Partial initial upload
This commit is contained in:
parent
8585f93ef7
commit
ab85fea44d
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@ -0,0 +1,156 @@
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|||
/*----------------------------------------------------------------------
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||||
Compiler Generator Coco/R,
|
||||
Copyright (c) 1990, 2004 Hanspeter Moessenboeck, University of Linz
|
||||
extended by M. Loeberbauer & A. Woess, Univ. of Linz
|
||||
with improvements by Pat Terry, Rhodes University
|
||||
|
||||
This program is free software; you can redistribute it and/or modify it
|
||||
under the terms of the GNU General Public License as published by the
|
||||
Free Software Foundation; either version 2, or (at your option) any
|
||||
later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
|
||||
As an exception, it is allowed to write an extension of Coco/R that is
|
||||
used as a plugin in non-free software.
|
||||
|
||||
If not otherwise stated, any source code generated by Coco/R (other than
|
||||
Coco/R itself) does not fall under the GNU General Public License.
|
||||
----------------------------------------------------------------------*/
|
||||
-->begin
|
||||
using System;
|
||||
|
||||
-->namespace
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||||
|
||||
public class Parser {
|
||||
-->constants
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||||
const bool T = true;
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||||
const bool x = false;
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||||
const int minErrDist = 2;
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||||
|
||||
public Scanner scanner;
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||||
public Errors errors;
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||||
|
||||
public Token t; // last recognized token
|
||||
public Token la; // lookahead token
|
||||
int errDist = minErrDist;
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||||
|
||||
-->declarations
|
||||
|
||||
public Parser(Scanner scanner) {
|
||||
this.scanner = scanner;
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||||
errors = new Errors();
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||||
}
|
||||
|
||||
void SynErr (int n) {
|
||||
if (errDist >= minErrDist) errors.SynErr(la.line, la.col, n);
|
||||
errDist = 0;
|
||||
}
|
||||
|
||||
public void SemErr (string msg) {
|
||||
if (errDist >= minErrDist) errors.SemErr(t.line, t.col, msg);
|
||||
errDist = 0;
|
||||
}
|
||||
|
||||
void Get () {
|
||||
for (;;) {
|
||||
t = la;
|
||||
la = scanner.Scan();
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||||
if (la.kind <= maxT) { ++errDist; break; }
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||||
-->pragmas
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||||
la = t;
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||||
}
|
||||
}
|
||||
|
||||
void Expect (int n) {
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if (la.kind==n) Get(); else { SynErr(n); }
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}
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|
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bool StartOf (int s) {
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return set[s, la.kind];
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}
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||||
|
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void ExpectWeak (int n, int follow) {
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||||
if (la.kind == n) Get();
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||||
else {
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||||
SynErr(n);
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||||
while (!StartOf(follow)) Get();
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||||
}
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||||
}
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||||
|
||||
|
||||
bool WeakSeparator(int n, int syFol, int repFol) {
|
||||
int kind = la.kind;
|
||||
if (kind == n) {Get(); return true;}
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else if (StartOf(repFol)) {return false;}
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||||
else {
|
||||
SynErr(n);
|
||||
while (!(set[syFol, kind] || set[repFol, kind] || set[0, kind])) {
|
||||
Get();
