static/panes/ast-view.js - compiler-explorer - Rivoreo Source Code Repositories

 // Copyright (c) 2017, Simon Brand
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
 //
 //     * Redistributions of source code must retain the above copyright notice,
 //       this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above copyright
 //       notice, this list of conditions and the following disclaimer in the
 //       documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 // POSSIBILITY OF SUCH DAMAGE.

 'use strict';

 var FontScale = require('../widgets/fontscale').FontScale;
 var monaco = require('monaco-editor');
 var _ = require('underscore');
 var $ = require('jquery');
 var colour = require('../colour');
 var ga = require('../analytics').ga;
 var monacoConfig = require('../monaco-config');
 var PaneRenaming = require('../widgets/pane-renaming').PaneRenaming;

 function Ast(hub, container, state) {
     this.container = container;
     this.eventHub = hub.createEventHub();
     this.domRoot = container.getElement();
     this.domRoot.html($('#ast').html());

     this.decorations = {};
     this.prevDecorations = [];
     var root = this.domRoot.find('.monaco-placeholder');
     this.astEditor = monaco.editor.create(root[0], monacoConfig.extendConfig({
         language: 'plaintext',
         readOnly: true,
         glyphMargin: true,
         lineNumbersMinChars: 3,
     }));

     this._compilerid = state.id;
     this._compilerName = state.compilerName;
     this._editorid = state.editorid;
     this._treeid = state.treeid;

     this.awaitingInitialResults = false;
     this.selection = state.selection;

     this.settings = {};

     this.colours = [];
     this.astCode = [];

     this.paneRenaming = new PaneRenaming(this, state);

     this.initButtons(state);
     this.initCallbacks();

     if (state && state.astOutput) {
         this.showAstResults(state.astOutput);
     }

     ga.proxy('send', {
         hitType: 'event',
         eventCategory: 'OpenViewPane',
         eventAction: 'Ast',
     });
 }

 Ast.prototype.initButtons = function (state) {
     this.fontScale = new FontScale(this.domRoot, state, this.astEditor);

     this.topBar = this.domRoot.find('.top-bar');
 };

 Ast.prototype.initCallbacks = function () {
     this.linkedFadeTimeoutId = -1;
     this.mouseMoveThrottledFunction = _.throttle(_.bind(this.onMouseMove, this), 50);
     this.astEditor.onMouseMove(_.bind(function (e) {
         this.mouseMoveThrottledFunction(e);
     }, this));

     this.fontScale.on('change', _.bind(this.updateState, this));
     this.paneRenaming.on('renamePane', this.updateState.bind(this));

     this.container.on('destroy', this.close, this);

     var onColoursOnCompile = this.eventHub.mediateDependentCalls(this.onColours, this.onCompileResult);

     this.eventHub.on('compileResult', onColoursOnCompile.dependencyProxy, this);
     this.eventHub.on('compiler', this.onCompiler, this);
     this.eventHub.on('colours', onColoursOnCompile.dependentProxy, this);
     this.eventHub.on('panesLinkLine', this.onPanesLinkLine, this);
     this.eventHub.on('compilerClose', this.onCompilerClose, this);
     this.eventHub.on('settingsChange', this.onSettingsChange, this);
     this.eventHub.emit('astViewOpened', this._compilerid);
     this.eventHub.emit('requestSettings');

     this.container.on('resize', this.resize, this);
     this.container.on('shown', this.resize, this);

     this.cursorSelectionThrottledFunction =
         _.throttle(_.bind(this.onDidChangeCursorSelection, this), 500);
     this.astEditor.onDidChangeCursorSelection(_.bind(function (e) {
         this.cursorSelectionThrottledFunction(e);
     }, this));
 };

 // TODO: de-dupe with compiler etc
 Ast.prototype.resize = function () {
     var topBarHeight = this.topBar.outerHeight(true);
     this.astEditor.layout({
         width: this.domRoot.width(),
         height: this.domRoot.height() - topBarHeight,
     });
 };

