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author | 2011-07-06 20:47:53 +0200 | |
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committer | 2011-07-06 20:47:53 +0200 | |
commit | 2ab1d2008cb15ffb0fd55cc7060fe035dc258cd7 (patch) | |
tree | eb90d57ccd8dee08c2e85a4f86e2315b45dc7731 | |
parent | Added comments to most functions (diff) | |
download | ebuildgen-2ab1d2008cb15ffb0fd55cc7060fe035dc258cd7.tar.gz ebuildgen-2ab1d2008cb15ffb0fd55cc7060fe035dc258cd7.tar.bz2 ebuildgen-2ab1d2008cb15ffb0fd55cc7060fe035dc258cd7.zip |
More work on the autoconf parser
-rw-r--r-- | filetypes/autoconf.py | 165 |
1 files changed, 148 insertions, 17 deletions
diff --git a/filetypes/autoconf.py b/filetypes/autoconf.py index 1012487..52a29d8 100644 --- a/filetypes/autoconf.py +++ b/filetypes/autoconf.py @@ -16,6 +16,7 @@ def scanacfile(acfile): "TEXT", "IF", "IFCOM", + "ELIF", "ELSE", "THEN", "IFEND", @@ -32,7 +33,7 @@ def scanacfile(acfile): ("if", "inclusive"), ) - def t_ANY_contline(t): + def t_contline(t): r"\\\n" t.lexer.lineno += 1 pass @@ -78,14 +79,27 @@ def scanacfile(acfile): def t_funcopt_opt(t): r"[^\\\[\]]+" + def t_funcopt_contline(t): + r"\\\n" + def t_func_FUNCOPT(t): r"[^\\\(\)\[\],]+" t.lexer.lineno += t.value.count('\n') return t def t_func_comma(t): - r"[ \t]*,[ \t]*" - pass + r"[ \t]*,(,|[ \t])*" + numcommas = t.value.count(',') + if numcommas > 1: + numcommas -= 1 #,,, -> ,[],[], + t.type = "FUNCOPT" + t.value = [] + while numcommas: + numcommas -= 1 + t.value += ["[]"] + return t + else: + pass def t_func_FUNCEND(t): r"\)" @@ -103,7 +117,8 @@ def scanacfile(acfile): return t def t_VAR(t): - r"[a-zA-Z_][a-zA-Z0-9_]*=([^\\\n]|\\\n)*\n" + r"[a-zA-Z_][a-zA-Z0-9_]*=([^;\\\n]|\\\n)*\n" + t.lexer.lineno += t.value.count('\n') return t def t_IF(t): @@ -111,13 +126,18 @@ def scanacfile(acfile): t.lexer.push_state("if") return t + def t_ELIF(t): + r"elif" + t.lexer.push_state("if") + return t + def t_if_THEN(t): r"then" t.lexer.pop_state() return t def t_if_IFCOM(t): - r"[^ \t\n\(\)]+" + r"[^ \t\n]+" return t def t_ELSE(t): @@ -139,7 +159,7 @@ def scanacfile(acfile): return t def t_case_CASEOPT(t): - r"[^ \n\t\(\)]+\)" + r"[^\n\t\(\)]+\)" return t def t_case_COPTEND(t): @@ -153,39 +173,150 @@ def scanacfile(acfile): return t def t_TEXT(t): #most likely commands like "AM_INIT_AUTOMAKE" etc. - r"[^ \t\n\(\)]+" + r"[^ ;\t\n\(\)]+" return t def t_ANY_error(t): - print("Illegal character '%s'" % t.value[0]) + print("Illegal character '%s'" % t.value[0],t.lexer.lineno) t.lexer.skip(1) lexer = lex.lex() - lexer.input(acfile) - for tok in lexer: - print(tok) + #lexer.input(acfile) + #for tok in lexer: + # print(tok) #YACC stuff begins here def p_complst(p): """ - complst : complst var + complst : complst TEXT + | complst ECHO | complst func - | var + | complst VAR + | complst ifcomp + | complst case + | TEXT + | ECHO | func + | VAR + | ifcomp + | case """ + if len(p) == 3: + p[0] = p[1] + [p[2]] + else: + p[0] = [p[1]] - def p_textlst(p): + def p_case(p): """ - textlst : textlst TEXT - | TEXT + case : CASE caseopt CASEEND + """ + p[0] = [p[1]] + [p[2]] + + def p_caseopt(p): + """ + caseopt : caseopt CASEOPT complst COPTEND + | CASEOPT complst COPTEND + """ + if len(p) == 5: + p[0] = p[1] + [p[2], p[3]] + else: + p[0] = [p[1], p[2]] + + def p_caseopt2(p): + """ + caseopt : caseopt CASEOPT complst + | caseopt CASEOPT COPTEND + | CASEOPT complst + | CASEOPT COPTEND + """ + if len(p) == 4: + if isinstance(p[3],list): + p[0] = p[1] + [p[2], p[3]] + else: + p[0] = p[1] + [p[2], []] + else: + if isinstance(p[2],list): + p[0] = [p[1], p[2]] + else: + p[0] = [p[1], []] + + def p_ifcomp(p): #perhaps needs elif also + """ + ifcomp : if IFEND + """ + p[0] = p[1] + + def p_if(p): + """ + if : if ELSE complst + | IF ifcom THEN complst + | if ELIF ifcom THEN complst + """ + if len(p) == 5: + p[0] = [[p[1]] + [p[2]], p[4]] + + elif len(p) == 6: + p[0] = p[1] + [[p[2]] + [p[3]], p[5]] + + else: + p[0] = p[1] + [[p[2]], p[3]] + + + def p_ifcom(p): + """ + ifcom : ifcom IFCOM + | IFCOM + """ + if len(p) == 3: + p[0] = p[1] + [p[2]] + else: + p[0] = [p[1]] + + def p_func(p): + """ + func : FUNC funcopt FUNCEND + """ + p[0] = [p[1],p[2]] + + def p_funcopt3(p): + """ + funcopt : funcopt func + """ + p[0] = p[1] + [p[2]] + + def p_funcopt2(p): + """ + funcopt : func funcopt + """ + p[0] = [p[1]] + p[2] + + def p_funcopt(p): + """ + funcopt : funcopt FUNCOPT + | FUNCOPT """ if len(p) == 3: - p[0] = p[1] += [p[1]] + if isinstance(p[2], list): + p[0] = p[1] + p[2] + else: + p[0] = p[1] + [p[2]] + elif isinstance(p[1], list): + p[0] = p[1] else: p[0] = [p[1]] + def p_error(p): + print("syntax error at '%s'" % p.type,p.value) + pass + + yacc.yacc() + + items = yacc.parse(acfile) + for item in items: + print(item) + file="configure.in" with open(file, encoding="utf-8", errors="replace") as inputfile: |