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kind = la.kind;
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||||
}
|
||||
return StartOf(syFol);
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||||
}
|
||||
}
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||||
|
||||
|
||||
-->productions
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||||
|
||||
public void Parse() {
|
||||
la = new Token();
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||||
la.val = "";
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Get();
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-->parseRoot
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||||
}
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static readonly bool[,] set = {
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-->initialization
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||||
};
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} // end Parser
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||||
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|
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public class Errors {
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public int count = 0; // number of errors detected
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||||
public System.IO.TextWriter errorStream = Console.Out; // error messages go to this stream
|
||||
public string errMsgFormat = "-- line {0} col {1}: {2}"; // 0=line, 1=column, 2=text
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||||
|
||||
public virtual void SynErr (int line, int col, int n) {
|
||||
string s;
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||||
switch (n) {
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-->errors
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default: s = "error " + n; break;
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}
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errorStream.WriteLine(errMsgFormat, line, col, s);
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||||
count++;
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||||
}
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||||
|
||||
public virtual void SemErr (int line, int col, string s) {
|
||||
errorStream.WriteLine(errMsgFormat, line, col, s);
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||||
count++;
|
||||
}
|
||||
|
||||
public virtual void SemErr (string s) {
|
||||
errorStream.WriteLine(s);
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||||
count++;
|
||||
}
|
||||
|
||||
public virtual void Warning (int line, int col, string s) {
|
||||
errorStream.WriteLine(errMsgFormat, line, col, s);
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||||
}
|
||||
|
||||
public virtual void Warning(string s) {
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||||
errorStream.WriteLine(s);
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||||
}
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||||
} // Errors
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||||
|
||||
|
||||
public class FatalError: Exception {
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||||
public FatalError(string m): base(m) {}
|
||||
}
|
||||
|
|
@ -0,0 +1,66 @@
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|||
|
||||
Microsoft Visual Studio Solution File, Format Version 11.00
|
||||
# Visual Studio 2010
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PingPong", "PingPong\PingPong.csproj", "{D5DF4388-106F-40F7-B54C-72E71376AB43}"
|
||||
EndProject
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PingPong.GameEngine", "PingPong.GameEngine\PingPong.GameEngine.csproj", "{9C0A0C83-B112-4959-BD94-D6A22AD5AC90}"
|
||||
EndProject
|
||||
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PingPong.Generic", "PingPong.Generic\PingPong.Generic.csproj", "{630BDE02-B1C2-4D9F-8BFB-4FCAF128BE14}"
|
||||
EndProject
|
||||
Global
|
||||
GlobalSection(SolutionConfigurationPlatforms) = preSolution
|
||||
Debug|x86 = Debug|x86
|
||||
Release|x86 = Release|x86
|
||||
EndGlobalSection
|
||||
GlobalSection(ProjectConfigurationPlatforms) = postSolution
|
||||
{630BDE02-B1C2-4D9F-8BFB-4FCAF128BE14}.Debug|x86.ActiveCfg = Debug|Any CPU
|
||||
{630BDE02-B1C2-4D9F-8BFB-4FCAF128BE14}.Debug|x86.Build.0 = Debug|Any CPU
|
||||
{630BDE02-B1C2-4D9F-8BFB-4FCAF128BE14}.Release|x86.ActiveCfg = Release|Any CPU
|
||||
{630BDE02-B1C2-4D9F-8BFB-4FCAF128BE14}.Release|x86.Build.0 = Release|Any CPU
