Handle hterm preferences with better care

.gotty

@@ -57,23 +57,237 @@
 // [bool] Accept only one client and exit gotty once the client exits
 // once = false
 
-
+// [bool] Allow clients to send command line arguments
+// permit_arguments = false
 
 // [object] Client terminal (hterm) preferences
-//          Examples below are some of commonly used options.
-//          See hterm's documentation for the complete list of preferences.
-//          https://chromium.googlesource.com/apps/libapps/+/master/hterm/js/hterm_preference_manager.js
-//          (Note that fihens `-` in preference names must be replaced by underscores `_`)
 // preferences {
-//   background_color = "rgb(16, 16, 16)"
-//   background_image = ""
-//   cursor_blink = false
-//   cursor_color = "rgba(255, 0, 0, 0.5)"
-//   ctrl_c_copy = false
-//   ctrl_v_paste = false
-//   east_asian_ambiguous_as_two_column = false
-//   font_family = "'DejaVu Sans Mono', 'Everson Mono', 'FreeMono', 'Menlo', 'Terminal',  monospace"
-//   font_size = 15
-//   foreground_color = "rgb(240, 240, 240)"
-//   user_css = ""
+
+  // [enum(null, "none", "ctrl-alt", "left-alt", "right-alt")]
+  //     Select an AltGr detection hack^Wheuristic.
+  //       null: Autodetect based on navigator.language: "en-us" => "none", else => "right-alt"
+  //       "none": Disable any AltGr related munging.
+  //       "ctrl-alt": Assume Ctrl+Alt means AltGr.
+  //       "left-alt": Assume left Alt means AltGr.
+  //       "right-alt": Assume right Alt means AltGr.
+  // alt_gr_mode = null
+
+  // [bool] If set, alt-backspace indeed is alt-backspace.
+  // alt_backspace_is_meta_backspace = false
+
+  // [bool] Set whether the alt key acts as a meta key or as a distinct alt key.
+  // alt_is_meta = false
+
+  // [enum("escape", "8-bit", "browser-key")]
+  //     Controls how the alt key is handled.
+  //       "escape"....... Send an ESC prefix.
+  //       "8-bit"........ Add 128 to the unshifted character as in xterm.
+  //       "browser-key".. Wait for the keypress event and see what the browser
+  //                       says.  (This won't work well on platforms where the
+  //                       browser performs a default action for some alt sequences.)
+  // alt_sends_what = "escape"
+
+  // [string] URL of the terminal bell sound.  Empty string for no audible bell.
+  // audible_bell_sound = "lib-resource:hterm/audio/bell"
+
+  // [bool] If true, terminal bells in the background will create a Web Notification. http://www.w3.org/TR/notifications/
+  //        Displaying notifications requires permission from the user.
+  //        When this option is set to true, hterm will attempt to ask the user for
+  //        permission if necessary.
+  //        Note browsers may not show this permission request
+  //        if it did not originate from a user action.
+  // desktop_notification_bell = false
+
+  // [string] The background color for text with no other color attributes.
+  // background_color = "rgb(16, 16, 16)"
+
+  // [string] CSS value of the background image.  Empty string for no image.
+  //          For example:
+  //            "url(https://goo.gl/anedTK) linear-gradient(top bottom, blue, red)"
+  // background_image = ""
+
+  // [string] CSS value of the background image size.  Defaults to none.
+  // background_size = ""
+
+  // [string] CSS value of the background image position.
+  //          For example:
+  //           "10% 10% center"
+  // background_position = ""
+
+  // [bool] If true, the backspace should send BS ('\x08', aka ^H).  Otherwise the backspace key should send '\x7f'.
+  // backspace_sends_backspace = false
+
+  // [map[string]map[string]string]
+  //     A nested map where each property is the character set code and the value is a map that is a sparse array itself. In that sparse array, each property is the received character and the value is the displayed character.
+  //     For example:
+  //       {"0" = {"+" = "\u2192"
+  //               "," = "\u2190"
+  //               "-" = "\u2191"
+  //               "." = "\u2193"
+  //               "0" = "\u2588"}}
+  // character_map_overrides = null
+
+  // [bool] Whether or not to close the window when the command exits.
+  // close_on_exit = true
+
+  // [bool] Whether or not to blink the cursor by default.
+  // cursor_blink = false
+
+  // [2[int]] The cursor blink rate in milliseconds.
+  //          A two element array, the first of which is how long the cursor should be on, second is how long it should be off.
+  // cursor_blink_cycle = [1000, 500]
+
+  // [string] The color of the visible cursor.
+  // cursor_color = "rgba(255, 0, 0, 0.5)"
+
+  // [[]string]
+  //     Override colors in the default palette.
+  //     This can be specified as an array or an object. 
+  //     Values can be specified as almost any css color value.
+  //     This includes #RGB, #RRGGBB, rgb(...), rgba(...), and any color names that are also part of the stock X11 rgb.txt file.
+  //     You can use 'null' to specify that the default value should be not be changed.
+  //     This is useful for skipping a small number of indicies when the value is specified as an array.
+  // color_palette_overrides = null
+
+  // [bool] Automatically copy mouse selection to the clipboard.
+  // copy_on_select = true
+
+  // [bool] Whether to use the default window copy behaviour
+  // use_default_window_copy = false
+
+  // [bool] Whether to clear the selection after copying.
+  // clear_selection_after_copy = true
+
+  // [bool] If true, Ctrl-Plus/Minus/Zero controls zoom.
+  //        If false, Ctrl-Shift-Plus/Minus/Zero controls zoom, Ctrl-Minus sends ^_, Ctrl-Plus/Zero do nothing.
+  // ctrl_plus_minus_zero_zoom = true
+
+  // [bool] Ctrl+C copies if true, send ^C to host if false.
+  //        Ctrl+Shift+C sends ^C to host if true, copies if false.
+  // ctrl_c_copy = false
+
+  // [bool] Ctrl+V pastes if true, send ^V to host if false.
+  //        Ctrl+Shift+V sends ^V to host if true, pastes if false.
+  // ctrl_v_paste = false
+
+  // [bool] Set whether East Asian Ambiguous characters have two column width.
+  // east_asian_ambiguous_as_two_column = false
+
+  // [bool] True to enable 8-bit control characters, false to ignore them.
+  //        We'll respect the two-byte versions of these control characters regardless of this setting.
+  // enable_8_bit_control = false
+
+  // [enum(null, true, false)]
+  //     True if we should use bold weight font for text with the bold/bright attribute.
+  //     False to use the normal weight font.
+  //     Null to autodetect.
+  // enable_bold = null
+
+  // [bool] True if we should use bright colors (8-15 on a 16 color palette) for any text with the bold attribute.
+  //        False otherwise.
+  // enable_bold_as_bright = true
+
+  // [bool] Show a message in the terminal when the host writes to the clipboard.
+  // enable_clipboard_notice = true
+
+  // [bool] Allow the host to write directly to the system clipboard.
+  // enable_clipboard_write = true
+
+  // [bool] Respect the host's attempt to change the cursor blink status using DEC Private Mode 12.
+  // enable_dec12 = false
+
+  // [map[string]string] The default environment variables, as an object.
+  // environment = {"TERM" = "xterm-256color"}
+
+  // [string] Default font family for the terminal text.
+  // font_family = "'DejaVu Sans Mono', 'Everson Mono', FreeMono, 'Menlo', 'Terminal', monospace"
+
+  // [int] The default font size in pixels.
+  // font_size = 15
+
+  // [string] CSS font-smoothing property.
+  // font_smoothing = "antialiased"
+
+  // [string] The foreground color for text with no other color attributes.
+  // foreground_color = "rgb(240, 240, 240)"
+
+  // [bool] If true, home/end will control the terminal scrollbar and shift home/end will send the VT keycodes.  If false then home/end sends VT codes and shift home/end scrolls.
+  // home_keys_scroll = false
+
+  // [map[string]string]
+  //     A map of key sequence to key actions.
+  //     Key sequences include zero or more modifier keys followed by a key code.
+  //     Key codes can be decimal or hexadecimal numbers, or a key identifier.
+  //     Key actions can be specified a string to send to the host, or an action identifier.
+  //     For a full list of key code and action identifiers, see https://goo.gl/8AoD09.
+  //     Sample keybindings:
+  //       {"Ctrl-Alt-K" = "clearScrollback"
+  //        "Ctrl-Shift-L"= "PASS"
+  //        "Ctrl-H" = "'HELLO\n'"}
+  // keybindings = null
+
+  // [int] Max length of a DCS, OSC, PM, or APS sequence before we give up and ignore the code.
+  // max_string_sequence = 100000
+
+  // [bool] If true, convert media keys to their Fkey equivalent.
+  //        If false, let the browser handle the keys.
+  // media_keys_are_fkeys = false
+
+  // [bool] Set whether the meta key sends a leading escape or not.
+  // meta_sends_escape = true
+
+  // [enum(null, 0, 1, 2, 3, 4, 5, 6]
+  //     Mouse paste button, or null to autodetect.
+  //     For autodetect, we'll try to enable middle button paste for non-X11 platforms.
+  //     On X11 we move it to button 3.
+  // mouse_paste_button = null
+
+  // [bool] If true, page up/down will control the terminal scrollbar and shift page up/down will send the VT keycodes.
+  //        If false then page up/down sends VT codes and shift page up/down scrolls.
+  // page_keys_scroll = false
+
+  // [enum(null, true, false)]
+  //     Set whether we should pass Alt-1..9 to the browser.
+  //     This is handy when running hterm in a browser tab, so that you don't lose Chrome's "switch to tab" keyboard accelerators.  When not running in a tab it's better to send these keys to the host so they can be used in vim or emacs.
+  //     If true, Alt-1..9 will be handled by the browser.
+  //     If false, Alt-1..9 will be sent to the host.
+  //     If null, autodetect based on browser platform and window type.
+  // pass_alt_number = null
+
+  // [enum(null, true, false)]
+  //     Set whether we should pass Ctrl-1..9 to the browser.
+  //     This is handy when running hterm in a browser tab, so that you don't lose Chrome's "switch to tab" keyboard accelerators.  When not running in a tab it's better to send these keys to the host so they can be used in vim or emacs.
+  //     If true, Ctrl-1..9 will be handled by the browser.
+  //     If false, Ctrl-1..9 will be sent to the host.
+  //     If null, autodetect based on browser platform and window type.
+  // pass_ctrl_number = null
+
+  // [enum(null, true, false)]
+  //     Set whether we should pass Meta-1..9 to the browser.
+  //     This is handy when running hterm in a browser tab, so that you don't lose Chrome's "switch to tab" keyboard accelerators.  When not running in a tab it's better to send these keys to the host so they can be used in vim or emacs.
+  //     If true, Meta-1..9 will be handled by the browser.
+  //     If false, Meta-1..9 will be sent to the host.  If null, autodetect based on browser platform and window type.
+  // pass_meta_number = null
+
+  // [bool] Set whether meta-V gets passed to host.
+  // pass_meta_v = true
+
+  // [bool] If true, scroll to the bottom on any keystroke.
+  // scroll_on_keystroke = true
+
+  // [bool] If true, scroll to the bottom on terminal output.
+  // scroll_on_output = false
+
+  // [bool] The vertical scrollbar mode.
+  // scrollbar_visible = true
+
+  // [int] The multiplier for the pixel delta in mousewheel event caused by the scroll wheel. Alters how fast the page scrolls.
+  // scroll_wheel_move_multiplier = 1
+
+  // [bool] Shift + Insert pastes if true, sent to host if false.
+  // shift_insert_paste = true
+
+  // [string] URL of user stylesheet to include in the terminal document.
+  // user_css = ""
+
 // }

