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Diffstat (limited to 'src/tparse/tree-list.go')
-rw-r--r--src/tparse/tree-list.go124
1 files changed, 124 insertions, 0 deletions
diff --git a/src/tparse/tree-list.go b/src/tparse/tree-list.go
new file mode 100644
index 0000000..70f5fff
--- /dev/null
+++ b/src/tparse/tree-list.go
@@ -0,0 +1,124 @@
+/*
+ Copyright 2020 Kyle Gunger
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+package tparse
+
+// Parse a list of values
+func parseValueList(tokens *[]Token, tok, max int) (Node, int) {
+ out := Node{}
+ out.Data = Token{Type: 10, Data: "list"}
+ var tmp Node
+
+ tok++
+
+ for ; tok < max; tok++ {
+ t := (*tokens)[tok]
+
+ switch t.Data {
+ case ")", "]", "}":
+ return out, tok
+ case ",":
+ tok++
+ default:
+ errOut("Error: unexpected token when parsing a list of values", t)
+ }
+
+ tmp, tok = parseValue(tokens, tok, max)
+ out.Sub = append(out.Sub, tmp)
+ }
+
+ return out, tok
+}
+
+// Parses a list of things
+func parseDefList(tokens *[]Token, tok, max int) (Node, int) {
+ out := Node{}
+ out.Data = Token{Type: 9, Data: "list"}
+
+ currentType := Node{}
+ currentType.Data = Token{Data: "undefined"}
+
+ for ; tok < max; tok++ {
+ t0 := (*tokens)[tok]
+ t1 := (*tokens)[tok+1]
+
+ switch t1.Data {
+ case ")", "]", "}", ",":
+ default:
+ currentType, tok = parseType(tokens, tok, max, true)
+ t0 = (*tokens)[tok]
+ t1 = (*tokens)[tok+1]
+ }
+
+ switch t0.Type {
+
+ case DEFWORD:
+ var tmp Node
+ if currentType.Data.Data == "undefined" {
+ errOut("Error: expected type before first parameter", t0)
+ } else if currentType.Data.Data == "type" {
+ tmp, tok = parseType(tokens, tok, max, true)
+ } else {
+ tmp = Node{Data: t0}
+ }
+
+ typ := currentType
+ makeParent(&typ, tmp)
+ makeParent(&out, typ)
+
+ default:
+ errOut("Error: unexpected token when parsing list, expected user-defined variable or ", t0)
+ }
+
+ switch t1.Data {
+ case ")", "]", "}":
+ return out, tok
+ case ",":
+ default:
+ errOut("Error: unexpected token when parsing list, expected ',' or end of list", t1)
+ }
+
+ tok++
+ }
+
+ return out, tok
+}
+
+func parseTypeList(tokens *[]Token, tok, max int) (Node, int) {
+ out := Node{}
+ out.Data = Token{Type: 9, Data: "list"}
+ var tmp Node
+
+ tok++
+
+ for ; tok < max; tok++ {
+ t := (*tokens)[tok]
+
+ switch t.Data {
+ case ")", "]", "}":
+ return out, tok
+ case ",":
+ tok++
+ default:
+ errOut("Error: unexpected token when parsing a list of types", t)
+ }
+
+ tmp, tok = parseType(tokens, tok, max, true)
+ out.Sub = append(out.Sub, tmp)
+ }
+
+ return out, tok
+}