LALR(1) GRAMMAR

Problem #2: Modifiers Too Specific

19.1.2

ClassType:

ClassOrInterfaceType

InterfaceType:

ClassOrInterfaceType

19.1.2   Problem #2: Modifiers Too Specific

Consider the two groups of productions:

FieldDeclaration:

FieldModifiers

opt

Type VariableDeclarators

 ;

FieldModifiers:

FieldModifier

FieldModifiers FieldModifier

FieldModifier: one of

public

protected

private

final static transient volatile

and:

MethodHeader:

MethodModifiers

opt

ResultType MethodDeclarator Throws

opt

MethodModifiers:

MethodModifier

MethodModifiers MethodModifier

MethodModifier: one of

public

protected

private

static

abstract final native synchronized

Now consider the partial input:

class Problem2 { public static int

When the parser is considering the token

static

, with one token lookahead to

symbol

int

 or, worse yet, considering the token

public

 with lookahead to

static

 it cannot yet tell whether this will be a field declaration such as:

public static int maddie = 0;

or a method declaration such as:

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