Godeps/Godeps.json

@@ -28,15 +28,15 @@
 			"ImportPath": "github.com/hashicorp/go-multierror",
 			"Rev": "56912fb08d85084aa318edcf2bba735b97cf35c5"
 		},
-		{
-			"ImportPath": "github.com/hashicorp/hcl",
-			"Rev": "54864211433d45cb780682431585b3e573b49e4a"
-		},
 		{
 			"ImportPath": "github.com/kr/pty",
 			"Comment": "release.r56-28-g5cf931e",
 			"Rev": "5cf931ef8f76dccd0910001d74a58a7fca84a83d"
 		},
+		{
+			"ImportPath": "github.com/yudai/hcl",
+			"Rev": "7227a719113b77a78318a43dba44951556ff9e3d"
+		},
 		{
 			"ImportPath": "github.com/yudai/umutex",
 			"Rev": "18216d265c6bc72c3bb0ad9c8103d47d530b7003"

Godeps/_workspace/src/github.com/hashicorp/hcl/hcl/test-fixtures/list.hcl

@@ -1 +0,0 @@
-foo = [1, 2, "foo"]

Godeps/_workspace/src/github.com/hashicorp/hcl/hcl/y.go

@@ -1,611 +0,0 @@
-//line parse.y:4
-package hcl
-
-import __yyfmt__ "fmt"
-
-//line parse.y:4
-import (
-	"fmt"
-	"strconv"
-)
-
-//line parse.y:13
-type hclSymType struct {
-	yys     int
-	b       bool
-	f       float64
-	num     int
-	str     string
-	obj     *Object
-	objlist []*Object
-}
-
-const BOOL = 57346
-const FLOAT = 57347
-const NUMBER = 57348
-const COMMA = 57349
-const COMMAEND = 57350
-const IDENTIFIER = 57351
-const EQUAL = 57352
-const NEWLINE = 57353
-const STRING = 57354
-const MINUS = 57355
-const LEFTBRACE = 57356
-const RIGHTBRACE = 57357
-const LEFTBRACKET = 57358
-const RIGHTBRACKET = 57359
-const PERIOD = 57360
-const EPLUS = 57361
-const EMINUS = 57362
-
-var hclToknames = []string{
-	"BOOL",
-	"FLOAT",
-	"NUMBER",
-	"COMMA",
-	"COMMAEND",
-	"IDENTIFIER",
-	"EQUAL",
-	"NEWLINE",
-	"STRING",
-	"MINUS",
-	"LEFTBRACE",
-	"RIGHTBRACE",
-	"LEFTBRACKET",
-	"RIGHTBRACKET",
-	"PERIOD",
-	"EPLUS",
-	"EMINUS",
-}
-var hclStatenames = []string{}
-
-const hclEofCode = 1
-const hclErrCode = 2
-const hclMaxDepth = 200
-
-//line parse.y:259
-
-//line yacctab:1
-var hclExca = []int{
-	-1, 1,
-	1, -1,
-	-2, 0,
-	-1, 6,
-	10, 7,
-	-2, 17,
-	-1, 7,
-	10, 8,
-	-2, 18,
-}
-
-const hclNprod = 36
-const hclPrivate = 57344
-
-var hclTokenNames []string
-var hclStates []string
-
-const hclLast = 62
-
-var hclAct = []int{
-
-	35, 3, 21, 22, 9, 30, 31, 29, 17, 26,
-	25, 26, 25, 10, 26, 25, 18, 24, 13, 24,
-	23, 37, 24, 44, 45, 42, 34, 38, 39, 9,
-	32, 6, 6, 43, 7, 7, 2, 40, 28, 26,
-	25, 6, 41, 11, 7, 46, 37, 24, 14, 36,
-	27, 15, 5, 13, 19, 1, 4, 8, 33, 20,
-	16, 12,
-}
-var hclPact = []int{
-
-	32, -1000, 32, -1000, 3, -1000, -1000, -1000, 39, -1000,
-	4, -1000, -1000, 23, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -14, -14, 9, 6, -1000, -1000, 22, -1000, -1000,
-	36, 19, -1000, 16, -1000, -1000, -1000, -1000, -1000, -1000,
-	-1000, -1000, -1000, -1000, 34, -1000, -1000,
-}
-var hclPgo = []int{
-
-	0, 3, 2, 59, 58, 36, 52, 49, 43, 1,
-	0, 57, 7, 56, 55,
-}
-var hclR1 = []int{
-
-	0, 14, 14, 5, 5, 8, 8, 13, 13, 9,
-	9, 9, 9, 9, 9, 6, 6, 11, 11, 3,
-	3, 4, 4, 4, 10, 10, 7, 7, 7, 7,
-	2, 2, 1, 1, 12, 12,
-}
-var hclR2 = []int{
-
-	0, 0, 1, 1, 2, 3, 2, 1, 1, 3,
-	3, 3, 3, 3, 1, 2, 2, 1, 1, 3,
-	2, 1, 3, 2, 1, 1, 1, 1, 2, 2,
-	2, 1, 2, 1, 2, 2,
-}
-var hclChk = []int{
-
-	-1000, -14, -5, -9, -13, -6, 9, 12, -11, -9,
-	10, -8, -6, 14, 9, 12, -7, 4, 12, -8,
-	-3, -2, -1, 16, 13, 6, 5, -5, 15, -12,
-	19, 20, -12, -4, 17, -10, -7, 12, -2, -1,
-	15, 6, 6, 17, 7, 8, -10,
-}
-var hclDef = []int{
-
-	1, -2, 2, 3, 0, 14, -2, -2, 0, 4,
-	0, 15, 16, 0, 17, 18, 9, 10, 11, 12,
-	13, 26, 27, 0, 0, 31, 33, 0, 6, 28,
-	0, 0, 29, 0, 20, 21, 24, 25, 30, 32,
-	5, 34, 35, 19, 0, 23, 22,
-}
-var hclTok1 = []int{
-
-	1,
-}
-var hclTok2 = []int{
-
-	2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
-	12, 13, 14, 15, 16, 17, 18, 19, 20,
-}
-var hclTok3 = []int{
-	0,
-}
-
-//line yaccpar:1
-
-/*	parser for yacc output	*/
-
-var hclDebug = 0
-
-type hclLexer interface {
-	Lex(lval *hclSymType) int
-	Error(s string)
-}
-
-const hclFlag = -1000
-
-func hclTokname(c int) string {
-	// 4 is TOKSTART above
-	if c >= 4 && c-4 < len(hclToknames) {
-		if hclToknames[c-4] != "" {
-			return hclToknames[c-4]
-		}
-	}
-	return __yyfmt__.Sprintf("tok-%v", c)
-}
-
-func hclStatname(s int) string {
-	if s >= 0 && s < len(hclStatenames) {
-		if hclStatenames[s] != "" {
-			return hclStatenames[s]
-		}
-	}
-	return __yyfmt__.Sprintf("state-%v", s)
-}
-
-func hcllex1(lex hclLexer, lval *hclSymType) int {
-	c := 0
-	char := lex.Lex(lval)
-	if char <= 0 {
-		c = hclTok1[0]
-		goto out
-	}
-	if char < len(hclTok1) {
-		c = hclTok1[char]
-		goto out
-	}
-	if char >= hclPrivate {
-		if char < hclPrivate+len(hclTok2) {
-			c = hclTok2[char-hclPrivate]
-			goto out
-		}
-	}
-	for i := 0; i < len(hclTok3); i += 2 {
-		c = hclTok3[i+0]
-		if c == char {
-			c = hclTok3[i+1]
-			goto out
-		}
-	}
-
-out:
-	if c == 0 {
-		c = hclTok2[1] /* unknown char */
-	}
-	if hclDebug >= 3 {
-		__yyfmt__.Printf("lex %s(%d)\n", hclTokname(c), uint(char))
-	}
-	return c
-}
-
-func hclParse(hcllex hclLexer) int {
-	var hcln int
-	var hcllval hclSymType
-	var hclVAL hclSymType
-	hclS := make([]hclSymType, hclMaxDepth)
-
-	Nerrs := 0   /* number of errors */
-	Errflag := 0 /* error recovery flag */
-	hclstate := 0
-	hclchar := -1
-	hclp := -1
-	goto hclstack
-
-ret0:
-	return 0
-
-ret1:
-	return 1
-
-hclstack:
-	/* put a state and value onto the stack */
-	if hclDebug >= 4 {
-		__yyfmt__.Printf("char %v in %v\n", hclTokname(hclchar), hclStatname(hclstate))
-	}
-
-	hclp++
-	if hclp >= len(hclS) {
-		nyys := make([]hclSymType, len(hclS)*2)
-		copy(nyys, hclS)
-		hclS = nyys
-	}
-	hclS[hclp] = hclVAL
-	hclS[hclp].yys = hclstate
-
-hclnewstate:
-	hcln = hclPact[hclstate]
-	if hcln <= hclFlag {
-		goto hcldefault /* simple state */
-	}
-	if hclchar < 0 {
-		hclchar = hcllex1(hcllex, &hcllval)
-	}
-	hcln += hclchar
-	if hcln < 0 || hcln >= hclLast {
-		goto hcldefault
-	}
-	hcln = hclAct[hcln]
-	if hclChk[hcln] == hclchar { /* valid shift */
-		hclchar = -1
-		hclVAL = hcllval
-		hclstate = hcln
-		if Errflag > 0 {
-			Errflag--
-		}
-		goto hclstack
-	}
-
-hcldefault:
-	/* default state action */
-	hcln = hclDef[hclstate]
-	if hcln == -2 {
-		if hclchar < 0 {
-			hclchar = hcllex1(hcllex, &hcllval)
-		}
-
-		/* look through exception table */
-		xi := 0
-		for {
-			if hclExca[xi+0] == -1 && hclExca[xi+1] == hclstate {
-				break
-			}
-			xi += 2
-		}
-		for xi += 2; ; xi += 2 {
-			hcln = hclExca[xi+0]
-			if hcln < 0 || hcln == hclchar {
-				break
-			}
-		}
-		hcln = hclExca[xi+1]
-		if hcln < 0 {
-			goto ret0
-		}
-	}
-	if hcln == 0 {
-		/* error ... attempt to resume parsing */
-		switch Errflag {
-		case 0: /* brand new error */
-			hcllex.Error("syntax error")
-			Nerrs++
-			if hclDebug >= 1 {
-				__yyfmt__.Printf("%s", hclStatname(hclstate))
-				__yyfmt__.Printf(" saw %s\n", hclTokname(hclchar))
-			}
-			fallthrough
-
-		case 1, 2: /* incompletely recovered error ... try again */
-			Errflag = 3
-
-			/* find a state where "error" is a legal shift action */
-			for hclp >= 0 {
-				hcln = hclPact[hclS[hclp].yys] + hclErrCode
-				if hcln >= 0 && hcln < hclLast {
-					hclstate = hclAct[hcln] /* simulate a shift of "error" */
-					if hclChk[hclstate] == hclErrCode {
-						goto hclstack
-					}
-				}
-
-				/* the current p has no shift on "error", pop stack */
-				if hclDebug >= 2 {
-					__yyfmt__.Printf("error recovery pops state %d\n", hclS[hclp].yys)
-				}
-				hclp--
-			}
-			/* there is no state on the stack with an error shift ... abort */
-			goto ret1
-
-		case 3: /* no shift yet; clobber input char */
-			if hclDebug >= 2 {
-				__yyfmt__.Printf("error recovery discards %s\n", hclTokname(hclchar))
-			}
-			if hclchar == hclEofCode {
-				goto ret1
-			}
-			hclchar = -1
-			goto hclnewstate /* try again in the same state */
-		}
-	}
-
-	/* reduction by production hcln */
-	if hclDebug >= 2 {
-		__yyfmt__.Printf("reduce %v in:\n\t%v\n", hcln, hclStatname(hclstate))
-	}
-
-	hclnt := hcln
-	hclpt := hclp
-	_ = hclpt // guard against "declared and not used"
-
-	hclp -= hclR2[hcln]
-	hclVAL = hclS[hclp+1]
-
-	/* consult goto table to find next state */
-	hcln = hclR1[hcln]
-	hclg := hclPgo[hcln]
-	hclj := hclg + hclS[hclp].yys + 1
-
-	if hclj >= hclLast {
-		hclstate = hclAct[hclg]
-	} else {
-		hclstate = hclAct[hclj]
-		if hclChk[hclstate] != -hcln {
-			hclstate = hclAct[hclg]
-		}
-	}
-	// dummy call; replaced with literal code
-	switch hclnt {
-
-	case 1:
-		//line parse.y:39
-		{
-			hclResult = &Object{Type: ValueTypeObject}
-		}
-	case 2:
-		//line parse.y:43
-		{
-			hclResult = &Object{
-				Type:  ValueTypeObject,
-				Value: ObjectList(hclS[hclpt-0].objlist).Flat(),
-			}
-		}
-	case 3:
-		//line parse.y:52
-		{
-			hclVAL.objlist = []*Object{hclS[hclpt-0].obj}
-		}
-	case 4:
-		//line parse.y:56
-		{
-			hclVAL.objlist = append(hclS[hclpt-1].objlist, hclS[hclpt-0].obj)
-		}
-	case 5:
-		//line parse.y:62
-		{
-			hclVAL.obj = &Object{
-				Type:  ValueTypeObject,
-				Value: ObjectList(hclS[hclpt-1].objlist).Flat(),
-			}
-		}
-	case 6:
-		//line parse.y:69
-		{
-			hclVAL.obj = &Object{
-				Type: ValueTypeObject,
-			}
-		}
-	case 7:
-		//line parse.y:77
-		{
-			hclVAL.str = hclS[hclpt-0].str
-		}
-	case 8:
-		//line parse.y:81
-		{
-			hclVAL.str = hclS[hclpt-0].str
-		}
-	case 9:
-		//line parse.y:87
-		{
-			hclVAL.obj = hclS[hclpt-0].obj
-			hclVAL.obj.Key = hclS[hclpt-2].str
-		}
-	case 10:
-		//line parse.y:92
-		{
-			hclVAL.obj = &Object{
-				Key:   hclS[hclpt-2].str,
-				Type:  ValueTypeBool,
-				Value: hclS[hclpt-0].b,
-			}
-		}
-	case 11:
-		//line parse.y:100
-		{
-			hclVAL.obj = &Object{
-				Key:   hclS[hclpt-2].str,
-				Type:  ValueTypeString,
-				Value: hclS[hclpt-0].str,
-			}
-		}
-	case 12:
-		//line parse.y:108
-		{
-			hclS[hclpt-0].obj.Key = hclS[hclpt-2].str
-			hclVAL.obj = hclS[hclpt-0].obj
-		}
-	case 13:
-		//line parse.y:113
-		{
-			hclVAL.obj = &Object{
-				Key:   hclS[hclpt-2].str,
-				Type:  ValueTypeList,
-				Value: hclS[hclpt-0].objlist,
-			}
-		}
-	case 14:
-		//line parse.y:121
-		{
-			hclVAL.obj = hclS[hclpt-0].obj
-		}
-	case 15:
-		//line parse.y:127
-		{
-			hclS[hclpt-0].obj.Key = hclS[hclpt-1].str
-			hclVAL.obj = hclS[hclpt-0].obj
-		}
-	case 16:
-		//line parse.y:132
-		{
-			hclVAL.obj = &Object{
-				Key:   hclS[hclpt-1].str,
-				Type:  ValueTypeObject,
-				Value: []*Object{hclS[hclpt-0].obj},
-			}
-		}
-	case 17:
-		//line parse.y:142
-		{
-			hclVAL.str = hclS[hclpt-0].str
-		}
-	case 18:
-		//line parse.y:146
-		{
-			hclVAL.str = hclS[hclpt-0].str
-		}
-	case 19:
-		//line parse.y:152
-		{
-			hclVAL.objlist = hclS[hclpt-1].objlist
-		}
-	case 20:
-		//line parse.y:156
-		{
-			hclVAL.objlist = nil
-		}
-	case 21:
-		//line parse.y:162
-		{
-			hclVAL.objlist = []*Object{hclS[hclpt-0].obj}
-		}
-	case 22:
-		//line parse.y:166
-		{
-			hclVAL.objlist = append(hclS[hclpt-2].objlist, hclS[hclpt-0].obj)
-		}
-	case 23:
-		//line parse.y:170
-		{
-			hclVAL.objlist = hclS[hclpt-1].objlist
-		}
-	case 24:
-		//line parse.y:176
-		{
-			hclVAL.obj = hclS[hclpt-0].obj
-		}
-	case 25:
-		//line parse.y:180
-		{
-			hclVAL.obj = &Object{
-				Type:  ValueTypeString,
-				Value: hclS[hclpt-0].str,
-			}
-		}
-	case 26:
-		//line parse.y:189
-		{
-			hclVAL.obj = &Object{
-				Type:  ValueTypeInt,
-				Value: hclS[hclpt-0].num,
-			}
-		}
-	case 27:
-		//line parse.y:196
-		{
-			hclVAL.obj = &Object{
-				Type:  ValueTypeFloat,
-				Value: hclS[hclpt-0].f,
-			}
-		}
-	case 28:
-		//line parse.y:203
-		{
-			fs := fmt.Sprintf("%d%s", hclS[hclpt-1].num, hclS[hclpt-0].str)
-			f, err := strconv.ParseFloat(fs, 64)
-			if err != nil {
-				panic(err)
-			}
-
-			hclVAL.obj = &Object{
-				Type:  ValueTypeFloat,
-				Value: f,
-			}
-		}
-	case 29:
-		//line parse.y:216
-		{
-			fs := fmt.Sprintf("%f%s", hclS[hclpt-1].f, hclS[hclpt-0].str)
-			f, err := strconv.ParseFloat(fs, 64)
-			if err != nil {
-				panic(err)
-			}
-
-			hclVAL.obj = &Object{
-				Type:  ValueTypeFloat,
-				Value: f,
-			}
-		}
-	case 30:
-		//line parse.y:231
-		{
-			hclVAL.num = hclS[hclpt-0].num * -1
-		}
-	case 31:
-		//line parse.y:235
-		{
-			hclVAL.num = hclS[hclpt-0].num
-		}
-	case 32:
-		//line parse.y:241
-		{
-			hclVAL.f = hclS[hclpt-0].f * -1
-		}
-	case 33:
-		//line parse.y:245
-		{
-			hclVAL.f = hclS[hclpt-0].f
-		}
-	case 34:
-		//line parse.y:251
-		{
-			hclVAL.str = "e" + strconv.FormatInt(int64(hclS[hclpt-0].num), 10)
-		}
-	case 35:
-		//line parse.y:255
-		{
-			hclVAL.str = "e-" + strconv.FormatInt(int64(hclS[hclpt-0].num), 10)
-		}
-	}
-	goto hclstack /* stack new state and value */
-}

