author | wenzelm |
Mon, 01 Mar 2021 23:26:55 +0100 | |
changeset 73345 | 8204f7b53007 |
parent 73344 | f5c147654661 |
child 73358 | 78aa7846e91f |
permissions | -rw-r--r-- |
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/* Title: Tools/jEdit/src/text_structure.scala |
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Author: Makarius |
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Text structure based on Isabelle/Isar outer syntax. |
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*/ |
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package isabelle.jedit |
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import isabelle._ |
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import org.gjt.sp.jedit.indent.{IndentRule, IndentAction} |
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import org.gjt.sp.jedit.textarea.{TextArea, StructureMatcher, Selection} |
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import org.gjt.sp.jedit.buffer.JEditBuffer |
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import org.gjt.sp.jedit.Buffer |
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object Text_Structure |
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{ |
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/* token navigator */ |
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class Navigator(syntax: Outer_Syntax, buffer: JEditBuffer, comments: Boolean) |
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{ |
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val limit: Int = PIDE.options.value.int("jedit_structure_limit") max 0 |
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def iterator(line: Int, lim: Int = limit): Iterator[Text.Info[Token]] = |
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{ |
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val it = Token_Markup.line_token_iterator(syntax, buffer, line, line + lim) |
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if (comments) it.filterNot(_.info.is_space) else it.filter(_.info.is_proper) |
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} |
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def reverse_iterator(line: Int, lim: Int = limit): Iterator[Text.Info[Token]] = |
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{ |
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val it = Token_Markup.line_token_reverse_iterator(syntax, buffer, line, line - lim) |
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if (comments) it.filterNot(_.info.is_space) else it.filter(_.info.is_proper) |
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} |
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} |
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/* indentation */ |
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object Indent_Rule extends IndentRule |
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{ |
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private val keyword_open = Keyword.theory_goal ++ Keyword.proof_open |
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private val keyword_close = Keyword.proof_close |
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def apply(buffer: JEditBuffer, current_line: Int, prev_line0: Int, prev_prev_line0: Int, |
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actions: java.util.List[IndentAction]): Unit = |
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{ |
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Isabelle.buffer_syntax(buffer) match { |
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case Some(syntax) => |
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val keywords = syntax.keywords |
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val nav = new Navigator(syntax, buffer, true) |
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val indent_size = buffer.getIndentSize |
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def line_indent(line: Int): Int = |
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if (line < 0 || line >= buffer.getLineCount) 0 |
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else buffer.getCurrentIndentForLine(line, null) |
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def line_head(line: Int): Option[Text.Info[Token]] = |
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nav.iterator(line, 1).nextOption() |
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def head_is_quasi_command(line: Int): Boolean = |
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line_head(line) match { |
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case None => false |
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case Some(Text.Info(_, tok)) => keywords.is_quasi_command(tok) |
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} |
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val prev_line: Int = |
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Range.inclusive(current_line - 1, 0, -1).find(line => |
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Token_Markup.Line_Context.before(buffer, line).get_context == Scan.Finished && |
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(!Token_Markup.Line_Context.after(buffer, line).structure.improper || |
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Token_Markup.Line_Context.after(buffer, line).structure.blank)) getOrElse -1 |
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def prev_line_command: Option[Token] = |
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nav.reverse_iterator(prev_line, 1). |
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collectFirst({ case Text.Info(_, tok) if tok.is_begin_or_command => tok }) |
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def prev_line_span: Iterator[Token] = |
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nav.reverse_iterator(prev_line, 1).map(_.info).takeWhile(tok => !tok.is_begin_or_command) |
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def prev_span: Iterator[Token] = |
