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package org.momut.ooas.visitors;
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import java.util.ArrayList;
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31
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import java.util.Iterator;
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32
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import java.util.LinkedList;
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33
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import java.util.Stack;
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34
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35
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import org.momut.ooas.ast.AstNodeTypeEnum;
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36
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import org.momut.ooas.ast.IAst;
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37
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import org.momut.ooas.ast.expressions.AccessExpression;
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import org.momut.ooas.ast.expressions.BinaryOperator;
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39
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import org.momut.ooas.ast.expressions.CallExpression;
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import org.momut.ooas.ast.expressions.ExistsQuantifier;
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41
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import org.momut.ooas.ast.expressions.Expression;
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42
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import org.momut.ooas.ast.expressions.ExpressionKind;
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43
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import org.momut.ooas.ast.expressions.ForallQuantifier;
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44
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import org.momut.ooas.ast.expressions.IdentifierExpression;
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45
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import org.momut.ooas.ast.expressions.LeafExpression;
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import org.momut.ooas.ast.expressions.ListConstructor;
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import org.momut.ooas.ast.expressions.MapConstructor;
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import org.momut.ooas.ast.expressions.SetConstructor;
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49
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import org.momut.ooas.ast.expressions.TernaryOperator;
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import org.momut.ooas.ast.expressions.TupleConstructor;
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51
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import org.momut.ooas.ast.expressions.TupleMapAccessExpression;
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52
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import org.momut.ooas.ast.expressions.TypeExpression;
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53
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import org.momut.ooas.ast.expressions.UnaryOperator;
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import org.momut.ooas.ast.expressions.UnresolvedIdentifierExpression;
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55
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import org.momut.ooas.ast.expressions.ValueExpression;
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import org.momut.ooas.ast.expressions.LeafExpression.LeafTypeEnum;
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import org.momut.ooas.ast.expressions.MapConstructor.MapItem;
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58
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import org.momut.ooas.ast.identifiers.AttributeIdentifier;
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59
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import org.momut.ooas.ast.identifiers.ConstantIdentifier;
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60
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import org.momut.ooas.ast.identifiers.ExpressionVariableIdentifier;
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61
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import org.momut.ooas.ast.identifiers.FunctionIdentifier;
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62
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import org.momut.ooas.ast.identifiers.Identifier;
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63
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import org.momut.ooas.ast.identifiers.IdentifierKind;
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import org.momut.ooas.ast.identifiers.ParameterIdentifier;
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65
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import org.momut.ooas.ast.identifiers.SelfTypeIdentifier;
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import org.momut.ooas.ast.statements.Assignment;
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import org.momut.ooas.ast.statements.Call;
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68
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import org.momut.ooas.ast.statements.GuardedCommand;
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69
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import org.momut.ooas.ast.statements.SeqBlock;
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import org.momut.ooas.ast.statements.Statement;
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import org.momut.ooas.ast.types.AnyType;
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72
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import org.momut.ooas.ast.types.BoolType;
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73
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import org.momut.ooas.ast.types.CharType;
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74
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import org.momut.ooas.ast.types.EnumType;
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75
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import org.momut.ooas.ast.types.FloatType;
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76
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import org.momut.ooas.ast.types.FunctionType;
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77
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import org.momut.ooas.ast.types.IntType;
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78
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import org.momut.ooas.ast.types.ListType;
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79
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import org.momut.ooas.ast.types.MapType;
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80
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import org.momut.ooas.ast.types.NullType;
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81
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import org.momut.ooas.ast.types.OoActionSystemType;
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82
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import org.momut.ooas.ast.types.TupleType;
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83
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import org.momut.ooas.ast.types.TypeKind;
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84
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import org.momut.ooas.ast.types.Type;
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85
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import org.momut.ooas.ast.types.ValuedEnumType;
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86
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import org.momut.ooas.parser.ParserError;
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87
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import org.momut.ooas.parser.ParserMessage;
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88
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import org.momut.ooas.parser.ParserState;
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89
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import org.momut.ooas.parser.ParserWarning;
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90
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import org.momut.ooas.parser.SymbolTable;
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91
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import org.momut.ooas.utils.exceptions.ArgumentException;
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92
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import org.momut.ooas.utils.exceptions.NotImplementedException;
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94
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97
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100
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103
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104
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public final class OoaResolveExpressionsVisitor extends OoaCompleteAstTraversalVisitor
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105
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{
|
106
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|
107
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private final Stack<SymbolTable> m_freeVariables = new Stack<SymbolTable>();
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108
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private Expression m_entryExpression = null;
|
109
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|
110
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|
111
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private void ReplaceExpression(IAst parent, Expression subElement, Expression newExpression)
|
112
|
{
|
113
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switch (parent.nodeType())
|
114
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{
|
115
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case identifier:
|
116
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ReplaceExpressionInIdentifier((Identifier)parent, subElement, newExpression);
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117
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break;
