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commonMain.org.luaj.vm2.parser.SimpleCharStream.kt Maven / Gradle / Ivy
/* Generated By:JavaCC: Do not edit this line. SimpleCharStream.java Version 5.0 */
/* JavaCCOptions:STATIC=false,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
package org.luaj.vm2.parser
import org.luaj.vm2.internal.*
import org.luaj.vm2.io.*
import kotlin.jvm.*
/**
* An implementation of interface CharStream, where the stream is assumed to
* contain only ASCII characters (without unicode processing).
*/
class SimpleCharStream
/** Constructor. */
@JvmOverloads constructor(
protected var inputStream: LuaReader,
startline: Int = 1,
startcolumn: Int = 1, buffersize: Int = 4096
) {
internal var bufsize: Int = 0
internal var available: Int = 0
internal var tokenBegin: Int = 0
/** Position in buffer. */
var bufpos = -1
protected var bufline: IntArray? = null
protected var bufcolumn: IntArray? = null
protected var column = 0
protected var line = 1
protected var prevCharIsCR = false
protected var prevCharIsLF = false
protected var buffer: CharArray? = null
protected var maxNextCharInd = 0
protected var inBuf = 0
@kotlin.jvm.JvmField
protected var tabSize = 1
/** Get token end column number. */
val endColumn: Int get() = bufcolumn!![bufpos]
/** Get token end line number. */
val endLine: Int get() = bufline!![bufpos]
/** Get token beginning column number. */
val beginColumn: Int get() = bufcolumn!![tokenBegin]
/** Get token beginning line number. */
val beginLine: Int get() = bufline!![tokenBegin]
fun setTabSize(i: Int) {
tabSize = i
}
fun getTabSize(i: Int): Int = tabSize
protected fun ExpandBuff(wrapAround: Boolean) {
val newbuffer = CharArray(bufsize + 2048)
val newbufline = IntArray(bufsize + 2048)
val newbufcolumn = IntArray(bufsize + 2048)
try {
if (wrapAround) {
arraycopy(buffer!!, tokenBegin, newbuffer, 0, bufsize - tokenBegin)
arraycopy(buffer!!, 0, newbuffer, bufsize - tokenBegin, bufpos)
buffer = newbuffer
arraycopy(bufline!!, tokenBegin, newbufline, 0, bufsize - tokenBegin)
arraycopy(bufline!!, 0, newbufline, bufsize - tokenBegin, bufpos)
bufline = newbufline
arraycopy(bufcolumn!!, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin)
arraycopy(bufcolumn!!, 0, newbufcolumn, bufsize - tokenBegin, bufpos)
bufcolumn = newbufcolumn
maxNextCharInd = (run { bufpos += bufsize - tokenBegin; bufpos })
} else {
arraycopy(buffer!!, tokenBegin, newbuffer, 0, bufsize - tokenBegin)
buffer = newbuffer
arraycopy(bufline!!, tokenBegin, newbufline, 0, bufsize - tokenBegin)
bufline = newbufline
arraycopy(bufcolumn!!, tokenBegin, newbufcolumn, 0, bufsize - tokenBegin)
bufcolumn = newbufcolumn
maxNextCharInd = (run { bufpos -= tokenBegin; bufpos })
}
} catch (t: Throwable) {
throw Error(t.message)
}
bufsize += 2048
available = bufsize
tokenBegin = 0
}
protected fun FillBuff() {
if (maxNextCharInd == available) {
when {
available == bufsize -> when {
tokenBegin > 2048 -> {
maxNextCharInd = 0
bufpos = maxNextCharInd
available = tokenBegin
}
tokenBegin < 0 -> {
maxNextCharInd = 0
bufpos = maxNextCharInd
}
else -> ExpandBuff(false)
}
available > tokenBegin -> available = bufsize
tokenBegin - available < 2048 -> ExpandBuff(true)
else -> available = tokenBegin
}
}
val i: Int
try {
if ((run { i = inputStream.read(buffer!!, maxNextCharInd, available - maxNextCharInd); i }) == -1) {
inputStream.close()
throw IOException()
} else {
maxNextCharInd += i
}
return
} catch (e: IOException) {
--bufpos
backup(0)
if (tokenBegin == -1) tokenBegin = bufpos
throw e
}
}
/** Start. */
fun BeginToken(): Char {
tokenBegin = -1
val c = readChar()
tokenBegin = bufpos
return c
}
protected fun UpdateLineColumn(c: Char) {
column++
if (prevCharIsLF) {
prevCharIsLF = false
line += (run { column = 1; column })
} else if (prevCharIsCR) {
prevCharIsCR = false
if (c == '\n') prevCharIsLF = true else line += (run { column = 1; column })
}
when (c) {
'\r' -> prevCharIsCR = true
'\n' -> prevCharIsLF = true
'\t' -> {
column--
column += tabSize - column % tabSize
}
else -> Unit
}
bufline!![bufpos] = line
bufcolumn!![bufpos] = column
}
/** Read a character. */