Godeps/_workspace/src/github.com/yudai/hcl/decoder.go

@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/hashicorp/hcl/hcl"
+	"github.com/yudai/hcl/hcl"
 )
 
 // This is the tag to use with structures to have settings for HCL
@@ -173,6 +173,8 @@ func (d *decoder) decodeInterface(name string, o *hcl.Object, result reflect.Val
 		set = reflect.Indirect(reflect.New(reflect.TypeOf(result)))
 	case hcl.ValueTypeString:
 		set = reflect.Indirect(reflect.New(reflect.TypeOf("")))
+	case hcl.ValueTypeNil:
+		return nil
 	default:
 		return fmt.Errorf(
 			"%s: cannot decode into interface: %T",
@@ -259,6 +261,10 @@ func (d *decoder) decodeMap(name string, o *hcl.Object, result reflect.Value) er
 func (d *decoder) decodePtr(name string, o *hcl.Object, result reflect.Value) error {
 	// Create an element of the concrete (non pointer) type and decode
 	// into that. Then set the value of the pointer to this type.
+	switch o.Type {
+	case hcl.ValueTypeNil:
+		// NIL
+	default:
 		resultType := result.Type()
 		resultElemType := resultType.Elem()
 		val := reflect.New(resultElemType)
@@ -267,6 +273,7 @@ func (d *decoder) decodePtr(name string, o *hcl.Object, result reflect.Value) er
 		}
 
 		result.Set(val)
+	}
 	return nil
 }
 

Godeps/_workspace/src/github.com/yudai/hcl/hcl/lex.go

@@ -85,7 +85,7 @@ func (x *hclLex) Lex(yylval *hclSymType) int {
 		case '-':
 			return MINUS
 		case ',':
-			return x.lexComma()
+			return COMMA
 		case '=':
 			return EQUAL
 		case '[':
@@ -166,27 +166,6 @@ func (x *hclLex) consumeComment(c rune) bool {
 	}
 }
 