|
||||
{9C0A0C83-B112-4959-BD94-D6A22AD5AC90}.Debug|x86.ActiveCfg = Debug|Any CPU
|
||||
{9C0A0C83-B112-4959-BD94-D6A22AD5AC90}.Debug|x86.Build.0 = Debug|Any CPU
|
||||
{9C0A0C83-B112-4959-BD94-D6A22AD5AC90}.Release|x86.ActiveCfg = Release|Any CPU
|
||||
{9C0A0C83-B112-4959-BD94-D6A22AD5AC90}.Release|x86.Build.0 = Release|Any CPU
|
||||
{D5DF4388-106F-40F7-B54C-72E71376AB43}.Debug|x86.ActiveCfg = Debug|x86
|
||||
{D5DF4388-106F-40F7-B54C-72E71376AB43}.Debug|x86.Build.0 = Debug|x86
|
||||
{D5DF4388-106F-40F7-B54C-72E71376AB43}.Release|x86.ActiveCfg = Release|x86
|
||||
{D5DF4388-106F-40F7-B54C-72E71376AB43}.Release|x86.Build.0 = Release|x86
|
||||
EndGlobalSection
|
||||
GlobalSection(MonoDevelopProperties) = preSolution
|
||||
StartupItem = PingPong\PingPong.csproj
|
||||
Policies = $0
|
||||
$0.DotNetNamingPolicy = $1
|
||||
$1.DirectoryNamespaceAssociation = PrefixedHierarchical
|
||||
$1.ResourceNamePolicy = FileFormatDefault
|
||||
$0.TextStylePolicy = $2
|
||||
$2.inheritsSet = null
|
||||
$2.scope = text/x-csharp
|
||||
$0.CSharpFormattingPolicy = $3
|
||||
$3.IndentSwitchBody = True
|
||||
$3.AnonymousMethodBraceStyle = NextLine
|
||||
$3.PropertyBraceStyle = NextLine
|
||||
$3.PropertyGetBraceStyle = NextLine
|
||||
$3.PropertySetBraceStyle = NextLine
|
||||
$3.EventBraceStyle = NextLine
|
||||
$3.EventAddBraceStyle = NextLine
|
||||
$3.EventRemoveBraceStyle = NextLine
|
||||
$3.StatementBraceStyle = NextLine
|
||||
$3.ElseNewLinePlacement = NewLine
|
||||
$3.CatchNewLinePlacement = NewLine
|
||||
$3.FinallyNewLinePlacement = NewLine
|
||||
$3.ArrayInitializerBraceStyle = NextLine
|
||||
$3.BeforeMethodDeclarationParentheses = False
|
||||
$3.BeforeMethodCallParentheses = False
|
||||
$3.AfterMethodCallParameterComma = False
|
||||
$3.BeforeConstructorDeclarationParentheses = False
|
||||
$3.BeforeDelegateDeclarationParentheses = False
|
||||
$3.NewParentheses = False
|
||||
$3.SpacesBeforeBrackets = False
|
||||
$3.BlankLinesBeforeFirstDeclaration = 1
|
||||
$3.BlankLinesBetweenFields = 1
|
||||
$3.BlankLinesBetweenEventFields = 1
|
||||
$3.inheritsSet = Mono
|
||||
$3.inheritsScope = text/x-csharp
|
||||
$3.scope = text/x-csharp
|
||||
EndGlobalSection
|
||||
EndGlobal
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||||
|
|
@ -0,0 +1,20 @@
|
|||
<Properties>
|
||||
<MonoDevelop.Ide.Workspace ActiveConfiguration="Debug|x86" />
|
||||
<MonoDevelop.Ide.Workbench ActiveDocument="Team Explorer">
|
||||
<Files>
|
||||
<File FileName="PingPong.GameEngine/GameDefinition.cs" Line="16" Column="4" />
|
||||
<File FileName="PingPong.GameEngine/GameCondition.cs" Line="24" Column="27" />
|
||||
<File FileName="PingPong.GameEngine/GameState.cs" Line="98" Column="4" />
|
||||
<File FileName="PingPong.GameEngine/Components/Team.cs" Line="221" Column="4" />
|
||||
<File FileName="PingPong.GameEngine/Components/Score.cs" Line="187" Column="37" />
|
||||
<File FileName="PingPong.GameEngine/Engine.cs" Line="39" Column="124" />
|
||||
<File FileName="PingPong.GameEngine/Components/IScorable.cs" Line="13" Column="3" />
|
||||
<File FileName="PingPong.GameEngine/Components/ScoringType.cs" Line="9" Column="13" />
|
||||
<File FileName="Team Explorer" />
|
||||
</Files>
|
||||
</MonoDevelop.Ide.Workbench>
|
||||
<MonoDevelop.Ide.DebuggingService.Breakpoints>
|
||||
<BreakpointStore />
|
||||
</MonoDevelop.Ide.DebuggingService.Breakpoints>
|
||||
<MonoDevelop.Ide.DebuggingService.PinnedWatches />
|
||||
</Properties>
|
||||
|
|
@ -0,0 +1,381 @@
|
|||
/*----------------------------------------------------------------------
|
||||
Compiler Generator Coco/R,
|
||||
Copyright (c) 1990, 2004 Hanspeter Moessenboeck, University of Linz
|
||||
extended by M. Loeberbauer & A. Woess, Univ. of Linz
|
||||
with improvements by Pat Terry, Rhodes University
|
||||
|
||||
This program is free software; you can redistribute it and/or modify it
|
||||
under the terms of the GNU General Public License as published by the
|
||||
Free Software Foundation; either version 2, or (at your option) any
|
||||
later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful, but
|
||||
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License along
|
||||
with this program; if not, write to the Free Software Foundation, Inc.,
|
||||
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
||||
|
||||
As an exception, it is allowed to write an extension of Coco/R that is
|
||||
used as a plugin in non-free software.
