Check-in [e9115a162e]
Overview
Comment:Added a "proc" sub-command to generate C stubs to call Tcl code
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: e9115a162e86d27f4c65422f17a8846f63a913a8
User & Date: rkeene on 2014-07-16 03:37:56
Other Links: manifest | tags
Context
2014-07-16
04:05
Updated to support a Tcl_Interp* argument in any position for "proc" check-in: af858c331d user: rkeene tags: trunk
03:37
Added a "proc" sub-command to generate C stubs to call Tcl code check-in: e9115a162e user: rkeene tags: trunk
2014-06-24
21:32
Fixed patch based on testing from Andreas check-in: 6e18ecd7b2 user: rkeene tags: trunk
Changes

Modified tcc4tcl.tcl from [d7bddf2d39] to [54f1e6802f].

123
124
125
126
127
128
129























































































































































































130
131
132
133
134
135
136
		set state(tk) 1
	}

	proc _delete {handle} {
		rename $handle ""
		unset $handle
	}
























































































































































































	proc _go {handle {outputOnly 0}} {
		variable dir

		upvar #0 $handle state

		set code $state(code)







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
		set state(tk) 1
	}

	proc _delete {handle} {
		rename $handle ""
		unset $handle
	}

	proc _proc {handle cname adefs rtype body args} {
		# Convert body into a C-style string
		binary scan $body H* cbody
		set cbody [regsub -all {..} $cbody {\\x&}]

		# Parse optional arguments
		foreach {argname argval} $args {
			switch -- $argname {
				"-error" {
					set returnErrorValue $argval
				}
			}
		}

		# Argument definitions (in C style) initialization
		set adefs_c [list]

		# Names of all arguments initialization
		set args [list]

		# If we aren't creating a new interp, it must be the first argument
		# If the definition of this proc already includes the interp
		# argument, use it -- otherwise add one
		if {[lindex $adefs 0] != "Tcl_Interp*"} {
			set newInterp 1
		} else {
			set newInterp 0
			set interp_name [lindex $adefs 1]
		}

		# Create the C-style argument definition
		foreach {type var} $adefs {
			lappend adefs_c [list $type $var]
			set types($var) $type
			lappend args $var
		}

		set adefs_c [join $adefs_c {, }]

		# Determine how to return in failure
		if {$rtype != "void"} {
			if {[info exists returnErrorValue]} {
				set return_failure "return(${returnErrorValue})"
			} else {
				switch -- $rtype {
					int - long - Tcl_WideInt {
						set return_failure "return(-1)"
					}
					ok {
						set return_failure "return(TCL_ERROR)"
					}
					double - float {
						set return_failure "return(NaN)"
					}
					default {
						set return_failure "return(NULL)"
					}
				}
			}
		} else {
			set return_failure "return"
		}

		# Define the C function
		_ccode $handle "$rtype $cname\($adefs_c) \{"

		## Define the Tcl return value checking variable
		_ccode $handle "    int tclrv;"

		## If the interpreters return value is relevant, create a variable to store it
		if {$rtype != "ok" && $rtype != "void"} {
			_ccode $handle "    Tcl_Obj *rv_interp;"
		}

		## If we are returning a value, declare a variable for that
		if {$rtype != "void"} {
			_ccode $handle "    $rtype rv;"
		}

		## If we need to create a new interpreter, do so
		if {$newInterp} {
			set interp_name "ip"
			_ccode $handle "    Tcl_Interp *${interp_name};"

			set args_nointerp $args
		} else {
			set args_nointerp [lrange $args 1 end]
		}

		# Declare Tcl_Obj variables
		_ccode $handle "    Tcl_Obj *_[join $args_nointerp {, *_}];"

		_ccode $handle ""

		if {$newInterp} {
			_ccode $handle "    ${interp_name}  = Tcl_CreateInterp();"
			_ccode $handle "    if (!${interp_name}) $return_failure;"
			_ccode $handle ""
		}

		# Process all arguments
		foreach arg $args_nointerp {
			set type $types($arg)
			switch -- $type {
				int - long - Tcl_WideInt - float - double {
					switch -- $type {
						float {
							set convCmd Double
						}
						Tcl_WideInt {
							set convCmd WideInt
						}
						default {
							set convCmd [string totitle $type]
						}
					}

					_ccode $handle "    _$arg = Tcl_New${convCmd}Obj($arg);"
					_ccode $handle "    if (!_$arg) $return_failure;"
				}
				char* {
					_ccode $handle "    _$arg = Tcl_NewStringObj($arg, -1);"
				}
				Tcl_Obj* {
					_ccode $handle "    _$arg = $arg;"
				}
				default {
					return -code error "Unknown type: $type"
				}
			}
			_ccode $handle "    if (!Tcl_ObjSetVar2(${interp_name}, Tcl_NewStringObj(\"${arg}\", -1), NULL, _$arg, 0)) $return_failure;"
		}

		_ccode $handle ""
		_ccode $handle "    tclrv = Tcl_Eval($interp_name, \"$cbody\");"
		_ccode $handle "    if (tclrv != TCL_OK) $return_failure;"
		_ccode $handle ""

		if {$rtype != "ok" && $rtype != "void"} {
			_ccode $handle "    rv_interp = Tcl_GetObjResult(${interp_name});"
		}

		switch -- $rtype {
			void { }
			ok {
				_ccode $handle "    rv = 0;"
			}
			int {
				_ccode $handle "    if (Tcl_GetIntFromObj(ip, rv_interp, &rv) != TCL_OK) $return_failure;"
			}
			long {
				_ccode $handle "    if (Tcl_GetLongFromObj(ip, rv_interp, &rv) != TCL_OK) $return_failure;"
			}
			Tcl_WideInt {
				_ccode $handle "    if (Tcl_GetWideIntFromObj(ip, rv_interp, &rv) != TCL_OK) $return_failure;"
			}
			float {
				_ccode $handle "    {"
				_ccode $handle "        double t;"
				_ccode $handle "        if (Tcl_GetDoubleFromObj(ip, rv_interp, &t) != TCL_OK) $return_failure;"
				_ccode $handle "        rv = (float) t;"
				_ccode $handle "    }"
			}
			double {
				_ccode $handle "    if (Tcl_GetDoubleFromObj(ip, rv_interp, &rv) != TCL_OK) $return_failure;"
			}
			char* {
				_ccode $handle "    rv = Tcl_GetString(rv_interp);"
			}
			char* {
				_ccode $handle "    rv = Tcl_GetString(rv_interp);"
			}
		}

		_ccode $handle ""
		if {$rtype != "void"} {
			_ccode $handle "    return(rv);"
		} else {
			_ccode $handle "    return;"
		}
		_ccode $handle "\}"
	}

	proc _go {handle {outputOnly 0}} {
		variable dir

		upvar #0 $handle state

		set code $state(code)

Modified test.tcl from [c0aa27fcc2] to [6f71a6b9f8].

141
142
143
144
145
146
147












	$handle add_library_path /usr/lib
	$handle add_library_path /usr/lib32
	$handle add_library curl
	$handle go
    
	curl_fetch http://rkeene.org/
}



















>
>
>
>
>
>
>
>
>
>
>
>
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
	$handle add_library_path /usr/lib
	$handle add_library_path /usr/lib32
	$handle add_library curl
	$handle go
    
	curl_fetch http://rkeene.org/
}

set handle [tcc4tcl::new]
$handle proc callToTcl {int a int b} int {
	set retval [expr {$a + $b}]

	return $retval
}
$handle cwrap callToTcl {int a int b} int
$handle go
if {[callToTcl 3 5] != 8} {
	error "3 + 5 is 8"
}