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java.lang.Object avrora.core.isdl.ast.Expr avrora.core.isdl.ast.ConversionExpr
The MapExpr
class represents an expression that is an access of an element within a map.
Field Summary | |
Expr |
expr
The expr field stores a references to the expression which is evaluated to yield the expr
into the map. |
Token |
typename
The typename field stores a reference to the name of the map whose element is being
accessed. |
Fields inherited from class avrora.core.isdl.ast.Expr |
PREC_A_ADD, PREC_A_AND, PREC_A_MUL, PREC_A_OR, PREC_A_SHIFT, PREC_A_XOR, PREC_L_AND, PREC_L_EQU, PREC_L_OR, PREC_L_REL, PREC_L_XOR, PREC_TERM, PREC_UN |
Constructor Summary | |
ConversionExpr(Expr i,
java.lang.String s)
The constructor of the MapExpr class initializes the publicly accessable fields that
represent the members of this expression |
|
ConversionExpr(Expr i,
Token s)
The constructor of the MapExpr class initializes the publicly accessable fields that
represent the members of this expression |
Method Summary | |
Expr |
accept(CodeRebuilder r,
java.lang.Object env)
The accept() method implements one half of the visitor pattern for rebuilding of
expressions. |
void |
accept(CodeVisitor v)
The accept() method implements one half of the visitor pattern so that client visitors can
traverse the syntax tree easily and in an extensible way. |
void |
accept(ExprVisitor v)
The accept() method implements one half of the visitor pattern so that client visitors can
traverse the syntax tree easily and in an extensible way. |
int |
getPrecedence()
The getPrecedence() method gets the binding precedence for this expression. |
boolean |
isMap()
The isMap() method tests whether this expression is a reference to an element of a map.
|
java.lang.String |
toString()
The toString() method recursively converts this expression to a string. |
Methods inherited from class avrora.core.isdl.ast.Expr |
getBitWidth, innerString, isBitRangeExpr, isConstantExpr, isLiteral, isVariable, tokenToBool, tokenToInt |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
public final Token typename
typename
field stores a reference to the name of the map whose element is being
accessed.
public final Expr expr
expr
field stores a references to the expression which is evaluated to yield the expr
into the map.
Constructor Detail |
public ConversionExpr(Expr i, Token s)
MapExpr
class initializes the publicly accessable fields that
represent the members of this expression
s
- the string name of the map as a tokeni
- an expression representing the expr into the mappublic ConversionExpr(Expr i, java.lang.String s)
MapExpr
class initializes the publicly accessable fields that
represent the members of this expression
s
- the string name of the map as a tokeni
- an expression representing the expr into the mapMethod Detail |
public void accept(ExprVisitor v)
accept()
method implements one half of the visitor pattern so that client visitors can
traverse the syntax tree easily and in an extensible way.
accept
in class Expr
v
- the visitor to acceptpublic void accept(CodeVisitor v)
accept()
method implements one half of the visitor pattern so that client visitors can
traverse the syntax tree easily and in an extensible way.
accept
in class Expr
v
- the visitor to acceptpublic Expr accept(CodeRebuilder r, java.lang.Object env)
accept()
method implements one half of the visitor pattern for rebuilding of
expressions. This visitor allows code to be slightly modified while only writing visit methods for the
parts of the syntax tree affected.
accept
in class Expr
r
- the rebuilder to accept
visit()
method of the rebuilderpublic java.lang.String toString()
toString()
method recursively converts this expression to a string. For binary
operations, inner expressions will be nested within parentheses if their precedence is lower than the
precedence of the parent expression.
public int getPrecedence()
getPrecedence()
method gets the binding precedence for this expression. This is used
to compute when inner expressions must be nested within parentheses in order to preserve the implied
order of evaluation.
getPrecedence
in class Expr
public boolean isMap()
isMap()
method tests whether this expression is a reference to an element of a map.
This is used in pattern matching in some parts of the tools that work on abstract syntax trees. For
instances of MapExpr
, this method returns always true.
isMap
in class Expr
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