|
||||
|
||||
If not otherwise stated, any source code generated by Coco/R (other than
|
||||
Coco/R itself) does not fall under the GNU General Public License.
|
||||
-----------------------------------------------------------------------*/
|
||||
-->begin
|
||||
using System;
|
||||
using System.IO;
|
||||
using System.Collections;
|
||||
|
||||
-->namespace
|
||||
|
||||
public class Token {
|
||||
public int kind; // token kind
|
||||
public int pos; // token position in bytes in the source text (starting at 0)
|
||||
public int charPos; // token position in characters in the source text (starting at 0)
|
||||
public int col; // token column (starting at 1)
|
||||
public int line; // token line (starting at 1)
|
||||
public string val; // token value
|
||||
public Token next; // ML 2005-03-11 Tokens are kept in linked list
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------------
|
||||
// Buffer
|
||||
//-----------------------------------------------------------------------------------
|
||||
public class Buffer {
|
||||
// This Buffer supports the following cases:
|
||||
// 1) seekable stream (file)
|
||||
// a) whole stream in buffer
|
||||
// b) part of stream in buffer
|
||||
// 2) non seekable stream (network, console)
|
||||
|
||||
public const int EOF = char.MaxValue + 1;
|
||||
const int MIN_BUFFER_LENGTH = 1024; // 1KB
|
||||
const int MAX_BUFFER_LENGTH = MIN_BUFFER_LENGTH * 64; // 64KB
|
||||
byte[] buf; // input buffer
|
||||
int bufStart; // position of first byte in buffer relative to input stream
|
||||
int bufLen; // length of buffer
|
||||
int fileLen; // length of input stream (may change if the stream is no file)
|
||||
int bufPos; // current position in buffer
|
||||
Stream stream; // input stream (seekable)
|
||||
bool isUserStream; // was the stream opened by the user?
|
||||
|
||||
public Buffer (Stream s, bool isUserStream) {
|
||||
stream = s; this.isUserStream = isUserStream;
|
||||
|
||||
if (stream.CanSeek) {
|
||||
fileLen = (int) stream.Length;
|
||||
bufLen = Math.Min(fileLen, MAX_BUFFER_LENGTH);
|
||||
bufStart = Int32.MaxValue; // nothing in the buffer so far
|
||||
} else {
|
||||
fileLen = bufLen = bufStart = 0;
|
||||
}
|
||||
|
||||
buf = new byte[(bufLen>0) ? bufLen : MIN_BUFFER_LENGTH];
|
||||
if (fileLen > 0) Pos = 0; // setup buffer to position 0 (start)
|
||||
else bufPos = 0; // index 0 is already after the file, thus Pos = 0 is invalid
|
||||
if (bufLen == fileLen && stream.CanSeek) Close();
|
||||
}
|
||||
|
||||
protected Buffer(Buffer b) { // called in UTF8Buffer constructor
|
||||
buf = b.buf;
|
||||
bufStart = b.bufStart;
|
||||
bufLen = b.bufLen;
|
||||
fileLen = b.fileLen;
|
||||
bufPos = b.bufPos;
|
||||
stream = b.stream;
|
||||
