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https://github.com/ganelson/inform.git
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351 lines
12 KiB
OpenEdge ABL
351 lines
12 KiB
OpenEdge ABL
[Inter::Defn::] Definition.
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Defining the Inter format.
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@
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@d MAX_INTER_CONSTRUCTS 100
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=
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typedef struct inter_line_parse {
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struct text_stream *line;
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struct match_results mr;
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struct inter_annotation_set set;
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inter_ti terminal_comment;
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int indent_level;
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} inter_line_parse;
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typedef struct inter_construct {
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inter_ti construct_ID;
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wchar_t *construct_syntax;
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int min_level;
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int max_level;
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int usage_permissions;
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struct text_stream *singular_name;
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struct text_stream *plural_name;
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struct method_set *methods;
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CLASS_DEFINITION
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} inter_construct;
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inter_construct *IC_lookup[MAX_INTER_CONSTRUCTS];
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inter_construct *Inter::Defn::create_construct(inter_ti ID, wchar_t *syntax,
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text_stream *sing,
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text_stream *plur) {
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inter_construct *IC = CREATE(inter_construct);
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IC->methods = Methods::new_set();
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IC->construct_ID = ID;
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IC->construct_syntax = syntax;
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if (ID >= MAX_INTER_CONSTRUCTS) internal_error("too many constructs");
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IC->min_level = 0;
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IC->max_level = 0;
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IC_lookup[ID] = IC;
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IC->usage_permissions = INSIDE_PLAIN_PACKAGE;
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IC->singular_name = Str::duplicate(sing);
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IC->plural_name = Str::duplicate(plur);
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return IC;
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}
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@
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@e CONSTRUCT_READ_MTID
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@e CONSTRUCT_TRANSPOSE_MTID
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@e CONSTRUCT_VERIFY_MTID
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@e CONSTRUCT_WRITE_MTID
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@e VERIFY_INTER_CHILDREN_MTID
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=
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VOID_METHOD_TYPE(CONSTRUCT_READ_MTID, inter_construct *IC, inter_bookmark *, inter_line_parse *, inter_error_location *, inter_error_message **E)
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VOID_METHOD_TYPE(CONSTRUCT_TRANSPOSE_MTID, inter_construct *IC, inter_tree_node *P, inter_ti *grid, inter_ti max, inter_error_message **E)
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VOID_METHOD_TYPE(CONSTRUCT_VERIFY_MTID, inter_construct *IC, inter_tree_node *P, inter_package *owner, inter_error_message **E)
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VOID_METHOD_TYPE(CONSTRUCT_WRITE_MTID, inter_construct *IC, text_stream *OUT, inter_tree_node *P, inter_error_message **E)
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VOID_METHOD_TYPE(VERIFY_INTER_CHILDREN_MTID, inter_construct *IC, inter_tree_node *P, inter_error_message **E)
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@
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@e INVALID_IST from 0
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=
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void Inter::Defn::create_language(void) {
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for (int i=0; i<MAX_INTER_CONSTRUCTS; i++) IC_lookup[i] = NULL;
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Inter::Defn::create_construct(INVALID_IST, NULL, I"nothing", I"nothings");
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Inter::Canon::declare();
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Inter::Nop::define();
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Inter::Comment::define();
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Inter::Symbol::define();
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Inter::Version::define();
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Inter::Pragma::define();
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Inter::Link::define();
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Inter::Append::define();
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Inter::Kind::define();
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Inter::DefaultValue::define();
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Inter::Constant::define();
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Inter::Instance::define();
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Inter::Variable::define();
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Inter::Property::define();
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Inter::Permission::define();
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Inter::PropertyValue::define();
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Inter::Primitive::define();
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InterPackage::define();
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Inter::PackageType::define();
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Inter::Label::define();
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Inter::Local::define();
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Inter::Inv::define();