 Ast.prototype.onCompileResult = function (id, compiler, result, lang) {
     if (this._compilerid !== id) return;

     if (result.hasAstOutput) {
         this.showAstResults(result.astOutput);
     } else if (compiler.supportsAstView) {
         this.showAstResults([{text: '<No output>'}]);
     }

     if (lang && lang.monaco && this.getCurrentEditorLanguage() !== lang.monaco) {
         monaco.editor.setModelLanguage(this.astEditor.getModel(), lang.monaco);
     }
 };

 // Monaco language id of the current editor
 Ast.prototype.getCurrentEditorLanguage = function () {
     return this.astEditor.getModel().getLanguageId();
 };

 Ast.prototype.getDefaultPaneName = function () {
     return 'Ast Viewer';
 };

 Ast.prototype.getPaneTag = function () {
     if(this._editorid !== false) {
         return this._compilerName + ' (Editor #' + this._editorid + ', Compiler #' + this._compilerid + ')';
     } else {
         return this._compilerName + ' (Tree #' + this._treeid + ', Compiler #' + this._compilerid + ')';
     }
 };

 Ast.prototype.getPaneName = function () {
     return this.paneName ? this.paneName : this.getDefaultPaneName() + ' ' + this.getPaneTag();
 };

 Ast.prototype.updateTitle = function () {
     this.container.setTitle(_.escape(this.getPaneName()));
 };

 Ast.prototype.getDisplayableAst = function (astResult) {
     return '**' + astResult.astType + '** - ' + astResult.displayString;
 };

 Ast.prototype.showAstResults = function (results) {
     var fullText = results.map(function (x) {
         return x.text;
     }).join('\n');
     this.astEditor.setValue(fullText);
     this.astCode = results;

     if (!this.awaitingInitialResults) {
         if (this.selection) {
             this.astEditor.setSelection(this.selection);
             this.astEditor.revealLinesInCenter(this.selection.startLineNumber,
                 this.selection.endLineNumber);
         }
         this.awaitingInitialResults = true;
     }
 };

 Ast.prototype.onCompiler = function (id, compiler, options, editorid, treeid) {
     if (id === this._compilerid) {
         this._compilerName = compiler ? compiler.name : '';
         this._editorid = editorid;
         this._treeid = treeid;
         this.updateTitle();
         if (compiler && !compiler.supportsAstView) {
             this.astEditor.setValue('<AST output is not supported for this compiler>');
         }
     }
 };

 Ast.prototype.onColours = function (id, colours, scheme) {
     if (id === this._compilerid) {
         var astColours = {};
         _.each(this.astCode, function (x, index) {
             if (x.source && x.source.from.line && x.source.to.line &&
                 x.source.from.line <= x.source.to.line && x.source.to.line < x.source.from.line + 100) {
                 var i;
                 for (i = x.source.from.line; i <= x.source.to.line; ++i) {
                     if (colours[i - 1] !== undefined) {
                         astColours[index] = colours[i - 1];
                         break;
                     }
                 }
             }
         });
         this.colours = colour.applyColours(this.astEditor, astColours, scheme, this.colours);
     }
 };


 Ast.prototype.onCompilerClose = function (id) {
     if (id === this._compilerid) {
         // We can't immediately close as an outer loop somewhere in GoldenLayout is iterating over
         // the hierarchy. We can't modify while it's being iterated over.
         _.defer(function (self) {
             self.container.close();
         }, this);
     }
 };

 Ast.prototype.updateState = function () {
     this.container.setState(this.currentState());
 };

 Ast.prototype.currentState = function () {
     var state = {
         id: this._compilerid,
         editorid: this._editorid,
         treeid: this._treeid,
         selection: this.selection,
     };
     this.paneRenaming.addState(state);
     this.fontScale.addState(state);
     return state;
 };

 Ast.prototype.onCompilerClose = function (id) {
     if (id === this._compilerid) {
         // We can't immediately close as an outer loop somewhere in GoldenLayout is iterating over
         // the hierarchy. We can't modify while it's being iterated over.
         this.close();
         _.defer(function (self) {
             self.container.close();
         }, this);
     }
 };