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nav.reverse_iterator(prev_line).map(_.info).takeWhile(tok => !tok.is_begin_or_command) |
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val script_indent: Text.Info[Token] => Int = |
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{ |
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val opt_rendering: Option[JEdit_Rendering] = |
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if (PIDE.options.value.bool("jedit_indent_script")) |
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GUI_Thread.now { |
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(for { |
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text_area <- JEdit_Lib.jedit_text_areas(buffer) |
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doc_view <- Document_View.get(text_area) |
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} yield doc_view.get_rendering).nextOption() |
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} |
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else None |
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val limit = PIDE.options.value.int("jedit_indent_script_limit") |
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(info: Text.Info[Token]) => |
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opt_rendering match { |
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case Some(rendering) if keywords.is_command(info.info, Keyword.prf_script) => |
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(rendering.indentation(info.range) min limit) max 0 |
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case _ => 0 |
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} |
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} |
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def indent_indent(tok: Token): Int = |
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if (keywords.is_command(tok, keyword_open)) indent_size |
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else if (keywords.is_command(tok, keyword_close)) - indent_size |
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else 0 |
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def indent_offset(tok: Token): Int = |
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if (keywords.is_command(tok, Keyword.proof_enclose)) indent_size |
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else 0 |
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def indent_structure: Int = |
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nav.reverse_iterator(current_line - 1).scanLeft((0, false))( |
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{ case ((ind, _), Text.Info(range, tok)) => |
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val ind1 = ind + indent_indent(tok) |
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if (tok.is_begin_or_command && !keywords.is_command(tok, Keyword.prf_script)) { |
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val line = buffer.getLineOfOffset(range.start) |
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line_head(line) match { |
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case Some(info) if info.info == tok => |
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(ind1 + indent_offset(tok) + line_indent(line), true) |
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case _ => (ind1, false) |
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} |
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} |
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else (ind1, false) |
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}).collectFirst({ case (i, true) => i }).getOrElse(0) |
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def indent_brackets: Int = |
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(0 /: prev_line_span)( |
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{ case (i, tok) => |
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if (tok.is_open_bracket) i + indent_size |
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else if (tok.is_close_bracket) i - indent_size |
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else i }) |
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def indent_extra: Int = |
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if (prev_span.exists(keywords.is_quasi_command)) indent_size |
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else 0 |
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val indent = |
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if (Token_Markup.Line_Context.before(buffer, current_line).get_context != Scan.Finished) |
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line_indent(current_line) |
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else if (Token_Markup.Line_Context.after(buffer, current_line).structure.blank) 0 |
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else { |
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line_head(current_line) match { |
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case Some(info) => |
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val tok = info.info |
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if (tok.is_begin || |
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keywords.is_before_command(tok) || |
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keywords.is_command(tok, Keyword.theory)) 0 |
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else if (keywords.is_command(tok, Keyword.proof_enclose)) |
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indent_structure + script_indent(info) - indent_offset(tok) |
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else if (keywords.is_command(tok, Keyword.proof)) |
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(indent_structure + script_indent(info) - indent_offset(tok)) max indent_size |
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else if (tok.is_command) indent_structure - indent_offset(tok) |