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Inter::Ref::define();
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Inter::Val::define();
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Inter::Lab::define();
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Inter::Assembly::define();
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Inter::Code::define();
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Inter::Evaluation::define();
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Inter::Reference::define();
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Inter::Cast::define();
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Inter::Splat::define();
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}
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inter_annotation Inter::Defn::read_annotation(inter_tree *I, text_stream *keyword, inter_error_location *eloc, inter_error_message **E) {
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inter_ti val = 0;
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int textual = FALSE;
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*E = NULL;
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LOOP_THROUGH_TEXT(P, keyword)
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if (Str::get(P) == '=') {
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if (Str::get(Str::forward(P)) == '"') {
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TEMPORARY_TEXT(parsed_text)
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inter_error_message *EP =
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Inter::Constant::parse_text(parsed_text, keyword, P.index+2, Str::len(keyword)-2, NULL);
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inter_warehouse *warehouse = InterTree::warehouse(I);
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val = InterWarehouse::create_text(warehouse, InterTree::root_package(I));
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Str::copy(InterWarehouse::get_text(warehouse, val), parsed_text);
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DISCARD_TEXT(parsed_text)
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if (EP) *E = EP;
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textual = TRUE;
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} else {
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val = (inter_ti) Str::atoi(keyword, P.index + 1);
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textual = FALSE;
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}
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Str::truncate(keyword, P.index);
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}
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inter_annotation_form *IAF;
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LOOP_OVER(IAF, inter_annotation_form)
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if (Str::eq(keyword, IAF->annotation_keyword)) {
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if (IAF->textual_flag != textual) *E = Inter::Errors::plain(I"bad type for =value", eloc);
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return Inter::Annotations::value_annotation(IAF, val);
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}
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*E = Inter::Errors::plain(I"unrecognised annotation", eloc);
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return Inter::Annotations::invalid_annotation();
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}
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void Inter::Defn::write_annotation(OUTPUT_STREAM, inter_tree_node *F, inter_annotation IA) {
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WRITE(" %S", IA.annot->annotation_keyword);
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if (IA.annot_value != 0) {
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if (IA.annot->textual_flag) {
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WRITE("=\"");
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Inter::Constant::write_text(OUT, Inode::ID_to_text(F, IA.annot_value));
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WRITE("\"");
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} else {
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WRITE("=%d", IA.annot_value);
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}
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}
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}
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void Inter::Defn::transpose_annotation(inter_annotation *IA, inter_ti *grid, inter_ti grid_extent, inter_error_message **E) {
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if (IA->annot->textual_flag)
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IA->annot_value = grid[IA->annot_value];
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}
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@
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@d OUTSIDE_OF_PACKAGES 1
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@d INSIDE_PLAIN_PACKAGE 2
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@d INSIDE_CODE_PACKAGE 4
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@d CAN_HAVE_CHILDREN 8
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=
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inter_error_message *Inter::Defn::verify_construct(inter_package *owner, inter_tree_node *P) {
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inter_construct *IC = NULL;
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inter_error_message *E = Inter::Defn::get_construct(P, &IC);
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if (E) return E;
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VOID_METHOD_CALL(IC, CONSTRUCT_VERIFY_MTID, P, owner, &E);
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return E;
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}
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inter_error_message *Inter::Defn::transpose_construct(inter_package *owner, inter_tree_node *P, inter_ti *grid, inter_ti max) {
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inter_construct *IC = NULL;
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inter_error_message *E = Inter::Defn::get_construct(P, &IC);
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if (E) return E;
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VOID_METHOD_CALL(IC, CONSTRUCT_TRANSPOSE_MTID, P, grid, max, &E);
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return E;
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}
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inter_error_message *Inter::Defn::get_construct(inter_tree_node *P, inter_construct **to) {
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if (P == NULL) return Inode::error(P, I"invalid frame", NULL);
