template-parser: added some ast debug

3 files changed, 76 insertions, 2 deletions

diff --git a/src/blogc.c b/src/blogc.c
index cdc6aeb..10f341f 100644
--- a/src/blogc.c
+++ b/src/blogc.c
@@ -41,7 +41,7 @@ blogc_print_help(void)
 {
     printf(
         "usage:\n"
-        "    blogc [-h] [-v] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
+        "    blogc [-h] [-v] [-d] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
         "          [-o OUTPUT] [SOURCE ...] - A blog compiler.\n"
         "\n"
         "positional arguments:\n"
@@ -50,6 +50,7 @@ blogc_print_help(void)
         "optional arguments:\n"
         "    -h            show this help message and exit\n"
         "    -v            show version and exit\n"
+        "    -d            enable debug\n"
         "    -l            build listing page, from multiple source files\n"
         "    -D KEY=VALUE  set global configuration parameter\n"
         "    -p KEY        show the value of a global configuration parameter\n"
@@ -63,7 +64,7 @@ static void
 blogc_print_usage(void)
 {
     printf(
-        "usage: blogc [-h] [-v] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
+        "usage: blogc [-h] [-v] [-d] [-l] [-D KEY=VALUE ...] [-p KEY] [-t TEMPLATE]\n"
         "             [-o OUTPUT] [SOURCE ...]\n");
 }
 
@@ -110,6 +111,7 @@ main(int argc, char **argv)
 
     int rv = 0;
 
+    bool debug = false;
     bool listing = false;
     char *template = NULL;
     char *output = NULL;
@@ -131,6 +133,9 @@ main(int argc, char **argv)
                 case 'v':
                     printf("%s\n", PACKAGE_STRING);
                     goto cleanup;
+                case 'd':
+                    debug = true;
+                    break;
                 case 'l':
                     listing = true;
                     break;
@@ -246,6 +251,9 @@ main(int argc, char **argv)
         goto cleanup3;
     }
 
+    if (debug)
+        blogc_template_debug(l);
+
     char *out = blogc_render(l, s, config, listing);
 
     bool write_to_stdout = (output == NULL || (0 == strcmp(output, "-")));
diff --git a/src/template-parser.c b/src/template-parser.c
index 525f5f5..1582c17 100644
--- a/src/template-parser.c
+++ b/src/template-parser.c
@@ -11,6 +11,7 @@
 #endif /* HAVE_CONFIG_H */
 
 #include <stdbool.h>
+#include <stdio.h>
 #include <string.h>
 
 #include "template-parser.h"
@@ -634,3 +635,67 @@ blogc_template_free_stmts(sb_slist_t *stmts)
     }
     sb_slist_free(stmts);
 }
+
+
+static const char*
+get_operator(blogc_template_stmt_operator_t op)
+{
+    if (op & BLOGC_TEMPLATE_OP_NEQ)
+        return "!=";
+    if (op & BLOGC_TEMPLATE_OP_EQ) {
+        if (op & BLOGC_TEMPLATE_OP_LT)
+            return "<=";
+        else if (op & BLOGC_TEMPLATE_OP_GT)
+            return ">=";
+        return "==";
+    }
+    if (op & BLOGC_TEMPLATE_OP_LT)
+        return "<";
+    else if (op & BLOGC_TEMPLATE_OP_GT)
+        return ">";
+    return "";
+}
+
+
+void
+blogc_template_debug(sb_slist_t *stmts)
+{
+    for (sb_slist_t *tmp = stmts; tmp != NULL; tmp = tmp->next) {
+        blogc_template_stmt_t *data = tmp->data;
+        fprintf(stderr, "DEBUG: <TEMPLATE ");
+        switch (data->type) {
+            case BLOGC_TEMPLATE_IFDEF_STMT:
+                fprintf(stderr, "IFDEF: %s", data->value);
+                break;
+            case BLOGC_TEMPLATE_IFNDEF_STMT:
+                fprintf(stderr, "IFNDEF: %s", data->value);
+                break;
+            case BLOGC_TEMPLATE_IF_STMT:
+                fprintf(stderr, "IF: %s %s %s", data->value,
+                    get_operator(data->op), data->value2);
+                break;
+            case BLOGC_TEMPLATE_ENDIF_STMT:
+                fprintf(stderr, "ENDIF");
+                break;
+            case BLOGC_TEMPLATE_FOREACH_STMT:
+                fprintf(stderr, "FOREACH: %s", data->value);
+                break;
+            case BLOGC_TEMPLATE_ENDFOREACH_STMT:
+                fprintf(stderr, "ENDFOREACH");
+                break;
+            case BLOGC_TEMPLATE_BLOCK_STMT:
+                fprintf(stderr, "BLOCK: %s", data->value);
+                break;
+            case BLOGC_TEMPLATE_ENDBLOCK_STMT:
+                fprintf(stderr, "ENDBLOCK");
+                break;
+            case BLOGC_TEMPLATE_VARIABLE_STMT:
+                fprintf(stderr, "VARIABLE: %s", data->value);
+                break;
+            case BLOGC_TEMPLATE_CONTENT_STMT:
+                fprintf(stderr, "CONTENT: `%s`", data->value);
+                break;
+        }
+        fprintf(stderr, ">\n");
+    }
+}
diff --git a/src/template-parser.h b/src/template-parser.h
index a8b4e8b..bd39678 100644
--- a/src/template-parser.h
+++ b/src/template-parser.h
@@ -47,5 +47,6 @@ typedef struct {
 sb_slist_t* blogc_template_parse(const char *src, size_t src_len,
     blogc_error_t **err);
 void blogc_template_free_stmts(sb_slist_t *stmts);
+void blogc_template_debug(sb_slist_t *stmts);
 
 #endif /* _TEMPLATE_GRAMMAR_H */