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else { |
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prev_line_command match { |
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case None => |
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val extra = |
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(keywords.is_quasi_command(tok), head_is_quasi_command(prev_line)) match { |
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case (true, true) | (false, false) => 0 |
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case (true, false) => - indent_extra |
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case (false, true) => indent_extra |
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} |
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line_indent(prev_line) + indent_brackets + extra - indent_offset(tok) |
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case Some(prev_tok) => |
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indent_structure + indent_brackets + indent_size - indent_offset(tok) - |
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indent_offset(prev_tok) - indent_indent(prev_tok) |
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} |
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} |
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case None => |
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prev_line_command match { |
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case None => |
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val extra = if (head_is_quasi_command(prev_line)) indent_extra else 0 |
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line_indent(prev_line) + indent_brackets + extra |
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case Some(prev_tok) => |
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indent_structure + indent_brackets + indent_size - |
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indent_offset(prev_tok) - indent_indent(prev_tok) |
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} |
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} |
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} |
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actions.clear() |
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actions.add(new IndentAction.AlignOffset(indent max 0)) |
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case None => |
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} |
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} |
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} |
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def line_content(buffer: JEditBuffer, keywords: Keyword.Keywords, |
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range: Text.Range, ctxt: Scan.Line_Context): (List[Token], Scan.Line_Context) = |
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{ |
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val text = JEdit_Lib.get_text(buffer, range).getOrElse("") |
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val (toks, ctxt1) = Token.explode_line(keywords, text, ctxt) |
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val toks1 = toks.filterNot(_.is_space) |
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(toks1, ctxt1) |
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} |
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def split_line_content(buffer: JEditBuffer, keywords: Keyword.Keywords, line: Int, caret: Int) |
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: (List[Token], List[Token]) = |
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{ |
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val line_range = JEdit_Lib.line_range(buffer, line) |
|
66176 | 206 |
val ctxt0 = Token_Markup.Line_Context.before(buffer, line).get_context |
66175 | 207 |
val (toks1, ctxt1) = line_content(buffer, keywords, Text.Range(line_range.start, caret), ctxt0) |
208 |
val (toks2, _) = line_content(buffer, keywords, Text.Range(caret, line_range.stop), ctxt1) |
|
66173 | 209 |
(toks1, toks2) |
210 |
} |
|
211 |
||
63422 | 212 |
|
213 |
/* structure matching */ |
|
214 |
||
215 |
object Matcher extends StructureMatcher |
|
58748 | 216 |
{ |
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private def find_block( |
58752 | 218 |
open: Token => Boolean, |
219 |
close: Token => Boolean, |
|
220 |
reset: Token => Boolean, |
|
58762 | 221 |
restrict: Token => Boolean, |
58754 | 222 |
it: Iterator[Text.Info[Token]]): Option[(Text.Range, Text.Range)] = |
58752 | 223 |
{ |
73344 | 224 |
val range1 = it.next().range |
58762 | 225 |
it.takeWhile(info => !info.info.is_command || restrict(info.info)). |
226 |
scanLeft((range1, 1))( |
|
227 |
{ case ((r, d), Text.Info(range, tok)) => |
|
228 |
if (open(tok)) (range, d + 1) |
|
229 |
else if (close(tok)) (range, d - 1) |
|
230 |
else if (reset(tok)) (range, 0) |
|
231 |
else (r, d) } |
|
232 |
).collectFirst({ case (range2, 0) => (range1, range2) }) |
|
58752 | 233 |
} |
234 |
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private def find_pair(text_area: TextArea): Option[(Text.Range, Text.Range)] = |
58748 | 236 |
{ |
237 |
val buffer = text_area.getBuffer |
|
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val caret_line = text_area.getCaretLine |
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val caret = text_area.getCaretPosition |
58748 | 240 |
|
59074 | 241 |
Isabelle.buffer_syntax(text_area.getBuffer) match { |
66183 | 242 |
case Some(syntax) => |
63424 | 243 |
val keywords = syntax.keywords |
58750 | 244 |
|
66183 | 245 |
val nav = new Navigator(syntax, buffer, false) |
58750 | 246 |
|
58752 | 247 |
def caret_iterator(): Iterator[Text.Info[Token]] = |
63425 | 248 |
nav.iterator(caret_line).dropWhile(info => !info.range.touches(caret)) |
58752 | 249 |
|
63427 | 250 |
def reverse_caret_iterator(): Iterator[Text.Info[Token]] = |
251 |
nav.reverse_iterator(caret_line).dropWhile(info => !info.range.touches(caret)) |
|
58752 | 252 |
|
63425 | 253 |