|
118
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case statement:
|
119
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ReplaceExpressionInStatement((Statement)parent, subElement, newExpression);
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120
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break;
|
121
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default:
|
122
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throw new NotImplementedException();
|
123
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}
|
124
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}
|
125
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private void ReplaceExpressionInIdentifier(Identifier identifier, Expression subElement, Expression newExpression)
|
126
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{
|
127
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switch (identifier.kind())
|
128
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{
|
129
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case AttributeIdentifier:
|
130
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final AttributeIdentifier ident = (AttributeIdentifier)identifier;
|
131
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assert(ident.initializer() == subElement);
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132
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ident.SetInitializer(newExpression);
|
133
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break;
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134
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case Constant:
|
135
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final ConstantIdentifier aconst = (ConstantIdentifier)identifier;
|
136
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assert(aconst.Value() == subElement);
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137
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aconst.SetValue(newExpression);
|
138
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if (newExpression.kind() != ExpressionKind.Value)
|
139
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Error(aconst.Value(), String.format("%s not a constant!", aconst.tokenText()));
|
140
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break;
|
141
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default:
|
142
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throw new NotImplementedException();
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143
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}
|
144
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}
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145
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private void ReplaceExpressionInStatement(Statement statement, Expression subElement, Expression newExpression)
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146
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{
|
147
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switch (statement.kind())
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148
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{
|
149
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case GuardedCommand:
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150
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final GuardedCommand gc = (GuardedCommand)statement;
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151
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assert(gc.guard() == subElement);
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152
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gc.SetGuard(newExpression);
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153
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break;
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154
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case SeqBlock:
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155
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final SeqBlock sqblock = (SeqBlock)statement;
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156
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assert(sqblock.filter() == subElement);
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157
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sqblock.SetFilter(null);
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158
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159
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final SeqBlock implseq = new SeqBlock(sqblock.line(), sqblock.pos());
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160
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implseq.SetStatements(sqblock.statements());
|
161
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final GuardedCommand implguard = new GuardedCommand(newExpression, implseq, sqblock.line(), sqblock.pos());
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162
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sqblock.SetStatements(new LinkedList<Statement>());
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163
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sqblock.AddStatement(implguard);
|
164
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break;
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165
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case Assignment:
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166
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final Assignment zw = (Assignment)statement;
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167
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boolean found = false;
|
168
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if (zw.nondetExpression() == subElement)
|
169
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{
|
170
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zw.SetNondetExpression(newExpression);
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171
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found = true;
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172
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}
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173
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else
|
174
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{
|
175
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int cntr = 0;
|
176
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while (cntr < zw.places().size()) {
|
177
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if (zw.places().get(cntr) == subElement) {
|
178
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zw.places().set(cntr, newExpression);
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179
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found = true;
|
180
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break;
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181
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}
|
182
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cntr ++;
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183
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}
|
184
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if (!found) {
|
185
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cntr = 0;
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186
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while (cntr < zw.values().size()) {
|
187
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if (zw.values().get(cntr) == subElement) {
|
188
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zw.values().set(cntr, newExpression);
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189
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found = true;
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190
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break;
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191
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}
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192
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cntr ++;
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193
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}
|
194
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}
|
195
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}
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196
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assert(found);
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197
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break;
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198
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case MethodCall:
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199
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final Call call = (Call)statement;
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200
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assert(call.callExpression() == subElement);
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201
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call.SetCallExpression(newExpression);
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202
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break;
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203
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default:
|
204
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throw new NotImplementedException();
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205
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}
|
206
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}
|
207
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|
208
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209
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private Expression Error(Expression expression, String p)
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210
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{
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211
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final ParserError error = new ParserError(m_ParserState.filename,
|
212
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expression.line(), expression.pos(), p);
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213
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m_ParserState.AddErrorMessage(error);
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214
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return null;
|
215
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}
|
216