-// lexComma reads the comma
-func (x *hclLex) lexComma() int {
-	for {
-		c := x.peek()
-
-		// Consume space
-		if unicode.IsSpace(c) {
-			x.next()
-			continue
-		}
-
-		if c == ']' {
-			return COMMAEND
-		}
-
-		break
-	}
-
-	return COMMA
-}
-
 // lexId lexes an identifier
 func (x *hclLex) lexId(yylval *hclSymType) int {
 	var b bytes.Buffer
@@ -224,6 +203,8 @@ func (x *hclLex) lexId(yylval *hclSymType) int {
 	case "false":
 		yylval.b = false
 		return BOOL
+	case "null":
+		return NULL
 	}
 
 	return IDENTIFIER

Godeps/_workspace/src/github.com/yudai/hcl/hcl/lex_test.go

@@ -36,7 +36,7 @@ func TestLex(t *testing.T) {
 			"list.hcl",
 			[]int{
 				IDENTIFIER, EQUAL, LEFTBRACKET,
-				NUMBER, COMMA, NUMBER, COMMA, STRING,
+				NUMBER, COMMA, NUMBER, COMMA, STRING, COMMA, BOOL,
 				RIGHTBRACKET, lexEOF,
 			},
 		},
@@ -63,6 +63,24 @@ func TestLex(t *testing.T) {
 				RIGHTBRACE, lexEOF,
 			},
 		},
+		{
+			"array_comment.hcl",
+			[]int{
+				IDENTIFIER, EQUAL, LEFTBRACKET,
+				STRING, COMMA,
+				STRING, COMMA,
+				RIGHTBRACKET, lexEOF,
+			},
+		},
+		{
+			"null.hcl",
+			[]int{
+				IDENTIFIER, EQUAL, NULL,
+				IDENTIFIER, EQUAL, LEFTBRACKET, NUMBER, COMMA, NULL, COMMA, NUMBER, RIGHTBRACKET,
+				IDENTIFIER, LEFTBRACE, IDENTIFIER, EQUAL, NULL, RIGHTBRACE,
+				lexEOF,
+			},
+		},
 	}
 
 	for _, tc := range cases {

Godeps/_workspace/src/github.com/yudai/hcl/hcl/parse.y

@@ -29,9 +29,10 @@ import (
 %token  <b> BOOL
 %token  <f> FLOAT
 %token  <num> NUMBER
-%token  <str> COMMA COMMAEND IDENTIFIER EQUAL NEWLINE STRING MINUS
+%token  <str> COMMA IDENTIFIER EQUAL NEWLINE STRING MINUS
 %token  <str> LEFTBRACE RIGHTBRACE LEFTBRACKET RIGHTBRACKET PERIOD
 %token  <str> EPLUS EMINUS
+%token  <str> NULL
 
 %%
 
@@ -96,6 +97,13 @@ objectitem:
 			Value: $3,
 		}
 	}
+|	objectkey EQUAL NULL
+	{
+		$$ = &Object{
+			Key:   $1,
+			Type:  ValueTypeNil,
+		}
+	}
 |	objectkey EQUAL STRING
 	{
 		$$ = &Object{
@@ -152,6 +160,10 @@ list:
 	{
 		$$ = $2
 	}
+|	LEFTBRACKET listitems COMMA RIGHTBRACKET
+	{
+		$$ = $2
+	}
 |	LEFTBRACKET RIGHTBRACKET
 	{
 		$$ = nil
@@ -166,10 +178,6 @@ listitems:
 	{
 		$$ = append($1, $3)
 	}
-|	listitems COMMAEND
-	{
-		$$ = $1
-	}
 
 listitem:
 	number
@@ -183,6 +191,20 @@ listitem:
 			Value: $1,
 		}
 	}
+|	BOOL
+	{
+		$$ = &Object{
+			Type:  ValueTypeBool,
+			Value: $1,
+		}
+	}
+|	NULL
+	{
+		$$ = &Object{
+			Type:  ValueTypeNil,
+		}
+	}
+
 
 number:
 	int

Godeps/_workspace/src/github.com/yudai/hcl/hcl/parse_test.go

@@ -59,6 +59,14 @@ func TestParse(t *testing.T) {
 			"types.hcl",
 			false,
 		},
+		{
+			"array_comment.hcl",
+			false,
+		},
+		{
+			"null.hcl",
+			false,
+		},
 	}
 
 	for _, tc := range cases {

Godeps/_workspace/src/github.com/yudai/hcl/hcl/test-fixtures/array_comment.hcl

@@ -0,0 +1,4 @@
+foo = [
+    "1",
+    "2", # comment
+]

Godeps/_workspace/src/github.com/yudai/hcl/hcl/test-fixtures/list.hcl

@@ -0,0 +1 @@
+foo = [1, 2, "foo", true]

