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Fixed handling of defined() in expression evaluator.

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This commit is contained in:
Doug Schaefer 2004-06-16 13:51:55 +00:00
parent 2164ad4e15
commit a259c14511
2 changed files with 16 additions and 3 deletions
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3
core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/Scanner2Test.java
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@ -878,7 +878,8 @@ public class Scanner2Test extends BaseScanner2Test
try try
{ {
validateEOF(); validateEOF();
fail(EXPECTED_FAILURE); // These are no longer scanner exceptions, the are simply ignored.
//fail(EXPECTED_FAILURE);
} }
catch (ScannerException se) catch (ScannerException se)
{ {

16
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner2/ExpressionEvaluator.java
View file

@ -241,7 +241,7 @@ public class ExpressionEvaluator {
int limit = bufferLimit[bufferStackPos]; int limit = bufferLimit[bufferStackPos];
// check first character // check first character
int c = buffer[++bufferPos[bufferStackPos]]; char c = buffer[++bufferPos[bufferStackPos]];
if (!((c >= 'A' && c <= 'Z') || c == '_' || (c >= 'a' && c <= 'z'))) { if (!((c >= 'A' && c <= 'Z') || c == '_' || (c >= 'a' && c <= 'z'))) {
throw new EvalException("illegal identifier in defined()"); throw new EvalException("illegal identifier in defined()");
} }
@ -250,12 +250,14 @@ public class ExpressionEvaluator {
int idstart = bufferPos[bufferStackPos]; int idstart = bufferPos[bufferStackPos];
int idlen = 1; int idlen = 1;
while (++bufferPos[bufferStackPos] < limit) { while (++bufferPos[bufferStackPos] < limit) {
if ((c >= 'A' && c <= 'Z') || c == '_' || (c >= 'a' && c <= 'z') || (c >= '0' || c <= '9')) { c = buffer[bufferPos[bufferStackPos]];
if ((c >= 'A' && c <= 'Z') || c == '_' || (c >= 'a' && c <= 'z') || (c >= '0' && c <= '9')) {
++idlen; ++idlen;
continue; continue;
} else } else
break; break;
} }
--bufferPos[bufferStackPos];
// consume to the closing paren; // consume to the closing paren;
while (true) { while (true) {
@ -286,6 +288,8 @@ public class ExpressionEvaluator {
return value; return value;
} }
private static char[] _defined = "defined".toCharArray();
private void nextToken() throws EvalException { private void nextToken() throws EvalException {
contextLoop: contextLoop:
while (bufferStackPos >= 0) { while (bufferStackPos >= 0) {
@ -374,6 +378,14 @@ public class ExpressionEvaluator {
--bufferPos[bufferStackPos]; --bufferPos[bufferStackPos];
// Check for defined(
pos = bufferPos[bufferStackPos];
if (pos + 1 < limit && buffer[pos + 1] == '('
&& CharArrayUtils.equals(buffer, start, len, _defined)) {
tokenType = t_defined;
return;
}
// Check for macro expansion // Check for macro expansion
Object expObject = null; Object expObject = null;
if (bufferData[bufferStackPos] instanceof FunctionStyleMacro.Expansion) { if (bufferData[bufferStackPos] instanceof FunctionStyleMacro.Expansion) {