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private void Info(Expression expression, String p)
|
217
|
{
|
218
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final ParserMessage msg = new ParserMessage(m_ParserState.filename,
|
219
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expression.line(), expression.pos(), p);
|
220
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m_ParserState.AddMessage(msg);
|
221
|
}
|
222
|
|
223
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private void Warning(Identifier expression, String p)
|
224
|
{
|
225
|
final ParserWarning warning = new ParserWarning(m_ParserState.filename,
|
226
|
expression.line(), expression.column(), p);
|
227
|
m_ParserState.AddWarningMessage(warning);
|
228
|
}
|
229
|
private void Warning(Expression expression, String p)
|
230
|
{
|
231
|
final ParserWarning warning = new ParserWarning(m_ParserState.filename,
|
232
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expression.line(), expression.pos(), p);
|
233
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m_ParserState.AddWarningMessage(warning);
|
234
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}
|
235
|
|
236
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private final ArrayList<TupleConstructor> m_matcherList = new ArrayList<TupleConstructor>();
|
237
|
|
238
|
|
239
|
|
240
|
|
241
|
|
242
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private Expression ResolveExpression(TernaryOperator expression)
|
243
|
{
|
244
|
if (expression.kind() == ExpressionKind.conditional)
|
245
|
{
|
246
|
final Expression left = ResolveExpression(expression.left());
|
247
|
Expression mid = ResolveExpression(expression.mid());
|
248
|
Expression right = ResolveExpression(expression.right());
|
249
|
|
250
|
if (left == null || mid == null || right == null)
|
251
|
return null;
|
252
|
|
253
|
if (left.type() == null || left.type().kind() != TypeKind.BoolType)
|
254
|
return Error(expression, "Conditional: Condition not a bool");
|
255
|
|
256
|
if (mid.type() == null || right.type() == null)
|
257
|
return Error(expression, "Conditional: Then or Else branch has void-type");
|
258
|
|
259
|
final Type acover = Type.CoverType(mid.type(), right.type());
|
260
|
|
261
|
if (acover == null)
|
262
|
return Error(expression, String.format(
|
263
|
"Conditional: Then and Else branch must be of same type. (%s <> %s)",
|
264
|
mid.type().toString(), right.type().toString()));
|
265
|
|
266
|
if (!Type.TypeEqual(acover, mid.type()))
|
267
|
{
|
268
|
mid = new UnaryOperator(ExpressionKind.Cast, mid, mid.line(), mid.pos());
|
269
|
mid.SetType(acover);
|
270
|
}
|
271
|
if (!Type.TypeEqual(acover, right.type()))
|
272
|
{
|
273
|
right = new UnaryOperator(ExpressionKind.Cast, right, right.line(), right.pos());
|
274
|
right.SetType(acover);
|
275
|
}
|
276
|
|
277
|
|
278
|
expression.SetLeftChild(left);
|
279
|
expression.SetMidChild(mid);
|
280
|
expression.SetRightChild(right);
|
281
|
expression.SetType(mid.type());
|
282
|
return expression;
|
283
|
}
|
284
|
else if (expression.kind() == ExpressionKind.foldLR || expression.kind() == ExpressionKind.foldRL)
|
285
|
{
|
286
|
CallExpression leftcall = expression.left().kind() != ExpressionKind.Call
|
287
|
? new CallExpression(expression.left(), new ArrayList<Expression>(), expression.line(),
|
288
|
expression.pos(), expression.definingScope())
|
289
|
: (CallExpression)expression.left();
|
290
|
|
291
|
leftcall = (CallExpression)ResolveExpression(leftcall, true);
|
292
|
if (leftcall == null)
|
293
|
return null;
|
294
|
|
295
|
final Expression afun = ResolveExpression(leftcall.child());
|
296
|
leftcall.SetChild(afun);
|
297
|
if (afun == null || afun.type() == null || afun.type().kind() != TypeKind.FunctionType)
|
298
|
return Error(expression, "Fold/Map operation needs a method or named action as LHS");
|
299
|
|
300
|
final FunctionType funType = (FunctionType)afun.type();
|
301
|
if (funType.returnType() == null && expression.mid() != null)
|
302
|
return Error(expression, "Fold operation needs a method with matching return type");
|
303
|
if (funType.returnType() != null && expression.mid() == null)
|
304
|
Warning(expression, "Map operation will discard result of function");
|
305
|
|
306
|
final boolean isMap = expression.mid() == null;
|
307
|
Expression mid = expression.mid();
|
308
|
if (!isMap)
|
309
|
{
|
310
|
mid = ResolveExpression(mid);
|
311
|
if ((funType.parameter().size() - leftcall.arguments().size()) != 2)
|
312
|
return Error(expression, "Function used in fold operation needs 2 not-instantiated parameters");
|
313
|
} else if ((funType.parameter().size() - leftcall.arguments().size()) != 1)
|
314
|
return Error(expression, "Function used in map operation needs one not-instantiated parameter");
|
315
|
|
316
|
final Expression right = ResolveExpression(expression.right());
|
317
|
if (right == null || right.type() == null || right.type().kind() != TypeKind.ListType)
|
318
|
return Error(expression, "Fold/Map operation needs list as RHS");
|
319
|
|
320
|
if (!isMap)
|
321
|
{
|
322
|
final int nextToLast = funType.parameter().size() - 2;
|
323
|
final Type initCover = Type.CoverType(funType.parameter().get(nextToLast), mid.type());
|
324
|
if (initCover == null)
|
325
|
return Error(expression, "Next to last parameter does not match initializer type in map operation.");
|
326
|
if (!Type.TypeEqual(mid.type(), initCover))
|
327
|
mid = new UnaryOperator(ExpressionKind.Cast, mid, mid.line(), mid.pos());
|
328
|
mid.SetType(initCover);
|
329
|
|
330
|
|
331
|
leftcall.arguments().add(new IdentifierExpression(new ParameterIdentifier("_result", initCover, null), 0, 0));
|
332
|
leftcall.arguments().add(new IdentifierExpression(new ParameterIdentifier("_elem", funType.parameter().peekLast(), null), 0, 0));
|
333
|
|
334
|
}
|
335
|
|
336
|
|
337
|
if (!Type.TypeEqual(funType.parameter().peekLast(), ((ListType)right.type()).innerType()))
|
338
|
return Error(expression, "Last paramter does not match inner-type of list in fold/map operation");
|
339
|
|
340
|
expression.SetLeftChild(leftcall);
|
341
|
expression.SetMidChild(mid);
|
342
|
expression.SetRightChild(right);
|
343
|
if (!isMap)
|
344
|
expression.SetType(funType.returnType());
|
345
|
else
|
346
|
expression.SetType(new NullType());
|
347
|
return expression;
|
348
|
} else
|
349
|
throw new ArgumentException();
|
350
|
}
|
351
|
private Expression ResolveExpression(ForallQuantifier expression)
|
352
|
{
|
353
|
final Expression child = ResolveExpression(expression.child());
|
354
|
if (child == null)
|
355
|
return null;
|
356
|
|
357
|
expression.SetType(new BoolType(null));
|
358
|
expression.SetChild(child);
|
359
|
return expression;
|
360
|
}
|
361
|
private Expression ResolveExpression(ExistsQuantifier expression)
|
362
|
{
|
363
|
final Expression child = ResolveExpression(expression.child());
|
364
|
if (child == null)
|
365
|
return null;
|
366
|
|
367
|
expression.SetType(new BoolType(null));
|
368
|
expression.SetChild(child);
|
369
|
return expression;
|
370
|
}
|
371
|
private Expression ResolveExpression(ListConstructor expression)
|
372
|
{
|
373
|
Type type = null;
|
374
|
ListType restype = null;
|
375
|
Expression comprehension = null;
|
376
|
if (expression.comprehension() != null)
|
377
|
{
|
378
|
comprehension = ResolveExpressionNewScope(expression.comprehension());
|
379
|
|
380
|
if (comprehension == null)
|
381
|
return null;
|
382
|
|
383
|
if (comprehension.type() == null)
|
384
|
return Error(expression, "List comprehension has void expression");
|
385
|
|
386
|
if (comprehension.type().kind() != TypeKind.BoolType)
|
387
|
return Error(expression, "List comprehension has to be bool-expression");
|
388
|
|
389
|
expression.SetComprehension(comprehension);
|
390
|
|
391
|
if (expression.elements().size() != 1)
|
392
|
return Error(expression, "List comprehension expects one initializer expression");
|
393
|
}
|
394
|
|
395
|
final ArrayList<Expression> newitems = new ArrayList<Expression>();
|
396
|
|
397
|
if (expression.elements().size() == 0 || expression.elements().get(0) == null || (
|
398
|
expression.elements().get(0).kind() == ExpressionKind.Value &&
|
399
|
expression.elements().get(0) instanceof ValueExpression<?> &&
|
400
|
((ValueExpression<?>)expression.elements().get(0)).value() == null))
|
401
|
{
|
402
|
|
403
|
type = new NullType();
|
404
|
}
|
405
|
else
|
406
|
{
|
407
|
final ArrayList<Expression> tmpitems = new ArrayList<Expression>();
|
408
|
for (final Expression item: expression.elements())
|
409
|
{
|
410
|
final Expression element = ResolveExpression(item);
|
411
|
if (element == null)
|
412
|
return null;
|
413
|
if (element.type() == null)
|
414
|
return Error(expression, "Void expression in list initializer");
|
415
|
|
416
|
if (element.kind() == ExpressionKind.Value &&
|
417
|
element instanceof ValueExpression<?> &&
|
418
|
((ValueExpression<?>)element).value() == null)
|
419
|
{
|
420
|
return Error(expression, "Not-In-List (nil) values not allowed in a list");
|
421
|
}
|
422
|
|
423
|
|
424
|
if (type == null)
|
425
|
type = element.type();
|
426
|
|
427
|
type = Type.CoverType(type, element.type());
|
428
|
if (type == null)
|
429
|
return Error(expression, "List constructor needs matching types");
|
430
|
|
431
|
tmpitems.add(element);
|
432
|
}
|
433
|
|
434
|
|
435
|
for (final Expression item: tmpitems)
|
436
|
{
|
437
|
if (!Type.TypeEqual(item.type(), type))
|
438
|
{
|
439
|
final Expression cast = new UnaryOperator(ExpressionKind.Cast, item, item.line(), item.pos());
|
440
|
cast.SetType(type);
|
441
|
newitems.add(cast);
|
442
|
}
|
443
|
else
|
444
|
newitems.add(item);
|
445
|
}
|
446
|
}
|
447
|
|
448
|
expression.SetElements(newitems);
|
449
|
if (comprehension == null)
|
450
|
restype = new ListType(type, newitems.size(), null);
|
451
|
else
|
452
|
restype = new ListType(type, -1, null);
|
453
|
|
454
|
expression.SetType(restype);
|
455
|
return expression;
|
456
|
}
|
457
|
private Expression ResolveExpression(SetConstructor expression)
|
458
|
{
|
459
|
Type type = null;
|
460
|
ListType restype = null;
|
461
|
Expression comprehension = null;
|
462
|
if (expression.comprehension() != null)
|
463
|
{
|
464
|
comprehension = ResolveExpressionNewScope(expression.comprehension());
|
465
|
|
466
|
if (comprehension == null)
|
467
|
return null;
|
468
|
|
469
|
if (comprehension.type() == null)
|
470
|
return Error(expression, "Set comprehension has void expression");
|
471
|
|
472
|
if (comprehension.type().kind() != TypeKind.BoolType)
|
473
|
return Error(expression, "Set comprehension has to be bool-expression");
|
474
|
|
475
|
expression.SetComprehension(comprehension);
|
476
|
|
477
|