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if ((P->W.instruction[ID_IFLD] == INVALID_IST) || (P->W.instruction[ID_IFLD] >= MAX_INTER_CONSTRUCTS))
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return Inode::error(P, I"no such construct", NULL);
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inter_construct *IC = IC_lookup[P->W.instruction[ID_IFLD]];
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if (IC == NULL) return Inode::error(P, I"bad construct", NULL);
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if (to) *to = IC;
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return NULL;
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}
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inter_error_message *Inter::Defn::write_construct_text(OUTPUT_STREAM, inter_tree_node *P) {
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if (P->W.instruction[ID_IFLD] == NOP_IST) return NULL;
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return Inter::Defn::write_construct_text_allowing_nop(OUT, P);
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}
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inter_error_message *Inter::Defn::write_construct_text_allowing_nop(OUTPUT_STREAM, inter_tree_node *P) {
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inter_construct *IC = NULL;
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inter_error_message *E = Inter::Defn::get_construct(P, &IC);
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if (E) return E;
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for (inter_ti L=0; L<P->W.instruction[LEVEL_IFLD]; L++) WRITE("\t");
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VOID_METHOD_CALL(IC, CONSTRUCT_WRITE_MTID, OUT, P, &E);
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inter_ti ID = Inode::get_comment(P);
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if (ID != 0) {
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if (P->W.instruction[ID_IFLD] != COMMENT_IST) WRITE(" ");
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WRITE("# %S", Inode::ID_to_text(P, ID));
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}
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WRITE("\n");
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if (P->W.instruction[ID_IFLD] == PACKAGE_IST) InterPackage::write_symbols(OUT, P);
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return E;
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}
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inter_package *latest_block_package = NULL;
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inter_error_message *Inter::Defn::read_construct_text(text_stream *line, inter_error_location *eloc, inter_bookmark *IBM) {
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inter_line_parse ilp;
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ilp.line = line;
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ilp.mr = Regexp::create_mr();
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ilp.terminal_comment = 0;
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ilp.set = Inter::Annotations::new_set();
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ilp.indent_level = 0;
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LOOP_THROUGH_TEXT(P, ilp.line) {
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wchar_t c = Str::get(P);
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if (c == '\t') ilp.indent_level++;
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else if (c == ' ')
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return Inter::Errors::plain(I"spaces (rather than tabs) at the beginning of this line", eloc);
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else break;
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}
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int quoted = FALSE, literal = FALSE;
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LOOP_THROUGH_TEXT(P, ilp.line) {
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wchar_t c = Str::get(P);
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if ((literal == FALSE) && (c == '"')) quoted = (quoted)?FALSE:TRUE;
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literal = FALSE;
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if (c == '\\') literal = TRUE;
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if ((c == '#') && ((P.index == 0) || (Str::get_at(ilp.line, P.index-1) != '#')) && (Str::get_at(ilp.line, P.index+1) != '#') && (quoted == FALSE)) {
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ilp.terminal_comment = InterWarehouse::create_text(InterBookmark::warehouse(IBM), InterBookmark::package(IBM));
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int at = Str::index(P);
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P = Str::forward(P);
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while (Str::get(P) == ' ') P = Str::forward(P);
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Str::substr(InterWarehouse::get_text(InterBookmark::warehouse(IBM), ilp.terminal_comment), P, Str::end(ilp.line));
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Str::truncate(ilp.line, at);
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break;
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}
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}
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Str::trim_white_space(ilp.line);
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if (ilp.indent_level == 0) latest_block_package = NULL;
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while ((InterBookmark::package(IBM)) && (InterPackage::is_a_root_package(InterBookmark::package(IBM)) == FALSE) && (ilp.indent_level <= InterBookmark::baseline(IBM))) {
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InterBookmark::move_into_package(IBM, InterPackage::parent(InterBookmark::package(IBM)));
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}
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while (Regexp::match(&ilp.mr, ilp.line, L"(%c+) (__%c+) *")) {
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Str::copy(ilp.line, ilp.mr.exp[0]);
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inter_error_message *E = NULL;
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inter_annotation IA = Inter::Defn::read_annotation(InterBookmark::tree(IBM), ilp.mr.exp[1], eloc, &E);
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if (E) return E;
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Inter::Annotations::add_to_set(&(ilp.set), IA);
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}
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inter_construct *IC;
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LOOP_OVER(IC, inter_construct)
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if (IC->construct_syntax)
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if (Regexp::match(&ilp.mr, ilp.line, IC->construct_syntax)) {
