// Copyright 2008 the V8 project authors. 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.

//     * Neither the name of Google Inc. nor the names of its

//       contributors may be used to endorse or promote products derived

//       from this software without specific prior written permission.

//

// 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

// OWNER 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.



// Flags: --expose-debug-as debug

// For this test to work this file MUST have CR LF line endings.

function a() { b(); };

function    b() {

  c(true);

};

  function c(x) {

    if (x) {

      return 1;

    } else {

      return 1;

    }

  };

function d(x) {

  x = 1 ;

  x = 2 ;

  x = 3 ;

  x = 4 ;

  x = 5 ;

  x = 6 ;

  x = 7 ;

  x = 8 ;

  x = 9 ;

  x = 10;

  x = 11;

  x = 12;

  x = 13;

  x = 14;

  x = 15;

}



// Get the Debug object exposed from the debug context global object.

Debug = debug.Debug



// This is the number of comment lines above the first test function.

var comment_lines = 29;



// This is the last position in the entire file (note: this equals

// file size of <debug-sourceinfo.js> - 1, since starting at 0).

var last_position = 14312;

// This is the last line of entire file (note: starting at 0).

var last_line = 351;

// This is the last column of last line (note: starting at 0 and +2, due

// to trailing <CR><LF>).

var last_column = 2;



// This magic number is the length or the first line comment (actually number

// of characters before 'function a(...'.

var comment_line_length = 1726;

var start_a = 10 + comment_line_length;

var start_b = 37 + comment_line_length;

var start_c = 71 + comment_line_length;

var start_d = 163 + comment_line_length;



// The position of the first line of d(), i.e. "x = 1 ;".

var start_code_d = start_d + 7;

// The line # of the first line of d() (note: starting at 0).

var start_line_d = 41;

var line_length_d = 11;

var num_lines_d = 15;



assertEquals(start_a, Debug.sourcePosition(a));

assertEquals(start_b, Debug.sourcePosition(b));

assertEquals(start_c, Debug.sourcePosition(c));

assertEquals(start_d, Debug.sourcePosition(d));



var script = Debug.findScript(a);

assertTrue(script.data === Debug.findScript(b).data);

assertTrue(script.data === Debug.findScript(c).data);

assertTrue(script.data === Debug.findScript(d).data);

assertTrue(script.source === Debug.findScript(b).source);

assertTrue(script.source === Debug.findScript(c).source);

assertTrue(script.source === Debug.findScript(d).source);



// Test that when running through source positions the position, line and

// column progresses as expected.

var position;

var line;

var column;

for (var p = 0; p < 100; p++) {

  var location = script.locationFromPosition(p);

  if (p > 0) {

    assertEquals(position + 1, location.position);

    if (line == location.line) {

      assertEquals(column + 1, location.column);

    } else {

      assertEquals(line + 1, location.line);

      assertEquals(0, location.column);

    }

  } else {

    assertEquals(0, location.position);

    assertEquals(0, location.line);

    assertEquals(0, location.column);

  }



  // Remember the location.

  position = location.position;

  line = location.line;

  column = location.column;

}



// Every line of d() is the same length.  Verify we can loop through all

// positions and find the right line # for each.

var p = start_code_d;

for (line = 0; line < num_lines_d; line++) {

  for (column = 0; column < line_length_d; column++) {

    var location = script.locationFromPosition(p);

    assertEquals(p, location.position);

    assertEquals(start_line_d + line, location.line);

    assertEquals(column, location.column);

    p++;

  }

}



// Test first position.

assertEquals(0, script.locationFromPosition(0).position);

assertEquals(0, script.locationFromPosition(0).line);

assertEquals(0, script.locationFromPosition(0).column);



// Test second position.

assertEquals(1, script.locationFromPosition(1).position);

assertEquals(0, script.locationFromPosition(1).line);

assertEquals(1, script.locationFromPosition(1).column);



// Test first position in function a().

assertEquals(start_a, script.locationFromPosition(start_a).position);

assertEquals(0, script.locationFromPosition(start_a).line - comment_lines);

assertEquals(10, script.locationFromPosition(start_a).column);



// Test first position in function b().

