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-rw-r--r--src/template.c232
-rw-r--r--src/template.h6
2 files changed, 141 insertions, 97 deletions
diff --git a/src/template.c b/src/template.c
index c43827a..d3066c3 100644
--- a/src/template.c
+++ b/src/template.c
@@ -32,6 +32,13 @@ struct env {
struct hashmap *templates;
};
+struct template {
+ char *name;
+ mpc_ast_t *ast;
+ struct hashmap *blocks;
+ char *parent;
+};
+
/* ensure buffer has room for a string sized l, grows buffer capacity if needed */
void buffer_reserve(struct buffer *buf, int l) {
int req_size = buf->size + l;
@@ -47,6 +54,96 @@ void buffer_reserve(struct buffer *buf, int l) {
}
}
+
+mpc_parser_t *parser_init() {
+ static mpc_parser_t *template;
+ if (template != NULL) {
+ return template;
+ }
+
+ mpc_parser_t *symbol = mpc_new("symbol");
+ mpc_parser_t *number = mpc_new("number");
+ mpc_parser_t *string = mpc_new("string");
+ mpc_parser_t *op = mpc_new("op");
+ mpc_parser_t *text = mpc_new("text");
+ mpc_parser_t *print = mpc_new("print");
+ mpc_parser_t *expression = mpc_new("expression");
+ mpc_parser_t *comment = mpc_new("comment");
+ mpc_parser_t *statement = mpc_new("statement");
+ mpc_parser_t *statement_open = mpc_new("statement_open");
+ mpc_parser_t *statement_close = mpc_new("statement_close");
+ mpc_parser_t *statement_for = mpc_new("for");
+ mpc_parser_t *statement_if = mpc_new("if");
+ mpc_parser_t *statement_block = mpc_new("block");
+ mpc_parser_t *statement_extends = mpc_new("extends");
+ mpc_parser_t *body = mpc_new("body");
+ mpc_parser_t *content = mpc_new("content");
+ template = mpc_new("template");
+ mpca_lang(MPCA_LANG_DEFAULT,
+ " symbol : /[a-zA-Z][a-zA-Z0-9_.]*/ ;"
+ " number : /[0-9]+/ ;"
+ " string : '\"' /([^\"])*/ '\"' ;"
+ " op : '+' | '-' | '*' | '/' | '>' | '<';"
+ " text : /[^{][^{%#]*/ ;"
+ " expression: (<symbol> | <number> | <string>) (<op> (<symbol> | <number> | <string>))* ;"
+ " print : \"{{\" /-? */ <expression> / *-?/ \"}}\" ;"
+ " comment : \"{#\" /[^#][^#}]*/ \"#}\" ;"
+ " statement_open: \"{%\" /-? */;"
+ " statement_close: / *-?/ \"%}\";"
+ " for : <statement_open> \"for \" <symbol> \"in\" <symbol> <statement_close> <body> <statement_open> \"endfor\" <statement_close> ;"
+ " block : <statement_open> \"block \" <symbol> <statement_close> <body> <statement_open> \"endblock\" <statement_close>;"
+ " extends : <statement_open> \"extends \" <string> <statement_close>;"
+ " if : <statement_open> \"if \" <expression> <statement_close> <body> (<statement_open> \"else\" <statement_close> <body>)? <statement_open> \"endif\" <statement_close> ;"
+ " statement : <for> | <block> | <extends> | <if> ;"
+ " content : <print> | <statement> | <text> | <comment>;"
+ " body : <content>* ;"
+ " template : /^/ <body> /$/ ;",
+ symbol,
+ op,
+ number,
+ string,
+ print,
+ expression,
+ text,
+ comment,
+ statement_open,
+ statement_close,
+ statement,
+ statement_if,
+ statement_for,
+ statement_block,
+ statement_extends,
+ content,
+ body,
+ template,
+ NULL);
+ return template;
+}
+
+mpc_ast_t *parse(char *tmpl) {
+ mpc_parser_t *parser = parser_init();
+ mpc_result_t r;
+
+ if (!mpc_parse("input", tmpl, parser, &r)) {
+ mpc_err_print(r.error);
+ mpc_err_delete(r.error);
+ return NULL;
+ }
+
+ return r.output;
+}
+
+struct hashmap *find_blocks_in_ast(mpc_ast_t *node, struct hashmap *map) {
+ if (strstr(node->tag, "content|statement|block")) {
+ char *name = node->children[2]->contents;
+ hashmap_insert(map, name, node);
+ }
+
+ for (int i=0; i < node->children_num; i++) {
+ find_blocks_in_ast(node->children[i], map);
+ }
+}
+
struct env *env_new(char *dirname) {
DIR *dr = opendir(dirname);
if (dr == NULL) {
@@ -66,7 +163,19 @@ struct env *env_new(char *dirname) {
char *name = de->d_name;
char *tmpl = read_file(name);
- hashmap_insert(env->templates, name, tmpl);
+ mpc_ast_t *ast = parse(tmpl);
+
+ struct template *t = malloc(sizeof *t);
+ t->ast = ast;
+ t->name = name;
+ t->blocks = find_blocks_in_ast(ast, hashmap_new());
+ t->parent = NULL;
+
+ if (ast->children_num > 1 && ast->children[1]->children_num > 0 && strstr(ast->children[1]->children[0]->tag, "content|statement|extends")) {
+ t->parent = ast->children[1]->children[0]->children[2]->children[1]->contents;
+ }
+
+ hashmap_insert(env->templates, name, t);
}
closedir(dr);
@@ -326,110 +435,45 @@ int eval(struct buffer *buf, mpc_ast_t* t, struct hashmap *ctx) {
return 0;
}
-
- if (strstr(t->tag, ">")) {
- for (int i=0; i < t->children_num; i++) {
- eval(buf, t->children[i], ctx);
- }
- }
-
