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gw.internal.gosu.parser.GosuProgramParser Maven / Gradle / Ivy
/*
* Copyright 2014 Guidewire Software, Inc.
*/
package gw.internal.gosu.parser;
import gw.config.CommonServices;
import gw.internal.gosu.parser.expressions.EvalExpression;
import gw.internal.gosu.template.TemplateTokenizerInstructor;
import gw.lang.parser.ICapturedSymbol;
import gw.lang.parser.IFileContext;
import gw.lang.parser.IGosuProgramParser;
import gw.lang.parser.IParseResult;
import gw.lang.parser.IParseTree;
import gw.lang.parser.IParsedElement;
import gw.lang.parser.ISymbolTable;
import gw.lang.parser.ITypeUsesMap;
import gw.lang.parser.ParseResult;
import gw.lang.parser.ParserOptions;
import gw.lang.parser.exceptions.ParseResultsException;
import gw.lang.parser.statements.IClassStatement;
import gw.lang.reflect.IType;
import gw.lang.reflect.TypeSystem;
import gw.lang.reflect.gs.ClassType;
import gw.lang.reflect.gs.GosuClassTypeLoader;
import gw.lang.reflect.gs.IGosuClass;
import gw.lang.reflect.gs.IGosuProgram;
import gw.lang.reflect.gs.StringSourceFileHandle;
import gw.lang.reflect.module.IModule;
import gw.util.GosuStringUtil;
import java.util.List;
/**
*/
public class GosuProgramParser implements IGosuProgramParser
{
private static int g_iIndex;
public IParseResult parseEval( String strSource, List captured, IType enclosingClass, IParsedElement ctxElem, ISymbolTable extSyms )
{
TypeSystem.lock();
try
{
IGosuProgramInternal program;
String typeName = makeEvalKey( strSource, enclosingClass, ctxElem );
if( ctxElem instanceof EvalExpression )
{
program = ((EvalExpression)ctxElem).getCachedProgram( typeName );
if( program != null )
{
program.isValid();
return new ParseResult( program );
}
}
StringSourceFileHandle sfh = new StringSourceFileHandle( typeName, strSource, false, ClassType.Eval );
if( enclosingClass != null )
{
sfh.setParentType( enclosingClass.getName() );
}
ITypeUsesMap typeUsedMap = getTypeUsedMapFrom( ctxElem );
if( typeUsedMap != null )
{
sfh.setTypeUsesMap( typeUsedMap );
}
if( ctxElem instanceof EvalExpression )
{
sfh.setCapturedTypeVars( ((EvalExpression)ctxElem).getCapturedTypeVars() );
}
program = (IGosuProgramInternal)GosuClassTypeLoader.getDefaultClassLoader().makeNewClass( sfh, null );
program.setEnclosingEvalExpression( ctxElem );
if( captured != null )
{
for( ICapturedSymbol sym : captured )
{
program.getParseInfo().addCapturedSymbolSilent( sym );
}
}
sfh.setExternalSymbols( extSyms );
program.isValid();
if( ctxElem instanceof EvalExpression )
{
((EvalExpression)ctxElem).cacheProgram( typeName, program );
}
return new ParseResult( program );
}
finally
{
TypeSystem.unlock();
}
}
public IParseResult parseRuntimeExpr( String typeName, String strSource, IType enclosingClass, ISymbolTable extSyms, IParseTree ctxElem )
{
TypeSystem.lock();
try
{
StringSourceFileHandle sfh = new StringSourceFileHandle( typeName, strSource, false, ClassType.Eval );
sfh.setParentType( enclosingClass.getName() );
if( enclosingClass instanceof IGosuClass )
{
ITypeUsesMap typeUsedMap = ((IGosuClass)enclosingClass).getTypeUsesMap();
if( typeUsedMap != null )
{
sfh.setTypeUsesMap( typeUsedMap );
}
}
IGosuProgramInternal program = (IGosuProgramInternal)GosuClassTypeLoader.getDefaultClassLoader().makeNewClass( sfh, null );
if( ctxElem != null )
{
program.setEnclosingEvalExpression( ctxElem.getParsedElement() );
}
sfh.setExternalSymbols( extSyms );
program.isValid();
return new ParseResult( program );
}
finally
{
TypeSystem.unlock();
}
}
public static String makeEvalKey( String strSource, IType enclosingClass, IParsedElement ctxElem )
{
return makeEvalKey( strSource, enclosingClass, getEvalExprLocationOffset( ctxElem ) );
}
public static String makeEvalKey( String source, IType enclosingClass, int offset )
{
if( enclosingClass == null )
{
return "toplevel" + '.' + IGosuProgram.NAME_PREFIX + "eval_0_" + GosuStringUtil.getSHA1String( source );
}
else
{
return enclosingClass.getName() + '.' + IGosuProgram.NAME_PREFIX + "eval_" + offset + "_" + GosuStringUtil.getSHA1String( source );
}
}
private ITypeUsesMap getTypeUsedMapFrom( IParsedElement ctxElem ) {
if( ctxElem instanceof EvalExpression ) {
return ((EvalExpression)ctxElem).getTypeUsesMap();
}
IGosuClass gsClass = ctxElem.getGosuClass();
if( gsClass != null ) {
return ((IGosuClass)TypeLord.getOuterMostEnclosingClass( gsClass )).getTypeUsesMap().copy();
}
else
{
return new TypeUsesMap();
}
}
private static int getEvalExprLocationOffset( IParsedElement evalExpr ) {
if( evalExpr == null )
{
return getIndex();
}
IParseTree location = evalExpr.getLocation();
return location != null ? location.getOffset() : getIndex();
}
@Override
public IParseResult parseExpressionOnly( String strSource, ISymbolTable symTable, ParserOptions options ) throws ParseResultsException
{
return parseExpressionOrProgram( strSource, symTable, options );
}
@Override
public IParseResult parseProgramOnly( String strSource, ISymbolTable symTable, ParserOptions options ) throws ParseResultsException
{
return parseExpressionOrProgram( strSource, symTable, options );
