Initial commit, Parser and abstract syntax tree skeleton done.

This commit is contained in:
Jonathan Bernard 2009-11-18 20:00:29 -06:00
commit 577ffcdcb3
19 changed files with 1876 additions and 0 deletions

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.hgignore Normal file
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build/
.*swp
.*swo

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<?xml version="1.0" encoding="UTF-8"?>
<project name="Common Build Versioning" >
<property name="cbv-basedir" value="nbproject" />
<target name="-cbv-init">
<property file="${cbv-basedir}/project.versioning.properties" />
</target>
<target name="-pre-set-version" />
<target name="-do-set-version">
<input message="Current version is ${application.version}. Enter new version: " addproperty="new-version"/>
<propertyfile file="${cbv-basedir}/project.versioning.properties">
<entry key="application.version" value="${new-version}" />
<entry key="build.number" value="0" />
</propertyfile>
<property file="${cbv-basedir}/project.versioning.properties" />
</target>
<target name="-post-set-version" />
<target name="set-version" depends="-cbv-init,-pre-set-version,-do-set-version,-post-set-version"/>
<target name="increment-build-number">
<propertyfile file="${cbv-basedir}/project.versioning.properties">
<entry key="build.number" operation="+" type="int" default="0"/>
</propertyfile>
<property file="${cbv-basedir}/project.versioning.properties" />
</target>
</project>

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build.xml Normal file
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<project name="Gammon-Bernard Common Lisp" default="dist" basedir=".">
<property file="project.properties"/>
<import file="build-common-versioning.xml"/>
<!-- This path represents all compile-time dependancies -->
<path id="javac.path">
<fileset dir="${lib.dir}">
<include name="**/*.jar"/>
</fileset>
</path>
<!-- This path represents all run-time dependancies -->
<path id="java.path">
<path refid="javac.path"/>
<pathelement path="${build.dir}"/>
</path>
<target name="init">
<tstamp/>
</target>
<target name="clean" depends="init">
<delete dir="${build.dir}"/>
<delete dir="${grammar.output.dir}"/>
<delete dir="${dist.dir}"/>
</target>
<target name="compile-parser" depends="init">
<mkdir dir="${grammar.output.dir}"/>
<javacc
target="${grammar.file}"
javacchome="/usr/share/java"
outputdirectory="${grammar.output.dir}"/>
</target>
<target name="compile" depends="compile-parser">
<!-- Make build directory if it does not exist -->
<mkdir dir="${build.dir}"/>
<!-- Compile all sources to build directory -->
<javac
srcdir="${src.dir}"
destdir="${build.dir}"
classpathref="javac.path"/>
</target>
<target name="dist" depends="init,compile"/>
</project>

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project.properties Normal file
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src.dir=src
build.dir=build
dist.dir=dist
lib.dir=lib
grammar.file=${src.dir}/edu/utexas/cs345/jdblisp/Parser.jj
grammar.output.dir=${src.dir}/edu/utexas/cs345/jdblisp/parser

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package edu.utexas.cs345.jdblisp;
/**
* @author Jonathan Bernard (jdbernard@gmail.com)
*/
public class Lisp {
public static void main(String[] args) {
}
}

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/**
* Grammer and parser definition for JDB-Lisp
*/
options {
JDK_VERSION = "1.5";
}
PARSER_BEGIN(Parser)
package edu.utexas.cs345.jdblisp.parser;
import edu.utexas.cs345.jdblisp.data.*;
public class Parser {
}
PARSER_END(Parser)
SKIP : /* WHITE SPACE */
{ " "
| "\r"
| "\t"
| "\n"
| "\n\r"
}
TOKEN : /* PUNCTUATION */
{ < LPAREN: "(" >
| < RPAREN: ")" >
}
TOKEN : /* LITERALS & SYMBOLS */
{ < NUMB: (["+", "-"])? (["0"-"9"])+ ("." (["0"-"9"])+ )? >
| < STRG: "\"" (["A"-"Z", "a"-"z", "_"])* "\"" >
| < SYMB: ([ "A"-"Z",
"a"-"z",
"_",
"+", "-", "*", "/", "="])+ >
}
/**
* SExp -> Symbol | Str | Num | List | "'" SExp
*/
SExp sexp():
{ SExp s = null; Token t;
}
{ t = <SYMB> { return new Symbol(t); }
| t = <STRG> { return new Str(t); }
| t = <NUMB> { return new Num(t); }
| s = list() { return s; }
}
/**
* List -> "(" Seq ")"
*/
List list():
{ Seq s;
}
{ <LPAREN> s = seq() <RPAREN> { return (s == null) ? null : new List(s); }
}
/**
* Seq -> null | SExp Seq
*/
Seq seq():
{ Seq sq; SExp se;
}
{ [ se = sexp() sq = seq() { return new Seq(se, sq); } ]
{ return null; }
}

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package edu.utexas.cs345.jdblisp.data;
/**
* @author Jonathan Bernard (jdbernard@gmail.com)
*/
public class List implements SExp {
public final Seq<SExp> seq;
public List(Seq<SExp> seq) {
this.seq = seq;
}
public SExp eval(SExp sexp, SymbolTable table) {
// TODO
return null;
}
}

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package edu.utexas.cs345.jdblisp.data;
/**
* @author Jonathan Bernard (jdbernard@gmail.com)
*/
public class Num implements SExp {
public Num(String n) {
// TODO
}
public SExp eval(SExp sexp, SymbolTable table) {
// TODO
return null;
}
}

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package edu.utexas.cs345.jdblisp.data;
/**
* SExp
* @author Jonathan Bernard (jdbernard@gmail.com)
*/
public interface SExp {
SymbolTable eval(SExp sexp, SymbolTable table);
}