Godeps/_workspace/src/github.com/yudai/hcl/hcl/test-fixtures/null.hcl

@@ -0,0 +1,5 @@
+foo = null
+bar = [1, null, 3]
+baz {
+    foo = null
+}

Godeps/_workspace/src/github.com/yudai/hcl/hcl/test-fixtures/types.hcl

@@ -5,3 +5,4 @@ foo = -12
 bar = 3.14159
 foo = true
 bar = false
+baz = null

Godeps/_workspace/src/github.com/yudai/hcl/hcl/y.go

@@ -0,0 +1,790 @@
+//line parse.y:4
+package hcl
+
+import __yyfmt__ "fmt"
+
+//line parse.y:4
+import (
+	"fmt"
+	"strconv"
+)
+
+//line parse.y:13
+type hclSymType struct {
+	yys     int
+	b       bool
+	f       float64
+	num     int
+	str     string
+	obj     *Object
+	objlist []*Object
+}
+
+const BOOL = 57346
+const FLOAT = 57347
+const NUMBER = 57348
+const COMMA = 57349
+const IDENTIFIER = 57350
+const EQUAL = 57351
+const NEWLINE = 57352
+const STRING = 57353
+const MINUS = 57354
+const LEFTBRACE = 57355
+const RIGHTBRACE = 57356
+const LEFTBRACKET = 57357
+const RIGHTBRACKET = 57358
+const PERIOD = 57359
+const EPLUS = 57360
+const EMINUS = 57361
+const NULL = 57362
+
+var hclToknames = [...]string{
+	"$end",
+	"error",
+	"$unk",
+	"BOOL",
+	"FLOAT",
+	"NUMBER",
+	"COMMA",
+	"IDENTIFIER",
+	"EQUAL",
+	"NEWLINE",
+	"STRING",
+	"MINUS",
+	"LEFTBRACE",
+	"RIGHTBRACE",
+	"LEFTBRACKET",
+	"RIGHTBRACKET",
+	"PERIOD",
+	"EPLUS",
+	"EMINUS",
+	"NULL",
+}
+var hclStatenames = [...]string{}
+
+const hclEofCode = 1
+const hclErrCode = 2
+const hclMaxDepth = 200
+
+//line parse.y:281
+
+//line yacctab:1
+var hclExca = [...]int{
+	-1, 1,
+	1, -1,
+	-2, 0,
+	-1, 6,
+	9, 7,
+	-2, 18,
+	-1, 7,
+	9, 8,
+	-2, 19,
+}
+
+const hclNprod = 39
+const hclPrivate = 57344
+
+var hclTokenNames []string
+var hclStates []string
+
+const hclLast = 69
+
+var hclAct = [...]int{
+
+	36, 3, 22, 30, 9, 17, 27, 26, 31, 32,
+	45, 23, 19, 25, 13, 10, 24, 39, 27, 26,
+	6, 18, 47, 7, 38, 25, 43, 33, 41, 48,
+	9, 46, 44, 40, 39, 27, 26, 42, 5, 1,
+	14, 38, 25, 15, 2, 13, 35, 12, 49, 6,
+	40, 4, 7, 27, 26, 29, 11, 37, 28, 6,
+	25, 8, 7, 34, 21, 0, 0, 20, 16,
+}
+var hclPact = [...]int{
+
+	51, -1000, 51, -1000, 6, -1000, -1000, -1000, 32, -1000,
+	1, -1000, -1000, 41, -1000, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -10, -10, 30, 48, -1000, -1000, 12, -1000,
+	-1000, 26, 4, -1000, 15, -1000, -1000, -1000, -1000, -1000,
+	-1000, -1000, -1000, -1000, -1000, -1000, -1000, 13, -1000, -1000,
+}
+var hclPgo = [...]int{
+
+	0, 11, 2, 64, 63, 44, 38, 57, 56, 1,
+	0, 61, 3, 51, 39,
+}
+var hclR1 = [...]int{
+
+	0, 14, 14, 5, 5, 8, 8, 13, 13, 9,
+	9, 9, 9, 9, 9, 9, 6, 6, 11, 11,
+	3, 3, 3, 4, 4, 10, 10, 10, 10, 7,
+	7, 7, 7, 2, 2, 1, 1, 12, 12,
+}
+var hclR2 = [...]int{
+
+	0, 0, 1, 1, 2, 3, 2, 1, 1, 3,
+	3, 3, 3, 3, 3, 1, 2, 2, 1, 1,
+	3, 4, 2, 1, 3, 1, 1, 1, 1, 1,
+	1, 2, 2, 2, 1, 2, 1, 2, 2,
+}
+var hclChk = [...]int{
+
+	-1000, -14, -5, -9, -13, -6, 8, 11, -11, -9,
+	9, -8, -6, 13, 8, 11, -7, 4, 20, 11,
+	-8, -3, -2, -1, 15, 12, 6, 5, -5, 14,
+	-12, 18, 19, -12, -4, 16, -10, -7, 11, 4,
+	20, -2, -1, 14, 6, 6, 16, 7, 16, -10,
+}
+var hclDef = [...]int{
+
+	1, -2, 2, 3, 0, 15, -2, -2, 0, 4,
+	0, 16, 17, 0, 18, 19, 9, 10, 11, 12,
+	13, 14, 29, 30, 0, 0, 34, 36, 0, 6,
+	31, 0, 0, 32, 0, 22, 23, 25, 26, 27,
+	28, 33, 35, 5, 37, 38, 20, 0, 21, 24,
+}
+var hclTok1 = [...]int{
+
+	1,
+}
+var hclTok2 = [...]int{
+
+	2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
+	12, 13, 14, 15, 16, 17, 18, 19, 20,
+}
+var hclTok3 = [...]int{
+	0,
+}
+
+var hclErrorMessages = [...]struct {
+	state int
+	token int
+	msg   string
+}{}
+
+//line yaccpar:1
+
+/*	parser for yacc output	*/
+
+var (
+	hclDebug        = 0
+	hclErrorVerbose = false
+)
+
+type hclLexer interface {
+	Lex(lval *hclSymType) int
+	Error(s string)
+}
+
+type hclParser interface {
+	Parse(hclLexer) int
+	Lookahead() int
+}
+
+type hclParserImpl struct {
+	lookahead func() int
+}
+
+func (p *hclParserImpl) Lookahead() int {
+	return p.lookahead()
+}
+
+func hclNewParser() hclParser {
+	p := &hclParserImpl{
+		lookahead: func() int { return -1 },
+	}
+	return p
+}
+
+const hclFlag = -1000
+
+func hclTokname(c int) string {
+	if c >= 1 && c-1 < len(hclToknames) {
+		if hclToknames[c-1] != "" {
+			return hclToknames[c-1]
+		}
+	}
+	return __yyfmt__.Sprintf("tok-%v", c)
+}
+
+func hclStatname(s int) string {
+	if s >= 0 && s < len(hclStatenames) {
+		if hclStatenames[s] != "" {
+			return hclStatenames[s]
+		}
+	}
+	return __yyfmt__.Sprintf("state-%v", s)
+}
+
+func hclErrorMessage(state, lookAhead int) string {
+	const TOKSTART = 4
+
+	if !hclErrorVerbose {
+		return "syntax error"
+	}
+
+	for _, e := range hclErrorMessages {
+		if e.state == state && e.token == lookAhead {
+			return "syntax error: " + e.msg
+		}
+	}
+
+	res := "syntax error: unexpected " + hclTokname(lookAhead)
+
+	// To match Bison, suggest at most four expected tokens.
+	expected := make([]int, 0, 4)
+
+	// Look for shiftable tokens.
+	base := hclPact[state]
+	for tok := TOKSTART; tok-1 < len(hclToknames); tok++ {
+		if n := base + tok; n >= 0 && n < hclLast && hclChk[hclAct[n]] == tok {
+			if len(expected) == cap(expected) {
+				return res
+			}
+			expected = append(expected, tok)
+		}
+	}
+
+	if hclDef[state] == -2 {
+		i := 0
+		for hclExca[i] != -1 || hclExca[i+1] != state {
+			i += 2
+		}
+
+		// Look for tokens that we accept or reduce.
+		for i += 2; hclExca[i] >= 0; i += 2 {
+			tok := hclExca[i]
+			if tok < TOKSTART || hclExca[i+1] == 0 {
+				continue
+			}
+			if len(expected) == cap(expected) {
+				return res
+			}
+			expected = append(expected, tok)
+		}
+
+		// If the default action is to accept or reduce, give up.
+		if hclExca[i+1] != 0 {
+			return res
+		}
+	}
+
+	for i, tok := range expected {
+		if i == 0 {
+			res += ", expecting "
+		} else {
+			res += " or "
+		}
+		res += hclTokname(tok)
+	}
+	return res
+}
+
+func hcllex1(lex hclLexer, lval *hclSymType) (char, token int) {
+	token = 0
+	char = lex.Lex(lval)
+	if char <= 0 {
+		token = hclTok1[0]
+		goto out
+	}
+	if char < len(hclTok1) {
+		token = hclTok1[char]
+		goto out
+	}
+	if char >= hclPrivate {
+		if char < hclPrivate+len(hclTok2) {
+			token = hclTok2[char-hclPrivate]
+			goto out
+		}
+	}
+	for i := 0; i < len(hclTok3); i += 2 {
+		token = hclTok3[i+0]
+		if token == char {
+			token = hclTok3[i+1]
+			goto out
+		}
+	}
+
+out:
+	if token == 0 {
+		token = hclTok2[1] /* unknown char */
+	}
+	if hclDebug >= 3 {
+		__yyfmt__.Printf("lex %s(%d)\n", hclTokname(token), uint(char))
+	}
+	return char, token
+}
+
+func hclParse(hcllex hclLexer) int {
+	return hclNewParser().Parse(hcllex)
+}
+
+func (hclrcvr *hclParserImpl) Parse(hcllex hclLexer) int {
+	var hcln int
+	var hcllval hclSymType
+	var hclVAL hclSymType
+	var hclDollar []hclSymType
+	_ = hclDollar // silence set and not used
+	hclS := make([]hclSymType, hclMaxDepth)
+
+	Nerrs := 0   /* number of errors */
+	Errflag := 0 /* error recovery flag */
+	hclstate := 0
+	hclchar := -1
+	hcltoken := -1 // hclchar translated into internal numbering
+	hclrcvr.lookahead = func() int { return hclchar }
+	defer func() {
+		// Make sure we report no lookahead when not parsing.
+		hclstate = -1
+		hclchar = -1
+		hcltoken = -1
+	}()
+	hclp := -1
+	goto hclstack
+
+ret0:
+	return 0
+
+ret1:
+	return 1
+
+hclstack:
+	/* put a state and value onto the stack */
+	if hclDebug >= 4 {
+		__yyfmt__.Printf("char %v in %v\n", hclTokname(hcltoken), hclStatname(hclstate))
+	}
+
+	hclp++
+	if hclp >= len(hclS) {
+		nyys := make([]hclSymType, len(hclS)*2)
+		copy(nyys, hclS)
+		hclS = nyys
+	}
+	hclS[hclp] = hclVAL
+	hclS[hclp].yys = hclstate
+
+hclnewstate:
+	hcln = hclPact[hclstate]
+	if hcln <= hclFlag {
+		goto hcldefault /* simple state */
+	}
+	if hclchar < 0 {
+		hclchar, hcltoken = hcllex1(hcllex, &hcllval)
+	}
+	hcln += hcltoken
+	if hcln < 0 || hcln >= hclLast {
+		goto hcldefault
+	}
+	hcln = hclAct[hcln]
+	if hclChk[hcln] == hcltoken { /* valid shift */
+		hclchar = -1
+		hcltoken = -1
+		hclVAL = hcllval
+		hclstate = hcln
+		if Errflag > 0 {
+			Errflag--
+		}
+		goto hclstack
+	}
+
+hcldefault:
+	/* default state action */
+	hcln = hclDef[hclstate]
+	if hcln == -2 {
+		if hclchar < 0 {
+			hclchar, hcltoken = hcllex1(hcllex, &hcllval)
+		}
+
+		/* look through exception table */
+		xi := 0
+		for {
+			if hclExca[xi+0] == -1 && hclExca[xi+1] == hclstate {
+				break
+			}
+			xi += 2
+		}
+		for xi += 2; ; xi += 2 {
+			hcln = hclExca[xi+0]
+			if hcln < 0 || hcln == hcltoken {
+				break
+			}
+		}
+		hcln = hclExca[xi+1]
+		if hcln < 0 {
+			goto ret0
+		}
+	}
+	if hcln == 0 {
+		/* error ... attempt to resume parsing */
+		switch Errflag {
+		case 0: /* brand new error */
+			hcllex.Error(hclErrorMessage(hclstate, hcltoken))
+			Nerrs++
+			if hclDebug >= 1 {
+				__yyfmt__.Printf("%s", hclStatname(hclstate))
+				__yyfmt__.Printf(" saw %s\n", hclTokname(hcltoken))
+			}
+			fallthrough
+
+		case 1, 2: /* incompletely recovered error ... try again */
+			Errflag = 3
+
+			/* find a state where "error" is a legal shift action */
+			for hclp >= 0 {
+				hcln = hclPact[hclS[hclp].yys] + hclErrCode
+				if hcln >= 0 && hcln < hclLast {
+					hclstate = hclAct[hcln] /* simulate a shift of "error" */
+					if hclChk[hclstate] == hclErrCode {
+						goto hclstack
+					}
+				}
+
+				/* the current p has no shift on "error", pop stack */
+				if hclDebug >= 2 {
+					__yyfmt__.Printf("error recovery pops state %d\n", hclS[hclp].yys)
+				}
+				hclp--
+			}
+			/* there is no state on the stack with an error shift ... abort */
+			goto ret1
+
+		case 3: /* no shift yet; clobber input char */
+			if hclDebug >= 2 {
+				__yyfmt__.Printf("error recovery discards %s\n", hclTokname(hcltoken))
+			}
+			if hcltoken == hclEofCode {
+				goto ret1
+			}
+			hclchar = -1
+			hcltoken = -1
+			goto hclnewstate /* try again in the same state */
+		}
+	}
+
+	/* reduction by production hcln */
+	if hclDebug >= 2 {
+		__yyfmt__.Printf("reduce %v in:\n\t%v\n", hcln, hclStatname(hclstate))
+	}
+
+	hclnt := hcln
+	hclpt := hclp
+	_ = hclpt // guard against "declared and not used"
+
+	hclp -= hclR2[hcln]
+	// hclp is now the index of $0. Perform the default action. Iff the
+	// reduced production is ε, $1 is possibly out of range.
+	if hclp+1 >= len(hclS) {
+		nyys := make([]hclSymType, len(hclS)*2)
+		copy(nyys, hclS)
+		hclS = nyys
+	}
+	hclVAL = hclS[hclp+1]
+
+	/* consult goto table to find next state */
+	hcln = hclR1[hcln]
+	hclg := hclPgo[hcln]
+	hclj := hclg + hclS[hclp].yys + 1
+
+	if hclj >= hclLast {
+		hclstate = hclAct[hclg]
+	} else {
+		hclstate = hclAct[hclj]
+		if hclChk[hclstate] != -hcln {
+			hclstate = hclAct[hclg]
+		}
+	}
+	// dummy call; replaced with literal code
+	switch hclnt {
+
+	case 1:
+		hclDollar = hclS[hclpt-0 : hclpt+1]
+		//line parse.y:40
+		{
+			hclResult = &Object{Type: ValueTypeObject}
+		}
+	case 2:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:44
+		{
+			hclResult = &Object{
+				Type:  ValueTypeObject,
+				Value: ObjectList(hclDollar[1].objlist).Flat(),
+			}
+		}
+	case 3:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:53
+		{
+			hclVAL.objlist = []*Object{hclDollar[1].obj}
+		}
+	case 4:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:57
+		{
+			hclVAL.objlist = append(hclDollar[1].objlist, hclDollar[2].obj)
+		}
+	case 5:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:63
+		{
+			hclVAL.obj = &Object{
+				Type:  ValueTypeObject,
+				Value: ObjectList(hclDollar[2].objlist).Flat(),
+			}
+		}
+	case 6:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:70
+		{
+			hclVAL.obj = &Object{
+				Type: ValueTypeObject,
+			}
+		}
+	case 7:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:78
+		{
+			hclVAL.str = hclDollar[1].str
+		}
+	case 8:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:82
+		{
+			hclVAL.str = hclDollar[1].str
+		}
+	case 9:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:88
+		{
+			hclVAL.obj = hclDollar[3].obj
+			hclVAL.obj.Key = hclDollar[1].str
+		}
+	case 10:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:93
+		{
+			hclVAL.obj = &Object{
+				Key:   hclDollar[1].str,
+				Type:  ValueTypeBool,
+				Value: hclDollar[3].b,
+			}
+		}
+	case 11:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:101
+		{
+			hclVAL.obj = &Object{
+				Key:  hclDollar[1].str,
+				Type: ValueTypeNil,
+			}
+		}
+	case 12:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:108
+		{
+			hclVAL.obj = &Object{
+				Key:   hclDollar[1].str,
+				Type:  ValueTypeString,
+				Value: hclDollar[3].str,
+			}
+		}
+	case 13:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:116
+		{
+			hclDollar[3].obj.Key = hclDollar[1].str
+			hclVAL.obj = hclDollar[3].obj
+		}
+	case 14:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:121
+		{
+			hclVAL.obj = &Object{
+				Key:   hclDollar[1].str,
+				Type:  ValueTypeList,
+				Value: hclDollar[3].objlist,
+			}
+		}
+	case 15:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:129
+		{
+			hclVAL.obj = hclDollar[1].obj
+		}
+	case 16:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:135
+		{
+			hclDollar[2].obj.Key = hclDollar[1].str
+			hclVAL.obj = hclDollar[2].obj
+		}
+	case 17:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:140
+		{
+			hclVAL.obj = &Object{
+				Key:   hclDollar[1].str,
+				Type:  ValueTypeObject,
+				Value: []*Object{hclDollar[2].obj},
+			}
+		}
+	case 18:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:150
+		{
+			hclVAL.str = hclDollar[1].str
+		}
+	case 19:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:154
+		{
+			hclVAL.str = hclDollar[1].str
+		}
+	case 20:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:160
+		{
+			hclVAL.objlist = hclDollar[2].objlist
+		}
+	case 21:
+		hclDollar = hclS[hclpt-4 : hclpt+1]
+		//line parse.y:164
+		{
+			hclVAL.objlist = hclDollar[2].objlist
+		}
+	case 22:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:168
+		{
+			hclVAL.objlist = nil
+		}
+	case 23:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:174
+		{
+			hclVAL.objlist = []*Object{hclDollar[1].obj}
+		}
+	case 24:
+		hclDollar = hclS[hclpt-3 : hclpt+1]
+		//line parse.y:178
+		{
+			hclVAL.objlist = append(hclDollar[1].objlist, hclDollar[3].obj)
+		}
+	case 25:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:184
+		{
+			hclVAL.obj = hclDollar[1].obj
+		}
+	case 26:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:188
+		{
+			hclVAL.obj = &Object{
+				Type:  ValueTypeString,
+				Value: hclDollar[1].str,
+			}
+		}
+	case 27:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:195
+		{
+			hclVAL.obj = &Object{
+				Type:  ValueTypeBool,
+				Value: hclDollar[1].b,
+			}
+		}
+	case 28:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:202
+		{
+			hclVAL.obj = &Object{
+				Type: ValueTypeNil,
+			}
+		}
+	case 29:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:211
+		{
+			hclVAL.obj = &Object{
+				Type:  ValueTypeInt,
+				Value: hclDollar[1].num,
+			}
+		}
+	case 30:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:218
+		{
+			hclVAL.obj = &Object{
+				Type:  ValueTypeFloat,
+				Value: hclDollar[1].f,
+			}
+		}
+	case 31:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:225
+		{
+			fs := fmt.Sprintf("%d%s", hclDollar[1].num, hclDollar[2].str)
+			f, err := strconv.ParseFloat(fs, 64)
+			if err != nil {
+				panic(err)
+			}
+
+			hclVAL.obj = &Object{
+				Type:  ValueTypeFloat,
+				Value: f,
+			}
+		}
+	case 32:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:238
+		{
+			fs := fmt.Sprintf("%f%s", hclDollar[1].f, hclDollar[2].str)
+			f, err := strconv.ParseFloat(fs, 64)
+			if err != nil {
+				panic(err)
+			}
+
+			hclVAL.obj = &Object{
+				Type:  ValueTypeFloat,
+				Value: f,
+			}
+		}
+	case 33:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:253
+		{
+			hclVAL.num = hclDollar[2].num * -1
+		}
+	case 34:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:257
+		{
+			hclVAL.num = hclDollar[1].num
+		}
+	case 35:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:263
+		{
+			hclVAL.f = hclDollar[2].f * -1
+		}
+	case 36:
+		hclDollar = hclS[hclpt-1 : hclpt+1]
+		//line parse.y:267
+		{
+			hclVAL.f = hclDollar[1].f
+		}
+	case 37:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:273
+		{
+			hclVAL.str = "e" + strconv.FormatInt(int64(hclDollar[2].num), 10)
+		}
+	case 38:
+		hclDollar = hclS[hclpt-2 : hclpt+1]
+		//line parse.y:277
+		{
+			hclVAL.str = "e-" + strconv.FormatInt(int64(hclDollar[2].num), 10)
+		}
+	}
+	goto hclstack /* stack new state and value */
+}

