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java.lang.Objectorg.apache.xalan.xsltc.compiler.SyntaxTreeNode
org.apache.xalan.xsltc.compiler.Pattern
org.apache.xalan.xsltc.compiler.LocationPathPattern
public abstract class LocationPathPattern
Nested Class Summary |
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Nested classes/interfaces inherited from interface org.apache.bcel.generic.InstructionConstants |
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org.apache.bcel.generic.InstructionConstants.Clinit |
Field Summary |
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Fields inherited from interface org.apache.bcel.generic.InstructionConstants |
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AALOAD, AASTORE, ACONST_NULL, ALOAD_0, ALOAD_1, ALOAD_2, ARETURN, ARRAYLENGTH, ASTORE_0, ASTORE_1, ASTORE_2, ATHROW, BALOAD, BASTORE, bla, CALOAD, CASTORE, D2F, D2I, D2L, DADD, DALOAD, DASTORE, DCMPG, DCMPL, DCONST_0, DCONST_1, DDIV, DMUL, DNEG, DREM, DRETURN, DSUB, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, F2D, F2I, F2L, FADD, FALOAD, FASTORE, FCMPG, FCMPL, FCONST_0, FCONST_1, FCONST_2, FDIV, FMUL, FNEG, FREM, FRETURN, FSUB, I2B, I2C, I2D, I2F, I2L, I2S, IADD, IALOAD, IAND, IASTORE, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, ICONST_M1, IDIV, ILOAD_0, ILOAD_1, ILOAD_2, IMUL, INEG, INSTRUCTIONS, IOR, IREM, IRETURN, ISHL, ISHR, ISTORE_0, ISTORE_1, ISTORE_2, ISUB, IUSHR, IXOR, L2D, L2F, L2I, LADD, LALOAD, LAND, LASTORE, LCMP, LCONST_0, LCONST_1, LDIV, LMUL, LNEG, LOR, LREM, LRETURN, LSHL, LSHR, LSUB, LUSHR, LXOR, MONITORENTER, MONITOREXIT, NOP, POP, POP2, RETURN, SALOAD, SASTORE, SWAP, THIS |
Constructor Summary | |
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LocationPathPattern()
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Method Summary | |
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void |
backPatchFalseList(org.apache.bcel.generic.InstructionHandle ih)
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void |
backPatchTrueList(org.apache.bcel.generic.InstructionHandle ih)
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org.apache.bcel.generic.InstructionList |
compile(ClassGenerator classGen,
MethodGenerator methodGen)
Translate this node into a fresh instruction list. |
void |
desynthesize(ClassGenerator classGen,
MethodGenerator methodGen)
|
java.lang.Object |
evaluateAtCompileTime()
Returns an object representing the compile-time evaluation of an expression. |
int |
getAxis()
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double |
getDefaultPriority()
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FlowList |
getFalseList()
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abstract org.apache.xalan.xsltc.compiler.StepPattern |
getKernelPattern()
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double |
getPriority()
Returns the priority of this pattern (section 5.5 in the XSLT spec). |
Template |
getTemplate()
Get the Template node that represents the |
FlowList |
getTrueList()
|
Type |
getType()
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boolean |
hasLastCall()
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boolean |
hasPositionCall()
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abstract boolean |
isWildcard()
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MethodType |
lookupPrimop(org.apache.xalan.xsltc.compiler.SymbolTable stable,
java.lang.String op,
MethodType ctype)
Search for a primop in the symbol table that matches the method type ctype . |
boolean |
noSmallerThan(LocationPathPattern other)
This method is used by the Mode class to prioritise patterns and template. |
abstract void |
reduceKernelPattern()
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void |
setTemplate(Template template)
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void |
startIterator(ClassGenerator classGen,
MethodGenerator methodGen)
If this expression is of type node-set and it is not a variable reference, then call setStartNode() passing the context node. |
void |
synthesize(ClassGenerator classGen,
MethodGenerator methodGen)
Synthesize a boolean expression, i.e., either push a 0 or 1 onto the operand stack for the next statement to succeed. |
java.lang.String |
toString()
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void |
translate(ClassGenerator classGen,
MethodGenerator methodGen)
Translate this node into JVM bytecodes. |
void |
translateDesynthesized(ClassGenerator classGen,
MethodGenerator methodGen)
Redefined by expressions of type boolean that use flow lists. |
Type |
typeCheck(org.apache.xalan.xsltc.compiler.SymbolTable stable)
Returns the type of a pattern, which is always a NodeType . |
Methods inherited from class org.apache.xalan.xsltc.compiler.SyntaxTreeNode |
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display, getLineNumber, getParser, getStylesheet, parseContents |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public LocationPathPattern()
Method Detail |
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public Type typeCheck(org.apache.xalan.xsltc.compiler.SymbolTable stable) throws TypeCheckError
Pattern
NodeType
.
A NodeType
has a number of subtypes defined by
NodeType._type
corresponding to each type of node.
typeCheck
in class Pattern
stable
- The compiler/parser's symbol table
TypeCheckError
public void translate(ClassGenerator classGen, MethodGenerator methodGen)
Pattern
translate
on a pattern, make sure that the node being
matched is on top of the stack. After calling translate
,
make sure to backpatch both true and false lists. True lists are the
default, in the sense that they always "fall through". If this
is not the intended semantics (e.g., see
AlternativePattern.translate(org.apache.xalan.xsltc.compiler.util.ClassGenerator, org.apache.xalan.xsltc.compiler.util.MethodGenerator)
)
then a GOTO must be appended to the instruction list after calling
translate
.
translate
in class Pattern
classGen
- BCEL Java class generatormethodGen
- BCEL Java method generatorpublic void setTemplate(Template template)
public Template getTemplate()
SyntaxTreeNode
public final double getPriority()
Pattern
getPriority
in class Pattern
public double getDefaultPriority()
public boolean noSmallerThan(LocationPathPattern other)
public abstract org.apache.xalan.xsltc.compiler.StepPattern getKernelPattern()
public abstract void reduceKernelPattern()
public abstract boolean isWildcard()
public int getAxis()
public java.lang.String toString()
public Type getType()
public boolean hasPositionCall()
public boolean hasLastCall()
public java.lang.Object evaluateAtCompileTime()
public final org.apache.bcel.generic.InstructionList compile(ClassGenerator classGen, MethodGenerator methodGen)
public void translateDesynthesized(ClassGenerator classGen, MethodGenerator methodGen)
public void startIterator(ClassGenerator classGen, MethodGenerator methodGen)
public void synthesize(ClassGenerator classGen, MethodGenerator methodGen)
public void desynthesize(ClassGenerator classGen, MethodGenerator methodGen)
public FlowList getFalseList()
public FlowList getTrueList()
public void backPatchFalseList(org.apache.bcel.generic.InstructionHandle ih)
public void backPatchTrueList(org.apache.bcel.generic.InstructionHandle ih)
public MethodType lookupPrimop(org.apache.xalan.xsltc.compiler.SymbolTable stable, java.lang.String op, MethodType ctype)
ctype
. Two methods match if they have the same arity.
If a primop is overloaded then the "closest match" is returned. The
first entry in the vector of primops that has the right arity is
considered to be the default one.
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