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package edu.utexas.cs345.jdblisp.data;
/**
* Seq
* @author Jonathan Bernard (jdbernard@gmail.com)
*/
public class Seq<T extends SExp> implements SExp {
public final T car;
public final Seq<T> cdr;
public Seq(T car, Seq<T> cdr) {
this.car = car;
this.cdr = cdr;
}
public Seq(T... elements) {
int idx = elements.length;
Seq last = null;
while (idx > 1) last = new Seq(elements[--idx], last);
this.car = elements[0];
this.cdr = last;
}
public SExp eval(SExp sexp, SymbolTable table) {
// TODO
return null;
}
}

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package edu.utexas.cs345.jdblisp.data;
/**
* @author Jonathan Bernard (jdbernard@gmail.com)
*/
public class Str implements SExp {
public SExp eval(SExp sexp, SymbolTable table) {
// TODO
return null;
}
}

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package edu.utexas.cs345.jdblisp.data;
/**
* @author Jonathan Bernard (jdbernard@gmail.com)
*/
public class Symbol implements SExp {
public final String name;
public Symbol(String name) {
this.name = name;
}
public SExp eval(SExp sexp, SymbolTable table) {
// TODO
return null;
}
}

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/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 4.1 */
/* JavaCCOptions:KEEP_LINE_COL=null */
package edu.utexas.cs345.jdblisp.parser;
/**
* This exception is thrown when parse errors are encountered.
* You can explicitly create objects of this exception type by
* calling the method generateParseException in the generated
* parser.
*
* You can modify this class to customize your error reporting
* mechanisms so long as you retain the public fields.
*/
public class ParseException extends Exception {
/**
* This constructor is used by the method "generateParseException"
* in the generated parser. Calling this constructor generates
* a new object of this type with the fields "currentToken",
* "expectedTokenSequences", and "tokenImage" set. The boolean
* flag "specialConstructor" is also set to true to indicate that
* this constructor was used to create this object.
* This constructor calls its super class with the empty string
* to force the "toString" method of parent class "Throwable" to
* print the error message in the form:
* ParseException: <result of getMessage>
*/
public ParseException(Token currentTokenVal,
int[][] expectedTokenSequencesVal,
String[] tokenImageVal
)
{
super("");
specialConstructor = true;
currentToken = currentTokenVal;
expectedTokenSequences = expectedTokenSequencesVal;
tokenImage = tokenImageVal;
}
/**
* The following constructors are for use by you for whatever
* purpose you can think of. Constructing the exception in this
* manner makes the exception behave in the normal way - i.e., as
* documented in the class "Throwable". The fields "errorToken",
* "expectedTokenSequences", and "tokenImage" do not contain
* relevant information. The JavaCC generated code does not use
* these constructors.
*/
public ParseException() {
super();
specialConstructor = false;
}
/** Constructor with message. */
public ParseException(String message) {
super(message);
specialConstructor = false;
}
/**
* This variable determines which constructor was used to create
* this object and thereby affects the semantics of the
* "getMessage" method (see below).
*/
protected boolean specialConstructor;
/**
* This is the last token that has been consumed successfully. If
* this object has been created due to a parse error, the token
* followng this token will (therefore) be the first error token.
*/
public Token currentToken;
/**
* Each entry in this array is an array of integers. Each array
* of integers represents a sequence of tokens (by their ordinal
* values) that is expected at this point of the parse.
*/
public int[][] expectedTokenSequences;
/**
* This is a reference to the "tokenImage" array of the generated
* parser within which the parse error occurred. This array is
* defined in the generated ...Constants interface.
*/
public String[] tokenImage;
/**
* This method has the standard behavior when this object has been
* created using the standard constructors. Otherwise, it uses
* "currentToken" and "expectedTokenSequences" to generate a parse
* error message and returns it. If this object has been created
* due to a parse error, and you do not catch it (it gets thrown
* from the parser), then this method is called during the printing
* of the final stack trace, and hence the correct error message
* gets displayed.
*/
public String getMessage() {
if (!specialConstructor) {
return super.getMessage();
}
StringBuffer expected = new StringBuffer();
int maxSize = 0;
for (int i = 0; i < expectedTokenSequences.length; i++) {
if (maxSize < expectedTokenSequences[i].length) {
maxSize = expectedTokenSequences[i].length;
}
for (int j = 0; j < expectedTokenSequences[i].length; j++) {
expected.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');
}
if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {
expected.append("...");
}
expected.append(eol).append(" ");
}
String retval = "Encountered \"";
Token tok = currentToken.next;
for (int i = 0; i < maxSize; i++) {
if (i != 0) retval += " ";
if (tok.kind == 0) {
retval += tokenImage[0];
break;
}
retval += " " + tokenImage[tok.kind];
retval += " \"";
retval += add_escapes(tok.image);
retval += " \"";
tok = tok.next;
}
retval += "\" at line " + currentToken.next.beginLine + ", column " + currentToken.next.beginColumn;
retval += "." + eol;
if (expectedTokenSequences.length == 1) {
retval += "Was expecting:" + eol + " ";
} else {
retval += "Was expecting one of:" + eol + " ";
}
retval += expected.toString();
return retval;
}
/**
* The end of line string for this machine.
*/
protected String eol = System.getProperty("line.separator", "\n");
/**
* Used to convert raw characters to their escaped version
* when these raw version cannot be used as part of an ASCII
* string literal.
*/
protected String add_escapes(String str) {
StringBuffer retval = new StringBuffer();
char ch;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i))
{
case 0 :
continue;
case '\b':
retval.append("\\b");
continue;
case '\t':
retval.append("\\t");
continue;
case '\n':
retval.append("\\n");
continue;
case '\f':
retval.append("\\f");
continue;
case '\r':
retval.append("\\r");
continue;
case '\"':
retval.append("\\\"");
continue;
case '\'':
retval.append("\\\'");
continue;
case '\\':
retval.append("\\\\");
continue;
default:
if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
String s = "0000" + Integer.toString(ch, 16);
retval.append("\\u" + s.substring(s.length() - 4, s.length()));
} else {
retval.append(ch);
}
continue;
}
}
return retval.toString();
}
}
/* JavaCC - OriginalChecksum=6424bd83be8a27da5fcf7238642002f6 (do not edit this line) */

