat (limited to 'st/SymTableFirst.java')
| -rw-r--r-- | st/SymTableFirst.java | 238 |
1 files changed, 0 insertions, 238 deletions
diff --git a/st/SymTableFirst.java b/st/SymTableFirst.java deleted file mode 100644 index 13380fd..0000000 --- a/st/SymTableFirst.java +++ /dev/null @@ -1,238 +0,0 @@ -package st; - -import syntaxtree.*; -import visitor.*; -import java.util.*; -import misc.*; - -/** - * Performs a preliminary visit through the AST, - * initializing all Instances and placing them in the table. - */ -public class SymTableFirst<R> extends GJDepthFirst<R,SymbolTable> { - - /** - * f0 -> "class" - * f1 -> Identifier() - * f2 -> "{" - * f3 -> "public" - * f4 -> "static" - * f5 -> "void" - * f6 -> "main" - * f7 -> "(" - * f8 -> "String" - * f9 -> "[" - * f10 -> "]" - * f11 -> Identifier() - * f12 -> ")" - * f13 -> "{" - * f14 -> ( VarDeclaration() )* - * f15 -> ( Statement() )* - * f16 -> "}" - * f17 -> "}" - */ - public R visit(MainClass n, SymbolTable symt) { - n.f0.accept(this, symt); - n.f1.accept(this, symt); - n.f2.accept(this, symt); - n.f3.accept(this, symt); - n.f4.accept(this, symt); - n.f5.accept(this, symt); - n.f6.accept(this, symt); - n.f7.accept(this, symt); - n.f8.accept(this, symt); - n.f9.accept(this, symt); - n.f10.accept(this, symt); - n.f11.accept(this, symt); - n.f12.accept(this, symt); - n.f13.accept(this, symt); - n.f14.accept(this, symt); - n.f15.accept(this, symt); - n.f16.accept(this, symt); - n.f17.accept(this, symt); - - - String id = n.f1.f0.tokenImage; - ClassInstance instance = new ClassInstance(id); - PrintFilter.print("Inserting " + id + " => " + instance.getType(), true); - symt.put(id, instance); - - id = "main"; - MethodInstance main = new MethodInstance(id, TypeEnum.ERROR); - PrintFilter.print("Inserting " + id + " => " + main.getType(), true); - symt.put(id, main); - - - return null; - } - - /** - * f0 -> "class" - * f1 -> Identifier() - * f2 -> "{" - * f3 -> ( VarDeclaration() )* - * f4 -> ( MethodDeclaration() )* - * f5 -> "}" - */ - public R visit(ClassDeclaration n, SymbolTable symt) { - n.f0.accept(this, symt); - n.f1.accept(this, symt); - n.f2.accept(this, symt); - n.f3.accept(this, symt); - n.f4.accept(this, symt); - n.f5.accept(this, symt); - - - String id = n.f1.f0.tokenImage; - ClassInstance instance = new ClassInstance(id); - PrintFilter.print("Inserting " + id + " => " + instance.getType(), true); - symt.put(id, instance); - - - return null; - } - - /** - * f0 -> "class" - * f1 -> Identifier() - * f2 -> "extends" - * f3 -> Identifier() - * f4 -> "{" - * f5 -> ( VarDeclaration() )* - * f6 -> ( MethodDeclaration() )* - * f7 -> "}" - */ - public R visit(ClassExtendsDeclaration n, SymbolTable symt) { - n.f0.accept(this, symt); - n.f1.accept(this, symt); - n.f2.accept(this, symt); - n.f3.accept(this, symt); - n.f4.accept(this, symt); - n.f5.accept(this, symt); - n.f6.accept(this, symt); - n.f7.accept(this, symt); - - - String id = n.f1.f0.tokenImage; - ClassInstance instance = new ClassInstance(id); - PrintFilter.print("Inserting " + id + " => " + instance.getType(), true); - symt.put(id, instance); - - - return null; - } - - /** - * f0 -> Type() - * f1 -> Identifier() - * f2 -> ";" - */ - public R visit(VarDeclaration n, SymbolTable symt) { - n.f0.accept(this, symt); - n.f1.accept(this, symt); - n.f2.accept(this, symt); - - String id = n.f1.f0.tokenImage; - TypeEnum rtrn = TypeEnum.ERROR; - switch (n.f0.f0.which) { - case 0: - rtrn = TypeEnum.intarray; break; - case 1: - rtrn = TypeEnum.bool; break; - case 2: - rtrn = TypeEnum.integer; break; - default: - PrintFilter.print("Unsupported case", true); - } - - TypeInstance instance = new TypeInstance(id, rtrn); - PrintFilter.print("Inserting " + id + "=> " + instance.getType(), true); - symt.put(id, instance); - - - return null; - } - - /** - * f0 -> "public" - * f1 -> Type() - * f2 -> Identifier() - * f3 -> "(" - * f4 -> ( FormalParameterList() )? - * f5 -> ")" - * f6 -> "{" - * f7 -> ( VarDeclaration() )* - * f8 -> ( Statement() )* - * f9 -> "return" - * f10 -> Expression() - * f11 -> ";" - * f12 -> "}" - */ - public R visit(MethodDeclaration n, SymbolTable symt) { - n.f0.accept(this, symt); - n.f1.accept(this, symt); - n.f2.accept(this, symt); - n.f3.accept(this, symt); - n.f4.accept(this, symt); - n.f5.accept(this, symt); - n.f6.accept(this, symt); - n.f7.accept(this, symt); - n.f8.accept(this, symt); - n.f9.accept(this, symt); - n.f10.accept(this, symt); - n.f11.accept(this, symt); - n.f12.accept(this, symt); - - - String id = n.f2.f0.tokenImage; - TypeEnum rtrn = TypeEnum.ERROR; - switch (n.f1.f0.which) { - case 0: - rtrn = TypeEnum.intarray; break; - case 1: - rtrn = TypeEnum.bool; break; - case 2: - rtrn = TypeEnum.integer; break; - default: - PrintFilter.print("Unsupported case", true); - } - - MethodInstance instance = new MethodInstance(id, rtrn); - PrintFilter.print("Inserting " + id + " => " + instance.getType(), true); - symt.put(id, instance); - - - return null; - } - - /** - * f0 -> Type() - * f1 -> Identifier() - */ - public R visit(FormalParameter n, SymbolTable symt) { - n.f0.accept(this, symt); - n.f1.accept(this, symt); - - - String id = n.f1.f0.tokenImage; - TypeEnum rtrn = TypeEnum.ERROR; - switch (n.f0.f0.which) { - case 0: - rtrn = TypeEnum.intarray; break; - case 1: - rtrn = TypeEnum.bool; break; - case 2: - rtrn = TypeEnum.integer; break; - default: - PrintFilter.print("Unsupported case", true); - } - - TypeInstance instance = new TypeInstance(id, rtrn); - PrintFilter.print("Inserting " + id + " => " + instance.getType(), true); - symt.put(id, instance); - - - return null; - } - -} |