Godeps/_workspace/src/github.com/yudai/hcl/json/parse.go

@@ -3,7 +3,7 @@ package json
 import (
 	"sync"
 
-	"github.com/hashicorp/hcl/hcl"
+	"github.com/yudai/hcl/hcl"
 	"github.com/hashicorp/go-multierror"
 )
 

Godeps/_workspace/src/github.com/yudai/hcl/json/y.go

@@ -8,7 +8,7 @@ import (
 	"fmt"
 	"strconv"
 
-	"github.com/hashicorp/hcl/hcl"
+	"github.com/yudai/hcl/hcl"
 )
 
 //line parse.y:15
@@ -41,7 +41,10 @@ const PERIOD = 57362
 const EPLUS = 57363
 const EMINUS = 57364
 
-var jsonToknames = []string{
+var jsonToknames = [...]string{
+	"$end",
+	"error",
+	"$unk",
 	"FLOAT",
 	"NUMBER",
 	"COLON",
@@ -62,7 +65,7 @@ var jsonToknames = []string{
 	"EPLUS",
 	"EMINUS",
 }
-var jsonStatenames = []string{}
+var jsonStatenames = [...]string{}
 
 const jsonEofCode = 1
 const jsonErrCode = 2
@@ -71,7 +74,7 @@ const jsonMaxDepth = 200
 //line parse.y:210
 
 //line yacctab:1
-var jsonExca = []int{
+var jsonExca = [...]int{
 	-1, 1,
 	1, -1,
 	-2, 0,
@@ -85,7 +88,7 @@ var jsonStates []string
 
 const jsonLast = 53
 
-var jsonAct = []int{
+var jsonAct = [...]int{
 
 	12, 25, 24, 3, 20, 27, 28, 7, 13, 3,
 	21, 22, 30, 17, 18, 19, 23, 25, 24, 26,
@@ -94,76 +97,104 @@ var jsonAct = []int{
 	5, 29, 6, 8, 37, 15, 2, 1, 4, 31,
 	16, 14, 11,
 }
-var jsonPact = []int{
+var jsonPact = [...]int{
 
 	-9, -1000, -1000, 27, 30, -1000, -1000, 20, -1000, -4,
 	13, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000, -1000,
 	-16, -16, -3, 16, -1000, -1000, -1000, 28, 17, -1000,
 	-1000, 29, -1000, -1000, -1000, -1000, -1000, -1000, 13, -1000,
 }
-var jsonPgo = []int{
+var jsonPgo = [...]int{
 
 	0, 10, 4, 51, 45, 42, 0, 50, 49, 48,
 	19, 47,
 }
-var jsonR1 = []int{
+var jsonR1 = [...]int{
 
 	0, 11, 4, 4, 9, 9, 5, 6, 6, 6,
 	6, 6, 6, 6, 7, 7, 8, 8, 3, 3,
 	3, 3, 2, 2, 1, 1, 10, 10,
 }
-var jsonR2 = []int{
+var jsonR2 = [...]int{
 
 	0, 1, 3, 2, 1, 3, 3, 1, 1, 1,
 	1, 1, 1, 1, 2, 3, 1, 3, 1, 1,
 	2, 2, 2, 1, 2, 1, 2, 2,
 }
-var jsonChk = []int{
+var jsonChk = [...]int{
 
 	-1000, -11, -4, 12, -9, 13, -5, 11, 13, 7,
 	6, -5, -6, 11, -3, -4, -7, 16, 17, 18,
 	-2, -1, 14, 19, 5, 4, -10, 21, 22, -10,
 	15, -8, -6, -2, -1, 5, 5, 15, 7, -6,
 }
-var jsonDef = []int{
+var jsonDef = [...]int{
 
 	0, -2, 1, 0, 0, 3, 4, 0, 2, 0,
 	0, 5, 6, 7, 8, 9, 10, 11, 12, 13,
 	18, 19, 0, 0, 23, 25, 20, 0, 0, 21,
 	14, 0, 16, 22, 24, 26, 27, 15, 0, 17,
 }
-var jsonTok1 = []int{
+var jsonTok1 = [...]int{
 
 	1,
 }
-var jsonTok2 = []int{
+var jsonTok2 = [...]int{
 
 	2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
 	12, 13, 14, 15, 16, 17, 18, 19, 20, 21,
 	22,
 }
-var jsonTok3 = []int{
+var jsonTok3 = [...]int{
 	0,
 }
 
+var jsonErrorMessages = [...]struct {
+	state int
+	token int
+	msg   string
+}{}
+
 //line yaccpar:1
 
 /*	parser for yacc output	*/
 
-var jsonDebug = 0
+var (
+	jsonDebug        = 0
+	jsonErrorVerbose = false
+)
 
 type jsonLexer interface {
 	Lex(lval *jsonSymType) int
 	Error(s string)
 }
 
+type jsonParser interface {
+	Parse(jsonLexer) int
+	Lookahead() int
+}
+
+type jsonParserImpl struct {
+	lookahead func() int
+}
+
+func (p *jsonParserImpl) Lookahead() int {
+	return p.lookahead()
+}
+
+func jsonNewParser() jsonParser {
+	p := &jsonParserImpl{
+		lookahead: func() int { return -1 },
+	}
+	return p
+}
+
 const jsonFlag = -1000
 
 func jsonTokname(c int) string {
-	// 4 is TOKSTART above
-	if c >= 4 && c-4 < len(jsonToknames) {
-		if jsonToknames[c-4] != "" {
-			return jsonToknames[c-4]
+	if c >= 1 && c-1 < len(jsonToknames) {
+		if jsonToknames[c-1] != "" {
+			return jsonToknames[c-1]
 		}
 	}
 	return __yyfmt__.Sprintf("tok-%v", c)
@@ -178,51 +209,129 @@ func jsonStatname(s int) string {
 	return __yyfmt__.Sprintf("state-%v", s)
 }
 