assertEquals(start_b, script.locationFromPosition(start_b).position);

assertEquals(1, script.locationFromPosition(start_b).line - comment_lines);

assertEquals(13, script.locationFromPosition(start_b).column);



// Test first position in function c().

assertEquals(start_c, script.locationFromPosition(start_c).position);

assertEquals(4, script.locationFromPosition(start_c).line - comment_lines);

assertEquals(12, script.locationFromPosition(start_c).column);



// Test first position in function d().

assertEquals(start_d, script.locationFromPosition(start_d).position);

assertEquals(11, script.locationFromPosition(start_d).line - comment_lines);

assertEquals(10, script.locationFromPosition(start_d).column);



// Test first line.

assertEquals(0, script.locationFromLine().position);

assertEquals(0, script.locationFromLine().line);

assertEquals(0, script.locationFromLine().column);

assertEquals(0, script.locationFromLine(0).position);

assertEquals(0, script.locationFromLine(0).line);

assertEquals(0, script.locationFromLine(0).column);



// Test first line column 1.

assertEquals(1, script.locationFromLine(0, 1).position);

assertEquals(0, script.locationFromLine(0, 1).line);

assertEquals(1, script.locationFromLine(0, 1).column);



// Test first line offset 1.

assertEquals(1, script.locationFromLine(0, 0, 1).position);

assertEquals(0, script.locationFromLine(0, 0, 1).line);

assertEquals(1, script.locationFromLine(0, 0, 1).column);



// Test offset function a().

assertEquals(start_a, script.locationFromLine(void 0, void 0, start_a).position);

assertEquals(0, script.locationFromLine(void 0, void 0, start_a).line - comment_lines);

assertEquals(10, script.locationFromLine(void 0, void 0, start_a).column);

assertEquals(start_a, script.locationFromLine(0, void 0, start_a).position);

assertEquals(0, script.locationFromLine(0, void 0, start_a).line - comment_lines);

assertEquals(10, script.locationFromLine(0, void 0, start_a).column);

assertEquals(start_a, script.locationFromLine(0, 0, start_a).position);

assertEquals(0, script.locationFromLine(0, 0, start_a).line - comment_lines);

assertEquals(10, script.locationFromLine(0, 0, start_a).column);



// Test second line offset function a().

assertEquals(start_a + 14, script.locationFromLine(1, 0, start_a).position);

assertEquals(1, script.locationFromLine(1, 0, start_a).line - comment_lines);

assertEquals(0, script.locationFromLine(1, 0, start_a).column);



// Test second line column 2 offset function a().

assertEquals(start_a + 14 + 2, script.locationFromLine(1, 2, start_a).position);

assertEquals(1, script.locationFromLine(1, 2, start_a).line - comment_lines);

assertEquals(2, script.locationFromLine(1, 2, start_a).column);



// Test offset function b().

assertEquals(start_b, script.locationFromLine(0, 0, start_b).position);

assertEquals(1, script.locationFromLine(0, 0, start_b).line - comment_lines);

assertEquals(13, script.locationFromLine(0, 0, start_b).column);



// Test second line offset function b().

assertEquals(start_b + 6, script.locationFromLine(1, 0, start_b).position);

assertEquals(2, script.locationFromLine(1, 0, start_b).line - comment_lines);

assertEquals(0, script.locationFromLine(1, 0, start_b).column);



// Test second line column 11 offset function b().

assertEquals(start_b + 6 + 11, script.locationFromLine(1, 11, start_b).position);

assertEquals(2, script.locationFromLine(1, 11, start_b).line - comment_lines);

assertEquals(11, script.locationFromLine(1, 11, start_b).column);



// Test second line column 12 offset function b. Second line in b is 11 long

// using column 12 wraps to next line.

assertEquals(start_b + 6 + 12, script.locationFromLine(1, 12, start_b).position);

assertEquals(3, script.locationFromLine(1, 12, start_b).line - comment_lines);

assertEquals(0, script.locationFromLine(1, 12, start_b).column);



// Test the Debug.findSourcePosition which wraps SourceManager.

