Kevin/Tiger
Archived
1
1
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

First public commit!

Browse Source
This commit is contained in:
Juan Carlos Pujol Mainegra
2017-08-18 03:07:43 -05:00
parent 2c754790e6
commit 5a8ddf6978
91 changed files with 17165 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

144
YATC/ASTNodes/LocalNode/ExpressionNode/ArrayInstNode.cs Normal file
View File

@@ -0,0 +1,144 @@
/*
* 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;
using System.Linq.Expressions;
using System.Reflection.Emit;
using YATC.Scope;
namespace YATC.ASTNodes
{
class ArrayInstNode : ExpressionNode
{
private ArrayType _arrayType;
public ArrayInstNode(IToken payload)
: base(payload)
{
}
public IdNode IdNode { get { return (IdNode)TigerChildren[0]; } }
public ExpressionNode IndexExpressionNode { get { return (ExpressionNode)TigerChildren[1]; } }
public ExpressionNode OfExpressionNode { get { return (ExpressionNode)TigerChildren[2]; } }
public override void CheckSemantics(TigerScope scope, Report report)
{
TigerTypeInfo arrayInfo = scope.FindTypeInfo(this.IdNode.Name, false);
if (arrayInfo == null || arrayInfo.Holder == null || arrayInfo.Holder.TigerType == null)
{
report.AddError(this.Line, this.Column, "Undeclared array type: '{0}'.", this.IdNode.Name);
this.TigerType = TigerType.Error;
return;
}
if (arrayInfo.Holder.TigerType.Basetype != BaseType.Array)
{
report.AddError(this.Line, this.Column, "Given type is not an array: {0}", this.IdNode.Name);
this.TigerType = TigerType.Error;
return;
}
_arrayType = arrayInfo.Holder.TigerType as ArrayType;
if (_arrayType == null)
throw new NullReferenceException();
this.IndexExpressionNode.CheckSemantics(scope, report);
if (!this.IndexExpressionNode.IsOk)
{
this.TigerType = TigerType.Error;
return;
}
if (this.IndexExpressionNode.TigerType.Basetype != BaseType.Int)
{
report.AddError(this.Line, this.Column, "Type mismatch: Given index expression is not an integer: {0}", this.IndexExpressionNode.TigerType.Name);
this.TigerType = TigerType.Error;
return;
}
this.OfExpressionNode.CheckSemantics(scope, report);
if (!this.OfExpressionNode.IsOk)
{
this.TigerType = TigerType.Error;
return;
}
if (!this.OfExpressionNode.TigerType.IsAssignableTo(_arrayType.ElementTypeHolder.TigerType))
{
report.AddError(this.Line, this.Column, "Type mismatch: Array element and expression types: '{0}' and '{1}'",
_arrayType.ElementTypeHolder.TigerType.Name, this.OfExpressionNode.TigerType.Name);
this.TigerType = TigerType.Error;
return;
}
this.TigerType = _arrayType;
}
internal override void GenerateCode(ModuleBuilder moduleBuilder)
{
this.IndexExpressionNode.GenerateCode(moduleBuilder);
this.OfExpressionNode.GenerateCode(moduleBuilder);
Type elementType = _arrayType.ElementTypeHolder.TigerType.GetCLRType();
Type arrayType = elementType.MakeArrayType();
ParameterExpression arrayParamExpr = Expression.Parameter(arrayType);
ParameterExpression counterExpr = Expression.Parameter(typeof(int));
var arrayInitExpr = Expression.NewArrayBounds(elementType, this.IndexExpressionNode.VmExpression);
LabelTarget breakLabel = Expression.Label();
BlockExpression blockInitExpression = Expression.Block(
new ParameterExpression[] { arrayParamExpr, counterExpr },
new Expression[]
{
Expression.Assign(arrayParamExpr, arrayInitExpr),
Expression.Assign(counterExpr, Expression.Constant(0)),
Expression.Loop(
Expression.Block(
Expression.IfThenElse(
Expression.LessThan(
counterExpr,
this.IndexExpressionNode.VmExpression),
Expression.Assign(
Expression.ArrayAccess(arrayParamExpr, counterExpr),
Expression.Convert(
this.OfExpressionNode.VmExpression,
elementType
)
),
Expression.Break(breakLabel)
),
Expression.Assign(counterExpr, Expression.Increment(counterExpr))
), breakLabel),
arrayParamExpr
}
);
this.VmExpression = blockInitExpression;
}
}
}