-func jsonlex1(lex jsonLexer, lval *jsonSymType) int {
-	c := 0
-	char := lex.Lex(lval)
+func jsonErrorMessage(state, lookAhead int) string {
+	const TOKSTART = 4
+
+	if !jsonErrorVerbose {
+		return "syntax error"
+	}
+
+	for _, e := range jsonErrorMessages {
+		if e.state == state && e.token == lookAhead {
+			return "syntax error: " + e.msg
+		}
+	}
+
+	res := "syntax error: unexpected " + jsonTokname(lookAhead)
+
+	// To match Bison, suggest at most four expected tokens.
+	expected := make([]int, 0, 4)
+
+	// Look for shiftable tokens.
+	base := jsonPact[state]
+	for tok := TOKSTART; tok-1 < len(jsonToknames); tok++ {
+		if n := base + tok; n >= 0 && n < jsonLast && jsonChk[jsonAct[n]] == tok {
+			if len(expected) == cap(expected) {
+				return res
+			}
+			expected = append(expected, tok)
+		}
+	}
+
+	if jsonDef[state] == -2 {
+		i := 0
+		for jsonExca[i] != -1 || jsonExca[i+1] != state {
+			i += 2
+		}
+
+		// Look for tokens that we accept or reduce.
+		for i += 2; jsonExca[i] >= 0; i += 2 {
+			tok := jsonExca[i]
+			if tok < TOKSTART || jsonExca[i+1] == 0 {
+				continue
+			}
+			if len(expected) == cap(expected) {
+				return res
+			}
+			expected = append(expected, tok)
+		}
+
+		// If the default action is to accept or reduce, give up.
+		if jsonExca[i+1] != 0 {
+			return res
+		}
+	}
+
+	for i, tok := range expected {
+		if i == 0 {
+			res += ", expecting "
+		} else {
+			res += " or "
+		}
+		res += jsonTokname(tok)
+	}
+	return res
+}
+
+func jsonlex1(lex jsonLexer, lval *jsonSymType) (char, token int) {
+	token = 0
+	char = lex.Lex(lval)
 	if char <= 0 {
-		c = jsonTok1[0]
+		token = jsonTok1[0]
 		goto out
 	}
 	if char < len(jsonTok1) {
-		c = jsonTok1[char]
+		token = jsonTok1[char]
 		goto out
 	}
 	if char >= jsonPrivate {
 		if char < jsonPrivate+len(jsonTok2) {
-			c = jsonTok2[char-jsonPrivate]
+			token = jsonTok2[char-jsonPrivate]
 			goto out
 		}
 	}
 	for i := 0; i < len(jsonTok3); i += 2 {
-		c = jsonTok3[i+0]
-		if c == char {
-			c = jsonTok3[i+1]
+		token = jsonTok3[i+0]
+		if token == char {
+			token = jsonTok3[i+1]
 			goto out
 		}
 	}
 
 out:
-	if c == 0 {
-		c = jsonTok2[1] /* unknown char */
+	if token == 0 {
+		token = jsonTok2[1] /* unknown char */
 	}
 	if jsonDebug >= 3 {
-		__yyfmt__.Printf("lex %s(%d)\n", jsonTokname(c), uint(char))
+		__yyfmt__.Printf("lex %s(%d)\n", jsonTokname(token), uint(char))
 	}
-	return c
+	return char, token
 }
 
 func jsonParse(jsonlex jsonLexer) int {
+	return jsonNewParser().Parse(jsonlex)
+}
+
+func (jsonrcvr *jsonParserImpl) Parse(jsonlex jsonLexer) int {
 	var jsonn int
 	var jsonlval jsonSymType
 	var jsonVAL jsonSymType
+	var jsonDollar []jsonSymType
+	_ = jsonDollar // silence set and not used
 	jsonS := make([]jsonSymType, jsonMaxDepth)
 
 	Nerrs := 0   /* number of errors */
 	Errflag := 0 /* error recovery flag */
 	jsonstate := 0
 	jsonchar := -1
+	jsontoken := -1 // jsonchar translated into internal numbering
+	jsonrcvr.lookahead = func() int { return jsonchar }
+	defer func() {
+		// Make sure we report no lookahead when not parsing.
+		jsonstate = -1
+		jsonchar = -1
+		jsontoken = -1
+	}()
 	jsonp := -1
 	goto jsonstack
 
@@ -235,7 +344,7 @@ ret1:
 jsonstack:
 	/* put a state and value onto the stack */
 	if jsonDebug >= 4 {
-		__yyfmt__.Printf("char %v in %v\n", jsonTokname(jsonchar), jsonStatname(jsonstate))
+		__yyfmt__.Printf("char %v in %v\n", jsonTokname(jsontoken), jsonStatname(jsonstate))
 	}
 
 	jsonp++
@@ -253,15 +362,16 @@ jsonnewstate:
 		goto jsondefault /* simple state */
 	}
 	if jsonchar < 0 {
-		jsonchar = jsonlex1(jsonlex, &jsonlval)
+		jsonchar, jsontoken = jsonlex1(jsonlex, &jsonlval)
 	}
-	jsonn += jsonchar
+	jsonn += jsontoken
 	if jsonn < 0 || jsonn >= jsonLast {
 		goto jsondefault
 	}
 	jsonn = jsonAct[jsonn]
-	if jsonChk[jsonn] == jsonchar { /* valid shift */
+	if jsonChk[jsonn] == jsontoken { /* valid shift */
 		jsonchar = -1
+		jsontoken = -1
 		jsonVAL = jsonlval
 		jsonstate = jsonn
 		if Errflag > 0 {
@@ -275,7 +385,7 @@ jsondefault:
 	jsonn = jsonDef[jsonstate]
 	if jsonn == -2 {
 		if jsonchar < 0 {
-			jsonchar = jsonlex1(jsonlex, &jsonlval)
+			jsonchar, jsontoken = jsonlex1(jsonlex, &jsonlval)
 		}
 
 		/* look through exception table */
@@ -288,7 +398,7 @@ jsondefault:
 		}
 		for xi += 2; ; xi += 2 {
 			jsonn = jsonExca[xi+0]
-			if jsonn < 0 || jsonn == jsonchar {
+			if jsonn < 0 || jsonn == jsontoken {
 				break
 			}
 		}
@@ -301,11 +411,11 @@ jsondefault:
 		/* error ... attempt to resume parsing */
 		switch Errflag {
 		case 0: /* brand new error */
-			jsonlex.Error("syntax error")
+			jsonlex.Error(jsonErrorMessage(jsonstate, jsontoken))
 			Nerrs++
 			if jsonDebug >= 1 {
 				__yyfmt__.Printf("%s", jsonStatname(jsonstate))
-				__yyfmt__.Printf(" saw %s\n", jsonTokname(jsonchar))
+				__yyfmt__.Printf(" saw %s\n", jsonTokname(jsontoken))
 			}
 			fallthrough
 
@@ -333,12 +443,13 @@ jsondefault:
 
 		case 3: /* no shift yet; clobber input char */
 			if jsonDebug >= 2 {
-				__yyfmt__.Printf("error recovery discards %s\n", jsonTokname(jsonchar))
+				__yyfmt__.Printf("error recovery discards %s\n", jsonTokname(jsontoken))
 			}
-			if jsonchar == jsonEofCode {
+			if jsontoken == jsonEofCode {
 				goto ret1
 			}
 			jsonchar = -1
+			jsontoken = -1
 			goto jsonnewstate /* try again in the same state */
 		}
 	}
@@ -353,6 +464,13 @@ jsondefault:
 	_ = jsonpt // guard against "declared and not used"
 
 	jsonp -= jsonR2[jsonn]
+	// jsonp is now the index of $0. Perform the default action. Iff the
+	// reduced production is ε, $1 is possibly out of range.
+	if jsonp+1 >= len(jsonS) {
+		nyys := make([]jsonSymType, len(jsonS)*2)
+		copy(nyys, jsonS)
+		jsonS = nyys
+	}
 	jsonVAL = jsonS[jsonp+1]
 
 	/* consult goto table to find next state */
@@ -372,66 +490,77 @@ jsondefault:
 	switch jsonnt {
 