nav.iterator(caret_line, 1).find(info => info.range.touches(caret)) |
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match { |
63424 | 255 |
case Some(Text.Info(range1, tok)) if keywords.is_command(tok, Keyword.theory_goal) => |
58755 | 256 |
find_block( |
63424 | 257 |
keywords.is_command(_, Keyword.proof_goal), |
258 |
keywords.is_command(_, Keyword.qed), |
|
259 |
keywords.is_command(_, Keyword.qed_global), |
|
58762 | 260 |
t => |
63424 | 261 |
keywords.is_command(t, Keyword.diag) || |
262 |
keywords.is_command(t, Keyword.proof), |
|
58755 | 263 |
caret_iterator()) |
264 |
||
63424 | 265 |
case Some(Text.Info(range1, tok)) if keywords.is_command(tok, Keyword.proof_goal) => |
58755 | 266 |
find_block( |
63424 | 267 |
keywords.is_command(_, Keyword.proof_goal), |
268 |
keywords.is_command(_, Keyword.qed), |
|
58755 | 269 |
_ => false, |
58762 | 270 |
t => |
63424 | 271 |
keywords.is_command(t, Keyword.diag) || |
272 |
keywords.is_command(t, Keyword.proof), |
|
58755 | 273 |
caret_iterator()) |
274 |
||
63424 | 275 |
case Some(Text.Info(range1, tok)) if keywords.is_command(tok, Keyword.qed_global) => |
63427 | 276 |
reverse_caret_iterator().find(info => keywords.is_command(info.info, Keyword.theory)) |
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match { |
58750 | 278 |
case Some(Text.Info(range2, tok)) |
63424 | 279 |
if keywords.is_command(tok, Keyword.theory_goal) => Some((range1, range2)) |
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case _ => None |
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} |
58752 | 282 |
|
63424 | 283 |
case Some(Text.Info(range1, tok)) if keywords.is_command(tok, Keyword.qed) => |
58755 | 284 |
find_block( |
63424 | 285 |
keywords.is_command(_, Keyword.qed), |
58755 | 286 |
t => |
63424 | 287 |
keywords.is_command(t, Keyword.proof_goal) || |
288 |
keywords.is_command(t, Keyword.theory_goal), |
|
58755 | 289 |
_ => false, |
58762 | 290 |
t => |
63424 | 291 |
keywords.is_command(t, Keyword.diag) || |
292 |
keywords.is_command(t, Keyword.proof) || |
|
293 |
keywords.is_command(t, Keyword.theory_goal), |
|
63427 | 294 |
reverse_caret_iterator()) |
58755 | 295 |
|
58752 | 296 |
case Some(Text.Info(range1, tok)) if tok.is_begin => |
58762 | 297 |
find_block(_.is_begin, _.is_end, _ => false, _ => true, caret_iterator()) |
58752 | 298 |
|
299 |
case Some(Text.Info(range1, tok)) if tok.is_end => |
|
63427 | 300 |
find_block(_.is_end, _.is_begin, _ => false, _ => true, reverse_caret_iterator()) |
58763 | 301 |
match { |
302 |
case Some((_, range2)) => |
|
63427 | 303 |
reverse_caret_iterator(). |
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dropWhile(info => info.range != range2). |
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dropWhile(info => info.range == range2). |
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find(info => info.info.is_command || info.info.is_begin) |
58763 | 307 |
match { |
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case Some(Text.Info(range3, tok)) => |
63424 | 309 |
if (keywords.is_command(tok, Keyword.theory_block)) Some((range1, range3)) |
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else Some((range1, range2)) |
58763 | 311 |
case None => None |
312 |
} |
|
313 |
case None => None |
|
314 |
} |
|
58752 | 315 |
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case _ => None |
58748 | 317 |
} |
66183 | 318 |
case None => None |
58748 | 319 |
} |
320 |
} |
|
321 |
||
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322 |
def getMatch(text_area: TextArea): StructureMatcher.Match = |
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323 |
find_pair(text_area) match { |
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case Some((_, range)) => |
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325 |
val line = text_area.getBuffer.getLineOfOffset(range.start) |
63422 | 326 |
new StructureMatcher.Match(Matcher, line, range.start, line, range.stop) |
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case None => null |
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328 |
} |
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329 |
|
73340 | 330 |
def selectMatch(text_area: TextArea): Unit = |
58748 | 331 |
{ |
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332 |
def get_span(offset: Text.Offset): Option[Text.Range] = |
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333 |
for { |
59074 | 334 |
syntax <- Isabelle.buffer_syntax(text_area.getBuffer) |
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span <- Token_Markup.command_span(syntax, text_area.getBuffer, offset) |
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336 |
} yield span.range |
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|
337 |
|
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338 |
find_pair(text_area) match { |
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339 |
case Some((r1, r2)) => |
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(get_span(r1.start), get_span(r2.start)) match { |
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341 |
case (Some(range1), Some(range2)) => |
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342 |
val start = range1.start min range2.start |
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343 |
val stop = range1.stop max range2.stop |
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344 |
|
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345 |
text_area.moveCaretPosition(stop, false) |
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346 |
if (!text_area.isMultipleSelectionEnabled) text_area.selectNone |
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347 |
text_area.addToSelection(new Selection.Range(start, stop)) |
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|
348 |
case _ => |
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349 |
} |
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350 |
case None => |
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351 |
} |
58748 | 352 |
} |
353 |
} |
|
354 |
} |