// keep destructor from closing the stream
|
||||
b.stream = null;
|
||||
isUserStream = b.isUserStream;
|
||||
}
|
||||
|
||||
~Buffer() { Close(); }
|
||||
|
||||
protected void Close() {
|
||||
if (!isUserStream && stream != null) {
|
||||
stream.Close();
|
||||
stream = null;
|
||||
}
|
||||
}
|
||||
|
||||
public virtual int Read () {
|
||||
if (bufPos < bufLen) {
|
||||
return buf[bufPos++];
|
||||
} else if (Pos < fileLen) {
|
||||
Pos = Pos; // shift buffer start to Pos
|
||||
return buf[bufPos++];
|
||||
} else if (stream != null && !stream.CanSeek && ReadNextStreamChunk() > 0) {
|
||||
return buf[bufPos++];
|
||||
} else {
|
||||
return EOF;
|
||||
}
|
||||
}
|
||||
|
||||
public int Peek () {
|
||||
int curPos = Pos;
|
||||
int ch = Read();
|
||||
Pos = curPos;
|
||||
return ch;
|
||||
}
|
||||
|
||||
// beg .. begin, zero-based, inclusive, in byte
|
||||
// end .. end, zero-based, exclusive, in byte
|
||||
public string GetString (int beg, int end) {
|
||||
int len = 0;
|
||||
char[] buf = new char[end - beg];
|
||||
int oldPos = Pos;
|
||||
Pos = beg;
|
||||
while (Pos < end) buf[len++] = (char) Read();
|
||||
Pos = oldPos;
|
||||
return new String(buf, 0, len);
|
||||
}
|
||||
|
||||
public int Pos {
|
||||
get { return bufPos + bufStart; }
|
||||
set {
|
||||
if (value >= fileLen && stream != null && !stream.CanSeek) {
|
||||
// Wanted position is after buffer and the stream
|
||||
// is not seek-able e.g. network or console,
|
||||
// thus we have to read the stream manually till
|
||||
// the wanted position is in sight.
|
||||
while (value >= fileLen && ReadNextStreamChunk() > 0);
|
||||
}
|
||||
|
||||
if (value < 0 || value > fileLen) {
|
||||
throw new FatalError("buffer out of bounds access, position: " + value);
|
||||
}
|
||||
|
||||
if (value >= bufStart && value < bufStart + bufLen) { // already in buffer
|
||||
bufPos = value - bufStart;
|
||||
} else if (stream != null) { // must be swapped in
|
||||
stream.Seek(value, SeekOrigin.Begin);
|
||||
bufLen = stream.Read(buf, 0, buf.Length);
|
||||
bufStart = value; bufPos = 0;
|
||||
} else {
|
||||
// set the position to the end of the file, Pos will return fileLen.
|
||||
bufPos = fileLen - bufStart;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Read the next chunk of bytes from the stream, increases the buffer
|
||||
// if needed and updates the fields fileLen and bufLen.
|
||||
// Returns the number of bytes read.
|
||||
private int ReadNextStreamChunk() {
|
||||
int free = buf.Length - bufLen;
|
||||
if (free == 0) {
|
||||
// in the case of a growing input stream
|
||||
// we can neither seek in the stream, nor can we
|
||||
// foresee the maximum length, thus we must adapt
|
||||
// the buffer size on demand.
