polyglot.parse
Class BaseParser

java.lang.Object
  java_cup.runtime.lr_parser
      polyglot.parse.BaseParser

Direct Known Subclasses:

Grm

public abstract class BaseParser
extends java_cup.runtime.lr_parser

Field Summary

ErrorQueue	eq
Lexer	lexer
NodeFactory	nf
protected Position	position
protected Position	prev_pos
TypeSystem	ts

Fields inherited from class java_cup.runtime.lr_parser

_done_parsing, _error_sync_size, action_tab, cur_token, lookahead, lookahead_pos, production_tab, reduce_tab, stack, tos

Constructor Summary

BaseParser(Lexer l, TypeSystem t, NodeFactory n, ErrorQueue q)

Method Summary

TypeNode	array(TypeNode n, int dims) Return a TypeNode representing a dims-dimensional array of n.
void	die() Report a fatal error then abort parsing.
void	die(Position pos) Report a fatal error then abort parsing.
void	die(java.lang.String msg, Position pos) Report a fatal error then abort parsing.
protected QualifierNode	exprToQualifier(Expr e) Helper for exprToType.
TypeNode	exprToType(Expr e) Convert e into a type, yielding a TypeNode.
java_cup.runtime.Symbol	nextSymbol() The standard scanning routine for use in the CUP "scan with" declaration.
Position	pos(java.util.List l) Return the source position of the first element in the list to the last element in the list.
Position	pos(Node n) Return the source position of the Node.
Position	pos(java.lang.Object first, java.lang.Object last)
Position	pos(java.lang.Object first, java.lang.Object last, java.lang.Object noEndDefault)
Position	pos(Token t) Return the position of the Token.
Position	pos(Type n) Return the source position of the Type.
Position	pos(VarDeclarator n) Return the source position of the declaration.
protected Position	posForObject(java.lang.Object o)
Position	position()
protected QualifierNode	prefixToQualifier(Prefix p) Helper for exprToType.
void	report_fatal_error(java.lang.String message, java.lang.Object info) Override the default CUP routine.
protected QualifierNode	typeToQualifier(TypeNode t) Helper for exprToType.

Methods inherited from class java_cup.runtime.lr_parser

action_table, advance_lookahead, cur_err_token, debug_message, debug_parse, debug_reduce, debug_shift, debug_stack, do_action, done_parsing, dump_stack, EOF_sym, error_recovery, error_sym, error_sync_size, find_recovery_config, get_action, get_reduce, getScanner, init_actions, parse_lookahead, parse, production_table, read_lookahead, reduce_table, report_error, restart_lookahead, scan, setScanner, shift_under_error, start_production, start_state, syntax_error, try_parse_ahead, unpackFromStrings, unrecovered_syntax_error, user_init

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

lexer

public final Lexer lexer

eq

public final ErrorQueue eq

ts

public final TypeSystem ts

nf

public final NodeFactory nf

prev_pos

protected Position prev_pos

position

protected Position position

Constructor Detail

BaseParser

public BaseParser(Lexer l,
                  TypeSystem t,
                  NodeFactory n,
                  ErrorQueue q)

Method Detail

nextSymbol

public java_cup.runtime.Symbol nextSymbol()
                                   throws java.io.IOException

The standard scanning routine for use in the CUP "scan with" declaration. Should read: scan with {: return nextSymbol(); :}

Throws:

java.io.IOException

position

public Position position()

report_fatal_error

public void report_fatal_error(java.lang.String message,
                               java.lang.Object info)
                        throws java.lang.Exception

Override the default CUP routine.

Overrides:

report_fatal_error in class java_cup.runtime.lr_parser

Parameters:

message - an error message.

info - an extra object reserved for use by specialized subclasses.

Throws:

java.lang.Exception

die

public void die(java.lang.String msg,
                Position pos)
         throws java.lang.Exception

Report a fatal error then abort parsing.

Throws:

java.lang.Exception

die

public void die(Position pos)
         throws java.lang.Exception

Report a fatal error then abort parsing.

Throws:

java.lang.Exception

die

public void die()
         throws java.lang.Exception

Report a fatal error then abort parsing.

Throws:

java.lang.Exception

posForObject

protected Position posForObject(java.lang.Object o)

pos

public Position pos(java.lang.Object first,
                    java.lang.Object last)

pos

public Position pos(java.lang.Object first,
                    java.lang.Object last,
                    java.lang.Object noEndDefault)

pos

public Position pos(Token t)

Return the position of the Token.

pos

public Position pos(Type n)

Return the source position of the Type.

pos

public Position pos(java.util.List l)

Return the source position of the first element in the list to the last element in the list.

pos

public Position pos(VarDeclarator n)

Return the source position of the declaration.

pos

public Position pos(Node n)

Return the source position of the Node.

array

public TypeNode array(TypeNode n,
                      int dims)
               throws java.lang.Exception

Return a TypeNode representing a dims-dimensional array of n.

Throws:

java.lang.Exception

prefixToQualifier

protected QualifierNode prefixToQualifier(Prefix p)
                                   throws java.lang.Exception

Helper for exprToType.

Throws:

java.lang.Exception

typeToQualifier

protected QualifierNode typeToQualifier(TypeNode t)
                                 throws java.lang.Exception

Helper for exprToType.

Throws:

java.lang.Exception

exprToQualifier

protected QualifierNode exprToQualifier(Expr e)
                                 throws java.lang.Exception

Helper for exprToType.

Throws:

java.lang.Exception

exprToType

public TypeNode exprToType(Expr e)
                    throws java.lang.Exception

Convert e into a type, yielding a TypeNode. This is used by the cast_expression production.

Throws:

java.lang.Exception