From e3087bb26c0e6ebf211907ae156e6e9f0b3c1eee Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop+git@gmail.com>
Date: Thu, 7 Oct 2010 16:37:02 +0000
Subject: [PATCH 2/2] making parser flat

git-svn-id: svn://anubis/fart/branches/flat-parser@354 7f9b0f55-74a9-4bce-be96-3c2cd072584d
---
 parser/parser.yy | 373 +++++++++--------------------------------------
 1 file changed, 69 insertions(+), 304 deletions(-)

diff --git a/parser/parser.yy b/parser/parser.yy
index 83fbd36..a1f8eec 100644
--- a/parser/parser.yy
+++ b/parser/parser.yy
@@ -124,115 +124,37 @@ refptr<Scope> parser_scope;
 
 %%
 
-scene: SCENE LCURLY scene_items RCURLY {
+scene: SCENE LCURLY general_items RCURLY {
             $$ = new SceneNode();
             $$->addChildren($3);
             parsed_scene_node = $$;
         }
      ;
 
-bool_items: /* empty */
-          | bool_item bool_items {
-                $$ = new ItemsNode();
-                $$->addChild($1);
-                $$->addChildren($2);
-            }
-          ;
-
-bool_item: shape
-         | shape_item
-         | shape_definition
-         | transform_block
-         ;
-
-box: BOX LCURLY box_items RCURLY {
+box: BOX LCURLY general_items RCURLY {
         $$ = new BoxNode();
         $$->addChildren($3);
     }
    ;
 
-box_items: /* empty */
-         | box_item box_items {
-                $$ = new ItemsNode();
-                $$->addChild($1);
-                $$->addChildren($2);
-            }
-         ;
-
-box_item: SIZE vector3 {
-                $$ = new SizeNode($2);
-            }
-        | shape_item { $$ = $1; }
-        ;
-
-camera: CAMERA LCURLY camera_items RCURLY {
+camera: CAMERA LCURLY general_items RCURLY {
             $$ = new CameraNode();
             $$->addChildren($3);
         }
       ;
 
-camera_items: /* empty */
-            | camera_item camera_items {
-                    $$ = new ItemsNode();
-                    $$->addChild($1);
-                    $$->addChildren($2);
-                }
-            ;
-
-camera_item: POSITION vector3 {
-                $$ = new PositionNode($2);
-            }
-           | LOOKAT vector3 {
-                $$ = new LookAtNode($2);
-            }
-           | UP vector3 {
-                $$ = new UpNode($2);
-            }
-           | VFOV expression {
-                $$ = new VFOVNode($2);
-            }
-           ;
-
-cyl: CYL LCURLY cyl_items RCURLY {
+cyl: CYL LCURLY general_items RCURLY {
         $$ = new CylNode();
         $$->addChildren($3);
     }
    ;
 
-cyl_items: /* empty */
-         | cyl_item cyl_items {
-                $$ = new ItemsNode();
-                $$->addChild($1);
-                $$->addChildren($2);
-            }
-         ;
-
-cyl_item: SIZE vector3 {
-                $$ = new SizeNode($2);
-            }
-        | shape_item { $$ = $1; }
-        ;
-
-extrude: EXTRUDE LCURLY extrude_items RCURLY {
+extrude: EXTRUDE LCURLY general_items RCURLY {
                 $$ = new ExtrudeNode();
                 $$->addChildren($3);
             }
        ;
 
-extrude_items: /* empty */
-             | extrude_item extrude_items {
-                    $$ = new ItemsNode();
-                    $$->addChild($1);
-                    $$->addChildren($2);
-                }
-             ;
-
-extrude_item: polygon { $$ = $1; }
-            | ngon { $$ = $1; }
-            | offset { $$ = $1; }
-            | shape_item { $$ = $1; }
-            ;
-
 general_items: /* empty */
              | general_item general_items {
                 $$ = new ItemsNode();
@@ -241,98 +163,74 @@ general_items: /* empty */
              }
              ;
 