 Ast.prototype.onSettingsChange = function (newSettings) {
     this.settings = newSettings;
     this.astEditor.updateOptions({
         contextmenu: newSettings.useCustomContextMenu,
         minimap: {
             enabled: newSettings.showMinimap,
         },
         fontFamily: newSettings.editorsFFont,
         fontLigatures: newSettings.editorsFLigatures,
     });
 };

 Ast.prototype.onMouseMove = function (e) {
     if (e === null || e.target === null || e.target.position === null) return;
     if (this.settings.hoverShowSource === true && this.astCode) {
         this.clearLinkedLines();
         var hoverCode = this.astCode[e.target.position.lineNumber - 1];
         if (hoverCode) {
             var sourceLine = -1;
             var colBegin = -1;
             var colEnd = -1;
             // We check that we actually have something to show at this point!
             if (hoverCode.source && hoverCode.source.from) {
                 sourceLine = hoverCode.source.from.line;
                 // Highlight part of a line corresponding to the node if it fits on one line
                 if (hoverCode.source.to && hoverCode.source.from.line === hoverCode.source.to.line) {
                     colBegin = hoverCode.source.from.col;
                     colEnd = hoverCode.source.to.col;
                 }
             }
             this.eventHub.emit('editorLinkLine', this._editorid, sourceLine, colBegin, colEnd, false);
             this.eventHub.emit('panesLinkLine', this._compilerid, sourceLine,
                 colBegin, colEnd, false, this.getPaneName());
         }
     }
 };

 Ast.prototype.onDidChangeCursorSelection = function (e) {
     if (this.awaitingInitialResults) {
         this.selection = e.selection;
         this.updateState();
     }
 };

 Ast.prototype.updateDecorations = function () {
     this.prevDecorations = this.astEditor.deltaDecorations(
         this.prevDecorations, _.flatten(_.values(this.decorations)));
 };

 Ast.prototype.clearLinkedLines = function () {
     this.decorations.linkedCode = [];
     this.updateDecorations();
 };

 Ast.prototype.onPanesLinkLine = function (compilerId, lineNumber, colBegin, colEnd, revealLine, sender) {
     if (Number(compilerId) === this._compilerid) {
         var lineNums = [];
         var singleNodeLines = [];
         var signalFromAnotherPane = sender !== this.getPaneName();
         _.each(this.astCode, function (astLine, i) {
             if (astLine.source
                 && astLine.source.from.line <= lineNumber && lineNumber <= astLine.source.to.line) {
                 var line = i + 1;
                 lineNums.push(line);
                 if (signalFromAnotherPane &&
                     astLine.source.from.line === lineNumber && astLine.source.to.line === lineNumber &&
                     astLine.source.from.col <= colEnd && colBegin <= astLine.source.to.col) {
                     singleNodeLines.push(line);
                 }
             }
         });
         if (revealLine && lineNums[0]) this.astEditor.revealLineInCenter(lineNums[0]);
         var lineClass = signalFromAnotherPane ? 'linked-code-decoration-line' : '';
         var contextLines = _.map(lineNums, function (line) {
             return {
                 range: new monaco.Range(line, 1, line, 1),
                 options: {
                     isWholeLine: true,
                     linesDecorationsClassName: 'linked-code-decoration-margin',
                     className: lineClass,
                 },
             };
         });
         var directlyLinkedLines = _.map(singleNodeLines, function (line) {
             return {
                 range: new monaco.Range(line, 1, line, 1),
                 options: {
                     isWholeLine: true,
                     inlineClassName: 'linked-code-decoration-column',
                 },
             };
         });
         this.decorations.linkedCode = contextLines.concat(directlyLinkedLines);
         if (this.linkedFadeTimeoutId !== -1) {
             clearTimeout(this.linkedFadeTimeoutId);
         }
         this.linkedFadeTimeoutId = setTimeout(_.bind(function () {
             this.clearLinkedLines();
             this.linkedFadeTimeoutId = -1;
         }, this), 5000);
         this.updateDecorations();
     }
 };

 Ast.prototype.close = function () {
     this.eventHub.unsubscribe();
     this.eventHub.emit('astViewClosed', this._compilerid);
     this.astEditor.dispose();
 };

 module.exports = {
     Ast: Ast,
 };
	// Copyright (c) 2017, Simon Brand
	// All rights reserved.
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// * Redistributions of source code must retain the above copyright notice,
	// this list of conditions and the following disclaimer.
	// * Redistributions in binary form must reproduce the above copyright
	// notice, this list of conditions and the following disclaimer in the
	// documentation and/or other materials provided with the distribution.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
	// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	// POSSIBILITY OF SUCH DAMAGE.