}
@Override
public IParseResult parseExpressionOrProgram( String strSource, ISymbolTable symTable, ParserOptions options ) throws ParseResultsException
{
TypeSystem.lock();
try
{
int index = getIndex();
String name = null;
IFileContext fileContext = options.getFileContext();
if( fileContext != null )
{
name = fileContext.getClassName();
}
if( name == null )
{
name = IGosuProgram.PACKAGE + '.' + IGosuProgram.NAME_PREFIX + index;
}
if( fileContext != null && fileContext.getContextString() != null )
{
name += "_" + fileContext.getContextString();
}
StringSourceFileHandle sfh = new StringSourceFileHandle( name, strSource, false, ClassType.Program );
if( fileContext != null )
{
sfh.setFilePath(fileContext.getFilePath());
}
sfh.setParentType( options.getEnclosingType() );
sfh.setTypeUsesMap( options.getTypeUsesMap() );
IGosuProgramInternal program = makeProgramClass( symTable, sfh );
if( options.getParser() != null )
{
program.setEditorParser( (GosuParser)options.getParser() );
program.setCreateEditorParser( options.getParser().isEditorParser() );
}
program.setGenRootExprAccess( options.isBGenRootExprAccess() );
program.setExpectedReturnType( options.getExpectedType() );
program.setTokenizerInstructor( options.getTi() );
program.setSuperType( options.getSuperType() );
program.setAdditionalDFSDecls( options.getAdditionalDFSDecls() );
program.setStatementsOnly( options.isStatementsOnly() );
program.setThrowaway( options.isThrowawayProgram() );
program.setAnonymous( program.isAnonymous() || options.isAnonymous() );
program.setAllowUses( options.allowUses() );
program.setCtxInferenceMgr( options.getCtxInferenceMgr() );
if( options.getScriptPartId() != null )
{
program.setContextType( options.getScriptPartId().getContainingType() );
}
if( !program.isValid() )
{
throw program.getParseResultsException();
}
if( options.getParser() != null )
{
try
{
IClassStatement classStatement = program.getClassStatement();
IParsedElement parent = classStatement.getParent();
IParsedElement pe = parent != null ? parent : classStatement;
((GosuParser)options.getParser()).verifyParsedElement(pe);
}
catch( ParseResultsException pre )
{
program.setParseResultsException( pre );
}
}
return new ParseResult( program );
}
finally
{
TypeSystem.unlock();
}
}
public IParseResult parseTemplate( String strSource, ISymbolTable symTable, ParserOptions options ) throws ParseResultsException
{
TypeSystem.lock();
try
{
int index = getIndex();
String name = null;
if( options.getFileContext() != null )
{
name = options.getFileContext().getClassName();
}
if( name == null )
{
name = IGosuProgram.PACKAGE + '.' + IGosuProgram.NAME_PREFIX + index;
}
if( options.getFileContext() != null && options.getFileContext().getContextString() != null )
{
name += "_" + options.getFileContext().getContextString();
}
StringSourceFileHandle sfh = new StringSourceFileHandle( name, strSource, false, ClassType.Template );
if( options.getFileContext() != null )
{
sfh.setFilePath(options.getFileContext().getFilePath());
}
sfh.setTypeUsesMap( options.getTypeUsesMap() );
IGosuProgramInternal program = makeProgramClass( symTable, sfh );
if( options.getParser() != null )
{
program.setEditorParser( (GosuParser)options.getParser() );
program.setCreateEditorParser( options.getParser().isEditorParser() );
}
program.setGenRootExprAccess( options.isBGenRootExprAccess() );
program.setExpectedReturnType( options.getExpectedType() );
program.setTokenizerInstructor( options.getTi() );
program.setSuperType( options.getSuperType() );
program.setAdditionalDFSDecls( options.getAdditionalDFSDecls() );
program.setStatementsOnly( options.isStatementsOnly() );
program.setThrowaway( options.isThrowawayProgram() );
program.setAllowUses( options.allowUses() );
program.setCtxInferenceMgr( options.getCtxInferenceMgr() );
if( options.getScriptPartId() != null )
{
program.setContextType( options.getScriptPartId().getContainingType() );
}
program.setTokenizerInstructor( new TemplateTokenizerInstructor( options.getParser().getTokenizer() ) );
if( !program.isValid() )
{
throw program.getParseResultsException();
}
if( options.getParser() != null )
{
try
{
IParsedElement pe = program.getClassStatement().getParent();
pe = pe == null ? program.getClassStatement() : pe;
((GosuParser)options.getParser()).verifyParsedElement( pe );
}
catch( ParseResultsException pre )
{
program.setParseResultsException( pre );
}
}
return new ParseResult( program );
}
finally
{
TypeSystem.unlock();
}
}
private IGosuProgramInternal makeProgramClass( ISymbolTable symTable, StringSourceFileHandle sfh ) {
IModule module = TypeSystem.getCurrentModule();
module = module == null ? TypeSystem.getGlobalModule() : module;
GosuClassTypeLoader defaultClassLoader = CommonServices.getTypeSystem().getTypeLoader( GosuClassTypeLoader.class, module );
//GosuClassTypeLoader defaultClassLoader = GosuClassTypeLoader.getDefaultClassLoader();
return (IGosuProgramInternal) defaultClassLoader.makeNewClass(sfh, symTable);
}
synchronized static private int getIndex()
{
return g_iIndex++;
}
}