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/* Generated By:JavaCC: Do not edit this line. Parser.java */
package edu.utexas.cs345.jdblisp.parser;
import edu.utexas.cs345.jdblisp.data.*;
public class Parser implements ParserConstants {
/**
* SExp -> Symbol | Str | Num | List | "'" SExp
*/
static final public SExp sexp() throws ParseException {
SExp s = null; Token t;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case SYMB:
t = jj_consume_token(SYMB);
{if (true) return new Symbol(t);}
break;
case STRG:
t = jj_consume_token(STRG);
{if (true) return new Str(t);}
break;
case NUMB:
t = jj_consume_token(NUMB);
{if (true) return new Num(t);}
break;
case LPAREN:
s = list();
{if (true) return s;}
break;
default:
jj_la1[0] = jj_gen;
jj_consume_token(-1);
throw new ParseException();
}
throw new Error("Missing return statement in function");
}
/**
* List -> "(" Seq ")"
*/
static final public List list() throws ParseException {
Seq s;
jj_consume_token(LPAREN);
s = seq();
jj_consume_token(RPAREN);
{if (true) return (s == null) ? null : new List(s);}
throw new Error("Missing return statement in function");
}
/**
* Seq -> null | SExp Seq
*/
static final public Seq seq() throws ParseException {
Seq sq; SExp se;
switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
case LPAREN:
case NUMB:
case STRG:
case SYMB:
se = sexp();
sq = seq();
{if (true) return new Seq(se, sq);}
break;
default:
jj_la1[1] = jj_gen;
;
}
{if (true) return null;}
throw new Error("Missing return statement in function");
}
static private boolean jj_initialized_once = false;
/** Generated Token Manager. */
static public ParserTokenManager token_source;
static SimpleCharStream jj_input_stream;
/** Current token. */
static public Token token;
/** Next token. */
static public Token jj_nt;
static private int jj_ntk;
static private int jj_gen;
static final private int[] jj_la1 = new int[2];
static private int[] jj_la1_0;
static {
jj_la1_init_0();
}
private static void jj_la1_init_0() {
jj_la1_0 = new int[] {0x740,0x740,};
}
/** Constructor with InputStream. */
public Parser(java.io.InputStream stream) {
this(stream, null);
}
/** Constructor with InputStream and supplied encoding */
public Parser(java.io.InputStream stream, String encoding) {
if (jj_initialized_once) {
System.out.println("ERROR: Second call to constructor of static parser. ");
System.out.println(" You must either use ReInit() or set the JavaCC option STATIC to false");
System.out.println(" during parser generation.");
throw new Error();
}
jj_initialized_once = true;
try { jj_input_stream = new SimpleCharStream(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source = new ParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 2; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
static public void ReInit(java.io.InputStream stream) {
ReInit(stream, null);
}
/** Reinitialise. */
static public void ReInit(java.io.InputStream stream, String encoding) {
try { jj_input_stream.ReInit(stream, encoding, 1, 1); } catch(java.io.UnsupportedEncodingException e) { throw new RuntimeException(e); }
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 2; i++) jj_la1[i] = -1;
}
/** Constructor. */
public Parser(java.io.Reader stream) {
if (jj_initialized_once) {
System.out.println("ERROR: Second call to constructor of static parser. ");
System.out.println(" You must either use ReInit() or set the JavaCC option STATIC to false");
System.out.println(" during parser generation.");
throw new Error();
}
jj_initialized_once = true;
jj_input_stream = new SimpleCharStream(stream, 1, 1);
token_source = new ParserTokenManager(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 2; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
static public void ReInit(java.io.Reader stream) {
jj_input_stream.ReInit(stream, 1, 1);
token_source.ReInit(jj_input_stream);
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 2; i++) jj_la1[i] = -1;
}
/** Constructor with generated Token Manager. */
public Parser(ParserTokenManager tm) {
if (jj_initialized_once) {
System.out.println("ERROR: Second call to constructor of static parser. ");
System.out.println(" You must either use ReInit() or set the JavaCC option STATIC to false");
System.out.println(" during parser generation.");
throw new Error();
}
jj_initialized_once = true;
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 2; i++) jj_la1[i] = -1;
}
/** Reinitialise. */
public void ReInit(ParserTokenManager tm) {
token_source = tm;
token = new Token();
jj_ntk = -1;
jj_gen = 0;
for (int i = 0; i < 2; i++) jj_la1[i] = -1;
}
static private Token jj_consume_token(int kind) throws ParseException {
Token oldToken;
if ((oldToken = token).next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
if (token.kind == kind) {
jj_gen++;
return token;
}
token = oldToken;
jj_kind = kind;
throw generateParseException();
}
/** Get the next Token. */
static final public Token getNextToken() {
if (token.next != null) token = token.next;
else token = token.next = token_source.getNextToken();
jj_ntk = -1;
jj_gen++;
return token;
}
/** Get the specific Token. */
static final public Token getToken(int index) {
Token t = token;
for (int i = 0; i < index; i++) {
if (t.next != null) t = t.next;
else t = t.next = token_source.getNextToken();
}
return t;
}
static private int jj_ntk() {
if ((jj_nt=token.next) == null)
return (jj_ntk = (token.next=token_source.getNextToken()).kind);
else
return (jj_ntk = jj_nt.kind);
}
static private java.util.List<int[]> jj_expentries = new java.util.ArrayList<int[]>();
static private int[] jj_expentry;
static private int jj_kind = -1;
/** Generate ParseException. */
static public ParseException generateParseException() {
jj_expentries.clear();
boolean[] la1tokens = new boolean[11];
if (jj_kind >= 0) {
la1tokens[jj_kind] = true;
jj_kind = -1;
}
for (int i = 0; i < 2; i++) {
if (jj_la1[i] == jj_gen) {
for (int j = 0; j < 32; j++) {
if ((jj_la1_0[i] & (1<<j)) != 0) {
la1tokens[j] = true;
}
}
}
}
for (int i = 0; i < 11; i++) {
if (la1tokens[i]) {
jj_expentry = new int[1];
jj_expentry[0] = i;
jj_expentries.add(jj_expentry);
}
}
int[][] exptokseq = new int[jj_expentries.size()][];
for (int i = 0; i < jj_expentries.size(); i++) {
exptokseq[i] = jj_expentries.get(i);
}
return new ParseException(token, exptokseq, tokenImage);
}
/** Enable tracing. */
static final public void enable_tracing() {
}
/** Disable tracing. */
static final public void disable_tracing() {
}
}