	'use strict';

	var FontScale = require('../widgets/fontscale').FontScale;
	var monaco = require('monaco-editor');
	var _ = require('underscore');
	var $ = require('jquery');
	var colour = require('../colour');
	var ga = require('../analytics').ga;
	var monacoConfig = require('../monaco-config');
	var PaneRenaming = require('../widgets/pane-renaming').PaneRenaming;

	function Ast(hub, container, state) {
	this.container = container;
	this.eventHub = hub.createEventHub();
	this.domRoot = container.getElement();
	this.domRoot.html($('#ast').html());

	this.decorations = {};
	this.prevDecorations = [];
	var root = this.domRoot.find('.monaco-placeholder');
	this.astEditor = monaco.editor.create(root[0], monacoConfig.extendConfig({
	language: 'plaintext',
	readOnly: true,
	glyphMargin: true,
	lineNumbersMinChars: 3,
	}));

	this._compilerid = state.id;
	this._compilerName = state.compilerName;
	this._editorid = state.editorid;
	this._treeid = state.treeid;

	this.awaitingInitialResults = false;
	this.selection = state.selection;

	this.settings = {};

	this.colours = [];
	this.astCode = [];

	this.paneRenaming = new PaneRenaming(this, state);

	this.initButtons(state);
	this.initCallbacks();

	if (state && state.astOutput) {
	this.showAstResults(state.astOutput);
	}

	ga.proxy('send', {
	hitType: 'event',
	eventCategory: 'OpenViewPane',
	eventAction: 'Ast',
	});
	}

	Ast.prototype.initButtons = function (state) {
	this.fontScale = new FontScale(this.domRoot, state, this.astEditor);

	this.topBar = this.domRoot.find('.top-bar');
	};

	Ast.prototype.initCallbacks = function () {
	this.linkedFadeTimeoutId = -1;
	this.mouseMoveThrottledFunction = _.throttle(_.bind(this.onMouseMove, this), 50);
	this.astEditor.onMouseMove(_.bind(function (e) {
	this.mouseMoveThrottledFunction(e);
	}, this));

	this.fontScale.on('change', _.bind(this.updateState, this));
	this.paneRenaming.on('renamePane', this.updateState.bind(this));

	this.container.on('destroy', this.close, this);

	var onColoursOnCompile = this.eventHub.mediateDependentCalls(this.onColours, this.onCompileResult);

	this.eventHub.on('compileResult', onColoursOnCompile.dependencyProxy, this);
	this.eventHub.on('compiler', this.onCompiler, this);
	this.eventHub.on('colours', onColoursOnCompile.dependentProxy, this);
	this.eventHub.on('panesLinkLine', this.onPanesLinkLine, this);
	this.eventHub.on('compilerClose', this.onCompilerClose, this);
	this.eventHub.on('settingsChange', this.onSettingsChange, this);
	this.eventHub.emit('astViewOpened', this._compilerid);
	this.eventHub.emit('requestSettings');

	this.container.on('resize', this.resize, this);
	this.container.on('shown', this.resize, this);

	this.cursorSelectionThrottledFunction =
	_.throttle(_.bind(this.onDidChangeCursorSelection, this), 500);
	this.astEditor.onDidChangeCursorSelection(_.bind(function (e) {
	this.cursorSelectionThrottledFunction(e);
	}, this));
	};

	// TODO: de-dupe with compiler etc
	Ast.prototype.resize = function () {
	var topBarHeight = this.topBar.outerHeight(true);
	this.astEditor.layout({
	width: this.domRoot.width(),
	height: this.domRoot.height() - topBarHeight,
	});
	};