if (expression.items().size() != 1)
|
478
|
return Error(expression, "Set comprehension expects one initializer expression");
|
479
|
}
|
480
|
|
481
|
final ArrayList<Expression> newitems = new ArrayList<Expression>();
|
482
|
for (final Expression item: expression.items())
|
483
|
{
|
484
|
final Expression element = ResolveExpression(item);
|
485
|
if (element == null)
|
486
|
return null;
|
487
|
|
488
|
if (element.type() == null)
|
489
|
return Error(expression, "Void expression in set initializer");
|
490
|
|
491
|
if (type == null)
|
492
|
type = element.type();
|
493
|
type = Type.CoverType(type, element.type());
|
494
|
if (type == null)
|
495
|
return Error(expression, "Set initializer needs matching types");
|
496
|
|
497
|
newitems.add(element);
|
498
|
}
|
499
|
expression.SetItems(newitems);
|
500
|
restype = new ListType(type, newitems.size(), null);
|
501
|
|
502
|
expression.SetType(restype);
|
503
|
return expression;
|
504
|
}
|
505
|
private Expression ResolveExpression(MapConstructor expression)
|
506
|
{
|
507
|
Type domain = null;
|
508
|
Type range = null;
|
509
|
final ArrayList<MapConstructor.MapItem> newitems = new ArrayList<MapConstructor.MapItem>();
|
510
|
|
511
|
for(final MapItem item: expression.items())
|
512
|
{
|
513
|
final Expression domexpr = ResolveExpression(item.key);
|
514
|
if (domexpr == null)
|
515
|
return null;
|
516
|
|
517
|
if (domexpr.type() == null)
|
518
|
return Error(expression, "Domain initializing expression void");
|
519
|
|
520
|
if (domain == null)
|
521
|
domain = domexpr.type();
|
522
|
|
523
|
final Expression rangeexpr = ResolveExpression(item.value);
|
524
|
if (rangeexpr == null)
|
525
|
return null;
|
526
|
|
527
|
if (rangeexpr.type() == null)
|
528
|
return Error(expression, "Range initializing expression void");
|
529
|
|
530
|
if (range == null)
|
531
|
range = rangeexpr.type();
|
532
|
|
533
|
domain = Type.CoverType(domain, domexpr.type());
|
534
|
range = Type.CoverType(range, rangeexpr.type());
|
535
|
if (domain == null)
|
536
|
return Error(expression, "Types of domain expressions do not match");
|
537
|
|
538
|
if (range == null)
|
539
|
return Error(expression, "Types of range expressions do not match");
|
540
|
|
541
|
newitems.add(new MapConstructor.MapItem(domexpr, rangeexpr));
|
542
|
}
|
543
|
|
544
|
expression.SetItems(newitems);
|
545
|
final MapType resulttype = new MapType(domain, range, newitems.size(), null);
|
546
|
expression.SetType(resulttype);
|
547
|
return expression;
|
548
|
}
|
549
|
private Expression ResolveExpression(TupleConstructor expression)
|
550
|
{
|
551
|
final TupleType typeToConstruct = (TupleType)expression.tupleType().type();
|
552
|
|
553
|
if (expression.values().size() != typeToConstruct.innerTypes().size())
|
554
|
return Error(expression, String.format("Tuple constructor has wrong arity. (%s <> %s)",
|
555
|
typeToConstruct.innerTypes().size(), expression.values().size()));
|
556
|
|
557
|
|
558
|
final ArrayList<Expression> newvalexprs = new ArrayList<Expression>();
|
559
|
|
560
|
final Iterator<Type> innerTargetType = typeToConstruct.innerTypes().iterator();
|
561
|
int freeVarCount = 0;
|
562
|
for (final Expression initexpr: expression.values())
|
563
|
{
|
564
|
final Type innerTargetTypeValue = innerTargetType.next();
|
565
|
Expression newval = ResolveExpression(initexpr);
|
566
|
if (newval == null)
|
567
|
return null;
|
568
|
if (newval.type() == null)
|
569
|
return Error(expression, "Element has void type");
|
570
|
|
571
|
if (newval.type().kind() == TypeKind.Any)
|
572
|
{
|
573
|
|
574
|
final AnyType freevar = (AnyType)newval.type();
|
575
|
freevar.VariableIdentifier().SetType(innerTargetTypeValue);
|
576
|
freevar.VariableIdentifier().SetInitialized(true);
|
577
|
freeVarCount++;
|
578
|
}
|
579
|
else
|
580
|
{
|
581
|
final Type acover = Type.CoverType(innerTargetTypeValue, newval.type());
|
582
|
if (acover == null || !Type.TypeEqualByKind(innerTargetTypeValue, acover))
|
583
|
return Error(expression,
|
584
|
String.format("Element in tuple constructor has non-matching type (%s <> %s)",
|
585
|
innerTargetTypeValue.toString(), newval.type().toString()));
|
586
|
|
587
|
if (!Type.TypeEqual(acover, newval.type()))
|
588
|
{
|
589
|
newval = new UnaryOperator(ExpressionKind.Cast, newval, newval.line(), newval.pos());
|
590
|
newval.SetType(acover);
|
591
|
}
|
592
|
if (Type.FirstTypeLessRange(innerTargetTypeValue, acover)) {
|
593
|
Warning(expression,
|
594
|
String.format("Tuple constructor may over/underflow: %s := %s",
|
595
|
innerTargetTypeValue.toString(), acover.toString()));
|
596
|
newval = new UnaryOperator(ExpressionKind.Cast, newval, newval.line(), newval.pos());
|
597
|
newval.SetType(innerTargetTypeValue);
|
598
|
}
|
599
|
}
|
600
|
|
601
|
newvalexprs.add(newval);
|
602
|
|
603
|
}
|
604
|
|
605
|
if (freeVarCount > 0)
|
606
|
{
|
607
|
if (freeVarCount != expression.values().size())
|
608
|
return Error(expression, String.format("Tuple constructor must have 0 or #elems (%s) free variables", expression.values().size()));
|
609
|
else
|
610
|
{
|
611
|
expression.SetIsMatcher(true);
|
612
|
m_matcherList.add(expression);
|
613
|
}
|
614
|
}
|
615
|
|
616
|
expression.SetTupleValues(newvalexprs);
|
617
|
|
618
|
expression.SetType(typeToConstruct);
|
619
|
return expression;
|
620
|
}
|
621
|
|
622
|
private Expression ResolveExpression(IdentifierExpression expression)
|
623
|
{
|
624
|
|
625
|
|
626
|
if ((expression.identifier().kind() == IdentifierKind.MethodIdentifier
|
627
|
|| expression.identifier().kind() == IdentifierKind.NamedActionIdentifier)
|
628
|
&& !m_entryExpression.callTargets().contains(expression.identifier()))
|
629
|
{
|
630
|
m_entryExpression.callTargets().add((FunctionIdentifier)expression.identifier());
|
631
|
}
|
632
|
|
633
|
return expression;
|
634
|
}
|
635
|
private Expression ResolveExpression(UnresolvedIdentifierExpression expression)
|
636
|
{
|
637
|
Identifier anid;
|
638
|
|
639
|
|
640
|
if (m_freeVariables.peek().Defined(expression.tokenText()))
|
641
|
anid = m_freeVariables.peek().Get(expression.tokenText());
|
642
|
else
|
643
|
anid = m_ParserState.Lookup(expression.tokenText(), expression.scope());
|
644
|
|
645
|
if (anid != null)
|
646
|
{
|
647
|
switch (anid.kind())
|
648
|
{
|
649
|
case TypeIdentifier:
|
650
|
|
651
|
if (anid instanceof SelfTypeIdentifier) {
|
652
|
final IdentifierExpression result = new IdentifierExpression(anid, expression.line(), expression.pos());
|
653
|
result.setIsSelf(true);
|
654
|
return result;
|
655
|
} else
|
656
|
return new TypeExpression(anid.type(), expression.line(), expression.pos());
|
657
|
|
658
|
case MethodIdentifier:
|
659
|
m_entryExpression.callTargets().add((FunctionIdentifier)anid);
|
660
|
final SelfTypeIdentifier selfid = (SelfTypeIdentifier)m_ParserState.Lookup("self", expression.scope());
|
661
|
if ((selfid != null) && ((OoActionSystemType)(selfid).type()).symbols().Defined(anid))
|
662
|
{
|
663
|
|
664
|
|
665
|
final IdentifierExpression aself = new IdentifierExpression(selfid, expression.line(), expression.pos());
|
666
|
aself.setIsSelf(true);
|
667
|
final AccessExpression localaccess = new AccessExpression(aself, new IdentifierExpression(anid, expression.line(), expression.pos()),
|
668
|
expression.line(), expression.pos());
|
669
|
ResolveExpression(localaccess);
|
670
|
return localaccess;
|
671
|
}
|
672
|
else
|
673
|
{
|
674
|
return new IdentifierExpression(anid, expression.line(), expression.pos());
|
675
|
}
|
676
|
|
677
|
case NamedActionIdentifier:
|
678
|
m_entryExpression.callTargets().add((FunctionIdentifier)anid);
|
679
|
return new IdentifierExpression(anid, expression.line(), expression.pos());
|
680
|
|
681
|
case Constant:
|
682
|
if (((ConstantIdentifier)anid).Value() != null)
|
683
|
return ((ConstantIdentifier)anid).Value().Clone();
|
684
|
else
|
685
|
return null;
|
686
|
|
687
|
default:
|
688
|
return new IdentifierExpression(anid, expression.line(), expression.pos());
|
689
|
}
|
690
|
}
|
691
|
else
|
692
|
{
|
693
|
final ExpressionVariableIdentifier freeVar =
|
694
|
new ExpressionVariableIdentifier(expression.tokenText(), expression.line(), expression.pos());
|
695
|
freeVar.SetType(new AnyType(freeVar));
|
696
|
m_freeVariables.peek().AddIdentifier(freeVar);
|
697
|
|
698
|
|
699
|
Warning(freeVar, String.format("Free variable in expression: '%s'.", freeVar.tokenText()));
|
700
|
|
701
|
return new IdentifierExpression(freeVar, expression.line(), expression.pos());
|
702
|
}
|
703
|
}
|
704
|
private Expression ResolveExpression(TupleMapAccessExpression expression)
|
705
|
{
|
706
|
final Expression child = ResolveExpression(expression.child());
|
707
|
if (child == null)
|
708
|
return null;
|
709
|
|
710
|
final Expression arg = ResolveExpression(expression.argument());
|
711
|
if (arg == null)
|
712
|
return null;
|
713
|
|
714
|
|
715
|
assert(child.type() != null);
|
716
|
|
717
|
if ((child.kind() != ExpressionKind.Type) && (child.type().kind() == TypeKind.TupleType))
|
718
|
{
|
719
|
if ((arg.kind() != ExpressionKind.Value)
|
720
|
|| (((LeafExpression)arg).valueType() != LeafTypeEnum.integer))
|
721
|
{
|
722
|
return Error(expression, "Argument to tuple access must be constant integer value!");
|
723
|
}
|
724
|
final TupleType aTuple = (TupleType)child.type();
|
725
|
@SuppressWarnings("unchecked")
|
726
|
final
|
727
|
ValueExpression<Integer> aval = (ValueExpression<Integer>)arg;
|
728
|
if ((aval.value() < 0) || (aval.value() >= aTuple.innerTypes().size()))
|
729
|
{
|
730
|
return Error(expression, "Argument to tuple access has to be in range 0..#elems-1");
|
731
|
}
|
732
|
|
733
|
|
734
|
|
735
|
|
736
|
|
737
|
|
738
|
|
739
|
|
740
|
expression.SetType(aTuple.innerTypes().get(aval.value()));
|
741
|
}
|
742
|
else if ((child.kind() != ExpressionKind.Type) && (child.type().kind() == TypeKind.MapType))
|
743
|
{
|
744
|
final MapType amap = (MapType)child.type();
|
745
|
expression.SetType(amap.toType());
|
746
|
}
|
747
|
else if ((child.kind() != ExpressionKind.Type) && (child.type().kind() == TypeKind.ListType))
|
748
|
{
|
749
|
|
750
|
final ListType alist = (ListType)child.type();
|
751
|
expression.SetType(alist.innerType());
|
752
|
}
|
753
|
else
|
754
|
{
|
755
|
return Error(expression, "Not a list, tuple, or map instance");
|
756
|
}
|
757
|
expression.SetArgument(arg);
|
758
|
expression.SetChild(child);
|
759
|
return expression;
|
760
|
}
|
761
|
private Expression ResolveExpression(CallExpression expression)
|
762
|
{
|
763
|
return ResolveExpression(expression, false);
|
764
|
}
|
765
|
private Expression ResolveExpression(CallExpression expression, boolean allowFewerParameters)
|
766
|
{
|
767
|
|
768
|