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/* Generated By:JavaCC: Do not edit this line. ParserConstants.java */
package edu.utexas.cs345.jdblisp.parser;
/**
* Token literal values and constants.
* Generated by org.javacc.parser.OtherFilesGen#start()
*/
public interface ParserConstants {
/** End of File. */
int EOF = 0;
/** RegularExpression Id. */
int LPAREN = 6;
/** RegularExpression Id. */
int RPAREN = 7;
/** RegularExpression Id. */
int NUMB = 8;
/** RegularExpression Id. */
int STRG = 9;
/** RegularExpression Id. */
int SYMB = 10;
/** Lexical state. */
int DEFAULT = 0;
/** Literal token values. */
String[] tokenImage = {
"<EOF>",
"\" \"",
"\"\\r\"",
"\"\\t\"",
"\"\\n\"",
"\"\\n\\r\"",
"\"(\"",
"\")\"",
"<NUMB>",
"<STRG>",
"<SYMB>",
};
}

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/* Generated By:JavaCC: Do not edit this line. ParserTokenManager.java */
package edu.utexas.cs345.jdblisp.parser;
import edu.utexas.cs345.jdblisp.data.*;
/** Token Manager. */
public class ParserTokenManager implements ParserConstants
{
/** Debug output. */
public static java.io.PrintStream debugStream = System.out;
/** Set debug output. */
public static void setDebugStream(java.io.PrintStream ds) { debugStream = ds; }
private static final int jjStopStringLiteralDfa_0(int pos, long active0)
{
switch (pos)
{
default :
return -1;
}
}
private static final int jjStartNfa_0(int pos, long active0)
{
return jjMoveNfa_0(jjStopStringLiteralDfa_0(pos, active0), pos + 1);
}
static private int jjStopAtPos(int pos, int kind)
{
jjmatchedKind = kind;
jjmatchedPos = pos;
return pos + 1;
}
static private int jjMoveStringLiteralDfa0_0()
{
switch(curChar)
{
case 10:
jjmatchedKind = 4;
return jjMoveStringLiteralDfa1_0(0x20L);
case 40:
return jjStopAtPos(0, 6);
case 41:
return jjStopAtPos(0, 7);
default :
return jjMoveNfa_0(0, 0);
}
}
static private int jjMoveStringLiteralDfa1_0(long active0)
{
try { curChar = input_stream.readChar(); }
catch(java.io.IOException e) {
jjStopStringLiteralDfa_0(0, active0);
return 1;
}
switch(curChar)
{
case 13:
if ((active0 & 0x20L) != 0L)
return jjStopAtPos(1, 5);
break;
default :
break;
}
return jjStartNfa_0(0, active0);
}
static private int jjMoveNfa_0(int startState, int curPos)
{
int startsAt = 0;
jjnewStateCnt = 8;
int i = 1;
jjstateSet[0] = startState;
int kind = 0x7fffffff;
for (;;)
{
if (++jjround == 0x7fffffff)
ReInitRounds();
if (curChar < 64)
{
long l = 1L << curChar;
do
{
switch(jjstateSet[--i])
{
case 0:
if ((0x3ff000000000000L & l) != 0L)
{
if (kind > 8)
kind = 8;
jjCheckNAddTwoStates(1, 2);
}
else if ((0x2000ac0000000000L & l) != 0L)
{
if (kind > 10)
kind = 10;
jjCheckNAdd(7);
}
else if (curChar == 34)
jjAddStates(0, 1);
if ((0x280000000000L & l) != 0L)
jjCheckNAdd(1);
break;
case 1:
if ((0x3ff000000000000L & l) == 0L)
break;
if (kind > 8)
kind = 8;
jjCheckNAddTwoStates(1, 2);
break;
case 2:
if (curChar == 46)
jjCheckNAdd(3);
break;
case 3:
if ((0x3ff000000000000L & l) == 0L)
break;
if (kind > 8)
kind = 8;
jjCheckNAdd(3);
break;
case 4:
if (curChar == 34)
jjAddStates(0, 1);
break;
case 6:
if (curChar == 34 && kind > 9)
kind = 9;
break;
case 7:
if ((0x2000ac0000000000L & l) == 0L)
break;
if (kind > 10)
kind = 10;
jjCheckNAdd(7);
break;
default : break;
}
} while(i != startsAt);
}
else if (curChar < 128)
{
long l = 1L << (curChar & 077);
do
{
switch(jjstateSet[--i])
{
case 0:
case 7:
if ((0x7fffffe87fffffeL & l) == 0L)
break;
if (kind > 10)
kind = 10;
jjCheckNAdd(7);
break;
case 5:
if ((0x7fffffe87fffffeL & l) != 0L)
jjAddStates(0, 1);
break;
default : break;
}
} while(i != startsAt);
}
else
{
int i2 = (curChar & 0xff) >> 6;
long l2 = 1L << (curChar & 077);
do
{
switch(jjstateSet[--i])
{
default : break;
}
} while(i != startsAt);
}
if (kind != 0x7fffffff)
{
jjmatchedKind = kind;
jjmatchedPos = curPos;
kind = 0x7fffffff;
}
++curPos;
if ((i = jjnewStateCnt) == (startsAt = 8 - (jjnewStateCnt = startsAt)))
return curPos;
try { curChar = input_stream.readChar(); }
catch(java.io.IOException e) { return curPos; }
}
}
static final int[] jjnextStates = {
5, 6,
};
/** Token literal values. */
public static final String[] jjstrLiteralImages = {
