protected CTerminal ReadTerminal() {
CBaseToken tok = GetCurrentToken();
if (tok.GetKeyword() == CFPacKeywordList.C) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CStringTerminal(cs);
StepNext();
return term;
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'C'");
return null;
}
} else if (tok.GetKeyword() == CFPacKeywordList.C) {
String cs = tok.GetValue();
CTerminal term = new CStringTerminal(cs);
StepNext();
return term;
} else if (tok.GetKeyword() == CFPacKeywordList.P) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CNumberTerminal(cs);
StepNext();
return term;
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'P'");
return null;
}
} else if (tok.GetKeyword() == CFPacKeywordList.F) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CNumberTerminal(cs);
StepNext();
return term;
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'F'");
return null;
}
} else if (tok.GetKeyword() == CFPacKeywordList.X) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CNumberTerminal("0x" + cs);
StepNext();
return term;
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'X'");
return null;
}
} else if (tok.GetType() == CTokenType.NUMBER) {
CAddressTerminal term = new CAddressTerminal(tok.GetValue());
tok = GetNext();
return term;
} else if (tok.GetType() == CTokenType.IDENTIFIER) {
CIdentifier id = ReadIdentifier();
if (id != null) {
CIdentifierTerminal term = new CIdentifierTerminal(id);
return term;
} else {
// ...
}
} else if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CStringTerminal(cs);
StepNext();
return term;
} else {
Transcoder.logError(
tok.getLine(), "Unexpecting token while reading terminal : " + tok.toString());
return null;
}
return null;
}
protected CExpression ReadExpression() {
CBaseToken tok = GetCurrentToken();
CFPacGenericExpression exp = new CFPacGenericExpression(tok.getLine());
boolean bOk = true;
while (bOk) {
tok = GetCurrentToken();
if (tok.GetKeyword() == CFPacKeywordList.P) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CNumberTerminal(cs);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'P'");
return null;
}
tok = GetNext();
} else if (tok.GetKeyword() == CFPacKeywordList.C) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CStringTerminal(cs);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'C'");
return null;
}
tok = GetNext();
} else if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CStringTerminal(cs);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
tok = GetNext();
} else if (tok.GetKeyword() == CFPacKeywordList.X) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CNumberTerminal("0x" + cs);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'X'");
return null;
}
tok = GetNext();
} else if (tok.GetKeyword() == CFPacKeywordList.E) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CStringTerminal(cs);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'E'");
return null;
}
tok = GetNext();
} else if (tok.GetKeyword() == CFPacKeywordList.F) {
tok = GetNext();
if (tok.GetType() == CTokenType.STRING) {
String cs = tok.GetValue();
CTerminal term = new CNumberTerminal(cs);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
} else {
Transcoder.logError(tok.getLine(), "Expecting 'STRING' after 'F'");
return null;
}
tok = GetNext();
} else if (tok.GetKeyword() == CFPacKeywordList.EQ
|| tok.GetKeyword() == CFPacKeywordList.NE
|| tok.GetKeyword() == CFPacKeywordList.GE
|| tok.GetKeyword() == CFPacKeywordList.GT
|| tok.GetKeyword() == CFPacKeywordList.LE
|| tok.GetKeyword() == CFPacKeywordList.LT
|| tok.GetKeyword() == CFPacKeywordList.NUMERIC
|| tok.GetKeyword() == CFPacKeywordList.SPACE) {
exp.SetKeyword(tok.GetKeyword());
tok = GetNext();
} else if (tok.GetType() == CTokenType.NUMBER) {
CTerminal term = new CAddressTerminal(tok.GetValue());
CExpression e = new CTermExpression(tok.getLine(), term);
tok = GetNext();
if (tok.GetType() == CTokenType.PLUS) {
tok = GetNext();
CExpression exp2 = ReadTerminalExpression();
if (exp2 == null) {
Transcoder.logError(tok.getLine(), "Expecting expression after '+'");
return null;
}
CSumExpression sum =
new CSumExpression(tok.getLine(), e, exp2, CSumExpression.CSumType.ADD);
exp.AddTerm(sum);
} else {
exp.AddTerm(e);
}
} else if (tok.GetType() == CTokenType.IDENTIFIER) {
CIdentifier id = new CIdentifier(tok.GetValue());
tok = GetNext();
if (tok.GetType() == CTokenType.MINUS) {
tok = GetNext();
if (tok.GetType() == CTokenType.NUMBER) {
CExpression e = new CTermExpression(0, new CAddressTerminal(tok.GetValue()));
// id.SetSubStringReference(exp, null) ;
CTerminal term = new CIdentifierTerminal(id);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
exp.AddTerm(e);
tok = GetNext();
} else {
Transcoder.logError(
tok.getLine(), "Expecting number instead of token : " + tok.toString());
return null;
}
} else if (tok.GetType() == CTokenType.PLUS) {
tok = GetNext();
CExpression e = ReadTerminalExpression();
if (e == null) {
Transcoder.logError(tok.getLine(), "Expecting expression after '+'");
return null;
}
CSumExpression sum =
new CSumExpression(
tok.getLine(),
new CTermExpression(tok.getLine(), new CIdentifierTerminal(id)),
e,
CSumExpression.CSumType.ADD);
exp.AddTerm(sum);
} else if (tok.GetType() == CTokenType.COMMA) {
CTerminal term = new CIdentifierTerminal(id);
exp.AddTerm(new CTermExpression(tok.getLine(), term));
} else {
Transcoder.logError(tok.getLine(), "Unexpecting token : " + tok.toString());
return null;
}
}
tok = GetCurrentToken();
if (tok.GetType() == CTokenType.COMMA) {
tok = GetNext();
} else {
bOk = false;
}
}
return exp;
}
