use of japa.parser.ast.expr.Expression in project japid42 by branaway.
the class JavaSyntaxTool method parseNamedArgs.
/**
*
* @param line
* @return list of named args if all the args are named; empty list if none
* is named; or an exception is thrown if the arg list is not valid
* or named and un-named are mixed
*
*/
public static List<NamedArg> parseNamedArgs(String line) {
final List<NamedArg> ret = new ArrayList<NamedArg>();
if (line == null || line.trim().length() == 0)
return ret;
line = line.trim();
// if (line.startsWith("(")) {
// if (line.endsWith(")"))
// line = line.substring(1, line.length() - 1);
// else
// throw new RuntimeException("no closing ')' in arg expression: "
// + line);
// }
String cl = String.format(classTempForArgs, line);
final String finalLine = line;
try {
CompilationUnit cu = parse(cl);
VoidVisitorAdapter visitor = new VoidVisitorAdapter() {
boolean hasNamed = false;
boolean hasUnNamed = false;
@Override
public void visit(MethodCallExpr n, Object arg) {
List<Expression> args = n.getArgs();
// api issue: args can be null in case of empty arg list
if (args != null)
for (Expression expr : args) {
if (expr instanceof AssignExpr) {
if (hasUnNamed)
throw new RuntimeException("the line has mixed named and un-named arg list. It's not valid in Japid tag invocation. It must be all-or-none.: " + finalLine);
hasNamed = true;
AssignExpr ae = (AssignExpr) expr;
NamedArg na = new NamedArg(ae.getTarget(), ae.getValue());
ret.add(na);
} else {
if (hasNamed)
throw new RuntimeException("the line has mixed named and un-named arg list. It's not valid in Japid tag invocation. It must be all-or-none.: " + finalLine);
hasUnNamed = true;
}
}
}
};
cu.accept(visitor, null);
} catch (ParseException e) {
throw new RuntimeException("the line does not seem to be a valid arg list: " + line + ". ");
}
return ret;
}
use of japa.parser.ast.expr.Expression in project japid42 by branaway.
the class JavaSyntaxTool method parseArgs.
// XXX this method does not properly parse thingsl like A<t> a
// it does not detect the error
@SuppressWarnings("unchecked")
public static List<String> parseArgs(String line) {
final List<String> ret = new ArrayList<String>();
if (line == null || line.trim().length() == 0)
return ret;
@SuppressWarnings("rawtypes") VoidVisitorAdapter visitor = new VoidVisitorAdapter() {
@Override
public void visit(MethodCallExpr n, Object arg) {
List<Expression> args = n.getArgs();
// api issue: args can be null in case of empty arg list
if (args != null)
for (Expression e : args) {
ret.add(e.toString());
}
}
};
line = line.trim();
if (line.startsWith("(")) {
// perhaps it's in the form of (...)
String cl = String.format(classTempForArgsNoParenthesis, line);
try {
CompilationUnit cu = parse(cl);
cu.accept(visitor, null);
return ret;
} catch (ParseException e) {
// perhaps not really (...). fall through
}
}
String cl = String.format(classTempForArgs, line);
try {
CompilationUnit cu = parse(cl);
cu.accept(visitor, null);
} catch (ParseException e) {
throw new RuntimeException("the line does not seem to be a valid arg list: " + line);
}
return ret;
}
use of japa.parser.ast.expr.Expression in project Japid by branaway.
the class JavaSyntaxTool method parseArgs.
// XXX this method does not properly parse thingsl like A<t> a
// it does not detect the error
@SuppressWarnings("unchecked")
public static List<String> parseArgs(String line) {
final List<String> ret = new ArrayList<String>();
if (line == null || line.trim().length() == 0)
return ret;
@SuppressWarnings("rawtypes") VoidVisitorAdapter visitor = new VoidVisitorAdapter() {
@Override
public void visit(MethodCallExpr n, Object arg) {
List<Expression> args = n.getArgs();
// api issue: args can be null in case of empty arg list
if (args != null)
for (Expression e : args) {
ret.add(e.toString());
}
}
};
line = line.trim();
if (line.startsWith("(")) {
// perhaps it's in the form of (...)
String cl = String.format(classTempForArgsNoParenthesis, line);
try {
CompilationUnit cu = parse(cl);
cu.accept(visitor, null);
return ret;
} catch (ParseException e) {
// perhaps not really (...). fall through
}
}
String cl = String.format(classTempForArgs, line);
try {
CompilationUnit cu = parse(cl);
cu.accept(visitor, null);
} catch (ParseException e) {
throw new RuntimeException("the line does not seem to be a valid arg list: " + line);
}
return ret;
}
use of japa.parser.ast.expr.Expression in project Japid by branaway.
the class JavaSyntaxTool method parseNamedArgs.
/**
*
* @param line
* @return list of named args if all the args are named; empty list if none
* is named; or an exception is thrown if the arg list is not valid
* or named and un-named are mixed
*
*/
public static List<NamedArg> parseNamedArgs(String line) {
final List<NamedArg> ret = new ArrayList<NamedArg>();
if (line == null || line.trim().length() == 0)
return ret;
line = line.trim();
// if (line.startsWith("(")) {
// if (line.endsWith(")"))
// line = line.substring(1, line.length() - 1);
// else
// throw new RuntimeException("no closing ')' in arg expression: "
// + line);
// }
String cl = String.format(classTempForArgs, line);
final String finalLine = line;
try {
CompilationUnit cu = parse(cl);
VoidVisitorAdapter visitor = new VoidVisitorAdapter() {
boolean hasNamed = false;
boolean hasUnNamed = false;
@Override
public void visit(MethodCallExpr n, Object arg) {
List<Expression> args = n.getArgs();
// api issue: args can be null in case of empty arg list
if (args != null)
for (Expression expr : args) {
if (expr instanceof AssignExpr) {
if (hasUnNamed)
throw new RuntimeException("the line has mixed named and un-named arg list. It's not valid in Japid tag invocation. It must be all-or-none.: " + finalLine);
hasNamed = true;
AssignExpr ae = (AssignExpr) expr;
NamedArg na = new NamedArg(ae.getTarget(), ae.getValue());
ret.add(na);
} else {
if (hasNamed)
throw new RuntimeException("the line has mixed named and un-named arg list. It's not valid in Japid tag invocation. It must be all-or-none.: " + finalLine);
hasUnNamed = true;
}
}
}
};
cu.accept(visitor, null);
} catch (ParseException e) {
throw new RuntimeException("the line does not seem to be a valid arg list: " + line + ". ");
}
return ret;
}
use of japa.parser.ast.expr.Expression in project enumerable by hraberg.
the class LambdaExpressionTrees method parseExpression.
public static Expression parseExpression(String expression) {
try {
Class<?> parserClass = Class.forName("japa.parser.ASTParser");
Constructor<?> ctor = parserClass.getConstructor(Reader.class);
ctor.setAccessible(true);
Object parser = ctor.newInstance(new StringReader(expression));
Method method = parserClass.getMethod("Expression");
method.setAccessible(true);
return (Expression) method.invoke(parser);
} catch (Exception e) {
throw uncheck(e);
}
}
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