Alright, the grammer is almost there, just debugging, in what I call extreme-

debugging mode.  If you wanted something intelligable, don't use this one.

5 files changed, 90 insertions, 31 deletions

diff --git a/build.conf b/build.conf
index 8bbe679..2115fb0 100644
--- a/build.conf
+++ b/build.conf
@@ -4,7 +4,7 @@ default action: check "build", check "cleanup"
         rule "exe",
         target file,
         set "CXXFLAGS" = "-lBob",
-        input [files("src/{target}"), files("src/shared")]
+        input [files("src/{target}" ), files("src/shared")]
 
 [directoryName("src/tests")] filter /src\/tests/(.*)/tests\/{re:1}/:
         rule "exe",
diff --git a/src/build.l b/src/build.l
index 9a15719..8189f9d 100644
--- a/src/build.l
+++ b/src/build.l
@@ -18,7 +18,7 @@ std::string strbuf;
 %}
 %%
 
-[,:=[\]]                                                        return yytext[0];
+[,:=[\]()]                                                      return yytext[0];
 "+="                                                            return TOK_ADDSET;
 
 "default"                                                       return TOK_DEFAULT;
@@ -32,6 +32,7 @@ std::string strbuf;
 "check"                                                         return TOK_CHECK;
 "clean"                                                         return TOK_CLEAN;
 "target"                                                        return TOK_TARGET;
+"input"                                                         return TOK_INPUT;
 
 \n+                                                                     {
         yylloc->last_line += yyleng;
@@ -59,6 +60,27 @@ std::string strbuf;
 
 "#".*                                                           /* single line comment */
 
+[a-zA-Z][a-zA-Z0-9]*                                            {
+        {
+                yylval->tval = bld.getTargetType( yytext );
+                if( yylval->tval >= 0 )
+                {
+                        return TARGETTYPE;
+                }
+                else if( bld.isFunction( yytext ) )
+                {
+                        yylval->strval = stringdup( yytext );
+                        return FUNCTION;
+                }
+                bld.error( yylloc, "Invalid token" );
+        }
+}
+
+[^ \t\r\n\'\":=,/][^ \t\r\n\'\"=,]+[^ \t\r\n\'\":=,]                                            {
+        yylval->strval = stringdup( yytext );
+        return STRING;
+}
+
 \"                                                                      {
         BEGIN( strdq );
         strbuf = "";
@@ -94,6 +116,10 @@ std::string strbuf;
         return STRING;
 }
 
+.                                                                       {
+        bld.error( yylloc, "Invalid character found!" );
+}
+
 %%
 
 void Builder::scanBegin()
diff --git a/src/build.y b/src/build.y
index d852c4c..5580299 100644
--- a/src/build.y
+++ b/src/build.y
@@ -40,9 +40,9 @@ void yyerror( YYLTYPE *locp, Builder &bld, char const *msg );
 %token TOK_PERFORM                              "perform"
 %token TOK_PRODUCES                             "produces"
 
-%token ',' ':' '='
+%token ',' ':' '=' '(' ')'
 
-%destructor { delete[] $$; } STRING
+%destructor { delete[] $$; } STRING FUNCTION
 
 %%
 
@@ -54,57 +54,61 @@ input:
          ;
 
 // Rule interpretation
-rule: TOK_RULE STRING ':' rulecmds
+rule: TOK_RULE STRING {printf("Rule %s:\n", $2 ); } ':' rulecmds
         ;
 
 rulecmds: rulecmd
                 | rulecmds ',' rulecmd
                 ;
 
-rulecmd: TOK_MATCHES REGEXP
-           | TOK_PRODUCES STRING
-           | TOK_REQUIRES list
-           | TOK_INPUT TOK_FILTER REGEXP
-           | TOK_INPUT TOK_FILTER func
-           | TOK_PERFORM func
+rulecmd: TOK_MATCHES REGEXP { printf("    Matches: %s\n", $2 ); }
+           | TOK_PRODUCES STRING { printf("    Produces: %s\n", $2 ); }
+           | TOK_REQUIRES { printf("    Requires:\n"); } list {printf("\n");}
+           | TOK_INPUT TOK_FILTER REGEXP { printf("    Input Filter: %s\n", $3 ); }
+           | TOK_INPUT TOK_FILTER { printf("    Input Filter: "); } func {printf("\n");}
+           | TOK_PERFORM { printf("    Perform: "); } func {printf("\n");}
            ;
 
 // Action interpretation
-action: TOK_DEFAULT TOK_ACTION ':' actioncmds
-          | STRING TOK_ACTION ':' actioncmds
+action: TOK_DEFAULT TOK_ACTION ':' { printf("Default action:\n"); } actioncmds
+          | STRING TOK_ACTION ':' { printf("\"%s\" action:\n", $1 ); } actioncmds
           ;
 
 actioncmds: actioncmd
                   | actioncmds ',' actioncmd
                   ;
 
