Package org.spf4j.zel.vm

Class ZCompiler

java.lang.Object

org.spf4j.zel.vm.ZCompiler

All Implemented Interfaces:

ZCompilerConstants

public class ZCompiler
extends Object
implements ZCompilerConstants

Field Summary

Fields

Modifier and Type	Field	Description
Token	jj_nt	Next token.
Token	token	Current token.
ZCompilerTokenManager	token_source	Generated Token Manager.

Fields inherited from interface org.spf4j.zel.vm.ZCompilerConstants

AND, ARG, ASYNC, CASE_INS, CDOT, CHARACTER, CLBRACKET, CLM, COMMA, COMMENT_END, COMMENT_START, CONDITION, CONTEXT, DEC, DECIMAL, DECIMAL_LITERAL, DEFAULT, DETERMINISTIC, DIGIT, DIVIDE, DOT, E, ELSE, EOF, EQ, EQUAL, EXPONENT, FALSE, FIRST, FLOATING_POINT, FOR, FUNCTION, GE, GT, HEX_LITERAL, ID, IF, INC, INTEGER, LBRACE, LBRACKET, LE, LETTER, LIKE, LPAREN, LT, MATCHEXP, MEMORY, MINUS, MOD, MULTI_LINE, MULTIPLY, NEQ, NOT, NULL, OCTAL_LITERAL, OR, PI, PIPE, PLUS, POW, RBRACE, RBRACKET, RETURN, RPAREN, SAND, SCL, SINGLE_LINE_COMMENT, SLEEP, STRING, SWAP, SYNC, THROW, tokenImage, TRUE, USE, XOR

Constructor Summary

Constructors

Constructor	Description
ZCompiler(InputStream stream)	Constructor with InputStream.
ZCompiler(InputStream stream, String encoding)	Constructor with InputStream and supplied encoding
ZCompiler(Reader stream)	Constructor.
ZCompiler(ZCompilerTokenManager tm)	Constructor with generated Token Manager.

Method Summary

Modifier and Type	Method	Description
void	assignableExpression(ParsingContext context)
void	assignement(ParsingContext context)
void	compare(ParsingContext context)	Commparison operatiors: < > <= >= == !=
static void	compile(String source, InputStream is, Charset charset, ParsingContext context)	Compile a ZEL expression from Stream.
static void	compile(String source, Reader reader, ParsingContext context)	Compile a ZEL expression from Stream.
static void	compile(String source, String xpr, ParsingContext context)	Compile a ZEL expression from String.
static void	compilePredicate(String source, Reader reader, ParsingContext context)	Compile a ZEL expression predicate from Stream.
void	constant(ParsingContext context)
void	disable_tracing()	Disable tracing.
void	element(ParsingContext context, boolean left)
void	enable_tracing()	Enable tracing.
void	exponent(ParsingContext context)	the exponent operator: ^
void	expression(ParsingContext context)
void	forStmt(ParsingContext context)	The ZEL for statement, (similar with for from GO): for i = 0, result = 0; i < breakup; i = i + 1 { result = result + part[i] };
ParseException	generateParseException()	Generate ParseException.
Token	getNextToken()	Get the next Token.
Token	getToken(int index)	Get the specific Token.
void	ifStmt(ParsingContext context)	The IF statment.
void	logical(ParsingContext context)	Logical operators: AND OR XOR
void	mainprogram(ParsingContext context)
void	operations(ParsingContext context)	The ZEL operations: Assignements: x, y, z = {1, 2, 3}; f(x) = 4; Increment: x++ Decrement: x-- Swap: x <-> y
int	params(ParsingContext context)
void	program(ParsingContext context)
ParsingContext	programBlock(ParsingContext context)	A zel program block: { .....
void	programBlockStatic(ParsingContext context)
void	ReInit(InputStream stream)	Reinitialise.
void	ReInit(InputStream stream, String encoding)	Reinitialise.
void	ReInit(Reader stream)	Reinitialise.
void	ReInit(ZCompilerTokenManager tm)	Reinitialise.
void	statement(ParsingContext context)
void	sum(ParsingContext context)	+ - operators.
void	swap(ParsingContext context)
void	sysFunction(ParsingContext context)
void	term(ParsingContext context)	* / % operators
void	ternary(ParsingContext context)	The ternary operator: a < 0 ? 1 : 2
boolean	trace_enabled()	Trace enabled.
void	unary(ParsingContext context, boolean left)
void	unaryPost(ParsingContext context)	Method invocation + dereferencing.
void	zreturn(ParsingContext context)

Methods inherited from class java.lang.Object

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

Field Detail

token_source

public ZCompilerTokenManager token_source

Generated Token Manager.

token

public Token token

Current token.

jj_nt

public Token jj_nt

Next token.

Constructor Detail

ZCompiler

public ZCompiler(InputStream stream)

Constructor with InputStream.