	Ast.prototype.onCompileResult = function (id, compiler, result, lang) {
	if (this._compilerid !== id) return;

	if (result.hasAstOutput) {
	this.showAstResults(result.astOutput);
	} else if (compiler.supportsAstView) {
	this.showAstResults([{text: '<No output>'}]);
	}

	if (lang && lang.monaco && this.getCurrentEditorLanguage() !== lang.monaco) {
	monaco.editor.setModelLanguage(this.astEditor.getModel(), lang.monaco);
	}
	};

	// Monaco language id of the current editor
	Ast.prototype.getCurrentEditorLanguage = function () {
	return this.astEditor.getModel().getLanguageId();
	};

	Ast.prototype.getDefaultPaneName = function () {
	return 'Ast Viewer';
	};

	Ast.prototype.getPaneTag = function () {
	if(this._editorid !== false) {
	return this._compilerName + ' (Editor #' + this._editorid + ', Compiler #' + this._compilerid + ')';
	} else {
	return this._compilerName + ' (Tree #' + this._treeid + ', Compiler #' + this._compilerid + ')';
	}
	};

	Ast.prototype.getPaneName = function () {
	return this.paneName ? this.paneName : this.getDefaultPaneName() + ' ' + this.getPaneTag();
	};

	Ast.prototype.updateTitle = function () {
	this.container.setTitle(_.escape(this.getPaneName()));
	};

	Ast.prototype.getDisplayableAst = function (astResult) {
	return '' + astResult.astType + ' - ' + astResult.displayString;
	};

	Ast.prototype.showAstResults = function (results) {
	var fullText = results.map(function (x) {
	return x.text;
	}).join('\n');
	this.astEditor.setValue(fullText);
	this.astCode = results;

	if (!this.awaitingInitialResults) {
	if (this.selection) {
	this.astEditor.setSelection(this.selection);
	this.astEditor.revealLinesInCenter(this.selection.startLineNumber,
	this.selection.endLineNumber);
	}
	this.awaitingInitialResults = true;
	}
	};

	Ast.prototype.onCompiler = function (id, compiler, options, editorid, treeid) {
	if (id === this._compilerid) {
	this._compilerName = compiler ? compiler.name : '';
	this._editorid = editorid;
	this._treeid = treeid;
	this.updateTitle();
	if (compiler && !compiler.supportsAstView) {
	this.astEditor.setValue('<AST output is not supported for this compiler>');
	}
	}
	};

	Ast.prototype.onColours = function (id, colours, scheme) {
	if (id === this._compilerid) {
	var astColours = {};
	_.each(this.astCode, function (x, index) {
	if (x.source && x.source.from.line && x.source.to.line &&
	x.source.from.line <= x.source.to.line && x.source.to.line < x.source.from.line + 100) {
	var i;
	for (i = x.source.from.line; i <= x.source.to.line; ++i) {
	if (colours[i - 1] !== undefined) {
	astColours[index] = colours[i - 1];
	break;
	}
	}
	}
	});
	this.colours = colour.applyColours(this.astEditor, astColours, scheme, this.colours);
	}
	};


	Ast.prototype.onCompilerClose = function (id) {
	if (id === this._compilerid) {
	// We can't immediately close as an outer loop somewhere in GoldenLayout is iterating over
	// the hierarchy. We can't modify while it's being iterated over.
	_.defer(function (self) {
	self.container.close();
	}, this);
	}
	};

	Ast.prototype.updateState = function () {
	this.container.setState(this.currentState());
	};

	Ast.prototype.currentState = function () {
	var state = {
	id: this._compilerid,
	editorid: this._editorid,
	treeid: this._treeid,
	selection: this.selection,
	};
	this.paneRenaming.addState(state);
	this.fontScale.addState(state);
	return state;
	};

	Ast.prototype.onCompilerClose = function (id) {
	if (id === this._compilerid) {
	// We can't immediately close as an outer loop somewhere in GoldenLayout is iterating over
	// the hierarchy. We can't modify while it's being iterated over.
	this.close();
	_.defer(function (self) {
	self.container.close();
	}, this);
	}
	};

