diff options
Diffstat (limited to 'server/src/parser/ast.lua')
| -rw-r--r-- | server/src/parser/ast.lua | 181 |
1 files changed, 179 insertions, 2 deletions
diff --git a/server/src/parser/ast.lua b/server/src/parser/ast.lua index cc4409f8..458e50c0 100644 --- a/server/src/parser/ast.lua +++ b/server/src/parser/ast.lua @@ -18,6 +18,31 @@ local function pushError(err) Errs[#Errs+1] = err end +local RESERVED = { + ['and'] = true, + ['break'] = true, + ['do'] = true, + ['else'] = true, + ['elseif'] = true, + ['end'] = true, + ['false'] = true, + ['for'] = true, + ['function'] = true, + ['goto'] = true, + ['if'] = true, + ['in'] = true, + ['local'] = true, + ['nil'] = true, + ['not'] = true, + ['or'] = true, + ['repeat'] = true, + ['return'] = true, + ['then'] = true, + ['true'] = true, + ['until'] = true, + ['while'] = true, +} + local defs = { Nil = function (pos) return { @@ -119,6 +144,13 @@ local defs = { } end, Name = function (start, str, finish) + if RESERVED[str] then + pushError { + type = 'KEYWORD', + start = start, + finish = finish - 1, + } + end return { type = 'name', start = start, @@ -142,6 +174,9 @@ local defs = { return first end end, + Prefix = function (start, exp, finish) + return exp + end, Index = function (start, exp, finish) return { type = 'index', @@ -230,7 +265,19 @@ local defs = { finish = start, } end, - Function = function (start, name, arg, ...) + Function = function (start, arg, ...) + local obj = { + type = 'function', + start = start, + arg = arg, + ... + } + local max = #obj + obj.finish = obj[max] - 1 + obj[max] = nil + return obj + end, + NamedFunction = function (start, name, arg, ...) local obj = { type = 'function', start = start, @@ -330,6 +377,72 @@ local defs = { return first end end, + ArgList = function (...) + if ... == '' then + return nil + end + local args = table.pack(...) + local list = {} + local max = args.n + args.n = nil + local wantName = true + for i = 1, max do + local obj = args[i] + if type(obj) == 'number' then + if wantName then + pushError { + type = 'MISS_NAME', + start = obj, + finish = obj, + } + end + wantName = true + else + if not wantName then + pushError { + type = 'MISS_SYMBOL', + start = obj.start-1, + finish = obj.start-1, + info = { + symbol = ',', + } + } + end + wantName = false + list[#list+1] = obj + if obj.type == '...' then + if i < max then + local a = args[i+1] + local b = args[max] + pushError { + type = 'ARGS_AFTER_DOTS', + start = type(a) == 'number' and a or a.start, + finish = type(b) == 'number' and b or b.finish, + } + end + break + end + end + end + if wantName then + local last = args[max] + pushError { + type = 'MISS_NAME', + start = last+1, + finish = last+1, + } + end + if #list == 0 then + return nil + elseif #list == 1 then + return list[1] + else + list.type = 'list' + list.start = list[1].start + list.finish = list[#list].finish + return list + end + end, CallArgList = function (start, ...) local args = {...} local max = #args @@ -386,6 +499,9 @@ local defs = { Nothing = function () return nil end, + None = function() + return + end, Skip = function () return false end, @@ -588,6 +704,13 @@ local defs = { [1] = '' } end, + MissExp = function (pos) + pushError { + type = 'MISS_EXP', + start = pos, + finish = pos, + } + end, MissExponent = function (start, finish) pushError { type = 'MISS_EXPONENT', @@ -654,7 +777,17 @@ local defs = { } return pos + 1 end, - MissPR = function (pos) + MissPL = function (pos) + pushError { + type = 'MISS_SYMBOL', + start = pos, + finish = pos, + info = { + symbol = '(', + } + } + end, + DirtyPR = function (pos) pushError { type = 'MISS_SYMBOL', start = pos, @@ -665,6 +798,16 @@ local defs = { } return pos + 1 end, + MissPR = function (pos) + pushError { + type = 'MISS_SYMBOL', + start = pos, + finish = pos, + info = { + symbol = ')', + } + } + end, ErrEsc = function (pos) pushError { type = 'ERR_ESC', @@ -699,6 +842,40 @@ local defs = { } } end, + MissField = function (pos) + pushError { + type = 'MISS_FIELD', + start = pos, + finish = pos, + } + end, + MissMethod = function (pos) + pushError { + type = 'MISS_METHOD', + start = pos, + finish = pos, + } + end, + MissLabel = function (pos) + pushError { + type = 'MISS_SYMBOL', + start = pos, + finish = pos, + info = { + symbol = '::', + } + } + end, + MissEnd = function (pos) + pushError { + type = 'MISS_SYMBOL', + start = pos, + finish = pos, + info = { + symbol = 'end', + } + } + end, } return function (self, lua, mode) |