|
||||
byte[] newBuf = new byte[bufLen * 2];
|
||||
Array.Copy(buf, newBuf, bufLen);
|
||||
buf = newBuf;
|
||||
free = bufLen;
|
||||
}
|
||||
int read = stream.Read(buf, bufLen, free);
|
||||
if (read > 0) {
|
||||
fileLen = bufLen = (bufLen + read);
|
||||
return read;
|
||||
}
|
||||
// end of stream reached
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------------
|
||||
// UTF8Buffer
|
||||
//-----------------------------------------------------------------------------------
|
||||
public class UTF8Buffer: Buffer {
|
||||
public UTF8Buffer(Buffer b): base(b) {}
|
||||
|
||||
public override int Read() {
|
||||
int ch;
|
||||
do {
|
||||
ch = base.Read();
|
||||
// until we find a utf8 start (0xxxxxxx or 11xxxxxx)
|
||||
} while ((ch >= 128) && ((ch & 0xC0) != 0xC0) && (ch != EOF));
|
||||
if (ch < 128 || ch == EOF) {
|
||||
// nothing to do, first 127 chars are the same in ascii and utf8
|
||||
// 0xxxxxxx or end of file character
|
||||
} else if ((ch & 0xF0) == 0xF0) {
|
||||
// 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
|
||||
int c1 = ch & 0x07; ch = base.Read();
|
||||
int c2 = ch & 0x3F; ch = base.Read();
|
||||
int c3 = ch & 0x3F; ch = base.Read();
|
||||
int c4 = ch & 0x3F;
|
||||
ch = (((((c1 << 6) | c2) << 6) | c3) << 6) | c4;
|
||||
} else if ((ch & 0xE0) == 0xE0) {
|
||||
// 1110xxxx 10xxxxxx 10xxxxxx
|
||||
int c1 = ch & 0x0F; ch = base.Read();
|
||||
int c2 = ch & 0x3F; ch = base.Read();
|
||||
int c3 = ch & 0x3F;
|
||||
ch = (((c1 << 6) | c2) << 6) | c3;
|
||||
} else if ((ch & 0xC0) == 0xC0) {
|
||||
// 110xxxxx 10xxxxxx
|
||||
int c1 = ch & 0x1F; ch = base.Read();
|
||||
int c2 = ch & 0x3F;
|
||||
ch = (c1 << 6) | c2;
|
||||
}
|
||||
return ch;
|
||||
}
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------------
|
||||
// Scanner
|
||||
//-----------------------------------------------------------------------------------
|
||||
public class Scanner {
|
||||
const char EOL = '\n';
|
||||
const int eofSym = 0; /* pdt */
|
||||
-->declarations
|
||||
|
||||
public Buffer buffer; // scanner buffer
|
||||
|
||||
Token t; // current token
|
||||
int ch; // current input character
|
||||
int pos; // byte position of current character
|
||||
int charPos; // position by unicode characters starting with 0
|
||||
int col; // column number of current character
|
||||
int line; // line number of current character
|
||||
int oldEols; // EOLs that appeared in a comment;
|
||||
static readonly Hashtable start; // maps first token character to start state
|
||||
|
||||
Token tokens; // list of tokens already peeked (first token is a dummy)
|
||||
Token pt; // current peek token
|
||||
|
||||
char[] tval = new char[128]; // text of current token
|
||||
int tlen; // length of current token
|
||||
|
||||
static Scanner() {
|
||||
start = new Hashtable(128);
|
||||
-->initialization
|
||||
}
|
||||
|
||||
public Scanner (string fileName) {
|
||||
try {
|
||||
Stream stream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
|
||||
buffer = new Buffer(stream, false);
|
||||
Init();
|
||||
} catch (IOException) {
|
||||
throw new FatalError("Cannot open file " + fileName);
|
||||
}
|
||||
}
|
||||
|
||||