	Ast.prototype.onSettingsChange = function (newSettings) {
	this.settings = newSettings;
	this.astEditor.updateOptions({
	contextmenu: newSettings.useCustomContextMenu,
	minimap: {
	enabled: newSettings.showMinimap,
	},
	fontFamily: newSettings.editorsFFont,
	fontLigatures: newSettings.editorsFLigatures,
	});
	};

	Ast.prototype.onMouseMove = function (e) {
	if (e === null \|\| e.target === null \|\| e.target.position === null) return;
	if (this.settings.hoverShowSource === true && this.astCode) {
	this.clearLinkedLines();
	var hoverCode = this.astCode[e.target.position.lineNumber - 1];
	if (hoverCode) {
	var sourceLine = -1;
	var colBegin = -1;
	var colEnd = -1;
	// We check that we actually have something to show at this point!
	if (hoverCode.source && hoverCode.source.from) {
	sourceLine = hoverCode.source.from.line;
	// Highlight part of a line corresponding to the node if it fits on one line
	if (hoverCode.source.to && hoverCode.source.from.line === hoverCode.source.to.line) {
	colBegin = hoverCode.source.from.col;
	colEnd = hoverCode.source.to.col;
	}
	}
	this.eventHub.emit('editorLinkLine', this._editorid, sourceLine, colBegin, colEnd, false);
	this.eventHub.emit('panesLinkLine', this._compilerid, sourceLine,
	colBegin, colEnd, false, this.getPaneName());
	}
	}
	};

	Ast.prototype.onDidChangeCursorSelection = function (e) {
	if (this.awaitingInitialResults) {
	this.selection = e.selection;
	this.updateState();
	}
	};

	Ast.prototype.updateDecorations = function () {
	this.prevDecorations = this.astEditor.deltaDecorations(
	this.prevDecorations, _.flatten(_.values(this.decorations)));
	};

	Ast.prototype.clearLinkedLines = function () {
	this.decorations.linkedCode = [];
	this.updateDecorations();
	};

	Ast.prototype.onPanesLinkLine = function (compilerId, lineNumber, colBegin, colEnd, revealLine, sender) {
	if (Number(compilerId) === this._compilerid) {
	var lineNums = [];
	var singleNodeLines = [];
	var signalFromAnotherPane = sender !== this.getPaneName();
	_.each(this.astCode, function (astLine, i) {
	if (astLine.source
	&& astLine.source.from.line <= lineNumber && lineNumber <= astLine.source.to.line) {
	var line = i + 1;
	lineNums.push(line);
	if (signalFromAnotherPane &&
	astLine.source.from.line === lineNumber && astLine.source.to.line === lineNumber &&
	astLine.source.from.col <= colEnd && colBegin <= astLine.source.to.col) {
	singleNodeLines.push(line);
	}
	}
	});
	if (revealLine && lineNums[0]) this.astEditor.revealLineInCenter(lineNums[0]);
	var lineClass = signalFromAnotherPane ? 'linked-code-decoration-line' : '';
	var contextLines = _.map(lineNums, function (line) {
	return {
	range: new monaco.Range(line, 1, line, 1),
	options: {
	isWholeLine: true,
	linesDecorationsClassName: 'linked-code-decoration-margin',
	className: lineClass,
	},
	};
	});
	var directlyLinkedLines = _.map(singleNodeLines, function (line) {
	return {
	range: new monaco.Range(line, 1, line, 1),
	options: {
	isWholeLine: true,
	inlineClassName: 'linked-code-decoration-column',
	},
	};
	});
	this.decorations.linkedCode = contextLines.concat(directlyLinkedLines);
	if (this.linkedFadeTimeoutId !== -1) {
	clearTimeout(this.linkedFadeTimeoutId);
	}
	this.linkedFadeTimeoutId = setTimeout(_.bind(function () {
	this.clearLinkedLines();
	this.linkedFadeTimeoutId = -1;
	}, this), 5000);
	this.updateDecorations();
	}
	};

	Ast.prototype.close = function () {
	this.eventHub.unsubscribe();
	this.eventHub.emit('astViewClosed', this._compilerid);
	this.astEditor.dispose();
	};

	module.exports = {
	Ast: Ast,
	};