# parser_data.py # # The code in this file is part of Pyxplot # # # Copyright (C) 2006-2012 Dominic Ford # 2008-2012 Ross Church # # $Id: parser_data.py 1261 2012-07-11 21:38:05Z dcf21 $ # # Pyxplot is free software; you can redistribute it and/or modify it under the # terms of the GNU General Public License as published by the Free Software # Foundation; either version 2 of the License, or (at your option) any later # version. # # You should have received a copy of the GNU General Public License along with # Pyxplot; if not, write to the Free Software Foundation, Inc., 51 Franklin # Street, Fifth Floor, Boston, MA 02110-1301, USA # ---------------------------------------------------------------------------- # Generate table of positions of variables by name globalVarNames = [] globalVarTable = {} def processVarTable(vt, directive, setOption): global globalVarNames,globalVarTable if '%' in directive: return key = "%s_%s"%(directive,setOption) globalVarTable[key] = vt for name,pos in vt.items(): if name not in globalVarNames: globalVarNames.append(name) def printVarTable(): global globalVarNames,globalVarTable,f_h,f_c globalVarNames = sorted(globalVarNames) for i in range(len(globalVarNames)): f_h.write("#define PARSE_INDEX_%s %d\n"%(sanitize(globalVarNames[i]),i)) keys = sorted(globalVarTable.keys()) for k in keys: d = globalVarTable[k] f_h.write("extern const int PARSE_TABLE_%s[];\n"%k) f_c.write("const int PARSE_TABLE_%s[] = {"%k) for i in range(len(globalVarNames)): item = globalVarNames[i] if (i!=0) : f_c.write(",") if item in d: f_c.write("%d"%d[item]) else : f_c.write("-1"); f_c.write("};\n") # Generate specification of commands that Pyxplot recognises def sanitize(instr): outstr = "" for i in range(len(instr)): if (instr[i].isalnum() or instr[i]=='_'): outstr+=instr[i] return outstr f_in = open("buildScripts/parser_data.dat","r") # Output C files containing command definitions f_h = open("src/parser/cmdList.h","w") f_c = open("src/parser/cmdList.c","w") includeKeys = {} f_h.write("""// This file autogenerated by parser_data.py #ifndef _CMDLIST_H #define _CMDLIST_H 1 extern const char ppl_cmdList[]; """) f_c.write("""// This file autogenerated by parser_data.py const char ppl_cmdList[] = "\\ """) # Loop through command definitions linecount = 0 for line in f_in: linecount+=1 line = line.strip(); if len(line)<1: continue if line.startswith("#"): continue outline = "" directive = "undefined" setoption = "" stack = [] stack_varnames = [] listsizes = [] varnames = {"directive":0 , "editno":1, "set_option":2, "X":3} vartable = varnames.copy() varcount = len(varnames) words = line.split() for word in words: if word in ["=","(","~",")","{","}","<","|",">","["]: # Grammar characters are passed straight through outline += "%s "%word if word=="[": # Lists are placed on the stack, and the number of variables in each list counted stack.append(varcount) stack_varnames.append(varnames) varcount=1 # Start counting from variable 1 inside a list, as first value is pointer to next list item varnames={} continue parts = word[1:].split(":") parts[0] = word[0]+parts[0] # If first character is a colon, it should match a literal :, not act as a separator subparts = parts[0].split("@") # Match string has form plot@1, meaning 'p' is short for 'plot' if len(parts)<2: parts.append("X") # If output variable name is not specified, stick it in 'X'. if len(subparts)>1: if subparts[1]=="n": subparts[1]=-1 # An auto-complete length of 'n' is stored as -1 parts.append("%s"%subparts[1]) parts[0] = subparts[0] else: parts.append("%s"%len(parts[0])) # If no auto-complete length is specified, whole string must be matched if len(parts)==3: parts.insert(2,"") # At this point, parts is [ match string , output variable , string to store (blank if equals match string) , auto-complete len ] assert len(parts)==4, "Syntax error in word '%s'."%word varname = parts[1] if word.startswith("]:"): parts = [ "]" , word[2:] , "" , "1" ] listsizes.append(varcount) varcount=stack.pop() for key,item in varnames.items(): stack_varnames[-1]["%s_%s"%(key,varname)] = item varnames=stack_varnames.pop() if varname=='directive': # Directive names are stored for use in #defines to convert variable names into output slot numbers if parts[2]=="": directive = parts[0] else : directive = parts[2] if varname=='set_option': # Set options are also used in #defines if parts[2]=="": setoption = parts[0]+"_" else : setoption = parts[2]+"_" if (setoption[0]=="%"): setoption="" if varname not in varnames: varnames[varname] = varcount vartable[varname] = varcount if (parts[0]=="%p"): varcount += 2 # Position vectors require 2 or 3 slots elif (parts[0]=="%P"): varcount += 3 else : varcount += 1 # Varcount keeps track of the slot number to place the next variable in elif (parts[0] in ["%p","%P"]): print("Danger in command %s: sharing position variable name with other variables of different lengths"%directive) outnum = varnames[varname] parts.append("%s"%outnum) # parts[4] = slot number if word.startswith("]:"): initial = "" parts.append("%s"%listsizes[-1]) # parts[5] = list length for ] (number of slots needed for this list's variables) else: initial = "@" parts.append("0") # ... or zero otherwise outline += initial + "@".join(parts) + " " f_c.write("%d "%(varcount)) # First word on each statement definition line is the number of variables in the root slotspace f_c.write("%s\\n\\\n"%outline) processVarTable(vartable,directive,setoption) for i,j in varnames.items(): if '%' not in directive: key = "PARSE_%s_%s%s"%(directive,setoption,sanitize(i)) if (key in includeKeys) and (includeKeys[key]!=j): print("Repetition of key %s"%key) includeKeys[key] = j f_h.write("#define %s %d\n"%(key,j)) # Write #defines to convert variable names into slot numbers # Finish up f_c.write("""";\n"""); printVarTable() f_h.write("""\n\n#endif"""); f_h.close() f_c.close()