[examples] rearrange examples to give big examples their own folder; add hand written files for type info example

bin/build_examples.sh

@@ -9,12 +9,17 @@ cd ..
 echo "~~~ Build All Exampes ~~~"
 bin/bld_core.sh show_ctx
 
-metasrc="examples/metaprograms"
+examps="examples"
 
-bin/bld_core.sh unit type_metadata $metasrc/type_metadata.c
-bin/bld_core.sh unit parse_check   $metasrc/parse_check.c
-bin/bld_core.sh unit user_errors   $metasrc/user_errors.c
-bin/bld_core.sh unit datadesk_like $metasrc/datadesk_like_template.c
+bin/bld_core.sh unit type_metadata $examps/type_metadata/type_metadata.c
+bin/bld_core.sh unit hello_world   $examps/intro/hello_world.c
+bin/bld_core.sh unit parse_check   $examps/intro/parse_check.c
+bin/bld_core.sh unit datadesk_like $examps/intro/datadesk_like_template.c
+bin/bld_core.sh unit user_errors   $examps/user_errors/user_errors.c
+
+if [ -d $examps/type_metadata/generated/type_info_meta.h ]; then
+bin/bld_core.sh unit type_info     $examps/type_metadata/type_info_final_program.c
+fi
 
 echo
 

examples/intro/hello_world.c

@@ -19,7 +19,7 @@ main(int argc, char **argv){
     // parse a string
     MD_String8 name = MD_S8Lit("<name>");
     MD_String8 hello_world = MD_S8Lit("hello world");
-    MD_ParseResult parse = MD_ParseWholeString(arena, hello_world_name, hello_world);
+    MD_ParseResult parse = MD_ParseWholeString(arena, name, hello_world);
     
     // print the results
     MD_PrintDebugDumpFromNode(stdout, parse.node, MD_GenerateFlags_All);

examples/type_metadata/.gitignore

@@ -0,0 +1 @@
+generated/*

examples/type_metadata/type_info.h

@@ -0,0 +1,58 @@
+/*
+** Example: type-metadata
+**
+** This is a hand written header to be included into the final program to
+** define types that will be used to layout the metadata tables created by the
+** generator.
+**
+** This file *does not* get included into the generator itself.
+**
+*/
+
+#ifndef TYPE_INFO_H
+#define TYPE_INFO_H
+
+typedef enum TypeKind
+{
+    TypeKind_Null,
+    TypeKind_Basic,
+    TypeKind_Struct,
+    TypeKind_Enum,
+} TypeKind;
+
+typedef struct TypeInfo TypeInfo;
+struct TypeInfo
+{
+    TypeKind kind;
+    char *name;
+    int name_length;
+    union
+    {
+        // basic
+        int size;
+        
+        // struct: array of TypeInfoMember
+        // enum: array of TypeInfoEnumerant
+        int child_count;
+        void *children;
+    };
+};
+
+typedef struct TypeInfoMember TypeInfoMember;
+struct TypeInfoMember
+{
+    char *name;
+    int name_length;
+    int array_count;
+    TypeInfo *type;
+};
+
+typedef struct TypeInfoEnumerant TypeInfoEnumerant;
+struct TypeInfoEnumerant
+{
+    char *name;
+    int name_length;
+    int value;
+};
+
+#endif //TYPE_INFO_H

examples/type_metadata/type_info_final_program.c

@@ -0,0 +1,20 @@
+/*
+** Example: type-metadata
+**
+** This file shows including the generated type information into a final
+** program and using that type info to unpack a buffer of data.
+**
+*/
+
+#include "generated/type_info_meta.h"
+#include "generated/type_info_meta.c"
+
+#include <stdio.h>
+
+int
+main(int argc, char **argv)
+{
+    
+    
+    return(0);
+}

examples/type_metadata/type_metadata.c

@@ -161,7 +161,6 @@ main(int argc, char **argv)
         printf("%.*s: map\n", MD_S8VArg(node->string));
     }
     
-    // TODO metadata hand-written portion
     // TODO check types & build member lists
     // TODO check maps & build case lists
     // TODO generate type definitions

examples/type_metadata/types.mdesk

@@ -45,6 +45,7 @@ type_info_from_shape:
   Polygon -> RoundedPolygon,
 }
 
+
 @map(Shape -> U32; default: 0; auto: 64)
 max_slot_from_shape:
 {