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Basic looping (for and while)

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This commit is contained in:
Nathan Braswell
2018-10-02 00:02:14 -04:00
parent ae2f40bcc7
commit 7993d1d980
1 changed files with 23 additions and 2 deletions
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25
k.krak
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@@ -579,8 +579,24 @@ fun main(argc: int, argv: **char): int {
} }
ast::_match() { error("no match should remain at C emit"); } ast::_match() { error("no match should remain at C emit"); }
ast::_case() { error("no case should remain at C emit"); } ast::_case() { error("no case should remain at C emit"); }
ast::_while() { error("while gen unimplemented"); } ast::_while() {
ast::_for() { error("for gen unimplemented"); } C_str += idt + "while ("
emit_C(t->children[0], 0)
C_str += ") {\n"
emit_C(t->children[1], level + 1)
C_str += ";\n" + idt + "}"
}
ast::_for() {
C_str += idt + "for ("
emit_C(t->children[0], 0)
C_str += ";"
emit_C(t->children[1], 0)
C_str += ";"
emit_C(t->children[2], 0)
C_str += ") {\n"
emit_C(t->children[3], level+1)
C_str += ";\n" + idt + "}"
}
ast::_return() { ast::_return() {
C_str += idt + "return" C_str += idt + "return"
if (t->children.size == 1) { if (t->children.size == 1) {
@@ -801,6 +817,10 @@ fun syntax_to_ast(file_name: str, syntax: *tree<symbol>, import_paths: ref vec<s
return _block(syntax->children.map(syntax_to_ast_helper)) return _block(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "if_statement") else if (syntax->data.name == "if_statement")
return _if(syntax->children.map(syntax_to_ast_helper)) return _if(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "for_loop")
return _for(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "while_loop")
return _while(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "return_statement") else if (syntax->data.name == "return_statement")
return _return(syntax->children.map(syntax_to_ast_helper)) return _return(syntax->children.map(syntax_to_ast_helper))
else if (syntax->data.name == "defer_statement") else if (syntax->data.name == "defer_statement")
@@ -942,6 +962,7 @@ fun trim(parse_tree: *tree<symbol>) {
remove_node(symbol("\"if\"", true), parse_tree) remove_node(symbol("\"if\"", true), parse_tree)
remove_node(symbol("\"else\"", true), parse_tree) remove_node(symbol("\"else\"", true), parse_tree)
remove_node(symbol("\"while\"", true), parse_tree) remove_node(symbol("\"while\"", true), parse_tree)
remove_node(symbol("\"for\"", true), parse_tree)
remove_node(symbol("\"__if_comp__\"", true), parse_tree) remove_node(symbol("\"__if_comp__\"", true), parse_tree)
remove_node(symbol("\"comp_simple_passthrough\"", true), parse_tree) remove_node(symbol("\"comp_simple_passthrough\"", true), parse_tree)
/*remove_node(symbol("obj_nonterm", false), parse_tree)*/ /*remove_node(symbol("obj_nonterm", false), parse_tree)*/