- return 0;
-}
-
-mpc_parser_t *parser_init() {
- static mpc_parser_t *template;
- if (template != NULL) {
- return template;
+ for (int i=0; i < t->children_num; i++) {
+ eval(buf, t->children[i], ctx);
}
- mpc_parser_t *symbol = mpc_new("symbol");
- mpc_parser_t *number = mpc_new("number");
- mpc_parser_t *string = mpc_new("string");
- mpc_parser_t *op = mpc_new("op");
- mpc_parser_t *text = mpc_new("text");
- mpc_parser_t *print = mpc_new("print");
- mpc_parser_t *expression = mpc_new("expression");
- mpc_parser_t *comment = mpc_new("comment");
- mpc_parser_t *statement = mpc_new("statement");
- mpc_parser_t *statement_open = mpc_new("statement_open");
- mpc_parser_t *statement_close = mpc_new("statement_close");
- mpc_parser_t *statement_for = mpc_new("for");
- mpc_parser_t *statement_if = mpc_new("if");
- mpc_parser_t *statement_block = mpc_new("block");
- mpc_parser_t *statement_extends = mpc_new("extends");
- mpc_parser_t *body = mpc_new("body");
- mpc_parser_t *content = mpc_new("content");
- template = mpc_new("template");
- mpca_lang(MPCA_LANG_DEFAULT,
- " symbol : /[a-zA-Z][a-zA-Z0-9_.]*/ ;"
- " number : /[0-9]+/ ;"
- " string : '\"' /([^\"])*/ '\"' ;"
- " op : '+' | '-' | '*' | '/' | '>' | '<';"
- " text : /[^{][^{%#]*/ ;"
- " expression: (<symbol> | <number> | <string>) (<op> (<symbol> | <number> | <string>))* ;"
- " print : \"{{\" /-? */ <expression> / *-?/ \"}}\" ;"
- " comment : \"{#\" /[^#][^#}]*/ \"#}\" ;"
- " statement_open: \"{%\" /-? */;"
- " statement_close: / *-?/ \"%}\";"
- " for : <statement_open> \"for \" <symbol> \"in\" <symbol> <statement_close> <body> <statement_open> \"endfor\" <statement_close> ;"
- " block : <statement_open> \"block \" <symbol> <statement_close> <body> <statement_open> \"endblock\" <statement_close>;"
- " extends : <statement_open> \"extends \" <string> <statement_close>;"
- " if : <statement_open> \"if \" <expression> <statement_close> <body> (<statement_open> \"else\" <statement_close> <body>)? <statement_open> \"endif\" <statement_close> ;"
- " statement : <for> | <block> | <extends> | <if> ;"
- " content : <print> | <statement> | <text> | <comment>;"
- " body : <content>* ;"
- " template : /^/ <body> /$/ ;",
- symbol,
- op,
- number,
- string,
- print,
- expression,
- text,
- comment,
- statement_open,
- statement_close,
- statement,
- statement_if,
- statement_for,
- statement_block,
- statement_extends,
- content,
- body,
- template,
- NULL);
- return template;
+ return 0;
}
-char *template(char *tmpl, struct hashmap *ctx) {
- mpc_parser_t *parser = parser_init();
- mpc_result_t r;
-
- if (!mpc_parse("input", tmpl, parser, &r)) {
- mpc_err_print(r.error);
- mpc_err_delete(r.error);
- return NULL;
- }
-
+char *render_ast(mpc_ast_t *ast, struct hashmap *ctx) {
#if DEBUG
- printf("Template: %s\n", tmpl);
- printf("AST: ");
- mpc_ast_print(r.output);
+ printf("AST: \n");
+ mpc_ast_print(ast);
printf("\n");
#endif
-
+
struct buffer buf;
buf.size = 0;
- buf.cap = strlen(tmpl) + 1;
- buf.string = malloc(buf.size);
+ buf.cap = 256;
+ buf.string = malloc(buf.cap);
buf.string[0] = '\0';
- eval(&buf, r.output, ctx);
-
- mpc_ast_delete(r.output);
+ eval(&buf, ast, ctx);
return buf.string;
}
-char *render(struct env *env, char *template_name, struct hashmap *ctx) {
- char *tmpl = hashmap_get(env->templates, template_name);
- return template(tmpl, ctx);
+char *template_string(char *tmpl, struct hashmap *ctx) {
+ #if DEBUG
+ printf("Template: %s\n", tmpl);
+ #endif
+ mpc_ast_t *ast = parse(tmpl);
+ char *output = render_ast(ast, ctx);
+ mpc_ast_delete(ast);
+ return output;
+}
+
+char *template(struct env *env, char *template_name, struct hashmap *ctx) {
+ struct template *t = hashmap_get(env->templates, template_name);
+
+ #if DEBUG
+ printf("Template name: %s\n", t->name);
+ printf("Parent: %s\n", t->parent ? t->parent : "None");
+ #endif
+ return render_ast(t->ast, ctx);
} \ No newline at end of file
diff --git a/src/template.h b/src/template.h
index f65da47..45a58fc 100644
--- a/src/template.h
+++ b/src/template.h
@@ -1,10 +1,10 @@
#include "hashmap.h"
#include "vector.h"
-char *read_file(char *filename);
-char *template(char *tmpl, struct hashmap *ctx);
struct env;
struct env *env_new();
void env_free(struct env *env);
-char *render(struct env *env, char *template_name, struct hashmap *ctx); \ No newline at end of file
+char *template(struct env *env, char *template_name, struct hashmap *ctx);
+char *template_string(char *tmpl, struct hashmap *ctx);
+char *read_file(char *filename); \ No newline at end of file