Package org.stringtemplate.v4

Interface STWriter

All Known Implementing Classes:

AutoIndentWriter, NoIndentWriter

public interface STWriter

Generic StringTemplate output writer filter.

Literals and the elements of expressions are emitted via write(String). Separators are emitted via writeSeparator(String) because they must be handled specially when wrapping lines (we don't want to wrap in between an element and it's separator).

Field Summary

Fields

Modifier and Type	Field	Description
static int	NO_WRAP

Method Summary

Modifier and Type	Method	Description
int	index()	Return the absolute char index into the output of the char we're about to write.
void	popAnchorPoint()
String	popIndentation()
void	pushAnchorPoint()
void	pushIndentation(String indent)
void	setLineWidth(int lineWidth)
int	write(String str)	Write the string and return how many actual characters were written.
int	write(String str, String wrap)	Same as write, but wrap lines using the indicated string as the wrap character (such as "\n").
int	writeSeparator(String str)	Write a separator.
int	writeWrap(String wrap)	Because we evaluate ST instance by invoking Interpreter.exec(STWriter, InstanceScope) again, we can't pass options in.

Field Detail

NO_WRAP

static final int NO_WRAP

See Also:

Constant Field Values

Method Detail

pushIndentation

void pushIndentation(String indent)

popIndentation

String popIndentation()

pushAnchorPoint

void pushAnchorPoint()

popAnchorPoint

void popAnchorPoint()

setLineWidth

void setLineWidth(int lineWidth)

write

int write(String str)
   throws IOException

Write the string and return how many actual characters were written. With auto-indentation and wrapping, more chars than str.length() can be emitted. No wrapping is done.

Throws:

IOException

write

int write(String str,
          String wrap)
   throws IOException

Same as write, but wrap lines using the indicated string as the wrap character (such as "\n").

Throws:

IOException

writeWrap

int writeWrap(String wrap)
       throws IOException

Because we evaluate ST instance by invoking Interpreter.exec(STWriter, InstanceScope) again, we can't pass options in. So the Bytecode.INSTR_WRITE instruction of an applied template (such as when we wrap in between template applications like <data:{v|[<v>]}; wrap>) we need to write the wrap string before calling Interpreter.exec(org.stringtemplate.v4.STWriter, org.stringtemplate.v4.InstanceScope). We expose just like for the separator. See Interpreter.writeObject(org.stringtemplate.v4.STWriter, org.stringtemplate.v4.InstanceScope, java.lang.Object, java.lang.String[]) where it checks for ST instance. If POJO, Interpreter.writePOJO(org.stringtemplate.v4.STWriter, org.stringtemplate.v4.InstanceScope, java.lang.Object, java.lang.String[]) passes wrap to write(String str, String wrap). Can't pass to Interpreter.exec(org.stringtemplate.v4.STWriter, org.stringtemplate.v4.InstanceScope).

Throws:

IOException

writeSeparator

int writeSeparator(String str)
            throws IOException

Write a separator. Same as write(String) except that a "\n" cannot be inserted before emitting a separator.

Throws:

IOException

index

int index()

Return the absolute char index into the output of the char we're about to write. Returns 0 if no char written yet.