assertEquals(0 + start_a, Debug.findFunctionSourceLocation(a, 0, 0).position);

assertEquals(0 + start_b, Debug.findFunctionSourceLocation(b, 0, 0).position);

assertEquals(6 + start_b, Debug.findFunctionSourceLocation(b, 1, 0).position);

assertEquals(8 + start_b, Debug.findFunctionSourceLocation(b, 1, 2).position);

assertEquals(18 + start_b, Debug.findFunctionSourceLocation(b, 2, 0).position);

assertEquals(0 + start_c, Debug.findFunctionSourceLocation(c, 0, 0).position);

assertEquals(7 + start_c, Debug.findFunctionSourceLocation(c, 1, 0).position);

assertEquals(21 + start_c, Debug.findFunctionSourceLocation(c, 2, 0).position);

assertEquals(38 + start_c, Debug.findFunctionSourceLocation(c, 3, 0).position);

assertEquals(52 + start_c, Debug.findFunctionSourceLocation(c, 4, 0).position);

assertEquals(69 + start_c, Debug.findFunctionSourceLocation(c, 5, 0).position);

assertEquals(76 + start_c, Debug.findFunctionSourceLocation(c, 6, 0).position);

assertEquals(0 + start_d, Debug.findFunctionSourceLocation(d, 0, 0).position);

assertEquals(7 + start_d, Debug.findFunctionSourceLocation(d, 1, 0).position);

for (i = 1; i <= num_lines_d; i++) {

  assertEquals(7 + (i * line_length_d) + start_d, Debug.findFunctionSourceLocation(d, (i + 1), 0).position);

}

assertEquals(175 + start_d, Debug.findFunctionSourceLocation(d, 17, 0).position);



// Make sure invalid inputs work properly.

assertEquals(0, script.locationFromPosition(-1).line);

assertEquals(null, script.locationFromPosition(last_position + 1));



// Test last position.

assertEquals(last_position, script.locationFromPosition(last_position).position);

assertEquals(last_line, script.locationFromPosition(last_position).line);

assertEquals(last_column, script.locationFromPosition(last_position).column);



// Test source line and restriction. All the following tests start from line 1

// column 2 in function b, which is the call to c.

//   c(true);

//   ^



var location;



location = script.locationFromLine(1, 0, start_b);

assertEquals('  c(true);', location.sourceText());



result = ['c', ' c', ' c(', '  c(', '  c(t']

for (var i = 1; i <= 5; i++) {

  location = script.locationFromLine(1, 2, start_b);

  location.restrict(i);

  assertEquals(result[i - 1], location.sourceText());

}



location = script.locationFromLine(1, 2, start_b);

location.restrict(1, 0);

assertEquals('c', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(2, 0);

assertEquals('c(', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(2, 1);

assertEquals(' c', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(2, 2);

assertEquals(' c', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(2, 3);

assertEquals(' c', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(3, 1);

assertEquals(' c(', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(5, 0);

assertEquals('c(tru', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(5, 2);

assertEquals('  c(t', location.sourceText());



location = script.locationFromLine(1, 2, start_b);

location.restrict(5, 4);

assertEquals('  c(t', location.sourceText());



// All the following tests start from line 1 column 10 in function b, which is

// the final character.

//   c(true);

//          ^



location = script.locationFromLine(1, 10, start_b);

location.restrict(5, 0);

assertEquals('rue);', location.sourceText());



location = script.locationFromLine(1, 10, start_b);

location.restrict(7, 0);

assertEquals('(true);', location.sourceText());



// All the following tests start from line 1 column 0 in function b, which is

// the first character.

//   c(true);

//^



location = script.locationFromLine(1, 0, start_b);

location.restrict(5, 0);

assertEquals('  c(t', location.sourceText());



location = script.locationFromLine(1, 0, start_b);

location.restrict(5, 4);

assertEquals('  c(t', location.sourceText());



location = script.locationFromLine(1, 0, start_b);

location.restrict(7, 0);

assertEquals('  c(tru', location.sourceText());



location = script.locationFromLine(1, 0, start_b);

location.restrict(7, 6);

assertEquals('  c(tru', location.sourceText());



// Test that script.sourceLine(line) works.

for (line = 0; line < num_lines_d; line++) {

  var line_content_regexp = new RegExp("  x = " + (line + 1));

  assertTrue(line_content_regexp.test(script.sourceLine(start_line_d + line)));

}

