author | wenzelm |
Tue, 19 Aug 2014 23:17:51 +0200 | |
changeset 58011 | bc6bced136e5 |
parent 57834 | 0d295e339f52 |
child 58903 | 38c72f5f6c2e |
permissions | -rw-r--r-- |
24581 | 1 |
(* Title: Pure/ML/ml_context.ML |
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Author: Makarius |
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ML context and antiquotations. |
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*) |
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signature ML_CONTEXT = |
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sig |
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val the_generic_context: unit -> Context.generic |
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val the_global_context: unit -> theory |
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val the_local_context: unit -> Proof.context |
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val thm: xstring -> thm |
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val thms: xstring -> thm list |
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val exec: (unit -> unit) -> Context.generic -> Context.generic |
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val check_antiquotation: Proof.context -> xstring * Position.T -> string |
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type decl = Proof.context -> string * string |
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val add_antiquotation: binding -> (Token.src -> Proof.context -> decl * Proof.context) -> |
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theory -> theory |
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val print_antiquotations: Proof.context -> unit |
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val eval_antiquotes: ML_Lex.token Antiquote.antiquote list * Position.T -> |
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Context.generic option -> (ML_Lex.token list * ML_Lex.token list) * Context.generic option |
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val eval: ML_Compiler.flags -> Position.T -> ML_Lex.token Antiquote.antiquote list -> unit |
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val eval_file: ML_Compiler.flags -> Path.T -> unit |
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val eval_source: ML_Compiler.flags -> Symbol_Pos.source -> unit |
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val eval_in: Proof.context option -> ML_Compiler.flags -> Position.T -> |
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ML_Lex.token Antiquote.antiquote list -> unit |
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val eval_source_in: Proof.context option -> ML_Compiler.flags -> Symbol_Pos.source -> unit |
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val expression: Position.T -> string -> string -> ML_Lex.token Antiquote.antiquote list -> |
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Context.generic -> Context.generic |
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end |
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structure ML_Context: ML_CONTEXT = |
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struct |
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(** implicit ML context **) |
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val the_generic_context = Context.the_thread_data; |
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val the_global_context = Context.theory_of o the_generic_context; |
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val the_local_context = Context.proof_of o the_generic_context; |
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fun thm name = Proof_Context.get_thm (the_local_context ()) name; |
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fun thms name = Proof_Context.get_thms (the_local_context ()) name; |
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fun exec (e: unit -> unit) context = |
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(case Context.setmp_thread_data (SOME context) (fn () => (e (); Context.thread_data ())) () of |
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SOME context' => context' |
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| NONE => error "Missing context after execution"); |
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(** ML antiquotations **) |
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(* theory data *) |
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type decl = Proof.context -> string * string; (*final context -> ML env, ML body*) |
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structure Antiquotations = Theory_Data |
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( |
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type T = (Token.src -> Proof.context -> decl * Proof.context) Name_Space.table; |
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val empty : T = Name_Space.empty_table Markup.ML_antiquotationN; |
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val extend = I; |
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fun merge data : T = Name_Space.merge_tables data; |
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); |
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parents:
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val get_antiquotations = Antiquotations.get o Proof_Context.theory_of; |
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fun check_antiquotation ctxt = |
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#1 o Name_Space.check (Context.Proof ctxt) (get_antiquotations ctxt); |
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fun add_antiquotation name f thy = thy |
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|> Antiquotations.map (Name_Space.define (Context.Theory thy) true (name, f) #> snd); |
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fun print_antiquotations ctxt = |
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Pretty.big_list "ML antiquotations:" |
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(map (Pretty.mark_str o #1) (Name_Space.markup_table ctxt (get_antiquotations ctxt))) |
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|> Pretty.writeln; |
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fun apply_antiquotation src ctxt = |
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let val (src', f) = Token.check_src ctxt (get_antiquotations ctxt) src |
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in f src' ctxt end; |
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(* parsing and evaluation *) |
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local |
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val antiq = |
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Parse.!!! (Parse.position Parse.xname -- Parse.args --| Scan.ahead Parse.eof) |
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>> uncurry Token.src; |
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val begin_env0 = ML_Lex.tokenize "structure Isabelle =\nstruct\n"; |
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fun begin_env visible = |
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ML_Lex.tokenize |
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("structure Isabelle =\nstruct\n\ |
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\val ML_context = Context_Position.set_visible " ^ Bool.toString visible ^ |
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" (ML_Context.the_local_context ());\n\ |
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\val ML_print_depth =\n\ |
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\ let val default = ML_Options.get_print_depth ()\n\ |
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\ in fn () => ML_Options.get_print_depth_default default end;\n"); |
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val end_env = ML_Lex.tokenize "end;"; |
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val reset_env = ML_Lex.tokenize "structure Isabelle = struct end"; |
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|
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export eval_antiquotes: refined version that operates on ML tokens;
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in |
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fun eval_antiquotes (ants, pos) opt_context = |
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let |
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val visible = |
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(case opt_context of |
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SOME (Context.Proof ctxt) => Context_Position.is_visible ctxt |
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| _ => true); |
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val opt_ctxt = Option.map (Context.Proof o Context.proof_of) opt_context; |
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val ((ml_env, ml_body), opt_ctxt') = |