final Expression child = ResolveExpression(expression.child());
|
769
|
if (child == null)
|
770
|
return null;
|
771
|
|
772
|
assert(child.type() != null);
|
773
|
|
774
|
expression.SetChild(child);
|
775
|
|
776
|
if (child.type().kind() != TypeKind.FunctionType)
|
777
|
{
|
778
|
return Error(expression, "No function to call!");
|
779
|
}
|
780
|
|
781
|
|
782
|
final FunctionType funtype = (FunctionType)child.type();
|
783
|
|
784
|
|
785
|
|
786
|
|
787
|
|
788
|
|
789
|
|
790
|
|
791
|
|
792
|
|
793
|
|
794
|
|
795
|
|
796
|
|
797
|
|
798
|
final int argsSpec = funtype.parameter().size();
|
799
|
final int argsHave = expression.arguments().size();
|
800
|
if (argsHave < argsSpec && !allowFewerParameters)
|
801
|
{
|
802
|
return Error(expression, "Too few parameters in function call");
|
803
|
}
|
804
|
if (argsHave > argsSpec)
|
805
|
{
|
806
|
return Error(expression, "Too much parameters in function call");
|
807
|
}
|
808
|
|
809
|
final ArrayList<Expression> newargs = new ArrayList<Expression>();
|
810
|
final Iterator<Type> demandedArgType = funtype.parameter().iterator();
|
811
|
for (final Expression arg: expression.arguments())
|
812
|
{
|
813
|
final Type demandedArgTypeValue = demandedArgType.next();
|
814
|
Expression newarg = ResolveExpression(arg);
|
815
|
if (newarg == null)
|
816
|
return null;
|
817
|
|
818
|
if (newarg.GetUninitializedFreeVariables().size() > 0)
|
819
|
Error(arg, String.format("Undefined variable '%s'",
|
820
|
newarg.GetUninitializedFreeVariables().get(0).tokenText()));
|
821
|
|
822
|
final Expression constantvalue = newarg.kind() == ExpressionKind.Value ? newarg : null;
|
823
|
|
824
|
final Type acover = Type.CoverType(newarg.type(), demandedArgTypeValue);
|
825
|
if (acover == null || !Type.TypeEqualByKind(demandedArgTypeValue, acover))
|
826
|
return Error(arg, String.format("Argument type does not match; expected: %s delivered: %s",
|
827
|
demandedArgTypeValue.toString(), newarg.type().toString()));
|
828
|
|
829
|
newarg = UnaryOperator.TryCoerceUp(newarg, acover);
|
830
|
|
831
|
if (Type.FirstTypeLessRange(demandedArgTypeValue, acover))
|
832
|
{
|
833
|
if (constantvalue == null)
|
834
|
{
|
835
|
Warning(arg, String.format("Call parameter may over/underflow: %s := %s",
|
836
|
demandedArgTypeValue.toString(), acover.toString()));
|
837
|
final UnaryOperator cast = new UnaryOperator(ExpressionKind.Cast, newarg, newarg.line(), newarg.pos());
|
838
|
cast.SetType(demandedArgTypeValue);
|
839
|
newarg = cast;
|
840
|
}
|
841
|
else
|
842
|
{
|
843
|
Error(arg, String.format("Call parameter out of range (%s := %s)",
|
844
|
demandedArgTypeValue.toString(), constantvalue.toString()));
|
845
|
}
|
846
|
}
|
847
|
|
848
|
newargs.add(newarg);
|
849
|
}
|
850
|
expression.SetArguments(newargs);
|
851
|
|
852
|
if (funtype.returnType() != null)
|
853
|
expression.SetType(funtype.returnType());
|
854
|
return expression;
|
855
|
}
|
856
|
private Expression ResolveExpression(AccessExpression expression)
|
857
|
{
|
858
|
Expression lhs = ResolveExpression(expression.left());
|
859
|
if (lhs == null)
|
860
|
return null;
|
861
|
if (!(expression.right() instanceof UnresolvedIdentifierExpression))
|
862
|
{
|
863
|
expression.SetRightChild(ResolveExpression(expression.right()));
|
864
|
expression.SetType(expression.right().type());
|
865
|
return expression;
|
866
|
}
|
867
|
|
868
|
final boolean selfAccess = (lhs.kind() == ExpressionKind.Identifier) && ((IdentifierExpression)lhs).isSelf();
|
869
|
final boolean staticAccess = lhs.kind() == ExpressionKind.Type;
|
870
|
final UnresolvedIdentifierExpression access = (UnresolvedIdentifierExpression)expression.right();
|
871
|
|
872
|
Type atype = lhs.type();
|
873
|
if ((lhs.kind() == ExpressionKind.Call) && (atype == null))
|
874
|
{
|
875
|
return Error(access, "Can not access return type of void-function");
|
876
|
}
|
877
|
else if (atype == null)
|
878
|
{
|
879
|
return Error(access, "Can not access member of a void type");
|
880
|
}
|
881
|
|
882
|
|
883
|
if (atype.kind() == TypeKind.FunctionType)
|
884
|
{
|
885
|
|
886
|
final FunctionType fun = (FunctionType)atype;
|
887
|
|
888
|
|
889
|
if (fun.parameter().size() > 0)
|
890
|
return Error(access, "Implicit function call not possible: Too few parameters.");
|
891
|
|
892
|
|
893
|
if (fun.returnType() == null)
|
894
|
return Error(access, "Can not access return type of void-function!");
|
895
|
|
896
|
|
897
|
atype = fun.returnType();
|
898
|
|
899
|
lhs = new CallExpression(lhs, null, lhs.line(), lhs.pos(), null);
|
900
|
lhs.SetType(atype);
|
901
|
}
|
902
|
|
903
|
|
904
|
expression.SetLeftChild(lhs);
|
905
|
|
906
|
|
907
|
switch (atype.kind())
|
908
|
{
|
909
|
case OoActionSystemType:
|
910
|
final Identifier anid = ((OoActionSystemType)atype).ResolveIdentifier(access.tokenText());
|
911
|
if (anid != null)
|
912
|
{
|
913
|
if (anid.kind() == IdentifierKind.MethodIdentifier && !m_entryExpression.callTargets().contains(anid))
|
914
|
m_entryExpression.callTargets().add((FunctionIdentifier)anid);
|
915
|
|
916
|
if (staticAccess)
|
917
|
{
|
918
|
if ((anid.kind() == IdentifierKind.AttributeIdentifier) &&
|
919
|
(((AttributeIdentifier)anid).isStatic()))
|
920
|
{
|
921
|
final IdentifierExpression newrhs = new IdentifierExpression(anid, access.line(), access.pos());
|
922
|
expression.SetRightChild(newrhs);
|
923
|
}
|
924
|
else
|
925
|
return Error(access, "Can not access non-static member of an action system");
|
926
|
}
|
927
|
else
|
928
|
{
|
929
|
if (anid.kind() != IdentifierKind.MethodIdentifier && !selfAccess)
|
930
|
return Error(access, "Can only access methods of action system objects");
|
931
|
else
|
932
|
{
|
933
|
final IdentifierExpression newrhs = new IdentifierExpression(anid, access.line(), access.pos());
|
934
|
expression.SetRightChild(newrhs);
|
935
|
}
|
936
|
}
|
937
|
}
|
938
|
else
|
939
|
return Error(access, String.format("%s no member of %s",
|
940
|
access.tokenText(), ((OoActionSystemType)atype).identifier().tokenText()));
|
941
|
break;
|
942
|
case EnumeratedType:
|
943
|
final EnumType anEnum = (EnumType)atype;
|
944
|
if (!staticAccess)
|
945
|
{
|
946
|
return Error(access, "Enum values can only be accessed statically.");
|
947
|
}
|
948
|
if (anEnum.symbolTable().Defined(access.tokenText()))
|
949
|
{
|
950
|
final Identifier enumid = anEnum.symbolTable().Get(access.tokenText());
|
951
|
final IdentifierExpression newrhs = new IdentifierExpression(enumid, access.line(), access.pos());
|
952
|
expression.SetRightChild(newrhs);
|
953
|
}
|
954
|
else
|
955
|
return Error(access, String.format("%s not contained in enum %s",
|
956
|
access.tokenText(), anEnum.identifier().tokenText()));
|
957
|
break;
|
958
|
default:
|
959
|
|
960
|
return Error(expression, "Expected: System, Enum, Func, or QR type");
|
961
|
}
|
962
|
|
963
|
expression.SetType(expression.right().type());
|
964
|
return expression;
|
965
|
}
|
966
|
private Expression ResolveExpression(UnaryOperator expression)
|
967
|
{
|
968
|
final Expression child = ResolveExpression(expression.child());
|
969
|
|
970
|
if (child == null)
|
971
|
return null;
|
972
|
|
973
|
if (child.type() == null)
|
974
|
return Error(expression, "Can not apply unary operator to void-expression");
|
975
|
|
976
|
|
977
|
switch (expression.kind())
|
978
|
{
|
979
|
case Primed:
|
980
|
expression.SetType(child.type());
|
981
|
break;
|
982
|
|
983
|
|
984
|
case dom:
|
985
|
if (child.type().kind() != TypeKind.MapType)
|
986
|
return Error(expression, "Domain operator only applicable to map types.");
|
987
|
MapType amap = (MapType)child.type();
|
988
|
ListType list = new ListType(amap.fromType(), amap.maxNumberOfElements(), null);
|
989
|
expression.SetType(list);
|
990
|
break;
|
991
|
case range:
|
992
|
if (child.type().kind() != TypeKind.MapType)
|
993
|
return Error(expression, "Range operator only applicable to map types.");
|
994
|
amap = (MapType)child.type();
|
995
|
list = new ListType(amap.toType(), amap.maxNumberOfElements(), null);
|
996
|
expression.SetType(list);
|
997
|
break;
|
998
|
case merge:
|
999
|
if ((child.type().kind() == TypeKind.ListType) &&
|
1000
|
(((ListType)child.type()).innerType().kind() == TypeKind.MapType))
|
1001
|
{
|
1002
|
expression.SetType(((ListType)child.type()).innerType());
|
1003
|
break;
|
1004
|
}
|
1005
|
else
|
1006
|
return Error(expression, "Merge operator only applicable to a list of maps");
|
1007
|
|
1008
|
case card:
|
1009
|
if (child.type().kind() != TypeKind.ListType)
|
1010
|
return Error(expression, "Cardinality operator only applicable to list types.");
|
1011
|
expression.SetType(new IntType(0, ((ListType)child.type()).maxNumberOfElements(), null));
|
1012
|
break;
|
1013
|
case dconc:
|
1014
|
if ((child.type().kind() == TypeKind.ListType)
|
1015
|
&& (((ListType)child.type()).innerType().kind() == TypeKind.ListType))
|
1016
|
{
|
1017
|
list = (ListType)child.type();
|
1018
|
final ListType innerlist = (ListType)list.innerType();
|
1019
|
final int maxnumber = innerlist.maxNumberOfElements() * list.maxNumberOfElements();
|
1020
|
expression.SetType(new ListType(innerlist.innerType(), maxnumber, null));
|
1021
|
break;
|
1022
|
}
|
1023
|
else
|
1024
|
return Error(expression, "Distributed Concatenation operator only applicable to list of lists");
|
1025
|
case dinter:
|
1026
|
if ((child.type().kind() == TypeKind.ListType)
|
1027
|
&& (((ListType)child.type()).innerType().kind() == TypeKind.ListType))
|
1028
|
{
|
1029
|
list = (ListType)child.type();
|
1030
|
final ListType innerlist = (ListType)list.innerType();
|
1031
|
final int maxnumber = innerlist.maxNumberOfElements();
|
1032
|
expression.SetType(new ListType(innerlist.innerType(), maxnumber, null));
|
1033
|
break;
|
1034
|
}
|
1035
|
else
|
1036
|
return Error(expression, "Distributed Intersection operator only applicable to list of lists");
|
1037
|
case dunion:
|
1038
|
if ((child.type().kind() == TypeKind.ListType)
|
1039
|
&& (((ListType)child.type()).innerType().kind() == TypeKind.ListType))
|
1040
|
{
|
1041
|
list = (ListType)child.type();
|
1042
|
final ListType innerlist = (ListType)list.innerType();
|
1043
|
|
1044
|
final int maxnumber = innerlist.maxNumberOfElements() * list.maxNumberOfElements();
|
1045
|
expression.SetType(new ListType(innerlist.innerType(), maxnumber, null));
|
1046
|
break;
|
1047
|
}
|
1048
|
else
|
1049
|
return Error(expression, "Distributed Union operator only applicable to list of lists");
|
1050
|
case elems:
|
1051
|
if (child.type().kind() != TypeKind.ListType)
|
1052
|
return Error(expression, "Element operator only applicable to list");
|
1053
|
expression.SetType(child.type());
|
1054
|
break;
|
1055
|
case head:
|
1056
|
if (child.type().kind() != TypeKind.ListType)