-actioncmd: actioncmdtype list
+actioncmd: { printf("\t"); } actioncmdtype list {printf("\n");}
                  ;
 
-actioncmdtype: TOK_CHECK
-                         | TOK_CLEAN
+actioncmdtype: TOK_CHECK { printf("check "); }
+                         | TOK_CLEAN { printf("clean "); }
                          ;
 
 // Target interpretation
-
-target: list ':' targetcmds
+target: list ':' { printf(" are targets:\n"); } targetcmds
           ;
 
 targetcmds: targetcmd
                   | targetcmds ',' targetcmd
                   ;
 
-targetcmd: TOK_RULE STRING
-                 | TOK_TARGET TOK_PREFIX STRING
-                 | TOK_TARGET TARGETTYPE
-                 | TOK_INPUT list
-                 | TOK_REQUIRES list
+targetcmd: TOK_RULE STRING { printf("    Rule %s\n", $2 ); }
+                 | TOK_TARGET TOK_PREFIX STRING { printf("    Target prefix: %s\n", $3 ); }
+                 | TOK_TARGET TARGETTYPE { printf("    Target Type: %d\n", $2 ); }
+                 | TOK_INPUT { printf("    Input: "); } list { printf("\n"); }
+                 | TOK_REQUIRES { printf("    Requires: "); } list { printf("\n"); }
+                 | TOK_SET { printf("    Set: "); } targetset
+                 ;
+
+targetset: STRING '=' STRING { printf("%s = %s\n", $1, $3 ); }
+                 | STRING TOK_ADDSET STRING { printf("%s += %s\n", $1, $3 ); }
                  ;
 
 // list goo
 
 list: listitem listfilter
-        | '[' listitems ']' listfilter
+        | '[' { printf("["); } listitems ']' { printf("]"); } listfilter
         ;
 
 listfilter:
@@ -113,21 +117,21 @@ listfilter:
                   ;
 
 listitems: listitem
-                 | listitems ',' listitem
+                 | listitems ',' {printf(", "); } listitem
                  ;
 
-listitem: STRING
+listitem: STRING {printf("%s", $1 ); }
                 | func
                 ;
 
 // Function
 
-func: FUNCTION '(' funcparams ')'
+func: FUNCTION { printf("%s(", $1 ); } '(' funcparams ')' { printf(")"); }
         ;
 
 funcparams:
-                  | STRING
-                  | funcparams ',' STRING
+                  | STRING { printf("%s", $1 ); }
+                  | funcparams ',' STRING { printf(", %s", $3 ); }
                   ;
 
 %%
@@ -136,3 +140,4 @@ void yyerror( YYLTYPE *locp, Builder &bld, char const *msg )
 {
         bld.error( locp, msg );
 }
+
diff --git a/src/builder.cpp b/src/builder.cpp
index 1ecbf05..b6ae887 100644
--- a/src/builder.cpp
+++ b/src/builder.cpp
@@ -1,5 +1,7 @@
 #include "builder.h"
 
+subExceptionDef( BuildException );
+
 Builder::Builder()
 {
 }
@@ -9,22 +11,42 @@ Builder::~Builder()
 }
 
 void yyparse( Builder &bld );
+extern int yydebug;
 
 void Builder::load( const std::string &sFile )
 {
         file = sFile;
         scanBegin();
+        yydebug = 1;
         yyparse( *this );
         scanEnd();
 }
 
 void Builder::error( YYLTYPE *locp, const char *msg )
 {
-        printf("%s\n", msg );
+        fflush( stdout );
+        throw BuildException("%s: %d.%d-%d.%d: %s",
+                        file.c_str(),
+                        locp->first_line, locp->first_column,
+                        locp->last_line, locp->last_column,
+                        msg );
 }
 
 void Builder::error( const std::string &msg )
 {
-        printf("%s\n", msg.c_str() );
+        fflush( stdout );
+        throw BuildException("%s", msg.c_str() );
+}
+
+int Builder::getTargetType( const char *sType )
+{
+        if( !strcmp( sType, "file" ) )
+                return 0;
+        return -1;
+}
+
+bool Builder::isFunction( const char *sFunc )
+{
+        return true;
 }
 
diff --git a/src/builder.h b/src/builder.h
index 9c146ea..3293108 100644
--- a/src/builder.h
+++ b/src/builder.h
@@ -4,12 +4,15 @@
 #include <stdint.h>
 #include <string>
 #include "build.tab.h"
+#include "exceptions.h"
 
 class Builder;
 
 #define YY_DECL int yylex( YYSTYPE *yylval_param, YYLTYPE *yylloc_param, Builder &bld )
 YY_DECL;
 
+subExceptionDecl( BuildException );
+
 class Builder
 {
 public:
@@ -21,6 +24,9 @@ public:
 
         void load( const std::string &sFile );
 
+        int getTargetType( const char *sType );
+        bool isFunction( const char *sFunc );
+
 private:
         std::string file;
         void scanBegin();