public Scanner (Stream s) {
|
||||
buffer = new Buffer(s, true);
|
||||
Init();
|
||||
}
|
||||
|
||||
void Init() {
|
||||
pos = -1; line = 1; col = 0; charPos = -1;
|
||||
oldEols = 0;
|
||||
NextCh();
|
||||
if (ch == 0xEF) { // check optional byte order mark for UTF-8
|
||||
NextCh(); int ch1 = ch;
|
||||
NextCh(); int ch2 = ch;
|
||||
if (ch1 != 0xBB || ch2 != 0xBF) {
|
||||
throw new FatalError(String.Format("illegal byte order mark: EF {0,2:X} {1,2:X}", ch1, ch2));
|
||||
}
|
||||
buffer = new UTF8Buffer(buffer); col = 0; charPos = -1;
|
||||
NextCh();
|
||||
}
|
||||
pt = tokens = new Token(); // first token is a dummy
|
||||
}
|
||||
|
||||
void NextCh() {
|
||||
if (oldEols > 0) { ch = EOL; oldEols--; }
|
||||
else {
|
||||
pos = buffer.Pos;
|
||||
// buffer reads unicode chars, if UTF8 has been detected
|
||||
ch = buffer.Read(); col++; charPos++;
|
||||
// replace isolated '\r' by '\n' in order to make
|
||||
// eol handling uniform across Windows, Unix and Mac
|
||||
if (ch == '\r' && buffer.Peek() != '\n') ch = EOL;
|
||||
if (ch == EOL) { line++; col = 0; }
|
||||
}
|
||||
-->casing1
|
||||
}
|
||||
|
||||
void AddCh() {
|
||||
if (tlen >= tval.Length) {
|
||||
char[] newBuf = new char[2 * tval.Length];
|
||||
Array.Copy(tval, 0, newBuf, 0, tval.Length);
|
||||
tval = newBuf;
|
||||
}
|
||||
if (ch != Buffer.EOF) {
|
||||
-->casing2
|
||||
NextCh();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
-->comments
|
||||
|
||||
void CheckLiteral() {
|
||||
-->literals
|
||||
}
|
||||
|
||||
Token NextToken() {
|
||||
while (ch == ' ' ||
|
||||
-->scan1
|
||||
) NextCh();
|
||||
-->scan2
|
||||
int recKind = noSym;
|
||||
int recEnd = pos;
|
||||
t = new Token();
|
||||
t.pos = pos; t.col = col; t.line = line; t.charPos = charPos;
|
||||
int state;
|
||||
if (start.ContainsKey(ch)) { state = (int) start[ch]; }
|
||||
else { state = 0; }
|
||||
tlen = 0; AddCh();
|
||||
|
||||
switch (state) {
|
||||
case -1: { t.kind = eofSym; break; } // NextCh already done
|
||||
case 0: {
|
||||
if (recKind != noSym) {
|
||||
tlen = recEnd - t.pos;
|
||||
SetScannerBehindT();
|
||||
}
|
||||
t.kind = recKind; break;
|
||||
} // NextCh already done
|
||||
-->scan3
|
||||
}
|
||||
t.val = new String(tval, 0, tlen);
|
||||
return t;
|
||||
}
|
||||
|
||||
private void SetScannerBehindT() {
|
||||
buffer.Pos = t.pos;
|
||||
NextCh();
|
||||
line = t.line; col = t.col; charPos = t.charPos;
|
||||
for (int i = 0; i < tlen; i++) NextCh();
|
||||
}
|
||||
|
||||
// get the next token (possibly a token already seen during peeking)
|
||||
public Token Scan () {
|
||||
if (tokens.next == null) {
|
||||
return NextToken();
|
||||
} else {
|
||||
pt = tokens = tokens.next;
|
||||
return tokens;
|
||||
}
|
||||
}
|
||||
|
||||
// peek for the next token, ignore pragmas
|
||||
public Token Peek () {
|
||||
do {
|
||||
if (pt.next == null) {
|
||||
pt.next = NextToken();
|
||||
}
|
||||
pt = pt.next;
|
||||
} while (pt.kind > maxT); // skip pragmas
|
||||
|
||||
return pt;
|
||||
}
|
||||
|
||||
// make sure that peeking starts at the current scan position
|
||||
public void ResetPeek () { pt = tokens; }
|
||||
|
||||
} // end Scanner
|
||||
Loading…
Reference in New Issue