More docs. Made two builtins be stdlib functions.

README.md

@@ -87,19 +87,9 @@ Calls the given function with the given arguments. The result, if any, is ignore
 
 ### Builtins
 
-#### emit arg
-
-Writes the given string to standard output.
-
-? Does this need to be a builtin ?
-
-#### skipchar
-
-? Does this need to be a builtin ?
-
 #### trace
 
-? Does this need to be a builtin ?
+Writes the name and value of the variable passed to stderr if the TRACE environment variable is set.
 
 #### Standard library functions
 
@@ -109,13 +99,19 @@ Return true if the given strings are the same.
 
 #### lt a b
 
+`a` and `b` are expected to have length 1.
+
 Return true if a would sort before b.
 
 #### addstringchar a b
 
-b is expected to have length 1.
+`b` is expected to have length 1.
 
-Creates a new string with b appended to a.
+Creates a new string with `b` appended to `a`.
+
+#### emit arg
+
+Writes the given string to standard output.
 
 #### peek
 
@@ -125,6 +121,10 @@ Checks stdin for the next character and returns it.
 
 Advances stdin a single character.
 
+#### skipchar a
+
+Advances stdin a single character, if it matches the first character of `a`. Otherwise, exits the program.
+
 ### Typing
 
 Every variable is of type string. Every function gets a number of strings as output, and returns another string.

it0-out.py

@@ -159,19 +159,6 @@ def parsestatreturn(indent):
     emit(eol)
     skipchar(eol)
 
-def parsestatemit(indent):
-    skipchar(' ')
-    emit('    ' * indent)
-    emit('emit(')
-
-    if quote == peek():
-        parseconststring()
-    else:
-        parseexprvarref()
-    skipchar(eol)
-
-    emit(')\n')
-
 def parsestattrace(indent):
     skipchar(' ')
     emit('    ' * indent)
@@ -185,17 +172,6 @@ def parsestattrace(indent):
     emit(var_name)
     emit(')\n')
 
-def parsestatskipchar(indent):
-    skipchar(' ')
-    emit('    ' * indent)
-    emit('skipchar(')
-    if quote == peek():
-        parseconststring()
-    else:
-        parseexprvarref()
-    emit(')\n')
-    skipchar(eol)
-
 def parsestat(indent):
     call = lexident()
     trace('call', call)
@@ -228,18 +204,10 @@ def parsestat(indent):
         parsestatreturn(indent)
         return
 
-    if call == "emit":
-        parsestatemit(indent)
-        return
-
     if call == "trace":
         parsestattrace(indent)
         return
 
-    if call == "skipchar":
-        parsestatskipchar(indent)
-        return
-
     emit('    ' * indent)
     emit(call)
     emit('(')

it1-in.lang0

@@ -152,23 +152,6 @@ parsestatreturn indent:
 	skipchar eol
 /
 
-parsestatemit indent:
-	emit indent
-	emit "emit("
-	skipchar " "
-	calc char peek
-	calc isquote eq char quote
-	calc isnotquote not isquote
-	if isquote
-		parseconststring
-	/
-	if isnotquote
-		parseexprvarref
-	/
-	emit ")\n"
-	skipchar eol
-/
-
 parsestattrace indent:
 	emit indent
 	emit "trace("
@@ -183,23 +166,6 @@ parsestattrace indent:
 	skipchar eol
 /
 
-parsestatskipchar indent:
-	skipchar " "
-	emit indent
-	emit "skipchar("
-	calc char peek
-	calc isquote eq char quote
-	calc isnotquote not isquote
-	if isquote
-		parseconststring
-	/
-	if isnotquote
-		parseexprvarref
-	/
-	emit ")\n"
-	skipchar eol
-/
-
 parsestat indent:
 	calc call lexident
 	trace call
@@ -238,21 +204,11 @@ parsestat indent:
 		parsestatreturn indent
 		return
 	/
-	calc isemit eq call "emit"
-	if isemit
-		parsestatemit indent
-		return
-	/
 	calc istrace eq call "trace"
 	if istrace
 		parsestattrace indent
 		return
 	/
-	calc isskipchar eq call "skipchar"
-	if isskipchar
-		parsestatskipchar indent
-		return
-	/
 	emit indent
 	emit call
 	emit "("

it2-in.lang0

@@ -209,27 +209,6 @@ parsestatreturn indent:
 	return
 /
 
-parsestatemit indent:
-	declare char
-	declare isquote
-	declare isnotquote
-	emit indent
-	emit "emit("
-	skipchar " "
-	calc char peek
-	calc isquote eq char quote
-	calc isnotquote not isquote
-	if isquote
-		parseconststring
-	/
-	if isnotquote
-		parseexprvarref
-	/
-	emit ");\n"
-	skipchar eol
-	return
-/
-
 parsestattrace indent:
 	declare varname
 	emit indent
@@ -246,27 +225,6 @@ parsestattrace indent:
 	return
 /
 
-parsestatskipchar indent:
-	declare char
-	declare isquote
-	declare isnotquote
-	skipchar " "
-	emit indent
-	emit "skipchar("
-	calc char peek
-	calc isquote eq char quote
-	calc isnotquote not isquote
-	if isquote
-		parseconststring
-	/
-	if isnotquote
-		parseexprvarref
-	/
-	emit ");\n"
-	skipchar eol
-	return
-/
-
 parsestat indent:
 	declare call
 	declare char
@@ -315,21 +273,11 @@ parsestat indent:
 		parsestatreturn indent
 		return
 	/
-	calc iscall eq call "emit"
-	if iscall
-		parsestatemit indent
-		return
-	/
 	calc iscall eq call "trace"
 	if iscall
 		parsestattrace indent
 		return
 	/
-	calc iscall eq call "skipchar"
-	if iscall
-		parsestatskipchar indent
-		return
-	/
 	emit indent
 	emit call
 	emit "("