|
1057
|
return Error(expression, "Head operator only applicable to list");
|
1058
|
expression.SetType(((ListType)child.type()).innerType());
|
1059
|
break;
|
1060
|
case inds:
|
1061
|
if (child.type().kind() != TypeKind.ListType)
|
1062
|
return Error(expression, "Indices operator only applicable to list");
|
1063
|
list = (ListType)child.type();
|
1064
|
final IntType inner = new IntType(0, list.maxNumberOfElements(), null);
|
1065
|
expression.SetType(new ListType(inner, list.maxNumberOfElements(), null));
|
1066
|
break;
|
1067
|
case len:
|
1068
|
if (child.type().kind() != TypeKind.ListType)
|
1069
|
return Error(expression, "Length operator only applicable to list");
|
1070
|
list = (ListType)child.type();
|
1071
|
expression.SetType(new IntType(0, list.maxNumberOfElements(), null));
|
1072
|
break;
|
1073
|
case tail:
|
1074
|
if (child.type().kind() != TypeKind.ListType)
|
1075
|
return Error(expression, "Tail operator only applicable to list");
|
1076
|
list = (ListType)child.type();
|
1077
|
if (list.maxNumberOfElements() == 0)
|
1078
|
return Error(expression, "Tail operator only applicable to list of length > 0");
|
1079
|
final int newmaxelems = list.maxNumberOfElements() - 1;
|
1080
|
if (newmaxelems == 0)
|
1081
|
Warning(expression, "Tail operator returns empty list.");
|
1082
|
|
1083
|
expression.SetType(new ListType(list.innerType(), newmaxelems, null));
|
1084
|
break;
|
1085
|
|
1086
|
case unminus:
|
1087
|
if (!child.type().IsNumeric())
|
1088
|
return Error(expression, "Unary minus only applicable to numeric types");
|
1089
|
expression.SetType(Expression.ArithmeticCover(child.type(), null, expression.kind()));
|
1090
|
break;
|
1091
|
case unplus:
|
1092
|
if (!child.type().IsNumeric())
|
1093
|
return Error(expression, "Unary plus only applicable to numeric types");
|
1094
|
expression.SetType(child.type());
|
1095
|
break;
|
1096
|
case abs:
|
1097
|
if (!child.type().IsNumeric())
|
1098
|
return Error(expression, "Abs only applicable to numeric types");
|
1099
|
expression.SetType(child.type());
|
1100
|
break;
|
1101
|
case not:
|
1102
|
if (
|
1103
|
(child.type().kind() != TypeKind.BoolType))
|
1104
|
return Error(expression, "Not only applicable to bool types");
|
1105
|
expression.SetType(child.type());
|
1106
|
break;
|
1107
|
|
1108
|
case forall:
|
1109
|
expression.SetType(new BoolType(null));
|
1110
|
break;
|
1111
|
case exists:
|
1112
|
expression.SetType(new BoolType(null));
|
1113
|
break;
|
1114
|
default:
|
1115
|
throw new NotImplementedException();
|
1116
|
}
|
1117
|
|
1118
|
expression.SetChild(child);
|
1119
|
return expression;
|
1120
|
}
|
1121
|
@SuppressWarnings("unchecked")
|
1122
|
private Expression ResolveExpression(BinaryOperator expression)
|
1123
|
{
|
1124
|
Expression lhs = ResolveExpression(expression.left());
|
1125
|
Expression rhs = ResolveExpression(expression.right());
|
1126
|
|
1127
|
|
1128
|
|
1129
|
if ((lhs == null) || (rhs == null))
|
1130
|
return null;
|
1131
|
|
1132
|
final Type lt = lhs.type();
|
1133
|
final Type rt = rhs.type();
|
1134
|
|
1135
|
if ((lt == null) || (rt == null))
|
1136
|
return Error(expression, "Binary operator not applicable to void-type subexpression.");
|
1137
|
|
1138
|
|
1139
|
switch (expression.kind())
|
1140
|
{
|
1141
|
|
1142
|
case domresby:
|
1143
|
case domresto:
|
1144
|
if (lt.kind() != TypeKind.ListType)
|
1145
|
return Error(expression, "Domain restriction operator expects list on LHS");
|
1146
|
if (rt.kind() != TypeKind.MapType)
|
1147
|
return Error(expression, "Domain restriction operator expects map on RHS");
|
1148
|
ListType domlist = (ListType)lt;
|
1149
|
MapType domMap = (MapType)rt;
|
1150
|
if (!Type.TypeEqual(domlist.innerType(), domMap.fromType()))
|
1151
|
return Error(expression, "Inner type of list and domain-type of map do not match");
|
1152
|
|
1153
|
expression.SetType(domMap);
|
1154
|
break;
|
1155
|
case rngresby:
|
1156
|
case rngresto:
|
1157
|
if (lt.kind() != TypeKind.MapType)
|
1158
|
return Error(expression, "Range restriction operator expects map on LHS");
|
1159
|
if (rt.kind() != TypeKind.ListType)
|
1160
|
return Error(expression, "Rangle restriction operator expects list on RHS");
|
1161
|
final ListType rangelist = (ListType)rt;
|
1162
|
domMap = (MapType)lt;
|
1163
|
if (!Type.TypeEqual(rangelist.innerType(), domMap.fromType()))
|
1164
|
return Error(expression, "Inner type of list and rangle-type of map do not match");
|
1165
|
|
1166
|
expression.SetType(domMap);
|
1167
|
break;
|
1168
|
case munion:
|
1169
|
if (lt.kind() != TypeKind.MapType ||
|
1170
|
rt.kind() != TypeKind.MapType)
|
1171
|
return Error(expression, "Map union expects maps on LHS and RHS");
|
1172
|
domMap = (MapType)lt;
|
1173
|
MapType rngMap = (MapType)rt;
|
1174
|
if (!Type.TypeEqual(domMap.fromType(), rngMap.fromType()) ||
|
1175
|
!Type.TypeEqual(domMap.toType(), rngMap.toType()))
|
1176
|
return Error(expression, "Domain and Range types of maps must be equal");
|
1177
|
|
1178
|
final MapType resMap = new MapType(domMap.fromType(), domMap.toType(),
|
1179
|
domMap.maxNumberOfElements() + rngMap.maxNumberOfElements(), null);
|
1180
|
expression.SetType(resMap);
|
1181
|
break;
|
1182
|
|
1183
|
case conc:
|
1184
|
if (lt.kind() != TypeKind.ListType ||
|
1185
|
rt.kind() != TypeKind.ListType)
|
1186
|
return Error(expression, "List concatenation expects two lists.");
|
1187
|
ListType la = (ListType)lt;
|
1188
|
ListType lb = (ListType)rt;
|
1189
|
|
1190
|
if (lb.innerType().kind() == TypeKind.Null || lb.maxNumberOfElements() == 0)
|
1191
|
return lhs;
|
1192
|
if (la.innerType().kind() == TypeKind.Null || la.maxNumberOfElements() == 0)
|
1193
|
return rhs;
|
1194
|
if (!Type.TypeEqual(la.innerType(), lb.innerType()))
|
1195
|
return Error(expression, String.format("Set/List concatenation expects two lists of same type. (%s <> %s)", la.toString(), lb.toString()));
|
1196
|
ListType resultList = new ListType(la.innerType(),
|
1197
|
la.maxNumberOfElements() + lb.maxNumberOfElements(), null);
|
1198
|
expression.SetType(resultList);
|
1199
|
break;
|
1200
|
case diff:
|
1201
|
if (lt.kind() != TypeKind.ListType ||
|
1202
|
rt.kind() != TypeKind.ListType)
|
1203
|
return Error(expression, "Set difference expects two lists.");
|
1204
|
la = (ListType)lt;
|
1205
|
lb = (ListType)rt;
|
1206
|
if (!Type.TypeEqual(la.innerType(), lb.innerType()))
|
1207
|
return Error(expression, "Set difference expects two lists of same type.");
|
1208
|
expression.SetType(la);
|
1209
|
break;
|
1210
|
case inter:
|
1211
|
if (lt.kind() != TypeKind.ListType ||
|
1212
|
rt.kind() != TypeKind.ListType)
|
1213
|
return Error(expression, "Set intersection expects two lists.");
|
1214
|
la = (ListType)lt;
|
1215
|
lb = (ListType)rt;
|
1216
|
if (!Type.TypeEqual(la.innerType(), lb.innerType()))
|
1217
|
return Error(expression, "Set intersection expects two lists of same type.");
|
1218
|
expression.SetType(la.maxNumberOfElements() > lb.maxNumberOfElements() ? la : lb);
|
1219
|
break;
|
1220
|
case elemin:
|
1221
|
case notelemin:
|
1222
|
if (rt.kind() != TypeKind.ListType)
|
1223
|
return Error(expression, "Element (not) in operator expects list-type as RHS.");
|
1224
|
lb = (ListType)rt;
|
1225
|
if (lhs.kind() == ExpressionKind.Value)
|
1226
|
lhs = UnaryOperator.TryCoerceUp(lhs, lb.innerType());
|
1227
|
final Type leftType = lhs.type();
|
1228
|
if (!Type.TypeEqual(leftType, lb.innerType()))
|
1229
|
return Error(expression, String.format("List and element must be of same type: %s in %s",
|
1230
|
lt == null ? "<null>" : lt.toString(), lb ==null || lb.innerType() == null ? "<null>" : lb.innerType().toString()));
|
1231
|
expression.SetType(new BoolType(null));
|
1232
|
break;
|
1233
|
case subset:
|
1234
|
if (lt.kind() != TypeKind.ListType ||
|
1235
|
rt.kind() != TypeKind.ListType)
|
1236
|
return Error(expression, "Subset operation expects two lists.");
|
1237
|
la = (ListType)lt;
|
1238
|
lb = (ListType)rt;
|
1239
|
if (!Type.TypeEqual(la.innerType(), lb.innerType()))
|
1240
|
return Error(expression, "Subset operation expects two lists of same type.");
|
1241
|
expression.SetType(new BoolType(null));
|
1242
|
break;
|
1243
|
case union:
|
1244
|
if (lt.kind() != TypeKind.ListType ||
|
1245
|
rt.kind() != TypeKind.ListType)
|
1246
|
return Error(expression, "Set union expects two lists.");
|
1247
|
la = (ListType)lt;
|
1248
|
lb = (ListType)rt;
|
1249
|
|
1250
|
if (la.innerType().kind() == TypeKind.Null || la.maxNumberOfElements() == 0)
|
1251
|
return rhs;
|
1252
|
if (lb.innerType().kind() == TypeKind.Null || lb.maxNumberOfElements() == 0)
|
1253
|
return lhs;
|
1254
|
|
1255
|
if (!Type.TypeEqual(la.innerType(), lb.innerType()))
|
1256
|
return Error(expression, "Set union expects two lists of same type.");
|
1257
|
resultList = new ListType(la.innerType(),
|
1258
|
la.maxNumberOfElements() + lb.maxNumberOfElements(), null);
|
1259
|
expression.SetType(resultList);
|
1260
|
break;
|
1261
|
|
1262
|
|
1263
|
case pow:
|
1264
|
if (!lt.IsNumeric() || !rt.IsNumeric())
|
1265
|
return Error(expression, "Operator expects LHS and RHS to be numeric");
|
1266
|
if (lt.kind() == TypeKind.IntType && rt.kind() == TypeKind.IntType)
|
1267
|
expression.SetType(lt);
|
1268
|
else
|
1269
|
if (lt.kind() == TypeKind.FloatType)
|
1270
|
expression.SetType(lt);
|
1271
|
else
|
1272
|
{
|
1273
|
final IntType anint = (IntType)lt;
|
1274
|
expression.SetType(new FloatType(anint.rangeLow(), anint.rangeHigh(),
|
1275
|
FloatType.defaultPrecision(), null));
|
1276
|
}
|
1277
|
break;
|
1278
|
|
1279
|
case idiv:
|
1280
|
case mod:
|
1281
|
if (rt.kind() != TypeKind.IntType || lt.kind() != TypeKind.IntType)
|
1282
|
return Error(expression, "Operator expects LHS and RHS to be integer");
|
1283
|
expression.SetType(Expression.ArithmeticCover(lt, rt, expression.kind()));
|
1284
|
break;
|
1285
|
case div:
|
1286
|
if (!rt.IsNumeric() || !lt.IsNumeric())
|
1287
|
return Error(expression, "Operator expects LHS and RHS to be numeric");
|
1288
|
if (lhs.type() instanceof ValuedEnumType)
|
1289
|
lhs = UnaryOperator.TryCoerceUp(lhs, ((ValuedEnumType)lhs.type()).getIntType());
|
1290
|
if (rhs.type() instanceof ValuedEnumType)
|
1291
|
rhs = UnaryOperator.TryCoerceUp(rhs, ((ValuedEnumType)rhs.type()).getIntType());
|
1292
|
Type cover = Expression.ArithmeticCover(lt, rt, expression.kind());
|
1293
|
expression.SetType(cover);
|
1294
|
break;
|
1295
|
case minus:
|
1296
|
if (!rt.IsNumeric() || !lt.IsNumeric())
|
1297
|
return Error(expression, "Operator expects LHS and RHS to be numeric");
|
1298
|
if (lhs.type() instanceof ValuedEnumType)
|
1299
|
lhs = UnaryOperator.TryCoerceUp(lhs, ((ValuedEnumType)lhs.type()).getIntType());
|
1300
|
if (rhs.type() instanceof ValuedEnumType)