fun readChar(): Char {
if (inBuf > 0) {
--inBuf
if (++bufpos == bufsize) bufpos = 0
return buffer!![bufpos]
}
if (++bufpos >= maxNextCharInd) FillBuff()
val c = buffer!![bufpos]
UpdateLineColumn(c)
return c
}
///**
// * DEPRECATED: @see .getEndColumn
// */
//fun getColumn(): Int {
// return bufcolumn!![bufpos]
//}
//
///**
// * DEPRECATED: @see .getEndLine
// */
//
//fun getLine(): Int {
// return bufline!![bufpos]
//}
/** Backup a number of characters. */
fun backup(amount: Int) {
inBuf += amount
if ((run { bufpos -= amount; bufpos }) < 0)
bufpos += bufsize
}
init {
line = startline
column = startcolumn - 1
bufsize = buffersize
available = bufsize
buffer = CharArray(buffersize)
bufline = IntArray(buffersize)
bufcolumn = IntArray(buffersize)
}
/** Reinitialise. */
@JvmOverloads
fun ReInit(
dstream: LuaReader, startline: Int = 1,
startcolumn: Int = 1, buffersize: Int = 4096
) {
inputStream = dstream
line = startline
column = startcolumn - 1
if (buffer == null || buffersize != buffer!!.size) {
bufsize = buffersize
available = bufsize
buffer = CharArray(buffersize)
bufline = IntArray(buffersize)
bufcolumn = IntArray(buffersize)
}
prevCharIsCR = false
prevCharIsLF = prevCharIsCR
maxNextCharInd = 0
inBuf = maxNextCharInd
tokenBegin = inBuf
bufpos = -1
}
/** Constructor. */
@JvmOverloads
constructor(
dstream: LuaBinInput, encoding: String?, startline: Int = 1,
startcolumn: Int = 1, buffersize: Int = 4096
) : this(
if (encoding == null) InputStreamLuaReader(dstream) else InputStreamLuaReader(dstream, encoding),
startline,
startcolumn,
buffersize
)
/** Constructor. */
@JvmOverloads
constructor(
dstream: LuaBinInput, startline: Int = 1,
startcolumn: Int = 1, buffersize: Int = 4096
) : this(InputStreamLuaReader(dstream), startline, startcolumn, buffersize) {
}
/** Reinitialise. */
@JvmOverloads
fun ReInit(
dstream: LuaBinInput, encoding: String?, startline: Int = 1,
startcolumn: Int = 1, buffersize: Int = 4096
) {
ReInit(if (encoding == null) InputStreamLuaReader(dstream) else InputStreamLuaReader(dstream, encoding), startline, startcolumn, buffersize)
}
/** Reinitialise. */
@JvmOverloads
fun ReInit(
dstream: LuaBinInput, startline: Int = 1,
startcolumn: Int = 1, buffersize: Int = 4096
) {
ReInit(InputStreamLuaReader(dstream), startline, startcolumn, buffersize)
}
/** Get token literal value. */
fun GetImage(): String {
return if (bufpos >= tokenBegin)
buffer!!.concatToString(tokenBegin, bufpos + 1)
else
buffer!!.concatToString(tokenBegin, bufsize) + buffer!!.concatToString(0, bufpos + 1)
}
/** Get the suffix. */
fun GetSuffix(len: Int): CharArray {
val ret = CharArray(len)
if (bufpos + 1 >= len)
arraycopy(buffer!!, bufpos - len + 1, ret, 0, len)
else {
arraycopy(
buffer!!, bufsize - (len - bufpos - 1), ret, 0,
len - bufpos - 1
)
arraycopy(buffer!!, 0, ret, len - bufpos - 1, bufpos + 1)
}
return ret
}
/** Reset buffer when finished. */
fun Done() {
buffer = null
bufline = null
bufcolumn = null
}
/**
* Method to adjust line and column numbers for the start of a token.
*/
fun adjustBeginLineColumn(newLine: Int, newCol: Int) {
var newLine = newLine
var start = tokenBegin
val len: Int
if (bufpos >= tokenBegin) {
len = bufpos - tokenBegin + inBuf + 1
} else {
len = bufsize - tokenBegin + bufpos + 1 + inBuf
}
var i = 0
var j = 0
var k = 0
var nextColDiff = 0
var columnDiff = 0
while (i < len && bufline!![run { j = start % bufsize; j }] == bufline!![run { k = ++start % bufsize; k }]) {
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!![run { j = start % bufsize; j }] != bufline!![++start % bufsize])
bufline!![j] = newLine++
else
bufline!![j] = newLine
}
}
line = bufline!![j]
column = bufcolumn!![j]
}
companion object {
/** Whether parser is static. */
@kotlin.jvm.JvmField
val staticFlag = false
}
}
/** Constructor. */
/** Constructor. */
/** Reinitialise. */
/** Reinitialise. */
/** Constructor. */
/** Constructor. */
/** Constructor. */
/** Constructor. */
/** Reinitialise. */
/** Reinitialise. */
/** Reinitialise. */
/** Reinitialise. */
/* JavaCC - OriginalChecksum=ab0c629eabd887d4c88cec51eb5e6477 (do not edit this line) */
