First public commit!

2017-08-18 03:07:43 -05:00
parent 2c754790e6
commit 5a8ddf6978
91 changed files with 17165 additions and 1 deletions
--- a/YATC/ASTNodes/LocalNode/ExpressionNode/AtomicNode/AccessNode/FieldAccessNode.cs
+++ b/YATC/ASTNodes/LocalNode/ExpressionNode/AtomicNode/AccessNode/FieldAccessNode.cs
@@ -0,0 +1,107 @@
+/*
+ *  Yet Another Tiger Compiler (YATC)
+ *
+ *  Copyright 2014 Damian Valdés Santiago, Juan Carlos Pujol Mainegra
+ *  
+ *  Permission is hereby granted, free of charge, to any person obtaining a copy
+ *  of this software and associated documentation files (the "Software"), to deal
+ *  in the Software without restriction, including without limitation the rights
+ *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ *  copies of the Software, and to permit persons to whom the Software is
+ *  furnished to do so, subject to the following conditions:
+ *  
+ *  The above copyright notice and this permission notice shall be included in all
+ *  copies or substantial portions of the Software.
+ *  
+ *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ *  SOFTWARE.  
+ *
+ */
+
+using Antlr.Runtime;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection.Emit;
+using YATC.Scope;
+
+namespace YATC.ASTNodes
+{
+    class FieldAccessNode : AccessNode
+    {
+        private TigerType _parentType;
+
+        public FieldAccessNode(IToken payload)
+            : base(payload)
+        {
+        }
+
+        public TypeNode IdNode { get { return (TypeNode)TigerChildren[0]; } }
+        public AccessNode AccessNode { get { return TigerChildren.Length > 1 ? (AccessNode)TigerChildren[1] : null; } }
+
+        public override void CheckSemantics(TigerScope scope, Report report)
+        {
+            if (this.ParentType.Basetype != BaseType.Record)
+            {
+                report.AddError(this.Line, this.Column,
+                    "Type mismatch: Variable or field is not a record: '{0}' was found.",
+                    this.ParentType.Name);
+                this.TigerType = TigerType.Error;
+                return;
+            }
+
+            VariableInfo[] fieldInfos = ((RecordType)this.ParentType).FieldInfos;
+            if (fieldInfos.Length == 0)
+            {
+                report.AddError(this.Line, this.Column,
+                    "Cannot access field on empty record type '{0}': '{1}'",
+                    this.ParentType.Name, this.IdNode.Name);
+                this.TigerType = TigerType.Error;
+                return;
+            }
+
+            var fieldInfo = fieldInfos.FirstOrDefault(x => x.Name == this.IdNode.Name);
+
+            if (fieldInfo == null)
+            {
+                report.AddError(this.Line, this.Column, 
+                    "Record type '{0}' does not contain a definition for '{1}'.",
+                    this.ParentType.Name, this.IdNode.Name);
+                this.TigerType = TigerType.Error;
+                return;
+            }
+
+            _parentType = fieldInfo.Holder.TigerType;
+
+            if (this.AccessNode == null)
+            {
+                this.TigerType = _parentType;
+            }
+            else
+            {
+                this.AccessNode.ParentType = _parentType;
+                this.AccessNode.CheckSemantics(scope, report);
+                this.TigerType = AccessNode.TigerType;
+            }
+        }
+
+        internal override void GenerateCode(ModuleBuilder moduleBuilder)
+        {
+            this.VmExpression = Expression.MakeMemberAccess(
+                this.VmExpression, 
+                this.ParentType.GetCLRType().GetMember(this.IdNode.Name)[0]
+            );
+
+            if (this.AccessNode == null)
+                return;
+
+            this.AccessNode.VmExpression = this.VmExpression;
+            this.AccessNode.GenerateCode(moduleBuilder);
+            this.VmExpression = this.AccessNode.VmExpression;
+        }
+    }
+}