"", null, null, null, null, null, "\50", "\51", null, null, null, };
/** Lexer state names. */
public static final String[] lexStateNames = {
"DEFAULT",
};
static final long[] jjtoToken = {
0x7c1L,
};
static final long[] jjtoSkip = {
0x3eL,
};
static protected SimpleCharStream input_stream;
static private final int[] jjrounds = new int[8];
static private final int[] jjstateSet = new int[16];
static protected char curChar;
/** Constructor. */
public ParserTokenManager(SimpleCharStream stream){
if (input_stream != null)
throw new TokenMgrError("ERROR: Second call to constructor of static lexer. You must use ReInit() to initialize the static variables.", TokenMgrError.STATIC_LEXER_ERROR);
input_stream = stream;
}
/** Constructor. */
public ParserTokenManager(SimpleCharStream stream, int lexState){
this(stream);
SwitchTo(lexState);
}
/** Reinitialise parser. */
static public void ReInit(SimpleCharStream stream)
{
jjmatchedPos = jjnewStateCnt = 0;
curLexState = defaultLexState;
input_stream = stream;
ReInitRounds();
}
static private void ReInitRounds()
{
int i;
jjround = 0x80000001;
for (i = 8; i-- > 0;)
jjrounds[i] = 0x80000000;
}
/** Reinitialise parser. */
static public void ReInit(SimpleCharStream stream, int lexState)
{
ReInit(stream);
SwitchTo(lexState);
}
/** Switch to specified lex state. */
static public void SwitchTo(int lexState)
{
if (lexState >= 1 || lexState < 0)
throw new TokenMgrError("Error: Ignoring invalid lexical state : " + lexState + ". State unchanged.", TokenMgrError.INVALID_LEXICAL_STATE);
else
curLexState = lexState;
}
static protected Token jjFillToken()
{
final Token t;
final String curTokenImage;
final int beginLine;
final int endLine;
final int beginColumn;
final int endColumn;
String im = jjstrLiteralImages[jjmatchedKind];
curTokenImage = (im == null) ? input_stream.GetImage() : im;
beginLine = input_stream.getBeginLine();
beginColumn = input_stream.getBeginColumn();
endLine = input_stream.getEndLine();
endColumn = input_stream.getEndColumn();
t = Token.newToken(jjmatchedKind, curTokenImage);
t.beginLine = beginLine;
t.endLine = endLine;
t.beginColumn = beginColumn;
t.endColumn = endColumn;
return t;
}
static int curLexState = 0;
static int defaultLexState = 0;
static int jjnewStateCnt;
static int jjround;
static int jjmatchedPos;
static int jjmatchedKind;
/** Get the next Token. */
public static Token getNextToken()
{
Token matchedToken;
int curPos = 0;
EOFLoop :
for (;;)
{
try
{
curChar = input_stream.BeginToken();
}
catch(java.io.IOException e)
{
jjmatchedKind = 0;
matchedToken = jjFillToken();
return matchedToken;
}
try { input_stream.backup(0);
while (curChar <= 32 && (0x100002200L & (1L << curChar)) != 0L)
curChar = input_stream.BeginToken();
}
catch (java.io.IOException e1) { continue EOFLoop; }
jjmatchedKind = 0x7fffffff;
jjmatchedPos = 0;
curPos = jjMoveStringLiteralDfa0_0();
if (jjmatchedKind != 0x7fffffff)
{
if (jjmatchedPos + 1 < curPos)
input_stream.backup(curPos - jjmatchedPos - 1);
if ((jjtoToken[jjmatchedKind >> 6] & (1L << (jjmatchedKind & 077))) != 0L)
{
matchedToken = jjFillToken();
return matchedToken;
}
else
{
continue EOFLoop;
}
}
int error_line = input_stream.getEndLine();
int error_column = input_stream.getEndColumn();
String error_after = null;
boolean EOFSeen = false;
try { input_stream.readChar(); input_stream.backup(1); }
catch (java.io.IOException e1) {
EOFSeen = true;
error_after = curPos <= 1 ? "" : input_stream.GetImage();
if (curChar == '\n' || curChar == '\r') {
error_line++;
error_column = 0;
}
else
error_column++;
}
if (!EOFSeen) {
input_stream.backup(1);
error_after = curPos <= 1 ? "" : input_stream.GetImage();
}
throw new TokenMgrError(EOFSeen, curLexState, error_line, error_column, error_after, curChar, TokenMgrError.LEXICAL_ERROR);
}
}
static private void jjCheckNAdd(int state)
{
if (jjrounds[state] != jjround)
{
jjstateSet[jjnewStateCnt++] = state;
jjrounds[state] = jjround;
}
}
static private void jjAddStates(int start, int end)
{
do {
jjstateSet[jjnewStateCnt++] = jjnextStates[start];
} while (start++ != end);
}
static private void jjCheckNAddTwoStates(int state1, int state2)
{
jjCheckNAdd(state1);
jjCheckNAdd(state2);
}
}