|
1301
|
rhs = UnaryOperator.TryCoerceUp(rhs, ((ValuedEnumType)rhs.type()).getIntType());
|
1302
|
cover = Expression.ArithmeticCover(lt, rt, expression.kind());
|
1303
|
expression.SetType(cover);
|
1304
|
break;
|
1305
|
case prod:
|
1306
|
if (!rt.IsNumeric() || !lt.IsNumeric())
|
1307
|
return Error(expression, "Operator expects LHS and RHS to be numeric");
|
1308
|
if (lhs.type() instanceof ValuedEnumType)
|
1309
|
lhs = UnaryOperator.TryCoerceUp(lhs, ((ValuedEnumType)lhs.type()).getIntType());
|
1310
|
if (rhs.type() instanceof ValuedEnumType)
|
1311
|
rhs = UnaryOperator.TryCoerceUp(rhs, ((ValuedEnumType)rhs.type()).getIntType());
|
1312
|
cover = Expression.ArithmeticCover(lt, rt, expression.kind());
|
1313
|
expression.SetType(cover);
|
1314
|
break;
|
1315
|
case sum:
|
1316
|
if (!rt.IsNumeric() || !lt.IsNumeric())
|
1317
|
return Error(expression, "Operator expects LHS and RHS to be numeric");
|
1318
|
if (lhs.type() instanceof ValuedEnumType)
|
1319
|
lhs = UnaryOperator.TryCoerceUp(lhs, ((ValuedEnumType)lhs.type()).getIntType());
|
1320
|
if (rhs.type() instanceof ValuedEnumType)
|
1321
|
rhs = UnaryOperator.TryCoerceUp(rhs, ((ValuedEnumType)rhs.type()).getIntType());
|
1322
|
cover = Expression.ArithmeticCover(lt, rt, expression.kind());
|
1323
|
expression.SetType(cover);
|
1324
|
break;
|
1325
|
case greater:
|
1326
|
case greaterequal:
|
1327
|
case less:
|
1328
|
case lessequal:
|
1329
|
if (!((rt.IsNumeric() && lt.IsNumeric()) ))
|
1330
|
return Error(expression, "Operator expects LHS and RHS to be numeric");
|
1331
|
cover = Type.CoverType(lt, rt);
|
1332
|
if (cover != null)
|
1333
|
{
|
1334
|
lhs = UnaryOperator.TryCoerceUp(lhs, cover);
|
1335
|
rhs = UnaryOperator.TryCoerceUp(rhs, cover);
|
1336
|
expression.SetType(new BoolType(null));
|
1337
|
}
|
1338
|
else
|
1339
|
return Error(expression, String.format("Operator expects LHS and RHS to be of same type (%s <> %s)", lhs.type().toString(), rhs.type().toString()));
|
1340
|
break;
|
1341
|
|
1342
|
case and:
|
1343
|
if (rt.kind() != TypeKind.BoolType || lt.kind() != TypeKind.BoolType)
|
1344
|
return Error(expression, "Operator expects LHS and RHS of bool.");
|
1345
|
|
1346
|
expression.SetType(rt);
|
1347
|
|
1348
|
if (rhs.kind() == ExpressionKind.Value
|
1349
|
&& ((ValueExpression<Boolean>)rhs).value() == false)
|
1350
|
return rhs;
|
1351
|
else if (lhs.kind() == ExpressionKind.Value
|
1352
|
&& ((ValueExpression<Boolean>)lhs).value() == false)
|
1353
|
return lhs;
|
1354
|
|
1355
|
|
1356
|
break;
|
1357
|
case biimplies:
|
1358
|
if (rt.kind() != TypeKind.BoolType || lt.kind() != TypeKind.BoolType)
|
1359
|
return Error(expression, "Operator expects LHS and RHS of bool.");
|
1360
|
expression.SetType(rt);
|
1361
|
break;
|
1362
|
case implies:
|
1363
|
if (rt.kind() != TypeKind.BoolType || lt.kind() != TypeKind.BoolType)
|
1364
|
return Error(expression, "Operator expects LHS and RHS of bool.");
|
1365
|
expression.SetType(rt);
|
1366
|
|
1367
|
|
1368
|
if (lhs.kind() == ExpressionKind.Value
|
1369
|
&& ((ValueExpression<Boolean>)lhs).value() == false)
|
1370
|
{
|
1371
|
final Expression shortcut = new ValueExpression<Boolean>(true, expression.line(), expression.pos(), Boolean.class);
|
1372
|
shortcut.SetType(lt);
|
1373
|
return shortcut;
|
1374
|
}
|
1375
|
|
1376
|
break;
|
1377
|
case or:
|
1378
|
if (rt.kind() != TypeKind.BoolType || lt.kind() != TypeKind.BoolType)
|
1379
|
return Error(expression, "Operator expects LHS and RHS of bool.");
|
1380
|
expression.SetType(rt);
|
1381
|
|
1382
|
if (rhs.kind() == ExpressionKind.Value
|
1383
|
&& ((ValueExpression<Boolean>)rhs).value() == true)
|
1384
|
return rhs;
|
1385
|
else if (lhs.kind() == ExpressionKind.Value
|
1386
|
&& ((ValueExpression<Boolean>)lhs).value() == true)
|
1387
|
return lhs;
|
1388
|
break;
|
1389
|
|
1390
|
case equal:
|
1391
|
case notequal:
|
1392
|
cover = Type.CoverType(lt, rt);
|
1393
|
if (cover != null)
|
1394
|
{
|
1395
|
|
1396
|
if (expression.kind() == ExpressionKind.equal)
|
1397
|
{
|
1398
|
if (lhs.kind() == ExpressionKind.TupleConstr &&
|
1399
|
((TupleConstructor)lhs).isMatcher())
|
1400
|
{
|
1401
|
if (rhs.kind() == ExpressionKind.TupleConstr &&
|
1402
|
((TupleConstructor)rhs).isMatcher())
|
1403
|
return Error(expression, "Free variables on both sides of the equality sign in tuple constructors.");
|
1404
|
m_matcherList.remove(lhs);
|
1405
|
}
|
1406
|
else if (rhs.kind() == ExpressionKind.TupleConstr &&
|
1407
|
((TupleConstructor)rhs).isMatcher())
|
1408
|
{
|
1409
|
if (lhs.kind() == ExpressionKind.TupleConstr &&
|
1410
|
((TupleConstructor)lhs).isMatcher())
|
1411
|
return Error(expression, "Free variables on both sides of the equality sign in tuple constructors.");
|
1412
|
m_matcherList.remove(rhs);
|
1413
|
}
|
1414
|
}
|
1415
|
|
1416
|
lhs = UnaryOperator.TryCoerceUp(lhs, cover);
|
1417
|
rhs = UnaryOperator.TryCoerceUp(rhs, cover);
|
1418
|
expression.SetType(new BoolType(null));
|
1419
|
}
|
1420
|
else
|
1421
|
return Error(expression, String.format("Operator expects LHS and RHS to be of same type (%s <> %s)", lhs.type().toString(), rhs.type().toString()));
|
1422
|
break;
|
1423
|
case seqmod_mapoverride:
|
1424
|
if (rt.kind() != TypeKind.MapType)
|
1425
|
return Error(expression, "Map expected as RHS on sequence modification or map override.");
|
1426
|
|
1427
|
if (lt.kind() == TypeKind.ListType)
|
1428
|
{
|
1429
|
|
1430
|
domlist = (ListType)lt;
|
1431
|
rngMap = (MapType)rt;
|
1432
|
if (rngMap.fromType().kind() != TypeKind.IntType)
|
1433
|
return Error(expression, "Domain of map has to be integer");
|
1434
|
if (!Type.TypeEqual(domlist.innerType(), rngMap.toType()))
|
1435
|
return Error(expression, "Type of list expected to match range of map");
|
1436
|
|
1437
|
|
1438
|
expression.SetType(lt);
|
1439
|
}
|
1440
|
|
1441
|
else if (lt.kind() == TypeKind.MapType)
|
1442
|
{
|
1443
|
domMap = (MapType)lt;
|
1444
|
rngMap = (MapType)rt;
|
1445
|
if (!Type.TypeEqual(domMap.fromType(), rngMap.fromType()) ||
|
1446
|
!Type.TypeEqual(domMap.toType(), rngMap.toType()))
|
1447
|
return Error(expression, "Maps need same domain and range types");
|
1448
|
|
1449
|
expression.SetType(domMap);
|
1450
|
}
|
1451
|
else
|
1452
|
return Error(expression, "Sequence Modification or Map override expects list or map as LHS");
|
1453
|
break;
|
1454
|
default:
|
1455
|
throw new NotImplementedException();
|
1456
|
}
|
1457
|
|
1458
|
|
1459
|
expression.SetLeftChild(lhs);
|
1460
|
expression.SetRightChild(rhs);
|
1461
|
|
1462
|
|
1463
|
if (m_matcherList.size() > 0)
|
1464
|
{
|
1465
|
m_matcherList.clear();
|
1466
|
return Error(expression, "Free variables in tuple constructor only allowed in expressions of the form 'atuple = ATupleConstructor(free1,free2...)'");
|
1467
|
}
|
1468
|
|
1469
|
|
1470
|
return ApplyConstantFolding(expression);
|
1471
|
}
|
1472
|
|
1473
|
|
1474
|
|
1475
|
|
1476
|
|
1477
|
|
1478
|
@SuppressWarnings("unchecked")
|
1479
|
private Expression ApplyConstantFolding(UnaryOperator expression)
|
1480
|
{
|
1481
|
final Expression child = expression.child();
|
1482
|
if (child.type().IsNumeric() && expression.kind() == ExpressionKind.Cast)
|
1483
|
{
|
1484
|
switch (expression.type().kind())
|
1485
|
{
|
1486
|
case FloatType:
|
1487
|
if (child.type().kind() == TypeKind.IntType && child.kind() == ExpressionKind.Value)
|
1488
|
{
|
1489
|
final Expression result = new ValueExpression<Double>((double)((ValueExpression<Integer>)child).value(), child.line(), child.pos(), Double.class);
|
1490
|
result.SetType(expression.type());
|
1491
|
return result;
|
1492
|
}
|
1493
|
break;
|
1494
|
default:
|
1495
|
break;
|
1496
|
}
|
1497
|
}
|
1498
|
return expression;
|
1499
|
}
|
1500
|
|
1501
|
@SuppressWarnings("unchecked")
|
1502
|
private Expression ApplyConstantFolding(BinaryOperator expression)
|
1503
|
{
|
1504
|
Expression lhs = expression.left();
|
1505
|
Expression rhs = expression.right();
|
1506
|
|
1507
|
if (lhs.kind() == ExpressionKind.Cast)
|
1508
|
{
|
1509
|
lhs = ApplyConstantFolding((UnaryOperator)lhs);
|
1510
|
expression.SetLeftChild(lhs);
|
1511
|
}
|
1512
|
if (rhs.kind() == ExpressionKind.Cast)
|
1513
|
{
|
1514
|
rhs = ApplyConstantFolding((UnaryOperator)rhs);
|
1515
|
expression.SetRightChild(rhs);
|
1516
|
}
|
1517
|
|
1518
|
|
1519
|
if (lhs.kind() == ExpressionKind.Value && rhs.kind() == ExpressionKind.Value)
|
1520
|
if (expression.type().kind() == TypeKind.FloatType)
|
1521
|
{
|
1522
|
final double fval1 = ((ValueExpression<Double>)lhs).value();
|
1523
|
final double fval2 = ((ValueExpression<Double>)rhs).value();
|
1524
|
double result = 0;
|
1525
|
switch (expression.kind())
|
1526
|
{
|
1527
|
|
1528
|
case sum:
|
1529
|
result = fval1 + fval2;
|
1530
|
break;
|
1531
|
case minus:
|
1532
|
result = fval1 - fval2;
|
1533
|
break;
|
1534
|
case prod:
|
1535
|
result = fval1 * fval2;
|
1536
|
break;
|
1537
|
case div:
|
1538
|
if (fval2 == 0)
|
1539
|
return Error(expression, "Division not defined");
|
1540
|
result = fval1 / fval2;
|
1541
|
break;
|
1542
|
default:
|
1543
|
|
1544
|
return expression;
|
1545
|
}
|
1546
|
if (result < ((FloatType)expression.type()).low()
|
1547
|
|| result > ((FloatType)expression.type()).high())
|
1548
|
return Error(expression, "Internal Error: value after constant folding not in float-range!");
|
1549
|
|
1550
|
final ValueExpression<Double> resexp = new ValueExpression<Double>(result, expression.line(), expression.pos(), Double.class);
|
1551
|
resexp.SetType(expression.type());
|
1552
|
return resexp;
|
1553
|
}
|
1554
|
else if (expression.type().kind() == TypeKind.IntType)
|
1555
|
{
|
1556
|
final int val1 = ((ValueExpression<Integer>)lhs).value();
|
1557
|
final int val2 = ((ValueExpression<Integer>)rhs).value();
|
1558
|
int result = 0;
|
1559
|
switch (expression.kind())
|
1560
|
{
|
1561
|
case sum:
|
1562
|
result = val1 + val2;
|
1563
|
break;
|
1564
|
case minus:
|
1565
|
result = val1 - val2;
|
1566
|
break;
|
1567
|
case prod:
|
1568
|
result = val1 * val2;
|
1569
|
break;
|
1570
|
case idiv:
|
1571
|
if (val2 == 0)
|
1572
|
return Error(expression, "Division not defined.");
|
1573
|
result = val1 / val2;
|
1574
|
break;
|
1575
|
case mod:
|
1576
|
result = val1 % val2;
|
1577
|
break;
|
1578
|
default:
|
1579
|
|
1580
|
return expression;
|
1581
|
}
|
1582
|
|
1583
|
if (result < ((IntType)expression.type()).rangeLow()
|
1584
|
|| result > ((IntType)expression.type()).rangeHigh())
|
1585
|
return Error(expression, "Internal Error: value after constant folding not in int-range!");
|
1586
|
|
1587
|
final ValueExpression<Integer> intres = new ValueExpression<Integer>(result, expression.line(), expression.pos(), Integer.class);
|
1588
|