-general_item: transform_block { $$ = $1; }
-            | material_definition { $$ = $1; }
-            | shape_definition { $$ = $1; }
-            | shape { $$ = $1; }
+general_item: AMBIENT vector3 { $$ = new AmbientNode($2); }
+            | AMBIENT_OCCLUSION expression {
+                $$ = new AmbientOcclusionNode($2);
+            }
+            | camera { $$ = $1; }
+            | COLOR vector3 { $$ = new ColorNode($2); }
+            | DIFFUSE vector3 { $$ = new DiffuseNode($2); }
+            | EXPOSURE expression { $$ = new ExposureNode($2); }
             | for { $$ = $1; }
+            | HEIGHT expression { $$ = new HeightNode($2); }
             | if { $$ = $1; }
+            | JITTER expression { $$ = new JitterNode($2); }
+            | light { $$ = $1; }
+            | LOOKAT vector3 { $$ = new LookAtNode($2); }
+            | material { $$ = $1; }
+            | material_definition { $$ = $1; }
+            | material_ref { $$ = $1; }
+            | MAXDEPTH expression { $$ = new MaxDepthNode($2); }
+            | MULTISAMPLE expression { $$ = new MultisampleNode($2); }
+            | ngon { $$ = $1; }
+            | offset { $$ = $1; }
+            | options { $$ = $1; }
+            | polygon { $$ = $1; }
+            | POSITION vector3 { $$ = new PositionNode($2); }
+            | POSITION vector3 COMMA expression {
+                $$ = new PlanePositionNode($2, $4);
+            }
+            | RADIUS expression { $$ = new RadiusNode($2); }
+            | REFLECTANCE expression { $$ = new ReflectanceNode($2); }
+            | ROTATE expression COMMA vector3 { $$ = new RotateNode($2, $4); }
+            | SCALE expression { $$ = new ScaleNode(new ScaleScalarNode($2)); }
+            | SCALE vector2 { $$ = new ScaleNode($2); }
+            | SCALE vector3 { $$ = new ScaleNode($2); }
+            | shape { $$ = $1; }
+            | shape_definition { $$ = $1; }
+            | SHININESS expression { $$ = new ShininessNode($2); }
+            | SIZE vector3 { $$ = new SizeNode($2); }
+            | SPECULAR vector3 { $$ = new SpecularNode($2); }
             | stmt_expression { $$ = $1; }
+            | transform_block { $$ = $1; }
+            | TRANSLATE vector3 { $$ = new TranslateNode($2); }
+            | TRANSPARENCY expression { $$ = new TransparencyNode($2); }
+            | UP vector3 { $$ = new UpNode($2); }
+            | vector2 { $$ = $1; }
+            | VFOV expression { $$ = new VFOVNode($2); }
+            | WIDTH expression { $$ = new WidthNode($2); }
             ;
 
-intersect: INTERSECT LCURLY bool_items RCURLY {
+
+intersect: INTERSECT LCURLY general_items RCURLY {
                 $$ = new IntersectNode();
                 $$->addChildren($3);
             }
          ;
 
-jitter: JITTER expression {
-        $$ = new JitterNode($2);
-      }
-      ;
-
-light: LIGHT LCURLY light_items RCURLY {
+light: LIGHT LCURLY general_items RCURLY {
             $$ = new LightNode();
             $$->addChildren($3);
         }
      ;
 