View File

@ -0,0 +1,476 @@
/* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 4.1 */
/* JavaCCOptions:STATIC=true */
package edu.utexas.cs345.jdblisp.parser;
/**
* An implementation of interface CharStream, where the stream is assumed to
* contain only ASCII characters (without unicode processing).
*/
public class SimpleCharStream
{
/** Whether parser is static. */
public static final boolean staticFlag = true;
static int bufsize;
static int available;
static int tokenBegin;
/** Position in buffer. */
static public int bufpos = -1;
static protected int bufline[];
static protected int bufcolumn[];
static protected int column = 0;
static protected int line = 1;
static protected boolean prevCharIsCR = false;
static protected boolean prevCharIsLF = false;
static protected java.io.Reader inputStream;
static protected char[] buffer;
static protected int maxNextCharInd = 0;
static protected int inBuf = 0;
static protected int tabSize = 8;
static protected void setTabSize(int i) { tabSize = i; }
static protected int getTabSize(int i) { return tabSize; }
static protected void ExpandBuff(boolean wrapAround)
{
char[] newbuffer = new char[bufsize + 2048];
int newbufline[] = new int[bufsize + 2048];
int newbufcolumn[] = new int[bufsize + 2048];
try
{
if (wrapAround)
{
System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
System.arraycopy(buffer, 0, newbuffer,
bufsize - tokenBegin, bufpos);
buffer = newbuffer;
System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
System.arraycopy(bufline, 0, newbufline, bufsize - tokenBegin, bufpos);
bufline = newbufline;
System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
System.arraycopy(bufcolumn, 0, newbufcolumn, bufsize - tokenBegin, bufpos);
bufcolumn = newbufcolumn;
maxNextCharInd = (bufpos += (bufsize - tokenBegin));
}
else
{
System.arraycopy(buffer, tokenBegin, newbuffer, 0, bufsize - tokenBegin);
buffer = newbuffer;
System.arraycopy(bufline, tokenBegin, newbufline, 0, bufsize - tokenBegin);
bufline = newbufline;
System.arraycopy(bufcolumn, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin);
bufcolumn = newbufcolumn;
maxNextCharInd = (bufpos -= tokenBegin);
}
}
catch (Throwable t)
{
throw new Error(t.getMessage());
}
bufsize += 2048;
available = bufsize;
tokenBegin = 0;
}
static protected void FillBuff() throws java.io.IOException
{
if (maxNextCharInd == available)
{
if (available == bufsize)
{
if (tokenBegin > 2048)
{
bufpos = maxNextCharInd = 0;
available = tokenBegin;
}
else if (tokenBegin < 0)
bufpos = maxNextCharInd = 0;
else
ExpandBuff(false);
}
else if (available > tokenBegin)
available = bufsize;
else if ((tokenBegin - available) < 2048)
ExpandBuff(true);
else
available = tokenBegin;
}
int i;
try {
if ((i = inputStream.read(buffer, maxNextCharInd,
available - maxNextCharInd)) == -1)
{
inputStream.close();
throw new java.io.IOException();
}
else
maxNextCharInd += i;
return;
}
catch(java.io.IOException e) {
--bufpos;
backup(0);
if (tokenBegin == -1)
tokenBegin = bufpos;
throw e;
}
}
/** Start. */
static public char BeginToken() throws java.io.IOException
{
tokenBegin = -1;
char c = readChar();
tokenBegin = bufpos;
return c;
}
static protected void UpdateLineColumn(char c)
{
column++;
if (prevCharIsLF)
{
prevCharIsLF = false;
line += (column = 1);
}
else if (prevCharIsCR)
{
prevCharIsCR = false;
if (c == '\n')
{
prevCharIsLF = true;
}
else
line += (column = 1);
}
switch (c)
{
case '\r' :
prevCharIsCR = true;
break;
case '\n' :
prevCharIsLF = true;
break;
case '\t' :
column--;
column += (tabSize - (column % tabSize));
break;
default :
break;
}
bufline[bufpos] = line;
bufcolumn[bufpos] = column;
}
/** Read a character. */
static public char readChar() throws java.io.IOException
{
if (inBuf > 0)
{
--inBuf;
if (++bufpos == bufsize)
bufpos = 0;
return buffer[bufpos];
}
if (++bufpos >= maxNextCharInd)
FillBuff();
char c = buffer[bufpos];
UpdateLineColumn(c);
return c;
}
/**
* @deprecated
* @see #getEndColumn
*/
static public int getColumn() {
return bufcolumn[bufpos];
}
/**
* @deprecated
* @see #getEndLine
*/
static public int getLine() {
return bufline[bufpos];
}
/** Get token end column number. */
static public int getEndColumn() {
return bufcolumn[bufpos];
}
/** Get token end line number. */
static public int getEndLine() {
return bufline[bufpos];
}
/** Get token beginning column number. */
static public int getBeginColumn() {
return bufcolumn[tokenBegin];
}
/** Get token beginning line number. */
static public int getBeginLine() {
return bufline[tokenBegin];
}
/** Backup a number of characters. */
static public void backup(int amount) {
inBuf += amount;
if ((bufpos -= amount) < 0)
bufpos += bufsize;
}
/** Constructor. */
public SimpleCharStream(java.io.Reader dstream, int startline,
int startcolumn, int buffersize)
{
if (inputStream != null)
throw new Error("\n ERROR: Second call to the constructor of a static SimpleCharStream.\n" +