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if forall Antiquote.is_text ants |
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then ((begin_env0, map (fn Antiquote.Text tok => tok) ants), opt_ctxt) |
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else |
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let |
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val lex = #1 (Keyword.get_lexicons ()); |
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fun no_decl _ = ([], []); |
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fun expand (Antiquote.Text tok) ctxt = (K ([], [tok]), ctxt) |
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| expand (Antiquote.Antiq (ss, {range, ...})) ctxt = |
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let |
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val (decl, ctxt') = |
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apply_antiquotation (Token.read_antiq lex antiq (ss, #1 range)) ctxt; |
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val decl' = decl #> pairself (ML_Lex.tokenize #> map (ML_Lex.set_range range)); |
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in (decl', ctxt') end; |
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val ctxt = |
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(case opt_ctxt of |
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NONE => error ("No context -- cannot expand ML antiquotations" ^ Position.here pos) |
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| SOME ctxt => Context.proof_of ctxt); |
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val (decls, ctxt') = fold_map expand ants ctxt; |
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val (ml_env, ml_body) = |
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decls |> map (fn decl => decl ctxt') |> split_list |> pairself flat; |
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in ((begin_env visible @ ml_env, ml_body), SOME (Context.Proof ctxt')) end; |
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in ((ml_env @ end_env, ml_body), opt_ctxt') end; |
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fun eval flags pos ants = |
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let |
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val non_verbose = ML_Compiler.verbose false flags; |
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(*prepare source text*) |
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val ((env, body), env_ctxt) = eval_antiquotes (ants, pos) (Context.thread_data ()); |
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val _ = |
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(case Option.map Context.proof_of env_ctxt of |
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SOME ctxt => |
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if Config.get ctxt ML_Options.source_trace andalso Context_Position.is_visible ctxt |
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then tracing (cat_lines [ML_Lex.flatten env, ML_Lex.flatten body]) |
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else () |
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| NONE => ()); |
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(*prepare static ML environment*) |
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ML_trace: observe context visibility flag (import for Latex mode, for example);
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156 |
val _ = |
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157 |
Context.setmp_thread_data |
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158 |
(Option.map (Context.mapping I (Context_Position.set_visible false)) env_ctxt) |
56275
600f432ab556
added command 'SML_file' for Standard ML without Isabelle/ML add-ons;
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159 |
(fn () => (ML_Compiler.eval non_verbose Position.none env; Context.thread_data ())) () |
31325
700951b53d21
moved local ML environment to separate module ML_Env;
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160 |
|> (fn NONE => () | SOME context' => Context.>> (ML_Env.inherit context')); |
28270
7ada24ebea94
explicit handling of ML environment within generic context;
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161 |
|
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162 |
val _ = ML_Compiler.eval flags pos body; |
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163 |
val _ = ML_Compiler.eval non_verbose Position.none reset_env; |
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164 |
in () end; |
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|
166 |
end; |
|
167 |
||
168 |
||
30672
beaadd5af500
more systematic type use_context, with particular values ML_Parse.global_context and ML_Context.local_context;
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169 |
(* derived versions *) |
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|
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171 |
fun eval_file flags path = |
56203
76c72f4d0667
clarified bootstrap process: switch to ML with context and antiquotations earlier;
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172 |
let val pos = Path.position path |
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173 |
in eval flags pos (ML_Lex.read pos (File.read path)) end; |
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174 |
|
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175 |
fun eval_source flags source = |
56278
2576d3a40ed6
separate tokenization and language context for SML: no symbols, no antiquotes;
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176 |
eval flags (#pos source) (ML_Lex.read_source (#SML flags) source); |
37198
3af985b10550
replaced ML_Lex.read_antiq by more concise ML_Lex.read, which includes full read/report with explicit position information;
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177 |
|
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178 |
fun eval_in ctxt flags pos ants = |
56069
451d5b73f8cf
simplified programming interface to define ML antiquotations -- NB: the transformed context ignores updates of the context parser;
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179 |
Context.setmp_thread_data (Option.map Context.Proof ctxt) |
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180 |
(fn () => eval flags pos ants) (); |
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|
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182 |
fun eval_source_in ctxt flags source = |
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simplified programming interface to define ML antiquotations -- NB: the transformed context ignores updates of the context parser;
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183 |
Context.setmp_thread_data (Option.map Context.Proof ctxt) |
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184 |
(fn () => eval_source flags source) (); |
37198
3af985b10550
replaced ML_Lex.read_antiq by more concise ML_Lex.read, which includes full read/report with explicit position information;
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185 |
|
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replaced ML_Lex.read_antiq by more concise ML_Lex.read, which includes full read/report with explicit position information;
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186 |
fun expression pos bind body ants = |
56304
40274e4f5ebf
redirect ML_Compiler reports more directly: only the (big) parse tree report is deferred via Execution.print (NB: this does not work for asynchronous "diag" commands);
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187 |
exec (fn () => |
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redirect ML_Compiler reports more directly: only the (big) parse tree report is deferred via Execution.print (NB: this does not work for asynchronous "diag" commands);
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188 |
eval ML_Compiler.flags pos |
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redirect ML_Compiler reports more directly: only the (big) parse tree report is deferred via Execution.print (NB: this does not work for asynchronous "diag" commands);
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189 |
(ML_Lex.read Position.none ("Context.set_thread_data (SOME (let " ^ bind ^ " = ") @ ants @ |
37198
3af985b10550
replaced ML_Lex.read_antiq by more concise ML_Lex.read, which includes full read/report with explicit position information;
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190 |
ML_Lex.read Position.none (" in " ^ body ^ " end (ML_Context.the_generic_context ())));"))); |
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replaced ML_Lex.read_antiq by more concise ML_Lex.read, which includes full read/report with explicit position information;
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191 |
|
24574 | 192 |
end; |
193 |