-light_items: /* empty */
-           | light_item light_items {
-                $$ = new ItemsNode();
-                $$->addChild($1);
-                $$->addChildren($2);
-            }
-           ;
-
-light_item: POSITION vector3 {
-                $$ = new PositionNode($2);
-            }
-          | DIFFUSE vector3 {
-                $$ = new DiffuseNode($2);
-            }
-          | SPECULAR vector3 {
-                $$ = new SpecularNode($2);
-            }
-          | COLOR vector3 {
-                $$ = new ColorNode($2);
-            }
-          | radius {
-                $$ = $1;
-            }
-          | jitter {
-                $$ = $1;
-            }
-          ;
-
-material: MATERIAL LCURLY material_items RCURLY {
+material: MATERIAL LCURLY general_items RCURLY {
                 $$ = new MaterialNode();
                 $$->addChildren($3);
             }
         ;
 
-material_items: /* empty */
-              | material_item material_items {
-                    $$ = new ItemsNode();
-                    $$->addChild($1);
-                    $$->addChildren($2);
-                }
-              ;
-
-material_item: COLOR vector3 {
-                    $$ = new ColorNode($2);
-                }
-             | AMBIENT vector3 {
-                    $$ = new AmbientNode($2);
-                }
-             | DIFFUSE vector3 {
-                    $$ = new DiffuseNode($2);
-                }
-             | SPECULAR vector3 {
-                    $$ = new SpecularNode($2);
-                }
-             | REFLECTANCE expression {
-                    $$ = new ReflectanceNode($2);
-                }
-             | SHININESS expression {
-                    $$ = new ShininessNode($2);
-                }
-             | TRANSPARENCY expression {
-                    $$ = new TransparencyNode($2);
-                }
-             ;
-
-material_definition: DEFINE MATERIAL IDENTIFIER LCURLY material_items RCURLY {
+material_definition: DEFINE MATERIAL IDENTIFIER LCURLY general_items RCURLY {
                         $$ = new MaterialDefinitionNode($3->getString());
                         $$->addChildren($5);
                     }
@@ -355,123 +253,29 @@ ngon: NGON expression COMMA expression {
 offset: OFFSET expression {
         $$ = new OffsetNode($2);
       }
-      | OFFSET expression LCURLY offset_items RCURLY {
+      | OFFSET expression LCURLY general_items RCURLY {
         $$ = new OffsetNode($2);
         $$->addChildren($4);
       }
       ;
 
-offset_items: /* empty */
-             | offset_item offset_items {
-                    $$ = new ItemsNode();
-                    $$->addChild($1);
-                    $$->addChildren($2);
-                }
-             ;
-
-offset_item: SCALE expression {
-                $$ = new ScaleNode(new ScaleScalarNode($2));
-           }
-           | SCALE vector2 {
-                $$ = new ScaleNode($2);
-           }
-           | POSITION vector2 {
-                $$ = new PositionNode($2);
-           }
-           ;
-
-options: OPTIONS LCURLY options_items RCURLY {
+options: OPTIONS LCURLY general_items RCURLY {
             $$ = new OptionsNode();
             $$->addChildren($3);
-        }
-       ;
-
-options_items: /* empty */
-             | options_item options_items {
-                    $$ = new ItemsNode();
-                    $$->addChild($1);
-                    $$->addChildren($2);
-                }
-             ;
-
-options_item: WIDTH expression {
-                    $$ = new WidthNode($2);
-                }
-            | HEIGHT expression {
-                    $$ = new HeightNode($2);
-                }
-            | MULTISAMPLE expression {
-                    $$ = new MultisampleNode($2);
-                }
-            | MAXDEPTH expression {
-                    $$ = new MaxDepthNode($2);
-                }
-            | EXPOSURE expression {
-                    $$ = new ExposureNode($2);
-                }
-            | AMBIENT vector3 {
-                    $$ = new AmbientNode($2);
-                }
-            | AMBIENT_OCCLUSION expression {
-                    $$ = new AmbientOcclusionNode($2);
-                }
-            ;
-
-plane: PLANE LCURLY plane_items RCURLY {
-            $$ = new PlaneNode();
-            $$->addChildren($3);
-        }
-     ;
-
-plane_items: /* empty */
-           | plane_item plane_items {
-                $$ = new ItemsNode();
-                $$->addChild($1);
-                $$->addChildren($2);
-            }
-           ;
-
-plane_item: POSITION vector3 COMMA expression {
-                $$ = new PlanePositionNode($2, $4);
-            }
-          | shape_item { $$ = $1; }
-          ;
-
-polygon: POLYGON LCURLY polygon_items RCURLY {
-            $$ = new PolygonNode();
-            $$->addChildren($3);
        }
        ;
 