" You must either use ReInit() or set the JavaCC option STATIC to false\n" +
" during the generation of this class.");
inputStream = dstream;
line = startline;
column = startcolumn - 1;
available = bufsize = buffersize;
buffer = new char[buffersize];
bufline = new int[buffersize];
bufcolumn = new int[buffersize];
}
/** Constructor. */
public SimpleCharStream(java.io.Reader dstream, int startline,
int startcolumn)
{
this(dstream, startline, startcolumn, 4096);
}
/** Constructor. */
public SimpleCharStream(java.io.Reader dstream)
{
this(dstream, 1, 1, 4096);
}
/** Reinitialise. */
public void ReInit(java.io.Reader dstream, int startline,
int startcolumn, int buffersize)
{
inputStream = dstream;
line = startline;
column = startcolumn - 1;
if (buffer == null || buffersize != buffer.length)
{
available = bufsize = buffersize;
buffer = new char[buffersize];
bufline = new int[buffersize];
bufcolumn = new int[buffersize];
}
prevCharIsLF = prevCharIsCR = false;
tokenBegin = inBuf = maxNextCharInd = 0;
bufpos = -1;
}
/** Reinitialise. */
public void ReInit(java.io.Reader dstream, int startline,
int startcolumn)
{
ReInit(dstream, startline, startcolumn, 4096);
}
/** Reinitialise. */
public void ReInit(java.io.Reader dstream)
{
ReInit(dstream, 1, 1, 4096);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline,
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
{
this(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, int startline,
int startcolumn, int buffersize)
{
this(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, String encoding, int startline,
int startcolumn) throws java.io.UnsupportedEncodingException
{
this(dstream, encoding, startline, startcolumn, 4096);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, int startline,
int startcolumn)
{
this(dstream, startline, startcolumn, 4096);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
{
this(dstream, encoding, 1, 1, 4096);
}
/** Constructor. */
public SimpleCharStream(java.io.InputStream dstream)
{
this(dstream, 1, 1, 4096);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, String encoding, int startline,
int startcolumn, int buffersize) throws java.io.UnsupportedEncodingException
{
ReInit(encoding == null ? new java.io.InputStreamReader(dstream) : new java.io.InputStreamReader(dstream, encoding), startline, startcolumn, buffersize);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, int startline,
int startcolumn, int buffersize)
{
ReInit(new java.io.InputStreamReader(dstream), startline, startcolumn, buffersize);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, String encoding) throws java.io.UnsupportedEncodingException
{
ReInit(dstream, encoding, 1, 1, 4096);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream)
{
ReInit(dstream, 1, 1, 4096);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, String encoding, int startline,
int startcolumn) throws java.io.UnsupportedEncodingException
{
ReInit(dstream, encoding, startline, startcolumn, 4096);
}
/** Reinitialise. */
public void ReInit(java.io.InputStream dstream, int startline,
int startcolumn)
{
ReInit(dstream, startline, startcolumn, 4096);
}
/** Get token literal value. */
static public String GetImage()
{
if (bufpos >= tokenBegin)
return new String(buffer, tokenBegin, bufpos - tokenBegin + 1);
else
return new String(buffer, tokenBegin, bufsize - tokenBegin) +
new String(buffer, 0, bufpos + 1);
}
/** Get the suffix. */
static public char[] GetSuffix(int len)
{
char[] ret = new char[len];
if ((bufpos + 1) >= len)
System.arraycopy(buffer, bufpos - len + 1, ret, 0, len);
else
{
System.arraycopy(buffer, bufsize - (len - bufpos - 1), ret, 0,
len - bufpos - 1);
System.arraycopy(buffer, 0, ret, len - bufpos - 1, bufpos + 1);
}
return ret;
}
/** Reset buffer when finished. */
static public void Done()
{
buffer = null;
bufline = null;
bufcolumn = null;
}
/**
* Method to adjust line and column numbers for the start of a token.
*/
static public void adjustBeginLineColumn(int newLine, int newCol)
{
int start = tokenBegin;
int len;
if (bufpos >= tokenBegin)
{
len = bufpos - tokenBegin + inBuf + 1;
}
else
{
len = bufsize - tokenBegin + bufpos + 1 + inBuf;
}
int i = 0, j = 0, k = 0;
int nextColDiff = 0, columnDiff = 0;
while (i < len &&
bufline[j = start % bufsize] == bufline[k = ++start % bufsize])
{
bufline[j] = newLine;
nextColDiff = columnDiff + bufcolumn[k] - bufcolumn[j];
bufcolumn[j] = newCol + columnDiff;
columnDiff = nextColDiff;
i++;
}
if (i < len)
{
bufline[j] = newLine++;
bufcolumn[j] = newCol + columnDiff;
while (i++ < len)
{
if (bufline[j = start % bufsize] != bufline[++start % bufsize])
bufline[j] = newLine++;
else
bufline[j] = newLine;
}
}
line = bufline[j];
column = bufcolumn[j];
}
}
/* JavaCC - OriginalChecksum=4adcd3f1268ce432e9d4b7531b9662ad (do not edit this line) */