ZCompiler

public ZCompiler(InputStream stream,
                 String encoding)

Constructor with InputStream and supplied encoding

ZCompiler

public ZCompiler(Reader stream)

Constructor.

ZCompiler

public ZCompiler(ZCompilerTokenManager tm)

Constructor with generated Token Manager.

Method Detail

compile

public static void compile(String source,
                           String xpr,
                           ParsingContext context)
                    throws ParseException

Compile a ZEL expression from String.

Throws:

ParseException

compile

public static void compile(String source,
                           InputStream is,
                           Charset charset,
                           ParsingContext context)
                    throws ParseException

Compile a ZEL expression from Stream.

Throws:

ParseException

compile

public static void compile(String source,
                           Reader reader,
                           ParsingContext context)
                    throws ParseException

Compile a ZEL expression from Stream.

Throws:

ParseException

compilePredicate

public static void compilePredicate(String source,
                                    Reader reader,
                                    ParsingContext context)
                             throws ParseException

Compile a ZEL expression predicate from Stream.

Throws:

ParseException

mainprogram

public final void mainprogram(ParsingContext context)
                       throws ParseException

Throws:

ParseException

program

public final void program(ParsingContext context)
                   throws ParseException

Throws:

ParseException

statement

public final void statement(ParsingContext context)
                     throws ParseException

Throws:

ParseException

forStmt

public final void forStmt(ParsingContext context)
                   throws ParseException

The ZEL for statement, (similar with for from GO): for i = 0, result = 0; i < breakup; i = i + 1 { result = result + part[i] };

Throws:

ParseException

ifStmt

public final void ifStmt(ParsingContext context)
                  throws ParseException

The IF statment. (Similar as in GO): if v > ma { ma = v } else if v < mi { mi = v }

Throws:

ParseException

programBlockStatic

public final void programBlockStatic(ParsingContext context)
                              throws ParseException

Throws:

ParseException

programBlock

public final ParsingContext programBlock(ParsingContext context)
                                  throws ParseException

A zel program block: { ..... }

Throws:

ParseException

zreturn

public final void zreturn(ParsingContext context)
                   throws ParseException

Throws:

ParseException

operations

public final void operations(ParsingContext context)
                      throws ParseException

The ZEL operations: Assignements: x, y, z = {1, 2, 3}; f(x) = 4; Increment: x++ Decrement: x-- Swap: x <-> y

Throws:

ParseException

assignement

public final void assignement(ParsingContext context)
                       throws ParseException

Throws:

ParseException

swap

public final void swap(ParsingContext context)
                throws ParseException

Throws:

ParseException

assignableExpression

public final void assignableExpression(ParsingContext context)
                                throws ParseException

Throws:

ParseException

expression

public final void expression(ParsingContext context)
                      throws ParseException

Throws:

ParseException

ternary

public final void ternary(ParsingContext context)
                   throws ParseException

The ternary operator: a < 0 ? 1 : 2

Throws:

ParseException

logical

public final void logical(ParsingContext context)
                   throws ParseException

Logical operators: AND OR XOR

Throws:

ParseException

compare

public final void compare(ParsingContext context)
                   throws ParseException

Commparison operatiors: < > <= >= == !=

Throws:

ParseException

sum

public final void sum(ParsingContext context)
               throws ParseException

+ - operators.

Throws:

ParseException

term

public final void term(ParsingContext context)
                throws ParseException

* / % operators

Throws:

ParseException

exponent

public final void exponent(ParsingContext context)
                    throws ParseException

the exponent operator: ^

Throws:

ParseException

unaryPost

public final void unaryPost(ParsingContext context)
                     throws ParseException

Method invocation + dereferencing.

Throws:

ParseException

unary

public final void unary(ParsingContext context,
                        boolean left)
                 throws ParseException

Throws:

ParseException

element

public final void element(ParsingContext context,
                          boolean left)
                   throws ParseException

Throws:

ParseException

params

public final int params(ParsingContext context)
                 throws ParseException

Throws:

ParseException

constant

public final void constant(ParsingContext context)
                    throws ParseException

Throws:

ParseException

sysFunction

public final void sysFunction(ParsingContext context)
                       throws ParseException

Throws:

ParseException

ReInit

public void ReInit(InputStream stream)

Reinitialise.

ReInit

public void ReInit(InputStream stream,
                   String encoding)

Reinitialise.

ReInit

public void ReInit(Reader stream)

Reinitialise.

ReInit

public void ReInit(ZCompilerTokenManager tm)

Reinitialise.

getNextToken

public final Token getNextToken()

Get the next Token.

getToken

public final Token getToken(int index)

Get the specific Token.

generateParseException

public ParseException generateParseException()

Generate ParseException.

trace_enabled

public final boolean trace_enabled()

Trace enabled.

enable_tracing

public final void enable_tracing()

Enable tracing.

disable_tracing

public final void disable_tracing()

Disable tracing.