-polygon_items: /* empty */
-             | polygon_item polygon_items {
-                $$ = new ItemsNode();
-                $$->addChild($1);
-                $$->addChildren($2);
-             }
-             ;
+plane: PLANE LCURLY general_items RCURLY {
+        $$ = new PlaneNode();
+        $$->addChildren($3);
+     }
+     ;
 
-polygon_item: vector2 { $$ = $1; }
-            ;
-
-radius: RADIUS expression {
-            $$ = new RadiusNode($2);
-        }
-      ;
-
-scene_items: /* empty */
-           | scene_item scene_items {
-                $$ = new ItemsNode();
-                $$->addChild($1);
-                $$->addChildren($2);
-            }
-           ;
-
-scene_item: camera { $$ = $1; }
-          | light { $$ = $1; }
-          | options { $$ = $1; }
-          | general_item { $$ = $1; }
-          ;
+polygon: POLYGON LCURLY general_items RCURLY {
+            $$ = new PolygonNode();
+            $$->addChildren($3);
+       }
+       ;
 
 shape: plane { $$ = $1; }
      | sphere { $$ = $1; }
@@ -497,60 +301,21 @@ shape_ref: SHAPE IDENTIFIER shape_ref_more {
          ;
 
 shape_ref_more: /* empty */
-              | LCURLY shape_ref_items RCURLY { $$ = $2; }
+              | LCURLY general_items RCURLY { $$ = $2; }
               ;
 
-shape_ref_items: /* empty */
-               | shape_item shape_ref_items {
-                    $$ = new ItemsNode();
-                    $$->addChild($1);
-                    $$->addChildren($2);
-               }
-               ;
-
-shape_item: material { $$ = $1; }
-          | material_ref { $$ = $1; }
-          | transform { $$ = $1; }
-          ;
-
-sphere: SPHERE LCURLY sphere_items RCURLY {
+sphere: SPHERE LCURLY general_items RCURLY {
             $$ = new SphereNode();
             $$->addChildren($3);
         }
       ;
 
-sphere_items: /* empty */
-            | sphere_item sphere_items {
-                    $$ = new ItemsNode();
-                    $$->addChild($1);
-                    $$->addChildren($2);
-                }
-            ;
-
-sphere_item: radius { $$ = $1; }
-           | shape_item { $$ = $1; }
-           ;
-
-subtract: SUBTRACT LCURLY bool_items RCURLY {
+subtract: SUBTRACT LCURLY general_items RCURLY {
                 $$ = new SubtractNode();
                 $$->addChildren($3);
             }
         ;
 
-transform: TRANSLATE vector3 {
-                $$ = new TranslateNode($2);
-            }
-         | ROTATE expression COMMA vector3 {
-                $$ = new RotateNode($2, $4);
-            }
-         | SCALE vector3 {
-                $$ = new ScaleNode($2);
-            }
-         | SCALE expression {
-                $$ = new ScaleNode(new ScaleScalarNode($2));
-            }
-         ;
-
 transform_block: TRANSLATE vector3 LCURLY general_items RCURLY {
                     $$ = new TranslateBlockNode($2);
                     $$->addChildren($4);
@@ -569,7 +334,7 @@ transform_block: TRANSLATE vector3 LCURLY general_items RCURLY {
                 }
                ;
 
-union: UNION LCURLY bool_items RCURLY {
+union: UNION LCURLY general_items RCURLY {
             $$ = new UnionNode();
             $$->addChildren($3);
         }