View File

@ -0,0 +1,124 @@
/* Generated By:JavaCC: Do not edit this line. Token.java Version 4.1 */
/* JavaCCOptions:TOKEN_EXTENDS=,KEEP_LINE_COL=null */
package edu.utexas.cs345.jdblisp.parser;
/**
* Describes the input token stream.
*/
public class Token {
/**
* An integer that describes the kind of this token. This numbering
* system is determined by JavaCCParser, and a table of these numbers is
* stored in the file ...Constants.java.
*/
public int kind;
/** The line number of the first character of this Token. */
public int beginLine;
/** The column number of the first character of this Token. */
public int beginColumn;
/** The line number of the last character of this Token. */
public int endLine;
/** The column number of the last character of this Token. */
public int endColumn;
/**
* The string image of the token.
*/
public String image;
/**
* A reference to the next regular (non-special) token from the input
* stream. If this is the last token from the input stream, or if the
* token manager has not read tokens beyond this one, this field is
* set to null. This is true only if this token is also a regular
* token. Otherwise, see below for a description of the contents of
* this field.
*/
public Token next;
/**
* This field is used to access special tokens that occur prior to this
* token, but after the immediately preceding regular (non-special) token.
* If there are no such special tokens, this field is set to null.
* When there are more than one such special token, this field refers
* to the last of these special tokens, which in turn refers to the next
* previous special token through its specialToken field, and so on
* until the first special token (whose specialToken field is null).
* The next fields of special tokens refer to other special tokens that
* immediately follow it (without an intervening regular token). If there
* is no such token, this field is null.
*/
public Token specialToken;
/**
* An optional attribute value of the Token.
* Tokens which are not used as syntactic sugar will often contain
* meaningful values that will be used later on by the compiler or
* interpreter. This attribute value is often different from the image.
* Any subclass of Token that actually wants to return a non-null value can
* override this method as appropriate.
*/
public Object getValue() {
return null;
}
/**
* No-argument constructor
*/
public Token() {}
/**
* Constructs a new token for the specified Image.
*/
public Token(int kind)
{
this(kind, null);
}
/**
* Constructs a new token for the specified Image and Kind.
*/
public Token(int kind, String image)
{
this.kind = kind;
this.image = image;
}
/**
* Returns the image.
*/
public String toString()
{
return image;
}
/**
* Returns a new Token object, by default. However, if you want, you
* can create and return subclass objects based on the value of ofKind.
* Simply add the cases to the switch for all those special cases.
* For example, if you have a subclass of Token called IDToken that
* you want to create if ofKind is ID, simply add something like :
*
* case MyParserConstants.ID : return new IDToken(ofKind, image);
*
* to the following switch statement. Then you can cast matchedToken
* variable to the appropriate type and use sit in your lexical actions.
*/
public static Token newToken(int ofKind, String image)
{
switch(ofKind)
{
default : return new Token(ofKind, image);
}
}
public static Token newToken(int ofKind)
{
return newToken(ofKind, null);
}
}
/* JavaCC - OriginalChecksum=d28ecf56b256889a3fed2c9be26df91b (do not edit this line) */

View File

@ -0,0 +1,141 @@
/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 4.1 */
/* JavaCCOptions: */
package edu.utexas.cs345.jdblisp.parser;
/** Token Manager Error. */
@SuppressWarnings("serial")
public class TokenMgrError extends Error
{
/*
* Ordinals for various reasons why an Error of this type can be thrown.
*/
/**
* Lexical error occurred.
*/
static final int LEXICAL_ERROR = 0;
/**
* An attempt was made to create a second instance of a static token manager.
*/
static final int STATIC_LEXER_ERROR = 1;
/**
* Tried to change to an invalid lexical state.
*/
static final int INVALID_LEXICAL_STATE = 2;
/**
* Detected (and bailed out of) an infinite loop in the token manager.
*/
static final int LOOP_DETECTED = 3;
/**
* Indicates the reason why the exception is thrown. It will have
* one of the above 4 values.
*/
int errorCode;
/**
* Replaces unprintable characters by their escaped (or unicode escaped)
* equivalents in the given string
*/
protected static final String addEscapes(String str) {
StringBuffer retval = new StringBuffer();
char ch;
for (int i = 0; i < str.length(); i++) {
switch (str.charAt(i))
{
case 0 :
continue;
case '\b':
retval.append("\\b");
continue;
case '\t':
retval.append("\\t");
continue;
case '\n':
retval.append("\\n");
continue;
case '\f':
retval.append("\\f");
continue;
case '\r':
retval.append("\\r");
continue;
case '\"':
retval.append("\\\"");
continue;
case '\'':
retval.append("\\\'");
continue;
case '\\':
retval.append("\\\\");
continue;
default:
if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
String s = "0000" + Integer.toString(ch, 16);
retval.append("\\u" + s.substring(s.length() - 4, s.length()));
} else {
retval.append(ch);
}
continue;
}
}
return retval.toString();
}
/**
* Returns a detailed message for the Error when it is thrown by the
* token manager to indicate a lexical error.
* Parameters :
* EOFSeen : indicates if EOF caused the lexical error
* curLexState : lexical state in which this error occurred
* errorLine : line number when the error occurred
* errorColumn : column number when the error occurred
* errorAfter : prefix that was seen before this error occurred
* curchar : the offending character
* Note: You can customize the lexical error message by modifying this method.
*/
protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) {
return("Lexical error at line " +
errorLine + ", column " +
errorColumn + ". Encountered: " +
(EOFSeen ? "<EOF> " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int)curChar + "), ") +
"after : \"" + addEscapes(errorAfter) + "\"");
}
/**
* You can also modify the body of this method to customize your error messages.
* For example, cases like LOOP_DETECTED and INVALID_LEXICAL_STATE are not
* of end-users concern, so you can return something like :
*
* "Internal Error : Please file a bug report .... "
*
* from this method for such cases in the release version of your parser.
*/
public String getMessage() {
return super.getMessage();
}
/*
* Constructors of various flavors follow.
*/
/** No arg constructor. */
public TokenMgrError() {
}
/** Constructor with message and reason. */
public TokenMgrError(String message, int reason) {
super(message);
errorCode = reason;
}
/** Full Constructor. */
public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason) {
this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
}
}
/* JavaCC - OriginalChecksum=388d16ceb49acdb4db62ae0c5dc59f76 (do not edit this line) */