 	case 1:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:39
 		{
-			jsonResult = jsonS[jsonpt-0].obj
+			jsonResult = jsonDollar[1].obj
 		}
 	case 2:
+		jsonDollar = jsonS[jsonpt-3 : jsonpt+1]
 		//line parse.y:45
 		{
 			jsonVAL.obj = &hcl.Object{
 				Type:  hcl.ValueTypeObject,
-				Value: hcl.ObjectList(jsonS[jsonpt-1].objlist).Flat(),
+				Value: hcl.ObjectList(jsonDollar[2].objlist).Flat(),
 			}
 		}
 	case 3:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:52
 		{
 			jsonVAL.obj = &hcl.Object{Type: hcl.ValueTypeObject}
 		}
 	case 4:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:58
 		{
-			jsonVAL.objlist = []*hcl.Object{jsonS[jsonpt-0].obj}
+			jsonVAL.objlist = []*hcl.Object{jsonDollar[1].obj}
 		}
 	case 5:
+		jsonDollar = jsonS[jsonpt-3 : jsonpt+1]
 		//line parse.y:62
 		{
-			jsonVAL.objlist = append(jsonS[jsonpt-2].objlist, jsonS[jsonpt-0].obj)
+			jsonVAL.objlist = append(jsonDollar[1].objlist, jsonDollar[3].obj)
 		}
 	case 6:
+		jsonDollar = jsonS[jsonpt-3 : jsonpt+1]
 		//line parse.y:68
 		{
-			jsonS[jsonpt-0].obj.Key = jsonS[jsonpt-2].str
-			jsonVAL.obj = jsonS[jsonpt-0].obj
+			jsonDollar[3].obj.Key = jsonDollar[1].str
+			jsonVAL.obj = jsonDollar[3].obj
 		}
 	case 7:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:75
 		{
 			jsonVAL.obj = &hcl.Object{
 				Type:  hcl.ValueTypeString,
-				Value: jsonS[jsonpt-0].str,
+				Value: jsonDollar[1].str,
 			}
 		}
 	case 8:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:82
 		{
-			jsonVAL.obj = jsonS[jsonpt-0].obj
+			jsonVAL.obj = jsonDollar[1].obj
 		}
 	case 9:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:86
 		{
-			jsonVAL.obj = jsonS[jsonpt-0].obj
+			jsonVAL.obj = jsonDollar[1].obj
 		}
 	case 10:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:90
 		{
 			jsonVAL.obj = &hcl.Object{
 				Type:  hcl.ValueTypeList,
-				Value: jsonS[jsonpt-0].objlist,
+				Value: jsonDollar[1].objlist,
 			}
 		}
 	case 11:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:97
 		{
 			jsonVAL.obj = &hcl.Object{
@@ -440,6 +569,7 @@ jsondefault:
 			}
 		}
 	case 12:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:104
 		{
 			jsonVAL.obj = &hcl.Object{
@@ -448,6 +578,7 @@ jsondefault:
 			}
 		}
 	case 13:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:111
 		{
 			jsonVAL.obj = &hcl.Object{
@@ -456,45 +587,52 @@ jsondefault:
 			}
 		}
 	case 14:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:120
 		{
 			jsonVAL.objlist = nil
 		}
 	case 15:
+		jsonDollar = jsonS[jsonpt-3 : jsonpt+1]
 		//line parse.y:124
 		{
-			jsonVAL.objlist = jsonS[jsonpt-1].objlist
+			jsonVAL.objlist = jsonDollar[2].objlist
 		}
 	case 16:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:130
 		{
-			jsonVAL.objlist = []*hcl.Object{jsonS[jsonpt-0].obj}
+			jsonVAL.objlist = []*hcl.Object{jsonDollar[1].obj}
 		}
 	case 17:
+		jsonDollar = jsonS[jsonpt-3 : jsonpt+1]
 		//line parse.y:134
 		{
-			jsonVAL.objlist = append(jsonS[jsonpt-2].objlist, jsonS[jsonpt-0].obj)
+			jsonVAL.objlist = append(jsonDollar[1].objlist, jsonDollar[3].obj)
 		}
 	case 18:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:140
 		{
 			jsonVAL.obj = &hcl.Object{
 				Type:  hcl.ValueTypeInt,
-				Value: jsonS[jsonpt-0].num,
+				Value: jsonDollar[1].num,
 			}
 		}
 	case 19:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:147
 		{
 			jsonVAL.obj = &hcl.Object{
 				Type:  hcl.ValueTypeFloat,
-				Value: jsonS[jsonpt-0].f,
+				Value: jsonDollar[1].f,
 			}
 		}
 	case 20:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:154
 		{
-			fs := fmt.Sprintf("%d%s", jsonS[jsonpt-1].num, jsonS[jsonpt-0].str)
+			fs := fmt.Sprintf("%d%s", jsonDollar[1].num, jsonDollar[2].str)
 			f, err := strconv.ParseFloat(fs, 64)
 			if err != nil {
 				panic(err)
@@ -506,9 +644,10 @@ jsondefault:
 			}
 		}
 	case 21:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:167
 		{
-			fs := fmt.Sprintf("%f%s", jsonS[jsonpt-1].f, jsonS[jsonpt-0].str)
+			fs := fmt.Sprintf("%f%s", jsonDollar[1].f, jsonDollar[2].str)
 			f, err := strconv.ParseFloat(fs, 64)
 			if err != nil {
 				panic(err)
@@ -520,34 +659,40 @@ jsondefault:
 			}
 		}
 	case 22:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:182
 		{
-			jsonVAL.num = jsonS[jsonpt-0].num * -1
+			jsonVAL.num = jsonDollar[2].num * -1
 		}
 	case 23:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:186
 		{
-			jsonVAL.num = jsonS[jsonpt-0].num
+			jsonVAL.num = jsonDollar[1].num
 		}
 	case 24:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:192
 		{
-			jsonVAL.f = jsonS[jsonpt-0].f * -1
+			jsonVAL.f = jsonDollar[2].f * -1
 		}
 	case 25:
+		jsonDollar = jsonS[jsonpt-1 : jsonpt+1]
 		//line parse.y:196
 		{
-			jsonVAL.f = jsonS[jsonpt-0].f
+			jsonVAL.f = jsonDollar[1].f
 		}
 	case 26:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:202
 		{
-			jsonVAL.str = "e" + strconv.FormatInt(int64(jsonS[jsonpt-0].num), 10)
+			jsonVAL.str = "e" + strconv.FormatInt(int64(jsonDollar[2].num), 10)
 		}
 	case 27:
+		jsonDollar = jsonS[jsonpt-2 : jsonpt+1]
 		//line parse.y:206
 		{
-			jsonVAL.str = "e-" + strconv.FormatInt(int64(jsonS[jsonpt-0].num), 10)
+			jsonVAL.str = "e-" + strconv.FormatInt(int64(jsonDollar[2].num), 10)
 		}
 	}
 	goto jsonstack /* stack new state and value */

Godeps/_workspace/src/github.com/yudai/hcl/parse.go

@@ -3,8 +3,8 @@ package hcl
 import (
 	"fmt"
 
-	"github.com/hashicorp/hcl/hcl"
-	"github.com/hashicorp/hcl/json"
+	"github.com/yudai/hcl/hcl"
+	"github.com/yudai/hcl/json"
 )
 
 // Parse parses the given input and returns the root object.

Godeps/_workspace/src/github.com/yudai/hcl/test-fixtures/null.hcl

@@ -0,0 +1 @@
+foo = null

app/app.go

@@ -23,8 +23,8 @@ import (
 	"github.com/braintree/manners"
 	"github.com/elazarl/go-bindata-assetfs"
 	"github.com/gorilla/websocket"
-	"github.com/hashicorp/hcl"
 	"github.com/kr/pty"
+	"github.com/yudai/hcl"
 	"github.com/yudai/umutex"
 )
 
@@ -64,7 +64,8 @@ type Options struct {
 	ReconnectTime       int                    `hcl:"reconnect_time"`
 	Once                bool                   `hcl:"once"`
 	PermitArguments     bool                   `hcl:"permit_arguments"`
-	Preferences         map[string]interface{} `hcl:"preferences"`
+	Preferences         HtermPrefernces        `hcl:"preferences"`
+	RawPreferences      map[string]interface{} `hcl:"preferences"`
 }
 
 var Version = "0.0.11"
@@ -87,7 +88,7 @@ var DefaultOptions = Options{
 	EnableReconnect:     false,
 	ReconnectTime:       10,
 	Once:                false,
-	Preferences:         make(map[string]interface{}),
+	Preferences:         HtermPrefernces{},
 }
 
 func New(command []string, options *Options) (*App, error) {

app/client_context.go

@@ -13,6 +13,7 @@ import (
 	"syscall"
 	"unsafe"
 
+	"github.com/fatih/structs"
 	"github.com/gorilla/websocket"
 )
 
@@ -128,11 +129,20 @@ func (context *clientContext) sendInitialize() error {
 		return err
 	}
 
+	prefStruct := structs.New(context.app.options.Preferences)
+	prefMap := prefStruct.Map()
 	htermPrefs := make(map[string]interface{})
-	for key, value := range context.app.options.Preferences {
-		htermPrefs[strings.Replace(key, "_", "-", -1)] = value
+	for key, value := range prefMap {
+		rawKey := prefStruct.Field(key).Tag("hcl")
+		if _, ok := context.app.options.RawPreferences[rawKey]; ok {
+			htermPrefs[strings.Replace(rawKey, "_", "-", -1)] = value
 		}
-	prefs, _ := json.Marshal(htermPrefs)
+	}
+	prefs, err := json.Marshal(htermPrefs)
+	if err != nil {
+		return err
+	}
+
 	if err := context.write(append([]byte{SetPreferences}, prefs...)); err != nil {
 		return err
 	}

app/hterm_preferences.go

@@ -0,0 +1,58 @@
+package app
+
+type HtermPrefernces struct {
+	AltGrMode                     *string                      `hcl:"alt_gr_mode"`
+	AltBackspaceIsMetaBackspace   bool                         `hcl:"alt_backspace_is_meta_backspace"`
+	AltIsMeta                     bool                         `hcl:"alt_is_meta"`
+	AltSendsWhat                  string                       `hcl:"alt_sends_what"`
+	AudibleBellSound              string                       `hcl:"audible_bell_sound"`
+	DesktopNotificationBell       bool                         `hcl:"desktop_notification_bell"`
+	BackgroundColor               string                       `hcl:"background_color"`
+	BackgroundImage               string                       `hcl:"background_image"`
+	BackgroundSize                string                       `hcl:"background_size"`
+	BackgroundPosition            string                       `hcl:"background_position"`
+	BackspaceSendsBackspace       bool                         `hcl:"backspace_sends_backspace"`
+	CharacterMapOverrides         map[string]map[string]string `hcl:"character_map_overrides"`
+	CloseOnExit                   bool                         `hcl:"close_on_exit"`
+	CursorBlink                   bool                         `hcl:"cursor_blink"`
+	CursorBlinkCycle              [2]int                       `hcl:"cursor_blink_cycle"`
+	CursorColor                   string                       `hcl:"cursor_color"`
+	ColorPaletteOverrides         []*string                    `hcl:"color_palette_overrides"`
+	CopyOnSelect                  bool                         `hcl:"copy_on_select"`
+	UseDefaultWindowCopy          bool                         `hcl:"use_default_window_copy"`
+	ClearSelectionAfterCopy       bool                         `hcl:"clear_selection_after_copy"`
+	CtrlPlusMinusZeroZoom         bool                         `hcl:"ctrl_plus_minus_zero_zoom"`
+	CtrlCCopy                     bool                         `hcl:"ctrl_c_copy"`
+	CtrlVPaste                    bool                         `hcl:"ctrl_v_paste"`
+	EastAsianAmbiguousAsTwoColumn bool                         `hcl:"east_asian_ambiguous_as_two_column"`
+	Enable8BitControl             *bool                        `hcl:"enable_8_bit_control"`
+	EnableBold                    *bool                        `hcl:"enable_bold"`
+	EnableBoldAsBright            bool                         `hcl:"enable_bold_as_bright"`
+	EnableClipboardNotice         bool                         `hcl:"enable_clipboard_notice"`
+	EnableClipboardWrite          bool                         `hcl:"enable_clipboard_write"`
+	EnableDec12                   bool                         `hcl:"enable_dec12"`
+	Environment                   map[string]string            `hcl:"environment"`
+	FontFamily                    string                       `hcl:"font_family"`
+	FontSize                      int                          `hcl:"font_size"`
+	FontSmoothing                 string                       `hcl:"font_smoothing"`
+	ForegroundColor               string                       `hcl:"foreground_color"`
+	HomeKeysScroll                bool                         `hcl:"home_keys_scroll"`
+	Keybindings                   map[string]string            `hcl:"keybindings"`
+	MaxStringSequence             int                          `hcl:"max_string_sequence"`
+	MediaKeysAreFkeys             bool                         `hcl:"media_keys_are_fkeys"`
+	MetaSendsEscape               bool                         `hcl:"meta_sends_escape"`
+	MousePasteButton              *int                         `hcl:"mouse_paste_button"`
+	PageKeysScroll                bool                         `hcl:"page_keys_scroll"`
+	PassAltNumber                 *bool                        `hcl:"pass_alt_number"`
+	PassCtrlNumber                *bool                        `hcl:"pass_ctrl_number"`
+	PassMetaNumber                *bool                        `hcl:"pass_meta_number"`
+	PassMetaV                     bool                         `hcl:"pass_meta_v"`
+	ReceiveEncoding               string                       `hcl:"receive_encoding"`
+	ScrollOnKeystroke             bool                         `hcl:"scroll_on_keystroke"`
+	ScrollOnOutput                bool                         `hcl:"scroll_on_output"`
+	ScrollbarVisible              bool                         `hcl:"scrollbar_visible"`
+	ScrollWheelMoveMultiplier     int                          `hcl:"scroll_wheel_move_multiplier"`
+	SendEncoding                  string                       `hcl:"send_encoding"`
+	ShiftInsertPaste              bool                         `hcl:"shift_insert_paste"`
+	UserCss                       string                       `hcl:"user_css"`
+}