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inter_error_message *E = NULL;
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VOID_METHOD_CALL(IC, CONSTRUCT_READ_MTID, IBM, &ilp, eloc, &E);
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return E;
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}
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return Inter::Errors::plain(I"bad inter line", eloc);
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}
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void Inter::Defn::set_latest_block_package(inter_package *F) {
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latest_block_package = F;
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}
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inter_package *Inter::Defn::get_latest_block_package(void) {
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return latest_block_package;
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}
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inter_error_message *Inter::Defn::vet_level(inter_bookmark *IBM, inter_ti cons, int level, inter_error_location *eloc) {
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int actual = level;
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if ((InterBookmark::package(IBM)) &&
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(InterPackage::is_a_root_package(InterBookmark::package(IBM)) == FALSE))
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actual = level - InterBookmark::baseline(IBM) - 1;
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inter_construct *proposed = NULL;
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LOOP_OVER(proposed, inter_construct)
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if (proposed->construct_ID == cons) {
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if (actual < 0) return Inter::Errors::plain(I"impossible level", eloc);
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if ((actual < proposed->min_level) || (actual > proposed->max_level))
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return Inter::Errors::plain(I"indentation error", eloc);
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return NULL;
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}
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return Inter::Errors::plain(I"no such construct", eloc);
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}
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int Inter::Defn::get_level(inter_tree_node *P) {
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inter_construct *IC = NULL;
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inter_error_message *E = Inter::Defn::get_construct(P, &IC);
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if (E) return 0;
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return (int) P->W.instruction[LEVEL_IFLD];
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}
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inter_error_message *Inter::Defn::verify_children_inner(inter_tree_node *P) {
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inter_construct *IC = NULL;
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inter_error_message *E = Inter::Defn::get_construct(P, &IC);
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if (E) return E;
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inter_package *pack = InterPackage::container(P);
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int need = INSIDE_PLAIN_PACKAGE;
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if (pack == NULL) need = OUTSIDE_OF_PACKAGES;
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else if (InterPackage::is_a_function_body(pack)) need = INSIDE_CODE_PACKAGE;
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if ((IC->usage_permissions & need) != need) {
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text_stream *M = Str::new();
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WRITE_TO(M, "construct (%d) '", P->W.instruction[LEVEL_IFLD]);
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Inter::Defn::write_construct_text(M, P);
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WRITE_TO(M, "' (%d) cannot be used ", IC->construct_ID);
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switch (need) {
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case OUTSIDE_OF_PACKAGES: WRITE_TO(M, "outside packages"); break;
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case INSIDE_PLAIN_PACKAGE: WRITE_TO(M, "inside non-code packages such as %S", InterPackage::name(pack)); break;
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case INSIDE_CODE_PACKAGE: WRITE_TO(M, "inside code packages such as %S", InterPackage::name(pack)); break;
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}
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return Inode::error(P, M, NULL);
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}
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E = NULL;
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VOID_METHOD_CALL(IC, VERIFY_INTER_CHILDREN_MTID, P, &E);
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if (E) Inter::Errors::backtrace(STDERR, P);
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return E;
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}
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void Inter::Defn::lint(inter_tree *I) {
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InterTree::traverse(I, Inter::Defn::lint_visitor, NULL, NULL, -PACKAGE_IST);
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}
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void Inter::Defn::lint_visitor(inter_tree *I, inter_tree_node *P, void *state) {
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inter_ti c = Inode::get_package(P)->resource_ID;
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inter_ti a = Inode::get_package_slowly_getting_same_answer(P);
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if (c != a) {
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LOG("Frame gives package as $6, but its location is in package $6\n",
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Inode::ID_to_package(P, c),
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Inode::ID_to_package(P, a));
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WRITE_TO(STDERR, "Frame gives package as %d, but its location is in package %d\n",
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Inode::ID_to_package(P, c)->resource_ID,
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Inode::ID_to_package(P, a)->resource_ID);
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internal_error("misplaced package");
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}
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Produce::guard(Inter::Defn::verify_children_inner(P));
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}
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