intres.SetType(expression.type());
|
1589
|
return intres;
|
1590
|
}
|
1591
|
else if (expression.type().kind() == TypeKind.BoolType)
|
1592
|
{
|
1593
|
boolean result = false;
|
1594
|
switch (expression.kind())
|
1595
|
{
|
1596
|
case greater:
|
1597
|
assert(lhs.type().kind() == rhs.type().kind());
|
1598
|
switch (lhs.type().kind())
|
1599
|
{
|
1600
|
case IntType:
|
1601
|
result = ((ValueExpression<Integer>)lhs).value() >
|
1602
|
((ValueExpression<Integer>)rhs).value();
|
1603
|
break;
|
1604
|
case FloatType:
|
1605
|
result = ((ValueExpression<Double>)lhs).value() >
|
1606
|
((ValueExpression<Double>)rhs).value();
|
1607
|
break;
|
1608
|
default:
|
1609
|
return expression;
|
1610
|
}
|
1611
|
break;
|
1612
|
case greaterequal:
|
1613
|
assert(lhs.type().kind() == rhs.type().kind());
|
1614
|
switch (lhs.type().kind())
|
1615
|
{
|
1616
|
case IntType:
|
1617
|
result = ((ValueExpression<Integer>)lhs).value() >=
|
1618
|
((ValueExpression<Integer>)rhs).value();
|
1619
|
break;
|
1620
|
case FloatType:
|
1621
|
result = ((ValueExpression<Double>)lhs).value() >=
|
1622
|
((ValueExpression<Double>)rhs).value();
|
1623
|
break;
|
1624
|
default:
|
1625
|
return expression;
|
1626
|
}
|
1627
|
break;
|
1628
|
case less:
|
1629
|
assert(lhs.type().kind() == rhs.type().kind());
|
1630
|
switch (lhs.type().kind())
|
1631
|
{
|
1632
|
case IntType:
|
1633
|
result = ((ValueExpression<Integer>)lhs).value() <
|
1634
|
((ValueExpression<Integer>)rhs).value();
|
1635
|
break;
|
1636
|
case FloatType:
|
1637
|
result = ((ValueExpression<Double>)lhs).value() <
|
1638
|
((ValueExpression<Double>)rhs).value();
|
1639
|
break;
|
1640
|
default:
|
1641
|
return expression;
|
1642
|
}
|
1643
|
break;
|
1644
|
case lessequal:
|
1645
|
assert(lhs.type().kind() == rhs.type().kind());
|
1646
|
switch (lhs.type().kind())
|
1647
|
{
|
1648
|
case IntType:
|
1649
|
result = ((ValueExpression<Integer>)lhs).value() <=
|
1650
|
((ValueExpression<Integer>)rhs).value();
|
1651
|
break;
|
1652
|
case FloatType:
|
1653
|
result = ((ValueExpression<Double>)lhs).value() <=
|
1654
|
((ValueExpression<Double>)rhs).value();
|
1655
|
break;
|
1656
|
default:
|
1657
|
return expression;
|
1658
|
}
|
1659
|
break;
|
1660
|
case and:
|
1661
|
result = ((ValueExpression<Boolean>)lhs).value() && ((ValueExpression<Boolean>)rhs).value();
|
1662
|
break;
|
1663
|
case equal:
|
1664
|
|
1665
|
assert(lhs.type().kind() == rhs.type().kind());
|
1666
|
switch (lhs.type().kind())
|
1667
|
{
|
1668
|
case BoolType:
|
1669
|
result = ((ValueExpression<Boolean>)lhs).value() ==
|
1670
|
((ValueExpression<Boolean>)rhs).value();
|
1671
|
break;
|
1672
|
case IntType:
|
1673
|
result = ((ValueExpression<Integer>)lhs).value() ==
|
1674
|
((ValueExpression<Integer>)rhs).value();
|
1675
|
break;
|
1676
|
case FloatType:
|
1677
|
result = ((ValueExpression<Double>)lhs).value() ==
|
1678
|
((ValueExpression<Double>)rhs).value();
|
1679
|
break;
|
1680
|
default:
|
1681
|
return expression;
|
1682
|
}
|
1683
|
break;
|
1684
|
case biimplies:
|
1685
|
result = ((ValueExpression<Boolean>)lhs).value() == ((ValueExpression<Boolean>)rhs).value();
|
1686
|
break;
|
1687
|
case implies:
|
1688
|
result = !((ValueExpression<Boolean>)lhs).value() || ((ValueExpression<Boolean>)rhs).value();
|
1689
|
break;
|
1690
|
case or:
|
1691
|
result = ((ValueExpression<Boolean>)lhs).value() || ((ValueExpression<Boolean>)rhs).value();
|
1692
|
break;
|
1693
|
default:
|
1694
|
return expression;
|
1695
|
}
|
1696
|
final ValueExpression<Boolean> boolres = new ValueExpression<Boolean>(result, expression.line(), expression.pos(), Boolean.class);
|
1697
|
boolres.SetType(expression.type());
|
1698
|
return boolres;
|
1699
|
}
|
1700
|
|
1701
|
return expression;
|
1702
|
}
|
1703
|
|
1704
|
|
1705
|
|
1706
|
|
1707
|
|
1708
|
|
1709
|
@SuppressWarnings("unchecked")
|
1710
|
private Expression ResolveExpression(Expression expression)
|
1711
|
{
|
1712
|
if (expression == null) return null;
|
1713
|
|
1714
|
Expression result = expression;
|
1715
|
|
1716
|
switch (expression.kind())
|
1717
|
{
|
1718
|
case Value:
|
1719
|
final LeafExpression aValue = (LeafExpression)expression;
|
1720
|
switch (aValue.valueType())
|
1721
|
{
|
1722
|
case bool:
|
1723
|
expression.SetType(new BoolType(null));
|
1724
|
break;
|
1725
|
case chr:
|
1726
|
expression.SetType(new CharType(null));
|
1727
|
break;
|
1728
|
case complex:
|
1729
|
case identifier:
|
1730
|
assert(false);
|
1731
|
break;
|
1732
|
case integer:
|
1733
|
final int val = ((ValueExpression<Integer>)expression).value();
|
1734
|
expression.SetType(new IntType(val, val, null));
|
1735
|
break;
|
1736
|
case qval:
|
1737
|
throw new NotImplementedException();
|
1738
|
case real:
|
1739
|
final double fval = ((ValueExpression<Double>)expression).value();
|
1740
|
expression.SetType(new FloatType(fval, fval, fval, null));
|
1741
|
break;
|
1742
|
case reference:
|
1743
|
final Object aref = ((ValueExpression<?>)expression).value();
|
1744
|
if (aref == null)
|
1745
|
expression.SetType(new NullType());
|
1746
|
else
|
1747
|
{
|
1748
|
assert(false);
|
1749
|
return null;
|
1750
|
}
|
1751
|
break;
|
1752
|
case unset:
|
1753
|
throw new NotImplementedException();
|
1754
|
default:
|
1755
|
break;
|
1756
|
}
|
1757
|
result = expression;
|
1758
|
break;
|
1759
|
|
1760
|
|
1761
|
case conditional:
|
1762
|
case foldLR:
|
1763
|
case foldRL:
|
1764
|
result = ResolveExpression((TernaryOperator)expression);
|
1765
|
break;
|
1766
|
|
1767
|
|
1768
|
case forall:
|
1769
|
result = ResolveExpression((ForallQuantifier)expression);
|
1770
|
break;
|
1771
|
|
1772
|
|
1773
|
case exists:
|
1774
|
result = ResolveExpression((ExistsQuantifier)expression);
|
1775
|
break;
|
1776
|
|
1777
|
|
1778
|
case ListConstr:
|
1779
|
result = ResolveExpression((ListConstructor)expression);
|
1780
|
break;
|
1781
|
case SetConstr:
|
1782
|
result = ResolveExpression((SetConstructor)expression);
|
1783
|
break;
|
1784
|
case MapConstr:
|
1785
|
result = ResolveExpression((MapConstructor)expression);
|
1786
|
break;
|
1787
|
case TupleConstr:
|
1788
|
result = ResolveExpression((TupleConstructor)expression);
|
1789
|
break;
|
1790
|
case ObjectConstr:
|
1791
|
result = expression;
|
1792
|
break;
|
1793
|
|
1794
|
|
1795
|
case Identifier:
|
1796
|
result = ResolveExpression((IdentifierExpression)expression);
|
1797
|
break;
|
1798
|
case UnresolvedIdentifier:
|
1799
|
result = ResolveExpression((UnresolvedIdentifierExpression)expression);
|
1800
|
break;
|
1801
|
|
1802
|
|
1803
|
case TupleMapAccess:
|
1804
|
result = ResolveExpression((TupleMapAccessExpression)expression);
|
1805
|
break;
|
1806
|
case Call:
|
1807
|
result = ResolveExpression((CallExpression)expression);
|
1808
|
break;
|
1809
|
|
1810
|
|
1811
|
case Access:
|
1812
|
result = ResolveExpression((AccessExpression)expression);
|
1813
|
break;
|
1814
|
|
1815
|
|
1816
|
case Cast:
|
1817
|
final UnaryOperator cast = (UnaryOperator)expression;
|
1818
|
|
1819
|
|
1820
|
if (cast.type().kind() != TypeKind.OoActionSystemType)
|
1821
|
return Error(cast, String.format("Cast operator needs class type as argument. (Expected: OoActionSystemType, Found: %s)", cast.type().kind().name()));
|
1822
|
|
1823
|
cast.SetChild(ResolveExpression(cast.child()));
|
1824
|
final Type acover = Type.CoverType(cast.type(), cast.child().type());
|
1825
|
final boolean upcast = Type.TypeEqual(acover, cast.type());
|
1826
|
final boolean downcast = Type.TypeEqual(acover, cast.child().type());
|
1827
|
if (downcast)
|
1828
|
Info(cast, String.format("Potentially unsafe downcast: %s as %s (cover: %s)",
|
1829
|
cast.child().type().toString(), cast.type().toString(), acover.toString()));
|
1830
|
if (acover == null || !(upcast || downcast))
|
1831
|
return Error(cast, String.format("Invalid cast: %s as %s (cover: %s)",
|
1832
|
cast.child().type().toString(), cast.type().toString(), acover != null ? acover.toString() : "<none>"));
|
1833
|
|
1834
|
result = cast;
|
1835
|
break;
|
1836
|
|
1837
|
|
1838
|
case Primed:
|
1839
|
case unminus:
|
1840
|
case unplus:
|
1841
|
case not:
|
1842
|
case abs:
|
1843
|
case dom:
|
1844
|
case range:
|
1845
|
case merge:
|
1846
|
case card:
|
1847
|
case dconc:
|
1848
|
case dinter:
|
1849
|
case dunion:
|
1850
|
case elems:
|
1851
|
case head:
|
1852
|
case inds:
|
1853
|
case len:
|
1854
|
case tail:
|
1855
|
result = ResolveExpression((UnaryOperator)expression);
|
1856
|
break;
|
1857
|
|
1858
|
|
1859
|
case domresby:
|
1860
|
case domresto:
|
1861
|
case rngresby:
|
1862
|
case rngresto:
|
1863
|
case munion:
|
1864
|
case conc:
|
1865
|
case diff:
|
1866
|
case inter:
|
1867
|
case elemin:
|
1868
|
case notelemin:
|
1869
|
case subset:
|
1870
|
case union:
|
1871
|
case div:
|
1872
|
case greater:
|
1873
|
case greaterequal:
|
1874
|
case idiv:
|
1875
|
case less:
|
1876
|
case lessequal:
|
1877
|
case minus:
|
1878
|
case mod:
|
1879
|
case pow:
|
1880
|
case prod:
|
1881
|
case sum:
|
1882
|
case and:
|
1883
|
case biimplies:
|
1884
|
case implies:
|
1885
|
case or:
|
1886
|
case equal:
|
1887
|
case notequal:
|
1888
|
case seqmod_mapoverride:
|
1889
|
result = ResolveExpression((BinaryOperator)expression);
|
1890
|
break;
|
1891
|
default:
|
1892
|
throw new NotImplementedException();
|
1893
|
}
|
1894
|
|
1895
|
return result;
|
1896
|
}
|
1897
|
|
1898
|
|
1899
|
public Expression ResolveExpressionNewScope(Expression toResolve)
|
1900
|
{
|
1901
|
Expression result = null;
|
1902
|
|
1903
|
m_freeVariables.push(new SymbolTable());
|
1904
|
try
|
1905
|
{
|
1906
|
result = ResolveExpression(toResolve);
|
1907
|
}
|
1908
|
finally
|
1909
|
{
|
1910
|
if (result != null)
|
1911
|
result.SetFreeVariables(m_freeVariables.pop());
|
1912
|
}
|
1913
|
return result;
|
1914
|
}
|
1915
|
|
1916
|
|
1917
|
|
1918
|
|
1919
|
|
1920
|
|
1921
|
@Override
|
1922
|
protected void VisitAstElement(IAst subElement, IAst parent)
|
1923
|
{
|
1924
|
if (subElement.nodeType() == AstNodeTypeEnum.expression)
|
1925
|
{
|
1926
|
|
1927
|
m_freeVariables.push(new SymbolTable());
|
1928
|
|
1929
|
m_entryExpression = (Expression)subElement;
|
1930
|
|
1931
|
final Expression newExpression = ResolveExpression(m_entryExpression);
|
1932
|
|
1933
|
if (newExpression != null)
|
1934
|
{
|
1935
|
newExpression.SetFreeVariables(m_freeVariables.pop());
|
1936
|
ReplaceExpression(parent, (Expression)subElement, newExpression);
|
1937
|
}
|
1938
|
|
1939
|
}
|
1940
|
else
|
1941
|
subElement.Accept(this);
|
1942
|
}
|
1943
|
|
1944
|
|
1945
|
|
1946
|
|
1947
|
|
1948
|
|
1949
|
public OoaResolveExpressionsVisitor(ParserState aState)
|
1950
|
{
|
1951
|
super (aState);
|
1952
|
if (aState == null)
|
1953
|
throw new ArgumentException();
|
1954
|
}
|
1955
|
}
|